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.
PRE-INSTALLATION
Moving and Storage —
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 wraporskidfrom
unit until final installation.
To transfer unit from truck to
Rigging — All 40RM Series units can be rigged by us-
ing 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 —
service clearanceandairflow.Forunits equipped withan economizer, refer to the accessory installation instructions for additional clearance requirements. Be sure floor, wall, or ceiling can support unit weight (Tables 1A-1F). See
Fig. 1A-1C for dimensions.
Allow 21⁄2ft at front and side of unit for
Uncrating — Move unit as near as possible to final lo-
cation 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.
Accessories — Refer to instructions shipped with each
accessory for specific information.
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. 534-053Printed in U.S.A.Form 40RM-9SIPg 111-95Replaces: 40RM-1SI
Table 1A — 40RM Physical Data, English
UNIT 40RM007008012014016024028034
22503750
1...11⁄
8
2
2
2
2
1
⁄
2
8
10121⁄
30005000
2...11⁄
8
1...11⁄
2
1...11⁄
2
3750-
6250
2...11⁄
2
15202530
45007500
8
2...11⁄
1
⁄4ODM/1 IDF
4...16 x 20 x 2
4...16 x 24 x 2
8
2...5⁄
1...21⁄
1...11⁄
6,000-
10,000
2...11⁄
8
2
2
1...2
1...2
7,500-
12,500
8
2...13⁄
4...20 x 24 x 2
4...20 x 25 x 2
9,000-
15,000
8
2...13⁄
NOMINAL CAPACITY (Tons)67
OPERATING WEIGHT (lb)
Base Unit with TXV38138540567068569010201030
Plenum979797140140140180180
Airflow Range (cfm)
Nominal Motor Hp (Standard Motor)
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)*
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 Splits112222 2 2
No. of Circuits per Split12159912131518
Split Type...Percentage——Face...50/50
Rows...Fins/in.3...153...153...173...153...153...173...153...15
STEAM COIL
Max Working Pressure (psig at 400 F)175
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
(gal)8.313.914.3
3
(ft
)1.11.851.90
PIPING CONNECTIONS,
Quantity...Size (in.)
DX Coil — Suction (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...11⁄
Condensate (PVC)1...1
18003000
3.03.01.5/1.52.0/2.02.5/2.53.5/3.54.5/4.55.0/5.0
1
⁄
8
FILTERSThrowaway — Factory Supplied
Quantity...Size (in.)4...16 x 24 x 2
Access LocationEither Side
LEGEND
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.
8
2
Table 1B — 40RMQ Physical Data, English
UNIT 40RMQ008012016
NOMINAL CAPACITY (Tons)7
OPERATING WEIGHT (lb)
Base Unit with TXV385427713
Plenum9797140
FANS
Qty...Diam. (in.)1...151...152...15
Nominal Airflow (cfm)300040006000
Airflow Range (cfm)2250-37503000-50004500-7500
Nominal Motor Hp (Standard Motor)
208/230-1-602.4——
208/230-3-60 and 460-3-602.42.43.7
575-3-602.02.03.0
230-3-50, 400-3-502.42.92.9
Motor Speed (rpm)
208/230-1-601725——
208/230-3-60 and 460-3-60172517251725
575-3-60172517251725
230-3-50, 400-3-50142514251425
REFRIGERANTR-22
Operating charge (lb)
(approx per circuit)*
DIRECT-EXPANSION COILEnhanced Copper Tubes, Aluminum Sine-Wave Fins
Max Working Pressure (psig)435
Face Area (sq ft)8.3310.017.67
No. of Splits12 2
No. of Circuits per Split15916
Split Type...Percentage—Face...50/50
Rows...Fins/in.3...154...154...15
STEAM COIL
Max Working Pressure (psig at 400 F)175
Total Face Area (sq ft)6.676.6713.33
Rows...Fins/in.1...91...91...10
HOT WATER COIL
Max Working Pressure (psig)150
Total Face Area (sq ft)6.676.6713.33
Rows...Fins/in.2...8.52...8.52...8.5
Water Volume
(gal)8.313.9
3
(ft
)1.11.85
PIPING CONNECTIONS,
Quantity...Size (in.)
DX Coil — Suction (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 (PVC)1...11⁄4ODM/1 IDF
FILTERSThrowaway — Factory Supplied
Quantity...Size (in.)4...16 x 24 x 2
Access LocationEither Side
1
⁄
2
1015
3.02.0/2.03.0/3.0
1
⁄
8
8
2
2
2
1
⁄
2
2...11⁄
2...5⁄
1...11⁄
1...11⁄
8
8
1...21⁄
1...11⁄
2
2
2...11⁄
2...5⁄
2
2
1...2
1...2
4...16 x 20 x 2
4...16 x 24 x 2
8
8
LEGEND
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.
3
Table 1C — 40RMS Physical Data, English
UNIT 40RMS008010012014016024028034
NOMINAL CAPACITY (Tons)7
OPERATING WEIGHT (lb)
Base Unit39039139166167768310351042
Plenum979797140140140180180
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)
Face Area (sq ft) — Upper8.39.04.98.38.311.012.415.5
Face Area (sq ft) — Lower——4.95.58.38.312.412.4
Rows...Fins/in.3...15
STEAM COIL
Max Working Pressure
(psig at 400 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...21⁄
Steam Coil, Out (MPT)1...11⁄
Hot Water Coil, In (MPT)1...11⁄
Hot Water Coil, Out (MPT)1...11⁄
Condensate (PVC)1...11⁄4ODM/1 IDF
FILTERSThrowaway — Factory Supplied
Quantity...Size (in.)4...16 x 24 x 2
Access LocationEither Side
UNIT 40RM007008012014016024028034
NOMINAL CAPACITY (kW)21263543527087105
OPERATING WEIGHT (kg)
Base Unit with TXV173175184304311313463467
Plenum4444446363638282
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 Split12159912131518
Split Type...Percentage——Face...50/50
Rows...Fins/m3...5913...5913...6703...5913...5913...6703...5913...591
STEAM COIL
Max Working Pressure (kPag at 204.4 C)1207
Total Face Area (sq m)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
Total Face Area (sq m)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)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 (PVC)1...11⁄4ODM/1 IDF
FILTERSThrowaway — Factory Supplied
Quantity...Size4...406 x 610 x 51
Access LocationEither Side
LEGEND
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.
UNIT 40RMQ008012016
NOMINAL CAPACITY (kW)263552
OPERATING WEIGHT (kg)
Base Unit with TXV175194323
Plenum444463
FANS
Qty...Diam. (mm)1...3811...3812...381
Nominal Airflow (L/s)160418882831
Airflow Range (L/s)1203-20061416-23602124-3539
Nominal Motor kW (Standard Motor)
208/230-1-601.79——
208/230-3-60 and 460-3-601.791.792.76
575-3-601.491.492.24
230-3-50, 400-3-501.792.162.16
Motor Speed (r/s)
208/230-1-6028.8——
208/230-3-60 and 460-3-6028.828.828.8
575-3-6028.828.828.8
230-3-50, 400-3-5023.823.823.8
REFRIGERANTR-22
Operating charge (kg)
(approx per circuit)*
DIRECT-EXPANSION COIL
Max Working Pressure (kPag)2999
Face Area (sq m)0.770.931.64
No. of Splits122
No. of Circuits per Split15916
Split Type...Percentage—Face...50/50
Rows...Fins/m3...5914...5914...591
STEAM COIL
Max Working Pressure (kPag at 204.4 C)1207
Total Face Area (sq m)0.620.621.24
Rows...Fins/m1...3551...3551...394
HOT WATER COIL
Max Working Pressure (kPag)1034
Total Face Area (sq m)0.620.621.24
Rows...Fins/m2...3352...3352...335
Water Volume
(L)31.452.6
3
(m
)0.0310.052
PIPING CONNECTIONS,
Quantity...Size (in.)
DX Coil — Suction (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...11⁄4ODM/1 IDF
FILTERSThrowaway — Factory Supplied
Quantity...Size4...406 x 610 x 51
Access LocationEither Side
LEGEND
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.
1.360.91/0.911.36/1.36
1
⁄
8
8
2
2
2
1
⁄
2
2...11⁄
2...5⁄
1...11⁄
1...11⁄
8
8
2
2
1...21⁄
1...11⁄
2...11⁄
8
2...5⁄
1...2
1...2
8
2
2
4...406 x 508 x 51
4...406 x 610 x 51
6
Table 1F — 40RMS Physical Data, SI
UNIT 40RMS008010012014016024028034
NOMINAL CAPACITY (kW)26293543527087105
OPERATING WEIGHT (kg)
Base Unit177177177300307310469473
Plenum4444446363638282
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
STEAM COIL
Max Working Pressure
(kPag at 204.4 C)
Total Face Area (sq m)0.620.620.621.241.241.241.391.39
Rows...Fins/m1...3551...3551...3551...3551...3941...3941...3941...394
HOT WATER COIL
Max Working Pressure
(kPag)
Total Face Area (sq m)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 — In1...1
Chilled Water — Out1...13⁄8ODF 1...13⁄8ODF 2...13⁄8ODF 2...13⁄8ODM 2...13⁄8ODM 2...13⁄8ODM 2...21⁄8ODM 2...21⁄8ODM
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...11⁄
Condensate (PVC)1...1
FILTERSThrowaway — Factory Supplied
Quantity...Size (mm)4...406 x 610 x 51
Access LocationEither Side
6. 40RMS units may require alternate or
additional field-fabricated piping access holes.
UNIT WEIGHT
lb (kg)
*YC and WD option codes for all 034 size units and 008, 010 units with 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
40RMQXXX
40RMSXXXXXXXX
Fig. 2 — Model Number Nomenclature
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. 3 for condensate connections for
each unit position.
Typical positioning and alternate return air locations are
shown in Fig. 3.Alternate return air locations can be used by
moving the unit panel from the alternate return air location
to the standard return air location.
IMPORTANT: Do NOT attempt to install unit with
return air entering top panel of unit. Condensate will
not drain from unit.
LEGEND
Accessory Line
Alternate Air Intake and Discharge
Air Intake and Discharge
Fig.3—Typical Unit Positioning
11
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.
Refrigerant and Chilled Water PipingAccess —
The 40RM Series units come with standard knockouts for
refrigerant and chilled water piping. These knockouts are located on both sides of the unit for installation flexibility. The
standard knockouts provide sufficientaccess to the unit’s coils
for all 40RM and some 40RMQ units, however, for40RMQ016
and 40RMS units, additional holes must be field-fabricated
to accommodate the piping. See Fig. 4 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. 4 shows the access holes on the control-box side of
the unit; this is the side of the unit with the coil headers, so
it is used most often for piping access.
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 unit requires additional field-fabricated piping
access holes. See Fig. 4, 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. 5.
Fig. 4 — Refrigerant and Chilled Water Piping Access Holes
12
FIELD-FABRICATED HOLE POSITION
DIMENSIONS, in. (mm)
IMPORTANT: Never attach the sensor to the suction
manifold. Do NOT mount the sensor on a trapped portion of the suction line.
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. 6.
ExternalTXV equalizer connections areprovided and factorybrazed 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. 7.
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 38AQS condensing unit in a heat pump
system, however, some field supplied components may be
required. See the following two sections.
* Feeder tube size is
NOTE: Hot gas bypass applications require field-supplied auxiliary side connector.
1
⁄4in. (6.35 mm).
TXV
Qty...Part No.
DISTRIBUTOR
Qty...Part No.
FEEDER TUBES
PER DISTRIBUTOR*
Qty...Size (in.)
38AQS008/40RMQ008 HEATPUMP SYSTEM PIPING —
Addition of a liquid solenoid valve (LLSV) is recommended
when the piping system length exceeds 75 feet. The LLSV
must be a bi-flow type suited for use in heat pump systems.
The recommended valve is Sporlan model CB14S2 (5/8-in.
ODF, 7/8-in. ODM) available from the Replacement Components Division as part number EF23JS-214. This solenoid
valve requires Sporlan part no. MKC-2 coils that must be
purchased locally. Wire the solenoid valve in parallel with
the compressor contactor coil.
NOZZLE
Qty...Part No.
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.)
FILTER DRIER REQUIREMENTS FOR 38AQS012/
40RMQ012 AND 38AQS016/40RMQ016 HEAT PUMP
SYSTEMS — The 38AQS012 and 016 units do not include filter driers. Filter driers must be field-supplied
and installed in 38AQS012/40RMQ012 and 38AQS016/
40RMQ016 systems. The filter driers used with these systems must be bi-flow types suited for use in heat pump
applications.The Replacement Component Division part numbers listed in Fig. 8 are recommended and available for field
installation.
LEGEND
TXV — Thermostatic Expansion Valve
RECOMMENDED FILTER DRIERS*
(38AQS012,016/40RMQ SYSTEMS)
LIQUID
UNIT
38AQS
012
016
*Available from Carrier Replacement Components Division.
LINE
SIZE
PART NO.
(in.)
1
⁄2P504-8084S2A
5
⁄8P504-8165S1B
1
⁄2P504-8084S2A
5
⁄8P504-8085S2A
QUANTITY
REQUIRED
REFERENCE
FIGURE
Fig. 8 — Filter Drier Requirements —
38AQS012/40RMQ012 and 38AQS016/40RMQ016
Heat Pump Systems
14
Table 3 — Fitting Requirements
UNIT
ACCESS
HOLE NO.*
CONNECTION
TYPE
CIRCUIT
1Suction—
40RM
007
3Liquid—
40RM
40RMQ
008
40RMS
008-012
1Suction—
3Liquid—
4Return—
5Supply—
1SuctionLower(2) 1
2LiquidLower
40RM
012
3LiquidUpper
4SuctionUpper
1SuctionLower(2) 1
2LiquidLower
40RMQ
012
3LiquidUpper
4SuctionUpper
1SuctionLower
2LiquidLower
40RM
014
3LiquidUpper
4SuctionUpper
4SupplyLower
5ReturnLower
40RMS
014-024
6ReturnUpper
7SupplyUpper
*See Fig. 4 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.
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. 4, 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. 9 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.9—Typical 40RMS Chilled Water Piping
17
CondensateDrain— Install a trapped condensate drain
line to unit connection as shown in Fig. 10. The unit drain
connection is a PVC stub. See Fig. 11. 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. 11. 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 pack-
ages are factory installed in all units. The standard motor
and drive packages consist of the following items:
1 — fan motor
1 — adjustable motor pulley
1 — fan pulley
1 —fan belt (40RM007-016, 40RMQ008-016, 40RMS
008-016 units)
2 —matched fan belts (40RM024-034, 40RMS024-034
units)
For instructions on changing fan rotation, changing drive
speeds and adjusting drives, see Pulley and Drive Adjustment in the Service section.
NOTE: Dimensions in [ ] are in millimeters.
Fig. 10 — Condensate Drains
Fig. 11 — Drain Pan Slope Adjustment
18
Power Supply and Wiring — Check the unit data
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 Tables4-6forunit electrical data.
Install disconnect switch and power wiring in accordance
with all applicable local codes. See Fig. 12-14 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 460-v, 3-ph, 60 Hz operation can be field-converted to
1
⁄4-in. ring terminal.
230-v,3-ph, 60 Hz operation. Rewire the motor according to
the diagram plate on the motor.After reconfiguring the motor, place the sticker specifying 230-v operation (supplied in
installation packet) over the 460-v sticker 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. 12 and 13). Wire the thermostat
to the 24-v control circuit terminal block located in the side
of the fan contactor control box, according to Fig. 14 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. 14.
(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 phase imbalance is satisfactory as it is below the
maximum allowable 2%.
AB = 393 v
BC = 403 v
AC = 396 v
Average Voltage =
Minimum
Circuit Amps
= 1.5%
393 + 403 + 396
1192
=
3
= 397
6
397
MOCP
3
21
IMPORTANT:If the supplyvoltage phase imbalanceis more than
2%, contact your local electric utility company immediately.
LEGEND
CB— Circuit Breaker
HC— Heating Contactor
HTR— Electric Heater
IFC— Indoor-Fan Contactor
IFM— Indoor-Fan Motor
NEC— National Electrical Code
TB— Terminal Block
T’STAT — Thermostat
NOTE: Use copper conductors only.
Factory Wiring
Field Control Wiring
→
Fig. 14 — Unit Wiring
Table 6 — Fan Contactor Coil Data
UNIT
40RM, 40RMQ
40RMS
007-0342410
VOLTAGE
(vac)
MAXIMUM
HOLDING
VA
Connecting Ductwork — Refer to the Carrier Sys-
tem Design Manual for the recommended design and layout
of ductwork. Figure 15 shows recommended duct connection to units with 2 fans.
DISCHARGE CONNECTIONS — Duct flanges are 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’sfan deck.
Each fan discharge requires 2 flanges; each flange must be
bent in the middle to conform to the discharge opening. See
Fig. 16. 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 accessoryeconomizer.Refer to economizer Installation Instructions.
Return-Air Filters —Type and size of filters are
shown in Tables 1A-1F and are factory-supplied and 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.
59622
Fig. 15 — Typical Fan Discharge Connections
for Multiple Fan Units
Fig. 16 — Duct Flange Installation
START-UP
Before starting unit, check the following and correct as
necessary:
• 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
in the back 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, con-
densate 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’sorientation. When service is completed, replace unit panels.
Fan Motor Lubrication — Fan motor supplied with
unit is permanently lubricated and requires no further
lubrication.
Fan Shaft Bearings — Bearings on 007-012 size units
are sealed, permanently lubricated bearings that require no
further lubrication. Size 014-034 units have pillow-block bearings (Fig. 17) that must be lubricated with suitable bearing
grease approximately every 3 months. See Table 7 for suitable lubricants.
Table 7 — Lubricant Data
MANUFACTURERLUBRICANT
SunocoPrestige 42
TexacoMultifak 2
TexacoRegal AFB-2*
MobilMobilplex EP No. 2
*Preferred lubricant because it contains rust and oxidation
inhibitors.
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.
Fig. 17 — Fan Shaft, Bearings, and Fan Wheel
(Typical)
23
Centering Fan Wheel — If fan and fan shaft assem-
bly 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.
Individual Fan Wheel Adjustment — Loosen the
2 locking bolts holding fan wheel hub to shaft. See Fig. 17.
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 Shaft Position Adjustment — Loosen set-
screw or locking collar of each fan shaft bearing. Slide shaft
into correct position and replace locking collar (Fig. 18). 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.
Fig. 18 — Fan Shaft Bearing
Fan Belts — Motor mounting plate and motor support
angles 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 is3⁄16-in.
(4.8 mm) For larger motor sizes, correct deflection is1⁄8-in.
(3.2 mm). See Fig. 19.
NOTE: The 028 and 034 size units with 60 Hz motors are
shipped with an extra set of matching 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. 19), move
motor/plate assembly towards fan pulley, and pull belt(s) off
pulleys. Reverse the procedure with new bolts and readjust
deflection.
Fan Rotation — Correct fan rotation with respect to
fan outlet is shown in Fig. 20.
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. 19 — Fan Motor Mounting
24
Fig. 20 — 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. 21 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 8A-10D and adjust fan motor pulley as follows:
1. Remove belt from fan motor pulley after loosening motor from motor base.
2. Loosensetscrew in moveableflange 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. 21).
Fig. 21 — 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 sufficientquantity of non-corrosive antifreeze to the
entire system to prevent all water within the system from
freezing.
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 sec-
tion, page 39, 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.
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.
Cleaning Cooling Coil — Remove return-air filters.
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
immobilized 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.
25
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
40RMS
024
40RM
40RMS
028
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
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
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
NEMA — National Electrical Manufacturers Association
40RM
40RMS
034
13⁄
8
13⁄
8
13⁄
8
Table 8B — Fan Motor Data, Alternate Motor — English
40RM
40RMQ
40RMS
008
40RMS
010
UNIT
40RM
007
208/230-1-60
Speed (rpm)1725———————
Hp2.4———————
Frame (NEMA)56Y———————
Shaft Dia (in.)
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)56HZ56HZ56HZ56HZ184T184TS213TD215T
Shaft Dia (in.)
7
⁄
8
7
⁄
8
7
⁄
8
230-3-50 and 400-3-50
Speed (rpm)—1425142514251425142514251425
Hp—2.92.95.05.05.07.510.0
Frame (NEMA)—56Y56YS184TS184TS184TS213TS215T
Shaft Dia (in.)—
7
⁄
8
7
⁄
8
NEMA — National Electrical Manufacturers Association
40RM
40RMQ
40RMS
012
7
⁄
8
7
⁄
8
7
⁄
8
40RM
40RMS
014
7
⁄
8
11⁄
8
11⁄
8
40RM
40RMQ
40RMS
016
11⁄
8
11⁄
8
11⁄
8
40RM
40RMS
024
13⁄
8
13⁄
8
13⁄
8
40RM
40RMS
028
13⁄
13⁄
13⁄
8
8
8
26
Table 8C — Fan Motor Data, Standard Motor — SI
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
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
40RMS
024
40RM
40RMS
028
40RM
40RMS
034
Table 8D — Fan Motor Data, Alternate Motor — SI
UNIT
208/230-1-60
Speed (r/s)28.75———————
Shaft kW1.79———————
Frame (NEMA)56Y———————
Shaft Dia (mm)15.9———————
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
575-3-60
Speed (r/s)28.7528.7528.7528.7529.0829.0829.2529.17
Shaft kW1.492.242.242.243.733.735.607.46
Frame (NEMA)56HZ56HZ56HZ56HZ184T184TS213TD215T
Shaft Dia (mm)22.222.222.222.228.628.634.934.9
230-3-50 and 400-3-50
Speed (r/s)—23.7523.7523.7523.7523.7523.7523.75
Shaft kW—2.162.163.733.733.735.607.46
Frame (NEMA)—56Y56YS184TS184TS184TS213TS215T
Shaft Dia (mm)—22.222.222.228.628.634.934.9
NEMA — National Electrical Manufacturers Association
Pulley Pitch Dia (in.)8.88.88.88.89.09.09.411.011.0
Pulley Bore (in.)11111
7
⁄1617⁄
16
17⁄
16
115⁄
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
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE
(in.)
1
⁄2Turn of
19.619.619.619.719.119.115.313.113.1
555555666
10.44-
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.
40RM
40RMS
034
115⁄
16
(2) 42.8
(2) 43.8
6.67-
9.43
Table 9B — Medium-Static Drive Data, 60 Hz — English
Pulley Pitch Dia (in.)8.88.08.08.08.28.69.49.49.4
Pulley Bore (in.)11111
Belt No. — Section1—A1—A1—A1—A1—A1—B2—B2—B*2—B*
Belt Pitch (in.)42.340.340.340.341.341.841.8
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
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE
(in.)
1
⁄2Turn of
19.721.621.621.621.116.715.315.315.3
555556666
10.44-
12.32
10.44-
12.32
10.44-
12.32
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
40RM
40RMQ
40RMS
012
10.44-
12.32
40RM
40RMS
014
7
⁄1617⁄
10.44-
12.32
40RM
40RMQ
40RMS
016
16
10.44-
12.32
40RM
40RMS
024
17⁄
16
9.16-
10.99
40RM
40RMS
028
115⁄
16
(2) 38.8
(2) 39.8
6.67-
9.43
40RM
40RMS
034
115⁄
16
(2) 38.8
(2) 39.8
6.67-
9.43
28
Table 9C — High-Static Drive Data, 60 Hz — English
Pulley Pitch Dia (in.)8.08.08.08.09.09.08.611.011.0
Pulley Bore (in.)11111
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 Setting517588588695618618795622622
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.)
1
⁄2Turn of
17.817.817.817.815.915.913.810.810.8
555555666
10.44-
12.32
10.44-
12.32
10.44-
12.32
40RM
40RMQ
40RMS
012
10.44-
12.32
40RM
40RMS
014
7
⁄1617⁄
10.44-
12.32
40RM
40RMQ
40RMS
016
16
10.44-
12.32
40RM
40RMS
024
17⁄
16
9.12-
10.99
40RM
40RMS
028
115⁄
16
6.67-
9.43
40RM
40RMS
034
115⁄
6.67-
9.43
16
29
Table 9E — Medium-Static Drive Data, 50 Hz — English
Pulley Pitch Dia (in.)8.07.07.06.07.57.97.09.49.4
Pulley Bore (in.)111 11
7
⁄1617⁄
16
17⁄
16
115⁄
16
115⁄
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
Range606-784692-896692-896808-1045646-836667-848814-1018652-803652-803
Max Allowable Speed (rpm)120012001200120012001200120011001100
Change per
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE
(in.)
1
⁄2Turn of
17.820.420.423.719.015.120.412.612.6
555556566
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
9.16-
10.99
9.16-
10.99
6.67-
9.43
6.67-
9.43
034
16
Table 9F — High-Static Drive Data, 50 Hz — English
Pulley Pitch Dia (in.)6.05.55.55.56.07.06.48.08.6
Pulley Bore (in.)11111
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
FAN SPEEDS (rpm)
Factory Setting9261010101011669269161002855795
Range
808-
1045
881-
1140
881-
1140
Max Allowable Speed (rpm)120012001200120012001200120011001100
Change per
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE
(in.)
*It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT
exceed 1200 rpm.
1
⁄2Turn of
23.725.925.921.623.717.018.514.813.8
555656666
10.44-
12.32
10.44-
12.32
10.44-
12.32
40RM
40RMQ
40RMS
012
10361200*
916-
10.99
40RM
40RMS
014
7
⁄1617⁄
808-
1045
9.16-
10.99
40RM
40RMQ
40RMS
016
16
814-
1018
9.16-
10.99
40RM
40RMS
024
17⁄
16
891-
1113
8.16-
10.02
40RM
40RMS
028
115⁄
16
766944
6.67-
9.43
40RM
40RMS
034
115⁄
16
713878
6.67-
9.43
30
Table 9G — Standard Drive Data, 60 Hz — SI
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMS
024
40RM
40RMS
028
MOTOR DRIVE
Motor Pulley Pitch Diameter
(mm)
Pulley Factory Setting
Full Turns Open
61.0-
86.4
71.1-
96.5
71.1-
96.5
86.4-
111.8
71.1-
96.5
71.1-
96.5
94.0-
119.4
109.2-
134.6
2.52.52.52.52.52.53.03.03.0
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)1024104910491074107410741062
(2) 1087
(2) 1113
FAN SPEEDS (r/s)
Factory Setting9.510.810.812.710.510.512.912.512.5
Range7.8-11.19.2-12.49.2-12.411.1-14.49.0-12.19.0-12.111.3-14.411.4-14.011.2-13.9
Max Allowable Speed (r/s)20.020.020.020.020.020.020.018.318.3
Change per
*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
12.2-
15.8
40RM
40RMS
014
86.4-
111.8
11.9-
15.4
40RM
40RMQ
40RMS
016
94.0-
119.4
12.4-
15.7
40RM
40RMS
024
109.2-
134.6
13.3-
16.4
40RM
40RMS
028
109.2-
134.6
(2) 986
(2) 1011
13.3-
16.4
40RM
40RMS
034
109.2-
134.6
(2) 986
(2) 1011
13.3-
16.4
31
Table 9I — High-Static Drive Data, 60 Hz — SI
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMS
024
40RM
40RMS
028
MOTOR DRIVE
Motor Pulley Pitch Diameter
(mm)
Pulley Factory Setting
Full Turns Open
86.4-
111.8
86.4-
111.8
86.4-
111.8
86.4-
111.8
94.0-
119.4
109.2
134.6
109.2-
134.6
109.2-
134.6
2.52.52.52.53.03.03.03.03.0
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
FAN SPEEDS (r/s)
Factory Setting16.018.718.718.716.317.718.617.117.1
Range
14.0-
18.1
16.3-
20.0*†
16.3-
20.0†
16.3-
20.0†
14.4-
18.3
15.8-
19.5
16.9-
20.0†
14.6-
17.9
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)
*Valuesfor 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
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
FAN SPEEDS (r/s)
Factory Setting8.69.89.811.610.310.313.310.410.4
Range
7.1-
10.1
8.3-
11.3
8.3-
11.3
Max Allowable Speed (r/s)20.020.020.020.020.020.020.018.318.3
Change per
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
Range
10.1-
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
Max Allowable Speed (r/s)20.020.020.020.020.020.020.018.318.3
Change per
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
FAN SPEEDS (r/s)
Factory Setting15.416.816.819.415.415.316.714.313.3
Range
13.5-
17.4
14.7-
19.0
14.7-
19.0
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)
*It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT
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 ondeductions for wet coil, clean51-mm
filters, and unit casing. See right for factory-supplied filter pressure drop.
3. Refer to fan motor and drive tables for additional data.
Factory-Supplied Filter Pressure Drop — SI
UNIT
40RM
007
40RM
40RMQ
40RMS
008
40RMS
010
40RM
40RMQ
40RMS
012
40RM
40RMS
014
40RM
40RMQ
40RMS
016
40RM
40RMS
024
40RM
40RMS
028
40RM
40RMS
034
AIRFLOW
(L/s)
850
1150
1450
1000
1400
1800
1200
1600
2000
1450
1900
2350
1750
2350
2950
2100
2800
3500
2900
3800
4700
3500
4700
5900
4250
5650
7050
PRESSURE DROP
(Pa)
13
20
28
17
27
38
21
32
45
28
42
56
15
24
33
20
30
42
32
47
64
36
55
76
47
71
98
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.
3. Remove old filters by tilting them and lifting them out of
the filter track. See Fig. 12 and 22.
4. Reverse the procedure to install new filters.
To install new filters in larger units that have 2 fans, fol-
low 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 baserail.
Do not operate unit without air filters.
39
Fig. 22 — Filter Removal/Replacement
Copyright 1995 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. 534-053Printed in U.S.A.Form 40RM-9SIPg 4259611-95Replaces: 40RM-1SI
START-UP CHECKLIST
(SPLIT SYSTEMS WITH 40RM/RMQ/RMS UNITS)
A. Preliminary Information
OUTDOOR: MODEL NO.SERIAL NO.
INDOOR: MODEL NO.SERIAL NO.
ADDITIONAL ACCESSORIES
B. Pre-Start-Up
OUTDOOR UNIT
IS THERE ANY SHIPPING DAMAGE?
IF SO, WHERE:
WILL THIS DAMAGE PREVENT UNIT START-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 INSTALLED PROPERLY?(Y/N)
HAVE COMPRESSOR HOLDDOWN BOLTS BEEN LOOSENED?(Y/N)
(Y/N)
CUT ALONG DOTTED LINECUT ALONG DOTTED LINE
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 HEATERS 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 FAN BELTS HAVE PROPER TENSION?(Y/N)
PIPING
40RM,RMQ
ARE LIQUID LINE SOLENOID VALVES LOCATED AT THE INDOOR UNIT COILS AS REQUIRED?(Y/N)
HAVE LEAK CHECKS BEEN MADE AT COMPRESSORS, CONDENSERS, INDOOR COILS,
WITH A LEAK DETECTOR?(Y/N)
LOCATE, REPAIR, AND REPORT ANY LEAKS.
HAVEALL COMPRESSOR SERVICE VALVES BEEN FULLY OPENED (BACKSEATED)?(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 AT COMPRESSORS, CHILLERS, VALVES, AND INDOOR COILS?(Y/N)
LOCATE, REPAIR, AND REPORT ANY LEAKS.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111Catalog No. 534-053Printed in U.S.A.Form 40RM-9SICL-111-95Replaces: 40RM-1SI
CHECK VOLTAGE IMBALANCE
LINE-TO-LINE VOLTS:AB
(AB + AC + BC)/3 = AVERAGE VOLTAGE =
MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =
VAC VBC V
V
V
VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) =
IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM!
CALL LOCAL POWER COMPANY FOR ASSISTANCE.
C. Start-Up
CHECK EVAPORATOR FAN SPEED AND RECORD.
AFTER AT LEAST 10 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS:
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
(40RMS ONLY)
OUTDOOR UNIT LEAVING WATER TEMP
(40RMS ONLY)
INDOOR UNIT ENTERING WATER TEMP
(40RMS ONLY)
INDOOR UNIT LEAVING WATER TEMP
(40RMS ONLY)
%
COMPRESSOR AMPS (L1/L2/L3)////
CHECK THE COMPRESSOR OIL LEVEL SIGHT GLASSES; ARE THE SIGHT GLASSES SHOWING
OIL LEVEL AT
1
⁄8TO1⁄3FULL?(Y/N)
NOTES:
Copyright 1995 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. 534-053Printed in U.S.A.Form 40RM-9SICL-259611-95Replaces: 40RM-1SI
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