Carrier 40RM, 40RMQ, 40RMS User Manual

Packaged Air-Handling Units

Installation, Start-Up and

Service Instructions

40RM

40RMQ

40RMS

50/60 Hz

CONTENTS

Page

SAFETY CONSIDERATIONS ................. 1

PRE-INSTALLATION ........................ 1

Moving and Storage ........................ 1

Rigging .................................... 1

INSTALLATION ........................... 1-23

General .................................... 1

Uncrating .................................. 1

Accessories ................................ 1

Unit Positioning ............................ 11

Unit Isolation .............................. 12

Refrigerant and Chilled Water

Piping Access ............................. 12

Refrigerant Piping .......................... 12

Chilled Water Piping ....................... 17

Condensate Drain .......................... 18

Fan Motors and Drives ..................... 18

Power Supply and Wiring ................... 19

Connecting Ductwork ...................... 22

Return-Air Filters .......................... 22

START-UP ................................. 23

SERVICE ................................. 23-39

Panels ..................................... 23

Fan Motor Lubrication ...................... 23

Fan Shaft Bearings ......................... 23

Centering Fan Wheel ....................... 24

Fan Shaft Position Adjustment .............. 24

Individual Fan Wheel Adjustment ........... 24

Fan Belts .................................. 24

Fan Rotation ............................... 24

Fan Pulley Alignment ....................... 25

Pulley and Drive Adjustment ................ 25

Condensate Drains ......................... 25

Return-Air Filters .......................... 25

Chilled Water Coil Freeze Protection ........ 25

Coil Removal .............................. 25

Cleaning Cooling Coil ...................... 25

Cleaning Insulation ........................ 25

Replacing Filters ........................... 39

START-UP CHECKLIST ................ CL-1,CL-2

SAFETY CONSIDERATIONS

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 111 Catalog No. 534-053 Printed in U.S.A. Form 40RM-9SI Pg 1 11-95 Replaces: 40RM-1SI

Table 1A — 40RM Physical Data, English

UNIT 40RM 007 008 012 014 016 024 028 034

2250­3750

1...11⁄

8

2
2
2
2

1

⁄

2

8

10 121⁄

3000­5000

2...11⁄

8

1...11⁄

2

1...11⁄

2

3750-

6250

2...11⁄

2

15 20 25 30

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 TXV 381 385 405 670 685 690 1020 1030
Plenum 97 97 97 140 140 140 180 180

FANS

Qty...Diam. (in.) 1...15 1...15 1...15 2...15 2...15 2...15 2...18 2...18
Nominal Airflow (cfm) 2400 3000 4000 5000 6000 8,000 10,000 12,000

Airflow Range (cfm)
Nominal Motor Hp (Standard Motor)

208/230-1-60 1.3 2.4 — — — — — —
208/230-3-60 and 460-3-60 2.4 2.4 2.4 2.9 3.7 5.0 7.5 10.0
575-3-60 1.0 2.0 2.0 3.0 3.0 5.0 7.5 10.0
230-3-50, 400-3-50 2.4 2.4 2.9 2.9 2.9 5.0 7.5 10.0

Motor Speed (rpm)

208/230-1-60 1725 1725 — — — — — —
208/230-3-60 and 460-3-60 1725 1725 1725 1725 1725 1745 1745 1745
575-3-60 1725 1725 1725 1725 1725 1745 1755 1755
230-3-50, 400-3-50 1425 1425 1425 1425 1425 1425 1425 1425

REFRIGERANT R-22

Operating charge (lb)
(approx per circuit)*

DIRECT-EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine-Wave Fins

Max Working Pressure (psig) 435
Face Area (sq ft) 6.67 8.33 10.0 13.25 17.67 19.88 24.86 29.83
No. of Splits 112222 2 2
No. of Circuits per Split 12 15 9 9 12 13 15 18
Split Type...Percentage — — Face...50/50
Rows...Fins/in. 3...15 3...15 3...17 3...15 3...15 3...17 3...15 3...15

STEAM COIL

Max Working Pressure (psig at 400 F) 175
Total Face Area (sq ft) 6.67 6.67 6.67 13.33 13.33 13.33 15.0 15.0
Rows...Fins/in. 1...9 1...9 1...9 1...10 1...10 1...10 1...10 1...10

HOT WATER COIL

Max Working Pressure (psig) 150
Total Face Area (sq ft) 6.67 6.67 6.67 13.33 13.33 13.33 15.0 15.0
Rows...Fins/in. 2...8.5 2...8.5 2...8.5 2...8.5 2...8.5 2...8.5 2...12.5 2...12.5
Water Volume

(gal) 8.3 13.9 14.3

3

(ft

) 1.1 1.85 1.90

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

3.0 3.0 1.5/1.5 2.0/2.0 2.5/2.5 3.5/3.5 4.5/4.5 5.0/5.0

1

⁄

8

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.) 4...16 x 24 x 2
Access Location Either Side

LEGEND
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.

8

2

Table 1B — 40RMQ Physical Data, English

UNIT 40RMQ 008 012 016
NOMINAL CAPACITY (Tons) 7
OPERATING WEIGHT (lb)

Base Unit with TXV 385 427 713
Plenum 97 97 140

FANS

Qty...Diam. (in.) 1...15 1...15 2...15
Nominal Airflow (cfm) 3000 4000 6000
Airflow Range (cfm) 2250-3750 3000-5000 4500-7500
Nominal Motor Hp (Standard Motor)

208/230-1-60 2.4 — —
208/230-3-60 and 460-3-60 2.4 2.4 3.7
575-3-60 2.0 2.0 3.0
230-3-50, 400-3-50 2.4 2.9 2.9

Motor Speed (rpm)

208/230-1-60 1725 — —
208/230-3-60 and 460-3-60 1725 1725 1725
575-3-60 1725 1725 1725
230-3-50, 400-3-50 1425 1425 1425

REFRIGERANT R-22

Operating charge (lb)
(approx per circuit)*

DIRECT-EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine-Wave Fins

Max Working Pressure (psig) 435
Face Area (sq ft) 8.33 10.0 17.67
No. of Splits 12 2
No. of Circuits per Split 15 9 16
Split Type...Percentage — Face...50/50
Rows...Fins/in. 3...15 4...15 4...15

STEAM COIL

Max Working Pressure (psig at 400 F) 175
Total Face Area (sq ft) 6.67 6.67 13.33
Rows...Fins/in. 1...9 1...9 1...10

HOT WATER COIL

Max Working Pressure (psig) 150
Total Face Area (sq ft) 6.67 6.67 13.33
Rows...Fins/in. 2...8.5 2...8.5 2...8.5
Water Volume

(gal) 8.3 13.9

3

(ft

) 1.1 1.85

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

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.) 4...16 x 24 x 2
Access Location Either Side

1

⁄

2

10 15

3.0 2.0/2.0 3.0/3.0

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 40RMS 008 010 012 014 016 024 028 034
NOMINAL CAPACITY (Tons) 7
OPERATING WEIGHT (lb)

Base Unit 390 391 391 661 677 683 1035 1042
Plenum 97 97 97 140 140 140 180 180

FANS

Qty...Diam. (in.) 1...15 1...15 1...15 2...15 2...15 2...15 2...18 2...18
Nominal Airflow (cfm) 3000 3400 4000 5000 6000 8000 10,000 12,000
Airflow Range (cfm) 2250-3750 2250-4250 3000-5000 3750-6250 4500-7500 6000-10,000 7500-12,500 9000-15,000
Nominal Motor Hp

(Standard Motor)

208/230-1-60 2.4 2.4 — — — — — —
208/230-3-60 and 460-3-60 2.4 2.4 2.4 2.9 3.7 5.0 7.5 10.0
575-3-60 2.0 2.0 2.0 3.0 3.0 5.0 7.5 10.0
230-3-50 and 400-3-50 2.4 2.4 2.9 2.9 2.9 5.0 7.5 10.0

Motor Speed (rpm)

208/230-1-60 1725 1725 — — — — — —
208/230-3-60 and 460-3-60 1725 1725 1725 1725 1725 1745 1745 1745
575-3-60 1725 1725 1725 1725 1725 1745 1755 1755
230-3-50 and 400-3-50 1425 1425 1425 1425 1425 1425 1425 1425

CHILLED WATER COIL Enhanced Copper Tubes, Aluminum Sine-Wave Fins

Max Working Pressure

(psig)

Face Area (sq ft) — Upper 8.3 9.0 4.9 8.3 8.3 11.0 12.4 15.5
Face Area (sq ft) — Lower — — 4.9 5.5 8.3 8.3 12.4 12.4
Rows...Fins/in. 3...15

STEAM COIL

Max Working Pressure

(psig at 400 F)

Total Face Area (sq ft) 6.67 6.67 6.67 13.33 13.33 13.33 15.0 15.0
Rows...Fins/in. 1...9 1...9 1...9 1...10 1...10 1...10 1...10 1...10

HOT WATER COIL

Max Working Pressure

(in. wg)

Total Face Area (sq ft) 6.67 6.67 6.67 13.33 13.33 13.33 15.0 15.0
Rows...Fins/in. 2...8.5 2...8.5 2...8.5 2...8.5 2...8.5 2...8.5 2...12.5 2...12.5
Water Volume

(gal) 8.3 13.9 14.3

3

(ft

) 1.1 1.85 1.90

PIPING CONNECTIONS,

Quantity...Size (in.)

Chilled Water — In 1...1
Chilled Water — Out 1...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

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.) 4...16 x 24 x 2
Access Location Either Side

1

⁄

2

81⁄

2

10 121⁄

2

15 20 25 30

435

175

150

3

⁄8ODF 1...13⁄8ODF 2...13⁄8ODF 2...13⁄8ODM 2...13⁄8ODM 2...13⁄8ODM 2...21⁄8ODM 2...21⁄8ODM

3

⁄8ODF 1...13⁄8ODF 2...13⁄8ODF 2...13⁄8ODM 2...13⁄8ODM 2...13⁄8ODM 2...21⁄8ODM 2...21⁄8ODM

2
2
2
2

1...11⁄

1...11⁄

2
2

4...16 x 20 x 2

4...16 x 24 x 2

1...21⁄

1...11⁄

2
2

1...2

1...2

4...20 x 24 x 2

4...20 x 25 x 2

4

Table 1D — 40RM Physical Data, SI

UNIT 40RM 007 008 012 014 016 024 028 034
NOMINAL CAPACITY (kW) 21 26 35 43 52 70 87 105
OPERATING WEIGHT (kg)

Base Unit with TXV 173 175 184 304 311 313 463 467
Plenum 44 44 44 63 63 63 82 82

FANS

Qty...Diam. (mm) 1...381 1...381 1...381 2...381 2...381 2...381 2...457 2...457
Nominal Airflow (L/s) 1133 1604 1888 2360 2831 3775 4719 5663
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)

208/230-1-60 0.97 1.79 ——————
208/230-3-60 and 460-3-60 1.79 1.79 1.79 2.16 2.76 3.73 5.60 7.46
575-3-60 0.75 1.49 1.49 2.24 2.24 3.73 5.60 7.46
230-3-50, 400-3-50 1.79 1.79 2.16 2.16 2.16 3.73 5.60 7.46

Motor Speed (r/s)

208/230-1-60 28.8 28.8 ——————
208/230-3-60 and 460-3-60 28.8 28.8 28.8 28.8 28.8 29.1 29.1 29.1
575-3-60 28.8 28.8 28.8 28.8 28.8 29.1 29.3 29.3
230-3-50, 400-3-50 23.8 23.8 23.8 23.8 23.8 23.8 23.8 23.8

REFRIGERANT R-22

Operating charge (kg)
(approx per circuit)*

DIRECT-EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine-Wave Fins

Max Working Pressure (kPag) 2999
Face Area (sq m) 0.62 0.77 0.93 0.93 1.64 1.85 2.30 2.77
No. of Splits 11222222
No. of Circuits per Split 12 15 9 9 12 13 15 18
Split Type...Percentage — — Face...50/50
Rows...Fins/m 3...591 3...591 3...670 3...591 3...591 3...670 3...591 3...591

STEAM COIL

Max Working Pressure (kPag at 204.4 C) 1207
Total Face Area (sq m) 0.62 0.62 0.62 1.24 1.24 1.24 1.39 1.39
Rows...Fins/m 1...355 1...355 1...355 1...394 1...394 1...394 1...394 1...394

HOT WATER COIL

Max Working Pressure (kPag) 1034
Total Face Area (sq m) 0.62 0.62 0.62 1.24 1.24 1.24 1.39 1.39
Rows...Fins/m 2...335 2...335 2...335 2...335 2...335 2...335 2...493 2...493
Water Volume

(L) 31.4 52.6 54.1

3

(m

) 0.031 0.052 0.054

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

FILTERS Throwaway — Factory Supplied

Quantity...Size 4...406 x 610 x 51
Access Location Either Side

LEGEND
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.

1.36 1.36 0.68/0.68 0.90/0.90 1.13/1.13 1.59/1.59 2.04/2.04 2.27/2.27

1

⁄

8

1...11⁄

8

2...11⁄

8

2...11⁄

8

2...11⁄

8

2...11⁄

8

2...13⁄

8

2...13⁄

8

2
2
2

1

⁄

2

1...11⁄

1...11⁄

2
2

4...406 x 508 x 51

4...406 x 610 x 51

2...5⁄

1...21⁄

1...11⁄

8

2
2

1...2

1...2

4...508 x 610 x 51

4...508 x 635 x 51

8

5

Table 1E — 40RMQ Physical Data, SI

UNIT 40RMQ 008 012 016
NOMINAL CAPACITY (kW) 26 35 52
OPERATING WEIGHT (kg)

Base Unit with TXV 175 194 323
Plenum 44 44 63

FANS

Qty...Diam. (mm) 1...381 1...381 2...381
Nominal Airflow (L/s) 1604 1888 2831
Airflow Range (L/s) 1203-2006 1416-2360 2124-3539
Nominal Motor kW (Standard Motor)

208/230-1-60 1.79 — —
208/230-3-60 and 460-3-60 1.79 1.79 2.76
575-3-60 1.49 1.49 2.24
230-3-50, 400-3-50 1.79 2.16 2.16

Motor Speed (r/s)

208/230-1-60 28.8 — —
208/230-3-60 and 460-3-60 28.8 28.8 28.8
575-3-60 28.8 28.8 28.8
230-3-50, 400-3-50 23.8 23.8 23.8

REFRIGERANT R-22

Operating charge (kg)
(approx per circuit)*

DIRECT-EXPANSION COIL

Max Working Pressure (kPag) 2999
Face Area (sq m) 0.77 0.93 1.64
No. of Splits 12 2
No. of Circuits per Split 15 9 16
Split Type...Percentage — Face...50/50
Rows...Fins/m 3...591 4...591 4...591

STEAM COIL

Max Working Pressure (kPag at 204.4 C) 1207
Total Face Area (sq m) 0.62 0.62 1.24
Rows...Fins/m 1...355 1...355 1...394

HOT WATER COIL

Max Working Pressure (kPag) 1034
Total Face Area (sq m) 0.62 0.62 1.24
Rows...Fins/m 2...335 2...335 2...335
Water Volume

(L) 31.4 52.6

3

(m

) 0.031 0.052

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

FILTERS Throwaway — Factory Supplied

Quantity...Size 4...406 x 610 x 51
Access Location Either Side

LEGEND
TXV — Thermostatic Expansion Valve
*Units are shipped without refrigerant charge.

1.36 0.91/0.91 1.36/1.36

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 40RMS 008 010 012 014 016 024 028 034
NOMINAL CAPACITY (kW) 26 29 35 43 52 70 87 105
OPERATING WEIGHT (kg)

Base Unit 177 177 177 300 307 310 469 473
Plenum 44 44 44 63 63 63 82 82

FANS

Qty...Diam. (mm) 1...381 1...381 1...381 2...381 2...381 2...381 2...457 2...457
Nominal Airflow (L/s) 1416 1605 1888 2360 2831 3775 4719 5663

Airflow Range (L/s)
Nominal Motor kW

(Standard Motor)

208/230-1-60 1.79 1.79 — —————
208/230-3-60, 460-3-60 1.79 1.79 1.79 1.79 2.76 3.73 5.60 7.46
575-3-60 1.49 1.49 1.49 1.49 2.24 3.73 5.60 7.46
230-3-50, 400-3-50 1.79 1.79 2.16 2.16 2.16 3.73 5.60 7.46

Motor Speed (r/s)

208/230-1-60 28.8 28.8 — —————
208/230-3-60, 460-3-60 28.8 28.8 28.8 28.8 28.8 29.1 29.1 29.1
575-3-60 28.8 28.8 28.8 28.8 28.8 29.1 29.3 29.3
230-3-50, 400-3-50 23.8 23.8 23.8 23.8 23.8 23.8 23.8 23.8

CHILLED WATER COIL

Max Working Pressure

(kPag)

Face Area (sq m) — Upper 0.77 0.84 0.91 0.77 0.77 1.02 1.15 1.44
Face Area (sq m) — Lower — — — 0.51 0.77 0.77 1.15 1.15
Rows...Fins/m 3...591 3...591 3...591 3...591 3...591 3...591 3...591 3...591

STEAM COIL

Max Working Pressure

(kPag at 204.4 C)

Total Face Area (sq m) 0.62 0.62 0.62 1.24 1.24 1.24 1.39 1.39
Rows...Fins/m 1...355 1...355 1...355 1...355 1...394 1...394 1...394 1...394

HOT WATER COIL

Max Working Pressure

(kPag)

Total Face Area (sq m) 0.62 0.62 0.62 1.24 1.24 1.24 1.39 1.39
Rows...Fins/m 2...335 2...335 2...335 2...335 2...335 2...335 2...493 2...493
Water Volume

(L) 31.4 52.6 54.1

3

(m

) 0.031 0.052 0.054

PIPING CONNECTIONS,

Quantity...Size (in.)

Chilled Water — In 1...1
Chilled Water — Out 1...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

FILTERS Throwaway — Factory Supplied

Quantity...Size (mm) 4...406 x 610 x 51
Access Location Either Side

1062­1770

1204­2006

1416­2360

1770­2949

2124­3539

2831­4719

3539­5899

4247­7079

2999

1207

1034

3

⁄8ODF 1...13⁄8ODF 2...13⁄8ODF 2...13⁄8ODM 2...13⁄8ODM 2...13⁄8ODM 2...21⁄8ODM 2...21⁄8ODM

2
2
2
2

1...11⁄

1...11⁄

2
2

1

⁄4ODM/1 IDF

4...406 x 508 x 51

4...406 x 610 x 51

1...21⁄

1...11⁄

2
2

1...2

1...2

4...508 x 610 x 51

4...508 x 635 x 51

7

TXV — Thermostatic Expansion Valve
NOTES:

1. Dimensions in [ ] are in millimeters.

2. Direction of airflow.

3. Recommended clearance:

• Rear: 3 in. (76 mm )

• Front: 2 ft, 6 in. (762 mm)

• Right Side: 2 ft, 6 in. (762 mm)

• Left Side: 2 ft, 6 in. (762 mm)

• Local codes or jurisdiction may prevail.

4. Liquid piping not supplied by Carrier.

5. Duct flange is factory supplied and field
installed.

6. 40RMS units may require alternate or ad­ditionalfield-fabricated piping access holes.

Fig. 1A — Dimensions — Sizes 007-012

8

UNIT

40RM007 381 (173)
40RM008 385 (175)
40RM012 405 (184)
40RMQ008 385 (175)
40RMQ012 427 (194)
40RMS008 390 (177)
40RMS010 391 (177)
40RMS012 391 (177)

UNIT WEIGHT

lb (kg)

TXV — Thermostatic Expansion Valve

NOTES:

1. Dimensions in [ ] are in millimeters.

2. Direction of airflow.

3. Recommended clearance:

• Rear: 3 in. (76 mm)

• Front: 2 ft, 6 in. (762 mm)

• Right Side: 2 ft, 6 in. (762 mm)

• Left Side: 2 ft, 6 in. (762 mm)

• Local codes or jurisdiction may
prevail.

4. Liquid piping not supplied by Carrier.

5. Duct flange is factory supplied and field
installed.

6. 40RMQ016 and 40RMS units may re­quirealternate or additionalfield-fabricated
piping access holes.

Fig. 1B — Dimensions — Sizes 014-024

9

UNIT

40RM014 670 (304)
40RM016 685 (311)
40RM024 690 (313)
40RMQ016 713 (323)
40RMS014 661 (300)
40RMS016 677 (307)
40RMS024 683 (310)

UNIT WEIGHT

lb (kg)

Fig. 1C — Dimensions — Sizes 028,034

10

UNIT

40RM028 1020 (463)
40RM034 1030 (467)
40RMS028 1035 (469)
40RMS034 1042 (473)

TXV — Thermostatic Expansion Valve

NOTES:

1. Dimensions in [ ] are in millimeters.

2. Direction of airflow.

3. Recommended clearance:

• Rear: 3 in. (76 mm)

• Front: 2 ft, 6 in. (762 mm)

• Right Side: 2 ft, 6 in. (762 mm)

• Left Side: 2 ft, 6 in. (762 mm)

• Local codes or jurisdiction may
prevail.

4. Liquid piping not supplied by Carrier.

5. Duct flange isfactory supplied andfield
installed.

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.

UNIT 007 008 010 012 014 016 024 028 034

40RM XX XXXXXX
40RMQ XXX
40RMS XXXXXXXX

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.

UNIT

40RM007,008
40RMQ008

40RM012-034
40RMQ012

40RMS008-012 4, 5 1
40RMS014-024 4, 5, 6, 7 1
40RMQ016 3*, 5, 6, 7 1
40RMS028,034 5, 6, 7, 8 2

*Must be enlarged from 1
NOTE: Access hole knockouts 1-4 are factory-supplied.

USE HOLE

NUMBERS

1,3———— — — — —

1,2,3,4———— — — — —

1

⁄8in. to 13⁄4inches.

FIELD-FABRICATED HOLE DIAMETERS,

No. 5 No. 6 No. 7 No. 8 A B C D

3

⁄4(44.5) — — — 6.25 (158.8) — — —

3

⁄4(44.5) 13⁄4(44.5) 13⁄4(44.5) — 3.0 (76.2) 6.0 (152.4) 10.5 (266.7) —

1

⁄8(28.6) 11⁄8(28.6) 13⁄4(44.5) — 3.25 (82.6) 6.125 (155.6) 10.38 (263.7) —

1

⁄2(63.5) 21⁄2(63.5) 21⁄2(63.5) 21⁄2(63.5) 6.0 (152.4) 9.625 (244.5) 13.38 (339.9) 17.0 (431.8)

in. (mm)

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.

FIRST ON/LAST OFF=B

VERTICAL INSTALLATION

LEGEND
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.

Fig. 5 — Face-Split Coil Suction and

Liquid Line Piping (Typical)

FIRST ON/LAST OFF=A

HORIZONTAL INSTALLATION

Fig.6—Typical Evaporator Coil Connections

(40RM, 40RMQ)

LEGEND
TXV — Thermostatic Expansion Valve
NOTE: The 8 o’clock position is shown above.

Fig. 7 — TXV Sensing Bulb Location

13

Table 2 — Factory-Installed Nozzle and Distributor Data

UNIT

40RM007 1...XVE-5 1...1116 12 1...E5
40RM008 1...SVE-8 1...1126 15 1...C6
40RMQ008 1...SVE-8 1...1657 15 1...C6
40RM012 2...XVE-4 2...1115 9 2...E4
40RMQ012 2...XVE-4 2...1655 9 2...E4
40RM014 2...XVE-5 2...1115 9 2...E5
40RM016 2...XVE-8 2...1116 12 2...E6
40RMQ016 2...SVE-8 2...1126 16 2...C6
40RM024 2...XVE-10 2...1116 13 2...E8
40RM028 2...EBSVE-11 2...1126 15 2...C10
40RM034 2...SVE-15 2...1126 18 2...C12

* 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

⁄2P504-8084S 2 A

5

⁄8P504-8165S 1 B

1

⁄2P504-8084S 2 A

5

⁄8P504-8085S 2 A

QUANTITY

REQUIRED

REFERENCE

FIGURE

Fig. 8 — Filter Drier Requirements —

38AQS012/40RMQ012 and 38AQS016/40RMQ016

Heat Pump Systems

14