Air Handling Units Catalogue

Introduction

Contents Introduction ..................................... 2 Legend ............................................ 2 Nomenclature .................................. 2 General Features ............................ 3 Component Features ...................... 3 Sections & Sub Assemblies ............. 4 Units for Outdoor Installation ........... 8 Accessories & Options .................... 8 Quick Selection ............................... 9 Motor Data ...................................... 9

Capacity Ratings ........................ 10,11 Air Pressure Drop ....................... 12 Fan Performance ....................... 13 Dimensional Data ....................... 14,15 Base Frame Details .................... 16 Coil Connection Sizes ................ 16 Coil Connection Locations ......... 17 Weights ...................................... 18,19 Guide Specifications ................... 20

Legend The following legends are used throughout this manual : Amp ............. Amperes cfm .............. Cubic feet per minute DBT ............. Dry Bulb Temperature EAT ............. Entering Air Tempeature ESP ............. External Static Pressure EWT ............ Entering Water Temp. FPI ............... Fins per inch fpm .............. Feet per minute gpm ............. Gallons per minute inwg ............. inches of Water Gauge Hz ................ Hertz KW .............. Kilowatts

Kg ................ Kilgrams KPa ............. Kilo Pascals lbs ................ Pounds weight l/s ................. Litres per second LWT ............ Leaving Water Temp. MBH ............ 1000 Btuh m/s .............. Meters per second OD ............... Outside Diameter Pa ................ Pascals Ph ................ Phase psig .............. pounds per sq.inch rpm .............. revolutions per minute SST ............. Saturated Suction Temp. V .................. Volts WBT ............ Wet Bulb Temperature

Nomenclature MAH Modular Air Handling Unit

12 Nominal Air Flow Rate (cfm) / 100

MAH - Series Page 2

SKM Modular Air Handling (MAH) Units are designed to a high engineering standard to provide the requirements of ventilation, heating, cooling, dehumidification and air distribution to a conditioned space. MAH Units are available in 16 sizes to deliver from 1200 cfm (566 l/s) to 45,000 cfm (21240 l/s) nominal air flow rate against total static pressure upto 8.0 inwg. (2000 Pa). MAH units are applicable for indoor and outdoor installation and they are ideal for large halls, schools, offices, banks, workshops, laboratories, restaurants, cinemas, hospitals, departmental stores, mosques and super markets, etc. SKM double skin air handling units are designed to meet the Indoor Air Quality requirements as per ARI standard 62/89. SKM Modular Air Handling Units, are another premium international quality product from SKM, rated in accordance with ARI standard 430 and fully justifying our slogan :

Built in the Gulf...for the World

GENERAL FEATURES COMPONENT FEATURES Internal skin

General Features SKM MAH units are manufactured in modular sections. Units can be shipped fully or partially assembled to facilitate handling and lifting in case of limited access. All components of MAH are easily accessible. Different sectional arrangements & fan discharge positions are possible depending on the site constraints and requirements. MAH units are suitable both for duct connection or free discharge applications. A typical MAH Unit consists of a wide choice of a combination but not limited to the following sections, fan, cooling coil, heating coil, humidifier, filter section, heat recovery system, by-pass section, multi-zone, mixing box dampers, return air fan, plenums etc.

Inner panel skin, so called “double skin” [DSU] to retain the insulation, is made of galvanized steel, is easy to clean and has smooth surface. This eliminates any chance of dirt and bacteria accumulation, making SKM double skin units ideally suitable for hygienic applications, such as, pharmaceutical industries, hospitals, operation theatres and food processing industries, etc. Stainless steel inner skin [SIS] or perforated inner skin [PIS] or Aluminium inner skin [AIS] for better sound absorption characteristics are available as an option.

Painting

Casing & Construction

MAH units are supplied unpainted in a galvanized finish. Units are painted only when specified. Painted MAH units are made out of a zinc coated galvanized steel thoroughly de-greased and then phosphated before application of an average 60 micron backed electrostatic polyester dry powder coating in RAL 7032 color scheme. This finish and coating can pass a 1000 hour, 5% salt spray testing at 95°F (35°C) and 95% relative humidity as per ASTM B 117-95. Specify option [BEP] for painted units.

Penta-Post Frame

Insulation

Component Features

MAH series section casings are constructed of framed modules for maximum rigidity and strength. Structure frame is made of hot dip coated galvanized steel profile so called “Penta-Post” which has excellent mechanical characteristics. The cross section of this profile is specially designed for this type of applications. “PentaPost” profiles are connected by means of special corner pieces. This frame construction gives the possibility of completely dismantling the unit sections and re-assembly at site in case of difficult access.

For best thermal and acoustical performance, all panels and PentaPost frames are internally insulated with fiberglass having black glass tissue facing. The fiber glass insulation conforms to HH-1-545B Type 1, SMACNA standard for duct liners and ASTM-C-423 and NFPA90A and 90B standards for fire resistance. Sound absorption coefficients tested in accordance with ASTMC423 on F25 mounting are as follows : Octave Band (Hz)

125

250

500

1000 2000 4000 NRC

Coefficient

0.23

0.47

0.57

0.74

0.85

0.86

0.6

Special gaskets are provided for thermal bridge protection to avoid condensation. MAH comes standard with 1” (25mm) insulation for sizes 12-150 and with 1.5” (38mm) for sizes 200-450. The density and thermal conductivity of standard insulation is 2 lb/ft³ (32kg/m³) and 0.23 BTU.in/ft².°F.h, (0.033 W/m°K) respectively. The following are the optional insulation materials available in MAH units : •

2” (50mm) fiber glass insulation, [2SG] with the same zspecifications as standard.

•

1” (25mm) or 2” (50mm) polyisocynurate board, [1SB] or [2SB] with density in the range of 2 to 3 lb/ft³ (32 to 48 kg/ m³) and thermal conductivity of 0.16 BTU.in /ft².°F.h (0.023 W/m°K).

•

1” (25mm) or 2” (50mm) polyurethane foam injection or board, [1SF] or [2SF] with density in the range of 2 to 3 lb/ft³ (32 to 48 kg/m³) and thermal conductivity of 0.16 BTU.in/ft².°F.h (0.023 W/m°K). The injection is only possible for double skin units.

Panels Access and fixed panels are constructed of hot dip galvanized steel conforming to JIS-G 3302 and ASTM-A-653. Access panels are provided with quick release fasteners to facilitate access to all internal components for maintenance and service. Suitable handles are provided for ease of handling. All fixed panels are bolted to the frame and provided with special gasket between panels and frames to ensure air tightness. This bolted construction makes all sections accessible from both sides.

MAH - Series Page 3

SECTIONS & SUB ASSEMBLIES Base Frame Since MAH is constructed from Pentapost profile, which has inherent rigidity and stability. Most sizes of MAH series (up to size 100) do not require structure steel base frame. Sheet metal frame with holes for vibration mounts are provided on each side of the unit. For larger MAH units (sizes 120 - 450), a steel structure is provided coated with galvanized primer and black enamel finish. Structural steel base frame, [SBF] for sizes 12 - 100 is available as an option. See page 16 for details.

floating sub base. In order to limit transmission of noise and vibration the complete fan motor sub-base assembly is mounted on anti-vibration mounts and, therefore, it is not necessary to install external vibration mounts. Flexible connection is provided between fan discharge and casing panel to avoid transmission of vibration to the connecting duct. Motors can be provided on either right or left hand side facing the unit from return air side (see figure). Section is sized to accommodate different motor sizes depending on the actual requirement of airflow and static pressure.

Major Sections & Sub Assemblies MAH series is constructed of suitable sized casing module and following sub-assemblies:

Fan Section Fan Double inlet double width centrifugal fans are standard supply in SKM MAH. The impellers can have forward curved [FAT] or [FADH], backward inclined [FRDH] or airfoil profile [FTZAF] depending on the requirements. [FRDH] is available for sizes 32 to 450 and [FTZAF] is available for sizes 50 to 450. All fans are belt-driven by motors with adjustable pitch motor pulleys and fixed drive blower pulleys. The impellers are keyed to the shafts. All fans are statically and dynamically balanced. SKM fans uses self-aligned ball or pillow block bearings that are greased for life. Pillow block bearings are provided with re-greasing fittings. Shafts are made of C-40 steel turned by an automatic process. Fans are selected for best sound characteristics based on maximum fan efficiency. Fans used in SKM MAH units are tested in a registered laboratory in accordance with AMCA Standard 210. Different fan positions are available depending on the requirement. Refer to dimensional data for details.

Motor Handing

Options •

Non-standard fan size. [NSF]

•

Spark proof fans. [SPF]

•

Explosion proof motor. [EXM]

• •

Variable speed drive (Frequency Inverter). [VSD] Standby motor (additional) with manual change over. [MMC]

•

Stainless steel shaft. [SSS]

•

Extended lubrication fittings. [LFE]

•

Polyglycoat coating on fans. [PGF]

•

Spring vibration isolators for fan sub-frame. [FAVM]

•

Inlet guide vanes for VAV control FRDH & FRZR fans (size 50 & above). [IGV]

Coil Section Variety of coils including chilled water [CCW] , direct expansion [CDX], hot water [CHW] and steam [CST] are available to meet a wide range of application requirements. Coils are assembled in slide-in guides for easy removal for maintenance or replacement. Coils are constructed from seamless copper tubes of 3/8” (9.5 mm) OD for sizes 12-62 and 5/8” (15.9mm) OD for sizes 80450, arranged in a staggered form in the direction of airflow.

Motors Fan motors are totally enclosed fan cooled (TEFC), foot mounted, 4 pole, IP-55 protected and Class-F insulated. The motor is mounted on adjustable base, so that belt tension can be easily adjusted. The complete fan motor drive assembly is mounted on

Copper tubes are mechanically expanded into continuous corrugated aluminum fins, available in 8 fpi (3.2 mm), 10 fpi (2.54 mm) and 12 fpi (2.1 mm) fin spacing to provide continuous compression bond over the entire finned length for maximum heat transfer rates.

MAH - Series Page 4

SECTIONS & SUB ASSEMBLIES Headers are made out of seamless copper pipe. The headers joints are extruded to provide large bearing surface for maximum strength. Air vents and drain plugs are standard for water coils. Coils can be provided with moisture eliminator depending on the air conditions. Eliminator blades are made of PVC, with shape specially designed to trap water droplets blown off the coil. Please specify [CCWE] & [CDXE] for chilled water and DX coils with eliminator, respectively . Cooling coil section is provided with insulated drain pan with MPT drain connection, in order to hold and remove the condensate formed during dehumidification. Drain pan is made of painted zinc coated steel sheet. Coils are tested by air pressure while coils are submerged in water to a pressure of300 psig (2060 kPa). SKM coils are rated in accordance with ARI-410/91.

Coil Handing

Filter Section Wide varieties of air filtration systems are available to choose from depending on the requirement. These include : Panel filters [FIPI] : 2” (50 mm) panel filters with aluminum washable media or 2” (50 mm) fiberglass/synthetic disposable/washable media. Average efficiency of filter ranges from 62% to 95% average dust arrestance (gravimetric measure) based on ASHRAE test # 52/76. Vee filters [FIPV] : Filters arranged in a vee bank to increase the filtration area. Media options are the same as in Panel filters.

Coil Circuiting and Handing Water coils can be provided with various coil circuiting like half, full or double depending on the water flow rate and water pressure drop through the coil. Direct expansion coils are equipped with a properly sized distributor to ensure equal refrigerant fed to all circuits. The number of circuits is chosen to provide optimum heat transfer and reasonable refrigerant velocity and pressure drop so as not to trap any oil in the coil tubing. Coil connections can be provided on either right or left hand side facing the unit from return air side (see figure). Drain connection can be provided on either side or on both sides as required. Inlet and outlet connections are sealed against unit panel by means of flexible closed cell gaskets. SKM provides sweat connections for coils as standard.

Bag Filter : 22” (559 mm) [FIBG1] , 30” (762 mm) [FIBG2] or 36” (914 mm) [FIBG3] deep high efficiency bag filters with average dust spot efficiency (opacimetric measure) ranging from 75% to 95% as per ASHRAE test 52/76. Combination of bag & flat filters are available under code [FIPBG1], [FIPBG2] & [FIPBG3] corresponding to [FIBG1], [FIBG2] & [FIBG3] respectively. Consult SKM for equivalent efficiency to bag filter with short depth, 4” thick (100 mm) extended surface minipleat filters for cases where there are restrictions in dimension. This filter is available in 65%, 85% and 95% dust spot efficiency.

Options • • • • • • •

Copper fins. [FC] Electro-tinned coils. [FCT] Protective coating on coils. [PCC] Stainless steel drain pan. [SDP] MPT, FPT or flanged coil connectors. [PTA] Expansion valve for direct expansion coils. [TXV] Optional 5/8” OD Coils for models 12-62. [OTD]

MAH - Series Page 5

SECTIONS & SUB ASSEMBLIES HEPA Filter [FIHP] : Ultra high Absolute HEPA (High Efficiency Particulate Air) filter with efficiency in excess of 99% when measured by using DOP (Di-Octyle Phthalate) method. Other varieties of filters like Auto Roll Filter [FIRL] and Sand Inertia Filter [FISI] are also available.

Electric Heater Section Two different types of electric heater element batteries are available:

Humidifier Section Various types of humidifiers are available depending on application : Steam humidifiers: Humidity is added in the form of steam. Two types of steam humidifiers are available : •

Internal steam humidifier [HSIG]. This section is complete with steam pan with integral steam generator composed of immersion type electric heater, tank and necessary controls.

•

External steam humidifier [HSEG ]. This section is empty, only consisting of drain pan, steam distribution tubes and hoses for steam distribution tubes. The steam generator is remote to the unit.

Open Type [CEHO] : constructed from 80/20 nickel chrome resistance elements. Finned Type [CEHF] : constructed from 80/20 nickel chrome resistance wire centered in stainless steel sheath metal tubes by compressed magnesium oxide. Electric heater batteries are available in a wide range of capacity (KW) and steps. Electric heater batteries are supplied with primary and secondary manual safety cutouts, as standard. Recommended KW capacity on standard (nominal airflow) rate is given in the table. Batteries other than this can be supplied upon request. Electric heater capacity in KW can be calculated in IP system as :

Water humidifiers: Water humidifiers consist of water tank, pump, spray nozzles, heat exchanger media and water droplet eliminator. They are available in two different arrangements: •

Evaporative Type [HFF] . This type consists of evaporative flooded fill media. The air passing through the evaporative media is humidified and cooled due to intensive contact between air and the wetted & unheated contact surface. The increase in humidity ratio occurs through water evaporation, as air passes through media.

•

Spray Pad Type (Air Washer) [HPS] . In this type, water is sprayed over the pad area. Air is humidified and cooled as it passes through the wetted pad media.

Capacity (KW) = 1.085 x Airflow Rate (cfm) x Air Temperature Rise (°F)/3412

or in SI system as : Capacity (KW) = 1.21 x Airflow Rate (l/s) x Air Temperature Rise (°C)/1000.

Model Size 12 16 24 32 40 50 62 80 100 120 150 200 250 320 400 450

Option 1 6 7.5 12 15 18 24 30 36 48 60 72 90 126 144 189 216

Capacity (KW) Stages Option 2 1 9 1 12 1 18 2 24 2 27 2 36 2 45 2 54 2 72 2 84 2 108 2 144 3 180 4 225 3 270 6 324

The humidifying efficiency for water humidifiers can be calculated using the following relation :

η humidifier = Stages 2 2 2 2 3 2 3 3 4 4 3 4 5 5 5 6

=

Actual Moisture Content Change Theoretical Moisture Content Change Entering Dry Bulb Temp.- Leaving Dry Bulb Temp. Entering Dry Bulb Temp.- Leaving Wet Bulb Temp.

Dampers MAH units are equipped with multi blade, low leakage, heavy duty dampers to control the air flow rate by introducing resistance to air flow in the system. Dampers are available with parallel blades and opposed blades. Links are provided for either manual or motorized operation. The following dampers are available : • • •

Options Electric heater batteries [APHT] can be supplied as option with control panels for remote installation or as an integral part of MAH control panel consisting of stage contactors, control fuses, control disconnect switch, terminals for field supply and installed air flow switch and thermostat.

•

Full face air intake damper [DFC] Face & bypass damper [DFBP] Fresh, exhaust and return air damper for mixing box and economizer control Hot deck and cold deck dampers for multi-zone application.

The damper frame is constructed from galvanized steel, blades from galvanized steel, shafts from steel, bearing from bronze and linkage and brackets from galvanized steel. Aluminum damper blades in airfoil profile are available, as an option.

MAH - Series Page 6

SECTIONS & SUB ASSEMBLIES are also available. A blow through dual duct [DDCT] can be provided to meet the required application.

Sound Attenuator Section Sound attenuator can be provided in both supply and return air side. The standard design is with vertical specially designed splitters consisting of sound absorbing material parallel to the air stream matching unit cross section. Two different media depths of 24” (600 mm) [SAT1] and 48” (1200 mm) [SAT2] are available as standard. A variety of splitter material, thickness, length, spacing and casing are available in order to satisfy even the most strict sound attenuation requirements. For quick selection of standard series MAH attenuators, the following insertion losses (db) are listed in the table : Hz

63

125

250

500

1000

2000

4000

SAT1

5

11

11

15

22

29

22

8000 15

SAT2

10

20

21

28

42

56

42

27

Plenum Sections Empty plenums can be supplied either for future use or for particular applications like access, end vertical assembly, end bottom plenum for bottom return air applications, etc. Standard sizes are listed in the dimensional data. Plenums are available in three different sizes of 18” (451mm) [PEM1], 24” (610mm) [PEM2], and 36” (914mm) [PEM3] depth. Custom sizes to suite a particular requirement can be supplied as an option

Heat Recovery Section

Mixing Box Section Mixing box [BMX] with fresh air and return air dampers are available to mix the outside fresh air with recirculated return air. Both the return and fresh air dampers are sized to handle 0-100% of the total supply air. Combination of mixing box and panel filter [BMXP] can be provided in one section, if required.

In order to conserve the energy consumption by exchanging energy between the supply and exhaust air streams, various types of heat recovery systems can be provided as an integral part of SKM MAH units. These depend upon special installation and other requirements like : •

Run Around Coil System [RRC] : This system comprises of two coils placed in the supply and exhaust air streams. The coils are to be connected in a closed loop via piping and circulating pump (supplied by others). Water or glycol is circulated as a heat transfer medium. This system offers efficiency up to 65% and recovers sensible heat only.

•

Fixed Plate Heat Recovery System [RHP] : Fixed plate heat recovery system consists of fixed aluminum plates separating the exhaust and supply air streams. The exhaust air passes through the exchanger from end to end and the supply air stream passes through in a counter flow. The two air streams are totally segregated and flow through individual passages formed by the plates within the exchanger. The plates separating the two air streams act as the heat transfer medium. This system offers efficiency up to 70% and recovers sensible heat only.

Exhaust Box Section Exhaust box [BEX] with exhaust air dampers are available. When used in combination with mixing box with motorized dampers, it provides excellent economizer control.

Multi-zone & Dual-duct Sections SKM MAH units can be designed to incorporate blow through multi-zone section complete with cooling/heating (if required) coils and mechanically interlocked dampers. Vertical [MZNV] and horizontal [MZNH] discharge arrangements

MAH - Series Page 7

SECTIONS & SUB ASSEMBLIES UNITS FOR OUTDOOR INSTALLATION •

Rotary Heat Recovery System (Thermal Wheel) [RHR]: Heat Wheels are revolving cylinders consisting of an airpermeable matrix with large interior surface. The matrix is cooled as cold air is passed through the wheel. This in turn cools the fresh air stream when the cooled rotating matrix comes in line with the supply air stream. When sprayed with a hygroscopic coating, the heat wheel will transfer moisture from the fresh air stream to the exhaust stream. Heat Wheel offers are capable of recovering both sensible and latent heats and offer efficiencies as high as 85%. Heat wheels are ideal for applications that demand high percentage of fresh air intake like in hospitals, research labs, schools and pharmaceutical companies.

MAH Units for Outdoor Installation For outdoor installations SKM provides various options to protect the unit from varying climates. These include : •

Weather proof top cover [ATC] to protect against rain. It is made with slight pitch down from the centerline to ends on both sides to avoid rain accumulation on the top cover of the unit.

•

2” (50 mm) thick panels [2SG] / [2SF] / [2SB] to prevent cold bridges.

•

Air Intake Louver [AIL] to prevent foreign material to enter the unit in fresh air intake.

•

Sand trap louver [ASL] to extract coarse sand prior to the entry in the unit.

•

Rain hood [ARH] to prevent rain entering the fresh air intake.

•

Bird screen [ABS] to prevent foreign material to enter the unit in fresh air intake.

Accessories and Options In order to meet most application requirements, MAH units can be supplied with various accessories and options, such as:

•

Heat Pipe System [RPR] : Heat pipe is a simple heat transfer devices consisting of two coils, pre-cooling and re-heating, connected together without any moving part in between them and containing phase change fluid. It is automatically activated by the difference in temperature performing a double function. First, pre-cooling the return air allows the cooling coil to work cooler and condense more moisture. Second, re-heating the supply air brings about a more comfortable temperature and relative humidity. This entire function of humidity reduction is performed while saving energy.

•

Stainless steel construction. [SSC]

•

Aluminum construction. [AAC]

•

Bulk Head Light Fittings. [BLF]

•

Stainless Steel Fasteners. [SSF]

•

Hinged Access doors with latches. [QDL]

•

Differential Air Pressure Switch. [APC]

•

Manometers [MAF] to monitor air pressure drop across filters can be supplied for field installation. SKM provides the the provision for fixing only. Inclined tube manometers are supplied loose.

•

Walkway [WAW] can be provided in the desired section for ease of maintenance. The length of the section would be increased depending on the width of the walkway required.

•

Knockdown unit [SKD] can be provided for ease of transportation or for difficult access areas.

•

Ceiling Suspended Units [CSU]

•

External Vibration Isolators [CAVM] can be supplied loose for site installation

MAH - Series Page 8

QUICK SELECTION MOTOR DATA Quick Selection

Motor Data Rated Pow er Supply (V / Ph / Hz) 380 / 3 / 50 415 / 3 / 50 440 / 3 / 50

380 / 3 / 60

220 / 3 / 60

460 / 3 / 60

1. 2. 3.

FLA LRA FLA LRA FLA LRA FLA LRA FLA LRA

Am p

Am p

Am p

Am p

Am p

Motor Size, KW 0.55

0.75

1.1

1.5

2.2

3

4

5.5

7.5

11

15

18.5

22

30

1.7

2.0

2.6

3.7

5.2

7.1

9.2

7.0

9.0

11.6

17.1

25.6

35.1

49.4

12.0

15.2

21.1

29.1

36.0

43.0

58.0

72.0

117.0 163.0 216.0 255.0 308.0 369.0

1.5

1.8

2.3

3.2

4.7

6.5

8.0

10.6

13.9

6.0

8.2

11.2

16.0

25.0

33.5

43.0

65.0

104.0 135.0 197.0 227.8 275.4 330.7

1.6

1.9

2.6

3.4

4.9

6.7

8.4

11.7

15.0

21.6

6.0

7.5

10.3

15.3

22.8

31.3

44.0

65.0

99.0

136.0 189.0 227.8 275.4 330.7

26.0

37.4

18.5

26.4

28.4

34.0

41.0

53.0

3.4

4.5

5.9

8.3

11.5

14.7

20.3

13.0

17.8

26.5

39.5

54.2

78.2

112.5 171.5 238.0 327.0 465.0 561.0 672.0

1.6

1.7

2.3

3.4

4.5

6.2

7.8

10.2

13.5

7.0

8.7

12.0

18.0

26.3

36.5

51.0

75.0

114.0 156.0 218.0 255.0 308.0 369.0

35.0

75.0

58.0

2.8

24.9

62.0

43.0

10.4

18.4

49.2

36.0

40.9

100.0

54.2

Motors upto 3 KW are STAR connected for all power supplies, except for 220V/3Ph/60Hz which is DELTA connected. The motors including and above 4 KW are DELTA connected and are suitable for STAR/DELTA starting. Refer inside of the motor terminal box for actual connections.

MAH - Series Page 9

NOMINAL CAPACITIES Nominal Capacity Rating - Cooling Coils Fin Spacing : 8 fpi ( 3.2 mm )

Model

Coil Area Rows

MAH

ft²

m²

12

15.00 24.00

2.5

0.23

16

15.00 31.00

3.2

0.30

24

21.00 32.50

4.7

0.44

32

24.00 38.50

6.4

0.60

40

24.00 48.00

8.0

0.74

50

30.00 48.00 10.0 0.93

62

36.00 50.00 12.5 1.16

80

36.00 64.00 16.0 1.49

100

45.00 64.00 20.0 1.86

120

45.00 76.80 24.0 2.23

150

48.00 90.00 30.0 2.79

200

60.00 96.00 40.0 3.72

250

60.00 120.00 50.0 4.65

320

72.00 128.00 64.0 5.95

400

90.00 128.00 80.0 7.43

450

90.00 144.00 90.0 8.36

4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8 4 6 8

Chilled Water Coils

Direct Expansion Coils

@ 80/67°F ( 26.7/19.4°C ) On-Coil DBT / WBT

@ 80/67°F ( 26.7/19.4°C )

& 45/55°F ( 7.2/12.8°C ) EWT/LWT

On-Coil DBT / WBT

Air Flow

Total

Sensible

Water Flow

Water

Total

Sensible

Rate

Capacity

Capacity

Rate

Pressure

Capacity

Capacity

cfm

l/s

1200

566

1600

755

2400 1133

3200 1510

4000 1888

5000 2359

6200 2926

8000 3775

10000 4719

12000 5663

15000 7078

20000 9438

25000 11797

32000 15101

40000 18876

45000 21235

MBh 22.7 34.1 44.2 41.1 56.6 61.4 61.7 85.0 92.5 85.5 109.6 127.1 96.4 141.9 163.9 120.5 177.4 204.9 151.8 222.3 256.1 251.0 314.1 358.6 313.8 392.6 448.2 340.3 482.9 549.8 441.9 592.9 636.9 596.1 797.4 858.3 775.7 971.5 1111.8 1004.1 1256.3 1434.2 1255.1 1570.4 1792.8 1255.3 1794.1 2047.9

KW 6.7 10.0 13.0 12.0 16.6 18.0 18.1 24.9 27.1 25.1 32.1 37.3 28.3 41.6 48.0 35.3 52.0 60.0 44.5 65.1 75.1 73.6 92.1 105.1 92.0 115.1 131.4 99.7 141.5 161.2 129.5 173.8 186.7 174.7 233.7 251.6 227.4 284.7 325.9 294.3 368.2 420.4 367.9 460.3 525.5 367.9 525.9 600.2

MBh 18.2 24.6 29.9 27.9 36.9 40.8 41.7 55.3 61.2 56.9 72.4 83.2 67.4 92.4 106.0 84.3 115.5 132.5 105.4 144.2 165.2 177.0 212.9 236.0 221.3 266.1 294.9 252.0 324.1 358.9 321.1 400.8 427.9 430.7 537.2 574.2 549.9 661.4 733.8 708.1 851.7 943.8 885.1 1064.6 1179.8 937.4 1208.6 1340.1

KW 5.3 7.2 8.8 8.2 10.8 11.9 12.2 16.2 17.9 16.7 21.2 24.4 19.8 27.1 31.1 24.7 33.8 38.8 30.9 42.3 48.4 51.9 62.4 69.2 64.9 78.0 86.4 73.9 95.0 105.2 94.1 117.5 125.4 126.2 157.4 168.3 161.2 193.9 215.1 207.5 249.6 276.6 259.4 312.0 345.8 274.8 354.2 392.8

MAH - Series Page 10

gpm 4.5 6.8 8.8 8.2 11.3 12.3 12.3 17.0 18.5 17.1 21.9 25.4 19.3 28.4 32.8 24.1 35.5 41.0 30.4 44.5 51.2 50.2 62.8 71.7 62.8 78.5 89.6 68.1 96.6 110.0 88.4 118.6 127.4 119.2 159.5 171.7 155.1 194.3 222.4 200.8 251.3 286.8 251.0 314.1 358.6 251.1 358.8 409.6

l/s 0.3 0.4 0.6 0.5 0.7 0.8 0.8 1.1 1.2 1.1 1.4 1.6 1.2 1.8 2.1 1.5 2.2 2.6 1.9 2.8 3.2 3.2 4.0 4.5 4.0 5.0 5.7 4.3 6.1 6.9 5.6 7.5 8.0 7.5 10.1 10.8 9.8 12.3 14.0 12.7 15.9 18.1 15.8 19.8 22.6 15.8 22.6 25.8

ft.wg 0.4 1.1 2.1 7.1 16.4 4.2 8.3 19.0 4.9 12.6 9.5 7.3 3.3 16.8 12.9 3.3 16.8 12.9 3.7 18.5 14.2 17.3 12.4 9.3 17.3 12.4 9.3 3.9 20.1 15.0 6.1 13.7 3.3 7.3 16.2 3.9 13.3 9.5 7.2 15.9 11.4 8.5 15.9 11.4 8.5 3.1 15.6 11.7

KPa 1.3 3.3 6.2 21.3 49.0 12.4 24.7 56.8 14.5 37.7 28.2 21.9 9.8 50.1 38.5 9.8 50.1 38.5 10.9 55.3 42.3 51.9 37.1 27.9 51.9 37.1 27.9 11.7 59.9 44.9 18.2 40.9 9.9 21.7 48.5 11.8 39.8 28.5 21.5 47.5 34.0 25.5 47.5 34.0 25.5 9.1 46.5 34.9

MBh 35.6 43.2 46.7 46.7 56.9 61.7 69.3 84.7 91.9 93.1 113.6 123.1 116.2 141.8 153.7 145.3 177.3 192.2 180.8 220.5 238.9 232.4 283.6 307.5 290.5 354.6 384.4 348.6 425.5 461.2 435.8 531.8 576.5 581.0 709.1 768.7 726.3 886.4 960.9 929.6 1134.6 1229.9 1162.0 1418.2 1537.4 1307.3 1595.5 1729.6

KW MBh 10.4 22.7 12.7 28.0 13.7 30.9 13.7 29.9 16.7 37.0 18.1 40.9 20.3 44.5 24.8 55.2 26.9 60.9 27.3 59.7 33.3 73.9 36.1 81.6 34.1 74.5 41.6 92.3 45.1 101.9 42.6 93.2 52.0 115.4 56.3 127.4 53.0 115.9 64.6 143.5 70.0 158.3 68.1 149.1 83.1 184.6 90.1 203.8 85.1 186.3 103.9 230.8 112.7 254.8 102.2 223.6 124.7 277.0 135.2 305.7 127.7 279.5 155.9 346.2 169.0 382.1 170.3 372.7 207.8 461.6 225.3 509.5 212.9 465.9 259.8 577.0 281.6 636.9 272.5 596.3 332.5 738.6 360.5 815.3 340.6 745.4 415.7 923.2 450.6 1019.1 383.2 838.6 467.6 1038.6 506.9 1146.4

KW 6.7 8.2 9.1 8.8 10.9 12.0 13.0 16.2 17.9 17.5 21.7 23.9 21.8 27.1 29.9 27.3 33.8 37.3 34.0 42.0 46.4 43.7 54.1 59.7 54.6 67.6 74.7 65.5 81.2 89.6 81.9 101.5 112.0 109.2 135.3 149.3 136.5 169.1 186.7 174.8 216.5 238.9 218.5 270.6 298.7 245.8 304.4 336.0

NOMINAL CAPACITIES Nominal Capacity Rating - Heating Coils H ot W ater C oils

Steam C oils

@ 70°F ( 21.1°C ) EA T

@ 70°F ( 21.1°C ) EA T & 2 psig

& 180/160°F ( 82.2/71.1°C ) EW T/LW T

( 0.14 bar ) steam pressure

Fin Spacing : 8 fpi ( 3.2 m m )

M odel

C oil A rea

MAH 12 16 24 32 40 50 62 80 100 120 150 200 250 320 400 450

ft² 15

24

15

31

21

32.5

24

38.5

24

48

30

48

36

50

36

64

45

64

45

76.8

48

90

60

96

60

120

72

128

90

128

90

144

R ows

m²

2.5

0.23

3.2

0.30

4.7

0.44

6.4

0.60

8.0

0.74

10.0

0.93

12.5

1.16

16.0

1.49

20.0

1.86

24.0

2.23

30.0

2.79

40.0

3.72

50.0

4.65

64.0

5.95

80.0

7.43

90.0

8.36

1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2

A ir Flow R ate cfm

l/s

1200

566

1600

755

2400 1133 3200 1510 4000 1888 5000 2359 6200 2926 8000 3775 #### 4719 #### 5663 #### 7078 #### 9438 #### #### #### #### #### #### #### ####

C apacity MBh 25.8 45.7 36.4 64.2 54.5 96.4 76.1 133.8 84.0 161.2 105.0 201.5 130.3 252.7 245.2 416.6 306.5 520.7 326.2 643.5 427.3 828.9 577.3 1041.4 756.6 1350.5 980.9 1750.0 1226.2 2082.9 1415.6 2386.7

KW 7.5 13.4 10.7 18.8 16.0 28.3 22.3 39.2 24.6 47.2 30.8 59.1 38.2 74.1 71.9 122.1 89.8 152.6 95.6 188.6 125.2 242.9 169.2 305.2 221.8 395.8 287.5 512.9 359.4 610.5 414.9 699.5

W ater Flow

W ater Pressure

R ate

D rop

gpm 2.6 4.6 3.6 6.4 5.4 9.6 7.6 13.4 8.4 16.1 10.5 20.1 13.0 25.3 24.5 41.7 30.7 52.1 32.6 64.4 42.7 82.9 57.7 104.1 75.7 135.1 98.1 175.0 122.6 208.3 141.6 238.7

l/s 0.2 0.3 0.2 0.4 0.3 0.6 0.5 0.8 0.5 1.0 0.7 1.3 0.8 1.6 1.5 2.6 1.9 3.3 2.1 4.1 2.7 5.2 3.6 6.6 4.8 8.5 6.2 11.0 7.7 13.1 8.9 15.1

ft.wg 1.8 1.4 3.6 2.9 4.2 3.3 6.4 5.0 1.7 3.0 1.7 3.0 1.7 3.3 9.4 6.9 9.4 6.9 2.2 10.9 3.5 16.6 4.1 6.6 7.5 11.8 8.8 14.0 8.8 6.5 12.1 8.8

K Pa 5.3 4.3 10.9 8.6 12.5 9.9 19.1 14.9 5.2 9.1 5.2 9.1 5.0 10.0 27.9 20.5 27.9 20.5 6.7 32.7 10.4 49.6 12.4 19.7 22.3 35.1 26.4 41.7 26.4 19.3 36.3 26.2

Capacity MBh 56.0 101.0 72.4 130.5 106.2 191.5 143.8 259.4 179.2 323.2 224.0 404.0 280.0 505.0 354.1 638.7 450.9 813.3 536.0 966.8 672.0 1212.0 896.0 1616.0 1120.0 2020.0 1433.6 2585.6 1792.0 3232.0 2016.0 3636.0

KW 16.4 29.6 21.2 38.2 31.1 56.1 42.1 76.0 52.5 94.7 65.7 118.4 82.1 148.0 103.8 187.2 132.2 238.4 157.1 283.4 197.0 355.2 262.6 473.7 328.3 592.1 420.2 757.8 525.2 947.3 590.9 1065.7

For Capacities at different air conditions please refer to SKM Computer Selection Software

Fin Spacing Correction Factor Fin Spacing FPI

mm

8 10 12

3.2 2.5 2.1

Correction Factor 1.00 1.06 1.13

MAH - Series Page 11

AIR PRESSURE DROP Air Pressure Drop 300 0.10

DDCT

A IR PR ESSU R E D R OP, in wg C o il F ace Velo city, fp m 350 400 450 500 550 0.14 0.19 0.24 0.30 0.36

600 0.43

A IR PR ESSU R E D R OP, Pascals C o il F ace Velo city, m /s 1.5 1.8 2.0 2.3 2.5 2.8 3.0 25 35 47 60 75 90 107

MZNH, M ZNV

0.14

0.19

0.24

0.28

0.34

0.40

0.47

35

47

60

70

85

100

117

F IH P D = 2.0 inw g ( 498 Pa )

0.87

1.03

1.20

1.37

1.55

NR

NR

217

257

299

341

386

NR

NR

F A T, F A D H , F R D H , F TZ A F

0.08

0.09

0.10

0.12

0.15

0.18

0.21

20

22

25

30

37

45

52

H SEG, H SIG

0.03

0.04

0.05

0.06

0.07

0.08

0.09

7

10

12

15

17

20

22

HFF

0.30

0.39

0.48

0.61

0.71

0.79

0.90

75

97

120

152

177

197

224

H PS

0.20

0.27

0.35

0.43

0.54

0.63

0.74

50

67

87

107

135

157

184

C EH F

0.03

0.04

0.05

0.06

0.07

0.08

0.09

7

10

12

15

17

20

22

For Models

MAH-80 to 450

For Models

MAH-12 to 62

CCW , CDX p er ro w ( W ET ) C C W , C D X , C H W , C ST p er ro w ( D R Y ) CCW, CDX, p er ro w ( W ET ) C C W , C D X , C H W , C ST p er ro w ( D R Y )

8 fpi

0.03

0.03

0.04

0.05

0.06

0.08

0.09

7

9

11

13

16

19

22

10 fpi

0.03

0.04

0.05

0.06

0.08

0.09

0.11

8

10

13

16

19

23

27

12 fpi

0.04

0.05

0.06

0.08

0.09

0.11

0.13

9

12

15

19

23

27

31

8 fpi

0.02

0.03

0.03

0.04

0.05

0.06

0.07

5

7

8

10

12

15

17

10 fpi

0.02

0.03

0.04

0.05

0.06

0.07

0.08

6

8

10

12

15

18

21

12 fpi

0.03

0.04

0.05

0.06

0.07

0.08

0.10

7

9

12

15

18

21

24

8 fpi

0.05

0.06

0.08

0.09

0.11

0.13

0.15

11

15

19

23

28

32

38

10 fpi

0.06

0.07

0.09

0.11

0.13

0.16

0.18

14

18

23

28

33

39

45

12 fpi

0.06

0.08

0.11

0.13

0.16

0.18

0.21

16

21

26

32

39

46

53

8 fpi

0.04

0.05

0.06

0.07

0.08

0.10

0.12

9

11

14

18

21

25

29

10 fpi

0.04

0.06

0.07

0.09

0.10

0.12

0.14

11

14

17

21

25

30

35

12 fpi

0.05

0.07

0.08

0.10

0.12

0.14

0.16

12

16

20

25

30

35

41

Elim in ato r

0.02

0.04

0.06

0.08

0.10

0.11

0.12

5

10

15

20

25

27

30

DFC, DFDB

0.01

0.01

0.02

0.02

0.02

0.02

0.02

3

3

4

4

5

5

6

F IPI F PD = 0.5 inw g ( 125 Pa

AF

0.05

0.07

0.10

0.12

0.18

0.22

0.26

12

17

25

30

45

55

65

)

SF

0.15

0.17

0.20

0.23

0.27

0.31

0.35

37

42

50

57

67

77

87

F IPV D = 0.5 inw g ( 125 Pa )

F IPI x 0.7

F IPI x 0.7

F IB G1D = 1.0 inw g ( 249 Pa )

0.22

0.30

0.38

0.49

0.60

0.73

0.86

55

75

95

122

149

182

214

F IB G2D = 1.0 inw g ( 249 Pa )

0.20

0.27

0.35

0.45

0.55

0.67

0.79

50

67

87

112

137

167

197

F IB G3D = 1.0 inw g ( 249 Pa )

0.18

0.25

0.32

0.41

0.50

0.61

0.72

45

62

80

102

125

152

179

F IR L

0.06

0.09

0.12

0.15

0.18

0.22

0.26

15

22

30

37

45

55

65

B EX , B M X

0.06

0.08

0.10

0.11

0.13

0.14

0.16

15

20

25

27

32

35

40

A SL

0.18

0.25

0.32

0.41

0.50

0.61

0.72

45

62

80

102

125

152

179

A IL

0.03

0.04

0.05

0.06

0.07

0.08

0.1

7

10

12

15

17

20

25

SA T1

0.04

0.05

0.06

0.08

0.09

0.11

0.14

10

12

15

20

22

27

35

SA T2

0.05

0.06

0.07

0.09

0.11

0.13

0.16

12

15

17

22

27

32

40

PEM 1

0.03

0.05

0.06

0.07

0.08

0.09

0.10

7

12

15

17

20

22

25

PEM 2

0.04

0.07

0.08

0.09

0.11

0.12

0.13

10

17

20

23

27

30

33

PEM 3

0.06

0.10

0.12

0.14

0.16

0.18

0.20

15

25

30

35

40

45

50

For sections not mentioned, please consult SKM

MAH - Series Page 12

FAN PERFORMANCE

Type FAT FADH FAT FADH FAT FADH FAT FADH FRDH FAT FADH FRDH FAT FADH FRDH FTZAF FAT FADH FRDH FTZAF FAT FADH FRDH TZF FADH FRDH FTZAF FADH FRDH FTZAF ADH FADH FTZAF FADH FRDH FTZAF FADH FRDH FTZAF FADH FRDH FTZAF FADH FRDH FTZAF FADH FRDH FTZAF

12 16 24 32 40

50

62

80

100 120 150 200 250 320 400 450

Fl ow

Fa n

MAH

Ai r

Mo de l

Fan Performance

cfm

l/s

1200

566

1600

755

2400

1133

3200

1510

4000

1888

5000

2359

6200

2926

8000

3775

10000 4719

12000 5663

15000 7078

20000 9438

25000 11797

32000 15101

40000 18876

45000 21235

Total Static Pressure, inwg (Pa) 0.5 (125) 1.0 (250) 1.5 (375) 2.0 (500) 2.5 (625) 3.0 (750) 3.5 (875) 4.0 (1000) 5.0 (1250) rpm 822 808 704 748 831 859 634 600 1669 503 658 2001 546 472 1301 1183 438 517 1548 1404 491 491 1398 1283 461 1258 1202 397 1064 1035 332 925 885 313 863 823 268 755 736 240 678 664 212 616 605 226 682 671

kW 0.12 0.16 0.19 0.21 0.43 0.47 0.53 0.48 0.56 0.54 0.78 0.96 0.87 0.72 0.85 0.65 0.81 1.15 1.41 1.03 1.37 1.60 1.93 1.46 1.99 2.35 2.00 2.15 2.51 2.18 2.59 3.01 2.47 3.78 4.49 3.48 4.63 5.47 4.46 5.94 7.16 5.95 7.31 9.10 7.61 9.66 12.36 10.08

rpm 1126 1144 953 1032 1012 1071 819 794 1853 671 819 2152 690 627 1442 577 644 1668 602 598 1499 559 1347 488 1150 1113 415 999 962 386 925 886 334 811 795 297 728 713 263 660 647 272 722 709

kW 0.23 0.29 0.33 0.36 0.60 0.65 0.77 0.74 0.76 0.86 1.07 1.19 1.22 1.12 1.14 1.27 1.58 1.77 1.93 2.13 2.40 2.63 2.92 2.93 3.20 2.88 3.59 3.83 3.35 5.10 5.57 4.50 6.30 6.84 5.82 7.94 8.86 7.74 9.91 11.13 9.86 12.51 14.60 12.67

rpm 1384 1419 1177 1275 1184 1270 992 972 2021 821 974 2298 823 772 1569 703 769 1780 710 704 1592 654 1431 575 1229 497 1067 1034 453 983 945 395 863 849 352 775 758 312 703 686 317 761 744

kW 0.35 0.44 0.49 0.55 0.80 0.86 1.02 1.05 0.97 1.24 1.40 1.43 1.63 1.59 1.46 1.79 2.08 2.14 2.53 2.77 2.87 3.37 3.50 3.83 3.89 4.77 4.66 4.21 6.59 6.67 5.58 8.14 8.24 7.21 10.32 10.62 9.50 12.81 13.28 12.04 15.59 16.95 15.13

rpm 1606 1648 1377 1487 1349 1458 1148 1133 2174 957 1120 2436 947 905 1688 1591 815 888 1885 812 808 1680 745 1509 659 1303 574 1132 517 1037 1001 451 913 899 405 821 800 359 744 722 360 799 778

kW 0.48 0.59 0.67 0.75 1.01 1.09 1.28 1.40 1.19 1.65 1.77 1.69 2.08 2.12 1.79 1.55 2.34 2.65 2.52 3.17 3.51 3.36 4.20 4.10 4.86 4.60 6.11 5.53 8.26 7.80 6.71 10.13 9.68 8.62 13.04 12.44 11.27 16.03 15.53 14.23 18.94 19.40 17.57

rpm 1802 1845 1557 1675 1507 1633 1291 1279 2316 1080 1257 2566 1062 1026 1798 1714 917 1001 1984 1854 908 909 1765 1654 832 1585 1515 739 1374 1328 646 1194 577 1090 1055 503 961 947 454 864 841 403 784 758 401 835 810

kW 0.61 0.75 0.84 0.96 1.24 1.35 1.57 1.76 1.41 2.09 2.18 1.96 2.57 2.70 2.13 1.89 2.93 3.27 2.92 2.48 3.85 4.34 3.85 3.23 5.11 4.70 4.25 6.00 5.34 4.91 7.56 6.42 10.08 8.96 7.89 12.28 11.15 10.08 16.03 14.32 13.10 19.55 17.85 16.47 22.57 21.93 20.03

rpm 1978 2019 1721 1844 1657 1797 1422 1412 2449 1194 1386 2688 1170 1137 1903 1830 1009 1107 2079 1957 997 1006 1847 1743 913 1658 1588 814 1441 1396 714 1255 1228 634 1141 1108 552 1008 994 500 906 881 445 822 792 441 870 84.2

kW 0.75 0.91 1.01 1.19 1.48 1.61 1.87 2.15 1.63 2.54 2.61 2.23 3.09 3.31 2.48 2.25 3.54 3.93 3.33 2.87 4.55 5.26 4.36 3.73 6.10 5.32 4.94 7.24 6.09 5.63 9.11 7.35 6.93 12.03 10.16 9.11 14.55 12.66 11.57 19.23 16.26 14.96 23.36 20.26 18.75 26.48 24.53 22.53

rpm 2178 1872 1999 1800 1951 1535 2575 1506 2805 1239 2002 1942 1094 1207 2169 2058 1080 1098 1925 1829 991 1728 1661 884 1506 1461 777 1314 1289 687 1190 1158 598 1053 1039 543 947 919 484 858 826 479 905 873

kW 1.07 1.19 1.42 1.73 1.90 2.55 1.86 3.05 2.50 3.95 2.85 2.62 4.19 4.63 3.75 3.29 5.28 6.25 4.89 4.25 7.14 5.95 5.46 8.57 6.86 6.37 10.74 8.32 7.90 14.10 11.40 10.37 16.96 14.21 13.11 22.62 18.26 16.89 27.44 22.74 21.10 30.65 27.21 25.08

Performance shown at nominal airflow rates. For other airflow rates refer to SKM computer selection.

MAH - Series Page 13

rpm 2323 2143 1936 2095 1648 2695 1620 2916 1335 2098 2048 1301 2257 2155 1186 2002 1914 1064 1797 1732 951 1568 1526 836 1372 1347 1238 1208 1098 1083 986 957 522 894 859 938 904

kW 1.24 1.67 1.99 2.19 2.96 2.10 3.52 2.78 4.63 3.22 3.01 5.36 4.18 3.71 7.29 5.42 4.80 8.24 6.60 6.10 9.98 7.66 7.14 12.46 9.31 8.89 12.67 11.67 15.81 14.70 20.30 18.87 31.78 25.28 23.52 29.95 27.68

rpm 2360 1856 2922 1828 3126 1509 2278 2249 2422 2340 2149 2076 1929 1870 1074 1688 1988 1483 1459 1304 1183 1168 1061 1031 962 924 963

kW 2.81 3.82 2.59 4.49 3.35 6.05 3.99 3.82 5.06 4.60 6.53 5.93 7.94 7.45 13.01 9.30 9.29 11.41 10.95 14.47 19.12 18.02 24.54 22.99 30.55 28.54 33.05

DIMENSIONAL DATA Dimensional Data

CEHF CHW

HSIG L

15 (381)

J

6 (152)

32 (813)

12

38 965

24 32

46 1168 52 1321

40 50

64 1626

62 80 100 120 150 200 250 320 400 450

h

33 838 36 914 42 1067 48 1219

EH

L

56 1422

16 406

3.94 100

L1

L2

48 1219

14 356

28 711

18 457

L

32 813 36 914

60 1524

34 864

21 533

66 1676

40 1016

24 610

74 1880

45 1143

18 457

78 1981 92 2337 104 2642 112 2845 136 3454 144 3658 160 4064

57 1448 60 1524 72 1829 84 2134 102 2591

32 813 CHANNEL BASE FRAME

16

H

3.94 100

36 914 24 610

42 1067

58 1473

106 2692

70 1778

46 1168

118 2997

82 2083

54 1372

140 3556

102 2591

40 1016

4.92 125

52 1321

90 2286

6 (152)

J

FAT FADH/FRDH/FTZAF N J K N J K 13.13 10.31 11.73 13.33 11.34 11.34 334 262 298 339 288 288 19 19 483 11.38 13.03 483 12.68 12.68 289 331 322 322 21 21 533 13.43 15.55 533 341 395 15.91 15.91 404 404 24 22.73 15.91 18.54 610 577 404 471 22 19.96 19.96 559 507 507 21 533 18.82 21.93 478 557 28 27.8 22.40 22.40 711 706 569 569 26.44 25.12 25.12 671 638 638 31.9 28.15 28.15 811 715 715 36.23 31.54 31.54 920 801 801 38.32 35.35 35.35 973 898 898 48.17 39.65 39.65 1224 1007 1007 49.75 44.49 44.49 1264 1130 1130 47 1194 49.88 49.88 1267 1267 55 1397

ALL DIMENSIONS ARE IN INCHES (MM). FOR SECTIONS NOT MENTIONED CONSULT SKM. FOR BASE FRAME DETAILS REFER PAGE 16. FOR HEATING & COOLING COIL SECTIONS DETAILS REFER PAGE 16 & 17.

MAH - Series Page 14

HPS

FAN POSITION 6

FIHP W

SHEET METAL BASE FRAME

SIZE

15 (381)

L

L

L2

15 (381)

6 (152)

HFF

W

15 (381)

CST

FAN POSITION 3

HSEG J

FAN POSITION 4

L

J

L

FAN POSITION 5

H

6 (152)

h

L1

J

FAN POSITION 1

7 (178)

EH

FAN PLAN VIEW

L1

J

FAN POSITION 2

EH H

MZNH MZNV

AIRFLOW DIRECTION

7 (178)

L

10 (254)

L

K

DDCT

h

H

W

7 (178)

HUMIDIFIER HEATING SECTIONS SECTIONS

FAN SECTION ARRANGEMENTS 6 (152)

BLOW THROUGH SECTIONS

N

COMMON SIDE VIEW

32 (813)

15 (381)

DIMENSIONAL DATA Dimensional Data COOLING SECTIONS

DAMPER AND BY PASS SECTIONS

FILTER SECTIONS

EXHAUST AND MIXING BOX

LOUVERS

SOUND ATENUATOR

HEAT RECOVERY SECTIONS

PLENUMS

12 (305)

PEM1

ASL

SAT1 32 (813)

18 (457)

H 56 (1422)

H L

24 (610)

36 (914)

RHR

3 (76)

PEM3

B 7 (178)

PEM2

SAT2

AIL

7 (178)

FIPBG1

30 (762)

A L

L

BMX PLAN VIEW

L

FIBGI

L1

7 (178)

FIPV

BMX, BMXP

A

H

DFBP

CCWE, CDXE

5 (127)

L

RHP

7 (178) EH

L

7 (178)

BEX

FIPI

DFC

CCW, CDX

A

34 (864)

4R/6R L L1

8R L

L1

EH

L

L

20 508 8 203

22 559

28 711

22 28 559 711

14 356

L

A

18 457

12.5 318

40 1016 24 610

18.5 470

30 762

24.5 622

36 914

30.5 775

56 1422

34 864 28 711 20 508

68 1727

B

20 508 24 610 26 660 32 813 40 1016 50 1270

52 1321 22 559

30 (762)

42 1067

36.5 927

60 1524 62 1575 74 1880 90 2286 96 2438 120 3048 128 3251

26 660

*

80 2032

48 1219

42.5 1080

134 3404

FOR FIBG2 & FIPBG2 ADD 6 (152) TO FIBG1 & FIPBG1 RESPECTIVELY. FOR FIBG3 & FIPBG3 ADD 14 (356)TO FIBG1 & FIPBG1 RESPECTIVELY.

MAH - Series Page 15

L

42 1067 50 1270

SIZE 12 16 24 32 40

64 1626

50 62 80 100

76 1930

120 150

94 2388 124 3150 148 3759

200 250 320 400 450

PLAN VIEW

COIL CONNECTION SIZES BASE FRAME DETAILS Base Frame Details SHEET METAL BASE FRAME

MODELS: 12 TO 100

CHANNEL BASE FRAME

h

MODELS: 120 TO 450

h

FOR SIZES 12 TO 100 UNITS WOULD BE SHIPPED UPTO MAXIMUM FRAME LENGTHS OF 124 INCHES (3150 mm), ABOVE THIS, UNITS WOULD BE SHIPPED IN KNOCKDOWN SECTIONS. FOR CEILING SUSPENDED UNITS (MODELS 12-100) ADDITIONAL STRUCTRAL STEEL CHANNEL FRAME WOULD BE PROVIDED. WHEREVER NECESSARY SKM WOULD PROVIDE STEEL STRUCTURE CHANNEL FRAME FOR MODELS 12 TO 100.

Coil Connection Sizes CCW M o de l

4 R ows 12 16 24 32 40 50 62 80 10 0 12 0 15 0 200 250 320 400 450

inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm

CD X

In & O u t

D r ai n

6 R ows

L i qu i d

I n /O u t

In 1 R ow 2 R ows

8 R ows

4 R ows

6 R ows

8 R ows

4 R ows

6 R ows

8 R ows

1, 2 R ows

1 1/4 1 1/8 1 1/8 1 1/8 32 29 29 29 1 1/4 1 1/8 1 3/8 1 3/8 32 29 35 35 1 1/4 1 3/8 1 3/8 1 3/8 32 35 35 35 1 1/4 1 3/8 1 5/8 1 5/8 32 35 41 41 1 1/2 1 3/8 1 5/8 2 1/8 38 35 41 54 1 1/2 1 5/8 2 1/8 2 1/8 38 41 54 54 1 1/2 2 1/8 2 1/8 2 1/8 38 54 54 54 1 1/2 2 1/8 2 1/8 2 1/8 38 54 54 54 1 1/2 2 1/8 2 5/8 2 5/8 38 54 67 67 1 1/2 2 1/8 2 5/8 2 5/8 38 54 67 67 1 1/2 2 5/8 2 5/8 2 5/8 38 67 67 67 1 1/2 2 5/8 3 1/8 3 1/8 38 67 79 79 1 1/2 x 2 3 1/8 3 1/8 2 5/8 x 2 38 x 2 79 79 67 x 2 1 1/2 x 2 2 5/8 x 2 2 5/8 x 2 3 1/8 x 2 38 x 2 67 x 2 67 x 2 79 x 2 1 1/2 x 2 2 5/8 x 2 3 1/8 x 2 3 1/8 x 2 38 x 2 67 x 2 67 x 2 79 x 2 1 1/2 x 2 3 1/8 x 2 3 1/8 x 2 3 1/8 x 2 38 x 2 67 x 2 67 x 2 79 x 2

3/8 10 1/2 13 1/2 13 1/2 13 5/8 16 5/8 16 5/8 16 7/8 22 7/8 22 7/8 22 7/8 22 1 1/8 29 1 1/8 29 1 1/8 29 1 1/8 x 2 29 x 2 1 1/8 x 2 29 x 2

3/8 10 1/2 13 1/2 13 5/8 16 5/8 16 5/8 16 7/8 22 7/8 22 7/8 22 7/8 22 1 1/8 29 1 1/8 29 1 1/8 29 1 1/8 x 2 29 x 2 1 1/8 x 2 29 x 2 1 1/8 x 2 29 x 2

1/2 13 1/2 13 1/2 13 5/8 16 5/8 16 5/8 16 7/8 22 7/8 22 7/8 22 1 1/8 29 1 1/8 29 1 1/8 29 1 1/8 x 2 29 x 2 1 1/8 x 2 29 x 2 1 1/8 x 2 29 x 2 1 1/8 x 2 29 x 2

7/8 7/8 22 22 7/8 1 1/8 22 29 1 1/8 1 1/8 29 29 1 1/8 1 3/8 29 35 1 3/8 1 3/8 35 35 1 3/8 1 3/8 35 35 1 5/8 1 5/8 41 41 1 5/8 2 1/8 41 54 2 1/8 2 1/8 54 54 2 1/8 2 1/8 54 54 2 1/8 2 5/8 54 67 2 5/8 2 5/8 67 67 2 5/8 2 5/8 67 67 2 5/8 2 5/8 x 2 67 67 x 2 2 5/8 x 2 2 5/8 x 2 67 x 2 67 x 2 2 5/8 x 2 2 5/8 x 2 67 x 2 67 x 2

7/8 22 1 1/8 29 1 1/8 29 1 3/8 35 1 3/8 35 1 5/8 41 1 5/8 41 2 1/8 54 2 1/8 54 2 1/8 54 2 5/8 67 2 5/8 67 2 1/8 x 2 54 x 2 2 5/8 x 2 67 x 2 2 5/8 x 2 67 x 2 2 5/8 x 2 67 x 2

7/8 22 7/8 22 7/8 22 1 1/8 29 1 1/8 29 1 1/8 29 1 3/8 35 1 3/8 35 1 5/8 41 1 5/8 41 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 x 2 54 x 2 2 1/8 x 2 54 x 2

MAH - Series Page 16

CS T

CH W S u ct i o n

1 5/8 41 1 5/8 41 1 5/8 41 1 5/8 41 1 5/8 41 1 5/8 41 2 1/8 54 2 1/8 54 2 5/8 67 2 5/8 67 2 5/8 67 2 5/8 67 2 5/8 67 2 5/8 67 2 5/8 67 2 5/8 67

Out

2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 5/8 67 2 5/8 67 2 5/8 67 2 5/8 67 3 1/8 79 3 1/8 79 3 1/8 79 3 1/8 79 3 1/8 79 3 1/8 79

1 R ow 2 R ows 1 3/8 35 1 3/8 35 1 3/8 35 1 3/8 35 1 3/8 35 1 3/8 35 1 5/8 41 1 5/8 41 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54

2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54 2 1/8 54

COIL CONNECTION LOCATIONS Coil Connection Locations CHW, CCW D4

62 80 100 120 150 200 250 320 400 450

A5

A1

A1

CDXE

D4

D4 D3

D3

LIQUID 2x Ø

LIQUID 2x Ø

SUCTION 2x Ø

SUCTION 2x Ø

2 Rows D3 D4 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.1 8.3 130 212 5.7 8.9 145 227 5.7 8.9 145 227 5.7 8.9 145 227 5.7 8.9 145 227 5.7 8.9 145 227

D2

D1 7.2 184 7.2 184 7.2 184 7.2 184 7.2 184 7.2 184 7.2 184 8.7 222 8.7 222 8.7 222 8.7 222 9.3 237 9.3 237 9.3 237 9.3 237 9.3 237

4 Rows D2 D3 10.2 5.9 260 151 10.2 5.9 260 151 10.2 5.9 260 151 10.2 5.9 260 151 10.2 5.9 260 151 10.2 5.9 260 151 10.2 5.9 260 151 11.7 6.8 298 172 11.7 6.8 298 172 11.7 6.8 298 172 11.7 6.8 298 172 12.3 7.4 313 187 12.3 7.4 313 187 12.3 7.4 313 187 12.3 7.4 313 187 12.3 7.4 313 187

A7 A1

D1

NO. OF ROWS 6 Rows D4 D1 D2 D3 8.5 7.2 10.2 5.1 217 184 260 129 8.5 7.2 10.2 5.1 217 184 260 129 8.5 7.2 10.2 5.1 217 184 260 129 8.5 7.2 10.2 5.1 217 184 260 129 8.5 7.2 10.2 5.1 217 184 260 129 8.5 7.2 10.2 5.1 217 184 260 129 8.5 7.2 10.2 5.1 217 184 260 129 10.7 8.7 11.7 5.5 271 222 298 139 10.7 8.7 11.7 5.5 271 222 298 139 10.7 8.7 11.7 5.5 271 222 298 139 10.7 8.7 11.7 5.5 271 222 298 139 11.3 9.3 12.3 6.1 286 237 313 154 11.3 9.3 12.3 6.1 286 237 313 154 11.3 9.3 12.3 6.1 286 237 313 154 11.3 9.3 12.3 6.1 286 237 313 154 11.3 9.3 12.3 6.1 286 237 313 154

D2

SINGLE D4 9.4 239 9.4 239 9.4 239 9.4 239 9.4 239 9.4 239 9.4 239 12.0 304 12.0 304 12.0 304 12.0 304 12.6 319 12.6 319 12.6 319 12.6 319 12.6 319

D1 8.7 222 8.7 222 8.7 222 8.7 222 8.7 222 8.7 222 8.7 222 10.2 260 10.2 260 10.2 260 10.2 260 10.8 275 10.8 275 10.8 275 10.8 275 10.8 275

8 Rows D2 D3 11.7 5.7 298 145 11.7 5.7 298 145 11.7 5.7 298 145 11.7 5.7 298 145 11.7 5.7 298 145 11.7 5.7 298 145 11.7 5.7 298 145 13.2 5.7 336 144 13.2 5.7 336 144 13.2 5.7 336 144 13.2 5.7 336 144 13.8 6.3 351 159 13.8 6.3 351 159 13.8 6.3 351 159 13.8 6.3 351 159 13.8 6.3 351 159

MAH - Series Page 17

D4 11.8 299 11.8 299 11.8 299 11.8 299 11.8 299 11.8 299 11.8 299 14.8 375 14.8 375 14.8 375 14.8 375 15.4 390 15.4 390 15.4 390 15.4 390 15.4 390

A6

A5

A7 A6

A5

DRAIN Ø

A1

A2

DRAIN Ø

A1

DRAIN Ø

A3

A4

IN 2x Ø

A3

A2

DRAIN Ø

A4

OUT 2x Ø

IN 2x Ø

inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm

D2

CDX

D3

OUT 2x Ø

1, D1 6.7 171 6.7 171 6.7 171 6.7 171 6.7 171 6.7 171 6.7 171 6.7 171 6.7 171 6.7 171 6.7 171 7.3 186 7.3 186 7.3 186 7.3 186 7.3 186

DRAIN Ø

D1

D4

A1

DOUBLE CIRCUITING

50

SUCTION Ø

D2

D3

SIZE

40

SUCTION Ø DRAIN Ø

CCWE

D1

32

LIQUID Ø

A1

D1

D4

24

D3

LIQUID Ø

DRAIN Ø

DRAIN Ø A1

DRAIN Ø

CHW, CCW

16

IN Ø

D4 D3

A2

IN Ø

D1

12

D4

OUT Ø A2

OUT Ø

CDXE

D3

OUT Ø A2

IN Ø

CDX

D4 D3

D1

A1

SINGLE CIRCUITING

D4

CCWE

A5

CST

A1 14.2 360 14.2 360 14.2 360 14.2 360 14.2 360 14.2 360 14.2 360 14.7 373 14.7 373 14.7 374 14.7 374 15.1 385 16.1 410 16.1 410 16.1 410 16.1 410

CIRCUIT A2 A5 19.2 18.2 487 461 19.2 18.2 487 461 25.2 21.8 639 553 28.2 23.6 715 599 28.2 23.6 715 599 34.2 27.2 868 690 40.2 30.8 1020 781 40.7 31.3 1033 794 49.7 36.7 1262 932 49.7 36.7 1263 932 52.7 38.5 1339 978 65.1 46.1 1655 1172 66.1 47.1 1680 1197 78.1 54.3 1985 1380 96.1 65.1 2442 1655 96.1 65.1 2442 1655

DOUBLE A2 14.2 360 14.2 360 14.7 373 16.2 411 16.2 411 19.2 487 22.2 563 22.7 576 27.2 690 27.2 691 28.7 729 35.1 893 36.1 918 42.1 1070 51.1 1299 51.1 1299

A3 21.7 550 21.7 550 24.7 627 26.2 665 26.2 665 29.2 741 32.2 817 32.7 830 37.2 944 37.2 945 38.7 983 45.1 1147 46.1 1172 52.1 1324 61.1 1553 61.1 1553

CIRCUIT A4 A5 21.7 13.7 550 349 21.7 13.7 550 349 25.2 15.5 639 395 28.2 16.4 715 418 28.2 16.4 715 418 34.2 18.2 868 463 40.2 20.0 1020 509 40.7 20.6 1033 522 49.7 23.3 1262 591 49.7 23.3 1263 592 52.7 24.2 1339 614 65.1 28.2 1655 717 66.1 29.2 1680 742 78.1 32.8 1985 834 96.1 38.2 2442 971 96.1 38.2 2442 971

A6 21.7 550 21.7 550 24.7 627 26.2 665 26.2 665 29.2 741 32.2 817 32.7 830 37.2 944 37.2 945 38.7 983 45.1 1147 46.1 1172 52.1 1324 61.1 1553 61.1 1553

A7 21.2 540 21.2 540 26.0 662 28.4 723 28.4 723 33.2 844 38.0 966 38.6 979 45.8 1162 45.8 1163 48.2 1224 58.2 1479 59.2 1504 68.8 1748 83.2 2114 83.2 2114

WEIGHTS Weights MAH lbs DDCT kg lbs MZNH & MZNV kg lbs FIHP kg lbs FAT kg lbs FADH kg lbs FRDH kg lbs FTZAF kg lbs HSEG kg lbs DRY kg HSIG lbs WET kg lbs DRY kg HFF lbs WET kg lbs DRY kg HPS lbs WET kg lbs CEHF kg lbs 15" Coil Fram e (381mm) kg (CCW, lbs 22" CDX , CHW, (559mm) kg lbs 28" CST) (711mm) kg Alum inum lbs 8 fpi Coil block (3.2mm) kg lbs 10 fpi per row (2.5mm) kg (CCW, lbs 12 fpi CDX , CHW, (2.1mm) kg CST) Copper lbs 8 fpi Coil block (3.2mm) kg lbs 10 fpi per row (2.5mm) kg (CCW, lbs 12 fpi CDX , CHW, (2.1mm) kg CST) lbs Water / row (CCW,CHW kg

12 104 47 241 110 228 104 168 76 175 80 82 37 116 53 202 92 350 159 411 187 189 86 379 172 87 39 82 37 102 47 120 54 8.8 4.0 9.1 4.1 9.3 4.2 11.1 5.0 11.8 5.4 12.6 5.7 1.4 0.6

16 116 53 267 121 258 117 188 85 197 90 91 41 131 59 235 107 391 178 464 211 210 96 440 200 97 44 91 41 113 51 132 60 9.9 4.5 10.2 4.6 10.5 4.8 12.8 5.8 13.8 6.3 14.8 6.7 1.8 0.8

24 127 58 329 149 289 132 202 92 211 96 98 44 140 64 243 111 400 182 474 215 220 100 450 205 107 48 98 44 121 55 141 64 13.6 6.2 14.0 6.4 14.5 6.6 17.8 8.1 19.3 8.8 20.8 9.5 2.6 1.2

32 144 66 390 177 337 153 250 113 263 120 274 124 109 49 156 71 273 124 437 199 520 237 242 110 502 228 121 55 109 49 134 61 156 71 16.6 7.6 17.2 7.8 17.9 8.1 22.3 10.1 24.3 11.1 26.4 12.0 3.5 1.6

40 165 75 441 200 390 177 291 132 290 132 300 136 122 55 179 81 323 147 498 226 600 273 274 125 594 270 135 61 122 55 150 68 174 79 18.6 8.5 19.4 8.8 20.2 9.2 25.7 11.7 28.3 12.9 30.8 14.0 4.3 1.9

50 177 81 512 233 429 195 332 151 371 169 391 178 394 179 128 58 188 86 333 151 507 231 610 277 284 129 604 274 146 67 128 58 158 72 183 83 22.8 10.4 23.8 10.8 24.7 11.2 31.7 14.4 34.8 15.8 38.0 17.3 5.3 2.4

62 191 87 608 276 497 226 409 186 413 188 433 197 436 198 136 62 199 90 343 156 520 236 622 283 296 135 616 280 158 72 136 62 167 76 194 88 27.5 12.5 28.7 13.1 29.9 13.6 38.6 17.5 42.6 19.4 46.6 21.2 6.6 3.0

80 279 127 780 355 615 280 499 227 528 240 564 256 554 252 163 74 238 108 414 188 617 280 742 337 360 164 750 341 190 86 163 74 204 93 238 108 53.3 24.2 56.2 25.6 59.1 26.9 80.1 36.4 89.7 40.8 99.3 45.2 15.7 7.1

lbs

5

6

9

13

16

20

25

32

40

48

60

80

kg

2

3

4

6

7

9

11

15

18

22

27

36

Fin Spacing

Fin Spacing

Length

MODEL

Elim inator

MAH - Series Page 18

100 120 150 200 250 306 359 400 491 573 139 163 182 223 261 1002 1291 1458 1889 2273 455 587 663 858 1033 686 810 916 1131 1336 312 368 417 514 607 664 896 1039 1345 1865 302 407 472 611 848 687 926 1085 1449 1961 312 421 493 659 892 662 939 1116 1520 2071 301 427 507 691 941 173 201 218 270 308 79 91 99 123 140 255 291 329 398 459 116 132 150 181 208 431 499 563 650 765 196 227 256 296 348 634 730 798 896 1040 288 332 363 407 473 758 877 965 1075 1258 345 399 439 489 572 376 439 479 557 644 171 200 218 253 293 766 899 999 1117 1324 348 409 454 508 602 209 243 272 342 398 95 110 124 155 181 173 201 218 270 308 79 91 99 123 140 217 253 275 334 382 99 115 125 152 174 254 297 323 388 446 115 135 147 177 203 65.6 75.0 90.0 116.8 139.9 29.8 34.1 40.9 53.1 63.6 69.2 79.4 95.5 124.1 149.1 31.5 36.1 43.4 56.4 67.8 72.9 83.8 101.0 131.4 158.2 33.1 38.1 45.9 59.7 71.9 99.1 115.2 140.3 183.9 223.7 45.0 52.4 63.8 83.6 101.7 111.1 129.7 158.3 207.9 253.8 50.5 58.9 72.0 94.5 115.4 123.1 144.1 176.4 232.0 283.8 56.0 65.5 80.2 105.4 129.0 19.6 23.2 28.7 38.2 47.2 8.9 10.5 13.1 17.4 21.5

320 649 295 2678 1217 1550 704 2235 1016 2393 1088 2634 1197 335 152 508 231 833 379 1108 503 1338 608 692 315 1412 642 448 203 335 152 415 188 483 219 175.5 79.8 187.2 85.1 198.9 90.4 282.7 128.5 321.2 146.0 359.7 163.5 60.3 27.4

400 727 330 3257 1481 1778 808 2742 1246 2964 1347 3196 1453 359 163 544 247 869 395 1144 520 1374 625 728 331 1448 658 494 225 359 163 444 202 516 235 217.3 98.8 231.9 105.4 246.5 112.0 351.3 159.7 399.4 181.5 447.5 203.4 75.4 34.3

450 783 356 3460 1573 1934 879 2873 1306 3096 1407 3327 1512 380 173 588 267 949 431 1231 559 1487 676 777 353 1577 717 542 247 380 173 469 213 546 248 239.9 109.0 256.3 116.5 272.7 124.0 390.6 177.6 444.8 202.2 498.9 226.8 84.4 38.4

100

128

160

180

45

58

73

82

WEIGHTS Weights M OD EL DFC DFB P FIPI FIPV FIB G1 FIB G2 FIB G3 BEX BM X ASL AIL SAT1 SAT2 PEM 1 PEM 2 PEM 3 RH P RH R DSU per 10" (250m m ) ATC per 10" (250m m ) M otor Power M otor W eight

MAH

12

16

24

32

40

50

62

80

100

120

150

200

250

320

400

450

lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg

9 4 190 87 75 34 98 44 129 59 152 69 169 77 97 44 115 52 41 18 30 14 283 128 474 215 91 41 108 49 143 65 348 158 -

11 5 212 96 83 38 108 49 142 65 167 76 186 85 107 49 130 59 48 22 36 17 324 147 543 247 100 46 119 54 157 71 408 185 -

17 8 230 105 90 41 116 53 154 70 181 82 200 91 139 63 170 77 58 26 44 20 367 167 617 280 108 49 128 58 167 76 533 242 -

22 10 258 117 101 46 158 72 172 78 201 91 223 101 155 71 194 88 71 32 55 25 434 197 729 331 120 54 141 64 185 84 757 344 -

28 13 292 133 114 52 177 81 193 88 225 102 249 113 175 80 224 102 86 39 66 30 508 231 855 389 134 61 158 72 206 94 814 370 1003 456

35 16 312 142 121 55 212 96 205 93 239 109 264 120 188 85 246 112 99 45 77 35 564 256 949 431 141 64 166 76 217 99 962 437 1093 497

44 20 425 193 129 59 226 103 221 100 256 117 283 129 232 106 303 138 111 50 87 39 621 282 1047 476 149 68 176 80 230 105 1059 481 1112 506

56 25 561 255 153 70 280 127 273 124 319 145 354 161 285 130 384 175 133 61 105 48 753 342 1273 579 180 82 215 98 285 130 1297 589 1325 602

70 32 605 275 165 75 299 136 294 134 344 156 381 173 348 158 470 214 156 71 123 56 851 387 1441 655 192 87 229 104 303 138 1810 823 1501 682

84 38 816 371 190 87 351 160 346 157 405 184 450 204 411 187 556 253 182 83 144 66 995 452 1783 810 223 101 267 122 357 162 2212 1005 1806 821

105 48 904 411 209 95 383 174 381 173 445 202 493 224 452 206 627 285 214 97 171 78 1141 519 2043 929 243 110 291 132 387 176 2467 1121 2013 915

140 64 1239 563 262 119 459 209 463 210 535 243 590 268 600 273 823 374 272 124 218 99 1421 646 2513 1142 297 135 352 160 461 210 3632 1651 2522 1146

175 80 1515 689 302 137 529 240 537 244 621 282 684 311 698 317 973 442 327 149 263 120 1686 766 3051 1387 340 155 403 183 530 241 4206 1912 2962 1346

224 102 1666 757 333 151 576 262 595 270 686 312 754 343 754 343 1077 490 399 181 323 147 1988 903 3577 1626 369 168 437 199 573 261 6248 2840 3362 1528

280 127 2035 925 363 165 621 282 652 296 749 340 821 373 888 404 1278 581 479 218 389 177 2315 1052 4135 1880 395 180 468 213 613 279 8452 3842 3418 1554

315 143 2184 993 387 176 658 299 697 317 799 363 875 398 937 426 1362 619 530 241 431 196 2534 1152 4532 2060 419 190 495 225 648 294 9561 4346 3843 1747

lbs kg lbs kg

9.3 4.2 5.4 2.4

10.5 4.8 6.5 2.9

11.3 5.2 6.5 2.9

12.8 5.8 7.3 3.3

14.5 6.6 9.0 4.1

15.4 7.0 9.0 4.1

16.3 7.4 9.0 4.1

18.3 8.3 11.0 5.0

19.6 8.9 11.0 5.0

21.7 9.8 13.0 5.9

23.8 10.8 14.6 6.7

26.8 12.2 15.8 7.2

30.2 13.7 19.2 8.7

33.2 15.1 20.3 9.2

35.8 16.3 20.3 9.2

38.1 17.3 22.5 10.2

KW lbs kg

0.55 20 9

0.75 20 9

1.1 28 13

1.5 32 15

2.2 54 24

3 54 24

4 65 29

5.5 99 45

7.5 110 50

11 185 84

15 209 95

18.5 260 118

22 277 126

30 528 240

For sections not mentioned, please consult SKM

MAH - Series Page 19

GUIDE SPECIFICATIONS Guide Specifications

•

Interior skin of the panels shall be made of perforated galvanized steel, aluminum or stainless steel if so specified

General

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Insulation thickness shall be 1” (25mm), 1.5” (38mm) or 2” (50mm) (based on unit’s size and application).

Modular Air Handling Units (MAH) shall be factory assembled. To meet project requirements, units may consist of a wide choice of combinations of sections like fan, cooling coil, heating coil, humidifier, filter, heat recovery system, sound attenuator, multi zone, mixing box, return air fan, plenums, etc as indicated on the equipment schedule.

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Insulation density and thermal conductivity shall be 2 Ib/ft3 (32kg/m3) and 0.23 BTU.in/ft2.F.h.(0.033 W/m°k) respectively and it shall be conformed to HH-1-545B type1, SMACNA standard for duct liners and ASTM-C-423 and NFPA90A & 90B standard for fire resistance. Following optional insulations shall be provided if so specified:

Units may be shipped fully or partially assembled in accordance with jobsite requirements. Units shall be horizontal or vertical arrangements as shown on attached drawings. Units shall be installed at site as per Installation Operation & Maintenance Manual.

Casing & Construction •

MAH units casing shall be constructed of heavy-gauge steel structure frame (so called Penta-Post) with horizontal and vertical members and panels. Fixed panels shall be bolted to the frame and removal of access panels shall not affect on the structural integrity of the unit.

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1” (25mm) or 2” (50mm) thick polyisocynurate board with density in the range 2 - 3 lb/ft3 (32 - 48 kg/m3)and thermal conductivity of 0.16 BTU.in/ft 2 .F.h. (0.023 W/m°k).

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1” (25mm) or 2” (50mm) thick polyurethane foam injection board with density in the range of 2-3 lb/ft 3 and thermal conductivity of 0.16 BTU.in/ft 2 .F.h (0.023 W/m°k).

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Units (up to size 100) shall be provided with painted steel base frame. Larger units shall be provided with painted rigid steel structure base frame.

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Units shall be constructed to permit complete dismantling & re-assembling at site.

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All ceiling suspended units shall be provided with painted rigid steel structure base frame.

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Units casing shall be in galvanized or painted finish as indicated on the equipment schedule.

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Units for outdoor installation shall be provided with weatherproof top cover.

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Galvanized casing shall be made of hot-dip galvanized steel sheets.

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Painted casing shall be made of hot-dip galvanized steel sheets. Fabricated steel shall be thoroughly de-greased and then phosphatized before application of an average 60 micron baked electrostatic polyester dry powder coating in RAL 7032 color scheme. This finish can pass 1000-hour, 5% salt spray test at 95°F (35°C) and 95% relative humidity (ASTM B 117/ 95).

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Units casing shall be made of stainless steel or aluminum if so specified.

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All access panels shall be provided with quick release fasteners and handles.

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In addition to quick release fasteners and handles, all access panels shall be provided with hinges if so specified.

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To ensure air tightness and to avoid thermal bridges, all panels shall be provided with closed-cell foam gaskets.

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All panels and frames shall be internally insulated.

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To prevent insulation erosion into air stream, the unit shall be provided with double wall panels “Double Skin”, if so specified. Interior skin of the panels shall be made of hot dip galvanized steel.

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Fan Section •

Fan shall be double width, double inlet, multi blades, and centrifugal type wheels.

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Fan shall be statically & dynamically balanced and tested in a registered laboratory in accordance with AMCA standard 210.

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Fan blades shall be forward curved or backward inclined or backward inclined air foil as indicated on the equipment schedule

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Forward curved blades shall be made of galvanized steel. Fan shaft shall be made of C-45 carbon steel with an anti corrosion varnish.

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Backward inclined blades shall be made of mild steel finished with epoxy paint. Fan shaft shall be made of C-45 carbon steel with an anti corrosion varnish.

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Backward inclined airfoil blades shall be made of corrosion resistance steel coated with an anti corrosion primer and a final layer of synthetic paint. Fan shaft shall be made of hardened steel, precision ground and polished with protection paint.

MAH - Series Page 20

GUIDE SPECIFICATIONS •

Fan impeller shall be keyed to fan shaft to prevent slipping.

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Fan bearings shall be ball type, hermetically sealed, selfaligning with eccentric ring for clamping to the shaft. Fan shaft shall be stainless steel if so specified.

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Flexible connection shall be provided between fan discharge and casing panel.

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Fan motor shall be mounted inside fan section on adjustable base. Motor shall be totally enclosed fan cooled (TEFC), foot mounted, 4 poles, IP-55 protected with class-F insulation.

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Motor size and electrical characteristics shall be as indicated on the equipment schedule.

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To limit transmission of noise and vibration, the complete fan motor subassembly shall be mounted on rubber in shear isolators.

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The complete fan motor subassembly shall be mounted on 1” (25mm) deflection spring isolators if so specified.

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Stand by motor with manual change over, spark proof fan, explosion proof motor, fan with polygly coating, belt guard shall be provided if so specified.

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Fan shall be belt-driven by using anti static belts and adjustable pitch drives.

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For variable air volume controls, fan with inlet guide vanes or variable frequency drive shall be installed as indicated on the equipment schedule.

tubes to fins. Fins shall have drawn collars. •

Optional copper fins, electro-tinned coils or coils with protective coating shall be provided if specified.

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Maximum fins spacing shall be 12 fpi (2.1mm).

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Coil shall be assembled in slide-in guides for easy removal.

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Coil connections shall be sweat type. Optional MPT, FPT or flanged connections shall be provided if so specified.

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Coil shall be rated in accordance with ARI - 410 and tested by compressed air under water to the pressure of 300 psig (21.09kg/cm2).

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Cooling coil shall be provided with drain pan to remove the condensate formed during the dehumidification. Drain pan shall be constructed of 1.5 mm (for models 12-200) or 2.0 mm (for models 250-450) thick zinc coated steel sheets, painted and insulated from outside with minimum1” (25mm) thick fiberglass insulation. To meet the requirement of ASHRAE Standard 62, the bottom of drain pan shall be tapered sloping towards the center and its connection shall be MPT (schedule 40 MS pipe).

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Drain pan shall be provided with one connection (for models 12 - 200) or two connections (for models 250 - 450).

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Drain pan shall be constructed of stainless steel if so specified.

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Drain pan shall be constructed such that coil headers & Ubends are enclosed by it.

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Moisture eliminator shall be provided if so indicated on the equipment schedule.

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Eliminator blades shall be made of PVC with specially designed shape to trap water droplets.

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Eliminator blades shall be made of stainless steel if so specified.

Coil Section •

Chilled water, hot water, steam & DX coils shall be provided as indicated on the equipment schedule.

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Coil shall be constructed of seamless copper tubes of 3/8” (9.5mm) (for models 12-62) or 5/8” (15.9mm) (for models 80 - 450) outside diameter arranged in a staggered form.

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All water coils shall be provided with automatic air vents and drain plugs.

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DX coil shall be provided with distributor. Expansion valve shall be provided if so specified.

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Coil circuiting shall be counter flow. (Direction of coil water / refrigerant flow shall be counter to direction of unit airflow).

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Supply and return water connections of coil section shall be labeled with “WATER IN” & “WATER OUT” respectively. DX coil section shall be labeled with “LIQUID” & “SUCTION”.

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Coil connections shall be sealed against unit panels by flexible closed cell gasket.

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Coil tubes shall be mechanically expanded into continuous corrugated aluminum fins to provide compression bond of

Filter Section •

Filter type & efficiency shall be as indicated on the equipment schedule.

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Filter section of MAH shall be constructed to accommodate one or more of the following filters : • Panel Filter :

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Thickness : 2” - 4” (50mm - 100mm) Media : Washable Aluminum Form : Flat Average dust arrestance based on ASHRAE test # 52/76 : 75 % Thickness : 2” (50mm) Media : Disposable Synthetic Form : Flat Average dust arrestance based

GUIDE SPECIFICATIONS on ASHRAE test # 52/76 : 87 % Thickness : 2” (50mm) Media : Blend of non woven cotton and polyster Form : Pleated Average dust arrestance based on ASHRAE test # 52/76 : 93 %

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Control panel for remote installation shall be provided if so specified.

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Humidification capacity and efficiency shall be as indicated on the equipment schedule.

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Thickness : 2” (50mm) Media : Washable Synthetic Form : Pleated Average dust arrestance based on ASHRAE test #52/76 : 94 %

The humidifier type shall be steam or water as specified on the equipment schedule.

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Steam humidifier section shall be complete with drain pan and steam distribution pipe. The steam generator with its accessories shall be installed on the external wall of the unit or supplied loose for remote installation to the unit.

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V Filters : Filters shall be arranged in a V bank to increase the filtration area. Media options are the same as in flat form panel filters.

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Water humidifier section shall be consisting of water tank, pump, spray nozzles, heat exchanger media, control valves and water droplet eliminator.

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Bag Filters : Bag filter media shall be 22” (559mm), 30” (762mm) or 36” (914mm) deep with average dust spot efficiency (opacimetric measure) 85% or 95% as per ASHRAE test # 52/76.

To control the fresh, return and exhaust airflow rates in mixing box, exhaust box, economizer, face & bypass and multi-zone sections, MAH units shall be provided with dampers.

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Damper shall be arranged in parallel or opposed blades configuration.

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Auto roll & sand inertia filters shall be provided if so specified.

Damper frame, shaft, linkages and brackets shall be constructed of galvanized steel.

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To monitor air pressure drop across filter, manometers shall be provided if so specified.

Damper blades shall be constructed of galvanized steel or aluminum in airfoil design.

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Damper blades shall be constructed of stainless steel if so specified.

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Damper blades shall be rotate in bronze bearings which lubrication is not required.

4” (100mm) thick extended surface Mini - Pleat filters with equivalent efficiency to bag filter shall be provided if so specified.

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HEPA Filters : Ultra high absolute HEPA filter media shall be 12” (300mm) deep with efficiency >99% when measured by using DOP method.

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Dampers •

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Electric Heater section •

Electric heater capacity and steps shall be as indicated on the equipment schedule.

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Electric heater element shall be constructed from 80/20 nickel chrome resistance wire, which is connected to terminal pins and centered in stainless steel grade 304L sheath metal tubes by compressed magnesium oxide. The terminal pins shall be insulated from metal tube by ceramic bushes. Helical fins mild steel galvanized shall be tightly wounded around tabular heater elements. Helical fins stainless steel shall be provided if so specified.

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Control panel consisting of all controls shall be provided as integral part of the unit.

Humidifier Section

Thickness : 2” (50mm) Media : Washable Synthetic Form : Flat Average dust arrestance based on ASHRAE test # 52/76 : 93 %

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Electric heater batteries shall be supplied with primary and secondary manual safety cutouts.

Sound Attenuator Section •

Sound attenuator section shall be sized to meet the sound level indicated on the equipment schedule.

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Sound attenuator section shall be consisting of splitters with 24” (600mm) or 48” (1200mm) in lengths.

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Outer skin of the splitters shall be constructed of perforated galvanized steel.

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Outer skin of the splitters shall be constructed of perforated aluminum or stainless steel if so specified.

Electric heater batteries shall be supplied with contactors, fuses, disconnect switch and airflow switch if so specified.

MAH - Series Page 22

GUIDE SPECIFICATIONS •

will be improved.

The insulation material of splitters shall be fiberglass.

Heat Recovery Section To conserve the energy consumption, one of the following heat recovery systems shall be provided: •

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Rotary heat recovery system (Thermal wheel): Sensible & latent heats can be recovered and Indoor Air Quality (IAQ) will be improved by maintaining the humidity. Over 85 % energy recovery can be achieved. The wheel matrix shall be constructed of pure aluminum foil. The wheel shall be rotate in a relatively low speed (15–25 RPM). The wheel rotor shall be supported by two pillow block bearings to maintain / replace without actual removal of the rotor from its casing. Run around coil system: This system consists of two coils, pump and interconnecting piping. It recovers sensible heat only and it can reduce the differential in temperature between supply and exhaust air by as much as 60 %.

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Fixed plate heat recovery system (Plate heat exchanger): It shall be built from aluminum plates or stainless steel if so specified. It recovers sensible heat only and its efficiency is up to 70 %.

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Heat pipe system: This system shall be installed in which one side to be replaced in the warm return air and the other side in the cold supply air. By using this system, in addition to significant energy savings, the dehumidification capacity will be increased, the cooling load on the evaporator and compressor will be decreased and Indoor Air Quality (IAQ)

MAH - Series Page 23