Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electric shock, or
other occurrences which may injure you or damage your
property. Consult qualified installer or service agency for
information or assistance. The qualified installer or agency
must use only factory-authorized kits or accessories when
modifying this product.
Recognize safety information. This is the safety-alert symbol (). When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.
Understand the signal words — DANGER, WARNING,
and CAUTION. These words are used with the safety-alert
symbol. Danger identifies the most serious hazards which will
result in severe personal injury or death. Warning indicates a
condition that could result in personal injury. Caution is used to
identify unsafe practices which would result in minor personal
injury or product and property damage.
Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components and
equipment location (elevated structures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning coils, and cleaning and replacing filters.
All other operations should be performed by trained service
personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
•Follow all safety codes.
•Wear safety glasses and work gloves.
•Use care in handling, rigging, and setting bulky
equipment.
Be sure all power to equipment is shut off before performing maintenance or service. More than one disconnect may
be present. Failure to do so may result in personal injury or
damage to the unit.
PRE-INSTALLATION
1. The power supply (v, ph, and Hz) must correspond to that
specified on unit rating plate.
2. The electrical supply provided by the utility must be sufficient to handle load imposed by this unit.
3. Refer to Installation, General section (page 2) and
Fig. 1A-1C for locations of electrical inlets, condensate
drain, duct connections, and required clearances before
setting unit in place.
4. This installation must conform with local building codes
and with the NEC (National Electrical Code) or ANSI
(American National Standards Institute)/NFPA (National
Fire Protection Association) latest revision. Refer to
provincial and local plumbing or wastewater codes and
other applicable local codes.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 3c 2e
PC 111Catalog No. 534-00003Printed in U.S.A.Form 40RM-23SIPg 112-04Replaces: 40RM-22SI
Moving and Storage — To transfer unit from truck to
storage site, use a fork truck. Do not stack units more than
2 high during storage. If unit is to be stored for more than
2 weeks before installation, choose a level, dry storage site free
from vibration. Do not remove plastic wrap or skid from unit
until final installation.
Rigging — All 40RM Series units can be rigged by using
the shipping skid. Units are shipped fully assembled. Do not
remove shipping skids or protective covering until unit is ready
for final placement; damage to bottom panels can result. Use
slings and spreader bars as applicable to lift unit.
INSTALLATION
General —
clearance and airflow. For units equipped with an economizer,
refer to the accessory installation instructions for additional
clearance requirements. Be sure floor, wall, or ceiling can
Allow 21/2ft at front and side of unit for service
support unit weight (Tables 1A-1F). See Fig. 1A-1C for
dimensions.
Uncrating — Move unit as near as possible to final loca-
tion before removing shipping skid.
Remove metal banding, top skid, and plastic wrap. Examine
unit for shipping damage. If shipping damage is evident, file
claim with transportation agency. Remove base skid just prior
to actual installation.
Check nameplate information against available power
supply and model number description in Fig. 2.
NOTE: Be sure to remove the styrofoam shipping pad from
the thermostatic expansion valve (TXV). Verify that it has
been removed. See Fig. 3.
Accessories — Refer to instructions shipped with each
accessory for specific information.
2
Table 1A — 40RM Physical Data, English — Cooling Units
UNIT 40RM007008012014016024028034
1
NOMINAL CAPACITY (Tons)67
/
2
10121/
2
15202530
OPERATING WEIGHT (lb)
Base Unit with TXV38138540567068569010201030
Plenum175175175225225225325325
208/230-1-601.32.4——————
208/230-3-60 and 460-3-602.42.42.42.93.75.07.510.0
575-3-601.02.02.03.03.05.07.510.0
230-3-50, 400-3-502.42.42.92.92.95.07.510.0
Motor Speed (rpm)
208/230-1-6017251725——————
208/230-3-60 and 460-3-6017251725172517251725174517451745
575-3-6017251725172517251725174517551755
230-3-50, 400-3-5014251425142514251425142514251425
REFRIGERANTR-22
Operating charge (lb)
(approx per circuit)*
3.03.01.5/1.52.0/2.02.5/2.53.5/3.54.5/4.55.0/5.0
DIRECT-EXPANSION COILEnhanced Copper Tubes, Aluminum Sine-Wave Fins
Max Working Pressure (psig)435
Face Area (sq ft)6.678.3310.013.2517.6719.8824.8629.83
No. of Splits1122222 2
No. of Circuits per Split (3 Row/4 Row)12/121 5/159/99/1212/1613/1815/2018/24
Split Type...Percentage——Face...50/50
Fins/in.1515171515171515
STEAM COIL
Max Working Pressure (psig at 260 F)20
Total Face Area (sq ft)6.676.676.6713.3313.3313.3315.015.0
Rows...Fins/in.1...91...91...91...101...101...101...101...10
HOT WATER COIL
Max Working Pressure (psig)150
Total Face Area (sq ft)6.676.676.6713.3313.3313.3315.015.0
Rows...Fins/in.2...8.52...8.52...8.52...8.52...8.52...8.52...12.52...12.5
Water Volume
Steam Coil, In (MPT)1...21/
Steam Coil, Out (MPT)1...1/
Hot Water Coil, In (MPT)1...11/
Hot Water Coil, Out (MPT)1...1
Condensate (PVC)1...1
1
/81...11/82...11/
8
2
2
2
1
/
2
1...11/
1...11/
2...11/
8
2
2
2...11/
8
1
/4 ODM/1 IDF
8
2...5/
1...21/
1...11/
2...11/
8
2
2
1...2
1...2
2...13/
8
2...13/
8
FILTERSThrowaway — Factory Supplied
Quantity...Size (in.)4...16 x 24 x 2
Access LocationEither Side
4...16 x 20 x 2
4...16 x 24 x 2
4...20 x 24 x 2
4...20 x 25 x 2
LEGEND
DX— Direct Expansion
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.
8
3
Table 1B — 40RMQ Physical Data, English — Heat Pump Units
UNIT 40RMQ008012016024028
NOMINAL CAPACITY (Tons)7
/
2
10152025
1
OPERATING WEIGHT (lb)
Base Unit with TXV3854277137201050
Plenum175175225140180
FANS
Qty...Diam. (in.)1...151...152...152...152...18
Nominal Airflow (cfm)300040006000800010,000
Airflow Range (cfm)2250-37503000-50004500-75006000-10,0007500-12,500
Nominal Motor Hp (Standard Motor)
208/230-1-602.4————
208/230-3-60 and 460-3-602.42.43.75.07.5
575-3-602.02.03.05.07.5
230-3-50, 400-3-502.42.92.95.07.5
Motor Speed (rpm)
208/230-1-601725————
208/230-3-60 and 460-3-6017251725172517451745
575-3-6017251725172517451755
230-3-50, 400-3-5014251425142514251425
REFRIGERANTR-22
Operating charge (lb)
(approx per circuit)*
3.02.0/2.03.0/3.03.5/3.54.5/4.5
DIRECT-EXPANSION COILEnhanced Copper Tubes, Aluminum Sine-Wave Fins
Max Working Pressure (psig)435
Face Area (sq ft)8.3310.019.8819.8824.86
No. of Splits12 22 2
No. of Circuits per Split159181824/16
Split Type...Percentage—Face...50/50Face...60/40
Rows...Fins/in.3...154...154...154...154...15
STEAM COIL
Max Working Pressure (psig at 260 F)20
Total Face Area (sq ft)6.676.6713.3313.3315.0
Rows...Fins/in.1...91...91...101...101...10
HOT WATER COIL
Max Working Pressure (psig)150
Total Face Area (sq ft)6.676.6713.3313.3315.0
Rows...Fins/in.2...8.52...8.52...8.52...8.52...12.5
Water Volume
Steam Coil, In (MPT)1...21/
Steam Coil, Out (MPT)1...11/
Hot Water Coil, In (MPT)1...11/
Condensate (PVC)1...11/4 ODM/1 IDF
FILTERSThrowaway — Factory Supplied
Quantity...Size (in.)
Access Location
1
/
8
8
2
2
2
2
4...16 x 24 x 2
Either SideRight or Left Side
2...11/
2...5/
1...11/
1...11/
8
8
2
2
2...11/
1...21/
1...11/
8
2...5/
2
2
1...2
1...2
2...11/
8
8
2...13/
2...5/
1...21/
1...11/
1...2
1...2Hot Water Coil, Out (MPT)1...11/
8
8
2
2
4...16 x 20 x 24...20 x 24 x 2
4...16 x 24 x 24...20 x 25 x 2
LEGEND
DX— Direct Expansion
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.
4
Table 1C — 40RMS Physical Data, English — Chilled Water Units
UNIT 40RMS008010012014016024028034
NOMINAL CAPACITY (Tons)7
OPERATING WEIGHT (lb)
Base Unit39039139166167768310351042
Plenum175175175225225225325325
FANS
Qty...Diam. (in.)1...151...151...152...152...152...152...182...18
Nominal Airflow (cfm)30003400400050006000800010,00012,000
Airflow Range (cfm)2250-3750 2250-42503000-50003750-62504500-7500 6000-10,000 7500-12,500 9000-15,000
Nominal Motor Hp
(Standard Motor)
208/230-1-602.42.4——————
208/230-3-60 and 460-3-602.42.42.42.93.75.07.510.0
575-3-602.02.02.03.03.05.07.510.0
230-3-50 and 400-3-502.42.42.92.92.95.07.510.0
Motor Speed (rpm)
208/230-1-6017251725——————
208/230-3-60 and 460-3-6017251725172517251725174517451745
575-3-6017251725172517251725174517551755
230-3-50 and 400-3-5014251425142514251425142514251425
CHILLED WATER COILEnhanced Copper Tubes, Aluminum Sine-Wave Fins
Max Working Pressure (psig)435
Face Area (sq ft) — Upper8.39.09.98.38.311.012.415.5
Face Area (sq ft) — Lower———5.58.38.312.412.4
Rows...Fins/in.3...15
STEAM COIL
Max Working Pressure
(psig at 260 F)
Total Face Area (sq ft)6.676.676.6713.3313.3313.3315.015.0
Rows...Fins/in.1...91...91...91...101...101...101...101...10
HOT WATER COIL
Max Working Pressure
(in. wg)
Total Face Area (sq ft)6.676.676.6713.3313.3313.3315.015.0
Rows...Fins/in.2...8.52...8.52...8.52...8.52...8.52...8.52...12.52...12.5
Water Volume
(gal)8.313.914.3
3
(ft
)1.11.851.90
PIPING CONNECTIONS,
Quantity...Size (in.)
Chilled Water — In1...1
Chilled Water — Out1...1
Steam Coil, In (MPT)1...2
Steam Coil, Out (MPT)1...11/
Hot Water Coil, In (MPT)1...11/
Hot Water Coil, Out (MPT)1...11/
Condensate (PVC)1...1
FILTERSThrowaway — Factory Supplied
Quantity...Size (in.)
Access LocationEither Side
1
/
2
81/
2
10121/
2
15202530
20
150
3
/8 O D F 1...13/8 ODF 2...13/8 ODF 2...13/8 ODM 2...13/8 ODM 2...13/8 ODM 2...21/8 ODM 2...21/8 ODM
3
/8 O D F 1...13/8 ODF 2...13/8 ODF 2...13/8 ODM 2...13/8 ODM 2...13/8 ODM 2...21/8 ODM 2...21/8 ODM
1
/
2
2
2
2
4...16 x 24 x 2
1...11/
1...11/
2
2
1
/4 ODM/1 IDF
4...16 x 20 x 24...20 x 24 x 2
4...16 x 24 x 24...20 x 25 x 2
1...21/
1...11/
2
2
1...2
1...2
5
Table 1D — 40RM Physical Data, SI — Cooling Units
UNIT 40RM007008012014016024028034
NOMINAL CAPACITY (kW)21263543527087105
OPERATING WEIGHT (kg)
Base Unit with TXV173175184304311313463467
Plenum808080102102102148148
FANS
Qty...Diam. (mm)1...3811...3811...3812...3812...3812...3812...4572...457
Nominal Airflow (L/s)11331604188823602831377547195663
Airflow Range (L/s)850-1416 1203-2006 1416-2360 1770-2949 2124-3539 2831-4719 3539-5899 4247-7079
Nominal Motor kW (Standard Motor)
208/230-1-600.971.79——————
208/230-3-60 and 460-3-601.791.791.792.162.763.735.607.46
575-3-600.751.491.492.242.243.735.607.46
230-3-50, 400-3-501.791.792.162.162.163.735.607.46
Motor Speed (r/s)
208/230-1-6028.828.8——————
208/230-3-60 and 460-3-6028.828.828.828.828.829.129.129.1
575-3-6028.828.828.828.828.829.129.329.3
230-3-50, 400-3-5023.823.823.823.823.823.823.823.8
REFRIGERANTR-22
Operating charge (kg)
(approx per circuit)*
DIRECT-EXPANSION COILEnhanced Copper Tubes, Aluminum Sine-Wave Fins
Max Working Pressure (kPag)2999
Face Area (sq m)0.620.770.930.931.641.852.302.77
No. of Splits11222222
No. of Circuits per Split (3 Row/4 Row)12/1215/159/99/1212/1613/1815/2018/24
Split Type...Percentage——Face...50/50
Fins/m591591670591591670591591
STEAM COIL
Max Working Pressure (kPag at 126 C)138
TotalFaceArea(sqm)0.620.620.621.241.241.241.391.39
Rows...Fins/m1...3551...3551...3551...3941...3941...3941...3941...394
HOT WATER COIL
Max Working Pressure (kPag)1034
TotalFaceArea(sqm)0.620.620.621.241.241.241.391.39
Rows...Fins/m2...3352...3352...3352...3352...3352...3352...4932...493
Water Volume
(L)31.452.654.1
3
(m
)0.0310.0520.054
PIPING CONNECTIONS,
Quantity...Size (in.)
DX Coil — Suction (ODF)1...1
DX Coil — Liquid Refrigerant (ODF)
Steam Coil, In (MPT)
Steam Coil, Out (MPT)1...1
Hot Water Coil, In (MPT)
Hot Water Coil, Out (MPT)
Condensate (PVC)1...1
FILTERSThrowaway — Factory Supplied
Quantity...Size
Access LocationEither Side
LEGEND
DX — Direct Expansion
TXV — Thermostatic Expansion Valve
Table 1E — 40RMQ Physical Data, SI — Heat Pump Units
UNIT 40RMQ008012016024028
NOMINAL CAPACITY (kW)2635527087
OPERATING WEIGHT (kg)
Base Unit with TXV175194323326477
Plenum80801024444
FANS
Qty...Diam. (mm)1...3811...3812...3812...3812...457
Nominal Airflow (L/s)16041888283137754719
Airflow Range (L/s)1203-20061416-23602124-35392831-47193539-5899
Nominal Motor kW (Standard Motor)
208/230-1-601.79————
208/230-3-60 and 460-3-601.791.792. 763.735.60
575-3-601.491.492.243.735.60
230-3-50, 400-3-501.792.162.163.735.60
Motor Speed (r/s)
208/230-1-6028.8————
208/230-3-60 and 460-3-6028.828.828. 829.129.1
575-3-6028.828.828.829.129.3
230-3-50, 400-3-5023.823.823.823.823.8
REFRIGERANTR-22
Operating charge (kg)
(approx per circuit)*
DIRECT-EXPANSION COILEnhanced Copper Tubes, Aluminum Sine-Wave Fins
Max Working Pressure (kPag)2999
Face Area (sq m)0.770.931.851.852.30
No. of Splits12222
No. of Circuits per Split159181824/16
Split Type...Percentage—Face...50/50Face...60/40
Rows...Fins/m3...5914...5914...5914...5914...591
STEAM COIL
Max Working Pressure (kPag at 126 C)138
Total Face Area (sq m)0.620.621.241.241.39
Rows...Fins/m1...3551...3551...3941...3941...394
HOT WATER COIL
Max Working Pressure (kPag)1034
Total Face Area (sq m)0.620.621.241.241.39
Rows...Fins/m2...3352...3352...3352...3352...493
Water Volume
(L)31.452.6
3
)0.0310.052
(m
PIPING CONNECTIONS,
Quantity...Size (in.)
DX Coil — Vapor (ODF)1...1
DX Coil — Liquid Refrigerant (ODF)1...5/
Steam Coil, In (MPT)1...21/
Steam Coil, Out (MPT)1...11/
Hot Water Coil, In (MPT)1...11/
Hot Water Coil, Out (MPT)1...1
Condensate (Male PVC)1...1
FILTERSThrowaway — Factory Supplied
Quantity...Size
Access LocationEither SideRight or Left Side
LEGEND
DX — Direct Expansion
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.
1.360. 91/0.911.36/1.361.59/1.592.04/2.04
1
/
8
8
2
2
2
1
/
2
4...406 x 610 x 51
2...11/
2...5/
1...21/
1...11/
1...11/
1...11/
8
8
2
2
2
2
4...406 x 508 x 51
4...406 x 610 x 51
1
/4 ODM/1 IDF
2...11/
8
2...5/
1...21/
1...11/
1...2
1...2
4...406 x 610 x 51
4...406 x 508 x 51
8
2
2
4...406 x 610 x 51
4...508 x 635 x 51
2...13/
8
7
Table 1F — 40RMS Physical Data, SI — Chilled Water Units
UNIT 40RMS008010012014016024028034
NOMINAL CAPACITY (kW)26293543527087105
OPERATING WEIGHT (kg)
Base Unit177177177300307310469473
Plenum808080102102102148148
FANS
Qty...Diam. (mm)1...3811...3811...3812...3812...3812...3812...4572...457
Nominal Airflow (L/s)14161605188823602831377547195663
Airflow Range (L/s)1062-17701204-20061416-23601770-29492124-35392831-47193539-58994247-7079
Nominal Motor kW
(Standard Motor)
CHILLED WATER COILEnhanced Copper Tubes, Aluminum Sine-Wa ves
Max Working Pressure (kPag)2999
Face Area (sq m) — Upper0.770.840.910.770.771.021.151.44
Face Area (sq m) — Lower———0.510.770.771.151.15
Rows...Fins/m3...5913...5913...5913...5913...5913...5913...5913...591
Max Working Pressure (kPag)1034
TotalFaceArea(sqm)0.620.620.621.241.241.241.391.39
Rows...Fins/m2...3352...3352...3352...3352...3352...3352...4932...493
Water Volume
(L)31.452.654.1
3
(m
)0.0310.0520.054
PIPING CONNECTIONS,
Quantity...Size (in.)
Chilled Water — In
Chilled Water — Out
Steam Coil, In (MPT)
Steam Coil, Out (MPT)1...1
Hot Water Coil, In (MPT)
Hot Water Coil, Out (MPT)
Condensate (PVC)1...1
LEGEND
TXV — Thermostat Expansion Valve
*YC and WD option codes for all 034 size units and 008, 010 size units wi th 208/ 230-1-60
power designate standard motor and high-static drive.
NOTE: See the following table for the sizes available for each unit.
UNIT007008010012014016024028034
40RMXXXXXXXX
40RMQXXXXX
40RMSXXXXXXXX
Fig. 2 — Model Number Nomenclature
LEGEND
TXV — Thermostatic Expansion Valve
Fig. 3 — Foam Block Location
12
Unit Positioning — The unit can be mounted on the
floor for vertical application with return air entering the face of
the unit and supply air discharging vertically through the top of
the unit. The unit can also be applied in a horizontal arrangement with return air entering horizontally and the supply air
discharging horizontally. When applying the unit in a horizontal arrangement, ensure the condensate drain pan is located at
the bottom center of the unit for adequate condensate disposal.
See Fig. 4 for condensate connections for each unit position.
Typical positioning and alternate return air locations are
shown in Fig. 4. Alternate return air locations can be used by
moving the unit panel from the alternate return air location to
the standard return air location. Refer to overhead suspension
accessory drawing (Fig. 5) for preferred suspension technique.
The unit needs support underneath to prevent sagging.
IMPORTANT: Do NOT attempt to install unit with return
air entering top panel of unit. Condensate will not drain
from unit.
Unit Isolation — Where extremely quiet operation is
essential, install isolators between floor and base of unit, or
between ceiling and top section of unit.
Be sure that unit is level and adequately supported. Use
channels at front and sides of unit for reference points when
leveling.
RefrigerantandChilledWaterPiping
Access —
knockouts for refrigerant and chilled water piping. These
knockouts are located on both sides of the unit for installation
flexibility. The standard knockouts provide sufficient access to
the unit’s coils for all 40RM and some 40RMQ units, however,
for 40RMQ016,028 and 40RMS units, additional holes must
be field-fabricated to accommodate the piping. See Fig. 6 for
the positions and dimensions of the additional access holes required for these units, including hole diameters and drilling
dimensions. Recommended access hole use is also listed for all
units. Note that Fig. 6 shows the access holes on the controlbox side of the unit; this is the side of the unit with the coil
headers, so it is used most often for piping access.
IMPORTANT:Donotburyrefrigerantpiping
underground.
The 40RM Series units come with standard
Refrigerant Piping — See Tables 1A, 1B, 1D, 1E for
refrigerant pipe connection sizes. For ease in brazing, it is recommended that all internal solder joints be made before unit is
placed in final position.
The 40RM and 40RMQ direct-expansion units have internal factory-installed thermostatic expansion valves (TXVs),
distributors, and nozzles for use with R-22. See Table 2 for part
numbers. Knockouts are provided in the unit corner posts for
40RM and 40RMQ008 and 012 refrigerant piping. The
40RMQ016,024 and 028 units requires additional fieldfabricated piping access holes. See Fig. 6, which also lists recommended knockouts and access holes to use for each 40RM
and 40RMQ unit size. Recommended fittings are listed in
Table 3 .
The sensor bulb capillary tubes must be routed from the
TXVs inside the unit through one of the piping access holes.
Clamp the TXV sensor bulb on a vertical portion of the suction
line, outside the unit. See Fig. 7.
NOTE: Be sure to remove the styrofoam shipping pad from
the TXV. Verify that it has been removed. See Fig. 3.
IMPORTANT: Never attach the sensor to the suction
manifold. Do NOT mount the sensor on a trapped portion
of the suction line.
LEGEND
Accessory Line
Alternate Air Intake and Discharge
Air Intake and Discharge
Fig. 4 — Typical Unit Positioning
The 40RM Series evaporator coils have a face-split design.
Ensure that lower circuit of coil is first on/last off when
connected to the condensing unit and/or system controls. See
Fig. 8.
External TXV equalizer connections are provided and
factory-brazed into the coil suction manifolds.
If suction line must be horizontal, clamp bulb to suction line
at least 45 degrees above bottom, at approximately the
4 o’clock or 8 o’clock position. See Fig. 9.
NOTE: The 40RMQ units are supplied with factory-installed
thermostatic expansion valves and check valve bypasses. No
extra piping connections or kits are required to install the
40RMQ with a 38AQ, 38ARQ, or 38AQS condensing unit in a
heat pump system, however, some field-supplied components
may be required. See the following two sections.
HEAT PUMP SYSTEM PIPING — Addition of a liquid solenoid valve (LLSV) is recommended. The LLSV must be a
bi-flow type suited for use in heat pump systems. Refer to the
38AQ, ARQ, AQS literature for recommended component
part numbers. Wire the solenoid valve in parallel with the compressor contactor coil.
The LLSV must be installed at the outdoor unit with the
flow arrow pointed toward the outdoor unit (in-flow direction
for the heating mode.)
38ARQ DUPLEX/40RMQ024 HEAT PUMP SYSTEM
PIPING — Two 38ARQ012 heat pump condensing units may
be connected in a duplex arrangement with the 40RMQ024.
See Fig. 10. Ensure that the lower circuit of the 40RMQ coil is
the first on/last off by connecting to the “A” condensing unit
and by configuring the controls so that the “A” condensing unit
is the first on/last off.
38ARQ012/38AQS016 DUPLEX/40RMQ028 HEAT PUMP
SYSTEM PIPING — One 38ARQ012 and one 38AQS016
heat pump condensing unit may be connected in a duplex
arrangement with the 40RMQ028. See Fig. 10. The
40RMQ028 has a 60/40 face split coil. Ensure that the larger
coil section (connection “B”, Fig. 8) is connected to the
38QAS016 and the smaller coil section is connected to the
38AQS012. In addition, ensure that the lower circuit of the
40RMQ coil is the first on/last off by connecting to the “A”
condensing unit and by configuring (see 38ARQ,AQS installation instructions for more information) the controls so that the
“A” condensing unit is the first on/last off.
FILTER DRIER REQUIREMENTS FOR HEAT PUMP
SYSTEMS — The 38ARQ and 38AQS units do not include
filter driers. Filter driers must be field-supplied and fieldinstalled. The filter driers used with these systems must be
bi-flow types suited for use in heat pump applications. Refer to
the 38AQ,ARQ,AQS literature for recommended component
part numbers. See Fig. 11 for filter drier quantity and location
information.
Fig. 6 — Refrigerant and Chilled Water Piping Access Holes
in. (mm)
FIELD-FABRICATED HOLE POSITION
DIMENSIONS, in. (mm)
TXV — Thermostatic Expansion Valve
NOTE: Component location arrangement shown for field installation of
sight glasses, solenoid valves, filter driers, and TXV sensing bulbs. The
TXVs and equalizer lines are factory installed.
LEGEND
Fig. 7 — Face-Split Coil Suction and
Liquid Line Piping (Typical)
FIRST ON/LAST OFF = B
VERTICAL INSTALLATION
FIRST ON/LAST OFF = A
HORIZONTAL INSTALLATION
Fig. 8 — Typical Evaporator Coil Connections
(40RM, 40RMQ)
15
TXV — Thermostatic Expansion Valve
LEGEND
NOTE: The 8 o’cloc k position is shown above.
Fig. 9 — TXV Sensing Bulb Location
ELECTRIC
HEATER
ACCESSORY
DISCONNECT
PER NEC
24 V
CONTROL
WIRE
UNITQUANTITY REQUIREDFIGURE REFERENCE
38ARQ008,0121B
38AQS0162A
38ARQ012 (2)2A
38ARQ012,
AQS016
2A
LEGEND
TXV — Thermostatic Expansion Valve
Fig. 11 — Filter Drier Quantity and Location
FUSED
DISCONNECT
SWITCH*
40RMQ024
UNIT
SUBBASE
ACCESSORY
RETURN
AIR
15 DIAMS
MIN
LEGEND
NEC — National Electrical Code
TXV — Thermostatic Expansion Valve
Piping
10 DIAMS
MIN
BULB CAPILLARY
TUBES
8 DIAMS
MIN
CONDENSATE
DRAIN
*Field supplied.
NOTES:
1. All piping must follow standard refrigerant piping techniques. Refer to
Carrier System Design Manual for details.
2. All wiring must comply with the applicable l ocal and national codes.
3. Wiring and piping shown are general points-of-connection guides only
and are not intended for, or to include all details for, a specific installation.
4. Filter driers must be bi-flow type suited f or heat pump duty.
5. Condensing unit A should be the first on and last off and be connected to
the lower half of the coil.
6. Internal factory-supplied TXVs not sho w n.
SIGHT
GLASS*
INSULATED
VAPOR LINE
FILTER
DRIER*
FUSED
DISCONNECT
SWITCH*
LIQUID
LINE
CONDENSING
UNIT B
INSULATED
VAPOR LINE
LIQUID
LINE
CONDENSING
UNIT A
Fig. 10 — Typical Installation — 40RMQ024,028
16
Table 2 — Factory-Installed Nozzle and Distributor Data
*Feeder tube size is 1/4 in. (6.35 mm).
NOTE: Hot gas bypass applications require field-supplied auxiliary side connector.
Table 3 — Fitting Requirements
UNIT
ACCESS
HOLE NO.*
1Suction—
40RM
007
3Liquid—
40RM
40RMQ
008
40RMS
008-012
1Suction—
3Liquid—
4Return—
5Supply—
1Sucti onLower(2) 1
2LiquidLower
40RM
012
3LiquidUpper
4SuctionUpper
1Sucti onLower(2) 1
2LiquidLower
40RMQ
012
3LiquidUpper
4SuctionUpper
*See Fig. 6 for access hole location by number.
†Fittings are listed in order from header or tee stub connection out to access hole in corner support post.
CONNECTION
TYPE
CIRCUIT
FEEDER TUBES
PER DISTRIBUTOR*
Qty...Size (in.)
1
/
4
1
/
4
1
/
4
1
/
4
1
/
4
1
9...
/
4
6...1/
4
1
12...
/
4
16...1/
4
1
/
4
1
/
13...
4
18...3/
16
3
/
16
1
/
15...
4
20...3/
16
3
/
16
1
/
18...
4
24...3/
16
FITTINGS REQUIRED†
1
1
/8 Street Elbow
11/8 Nipple, 105/8 L
1
1
/8 Long Radius Elbow
5
/8 Street Elbow
5
/8 Nipple, 85/8 L
5
/8 Long Radius Elbow
1
1
/8 Street Elbow
11/8 Nipple, 85/8 L
1
1
/8 Long Radius Elbow
5
/8 Street Elbow
5
/8 Nipple, 85/8 L
5
/8 Long Radius Elbow
3
1
/8 Nipple, 43/8 L
13/8 Long Radius Elbow
3
1
/8 Nipple, 73/8 L
13/8 Long Radius Elbow
3
/8 Nipple, 65/8 L
1
13/8 Long Radius Elbow
5
/8 Street Elbow
5
/8 Nipple, 81/2 L
5
/8 Long Radius Elbow
5
/8 Street Elbow
5
/8 Nipple, 131/2 L
5
/8 Long Radius Elbow
1
/8 Nipple, 53/4 L
1
1
1
/8 Long Radius Elbow
11/8 Nipple, 12 L
1
1
/8 Long Radius Elbow
5
/8 Street Elbow
5
/8 Nipple, 51/2 L
5
/8 Long Radius Elbow
5
/8 Street Elbow
5
/8 Nipple, 101/2 L
5
/8 Long Radius Elbow
1
/8 Nipple, 55/8 L
1
11/8 Long Radius Elbow
1
1
/8 Nipple, 12 L
11/8 Long Radius Elbow
(in.)
1
/
Street Elbow
8
1
/
Street Elbow
8
NOZZLE
Qty...Part No.
1...E5
1...C6
1...C6
2...E4
2...E4
2...E5
2...E6
2...C6
2...C6
2...E8
2...C8
2...E8
2...C10
2...C15
2...E15
2...C12
2...C17
17
Table 3 — Fitting Requirements (cont)
UNIT
ACCESS
HOLE NO.*
CONNECTION
TYPE
CIRCUIT
1SuctionLower
2LiquidLower
40RM
014
3LiquidUpper
4SuctionUpper
4SupplyLower
5ReturnLower
40RMS
014-024
6ReturnUpper
7SupplyUpper
1SuctionLower
2LiquidLower
40RM
016
3LiquidUpper
4SuctionUpper
3SuctionLower
5SuctionLower
40RMQ016,
024,028
6LiquidUpper
7SuctionUpper
1SuctionLower
2LiquidLower
40RM
024
3LiquidUpper
4SuctionUpper
1SuctionLower
2LiquidLower
40RM
028
3LiquidUpper
4SuctionUpper
*See Fig. 6 for access hole location by number.
†Fittings are listed in order from header or tee stub connection out to access hole in corner support post.
FITTINGS REQUIRED†
1
11/8 Nipple, 75/8 L
1
5
5
5
5
5
5
1
1
1
1
1
1
1
1
13/8 Nipple, 33/8 L
1
1
1
1
1
1
1
1
1
11/8 Long Radius Elbow
5
5
5
5
5
5
1
11/8 Long Radius Elbow
1
11/8 Long Radius Elbow
1
1
5
5
5
5
5
5
5
5
1
1
1
1
1
1
11/8 Long Radius Elbow
5
5
5
5
5
5
1
11/8 Long Radius Elbow
1
11/8 Long Radius Elbow
1
13/8 Nipple, 11 L
1
5
5
5
5
5
5
1
1
13/8 Nipple, 231/4 L
1
(in.)
1
/8 Street Elbow
1
/8 Long Radius Elbow
/8 Street Elbow
/8 Nipple, 17/16 L
/8 Long Radius Elbow
/8 Street Elbow
/8 Nipple, 111/2 L
/8 Long Radius Elbow
1
/8 Nipple, 55/8 L
1
/8 Long Radius Elbow
1
/8 Nipple, 13 L
1
/8 Long Radius Elbow
3
/8 Long Radius Elbow
3
/8 Nipple, 33/4 L
3
/8 Long Radius Elbow
3
/8 Long Radius Elbow
3
/8 Long Radius Elbow
3
/8 Long Radius Elbow
3
/8 Nipple, 7 L
3
/8 Long Radius Elbow
3
/8 Long Radius Elbow
3
/8 Nipple, 113/4 L
3
/8 Long Radius Elbow
1
/8 Street Elbow
1
/8 Nipple, 23/4 L
/8 Street Elbow
/8 Nipple, 13/8 L
/8 Long Radius Elbow
/8 Street Elbow
/8 Nipple, 111/2 L
/8 Long Radius Elbow
1
/8 Nipple, 55/8 L
1
/8 Nipple, 13 L
1
/8 Nipple, 3 L
1
/8 Long Radius Elbow
/8 Nipple, 27/8 L
/8 45° Elbow
/8 Nipple, 15/8 L
/8 Long Radius Elbow
/8 Nipple, 27/8 L
/8 45° Elbow
/8 Nipple, 41/4 L
/8 Long Radius Elbow
1
/8 Nipple, 5 L
1
/8 45° Elbow
1
/8 Nipple, 83/4 L
1
/8 Long Radius Elbow
1
/8 Street Elbow
1
/8 Nipple, 75/8 L
/8 Street Elbow
/8 Nipple, 61/
/8 Long Radius Elbow
/8 Street Elbow
/8 Nipple, 91/
/8 Long Radius Elbow
1
/8 Nipple, 55/8 L
1
/8 Nipple, 11 L
3
/8 Street Elbow
3
/8 Long Radius Elbow
/8 Street Elbow
/8 Nipple, 11/
/8 Long Radius Elbow
/8 Street Elbow
/8 Nipple, 193/
/8 Long Radius Elbow
3
/8 Nipple, 43/16 L
3
/8 Long Radius Elbow
3
/8 Long Radius Elbow
L
2
L
2
L
2
L
4
18
Table 3 — Fitting Requirements (cont)
UNIT
40RMS
028, 034
40RM
034
*See Fig. 6 for access hole location by number.
†Fittings are listed in order from header or tee stub connection out to access hole in corner support post.
ACCESS
HOLE NO.*
5SupplyLower
6ReturnLower
7ReturnUpper
8SupplyUpper
1SuctionLower
2LiquidLower
3LiquidUpper
4SuctionUpper
CONNECTION
TYPE
CIRCUIT
FITTINGS REQUIRED†
2
21/8 Nipple, 31/2 L
2
2
2
21/8 Long Radius Elbow
2
2
2
2
2
2
1
1
1
5
5
5
5
5
5
1
1
1
1
(in.)
1
/8 Long Radius Elbow
1
/8 Long Radius Elbow
1
/8 Long Radius Elbow
1
/8 Nipple, 3 L
1
/8 Long Radius Elbow
1
/8 Nipple, 67/8 L
1
/8 Long Radius Elbow
1
/8 Long Radius Elbow
1
/8 Nipple, 117/8 L
1
/8 Long Radius Elbow
3
/8 Street Elbow
3
/8 Nipple, 3 L
3
/8 Long Radius Elbow
/8 Street Elbow
/8 Nipple, 73/4 L
/8 Long Radius Elbow
/8 Street Elbow
/8 Nipple, 181/2 L
/8 Long Radius Elbow
3
/8 Nipple, 43/16 L
3
/8 Long Radius Elbow
3
/8 Nipple, 191/4 L
3
/8 Long Radius Elbow
Chilled Water Piping — See Tables 1C and 1F for
chilled water connection sizes. For ease in brazing, it is recommended that all internal solder joints be made before unit is
placed in final position.
Knockouts are provided in the unit corner posts for 40RM
and 40RMQ refrigerant piping; additional field-fabricated access holes are required for 40RMS chilled water piping. See
Fig. 6, which lists recommended knockouts and access holes to
use for each 40RMS unit size.
To size, design, and install chilled water piping, consult the
Carrier System Design manual. See Fig. 12 for an example of a
typical installation. Recommended fittings are listed in Table 3.
To access 40RMS coil vents and drains, remove the unit
side panel over the coil header. Vent and drain plugs are on the
top and bottom of header, respectively. See the Service section
for information on preventing coil freeze-up during winter.
Fig. 12 — Typical 40RMS Chilled Water Piping
19
Condensate Drain — Install a trapped condensate drain
line to unit connection as shown in Fig. 13. The unit drain connection is a PVC stub. See Fig. 14. Some areas may require an
adapter to connect to either galvanized steel or copper pipe.
For these applications, install a field-supplied threaded PVC
adapter.
NOTE: A trap must be installed in the condensate drain line to
ensure that the static pressure of fans is balanced with the
water column in the drain line and that condensate can drain
completely from pan. Without a trap, air can be drawn up drain
line until water level in condensate pan becomes equal to static
pressure created by fans, preventing complete drainage. Conditions will worsen as filters become dirty.
Install clean-out plugs in trap. Pitch drain line downward to
an open floor drain or sump. Provide service clearance around
drain line to permit removal of unit panels. Observe all local
sanitary codes.
As shipped, the unit’s condensate drain pan is NOT sloped
towards the drain connection. The pan slope must be changed
to pitch towards the side of the unit with the drain connection.
See Fig. 14. Loosen the 2 screws next to the drain outlet at both
ends of the unit, push drain pan down in the slots near the drain
connection, and up in the slots on the opposite end. Retighten
screws. The pan should have a pitch of at least
1
/4-in. over its
length toward the drain connection.
Fan Motors and Drives — Motor and drive packages
are factory installed in all units. The standard motor and drive
packages consist of the following items:
1—fanmotor
1 — adjustable motor pulley
1—fanpulley
1 — fanbelt(40RM007-012,40RMQ008-012,
40RMS008-012 units)
2 — matched fan belts (40RM014-034, 40RMS014-034,
40RMQ014-028 units)
For instructions on changing fan rotation, changing drive
speeds and adjusting drives, see Pulley and Drive Adjustment
in the Service section.
OTE: Dimensions in [ ] are in millimeters.
Fig. 13 — Condensate Drains
Fig. 14 — Drain Pan Slope Adjustment
20
Power Supply and Wiring — Check the unit data
23
22
2
1
1
3
1
2
1
1
1
0
5
°
C
6
00
VR
J
A
W
FAN
CONTACTOR
24V
TERMINAL
BLOCK
POWER
WIRING
KNOCKOUT
plate to ensure that available power supply matches electrical
characteristics of the unit. Provide a disconnect switch of size
required to provide adequate fan motor starting current. See
Tables 4-6 for unit electrical data.
Install disconnect switch and power wiring in accordance
with all applicable local codes. See Fig. 15-17 and the unit
label diagram. For units with motor sizes less than 5 Hp
(3.7 kW), connect power wiring to unit with no. 10 ring terminal. For units with motor sizes of 5 Hp (3.7 kW) or more, connect power wiring with
The 40RM, 40RMQ and 40RMS size 007-016 units (except
40RM016 with YC or WD option) that have motors wired for
1
/4-in. ring terminal.
460-v, 3-ph, 60 Hz operation can be field-converted to
208/230-v, 3-ph, 60 Hz operation. Rewire the motor according
to the diagram plate on the motor. After reconfiguring the motor, mark the motor specifying 208-v or 230-v operation replacing the 460-v sticker information on the units’ corner post.
Fan motors are factory-installed on all units. Indoor-fan
contactors are located in the fan contactor box behind the side
access panel (see Fig. 15 and 16). Wire the thermostat to the
24-v control circuit terminal block located in the side of the fan
contactor control box, according to Fig. 17 or the unit label
diagram. If the air handler is part of a split system, complete the
wiring from the condensing unit to the thermostat shown in
Fig. 17.
FLA— Full Load Amps
MOCP— Maximum Overcurrent Protection
*Motors are designed for satisfactory operation within 10% of nominal volt-
ages shown. Voltages should not exceed the limits shown in the Voltage Limits column.
NOTES:
1. Minimum circuit amps (MCA) and MOCP values are calculated in ac cordance with NEC (National Electrical Code), Article 440.
2. Motor FLA values are es tablished in accordance with UL (Underw riters’
Laboratories) Standard 1995.
3. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%.
voltage imbalance.
= 100 x
LEGEND
Use the following formula to determi ne the per centag e of
max vol tage deviation from average voltage
average voltage
EXAMPLE: Supply voltage is 400-3-50.
AB = 393 v
BC = 403 v
AC = 396 v
Average Voltage =
393 + 403 + 396
1192
=
3
=
397
3
Determine maximum deviation from average voltage.
(AB) 397 – 393 = 4 v
(BC) 403 – 397 = 6 v
(AC) 397 – 396 = 1 v
Maximum deviation is 6 v.
Determine percent voltage imbalance.
% Voltage Imbalance = 100 x
This amount of ph ase i mbalan ce i s satisfactor y becau se it i s below the maximum allowable 2%.
IMPORTANT: I f the supply voltage phase imbalanc e is more than
2%, contact your local electric utility company immediately.
6
397
=1.5%
23
Fig. 17 — Unit Wiring
LEGEND
EQUIP— Equipment
GND— Ground
HC— Heating Contactor
HTR— E lectric Heat er
IFC— Indoor-Fan Contactor
IFM— Indoor-Fan Motor
TB— Terminal Block
T’STAT — Thermostat
NOTE: Use copper conductors only.
Factory Wiring
Field Control Wiring
Table 6 — Fan Contactor Coil Data
UNIT
40RM, 40RMQ
40RMS
007-0342410
VOLTAGE
(vac)
MAXIMUM
HOLDING
VA
Connecting Ductwork — Refer to the Carrier System
Design Manual for the recommended design and layout of
ductwork. Figure 18 shows recommended duct connection to
units with 2 fans.
Do not operate unit without ductwork or discharge plenum
unless fan speed has been adjusted for external static pressure of zero in. wg. Failure to do so may result in motor
overload.
DISCHARGE CONNECTIONS — Ductflangesare
factory-supplied; they are shipped inside the unit attached to
the hairpin end of the coil tube sheet for field installation. Using the existing screws, install the duct flanges on the unit’s fan
deck. Each fan discharge requires 2 flanges; each flange must
be bent in the middle to conform to the discharge opening. See
Fig. 19. After flanges are installed, connect them to the supply
duct using a canvas connection to prevent vibration. It is important that this connection be properly fabricated to prevent
high air friction losses and air noise.
RETURN CONNECTION — When using return-air ductwork, route return-air duct to the unit’s return air inlet near the
filter rack, using a canvas connection to prevent transmission
of unit vibration. If the duct blocks off the unit’s access panel,
provide a slip joint in the ductwork to permit removal for
servicing.
OUTDOOR-AIR INLET CONNECTION —Connect outdoorair inlet to field-installed accessory economizer. Refer to
Economizer Installation Instructions.
Return-Air Filters — Type and size of filters are shown
in Tables 1A-1F and are factory-supplied and factory-installed.
In all units with 2 fans, a filter replacement tool (hook) is
shipped inside the unit for field use when replacing filters.
See the Service section for instructions on filter element
replacement.
Fig. 18 — Typical Fan Discharge Connections
for Multiple Fan Units
24
Fig. 19 — Duct Flange Installation
START-UP
Before starting unit, check the following and correct as nec-
essary:
•Is unit solidly supported?
•Is fan adjusted for speed and pulley alignment?
•Are pulleys, motor, and bearings securely mounted?
•Are there any loose parts that will rattle or vibrate?
•Is condensate drain pan pitched for correct drainage?
•Are coil baffle plates tight against coil to prevent air
bypass?
•Are all panels securely fastened?
•Are all electrical connections correct and tight?
Also refer to condensing unit instructions before starting a
split system. A split system start-up checklist is provided at the
end of these instructions.
SERVICE
Inspection and maintenance should be performed at regular
intervals and should include the following:
•Complete cleaning of cabinet, fan wheel, cooling coil,
condensate pan and drain, heating coils, and return-air
grille (if present).
•Inspection of panels and sealing of unit against air
leakage.
•Adjustment of fan motor, belt, bearings, and wheels.
•Cleaning or replacement of filters.
•Testing for cooling/heating system leaks.
•Checking of all electrical connections.
Most unit service can be performed by removing one or
both of the unit’s side panels. Coil cleaning or removal or insulation cleaning may require removal of a rear, top, or bottom
panel, depending on the unit’s orientation. When service is
completed, replace unit panels.
Panels — Panels are fastened to unit frame with sheet metal
screws. Fan and coil compartment must be sealed tightly after
service to prevent air from bypassing the cooling coil.
Fan Motor Lubrication — Fan motor supplied with
unit is permanently lubricated and requires no further
lubrication.
Fan Shaft Bearings — Bearings on size 007-012 units
are sealed, permanently lubricated bearings that require no
further lubrication. Size 014-034 units have pillow-block bearings (Fig. 20) that must be lubricated with suitable bearing
grease approximately every 3 months. See Table 7 for suitable
lubricants.
Table 7 — Lubricant Data
MANUFACTURERLUBRICANT
MobilMobilplex EP No. 2
SunocoPrestige 42
TexacoMultifak 2
TexacoRegal AFB-2*
*Preferred lubricant because it contains rust and oxidation inhibitors.
Fig. 20 — Fan Shaft, Bearings, and Fan Wheel
(Typical)
25
Centering Fan Wheel — If fan and fan shaft assembly
are not properly centered, blades may scrape against scroll or
may create an objectionable whistling noise. It may be necessary to adjust individual fan wheels or move entire fan shaft.
See the following two sections.
Fan Shaft Position Adjustment —Loosen set-
screw or locking collar of each fan shaft bearing. Slide shaft
into correct position and replace locking collar (Fig. 21). To replace locking collar, push collar up against inner face of bearing. Turn collar in direction of fan rotation until tight, and tighten setscrew. Tightening locking collar in direction of fan rotation results in further tightening of collar should setscrew work
itself loose.
Individual Fan Wheel Adjustment — Loosenthe
2 locking bolts holding fan wheel hub to shaft. See Fig. 20.
Position fan wheel in center of the fan housing and tighten
locking bolts. Clearance between wheel and housing should be
the same on both sides.
Fan Belts — Motor mounting plate and motor support an-
gles are slotted to permit both vertical and horizontal adjustment. Adjust belt(s) for correct deflection by loosening motor
plate mounting bolts, moving motor/plate assembly forward or
back, and retightening bolts. Press down on belt with one finger midway between fan and motor pulleys to check deflection.
For units with motor sizes up to and including 3.7 Hp
(2.76 kW), correct deflection is
motor sizes, correct deflection is1/8-in. (3.2 mm). See Fig. 22.
NOTE: The 028 and 034 size units with 60 Hz motors
(standard or medium static drive) are shipped with an extra set
of belts. Use the preinstalled belts or extra belts depending on
the adjustable pulley setting.
If complete belt replacement is required during servicing,
loosen the motor plate mounting bolts (Fig. 22), move motor/
plate assembly towards fan pulley, and pull belt(s) off pulleys.
Reverse the procedure with new bolts and readjust deflection.
3
/16-in. (4.8 mm). For larger
Fan Rotation — Correct fan rotation with respect to fan
outlet is shown in Fig. 23.
To reverse the direction of rotation of a 3-phase fan motor,
reverse any 2 of the power leads. Refer to the connection diagram on the inside of motor terminal box cover for proper reversing procedure of single-phase motor.
Fig. 21 — Fan Shaft Bearing
Fig. 22 — Fan Motor Mounting
26
Fig. 23 — Fan Rotation
Fan Pulley Alignment — Align as follows:
1. Loosen setscrews on pulleys.
2. Align pulleys visually and tighten setscrews on fan pulley
to lock it in place.
3. Use the methods shown in Fig. 24 to check proper pulley
alignment.
4. If pulleys are not in correct alignment, loosen the motor
holddown bolts and slide the motor axially until the pulleys are aligned.
5. Tighten motor holddown bolts.
Pulley and Drive Adjustment — To obtain desired
fan speed, refer to the fan motor and drive data in Tables 8A11D and adjust fan motor pulley as follows:
1. Remove belt from fan motor pulley after loosening motor
from motor base.
2. Loosen setscrew in moveable flange of pulley. Screw
moveable flange toward fixed flange to increase the fan
speed and away from fixed flange to reduce speed. Before tightening setscrew, make certain that setscrew is
over nearest flat surface of pulley hub (Fig. 24).
Increasing fan speed produces a greater load on motor. Do
not exceed rated capacity of motor.
Condensate Drains — Keep condensate drains free of
dirt and foreign matter.
Return-Air Filters — Refer to Replacing Filters section
for filter accessibility and removal. Replace with clean filters of
the sizes listed in Tables 1A-1F.
Chilled Water Coil Freeze Protection — Shut off
water supply to unit. Remove side panel of unit and remove
vent and drain plugs in top and bottom of coil header. Drain
coil and blow out remaining water. Reinstall plugs and side
panel.
Fig. 24 — Fan Pulley Adjustments
Alternative freeze protection methods follow:
•Circulate hot water within the water coil’s supply main
or supplementary space heating.
•Close off supply lines to unit and open a union or fieldsupplied drain valve in the return line.
IMPORTANT: Draining from return line will not completely drain water from coils.
•After draining as much water as possible from coils, add
sufficient antifreeze to prevent residual water in the coil
from freezing.
•Add a sufficient quantity of non-corrosive antifreeze to
the entire system to prevent all water within the system
from freezing.
Coil Removal — Remove unit panels and corner posts as
required. Disconnect coil connections and remove fastening
screws. Remove coil through end or side sections of unit.
Remove any heavy dirt that may have accumulated on underside of coil. Coil can be cleaned more easily with a stiff brush,
vacuum cleaner, or compressed air when coil is dry. If coil is
wet or if water is to be used for cleaning, guard against splashing water on electrical components or damaging surrounding
area. Clean coil baffles as applicable and check for tight fit to
be sure air does not bypass coil.
Cleaning Insulation — The insulation contains an im-
mobilized antimicrobial agent that helps prevent the growth of
bacteria and fungi. Clean the inner surface of the insulation
according to the separate maintenance instructions shipped
with the unit.
27
Replacing Filters — Filters can be removed and in-
stalled from either side of the unit. Install new filters in units
that have one fan as follows:
1. Remove the side access panel (retain screws).
2. Remove the filter retainer clip (see Fig. 25).
3. Remove old filters by lifting and tilting them out of the
filter track. See Fig. 15 and 26.
4. Reverse the procedure to install new filters.
To install new filters in larger units that have 2 fans, follow
the preceding steps, but use the factory-supplied filter hook to
slide filters within reach for removal. The filter hook is shipped
inside the unit in the filter track.
Do not operate unit without air filters.
Fig. 26 — Filter Removal/Replacement
SLIDE
Fig. 25 — Remove Filter Retainer Clip
FILTER
RETAINER
CLIP
28
Table 8A — Fan Motor Data, Standard Motor — English
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
40RM
40RMS
034
208/230-1-60
Speed (rpm)172517251725——————
Hp1.32.42.4——————
Frame (NEMA)56Y56Y56Y——————
Shaft Dia (in.)
5
/
8
5
/
8
5
/
8
——————
208/230-3-60 and 460-3-60
Speed (rpm)172517251725172517251725174517451745
Hp2.42.42.42.42.93.75.07.510.0
Frame (NEMA)56Y56Y56Y56Y56Y56YS184TS213TS215T
Shaft Dia (in.)
5
/
8
5
/
8
5
/
8
5
/
8
7
/
8
7
/
8
11/
8
13/
8
13/
8
575-3-60
Speed (rpm)172517251725172517251725174517551755
Hp1.02.02.02.03.03.05.07.510.0
Frame (NEMA)5656HZ56HZ56HZ56HZ56HZ184TS213TD215T
Shaft Dia (in.)
5
/
8
7
/
8
7
/
8
7
/
8
7
/
8
7
/
8
11/
8
13/
8
13/
8
230-3-50 and 400-3-50
Speed (rpm)142514251425142514251425142514251425
Hp2.42.42.42.92.92.95.07.510.0
Frame (NEMA)56Y56Y56Y56Y56Y56Y184TS213TS215T
Shaft Dia (in.)
5
/
8
5
/
8
5
/
8
7
/
8
7
/
8
7
/
8
11/
8
13/
8
13/
8
LEGEND
NEMA — National Electrical Manufacturers Association
Table 8B — Fan Motor Data, Alternate Motor — English
40RM
UNIT
40RM
007
40RMQ
40RMS
40RMS
010
008
208/230-1-60
Speed (rpm)172517251725—————
Hp2.42.42.4—————
Frame (NEMA)56Y56Y56Y—————
Shaft Dia (in.)
5
/
8
5
/
8
5
/
8
208/230-3-60 and 460-3-60
Speed (rpm)17251725172517251725172517451745
Hp2.92.92.93.73.75.07.510.0
Frame (NEMA)56Y56Y56YY56YY56YS184TS213TS215T
Shaft Dia (in.)
7
/
8
7
/
8
7
/
8
575-3-60
Speed (rpm)17251725172517251745174517551750
Hp2.03.03.03.05.05.07.510.0
Frame (NEMA)56HZ56HZ56HZ56 HZ184T184TS213TD215T
Shaft Dia (in.)
7
/
8
7
/
8
7
/
8
230-3-50 and 400-3-50
Speed (rpm)14251425142514251425142514251425
Hp2.42.92.95.05.05.07.510.0
Frame (NEMA)56Y56Y56YS184TS184TS184TS213TS215T
Shaft Dia (in.)
7
/
8
7
/
8
7
/
8
LEGEND
NEMA — National Electrical Manufacturers Association
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
—————
7
/
8
7
/
8
7
/
8
11/
11/
7
/
8
8
8
11/
11/
11/
8
8
8
13/
13/
13/
8
8
8
13/
13/
13/
8
8
8
29
Table 8C — Fan Motor Data, Standard Motor — SI
40RM
UNIT
208/230-1-60
Speed (r/s)28.7528.7528.75——————
Shaft kW0.971.791.79——————
Frame (NEMA)56Y56Y56Y——————
Shaft Dia (mm)15.915.915.9——————
208/230-3-60 and 460-3-60
Speed (r/s)28.7528.7528.7528.7528.7528.7529.0829.0829.08
Shaft kW1.791.791.791.792.162.763.735.607.46
Frame (NEMA)56Y56Y56Y56Y56Y56YS184TS213TS215T
Shaft Dia (mm)15.915.915.915.922.222.228.634.934.9
575-3-60
Speed (r/s)28.7528.7528.7528.7528.7528.7529.0829.2529.25
Shaft kW0.7461.491.491.492.242.243.735.607. 46
Frame (NEMA)5656HZ56HZ56HZ56HZ56HZ184TS213TS215T
Shaft Dia (mm)15.922.222.222.222.222.228.634.934.9
230-3-50 and 400-3-50
Speed (r/s)23.7523.7523.7523.7523.7523.7523.7523.7523.75
Shaft kW1.791.791.792.162.162.163.735.607.46
Frame (NEMA)56Y56Y56Y56Y56Y56Y184TS213TS215T
Shaft Dia (mm)15.915.915.922.222.222.228.634.934.9
LEGEND
NEMA — National Electrical Manufacturers Association
40RM
007
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
40RM
40RMS
034
Table 8D — Fan Motor Data, Alternate Motor — SI
UNIT
208/230-1-60
Speed (r/s)28.7528.7528.75—————
Shaft kW1.791.791.79—————
Frame (NEMA)56Y56Y56Y—————
Shaft Dia (mm)15.915.915.9—————
208/230-3-60 and 460-3-60
Speed (r/s)28.7528.7528.7528.7528.7529.0829.0829.17
Shaft kW2.162.162.162.762. 763.735.607.46
Frame (NEMA)56Y56Y56YY56YY56YS184TS213TS215T
Shaft Dia (mm)22.222.222.222.222.228.634.934.9
Speed (r/s)23.7523.7523.7523.7523.7523.7523.7523.75
Shaft kW1.792.162.163.733. 733.735.607.46
Frame (NEMA)56Y56Y56YS184TS184TS184TS213TS215T
Shaft Dia (mm)22.222.222.222.228.628.634.934.9
LEGEND
NEMA — National Electrical Manufacturers Association
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
30
Table 9A — Standard Drive Data, 60 Hz — English
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)2.4-3.42.8-3.82.8-3.83.4-4. 42.8-3.82.8-3.83.7-4.74.3-5.34.3-5.3
Pulley Factory Setting
Full Turns Open
2.52.52.52.52.52.53.03.03.0
FAN DRIVE
Pulley Pitch Dia (in.)8.88.88.88.89.09.09.411.011.0
Pulley Bore (in.)11111
7
/
16
17/
16
17/
115/
16
16
Belt No. — Section1—A1—A1—A1—A1—A1—A2—B2—B*2—B*
Belt Pitch (in.)
40.341.341.342.342.342.341.8
(2) 42.8
(2) 43.8
FAN SPEEDS (rpm)
Factory Setting568647647764632632771752752
Range470-666549-745549-745666-863537-728537-728679-863682-841674-831
Max Allowable Speed (rpm)120012001200120012001200120011001100
Change per
Moveable Motor Pulley
1
/2Turn of
19.619.619.619.719.119.115.313.113.1
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)10.44-
555555666
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
9.12-
10.99
6.67-
9.43
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
Table 9B — Medium-Static Drive Data, 60 Hz — English
40RM
40RMS
034
115/
16
(2) 42.8
(2) 43.8
6.67-
9.43
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)3.4-4.43.4-4.43.4-4.43.4-4. 43.4-4.43.7-4.74.3-5.34.3-5.34.3-5.3
Pulley Factory Setting
Full Turns Open
2.52.52.52.52.53.03.03.03.0
FAN DRIVE
Pulley Pitch Dia (in.)8.88.08.08.08.28.69.49.49.4
7
Pulley Bore (in.)11111
/
16
17/
16
17/
115/
16
16
Belt No. — Section1—A1—A1—A1—A1—A1—B1—B2—B*2—B*
Belt Pitch (in.)
42.340.340.340.341.341.841.8
(2) 38.8
(2) 39.8
FAN SPEEDS (rpm)
Factory Setting764841841841820842881881881
Range666-863733-949733-949733-949715-926742-943798-984798-984798-984
Max Allowable Speed (rpm)120012001200120012001200120011001100
Change per
Moveable Motor Pulley
1
/2Turn of
19.721.621.621.621.116.715.315.315.3
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)10.44-
555556666
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
9.16-
10.99
6.67-
9.43
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
40RM
40RMS
034
115/
16
(2) 38.8
(2) 39.8
6.67-
9.43
31
Table 9C — High-Static Drive Data, 60 Hz — English
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)3.4-4.43.4-4.43.4-4.43.4-4.43.7-4.74.3-5.34.3-5.34.3-5.34. 3-5.3
Pulley Factory Setting
Full Turns Open
2.52.52.52.53.03.03.03.03.0
FAN DRIVE
Pulley Pitch Dia (in.)7.06.0*6.06.07.47.97.48.68.6
Pulley Bore (in.)11111
7
/
16
17/
16
17/
115/
16
16
Belt No. — Section1—A1 —A1—A1—A1—B1—B2—B2—B2—B
Belt Pitch (in.)41.337.337.337.339.839.836.837.837.8
Max Allowable Speed (rpm)120012001200120012001200120011001100
Change per
Moveable Motor Pulley
1
/2Turn of
24.628.728.728.719.418.419.416.716.7
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)10.44-
555566666
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32**
9.16-
10.99
8.16-
10.02
6.67-
9.43
*Values f or 3-phase motor shown. For single-phase motor, pulley pitch diameter is 7 in. and result-
ing fan speed is 837-1096 rpm.
†It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed
1200 rpm.
**575-v unit has a center distance of 9.16-10.99.
40RM
40RMS
034
115/
16
873-
1075
6.67-
9.43
Table 9D — Standard Drive Data, 60 Hz — SI
40RM
UNIT
40RM
007
40RMQ
40RMS
008
40RMS
010
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)61.0-
Pulley Factory Setting
Full Turns Open
86.4
2.52.52.52.52.52.53.03.03.0
71.1-
96.5
71.1-
96.5
FAN DRIVE
Pulley Pitch Dia (mm)224224224224229229239279279
Pulley Bore (mm)25.425.425.425.436.536.536.549.249.2
Belt No. — Section1—A1—A1—A1—A1—A1—A2—B2—B*2 —B*
Belt Pitch (mm)
SHAFTS CENTER DISTANCE (mm)265-313 265-313 265-313265-313265-313 265-313232-279169-240169-240
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
40RM
40RMQ
40RMS
012
86.4-
111.8
40RM
40RMS
014
71.1-
96.5
40RM
40RMQ
40RMS
016
71.1-
96.5
40RM
40RMQ
40RMS
024
94.0-
119.4
40RM
40RMQ
40RMS
028
109.2-
134.6
(2) 1087
(2) 1113
40RM
40RMS
034
109.2-
134.6
(2) 1087
(2) 1113
32
Table 9E — Medium-Static Drive Data, 60 Hz — SI
40RM
UNIT
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)86.4-
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)224203203203208218239239239
Pulley Bore (mm)25.425.425.425.436.536.536.549.249.2
Belt No. — Section1—A1—A1—A1—A1—A1—B1—B2—B*2—B*
Belt Pitch (mm)
FAN SPEEDS (r/s)
Factory Setting12.714.014.014.013.714.014.714.714.7
Range11.1-14.4 12.2-15.8 12.2-15.8 12.2-15.8 11.9-15.4 12.4-15.7 13.3-16.4 13.3-16.4 13.3-16.4
Max Allowable Speed (r/s)20.020.020.020.020.020.020.018.318.3
Change per
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (mm)265-313265-31326 5-313265-313265-313265-313232-279169-240169-240
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
1
/2Turn of
40RM
007
111.8
2.52.52.52. 52.53.03.03.03.0
1074102410241024104910621062
0.3280.3600.3600.3600. 3520.2780.2550.2550.255
555556666
40RMQ
40RMS
008
86.4-
111.8
40RMS
010
86.4-
111.8
40RM
40RMQ
40RMS
012
86.4-
111.8
40RM
40RMS
014
86.4-
111.8
40RM
40RMQ
40RMS
016
94.0-
119.4
40RM
40RMQ
40RMS
024
109.2-
134.6
40RM
40RMQ
40RMS
028
109.2-
134.6
(2) 986
(2) 1011
40RM
40RMS
034
109.2-
134.6
(2) 986
(2) 1011
Table 9F — High-Static Drive Data, 60 Hz — SI
UNIT
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)86.4-
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)178152*152152188201188203203
Pulley Bore (mm)25.425.425.425.436.536.536.549.249.2
Belt No. — Section1—A1—A1—A1—A1—B1—B2—B2—B2—B
Belt Pitch (mm)104994794794710111011935935960
Max Allowable Speed (r/s)20.020.020.020.020.020.020.018.318.3
Change per
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (mm)265-313265-313265-313265-313 265-313** 232-279207-255169-240169-240
*Values for 3-phase motor shown. For single-phase motor, pulley pitch diameter is 178 mm and
resulting fan speed is 14.0-18.3 r/s.
†It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed
20 r/s.
**575-v unit has a center distance of 233-279.
1
/2Turn of
40RM
007
111.8
2.52.52.52.53.03.03.03.03.0
18.1
0.4100.4780.4780.4780.3230.3070.3230.2780.278
555566666
40RM
40RMQ
40RMS
008
86.4-
111.8
16.3-
20.0*†
40RMS
010
86.4-
111.8
16.3-
20.0†
40RM
40RMQ
40RMS
012
86.4-
111.8
16.3-
20.0†
40RM
40RMS
014
94.0-
119.4
14.4-
18.3
40RM
40RMQ
40RMS
016
109.2-
134.6
15.8-
19.5
40RM
40RMQ
40RMS
024
109.2-
134.6
16.9-
20.0†
40RM
40RMQ
40RMS
028
109.2
134.6
14.6-
17.9
40RM
40RMS
034
109.2-
134.6
14.6-
17.9
33
Table 10A — Standard Drive Data, 50 Hz — English
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
40RM
40RMS
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)2.4-3.42.8-3.82.8-3.83.4-4.43. 4-4.43.4-4.44. 3-5.34.3-5.34.3-5.3
Pulley Factory Setting
Full Turns Open
2.52.52.52.52.52.53.03.03.0
FAN DRIVE
Pulley Pitch Dia (in.)8.08.08.08.09.09.08.611.011.0
Pulley Bore (in.)11111
7
/
16
17/
16
17/
16
115/
115/
16
Belt No. — Section1—A1—A1—A1—A1—A1—A1—B2— B2—B
Belt Pitch (in.)39.339.339.340.342.342.341.843.843.8
FAN SPEEDS (rpm)
Factory Setting51758 8588695618618795622622
Range428-606499-677449-677606-784538-697538-697713-878557-687557-687
Max Allowable Speed (rpm)120012001200120012001200120011001100
Change per
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)10.44-
1
/2Turn of
17.817.817.817.815.915.913.810.810.8
555555666
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44
12.32-
9.12-
10.99
6.67-
9.43
6.67-
9.43
Table 10B — Medium-Static Drive Data, 50 Hz — English
40RM
UNIT
40RM
007
40RMQ
40RMS
008
40RMS
010
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)3.4-4.43.4-4.43.4-4.43.4-4.43.4-4.43.7-4.74.0-5.04.3-5.34.3-5.3
Pulley Factory Setting
Full Turns Open
2.52.52.52.52.53.02.53.03.0
FAN DRIVE
Pulley Pitch Dia (in.)8.07.07.06.07.57.97.09.49.4
Pulley Bore (in.)11111
Belt No. — Section1—A1—A1—A1—A1—A1—B2—A2—B2—B
Belt Pitch (in.)40.341. 341.337.339.339.836.839.839.8
FAN SPEEDS (rpm)
Factory Setting695794794926741756916728728
Range606-784692-896692-896 808-10 45 646-836667-848 814-1018 652-803652-803
Max Allowable Speed (rpm)120012001200120012001200120011001100
Change per
Moveable Motor Pulley
1
/2Turn of
17.820.420.423.719.015.120.412.612.6
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)10.44-
555556566
12.32
10.44-
12.32
10.44-
12.32
40RM
40RMQ
40RMS
012
10.44-
12.32
40RM
40RMS
014
7
/
16
10.44-
12.32
40RM
40RMQ
40RMS
016
17/
16
9.16-
10.99
40RM
40RMQ
40RMS
024
17/
16
9.16-
10.99
40RM
40RMQ
40RMS
028
115/
16
6.67-
9.43
40RM
40RMS
115/
034
16
034
16
6.67-
9.43
34
Table 10C — High-Static Drive Data, 50 Hz — English
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)3.4-4.43.4-4.43.4-4.44.0-5.03.4-4.44.0-5.04.0-5.04.3-5.34. 3-5.3
Pulley Factory Setting
Full Turns Open
2.52.52.53.02.53.03.03.03.0
FAN DRIVE
Pulley Pitch Dia (in.)6.05.55.55.56.07.06.48.08.6
Pulley Bore (in.)11111
7
/
16
17/
16
17/
115/
16
16
Belt No. — Section1—A1 —A1—A1—A2—A2—A2—A2—B2—B
Belt Pitch (in.)37.337.337.336.336.339.334.336.837.8
Max Allowable Speed (rpm)120012001200120012001200120011001100
Change per
Moveable Motor Pulley
1
/2Turn of
23.725.925.921.623.717.018.514.813.8
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)10.44-
555656666
12.32
10.44-
12.32
10.44-
12.32
9.16-
10.99
9.16-
10.99
9.16-
10.99
8.16-
10.02
6.67-
9.43
*It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT
exceed 1200 rpm.
40RM
40RMS
034
115/
16
713878
6.67-
9.43
Table 10D — Standard Drive Data, 50 Hz — SI
40RM
UNIT
40RM
007
40RMQ
40RMS
008
40RMS
010
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)61.0
Pulley Factory Setting
Full Turns Open
86.4
2.52.52.52.52.52.53.03.03.0
71.1
96.5
71.1-
96.5
FAN DRIVE
Pulley Pitch Dia (mm)203203203203229229218279279
Pulley Bore (mm)25.425.425.425.436.536.536.549.249.2
Belt No. — Section1—A1—A1—A1—A1—A1—A1—B2—B2—B
Belt Pitch (mm)998998998102410741074106211131113
SHAFTS CENTER DISTANCE (mm)265-313265-313265-313265-313265-313265-313232-279169-240169-240
40RM
40RMQ
40RMS
012
86.4-
111.8
40RM
40RMS
014
86.4-
111.8
40RM
40RMQ
40RMS
016
86.4-
111.8
40RM
40RMQ
40RMS
024
109.2
134.6
40RM
40RMQ
40RMS
028
109.2-
134.6
40RM
40RMS
034
109.2-
134.6
35
Table 10E — Medium-Static Drive Data, 50 Hz — SI
40RM
UNIT
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)86.4
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)203178178152191201178239239
Pulley Bore (mm)25.425.425.425.436.536.536.549.249.2
Belt No. — Section1—A1—A1—A1—A1—A1—B2—A2—B2—B
Belt Pitch (mm)102410491049947998101192210111011
FAN SPEEDS (r/s)
Factory Setting11.613.213.215.412.412.615.312.112.1
Range10.1-13.1 11.5-14.9 11.5-14.9 13.5-17.4 10.8-13.9 11.1-14.1 13.6-17.0 10.9-13.4 10.9-13.4
Max Allowable Speed (r/s)20.020.020.020.020.020.020.018.318.3
Change per
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (mm)265-313265-313265-313265-313265-313232-279232-279169-240169-240
1
/2Turn of
40RM
007
111.8
2.52.52.52.52.53.02.53.03.0
0.2970.3400.3400.3950.3170.2520.3400.2100.210
555556566
40RMQ
40RMS
008
86.4-
111.8
40RMS
010
86.4-
111.8
40RM
40RMQ
40RMS
012
86.4-
111.8
40RM
40RMS
014
86.4-
111.8
40RM
40RMQ
40RMS
016
94.0-
119.4
40RM
40RMQ
40RMS
024
101.6-
127.0
40RM
40RMQ
40RMS
028
109.2-
134.6
40RM
40RMS
034
109.2
134.6
Table 10F — High-Static Drive Data, 50 Hz — SI
UNIT
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)86.4-
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (mm)152140140140152178163203218
Pulley Bore (mm)25.425.425.425.436.536.536.549.249.2
Belt No. — Section1—A1—A1—A1—A2—A2—A2—A2—B2—B
Belt Pitch (mm)947947947922922998871935960
Bhp— B rake Horsepower Input to Fan
ESP— External Static Pressure
NOTES:
1. Maximum allowable fan speed is 1100 rpm for unit sizes 028 and
034; 1200 rpm for all other sizes.
2. Fan performance is based on deductions for wet coil, clean 2-in.
filters, and unit casing. See table at right for factory-supplied filter
pressure drop.
3. Refer to fan motor and drive tables for additional data.
FACTORY-SUPPLIED PRESSURE DROP — ENGLISH
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
40RM
40RMS
034
AIRFLOW
(Cfm)
1,8000.05
2,4000.08
3,0000.11
2,250
3,000
3,750
2,5500.09
3,4000.13
4,2500.18
3,000
4,000
5,000
3,7500.06
5,0000.10
6,2500.13
4,500
6,000
7,500
6,000
8,000
10,000
7,500
10,000
12,500
9,0000.19
12,0000.29
15,0000.40
PRESSURE DROP
(in. wg)
0.07
0.11
0.15
0.11
0.17
0.23
0.08
0.12
0.17
0.12
0.19
0.26
0.15
0.22
0.30
Legend and Notes for Tables 11B and 11D
LEGEND
ESP — External Static Pressure
NOTES:
1. Maximum allowable fan speed is 18.3 r/s for unit sizes 028 and
034; 20 r/s for all other sizes.
2. Fan performance is based on deductions for wet coil, clean
51-mm filters, and unit casing. See table at right for factory-supplied filter pressure drop.
3. Refer to fan motor and drive tables for additional data.
FACTORY-SUPPLIED PRESSURE DROP — SI
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMQ
40RMS
024
40RM
40RMQ
40RMS
028
40RM
40RMS
034
AIRFLOW
(L/s)
85013
115020
145028
1000
1400
1800
120021
160032
200045
1450
1900
2350
175015
235024
295033
2100
2800
3500
2900
3800
4700
3500
4700
5900
425047
565071
705098
PRESSURE DROP
(Pa)
17
27
38
28
42
56
20
30
42
32
47
64
36
55
76
45
Copyright 2004 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 3c 2e
PC 111Catalog No. 534-00003Printed in U.S.A.Form 40RM-23SIPg 4612-04Replaces: 40RM-22SI
(SPLIT SYSTEMS WITH 40RM,RMQ,RMS UNITS)
I. PRELIMINARY INFORMATION
START-UP CHECKLIST
OUTDOOR: MODEL NO. _________________________
SERIAL NO. ___________________________________
ADDITIONAL ACCESSORIES ______________________________________________________________________________
INDOOR: MODEL NO. ___________________________
SERIAL NO. ___________________________________
II. PRE-START-UP
OUTDOOR UNIT
IS THERE ANY SHIPPING DAMAGE? _______________(Y/N) ____
IF SO, WHERE: _________________________________________________________________________________________
_______________________________________________________________________________________________________
WILL THIS DAMAGE PREVENT UNIT ST ART-UP? (Y/N) _____
CHECK POWER SUPPLY. DOES IT AGREE WITH UNIT? (Y/N) _____
HAS THE GROUND WIRE BEEN CONNECTED? (Y/N) _____
HAS THE CIRCUIT PROTECTION BEEN SIZED AND INSTALLED PROPERLY? (Y/N) _______
ARE THE POWER WIRES TO THE UNIT SIZED AND INST ALLED PROPERLY? (Y/N) _______
HAVE COMPRESSOR HOLDDOWN BOLTS BEEN LOOSENED? (Y/N) _____
CONTROLS
ARE THERMOSTAT(S) AND INDOOR FAN CONTROL WIRING
CONNECTIONS MADE AND CHECKED? (Y/N) _____
ARE ALL WIRING TERMINALS (including main power supply) TIGHT? (Y/N) _____
HAVE OUTDOOR UNIT CRANKCASE HEA TERS BEEN ENERGIZED FOR 24 HOURS? (Y/N) ______
INDOOR UNIT
HAS WATER BEEN PLACED IN DRAIN PAN TO CONFIRM PROPER DRAINAGE? (Y/N) _____
ARE PROPER AIR FILTERS IN PLACE? (Y/N) ______
HAVE FAN AND MOTOR PULLEYS BEEN CHECKED FOR PROPER ALIGNMENT? (Y/N) ______
DO THE F AN BELTS HAVE PROPER TENSION? (Y/N) ______
PIPING
40RM,RMQ
HAS FOAM SHIPPING BLOCK BEEN REMOVED FROM THE TXV (Thermostatic Expansion Valve)? (Y/N) ______
ARE LIQUID LINE SOLENOID VALVES LOCATED AT THE INDOOR UNIT (40RM) OR OUTDOOR UNIT (40RMQ)
COILS AS REQUIRED?(Y/N) _________________________________________________________________
HAVE LEAK CHECKS BEEN MADE AT COMPRESSORS, CONDENSERS, INDOOR COILS,
TXVs (Thermostatic Expansion Valves) SOLENOID V A LVES, FIL TER DRIERS, AND FUSIBLE PLUGS
WITH A LEAK DETECTOR?(Y/N) _____
LOCATE, REPAIR, AND REPORT ANY LEAKS._______________________________________________________________
HAVE ALL COMPRESSOR SERVICE V ALVES BEEN FULLY OPENED (BACKSEA TED)(Y/N) _____
ARE THE COMPRESSOR OIL SIGHT GLASSES SHOWING CORRECT LEVELS? (Y/N) _____
40RMS
HAS AIR BEEN BLED FROM SYSTEM? (Y/N) _____
HAVE LEAK CHECKS BEEN MADE A T COMPRESSORS, CHILLERS, V ALVES, AND INDOOR COILS?(Y/N) ______
LOCATE, REPAIR, AND REPORT ANY LEAKS. ________________________________________________________________
CL-1
CHECK VOLTAGE IMBALANCE
LINE-TO-LINE VOLTS:AB ________ V AC ______ V BC ______ V
(AB + AC + BC)/3 = AVERAGE VOLTA GE = ________ V
MAXIMUM DEVIA TION FR OM AVERAGE V OLTA GE = ________ V
VOLTA GE IMBALANCE = 100 X (MAX DEVIA TION)/(AVERAGE VOLTA GE) = ___________ %
IF OV ER 2% V O LTAGE IMBA LANC E, DO N OT ATTEMPT TO START SYSTEM!
CALL LOCAL PO WE R COMPANY FOR ASSISTANCE.
III. START-UP
CHECK INDOOR FAN MOT OR SPEED AND RECORD.
AFTER AT LEAST 10 MINUTES RU NNIN G TIME , RECO RD THE FOLL O W ING MEA SURE MEN TS:
COMP A1COMP B1
OIL PRESSURE
SUCTION PRESSURE
SUCTION LINE TEMP
DISCHARGE PRESSURE
DISCHARGE LINE TEMP
ENTERING OUTDOOR UNIT AIR TEMP
LEAVING OUTDOOR UNIT AIR TEMP
INDOOR UNIT ENTERING AIR DB TEMP
INDOOR UNIT ENTERING AIR WB TEMP
INDOOR UNIT LEAVING AIR DB TEMP
INDOOR UNIT LEAVING AIR WB TEMP
OUTDOOR UNIT ENTERING WATER TEMP