Dunham-Bush CS3 Series Instruction manual

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TABLE OF CONTENTS
SECTION PAGE
NOMENCLATURE................................................................................................................................ 3
INTRODUCTION
RECEIVING.......................................................................................................................................................... 4
STORAGE............................................................................................................................................................ 4
LONG-TERM STORAGE...................................................................................................................................... 4
HANDLING AND RIGGING.................................................................................................................................. 5
INSTALLATION
GENERAL............................................................................................................................................................. 6
FAN SYSTEM....................................................................................................................................................... 7
LEVELING FAN DECK ASSEMBLY..................................................................................................................... 7
CLEARANCE........................................................................................................................................................ 7
GENERAL PIPING PARAMETERS- HOT WATER COILS......................................................................... 8
STEAM COILS.................................................................................. 9
DIRECT EXPANSION COILS..........................................................10
SHEAVES AND BELTS.......................................................................................................................................11
BELT TENSION INSPECTION GUIDE................................................................................................................12
CONDENSATE DRAIN TRAPS...........................................................................................................................13
DUCT CONNECTIONS .......................................................................................................................................13
JUNCTION BOX CONDENSATE PREVENTION................................................................................................14
PHYSICAL DIMENSION......................................................................................................................................15
UNIT SHIPPING WEIGHTS (KG)........................................................................................................................17
DISCHARGE ARRANGEMENTS ........................................................................................................................18
WATER INLET AND OUTLET LOCATIONS .......................................................................................................19
FILTER ARRANGEMENTS.................................................................................................................................21
COMPONENTS ARRANGEMENT
BLOWER ARRANGEMENT ................................................................................................................................24
QUICK SERVICE ACCESS.................................................................................................................................24
FILTERS..............................................................................................................................................................24
COILS..................................................................................................................................................................24
FANS...................................................................................................................................................................25
MOTOR LOCATION............................................................................................................................................25
OPTIONAL...........................................................................................................................................................25
UNIT FEATURES AND ACCESSORIES
UNIT ASSEMBLY PLANNING.............................................................................................................................26
TYPICAL ARRANGEMENT.................................................................................................................................26
FAN BEARINGS..................................................................................................................................................27
VIBRATION ISOLATION .....................................................................................................................................27
OPERATION
PRE-OPERATION CHECK..................................................................................................................................28
PRESSURE DROPS ...........................................................................................................................................28
OPERATING LIMITATION...........................................................................................................................29
MAINTENANCE
PERIODIC INSPECTION.....................................................................................................................................30
ANNUAL INSPECTION .......................................................................................................................................31
TROUBLESHOOTING CHART.................................................................................................................32

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NOMENCLATURE
Each unit nameplate will carry the unit model designation.
The following gives a sample nomenclature of Dunham-Bush air-handlers
AHD FS 100 HL
MODULAR DESIGN
AHD= Air Handler Double
Skinned
FS= Forward Curved Wheel
AF= Air Foil Wheel
BF= Backward Curved
Unit Size = Nominal CFM
100
L= Low Pressure Unit Up
To 3.5” TSP
M= Medium Pressure Unit
Over 3.5” TSP
H= Horizontal
V= Vertical
M= Multi Zone

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INTRODUCTION
RECEIVING
All units leaving Dunham-Bush factory have been thoroughly checked to ensure the shipment of
quality products. We guarantee that all air-handlers are properly packaged.
Cautions: Dunham-Bush Industries Sdn Bhd will not be responsible for any damages or loss parts in
shipment or at the job site. Report any shipping damage to nearest Dunham-Bush office
immediately.
Carefully inspect all shipments immediately after delivery. When damage is evident, note this fact on
the carrier's freight bill and request that the carrier send a representative to inspect the damage.
This may be done by telephone or in person, but should always be confirmed in writing.
The shipment should be unpacked in the presence of the agent so that the extent of damage or loss
can be determined. The carrier's agent will make an inspection report and a copy will be given to the
consignee for forwarding to the carrier with a formal claim. Do not report missing items until you
have thoroughly checked the units because bolts, belts or other small item's might be packed inside
the units.
STORAGE
If equipment is stored out-of-doors, special care should be taken to protect against moisture,
corrosion and dust. Wheels should be covered to prevent unintended location by wind. Equipment,
when stored under such conditions, must be periodically inspected to stop trouble from developing.
LONG-TERM STORAGE
If storing unit before installation, observe the following precautions,
1. The storage site should be level, rigid, and free of debris. If the site is in a heavy rain area, set
the unit off of the ground.
2. Do not store the unit in a heavy traffic area or on a vibrating surface. Vibration can damage
stationary bearings.
3. Monthly move the coverall, enter the fan section through the access door, and slowly rotate the
fan and motor by hand. This operation prevents bearing corrosion by redistributing the bearing
grease.
4. On no occasion should anything be stacked on top of the units. The elapsed time for the
warranty prevails even though the units are in storage.

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Suitable extension should be used in case when
fork of the forklift is too short
The maximum permissible load is restricted by
the lifting capacity of the slings
INTRODUCTION
HANDLING AND RIGGING
Proper handling and rigging procedure should be exercised to prevent damages. Some units are
completely assembled and should be handled carefully to avoid dropping or jarring. Others are
shipped in a few sections or completely knock-down. Care is required in handling the individual
parts. Fan wheels, casings, coils that are furnished with extra protective coatings must be handled
with extreme care, as an injury to the coating can result in a break of continuity and this will destroy
permanently the value of the protective covering for the metal. Any such rupture of coating, due to
mishandling, is not covered by the guarantee.
Air handling units are shipped on strong plastic package or crate with sections bolted as determined
by lorries or trailer size limitations. When lifting with slings, use spreader bars across the top of the
units to avoid damaging panel or framework. Caution must be exercised to avoid damages to any
sections. Check the weight of the units before rigging. Try to place the rigging cable such that the
weight is evenly distributed.
Lifting cables should not be attached to the extremities of the accessory sections without
intermediate support at the basic units. The feet on the accessory section are provided for isolator
mounting and not designed for rigging connections and must not be abused.
All fan outlets are covered with cardboard. Remove it just prior to when the duct is connected to the
unit.
Figure 1: Typical Rigging

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INSTALLATION
GENERAL
If your inspection indicates that the unit is ready for installation, move it to the desired location.
Evaluate the job site by considering the following points:
( l.) Is the floor or foundation level enough to support the weight of the unit (the minimum
foundation shall be 4 times the rotating mass of the fan and drives or about double of the units
weight). Refer to table 1 to 5 for weight and dimensions.
( 2.) Is there sufficient space for making piping, drainings and wiring connections, and this space
accessible.
( 3.) Is there adequate space for servicing the unit, and for removing or opening the access doors. A
minimum clearance equal to the width of the units must be provided on one side of the unit for
removing the coil, shaft and wheel.
( 4.) How ductwork is to be done and is there enough space for ducting.
In extreme cases when it is necessary to completely isolate any vibration from the air-conditioner
which can adversely affect any other nearby equipment, it is recommended that either one of the
following methods be followed:
( 1.) Provide a separate floating plinth.
( 2.) Place the unit on a minimum 2.5" thick cork sheet.
( 3.) Support the complete unit on spring isolators. Request factory to provide correct spring
isolators and mounting brackets at base units.
For stringent quiet and vibration-free application, a good acoustical and vibration engineering
practice has to be applied.
Ideally, a heavy concrete slab should be used for floor mounted units, and main support beams for
ceiling hung units. Long floor or ceiling spans should be avoided.

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INSTALLATION
Fan System
The fan section needs to be checked
carefully before the unit is turned on.
After removing all transportation
protections (only in case when spring
shock absorbers are installed) one
should check if there are any objects
near the fan, which could be sucked
into the impeller after it is turned on.
See Figure 2.
Figure 2
LEVELING FAN DECK ASSEMBLY
After installation, check the fan deck to ensure
that it is level with the foundation. The level
may be corrected by loosening the cap screw
(see Figure 3). To raise the level, turn the
adjusting screw anti-clockwise; to lower, turn
the screw clockwise. When the correct level is
achieved, firmly tighten the cap screw.
CLEARANCE
Clearance must be provided for
( a.) Supply and return ductwork
( b.) Chilled water piping connection
( c.) Electrical power and control wiring
( d.) Trapped condensate drain connection
( e.) Routine services like filter and lubrication
( f.) Coil removal
Figure 3: Spring Floor Mount
Curb mounted and weather-proof units can be provided upon request.

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PLUG COCK
GAGE COCK
THERMOMETER
DIRTLEG WITH GATE
VALVE (7/8"OD MIN.)
GATE
VALVE
PROPORTIONAL REMOTE
BULB TEMP. CONTROL
3 WAY MIXING
VALVE
AIR VENT
AIR FLOW
SUPPLY
RETURN
INSTALLATION
GENERAL PIPING PARAMETERS - HOT WATER COILS
The following precautions should be noted with regard to the piping layout for hot water coils:
( 1.) All coils should be connected to provide adequate venting and drainage.
( 2.) Thermometers are recommended to provide temperature readings when coils are balanced.
( 3.) a. Plug cocks are used to manually adjust the water flow for a set pressure drop through the
coil.
b. The pressure drop is determined by connecting pressure gauges to the gauge cocks
( 4.) The leaving air temperature from the coil (in this piping layout) is maintained by automatically
proportioning the amount of water flowing through the coil or through the by-pass. The water
flow is regulated by a motorised 3 way mixing valve, controlled through a proportional remote
bulb temperature controller.
( 5.) A gate valve and hose connection provided in the supply line dirt leg should be supplied when
floor drains are remote in relation to the coil location.
( 6.) Water piping and coil section should be supported independently.
Figure 4: Hot Water Coil Piping Layout

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INSTALLATION
GENERAL PIPING PARAMETERS -STEAM COILS
(MEDIUM OR HIGH PRESSURE SYSTEM)
The following precautions should be noted with regard to the piping layout for steam coils:
( 1.) Return piping from coil to trap should be of at least the same size as the coil outlet connection.
( 2.) Steam piping and coil section should be supported independently.
( 3.) The sizing of control valves should be based on the steam load and not on the coil supply
connection size.
( 4.) Thermostatic traps should be used for venting only.
( 5.) A strainer should be provided on the steam supply side of the control valve.
( 6.) Locate traps at least 12 inches below the coil return connection.
( 7.) Where handling outside air below 35°F the following precautions must be followed:
a. Proper draining is mandatory to avoid damage by freezing.
b. Do not use overhead returns from coils.
c. An immersion thermostat should be used to protect the coil. The device controls the
outdoor air damper and fan motor when the steam supply fails or condensate temperature
drops below a pre-set level. Thermostat is located in the return line before the dirt leg.
Figure 5: Steam Coil Piping Layout

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INSTALLATION
GENERAL PIPING PARAMETERS- DIRECT EXPANSION COILS
Each coil must be installed with the suction header on the entering air face of the coil and with the
suction connection at the lower end. The orientation of the refrigerant distributor is not critical but the
distributor tubes must not be kinked or bent in a non-uniform configuration. Refer to, Figure 6.
An individual expansion device must be provided for each coil or each section of coil which contains
a header suction connection. If the air flow through two or more coils is in parallel, as in a stacked
coil bank, the suction piping must be installed in such a way that liquid from one coil suction header
cannot reach another coil suction header. The bulb for the control valve must be attached to the
header of the coil or section of coil fed by that valve and not to a common header.
When two or more coils are
connected to a common suction line,
never place the bulb on the common
line.
Thermostatic expansion valves are
to be equipped with external
equalizer tubes that are field
connected to the suction line. The
valve should be sized in accordance
with the manufacturers
recommendations, allowing
approximately 35 psi pressure drop
through the coil and distributor at full
load. Do not oversize the valve.
Follow the valve manufacturer's
instructions on the location of the
thermostatic bulb. Proper expansion
valve operation is necessary in order
to realize the rated coil capacity.
Figure 6: DX Coil Piping Arrangement
When a DX type coil is operated with a suction temperature below 32°F, a build up of frost will occur
on the finned surface. It is, therefore, not recommended to operate DX coils for air conditioning
purposes at below freezing suction temperatures. If the full load operating point for the coil is
selected at a "safe" temperature, a system analysis is required to check for the lowest probable
suction temperature at light load conditions. Suction pressure controlled hot gas bypass valves are
available from various control manufacturers to maintain an adequate minimum suction
temperature.

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INSTALLATION
SHEAVES ALIGNMENT
Factory-supplied drives are pre-aligned and tensioned. However, it is recommended that you check
the belt tension and alignment before starting the unit. Always check the drive alignment after
adjusting belt tension. To install sheaves on the fan or motor shaft, remove any rust-preventive
coating on the shaft. Make sure the shaft is clean and free of burrs. Add grease or lubricant to bore
of sheave before installing. Mount sheave on the shaft. To prevent bearing damage do not use
excessive force. Place sheaves for minimum overhang. Each factory-assembled fan, shaft and drive
sheave assembly is precision aligned and balanced. If excessive unit vibration occurs after field
replacement of sheaves, the unit should be rebalanced. To change the drive ratio, reselect and
replace the motor sheave, not the fan sheave.
Make sure that fan shafts and motor shafts are parallel and level. The most common causes of
misalignment are nonparallel shafts and improperly located sheaves. Where shafts are not parallel,
belts on one side are drawn tighter and pull more than their share of the load. As a result, these
belts wear out faster, requiring the entire set to be replaced before it has given maximum service. If
misalignment is in the sheave, belts enter and leave the grooves at an angle, causing excessive belt
and sheave wear.
1. Shaft alignment can be checked by measuring the distance between the shafts at 3 or more
locations. If the distances are equal, then the shafts are parallel.
2. Sheave alignment:
•Fixed sheaves:To check the location of the fixed sheaves on the shaft, a straightedge or a
piece of string can be used. If the sheaves are properly aligned, the string will touch them at
the points indicated by the arrows in Figure 5.
•Adjustable sheaves: To check the location of adjustable sheave on shaft, make sure that the
centerlines of both sheaves are in line and parallel with the bearing support channel. See
Figure 5. Adjustable pitch drives are installed on the motor shaft.
3. Rotate each sheave a half revolution to determine whether the sheave is wobby or the drive
shaft is bent. Correct any misalignment.
4. With sheaves aligned, tighten cap screws evenly
and progressively.
5. With taper-lock bushed hubs, be sure the bushing
bolts are tightened evenly to prevent side-to-side
pulley wobble. Check by rotating sheaves and
rechecking sheave alignment. When substituting
field-supplied sheaves for factory-supplied
sheaves, consider that fan shaft sheaves has
been factory balanced with fan and shaft as an
assembly. For this reason, substitution of motor
sheave is preferable for final speed adjustment.
FIGURE 7: Sheave alignment

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INSTALLATION
BELT TENSION INSPECTION GUIDE
When installing or replacing belts, always use a complete set of new belts. Mixing old and new belts
will result in the premature wear or breakage of the newer belts.
Correct tensioning of V-belts drive is carried out as follows,
1. Fit the belts into the grooves and increase the centre distance until the belts are snug.
(Note: Never lever belts over sheaves)
2. Tighten belts and equalize belt slack so that it is on the same side of belt for all belts. Failure to
do so may result in uneven belt stretching.
3. As shown in Figure 8, measure the span length (mm) of the drive. Determine the deflection at
the centre of the span according to the table below.
Belt Span (mm) Deflection (mm)
250-300
310-360
370-420
4
5
6
430-480
490-540
550-600
7
8
9
610-660
670-720
730-780
10
11
12
790-840
850-900
910-960
13
14
15
970-1020
1030-1080
1090-1140
16
17
18
4. From table below, find the appropriate deflection force according to belt type. The deflection
force for any V-belt should be within the minimum and maximum force shown in the table. When
the tension drops to the minimum value, readjust to the maximum value.
Deflection Force (Kg)
Belt Type SPZ SPA SPB SPC
Diam. Of smaller
sheave (mm) Min. Max Min. Max Min. Max Min. Max
63-80 1.2 1.9 - - - - - -
90-112 1.6 2.4 1.9 2.9 - - - -
125-160 1.9 2.8 2.6 4.0 3.3 5.0 - -
180-224 1.9 2.9 3.0 4.6 4.3 6.4 5.8 8.7
250-355 - - 3.2 4.8 5.1 7.7 7.9 11.9
400-630 - - - - 5.5 8.2 10.3 15.4
Note: A new drive should be tensioned to the higher value. After the drive has been running for 30 minutes, the tension
should be checked and readjusted to higher value.
FIGURE 8

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INSTALLATION
CONDENSATE DRAIN TRAPS
The condensate drain trap piping must be properly designed to insure the removal of condensate
(See Figure 9).
FIGURE 9: TYPICAL CONDENSATE PIPING
a.) Condensate Drain – Draw-through units
b.) Condensate Drain – Blow-through units
DUCT CONNECTIONS
All intake and discharge air duct connections to the unit should be made with flexible material. The
accessory flexible connectors may be used for this purpose. The flexible material should be installed
so that it is sufficiently loose to prevent the transmission of vibration to the ductwork. Duct turns and
transitions must be made carefully to hold the friction loss to a very minimum. Avoid short turns and
duct elbows should contain splitters or turning vanes.
Ductwork which is connected to the fan discharge should run in a straight line at least 1½ fan
diameters and should not be reduced in cross sectional area (See Figure 10). Figure 10 shows the
recommended air discharge arrangement for an air duct turn made close to the unit. Notice that a
duct should be in same direction as the fan rotation. Never deadhead the discharge into the flat side
of a plenum.
The air duct should never be unprotected to the elements when outside air is drawn into a unit. A
hood or louvered assembly should be provided to keep rain and snow out of the unit. Also an
expanded metal screen should be provided to keep birds and other animals out. Open return air
ducts and free discharge openings should be protected with an expanded metal screen.
1. Fan Off 2. Fan Just Started 3. Condensate Beginning to
Drain Away
1. Fan Off 2. Fan Running and Condensate
Beginning to Drain Away

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INSTALLATION
FIGURE 10: RECOMMENDED DISCHARGE DUCT ARRANGEMENT WHEN TURNS
ARE REQUIRED
Note : Make Turns In The Same Direction As Fan Rotation.
FIGURE 11: DUCT CONNECTIONS
JUNCTION BOX CONDENSATE PREVENTION
When air handlers are installed outdoors in a high humidity environment or indoors where the
apparatus room is used as a fresh air plenum, precautions must be taken to prevent condensation
forming inside the junction box of the internally mounted motor.
Standard installation practice is to mount the motor starter or fused disconnect box adjacent to the
air handler and enclose the power wiring to the motor in flexible conduit.
The sheet metal housing of the disconnect switch or motor starter is not airtight. Thus, warm moist
air can migrate through the flexible conduit to the junction box on the motor. With the motor located
inside the unit, the motor temperature is that of the cool supply air; thus, condensate can form inside
the junction box and, possibly, on the live terminal lugs.
To prevent the moist air from migrating through the conduit to the motor, seal the power wires inside
the flexible conduit at the motor starter or fused disconnect (Figure 12) by using a nonconductive,
non-hardening sealant.
FIGURE 12: SEALING POWER WIRES IN FLEXIBLE CONDUIT

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L
SUPPLY
AIR
W
H1
H2
AIR
RETURN
H
CHILLED
CHILLED
WATER
WATER
OUTLET
INLET
NOTE 2
SEE
1 1/2" [38] MBSP
DRAIN
INLET
OUTLET
WATER
TOP DAMPER
HOT DECK
L
H1
H
REAR DAMPER
W
WATER
CHILLED
CHILLED
DIFFUSER
8" [203]TYP.
1 1/2"[38] MBSP
DRAIN
H2
INSTALLATION
PHYSICAL DIMENSION
1.) VERTICAL TYPE
Model 1" Casing - inch [mm] 2" Casing - inch [mm]
H W H1 H2 L H W H1 H2 L
12 60 5/8[1540] 33.1/16[840] - - 33 1/16[840] 61[1550] 33 7/16[850] - - 33 7/16[850]
22 68 1/2[1740] 48 13/16[1240] - - 33 1/16[840] 68 7/8[1750] 49 1/4[1250] - - 33 7/16[850]
32 76 3/8[1940] 48 13/16[1240] - - 33 1/16[840] 76 3/4[1950] 49 1/4[1250] - - 33 7/16[850]
40 84 1/4[2140] 56 11/16[1440] - - 33 1/16[840] 84 5/8[2150] 57 1/16[1450] - - 33 7/16[850]
48 84 1/4[2140] 64 9/16[1640] - - 40 15/16[1040] 84 5/8[2150] 65[1650] - - 41 3/8[1050]
64 85 7/8[2180] 80 5/16[2040] 40 15/16[1040] 44 7/8[1140] 40 15/16[1040] 86 5/8[2200] 80 3/4[2050] 41 3/8[1050] 45 1/4[1150] 41 3/8[1050]
80 101 1/2[2580] 80 5/16[2040] 48 13/16[1240] 52 3/4[1340] 48 13/16[1240] 102 3/8[2600] 80 3/4[2050] 49 1/4[1250] 53 1/8[1350] 49 1/4[1250]
100 109 7/16[2780] 80 5/16[2040] 48 13/16[1240] 60 5/8[1540] 48 13/16[1240] 110 1/4[2800] 80 3/4[2050] 49 1/4[1250] 61[1550] 49 1/4[1250]
120 117 5/16[2980] 80 5/16[2040] 48 13/16[1240] 68 1/2[1740] 48 13/16[1240] 118 1/8[3000] 80 3/4[2050] 49 1/4[1250] 68 7/8[1750] 49 1/4[1250]
150 133 1/16[3380] 80 5/16[2040] 56 11/16[1440] 76 3/8[1940] 56 11/16[1440] 133 7/8[3400] 80 3/4[2050] 57 1/8[1450] 76 3/4[1950] 57 1/16[1450]
180
NOT AVAILABLE
141 3/4[3600] 104 5/16[2650] 65[1650] 76 3/4[1950] 65[1650]
210 150[3800] 112 3/16[2850] 65[1650] 84 5/8[2150] 65[1650]
240 150[3800] 120 1/16[3050] 65[1650] 84 5/8[2150] 65[1650]
2.) MULTIZONE TYPE
Model 1" Casing - inch [mm] 2" Casing - inch [mm]
H W H1 H2 L H W H1 H2 L
22 52 3/4[1340] 48 13/16[1240] - - 40 15/16[1040] 53 1/8[1350] 49 1/4[1250] - - 41 3/8[1050]
32 60 5/8[1540] 48 13/16[1240] - - 40 15/16[1040] 61[1550] 49 1/4[1250] - - 41 3/8[1050]
40 60 5/8[1540] 56 11/16[1440] - - 40 15/16[1040] 61[1550] 57 1/16[1450] - - 41 3/8[1050]
48 60 5/8[1540] 64 9/16[1640] - - 40 15/16[1040] 61[1550] 65[1650] - - 41 3/8[1050]
64 60 5/8[1540] 80 5/16[2040] - - 40 15/16[1040] 61[1550] 80 11/16[2050] - - 41 3/8[1050]
80 78[1980] 80 5/16[2040] 25 3/16[640] 52 3/4[1340] 48 13/16[1240] 78 3/4[2000] 80 11/16[2050] 25 9/16[650] 53 1/2[1350] 49 3/4[1250]
100 85 7/8[2180] 80 5/16[2040] 25 3/16[640] 60 5/8[1540] 48 13/16[1240] 86 5/8[2200] 80 11/16[2050] 25 9/16[650] 61[1550] 49 3/4[1250]
120 93 11/16[2380] 80 5/16[2040] 25 3/16[640] 68 1/2[1740] 56 11/16[1440] 94 1/2[2400] 80 11/16[2050] 25 9/16[650] 68 7/8[1750] 57 1/16[1450]
150 101 9/16[2580] 80 5/16[2040] 25 3/16[640] 76 3/8[1940] 56 11/16[1440] 102 3/8[2600] 80 11/16[2050] 25 9/16[650] 76 3/4[1950] 57 1/16[1450]
180 NOT AVAILABLE 102 3/8[2600] 104 5/16[2650] 25 9/16[650] 76 3/4[1950] 57 1/16[1450]
210 110 1/4[2800] 112 3/16[2850] 25 9/16[650] 84 5/8[2150] 65[1650]
240 110 1/4[2800] 120 1/16[3050] 25 9/16[650] 84 5/8[2150] 65[1650]
Notes: 1. Horizontal type: 1” Casing – Model 12 to 240, 2” casing – Model 12 to 520
Refer to page 16, Dimensions For Accessory Sections for unit configuration and dimensions.
2. Height (H) includes the unit base.
3. Spring type isolators are for standard fan of model AF64 onwards and FS80 onwards only. The rest are rubber isolator mounting.
4. L/H motor and R/H piping shown.

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L L
H H
L D
H
DL
H
L
H
L
H
E
E
H
L
L
H
E
L
E
L
H
H
L
H
L
INSTALLATION
PHYSICAL DIMENSION
3.) DIMENSIONS FOR ACCESSORY SECTIONS
FAN MODULE COIL MODULE EXTERNAL FACE AND BYPASS MODULE DISCHARGE PLENUM MODULE
MIXING BOX MODULE ECONOMIZER MODULE ANGLE FILTER MODULE FLAT & BAG FILTER MODULE
HEPA FILTER MODULE DIFFUSER MODULE SILENCER MODULE ACCESS MODULE
Model
Unit
Height
(H)
Unit
Width
(W) Fan Coil
(Long) Coil (Short)
External
Face &
Bypass
Mixing
Box Econo- mizer
Flat &
Bag /
Angle
Filter
Hepa
Filter Diffuser Silencer Access Discharge Plenum
Damper / Discharge Plenum
Opening Size
Width (E) Length (L)
Module Module Length (M) Inch [mm]
12 4 4 4 4 3 2 2 4 3 5 2 5 3 2 8 3/4[210] 15 3/4[400]
22 4 6 4 4 3 2 2 4 3 5 2 5 3 2 8 3/4 [210] 27 9/16[700]
32 5 6 4 4 3 3 3 6 3 5 2 5 3 3 12 3/16[310] 27 9/16[700]
40 5 7 4 4 3 3 3 6 3 5 2 5 3 3 12 3/16[310] 35 7/16[900]
48 5 8 5 4 3 3 3 6 3 5 2 5 3 3 12 3/16[310] 43 5/16[1100]
64 5 10 5 4 3 3 3 6 3 5 2 5 3 3 12 3/16[310] 55 1/8[1400]
80 6 10 6 4 3 3 3 6 3 5 3 5 3 3 16 1/8[410] 55 1/8[1400]
100 7 10 6 4 3 4 4 8 3 5 3 5 3 4 20[510] 55 1/8[1400]
120 8 10 6 4 3 4 4 8 3 5 4 5 3 4 20[510] 63[1600]
150 9 10 7 4 3 4 4 8 3 5 4 5 3 4 24[610] 63[1600]
180 9 13 8 4 3 5 5 10 3 5 4 5 3 5 24[710] 63[1600]
210 10 14 8 4 3 5 5 10 3 5 5 5 3 5 24[710] 70 7/8[1800]
240 10 15 8 4 3 5 5 10 3 5 5 5 3 5 24[710] 78 3/4[2000]
270 10 17 8 4 3 5 5 10 3 5 5 5 3 5 31 7/8[810] 78 3/4[2000]
320 11 18 9 4 3 6 6 6 + 6 3 5 5 5 3 6 35 13/16[910] 78 3/4[2000]
420 11 20 10 4 3 7 7 7 + 7 3 5 5 5 3 7 43 11/16[1110] 90 9/16[2300]
520 11 21 10 6 5 8 8 8 + 8 3 5 5 5 3 8 51 9/16[1310] 90 9/16[2300]
Notes: 1.) To calculate actual unit height, 1 Module = 7 7/8” [200mm]
Unit base = 4” [100mm]
eg. 1" Casing For Model 12 , Unit Height (H) = (4 x 7 7/8”[200mm]) + 1 1/2”[40mm] + 4”[100mm] = 37”[940mm] (includes unit base)
For Model 210, Unit Height (H) = (10 x 7 7/8”[200mm]) + 1 1/2”[40mm] + 4”[100mm] = 84 1/4”[2140mm] (includes unit base)
eg. 2" Casing For Model 12, Unit Height (H) = (4 x 7 7/8”[200mm]) + 2”[50mm] + 4”[100mm] = 37 1/2”[950mm] (includes unit base)
For Model 210, Unit Height (H) = (10 x 7 7/8”[200mm]) + 2”[50mm] + 4”[100mm] = 84 5/8” [2150mm] (includes unit base)
2.) To calculate actual unit width and length, 1 Module = 7 7/8” [200mm]
1" Casing, For all Models, Unit Width (W) = (4 x 7 7/8”[200mm]) + 1 1/2”[40mm] = 33”[840mm]
2" Casing, For all Models, Unit Width (W) = (4 x 7 7/8”[200mm]) + 2”[50mm] = 33 1/2”[850mm]
3.) Maximum shipping length, if, Unit Width <= 10M, Lmax = 15M
Unit Width > 10M, Lmax = 10M

- 17 -
INSTALLATION
UNIT SHIPPING WEIGHTS (KG)
Sections
Model
Fan
Section
(Horizontal
without
Fan)
Coil
Section
(Short
without
Coil)
Coil
Section
(Long
without
Coil)
Diffuser
Section
External
Face &
Bypass
Section
(with
Dampers,
without
Duct)
Flat &
Bag
Filter
Section
(without
Media)
Hepa
Filter
Section
(without
Media)
Angle
Filter
Section
(without
Media)
Mixing
Box
Section
(with
Dampers)
Economizer
Section
(with
Dampers)
Access
Section
Silencer
Section
(with
Splitters)
V
ertical
(without
Fan &
Coil)
Multizone
(without
Coil)
12 76 64 79 35 49 46 68 46 49 65 46 70 132 -
22 93 80 99 44 63 57 84 57 63 82 57 88 175 149
32 102 84 104 46 86 60 91 60 86 123 60 95 184 158
40 110 92 113 52 97 67 98 67 97 136 67 102 211 172
48 144 100 124 57 108 72 106 72 108 147 72 111 265 191
64 174 127 154 73 138 94 135 94 138 187 94 142 324 231
80 215 131 160 98 153 98 142 98 153 200 98 150 401 290
100 228 134 165 101 188 101 148 101 188 258 101 158 413 301
120 243 138 170 130 205 105 154 105 205 278 105 166 427 342
150 285 143 175 135 221 110 161 110 221 296 110 174 509 354
180 375 172 209 159 298 131 190 131 298 403 131 207 (740) (468)
210 457 230 276 244 376 181 252 181 376 503 182 265 (858) (654)
240 476 242 287 255 396 191 263 191 396 523 191 285 (893) (682)
270 523 267 316 287 437 210 289 210 437 566 211 313 - -
320 609 283 336 304 519 224 307 224 519 789 225 336 - -
420 711 305 361 325 619 241 327 241 619 957 241 360 - -
520 748 430 487 335 693 249 337 249 693 1087 249 371 - -
Notes: 1.) Add 10% for 2" Casing
2.) Weight in ( ) of Model 180, 210 and 240 are for 2" Casing.
Accessories
Model
Fan
(Forward
Curved,
Class 1)
Fan
(Forward
Curved,
Class 2)
Fan
(Airfoil
Curved,
Class 1)
Fan
(Airfoil
Curved,
Class 2)
Pre Filter
(2", Flat) Pre Filter (2", Angle) Secondary Filter (4")
Secondary
Filter
(15" Bag)
Secondary
Filter
(22" Bag)
Secondary
Filter
(12" Catridge)
Hepa
Filter Eliminator
Internal
Face &
Bypass
Dampers
12 11 - 16 22 2.1 2.4 0.7 1.8 2.0 6.0 17 7 6
22 13 - 23 29 3.5 4.1 1.2 3.4 3.8 10.0 25 10 9
32 21 - 29 39 4.1 7.0 1.4 3.6 4.0 12.0 25 13 12
40 27 - 36 48 4.7 8.2 1.5 4.6 5.2 14.4 33 15 14
48 27 - 50 62 6.2 10.5 2.0 5.4 6.0 18.0 33 18 16
64 32 - 58 79 7.1 12.3 2.3 6.9 7.8 21.6 50 22 23
80 50 - 78 103 10.3 14.1 3.5 10.8 12.0 32.1 76 26 28
100 63 73 101 137 12.3 18.5 4.1 10.8 12.0 36.0 99 31 33
120 90 97 101 137 14.1 21.2 4.5 13.8 15.6 43.2 99 34 39
150 115 132 140 187 18.5 24.6 6.1 16.2 18.0 54.0 125 39 42
180 115 132 183 238 24.6 32.8 8.2 21.6 24.0 72.0 167 49 51
210 132 168 183 238 25.8 37.6 8.4 23.6 26.4 76.8 198 69 60
240 132 168 244 295 30.5 44.6 10.1 28.1 31.4 89.6 198 77 66
270 165 230 244 295 32.3 47.0 10.6 29.5 33.0 96.0 248 85 72
320 288 329 353 378 38.5 51.3 12.5 38.4 43.2 118.5 274 100 90
420 - - 439 470 46.3 61.3 15.5 41.7 46.2 136.5 297 112 99
520 - - 534 575 49.2 70.0 16.3 43.2 48.0 144.0 323 116 102
Coil
Model Type A Coil (@12 FPI) Type 5 Coil (@12 FPI)
3
Rows 4 Rows 5 Rows 6 Rows 8 Rows 3 Rows 4 Rows 5 Rows 6 Rows 8 Rows
12 18 20 24 26 31 20 25 29 33 41
22 28 32 38 43 53 35 42 50 58 74
32 33 39 47 53 66 43 53 63 73 94
40 40 47 57 64 81 52 65 77 90 115
48 46 55 66 75 95 60 75 90 105 136
64 55 67 81 93 118 77 97 116 136 175
80 65 80 97 110 142 92 116 140 164 211
100 75 92 112 129 166 110 138 167 196 253
120 90 110 135 156 202 130 165 200 234 304
150 107 133 163 189 245 167 212 257 302 392
180 139 170 207 238 306 192 245 298 351 457
210 170 191 252 311 341 232 278 328 415 551
240 180 220 270 328 401 255 324 393 462 601
270 203 250 307 355 459 295 377 458 540 702
320 233 288 354 408 529 338 432 526 620 809
420 270 335 412 478 620 394 505 615 726 949
520 310 387 477 555 723 462 594 726 858 1122
Notes: For other fin series: "8FPI x 0.85", "10FPI x 0.92", "14FPI x 1.08".
Motor
Motor HP & Drive Weight, kg
1 18
1.5 21
2 26
3 35
4 40
5 47
5.5 47
7.5 69
10 85
15 127
20 145
25 189
30 226
40 306
50 360
60 386
75 523
100 605

- 18 -
S3
R
S4
R
S4
S1
Q
S1
AIR
OUTOUT
AIR
AIR
OUTOUT
AIR
IN
AIR
IN
AIR
IN
AIR
P2
P1
R
R
P1 QP2
P2
P1 Q
P2
Q
P1
IN
AIR
AIR
OUT
IN
AIR
OUT
AIR
P2
Q
P1
R
P2
Q
P1
S1 R
P2
Q
P1
S2
IN
AIR
OUT
AIR
R
AIR
OUT
IN
AIR
P2
Q
P1
S1
R
AIR
IN
OUT
AIR
P2
Q
P1
S1 R
IN
AIR
OUT
AIR
S3
R
P1 QP2
INSTALLATION
DISCHARGE ARRANGEMENTS
A.) FAN SECTION ONLY
Horizontal Front Top Inverted Top
B.) SINGLE ZONE HORIZONTAL TYPE
Horizontal Front Top Inverted Top
C.) SINGLE ZONE VERTICAL TYPE
Horizontal Front Horizontal Rear Top Inverted Top
1" Casing
Model Forward Curved Blower Backward Inclined Airfoil Blower
P1 P2 Q R S1 S2 S3 S4
Max. Motor
Frame Size P1 P2 Q R S1 S2 S3 S4
Max. Motor
Frame Size
12 170 435 235 265 110 465 385 90 D90L 145 435 260 260 110 470 360 120 D100L
22 430 545 265 290 110 440 415 235 D100L 370 545 325 325 110 405 385 230 D112
32 385 545 310 345 110 385 440 155 D100L 335 545 360 360 110 370 405 175 D112
40 420 645 375 405 110 325 465 270 D112M 390 645 405 405 110 325 420 315 D112M
48 520 745 375 405 110 525 465 270 D132S 440 745 455 455 110 475 450 235 D132M
64 665 905 470 405 110 525 465 270 D132M 625 905 510 510 155 375 500 110 D132M
80 575 905 560 480 175 585 565 295 D160M 565 905 570 570 175 495 565 205 D160M
100 565 905 570 570 175 495 565 205 D160M 495 905 640 640 155 445 570 130 D160M
120 495 905 640 640 155 445 570 130 D180M 495 905 640 640 155 445 570 130 D180M
150 420 905 715 715 175 550 605 220 D180M 420 905 715 715 175 550 605 220 D180M
180 760 1165 715 715 175 750 605 – D180L 720 1120 800 800 145 695 655 – D180L
210 920 1120 800 800 145 695 670 – D180L 920 1120 800 800 145 695 670 – D180L
240 1120 1120 800 800 145 695 670 – D200L 1070 1070 900 900 145 595 665 – D180L
270 – – – – – – – – – – – – – – – – – –
320 – – – – – – – – – – – – – – – – – –
420 – – – – – – – – – – – – – – – – – –
520 – – – – – – – – – – – – – – – – – –
2" Casing
Model Forward Curved Blower Backward Inclined Airfoil Blower
P1 P2 Q R S1 S2 S3 S4
Max. Motor
Frame Size P1 P2 Q R S1 S2 S3 S4
Max. Motor
Frame Size
12 175 440 235 265 115 470 410 75 D90L 150 440 260 260 115 475 385 105 D100L
22 435 550 265 290 115 445 440 220 D100L 375 550 325 325 115 410 410 215 D112
32 390 550 310 345 115 390 465 140 D100L 340 550 360 360 115 375 430 160 D112
40 425 650 375 405 115 330 490 255 D112M 395 650 405 405 115 330 445 300 D112M
48 525 750 375 405 115 530 490 255 D132S 445 750 455 455 115 480 475 220 D132M
64 670 910 470 405 115 530 490 255 D132M 630 910 510 510 160 380 520 95 D132M
80 580 910 560 480 180 590 590 280 D160M 570 910 570 570 180 500 575 205 D160M
100 570 910 570 570 180 500 575 205 D160M 500 910 640 640 160 450 595 115 D160M
120 500 910 640 640 160 450 595 115 D180M 500 910 640 640 160 450 595 115 D180M
150 425 910 715 715 180 555 630 205 D180M 425 910 715 715 180 555 630 205 D180M
180 765 1170 715 715 180 755 630 405 D180L 725 1125 800 800 150 700 680 270 D180L
210 925 1125 800 800 150 700 695 270 D180L 925 1125 800 800 150 700 695 270 D180L
240 1125 1125 800 800 150 700 695 270 D200L 1075 1075 900 900 150 600 700 125 D180L
270 1275 1275 900 900 150 600 740 – D200L 1275 1275 900 900 150 600 740 – D200L
320 1250 1250 1150 1150 250 450 715 – D200L 1250 1250 1150 1150 250 450 715 – D200L
420 – – – – – – – – – 1450 1450 1150 1150 250 650 815 – D250SC
520 – – – – – – – – – 1450 1450 1350 1350 95 650 815 – D250MC
Notes: 1.) P2 is motor location. P1 & P2 can be inter charged to switch motor location.
2.) For other type of discharge arrangement, consult factory for dimensional details.

- 19 -
B + (0.5 x PIPE DIA.)
A - PIPE DIA.
CD
L
PREFILTER COIL
1 1/2"MBSP
CONDENSATE PIPE
H
SUPPLY
AIR
RETURN
AIR
SUPPLY
AIR
PREFILTER COIL
RETURN
AIR
H
CD
L1 1/2"MBSP
CONDENSATE PIPE
B + (0.5 x PIPE DIA.)
A - PIPE DIA.
28 + PIPE DIA.
A - PIPE DIA.
B + (0.5 x PIPE DIA.)
1 1/2"MBSP
CONDENSATE PIPE
A - PIPE DIA.
H
CL
AIR
RETURN
D
SUPPLY
COIL
AIR
A - PIPE DIA.
450MM
OUTLET
OUTLET
INLET
OUTLET
INLET
INLET
OUTLET
INLET
OUTLET
CONSULT FACTORY
OUTLET
PREFILTER
CONSULT FACTORY
INSTALLATION
WATER INLET AND OUTLET LOCATIONS
MODEL 12 TO 180
MODEL 210 TO 420
MODEL 520 (STAGGERED COILS)

- 20 -
INSTALLATION
1" Casing (Horizontal and Vertical Type)
Model 12 22 32 40 48 64 80 100 120 150 180 210 240
A 530 530 721 721 721 721 911 1165 1356 1546 1546 848 848
B 276 276 276 276 276 276 276 276 276 276 276 266 266
H 190 190 190 190 190 190 190 190 190 190 190 180 180
L Short Coil 325
Long Coil 425
1 Row C 169
D 38
2 Row C 191
D 44
3 Row C 211
D 56
4 Row C 198
D 83
5 Row C 206
D 116
6 Row C 195
D 138
8 Row C 194
D 192
2" Casing (Horizontal and Vertical Type)
Model 12 22 32 40 48 64 80 100 120 150 180 210 240 270 320 420 520
A 530 530 721 721 721 721 911 1165 1356 1546 1546 848 848 848 975 975 1165
B 296 296 296 296 296 296 296 296 296 296 296 266 266 266 266 266 266
H 210 210 210 210 210 210 210 210 210 210 210 180 180 180 180 180 180
L Short Coil 325 525
Long Coil 425 625
1 Row C 179
D 38
2 Row C 201
D 44
3 Row C 221
D 56
4 Row C 208
D 83
5 Row C 216
D 116
6 Row C 205
D 138
8 Row C 204
D 192
Note: 1) All dimensions are in mm, tolerances +/- 50mm.
2) Locations shown are for reference only. For certified pipe location, please consult factory.
3) Applicable to standard coil size only.