Carrier 42V, 42C, 42D, 42S User Manual

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42C,D,S,V Series

Fan Coil Air Conditioners

Installation, Start-Up and Service

Instructions

CONTENTS

Page

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

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

PRE-INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39

Unpack and Inspect Units . . . . . . . . . . . . . . . . . . . . . . . . 3

Protect Units From Damage . . . . . . . . . . . . . . . . . . . . . . 3

Prepare Jobsite for Unit Installation. . . . . . . . . . . . . . 3

Identify and Prepare Units. . . . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-67

Step 1 — Place Units in Position . . . . . . . . . . . . . . . . 40

• 42C UNITS

• 42V UNITS

• 42D UNITS

• 42S UNITS

Step 2 — Make Piping Connections . . . . . . . . . . . . . 42

• VALVE PACKAGES

• 42C,D,V DRAIN CONNECTIONS

• 42C,D,V WATER SUPPLY/RETURN CONNECTIONS

• 42C,D,V STEAM CONNECTIONS

• 42C,D,V DIRECT EXPANSION (DX) REFRIGERANT PIPING

• TEST AND INSULATE

Step 3 — Make Electrical Connections . . . . . . . . . . 55

• STANDARD WIRING PACKAGES

Step 4 — Make Duct Connections . . . . . . . . . . . . . . . 66

Step 5 — Frame and Finish Unit. . . . . . . . . . . . . . . . . 66

Step 6 — Cut out Openings for Grilles and

Thermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Step 7 — Make Final Preparations. . . . . . . . . . . . . . . 67

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67,68

Excessive Condensation on Unit. . . . . . . . . . . . . . . . 67

To Clean Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Coil Air Vent (Manual or Automatic) . . . . . . . . . . . . . 67

Check Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Fan Motor Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Clean Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Clean Electric Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Clean or Replace Air Filters . . . . . . . . . . . . . . . . . . . . . 68

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

START-UP CHECKLIST FOR 42C,D,S,V SERIES

FAN COIL AIR CONDITIONERS. . . . . . . . CL-1, CL-2

SAFETY CONSIDERATIONS

Installation of this unit can be hazardous due to electrical components and equipment location (such as a ceiling or elevated structure). Only trained, qualified installers and service mechanics should install and service this equipment.

When installing this unit, observe precautions in the literature, labels attached to the equipment, and any other safety precautions that apply.

• Follow all safety codes.

• Wear safety glasses and work gloves.

• Use care in handling and installing this accessory.

WARNING

ELECTRIC SHOCK HAZARD To avoid the possibility of electrical shock, open and tag all service switches before installing this equipment.

INTRODUCTION

This document contains general installation instructions for the 42C,D,S,V unit fan coils. Refer to the unit-wiring diagram installed on the blower housing or specific manufacturer literature for any other type of factory-mounted controls.

See drawings for unit configurations, dimensions, clearances, and pipe connections. Refer to unit wiring label for all electrical connections; follow NEC (National Electrical Code) and local codes.

PHYSICAL DATA

Component weight data, shipping weights, and filter data of the 42C,D,S,V units are provided in Tables 1-4.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53420004-01 Printed in U.S.A. Form 42-3SI Pg 1 12-09 Replaces: 42-2SI

Table 1 — Physical Data — 42C Series Units

NOMINAL AIRFLOW (cfm) 200 300 400 600 800 1000 1200

UNIT SIZE 42C 02 03 04 06 08 10 12

SHIPPING WEIGHT (lb)* 42CA 36 39 49 59 64 95 107 42CE 55 60 70 82 95 135 154 42CF — — 84 97 110 163 — 42CG 98 118 126 168 176 215 245 42CK 115 120 135 150 155 227 241

COIL WATER WEIGHT (Approx lb per row of coil) 42CA, CE, CG, CK 0.7 0.8 1.0 1.4 1.7 2.3 2.7 42CF — — 1.02 1.42 1.71 2.32 —

COILS FPI 10 fins/inch Coil Face Area (sq ft)† 0.8 1.1 1.4 1.9 2.3 3.2 3.7

MOTOR (qty) 42C Series 111 1 122

BLOWER (qty) 42CA, CE, CG, CK 112 2 244 42CF —— 2 2 2 4—

FILTERS Nominal Size (in.) (1-in. thick) 42CA** 10 x 24 10 x 28 10 x 32 10 x 42 10 x 42 10 x 54 10 x 64 42CE†† 10 x 18 10 x 22 10 x 28 10 x 33 10 x 40 10 x 54 10 x 62 42CF††*** ——12 42CG Bottom Return 10 x 23 Rear Return 8 x 23 42CK Bottom Return 10 x 28 10 x 28 10 x 33 10 x 45 10 x 45 10 x 62 10 x 62 Rear Return 7 x 21 7 x 21 7 x 27 7 x 38 7 x 38 7 x 52 7 x 52 Rear Return with Duct Collar 6 x 18 Qty 111 1 111

10 x 28 10 x 321/

8 x 28 8 x 321/

6 x 183/

/4 x 28 123/4 x 33 123/4 x 40 123/4 x 54 —

10 x 37 10 x 41 10 x 541/

8 x 37 8 x 41 8 x 541/

6 x 353/

6 x 493/4 6 x 493/

2 2

6 x 243/

2 2

10 x 63

8 x 63

SUPPLY DUCT COLLAR 1-in. PIPING CONNECTIONS (Sweat) (in.)

Coil Outlet and Inlet Drain Connection Tell-Tale Drain

*Calculate operating weight of unit: shipping weight + coil water weight x

number of coil rows.

†42CF applies to sizes 04 to 10.

**Filter size for return-air grille location.

††Filter size if located in return-air plenum. ***With electric heater and bottom return, the 42CF unit filter width increases

from 12

/8 OD

/4 to 163/4.

Table 2 — Physical Data — 42V Series Units

NOMINAL AIRFLOW (cfm) 150 200 300 400 600 800 1000 1200

UNIT SIZE 42V 01 02 03 04 06 08 10 12

SHIPPING WEIGHT (lb)* 42VA — 65 80 90 112 115 140 170 42VB — 89 95 116 134 137 169 192 42VC — 50 60 72 110 — — — 42VE — 72 100 108 154 — — — 42VF — 92 98 122 141 144 178 205 42VG 40 — 74 — — — — —

COIL WATER WEIGHT (Approx lb per row of coil) 42VA, VB, VC†, VF — 0.7 0.8 1.0 1.4 1.7 2.3 2.7 42VE — 0.9 1.2 1.6 2.3 — — — 42VG 0.4 — 1.0 — — — — —

COILS FPI 12 fins/inch Coil Face Area (sq ft) 0.8 0.8 1.1 1.4 1.9 2.3 3.2 3.7

MOTOR (qty) 42VA, VB, VF —11 1 1122 42VC, VE —1 1 1 2 — — — 42VG 1— 2 — — — — —

BLOWER (qty) 42VA, VB, VF —11 2 2244 42VC, VE —2 2 2 4 — — — 42VG 1— 2 — — — — —

FILTERS Nominal Size (in.) (1-in. thick) 42VA, VB, VF —7 42VC, VE —7 x 21 42VG 10 x 141/ Qty 111 1 1111

/4 x 213/473/4 x 253/473/4 x 313/473/4 x 413/473/4 x 433/473/4 x 573/473/4 x 653/

7 x 263/

— 10 x 28 — — — — —

7 x 343/

7 x 483/

———

SUPPLY DUCT COLLAR 1-in. PIPING CONNECTIONS (Sweat) (in.)

Coil Outlet and Inlet Drain Connection

*Calculate operating weight of unit: shipping weight + coil water weight x

number of coil rows.

†Available in sizes 02-06.

/8 OD

/4 MPT

Table 3 — Physical Data — 42D Series Units

NOMINAL AIRFLOW (cfm) 600 800 1000 1200 1400 1600 1800 2000 SHIPPING WEIGHT (lb)*

42DA 64 79 93 110 119 129 137 155 42DC 94 107 150 169 174 178 195 220 42DD 150 163 176 195 220 235 240 247 42DE 135 155 165 184 199 215 232 243 42DF 157 167 177 199 215 229 249 258

COIL WATER WEIGHT (Approx lb per row of coil)

COILS FPI 10 fins/inch Coil Face Area (sq ft) 1.62.12.53.03.54.14.65.0

MOTOR (qty) 11122222 BLOWER (qty) 11122222 FILTERS

Nominal Size (in.) (1-in. thick) 42DA NA 42DC 14 x 21 14 x 26 14 x 30 14 x 35 14 x 40 14 x 45 14 x 50 14 x 54 42DD

42DE 14 x 143/ 42DF 14 x 14 14 x 20 14 x 24 14 x 28 14 x 34 14 x 38 14 x 44 14 x 48 Qty

SUPPLY DUCT COLLAR 1-in. PIPING CONNECTIONS

(Sweat - 4-Row) Inlet (in. OD) Outlet (in. OD)

*Calculate Operating Weight of unit: Shipping Weight + Coil Water Weight x Number of Coil Rows.

UNIT SIZE 42D 0608101214161820

1.31.61.92.32.73.03.43.7

(Front Return) 12 (Bottom Return) 12

/4 x 21 123/4 x 26 123/4 x 30 123/4 x 35 123/4 x 40 123/4 x 45 123/4 x 50 123/4 x 54

/4 x 21 123/4 x 25 123/4 x 29 123/4 x 34 123/4 x 39 123/4 x 44 123/4 x 49 123/4 x 53

14 x 193/

14 x 233/

14 x 283/

14 x 333/

14 x 383/

14 x 433/

11/

14 x 473/

Table 4 — Physical Data — 42S Series Units

NOMINAL AIRFLOW (cfm) 300 400 600 800 1000 1200 SHIPPING WEIGHT (lb)*

42SG,SU 180 225 240 260 280 305 42SH 202 247 262 286 311 336 42SJ 360 450 480 520 560 610

COIL WATER WEIGHT (Approx lb per row of coil) 1.6 1.6 2.3 2.3 3.1 3.1

COILS FPI 14 fins/inch

MOTOR (qty) 42SG,SH,SU 111111 42SJ 222222

BLOWER (qty) 42SG,SH,SU 111111 42SJ 222222

FILTERS

Qty 1† PIPING CONNECTIONS

Inlet (in. OD)

*Calculate Operating Weight of Unit: Shipping Weight + Coil Water Weight x Number of Coil Rows. †42SJ units require two filters.

UNIT SIZE 42S 03 04 06 08 10 12

Nominal Size (in.) (1-in. thick) 12

/2 x 241/

161/4 x 263/

201/2 x 291/

PRE-INSTALLATION

Unpack and Inspect Units —

from all units. Check the shipment against shipping order. Make sure that furnished only items, such as thermostat, grilles, etc., are accounted for, whether packaged separately or shipped at a later date. If shipment is damaged or incomplete, file claim with transportation company and advise Carrier immediately.

Remove shipping wraps

Protect Units from Damage — The equipment must

always be properly supported. Temporary supports used during installation or service must be adequate to hold the equipment securely. Equipment should always be stored in the proper orientation as marked on the carton. To maintain warranty, protect units against adverse weather, theft, vandalism, and debris on jobsite. Equipment covered in this manual is not suitable for outdoor installations. Do not allow foreign material to fall into drain pan. Prevent dust and debris from being deposited on motor and fan wheels. Manufacturer's warranty is void if foreign

material is allowed to be deposited on the motor or blower wheels of any unit.

Prepare Jobsite for Unit Installation — To sav e

time and to reduce the possibility of costly errors, set up a complete sample installation in a typical room at jobsite. Check all critical dimensions such as pipe, wire, and duct connection requirements. Refer to job drawings and product dimension drawings as required (see Fig. 1-36). Instruct all trades in their part of the installation.

Identify and Prepare Units — Be sure power require-

ments match available power source. Refer to unit nameplate and wiring diagram.

1. Check all tags on unit to determine if shipping screws are to be removed. Remove screws as directed.

2. Rotate the fan wheel by hand to ensure that the fan is unrestricted and can rotate freely. Check for shipping damage and fan obstructions.

LEGEND

1—Junction Box (remote mount) 2—Flexible Metal Conduit 3—Drain Conn,

/8-in. OD

4 — Tell-Tale Drain Conn, 5/8-in. OD (optional) 5—Drip Lip (optional) 6—Hanger Slots (4), Rubber Grommet

has

/8-in. Diameter Hole

7—Supply Duct Collar, 1-in. 8—Air Vent,

/8-in. MPT

9—Return Conn, 5/8-in. OD 10 — Supply Conn,

/8-in. OD

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA (sq ft)

UNIT

WEIGHT*

(lb)

AA’BD’E F GH

Blower Motor

02 200 21

/4311/

16 13 181/

61/

83/

193/

1 1 0.83 36

03 300 25

/4361/

20 14 221/

61/

83/

233/

1 1 1.08 39

04 400 31

/4431/

26 15 281/

61/

83/

293/

2 1 1.35 49

06 600 36

/4431/

31 10 331/

71/

10 343/

2 1 1.88 59

08 800 43

/4571/

38 17 401/

71/

10 413/

2 1 2.31 64

10 1000 57

/4651/

52 11 541/

71/

10 553/

4 2 3.16 95

12 1200 65

/4751/

60 13 621/

71/

10 633/

4 2 3.65 107

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Standard 3-row coil shown.

4. Overall unit dimension increases by 4 in. with optional electric heat.

5. Not shown: 3-speed fan switch; wall plate, closed cell foam on main drain pan.

6. Units have galvanized finish.

7. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

8. Dimensions shown in inches (mm).

Fig. 1 — 42CA Furred-In Horizontal Unit Dimensions

a42-4099.eps

LEGEND

1—Junction Box (remote mount) 2—Flexible Metal Conduit 3 — Strip Heater High Limit 4 — Electric Strip Heater Element 5 — Tell-Tale Drain Conn,

/8-in. OD (optional)

6—Drain Conn, 7/8-in. OD 7—Drip Lip (optional) 8—Supply Duct Collar, 1-in. 9—Air Vent,

/8-in. MPT

10 — Return Conn,

/8-in. OD

11 — Supply Conn,

/8-in. OD

12 — Hanger Slots (4), Rubber Grommet

has

/8-in. Diameter Hole

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Standard 3-row coil shown.

4. Overall unit dimension increases by 4 in. with optional electric heat.

5. Not shown: 3-speed fan switch; wall plate, closed cell foam on main drain pan.

6. Units have galvanized finish.

7. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

8. Dimensions shown in inches (mm).

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA

(sq ft)

UNIT

WEIGHT*

(lb)

AA’BD’E F GH

Blower Motor

02 200 21

/4311/

16 13 181/

61/

83/

193/

1 1 0.83 38

03 300 25

/4361/

20 14 221/

61/

83/

233/

1 1 1.08 41

04 400 31

/4431/

26 15 281/

61/

83/

293/

2 1 1.35 51

06 600 36

/4431/

31 10 331/

71/

10 343/

2 1 1.88 61

08 800 43

/4571/

38 17 401/

71/

10 413/

2 1 2.31 66

10 1000 57

/4651/

52 11 541/

71/

10 553/

4 2 3.16 97

12 1200 65

/4751/

60 13 621/

71/

10 633/

4 2 3.65 109

Fig. 2 — 42CA Furred-In Horizontal Unit with Electric Heat Dimensions

a42-4100.eps

NOTES:

1. Right hand unit with standard 3-row coil shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Standard 3-row coil shown.

4. Unit available with bottom or rear return air.

5. Dimension increases by 4 in. with optional electric heat.

6. Not shown: 3-speed fan switch; wall plate,

/2-in. fiberglass insulation on

inside of plenum, closed cell foam on main drain pan.

7. Units have galvanized finish.

8. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

9. Dimensions shown in inches (mm).

LEGEND

1— Junction Box, 4 in. x 4 in. 2— Flexible Metal Conduit 3— Mounting Bracket 4— Drain Conn,

/8-in. OD

5— Tell-Tale Drain Conn, 5/8-in. OD (optional) 6— Drip Lip (optional, shipped loose) 7— Filter 8— Return Duct Collar, 1-in.

9— Filter Access Panel 10 — Access Panel 11 — Supply Duct Collar, 1-in. 12 — Air Vent,

/8-in. MPT

13 — Return Conn,

/8-in. OD

14 — Supply Conn,

/8-in. OD

15 — Hanger Slots (4), Rubber Grommet has

/8-in. Diameter Hole

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA

(sq ft)

UNIT

WEIGHT*

(lb)

AA’B CD’E FGH

Blower Motor

02 200 21

/4311/

16 181/

13 193/461/

83/

153/

1 1 0.83 55

03 300 25

/4361/

20 221/

14 233/461/

83/

193/

1 1 1.08 60

04 400 31

/4431/

26 281/

15 293/461/

83/

253/

2 1 1.35 70

06 600 36

/4431/

31 331/

10 343/471/

10 303/

2 1 1.88 82

08 800 43

/4571/

38 401/

17 413/471/

10 373/

2 1 2.31 95

10 1000 57

/4651/

52 541/

11 553/471/

10 513/

4 2 3.16 135

12 1200 65

/4751/

60 621/

13 633/471/

10 593/

4 2 3.65 154

a42-4101

Fig. 3 — 42CE Furred-In Horizontal Unit with Plenum Dimensions

NOTES:

1. Right hand unit with standard 3-row coil shown; left hand unit opposite. Coil connection locations are ±5/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Standard 3-row coil shown.

4. Unit available with bottom or rear return air.

5. Dimension increases by 4 in. with optional electric heat.

6. Not shown: 3-speed fan switch; wall plate,

/2-in. fiberglass insulation on

inside of plenum, closed cell foam on main drain pan.

7. Units have galvanized finish.

8. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

9. Dimensions shown in inches (mm).

LEGEND

1— Junction Box, 4 in. x 4 in. 2— Flexible Metal Conduit 3— Mounting Bracket 4— Electric Strip Heater Element 5— Drain Conn,

/8-in. OD

6— Strip Heater High Limit 7— Tell-Tale Drain Conn,

/8-in. OD (optional)

8— Drip Lip (optional, shipped loose)

9— Filter 10 — Return Duct Collar, 1-in. 11 — Filter Access Panel 12 — Access Panel 13 — Supply Duct Collar, 1-in. 14 — Air Vent,

/8-in. MPT

15 — Return Conn,

/8-in. OD

16 — Supply Conn,

/8-in. OD

17 — Hanger Slots (4), Rubber Grommet has

/8-in. Diameter Hole

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA (sq ft)

UNIT

WEIGHT*

(lb)

AA’B CD’E F G H

Blower Motor

02 200 21

/4311/

16 181/

13 193/461/

83/4153/

1 1 0.83 57

03 300 25

/4361/

20 221/

14 233/461/

83/4193/

1 1 1.08 62

04 400 31

/4431/

26 281/

15 293/461/

83/4253/

2 1 1.35 72

06 600 36

/4431/

31 331/

10 343/471/

10 303/

2 1 1.88 84

08 800 43

/4571/

38 401/

17 413/471/

10 373/

2 1 2.31 97

10 1000 57

/4651/

52 541/

11 553/471/

10 513/

4 2 3.16 137

12 1200 65

/4751/

60 621/

13 633/471/

10 593/

4 2 3.65 156

A42-4102

Fig. 4 — 42CE Furred-In Horizontal Unit with Plenum and Electric Heat Dimensions

LEGEND

1— Junction Box, Installed with Plenum 2— Flexible Metal Conduit 3— Insulated Plenum 4— Mounting Bracket 5— Drain Conn,

/8-in. OD

6— Tell-Tale Drain Conn, 5/8-in. OD (optional) 7— Drip Lip (optional, shipped loose) 8— Filter

9— Return Duct Collar, 1-in. 10 — Access Panel 11 — Supply Duct Collar, 1-in. 12 — Supply Conn,

/8-in. OD

13 — Air Vent,

/8-in. MPT

14 — Return Conn,

/8-in. OD

15 — Hanger Slots (4), Rubber Grommet has

/8-in. Diameter Hole

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA

(sq ft)

UNIT

WEIGHT*

(lb)

AA’B CD’E F G H

Blower Motor

04 400 31

/4431/

26 281/

15 293/

61/

83/

301/

2 1 1.35 84

06 600 36

/4431/

34 331/

10 343/

71/

10 351/

2 1 1.88 97

08 800 43

/4571/

38 401/

17 413/

71/

10 421/

2 1 2.31 110

10 1000 57

/4651/

52 541/

11 553/

71/

10 561/

4 2 3.16 163

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 04 thru 08 have one motor, 2 blowers; size 10 has 2 motors, 4 blowers.

3. Refer to above figure for configuration of filter and track if installed in optional plenum.

4. Dimension increases by 4 in. with optional electric heat.

5. Not shown: 3-speed fan switch; wall plate,

/2-in. fiberglass insulation on inside of plenum (when installed), closed cell insulation on main drain pan.

6. Units have galvanized finish.

7. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

8. Dimensions shown in inches (mm).

A42-4103

Fig. 5 — 42CF Furred-In High-Static Horizontal Unit with Plenum Dimensions

LEGEND

1— Junction Box, Installed with Plenum 2— Plenum 3— Flexible Metal Conduit 4— Mounting Bracket 5— Electric Strip Heater Element 6— Drain Conn,

/8-in. OD

7— Drip Lip (optional, shipped loose) 8— Tell-Tale Drain Conn, 5/8-in. OD (optional)

9— Filter 10 — Return Duct Collar, 1-in. 11 — Air Vent,

/8-in. MPT

12 — Access Panel 13 — Return Conn,

/8-in. OD

14 — Supply Conn,

/8-in. OD

15 — Supply Duct Collar, 1-in. 16 — Hanger Slots (4), Rubber Grommet has

/8-in. Diameter Hole

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 04 thru 08 have one motor, 2 blowers; size 10 has 2 motors, 4 blowers.

3. Refer to above figure for configuration of filter and track if installed in optional plenum.

4. Dimension increases by 4 in. with optional electric heat.

5. Not shown: 3-speed fan switch; wall plate,

/2-in. fiberglass insulation on inside of plenum (when installed), closed cell insulation on main drain pan.

6. Units have galvanized finish.

7. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

8. Dimensions shown in inches (mm).

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA (sq ft)

UNIT

WEIGHT*

(lb)

AA’B CD’E F GH

Blower Motor

04 400 31

/4431/

26 281/

15 293/

61/

83/

301/

2 1 1.35 84

06 600 36

/4431/

34 331/

10 343/

71/

10 351/

2 1 1.88 97

08 800 43

/4571/

38 401/

17 413/

71/

10 421/

2 1 2.31 110

10 1000 57

/4651/

52 541/

11 553/

71/

10 561/

4 2 3.16 163

A42-4104

Fig. 6 — 42CF Furred-In Horizontal Unit with Plenum and Electric Heat Dimensions

LEGEND

1— Junction Box, 4 in. x 4 in. 2— Optional Return Air Location 3— Optional Drip Lip, shipped loose 4— Mounting Holes (4), Rubber Grommets

have

/8-in. Diameter Hole

5— Electrical KO, 7/8-in. Diameter 6— Return KO, 1-in. Diameter 7— Supply KO, 1

/2-in. Diameter

8— Drain KO, 11/2-in. Diameter 9— Supply, Return Connections, 5/8-in. OD

10 — Drain Connection,

/8-in. OD

11 — Optional Valve Package (inside cabinet) 12 — Filter 13 — Standard Stamped-Return Air Grille 14 — Removable Hinged Access Panel 15 — Supply Grille, Stamped, Standard

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA (sq ft)

UNIT

WEIGHT*

(lb)

ABCEFG

Blower Motor

02 200 38 17

107/

34 53/

11 1 1 0.83 98

03 300 42 21

101/

38 53/

11 1 1 1.08 118

04 400 48 25

111/

44 53/

11 2 1 1.35 126

06 600 53 34

93/

49 63/

12 2 1 1.88 168

08 800 60 39 10

56 63/

12 2 1 2.31 176

10 1000 74 52

1015/

70 63/

12 4 2 3.16 215

12 1200 82 60

109/

78 63/

12 4 2 3.65 245

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±5/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Cabinet has an Arctic White baked finish.

4. Refer to supply and return connections above for coil stub-out locations.

5. Not shown: optional drip lip, 3-speed fan switch; wall plate,

/2-in. fiber-

glass insulation on inside of casing, closed cell foam on main drain pan.

6. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

7. Valve package is factory-installed inside the cabinet when ordered with the unit (based on component size).

8. Dimensions shown in inches (mm).

A42-4105

Fig. 7 — 42CG Horizontal Cabinet Unit Dimensions

LEGEND

1— Junction Box, 4 in. x 4 in. 2— Optional Stamped Rear Return Grille 3— Optional Drip Lip, shipped loose 4— Electric Strip Heater Element 5— Mounting Holes (4), Rubber Grommets

have

/8-in. Diameter Hole

6— Electrical KO, 7/8-in. Diameter 7— Return KO, 1-in. Diameter 8— Supply KO, 1

/2-in. Diameter

9— Drain KO, 11/2-in. Diameter 10 — Drain Connection, 7/8-in. OD 11 — Optional Valve Package (inside cabinet) 12 — Filter 13 — Standard Stamped-Return Air Grille 14 — Removable Hinged Access Panel 15 — Supply, Return Connections,

/8-in. OD

16 — Supply Grille, Stamped, Standard

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Cabinet has an Arctic White baked finish.

4. Refer to supply and return connections above for coil stub-out locations.

5. Not shown: optional drip lip, 3-speed fan switch; wall plate,

/2-in. fiberglass insulation on inside of casing, closed cell foam

on main drain pan.

6. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

7. Valve package is factory-installed inside the cabinet when ordered with the unit (based on component size).

8. Dimensions shown in inches (mm).

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA (sq ft)

UNIT

WEIGHT*

(lb)

ABCE FG

Blower Motor

02 200 38 17

107/

34 53/

11 1 1 0.83 98

03 300 42 21

101/

38 53/

11 1 1 1.08 118

04 400 48 25

111/

44 53/

11 2 1 1.35 126

06 600 53 34

93/

49 63/

12 2 1 1.88 168

08 800 60 39 10

56 63/

12 2 1 2.31 176

10 1000 74 52

1015/

70 63/

12 4 2 3.16 215

12 1200 82 60

109/

78 63/

12 4 2 3.65 245

A42-4106

Fig. 8 — 42CG Horizontal Cabinet with Electric Heat Dimensions

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

BOTTOM RETURN

FILTER SIZE, (in.)

ABCDEFBlowerMotor

02 200 35 16 12

37 32 6 1 1 10 x 28

03 300 35 20 8

37 32 6 1 1 10 x 28

04 400 41 26 8

43 38 6 2 1 10 x 33

06 600 53 31 15

55 50 7 2 1 10 x 45

08 800 53 38 8

55 50 7 2 1 10 x 45

10 1000 75 52 16

77 72 7 4 2 10 x 62

12 1200 75 60 8

77 72 7 4 2 10 x 62

NOTES:

1. Right hand unit shown; left hand unit opposite.

2. Internal factory valve package and drains may not align with cabinet knockouts.

3. Dimensions shown in inches (mm). All dimensions are ±

/4 in.

4. Bottom panel is Arctic White polyester powder coat paint.

A42-4149

Fig. 9 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel,

Front Supply, and Bottom Return Dimensions

NOTES:

1. Right hand unit shown; left hand unit opposite.

2. Internal factory valve package and drains may not align with cabinet knockouts.

3. Dimensions shown in inches (mm). All dimensions are ±

/4 in.

4. Bottom panel is Arctic White polyester powder coat paint.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

BOTTOM RETURN

FILTER SIZE, (in.)

A B C D E F Blower Motor

02 200 35 16 12

37 32 6 1 1 10 x 28

03 300 35 20 8

37 32 6 1 1 10 x 28

04 400 41 26 8

43 38 6 2 1 10 x 33

06 600 53 31 15

55 50 7 2 1 10 x 45

08 800 53 38 8

55 50 7 2 1 10 x 45

10 1000 75 52 16

77 72 7 4 2 10 x 62

12 1200 75 60 8

77 72 7 4 2 10 x 62

a42-4150

Fig. 10 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel,

Front Supply, Bottom Return, and Heater Dimensions

NOTES:

1. Right hand unit shown; left hand unit opposite.

2. Internal factory valve package and drains may not align with cabinet knockouts.

3. Dimensions shown in inches (mm). All dimensions are ±

/4 in.

4. Bottom panel is Arctic White polyester powder coat paint.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

REAR RETURN

FILTER SIZE, (in.)

ABCDEFBlowerMotor

02 200 35 16 12

37 32 6 1 1 7 x 21

03 300 35 20 8

37 32 6 1 1 7 x 21

04 400 41 26 8

43 38 6 2 1 7 x 27

06 600 43 31 15

55 50 7 2 1 7 x 38

08 800 43 38 8

55 50 7 2 1 7 x 38

10 1000 75 52 16

77 72 7 4 2 7 x 52

12 1200 75 60 8

77 72 7 4 2 7 x 52

a42-4151

Fig. 11 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel,

Front Supply, and Rear Return Dimensions

NOTES:

1. Right hand unit shown; left hand unit opposite.

2. Internal factory valve package and drains may not align with cabinet knockouts.

3. Dimensions shown in inches (mm). All dimensions are ±

/4 in.

4. Bottom panel is Arctic White polyester powder coat paint.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

REAR RETURN

FILTER SIZE, (in.)

ABCDEFBlowerMotor

02 200 35 16 12

37 32 6 1 1 7 x 21

03 300 35 20 8

37 32 6 1 1 7 x 21

04 400 41 26 8

43 38 6 2 1 7 x 27

06 600 43 31 15

55 50 7 2 1 7 x 38

08 800 43 38 8

55 50 7 2 1 7 x 38

10 1000 75 52 16

77 72 7 4 2 7 x 52

12 1200 75 60 8

77 72 7 4 2 7 x 52

a42-4152

Fig. 12 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel,

Front Supply, Rear Return, and Heater Dimensions

LEGEND

1— Junction Box, 4 in. x 4 in. 2— Optional Drip Lip, shipped loose 3— Mounting Holes (4), Rubber Grommets

have

/8-in. Diameter Hole

4— Piping KO, 11/2-in. Diameter 5— Electrical KO,

/8-in. Diameter

6— Drain KO, 11/2-in. Diameter 7— Supply Duct Collar 8— Return Connection,

/8-in. OD.

9— Optional Rear Return. Consult factory for

collar dimensions.

10 — Drain,

/8-in. OD.

11 — Stamped Bottom Return Air Grille 12 — Filter 13 — Stamped Air Supply Grille 14 — Hinged Bottom Access Panel 15 — Supply Connection,

/8-in. OD.

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT

SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

FACE AREA

(sq ft)

UNIT WEIGHT*

(lb)

ADE

Blower Motor

02 200 35 37 32 1 1 0.83 115 03 300 35 37 32 1 1 1.08 120 04 400 41 43 38 2 1 1.35 135 06 600 53 55 50 2 1 1.88 150 08 800 53 55 50 2 1 2.31 155 10 1000 75 77 72 4 2 3.16 227 12 1200 75 77 72 4 2 3.65 241

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±5/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Bottom access panel has an Arctic White baked finish.

4. Refer to supply and return connections above for coil stub-out locations.

5. Not shown: optional drip lip, 3-speed fan switch; wall plate,

/2-in. fiberglass insulation on inside of casing, closed cell foam

on main drain pan.

6. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

7. Valve package is factory-installed inside the cabinet when ordered with the unit (based on component size).

8. Bottom return or bottom supply is an ETO (engineering to order) request.

9. Dimensions shown in inches (mm).

A42-4107

Fig. 13 — 42CK Horizontal Cabinet Unit with Telescopic Access Panel

LEGEND

1— Junction Box, 4 in. x 4 in. 2— Strip Heater High Limit 3— Electric Strip Heater Element 4— Optional Drip Lip, shipped loose 5— Mounting Holes (4), Rubber Grommets

have

/8-in. Diameter Hole

6— Piping KO, 1

/2-in. Diameter

7— Electrical KO, 7/8-in. Diameter 8— Drain KO, 1

/2-in. Diameter

9— Supply Duct Collar

10 — Optional Rear Return. Consult factory for

collar dimensions.

11 — Drain,

/8-in. OD.

12 — Stamped Bottom Return Air Grille 13 — Filter 14 — Stamped Air Supply Grille 15 — Hinged Bottom Access Panel 16 — Supply Connection,

/8-in. OD.

17 — Return Connection, 5/8-in. OD.

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Bottom access panel has an Arctic White baked finish.

4. Refer to supply and return connections above for coil stub-out locations.

5. Not shown: optional drip lip, 3-speed fan switch; wall plate,

/2-in. fiberglass insulation on inside of casing, closed cell foam

on main drain pan.

6. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.

7. Valve package is factory-installed inside the cabinet when ordered with the unit (based on component size).

8. Bottom return or bottom supply is an ETO (engineering to order) request.

9. Dimensions shown in inches (mm).

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

FACE AREA

(sq ft)

UNIT WEIGHT*

(lb)

ADEBlowerMotor

02 200 35 37 32 1 1 0.83 117 03 300 35 37 32 1 1 1.08 122 04 400 41 43 38 2 1 1.35 137 06 600 53 55 50 2 1 1.88 152 08 800 53 55 50 2 1 2.31 157 10 1000 75 77 72 4 2 3.16 229 12 1200 75 77 72 4 2 3.65 243

A42-4108

Fig. 14 — 42CK Horizontal Cabinet with Telescopic Access Panel and Electric Heat Dimensions

LEGEND

1— Optional Unit Mounted Control Box 2— Wall Mounting Holes (4),

/4-in. Diameter

3— Drain, 3/4-in. MPT 4— Drain Pan, Auxiliary, Shipped Loose 5— Supply Conn,

/8-in. OD

6— Return Conn, 5/8-in. OD 7— Filter 8— Air Vent,

/8-in. MPT

9— Discharge Opening 10 — Flexible Conduit 11 — Front Access Panel

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA (sq ft)

UNIT

WEIGHT*

(lb)

ABCD

Blower Motor

02 200 25 22 23

16 1 1 0.83 65

03 300 29 26 27

20 1 1 1.08 80

04 400 35 32 33

26 2 1 1.35 90

06 600 45 42 43

36 2 1 1.88 112

08 800 47 44 45

38 2 1 2.31 115

10 1000 61 58 59

52 4 2 3.16 140

12 1200 69 66 67

60 4 2 3.65 170

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ± 5/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Standard 3-row coil shown.

4. Optional unit-mounted switch box and controls, when specified, are installed on opposite side from cooling connections.

5. Not shown: 3-speed fan switch; wall plate,

/2-in. fiberglass insulation on

inside of casing, closed cell foam on main drain pan.

6. Units have galvanized finish.

7. For optional coil connections, view 42VA-203-1 using the Fan Coil Builder.

8. Dimensions shown in inches (mm).

A42-4109

Fig. 15 — 42VA Furred-In Vertical Unit Dimensions

LEGEND

1— Standard Stamped Supply Grille 2— Access Door, Fan Switch 3— Supply Conn,

/8-in. OD

4— Return Conn, 5/8-in. OD 5— Drain,

/4-in. MPT

6— Filter 7— Air Vent, 1/8-in. MPT 8— Front Panel Fastener 9— Drain Pan, Auxiliary, Shipped Loose

10 — Wall Mounting Holes (4),

/4-in. Diameter

11 — Flexible Conduit 12 — Fan Switch, 3-speed 13 — Front Access Panel

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Standard 3-row coil shown.

4. Cabinet has an Arctic White baked finish.

5. Stamped supply grille standard. Optional single or double deflection grilles available.

6. Not shown:

/2-in. fiberglass insulation on inside of casing, closed

cell foam on main drain pan.

7. For optional coil connections, view 42VA-203-1 using the Fan Coil Builder.

8. Dimensions shown in inches (mm).

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT

SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA

(sq ft)

UNIT

WEIGHT*

(lb)

ABCDE

Blower Motor

02 20041 2223

171/

35/

1 1 0.83 89

03 30045 2627

211/

31/

1 1 1.08 95

04 40051 3233

26 41/

2 1 1.35 116

06 60061 4243

39 23/

2 1 1.88 134

08 80063 4445

39 33/

2 1 2.31 137

10 100077 5859

52 41/

4 2 3.16 169

12 120085 6667

61 33/

4 2 3.65 192

A42-4110

Fig. 16 — 42VB Vertical Cabinet Unit Dimensions

LEGEND

1— Standard Stamped Supply Grille 2— Access Door, Fan Switch 3— Supply Conn,

/8-in. OD

4— Return Conn, 5/8-in. OD 5— Drain,

/4-in. MPT

6— Filter 7— Air Vent, 1/8-in. MPT 8— Front Panel Fastener

9— Optional Valve Package (inside cabinet) 10 — Drain Pan, Auxiliary, Shipped Loose 11 — Wall Mounting Holes

/4-in. Diameter

12 — Flexible Conduit 13 — Fan Switch, 3 speed 14 — Access Doors

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.

3. Standard 3-row coil shown.

4. Cabinet has an Arctic White baked finish.

5. Not shown:

/2-in. fiberglass insulation on inside of casing,

closed cell foam on main drain pan.

6. For optional coil connections, view 42VA-203-1 using the Fan Coil Builder.

7. Valve package is factory-installed inside the cabinet when ordered with the unit (based on component size).

8. Dimensions shown in inches (mm).

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT

SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT FACE

AREA (sq ft)

UNIT

WEIGHT*

(lb)

ABCDE

Blower Motor

02 200 41 22 23

171/

35/

1 1 0.83 92

03 300 45 26 27

211/

31/

1 1 1.08 98

04 400 51 32 33

26 41/

2 1 1.35 122

06 600 61 42 43

39 23/

2 1 1.88 141

08 800 63 44 45

39 33/

2 1 2.31 144

10 1000 77 58 59

521/

41/

4 2 3.16 178

12 1200 85 66 67

61 33/

4 2 3.65 205

A42-4111

Fig. 17 — 42VF Vertical Cabinet Unit with Slant Top Dimensions

LEGEND

1— Optional Unit Mounted Control Box 2— Drain Pan, Auxiliary, Shipped Loose 3— Supply Conn,

/8-in. OD

4— Drain, 3/4-in. MPT 5— Return Conn,

/8-in. OD

6— Air Vent, 1/8-in. MPT 7— Discharge Opening 8— Filter

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

FACE AREA

(sq ft)

UNIT

WEIGHT* (lb)

ABC

Blower Motor

02 200 23 22 17 2 1 1.18 50 03 300 28 27 22 2 1 1.53 60 04 400 36 35 30 2 1 2.08 72 06 600 50 49 44 4 2 3.06 110

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06 has 2 motors, 4 blowers.

3. Standard 2-row coil shown.

4. Optional unit-mounted switch box and controls, when specified, are installed on opposite side from cooling connections.

5. Height increases by 2 in. with electric heat.

6. Not shown: 3-speed fan switch,

/2-in. fiberglass insulation on

inside of casing, closed cell foam on main drain pan.

7. Units have galvanized finish.

8. For optional coil connections, view 42VC-203-1 using the Fan Coil Builder.

9. Dimensions shown in inches (mm).

A42-4112

14-3/8

(368)

Fig. 18 — 42VC Furred-In Lowboy Unit Dimensions

LEGEND

1— Unit-Mounted Control Box (Optional) 2— Drain Pan, Auxiliary, Shipped Loose 3— Air Vent,

/8-in. MPT

4— Supply Conn, 5/8-in. OD 5— Drain,

/4-in. MPT

6— Return Conn, 5/8-in. OD 7— Filter 8— Electrical Sheath Heater Element 9— Discharge Opening

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

FACE AREA

(sq ft)

UNIT

WEIGHT* (lb)

ABC

Blower Motor

02 200 23 22 17 2 1 1.18 50 03 300 28 27 22 2 1 1.53 60 04 400 36 35 30 2 1 2.08 72 06 600 50 49 44 4 2 3.06 110

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06 has 2 motors, 4 blowers.

3. Standard 2-row coil shown.

4. Optional unit-mounted switch box and controls, when specified, are installed on opposite side from cooling connections.

5. Height increases by 2 in. with electric heat.

6. Not shown: 3-speed fan switch,

/2-in. fiberglass insulation on

inside of casing, closed cell foam on main drain pan.

7. Units have galvanized finish.

8. For optional coil connections, view 42VC-203-1 using the Fan Coil Builder.

9. Dimensions shown in inches (mm).

A42-4113

Fig. 19 — 42VC Furred-In Lowboy Unit with Electric Heat Dimensions

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

FACE AREA

(sq ft)

UNIT

WEIGHT*

(lb)

ABDC

Blower Motor

02 200 41

17 2 1 1.18 72

03 300 46

421

2 1 1.53 100

04 400 54

301/

2 1 2.08 108

06 600 68

433/

4 2 3.06 154

LEGEND

1— Fan Switch, 3-Speed, behind Access Door 2— Front Panel Fastener 3— Stamped Supply Grille 4— Supply Conn,

/8-in. OD

5— Return Conn, 5/8-in. OD 6— Stamped Return Grille 7— Filter 8— Air Vent,

/8-in. MPT

9— Optional Valve Package (inside cabinet)

10 — Drain Pan, Auxiliary, with

/4-in. MPT

Drain Connection

11 — Return Air Grille

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06 has 2 motors, 4 blowers.

3. Cabinet has an Arctic White baked finish.

4. Height increases by 2 in. with electric heat.

5. Standard 2-row coil shown.

6. Not shown:

/2-in. fiberglass insulation on inside of casing,

closed cell foam on main drain pan.

7. For optional coil connections, view 42VC-203-1 using the Fan Coil Builder.

8. Valve package is factory-installed inside the cabinet when ordered with the unit (based on component size).

9. Dimensions shown in inches (mm).

A42-4114

14-3/8

(368)

Fig. 20 — 42VE Cabinet Lowboy Unit Dimensions

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT

FACE AREA

(sq ft)

UNIT

WEIGHT*

(lb)

ABCD

Blower Motor

02 200 41 22 3

17 2 1 1.18 72

03 300 46 27 4 21

2 1 1.53 100

04 400 54 35 3

301/

2 1 2.08 108

06 600 68 49 4

433/

4 2 3.06 154

LEGEND

1— Fan Switch, 3-Speed, behind Access Door 2— Electrical Sheath Heater Element 3— Stamped Supply Grille 4— Supply Conn,

/8-in. OD

5— Return Conn,

/8-in. OD

6— Stamped Return Grille 7— Filter 8— Air Vent,

/8-in. MPT

9— Front Panel Fastener 10 — Optional Valve Package (inside cabinet) 11 — Drain Pan, Auxiliary, with

/4-in. MPT

Drain Connection

12 — Return Air Grille

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06 has 2 motors, 4 blowers.

3. Cabinet has an Arctic White baked finish.

4. Height increases by 2 in. with electric heat.

5. Standard 2-row coil shown.

6. Not shown:

/2-in. fiberglass insulation on inside of casing,

closed cell foam on main drain pan.

7. For optional coil connections, view 42VC-203-1 using the Fan Coil Builder.

8. Valve package is factory-installed inside the cabinet when ordered with the unit (based on component size).

9. Dimensions shown in inches (mm).

A42-4115

Fig. 21 — 42VE Cabinet Lowboy Unit with Electric Heat Dimensions

LEGEND

1— Supply Conn,

/8-in. OD

2— Air Vent,

/8-in. MPT

3— Filter 4— Return Air Grille, Stamped 5— Stamped Supply Grille 6— Return Conn,

/8-in. OD

7— Removable Front Panel 8— Drain Conn,

/8-in. OD

9— Auxiliary Drain Pan 10 — Valve Compartment 11 — Junction Box

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8-in.

2. Front panel has an Arctic White baked finish.

3. Standard 2-row coil shown.

4. Unit size 01 has one motor, one blower; size 03 has 2 motors, 2 blowers.

5. Unit has

/2-in. flanges for mounting to wall surface.

6. Front panel hooks at top of unit, swing down and snap in at bottom against a spring clip.

7. Not shown: 3-speed fan switch, wall plate,

/2-in. fiberglass insula-

tion on inside of casing, closed cell foam on main drain pan.

8. Dimensions shown in inches (mm).

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(Cfm)

DIMENSIONS (in.) QTY/UNIT UNIT

WEIGHT*

(lb)

ABCDE

Blower Motor

01 150 25

153/

14 11/

123/

1140

03 300 39

293/

28 115/

257/

2274

A42-4116

Fig. 22 — 42VG Furred-In Wall Unit Dimensions

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components. NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8 inches.

2. Sizes 06, 08 and 10 have one motor, one blower; sizes 12 through 20 have 2 motors, 2 blowers.

3. Standard 4-row coil shown. Other coil option dimensional data available on request.

4. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.

5. Fan switch, wall plate not shown.

6. Galvanized finish provided as standard.

7. Dimensions are in inches (mm).

UNIT

SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in. ±

/8) QTY/UNIT

UNIT

WEIGHT*

(lb)

A A’ B D’ E H Blower Motor

06 600 23 32 14 13

/217 181/

11 64

08 800 28 37 19 13

/222 231/

11 79

10 1000 32 42 23 14

/226 271/

11 90

12 1200 37 47 28 14

/231 321/

2 2 108

14 1400 42 52 33 14

/236 371/

2 2 119

16 1600 47 56 38 13

/241 421/

2 2 124

18 1800 52 62 43 14

/246 471/

2 2 141

20 2000 56 66 47 14

/250 511/

2 2 151

LEGEND

1— Motor Junction Box 2— Motor-Blower Assembly 3— Electric Strip Heater Element (optional) 4— Auxiliary Drip Lip (Optional, Shipped Loose) 5— Tell-Tale Drain (optional) 6— Drain Connection,

/8-in. OD

7— Air Vent, 1/8-in. MPT 8— Supply Connection

9— Supply Duct Collar, 1 inch 10 — Return Connection 11 — Mounting Holes (four,

/4-in. diameter) have

Rubber Grommets with

/8-in. holes.

a42-4120

Fig. 23 — 42DA Furred-In Ceiling Unit with Electric Heat Dimensions

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8 inches.

2. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.

3. Filter and filter rack are standard.

4. Standard 4-row coil shown. Other coil option dimensional data available on request.

5. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.

6. Fan switch, wall plate not shown.

7. Galvanized finish provided as standard.

8. Dimensions are in inches (mm).

UNIT SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in. ±

/8) QTY/UNIT

UNIT

WEIGHT*

(lb)

A A’ B D’ E F G H Blower Motor

06 600 23 32 14 13

/217 21 251/4181/

11 94

08 800 28 37 19 13

/222 26 301/4231/

1 1 107

10 1000 32 42 23 14

/226 30 341/4271/

1 1 150

12 1200 37 47 28 14

/231 35 391/4321/

2 2 169

14 1400 42 52 33 14

/236 40 441/4371/

2 2 174

16 1600 47 56 38 13

/241 45 491/4421/

2 2 178

18 1800 52 62 43 14

/246 50 541/4471/

2 2 195

20 2000 56 66 47 14

/250 54 581/4511/

2 2 220

LEGEND

1— Motor Junction Box Opposite Piping 2— Insulated Return Air Plenum 3— Mounting Clips (Shipped Loose) 4— Electrical Strip Heater Element (optional) 5— Auxiliary Drip Lip (Shipped Loose) with

/8-in.

Hole

6— Tell-Tale Drain (optional) 7— Drain Connection,

/8-in. OD

8— Filter Retainer Angle 9— Access Panel

10 — Return Duct Collar, 2

/2 inches

11 — Air Vent,

/8-in. MPT

12 — Return Connection 13 — Filter, 1-in. 14 — Supply Duct Collar, 1 inch 15 — Supply Connection 16 — Mounting Holes (four,

/4-in. diameter) with

Rubber Grommet

A42-4121

Fig. 24 — 42DC Furred-In Ceiling Unit with Plenum and Electric Heat Dimensions

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components. NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are ±

/8 inches.

2. Standard 4-row coil shown. Other coil option dimensional data available on request.

3. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.

4. Supply and return connections terminate within unit when valves are factory installed.

5. For optional coil connections, view 42DD-203-1 using the Fan Coil Builder.

6. Fan switch and wall plate are not shown.

7. Galvanized finish provided as standard.

8. Units with internal factory valve packages have external connections located in triangular section above coil.

9. Consult Carrier for ducted front return air and external filter rack with 1-in. duct collar and throwaway filters.

10. Units with electric heat require additional access on the side of unit for servicing contactor box.

11. With bottom return, access to filter is through the front access panel.

12. Dimensions are in inches (mm).

UNIT

SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in. ±

/8) QTY/UNIT UNIT

WEIGHT*

(lb)

ABC

Blower Motor

06 600 232115 1 1135 08 800 282620 1 1145 10 1000 32 30 24 1 1 155 12 1200 37 35 29 2 2 180 14 1400 42 40 34 2 2 190 16 1600 47 45 39 2 2 200 18 1800 52 50 44 2 2 215 20 2000 56 54 48 2 2 230

LEGEND

1— Motor Junction Box 2— Air Vent,

/8-in. MPT

3— Return Connection 4— Optional 6-in. Legs 5— Bottom Return (optional) 6— Return Air Opening 7— Supply Connection 8— Drain Connection,

/8-in. OD

9— Front Access Panel 10 — Filter, Throwaway 11 — Electric Strip Heater Element (optional) 12 — Supply Duct Connection, 1-in.

A42-4122

Fig. 25 — 42DD Vertical Unit with Full Casing and Electric Heat Dimensions

SEE NOTE 8

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

NOTES:

1. Right hand unit shown; left hand unit opposite.

2. Coil stub-out location data available on request.

3. Unit fabricated of galvanized steel.

4. Internal parts fabricated of galvanized steel.

5. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.

6. Units must have drain line pitched and trapped externally.

7. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.

8. Fan switch, wall plate not shown.

9. Galvanized finished provided as standard.

10. Dimensions are in inches (mm).

UNIT SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in. ±

/8) QTY/UNIT UNIT

WEIGHT*

(lb)

ABCD

Blower Motor

06 600 31 15 15 26 1 1 150 08 800 36 20 20 31 1 1 160 10 1000 40 24 24 35 1 1 170 12 1200 45 29 29 40 2 2 195 14 1400 50 34 34 45 2 2 205 16 1600 55 39 39 50 2 2 215 18 1800 60 44 44 55 2 2 230 20 2000 64 48 48 59 2 2 235

LEGEND

1— Motor Junction Box 2— Unit Mounting Channel (2), 14-gage; 4 Mounting

Slots,

/2-in. x 2-in.

3— Auxiliary Drip Lip (optional, shipped loose) 4— Side Access Panels 5— Electrical Strip Heater Element (optional) 6— Supply Air Duct Connection, 1 in. 7— Manual Air Vent 8— Filter, Throwaway, 1-in. 9— Return Air Duct Connection, 2

/2 in.

10 — Drain,

/8-in. OD

11 — Bottom Access Panel 12 — Drain Pan 13 — Coil Inlet, Copper Sweat Connection 14 — Coil Outlet, Copper Sweat Connection

A42-4123

Fig. 26 — 42DE Ceiling Unit with Full Casing and Electric Heat Dimensions

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components. NOTES:

1. Right hand unit shown; left hand unit opposite.

2. Coil stub-out connection data available on request.

3. Units fabricated of galvanized steel with an Arctic White baked finish.

4. Internal parts fabricated of galvanized steel.

5. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.

6. Units must have drain line pitched and trapped externally.

7. Stamped supply and return grilles are not available.

8. Bottom return air is not available.

9. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.

10. Fan switch and wall plate are not shown.

11. Dimensions are in inches (mm).

UNIT

SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in. ±

/8) QTY/UNIT UNIT

WEIGHT*

(lb)

A B C D E Blower Motor

06 600 31 13

/214 26 81/

11150

08 800 36 18

/220 31 8 1 1 160

10 1000 40 22

/224 35 8 1 1 170

12 1200 45 27

/228 40 81/

22195

14 1400 50 32

/234 45 8 2 2 205

16 1600 55 37

/238 50 81/

22215

18 1800 60 42

/244 55 8 2 2 230

20 2000 64 46

/248 59 8 2 2 235

LEGEND

1—Junction Box 2—Return Air Grille, Hinged, Bar Type, with Filter

Frame (Anodized Aluminum Only)

3—Unit Mounting Channel (2), 14-gage; 4 Mounting

Slots,

/2 in. x 2-in.

4—Auxiliary Drip Lip 5—Electric Strip Heater Element (optional) 6—Coil Inlet, Copper Sweat Connection 7—Coil Outlet, Copper Sweat Connection 8—Manual Air Vent 9—Filter, Throwaway 10— Bottom Access Panel 11— Drain,

/8-in. OD

12— Drain Pan Insulated with Styrofoam 13— Side Access Panel (2) 14— Supply Air Grille (Double Deflection)

A42-4124

Fig. 27 — 42DF Exposed Ceiling Unit with Supply and Return Grille and Electric Heat Dimensions

*Drawing provided for reference only. Dimensions may vary with options ordered. NOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.

2. All risers are insulated with

/2-in. closed cell insulation.

3. Thermostats shipped loose for field connection.

4. Risers are piped to coil with valves as specified.

5. Blower, motor, valves, coil, and filter are accessible through the return air opening.

6. Unit and control box are insulated with 1/2-in. coated fiberglass insulation.

7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.

8. Maximum riser size is 21/2-in. diameter. If larger sizes are required, please consult the factory.

9. Expansion loops in hot water heating circuits as required.

10. A 9-in. x 21/4-in. slot is provided in the inside back panel for coil connection penetration to permit expansion and contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.

11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).

12. All dimensions are in inches.

†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in.)

UNIT

WEIGHT†

(lb)

Single Supply Double Supply Top Supply

EGH I

AB A BCD

03 300 14 8 14 6 14 10 17 1

/211/214 180

04 400 14 12 14 6 14 10 17 11/211/214 225

06 600 18 10 18 6 16 12 20 1 2 18 240

08 800 18 12 18 6 16 12 20 1 2 18 260

10 1000 — — 22 8 18 16 24 1 3 22 280

12 1200 — — 22 8 18 16 24 1 3 22 305

A42-4125

LEGEND

CR — Cold Water Return CS — Cold Water Supply D— Drain HR — Hot Water Return HS — Hot Water Supply R— Return S—Supply

**Factory-Installed.

††Field-Installed.

ITEM DESCRIPTION QTY

1 Electrical Knockouts 1 2 3-in. Expanded Section 3/5 3 Strip Heater (Optional) 1 4 Limit Switch**†† (Optional) 1 5

/2-in. Isolation Ball Valves**

2/4

6 Flexible Drain Tube/P-Trap 1 7 Coil

/2-in. OD Copper Tube

8 Filter, Throwaway, 1-in.** 1

9 Return Air Opening 1 10 Air Vent, Manual 1 11 Molex Connector for Field-Installed Stat 1 12 Control Box 1 13 Knockout (For Optional Remote Mounting) 2 14 Riser, Supply and Return (Copper) 2/4 15 Riser, Drain (Copper) 1 16 Drain Pan 1 17 Return Air Blockoff Panel (Optional) 1 18 Blower 1 19 Motor, 3-Speed, PSC, with Quick Connect 1 20 Access Panel (Control Box) 1 21 Control Opening (Surface Mount Stat) 1 22 Duct Collar, 1/2-in. Extension (Typical)

1/2/3

23 Supply Air Opening(s) 1/2/3

Fig. 28 — 42SG Furred-In Stack Dimensions

†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT

SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in.)

UNIT

WEIGHT†

(lb)

Single Supply Double Supply

CDE FG

ABAB

03 300 14 8 14 6 17 223/811/2221/8143/

202

04 400 14 12 14 8 17 223/811/2221/8143/

247

06 600 14 12 14 8 20 25

/82265/8173/

262

08 800 14 16 14 10 20 25

/82265/8173/

286

10 1000 18 16 14 12 24 293/83311/8173/

311

12 1200 18 16 14 12 24 29

/83311/8173/

336

*Drawing provided for reference only. Dimensions may vary with options ordered. NOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck, painted with Arctic White.

2. 3-speed switch and thermostat are unit mounted.

3. Risers are piped to coil with valves as specified.

4. Blower, motor, valves, coil, and filter are accessible through the return air opening.

5. Unit is insulated with coated fiberglass.

6. Control box is insulated with 1/2-in. insulation for unit mounted controls.

7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.

8. Maximum riser size is 21/2-in. diameter. If larger sizes are required, please consult the factory.

9. Expansion loops in hot water heating circuits as required.

10. A 9-in. x 2

/4-in. slot is provided in the inside back panel for coil connection penetration to permit expansion and

contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.

11. Drawing is pictorial (see unit arrangements for actual supply and retur n air orientation).

12. 42SHA available in front return only.

13. All dimensions are in inches.

A42-4126

**Factory-Installed.

††Field-Installed.

ITEM DESCRIPTION QTY

1 Full Riser Chase

2 Electrical Knockouts 1

3 3-in. Expansion Section 3/5

4 Strip Heater (Optional) 1

5 Limit Switch**†† (Optional) 1

61/2-in. Isolation Ball Valves**

2/4

7 Flexible Drain Tube/P-Trap 1

8 Drain Pan 1

9 Coil

/2-in. OD Tube

10 Filter, Throwaway, 1-in.** 1 11 Air Vent, Manual 1 12 Control Box 1 13 Cabinet Camloc

Fasteners 2

14 3-Speed Switch

15 Electrical Access Panel 1 16 Riser, Supply and Return (Copper) 2/4 17 Riser, Drain (Copper) 1 18 Return Air Panel 1 19 Return Air Blockoff Panel (Optional)

20 Motor, 3-Speed, PSC 1 21 Blower 1 22 Thermostat 1 23 Hinged Control Access Door 1 24 Double Deflection Steel Core Grille Assembly 1

LEGEND

CR — Cold Water Return CS — Cold Water Supply D— Drain HR — Hot Water Return HS — Hot Water Supply R— Return S—Supply

Fig. 29 — 42SH Cabinet Dimensions

†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in.)

UNIT

WEIGHT†

(lb)

Single Supply Double Supply Top Supply

EGHI J

ABA BCD

03 300 14 8 14 6 14 10 17 11/211/214 401/

360

04 400 14 12 14 6 14 10 17 1

/211/214 401/

450

06 600 18 10 18 6 16 12 20 1 2 18 461/

480

08 800 18 12 18 6 16 12 20 1 2 18 46

520

10 1000 ——22 81816241 322541/

560

12 1200 ——22 81816241 32254

610

*Drawing provided for reference only. Dimensions may vary with options ordered. NOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.

2. All risers are insulated with 1/2-in. closed cell insulation.

3. Thermostats shipped loose for field connection.

4. Risers are piped to coil with valves as specified.

5. Blower, motor, valves, coil, and filter are accessible through the return air opening.

6. Unit and control box are insulated with

/2-in. coated fiberglass insulation.

7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.

8. Maximum riser size is 21/2-in. diameter. If larger sizes are required, please consult the factory.

9. Expansion loops in hot water heating circuits as required.

11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).

12. All dimensions are in inches.

**Factory-Installed.

††Field-Installed.

ITEM DESCRIPTION QTY

1 Electrical Knockouts

Gypsum Board,

/8-in. Type “X” 1

3 3-in. Expanded Section 3/5 4 Strip Heater**(Optional) 2 5 Limit Switch**†† (Optional) 2 6

/2-in. Isolation Ball Valves** 4/8

Thermafiber Insulation 2

8 Flexible Drain Tube/P-Trap 2 9 Coil

/2-in. OD Copper Tube

10 Filter, Throwaway, 1-in.** 2 11 Return Air Opening 2 12 Air Vent, Manual 2 13 Knockout (For Optional Remote Mounting) 2 14 Molex Connector for Field Installed Stat 2 15 Control Box 2 16 Riser, Drain (Copper) 1 17 Riser, Supply and Return (Copper) 2/4 18 Drain Pan 2 19 Return Air Blockoff Panel (Optional)

20 Blower 2 21 Motor, 3-Speed, PSC, with Quick Connect 2 22 Access Panel (Control Box) 2 23 Control Opening (Surface Mount Stat) 2 24 Duct Collar,

/2-in. Extension (Typical)

1/2/3

25 Supply Air Opening(s) 1/2/3

LEGEND

CR — Cold Water Return CS — Cold Water Supply D—Drain HR — Hot Water Return HS — Hot Water Supply R—Return S—Supply

A42-4127

Fig. 30 — 42SJ Back-to-Back Furred-In Stack Dimensions

*Drawing provided for reference only. Dimensions may vary with options ordered. NOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.

2. All risers are insulated with 1/2-in. closed cell insulation.

3. Thermostats shipped loose for field connection.

4. Risers are piped to coil with valves as specified.

5. Blower, motor, valves, coil, and filter are accessible through the return air opening.

6. Unit and control box are insulated with 1/2-in. coated fiberglass insulation.

7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.

8. Maximum riser size is 21/2-in. diameter. If larger sizes are required, please consult the factory.

9. Expansion loops in hot water heating circuits as required.

10. A 9-in. x 2

/4-in. slot is provided in the inside back panel for coil connection penetration to permit expansion

and contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.

11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).

12. All dimensions are in inches.

†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT

SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in.)

UNIT

WEIGHT†

(lb)

Single Supply Double Supply Top Supply

EGH I

AB A BCD

03 300 14 8 14 6 14 10 17 11/211/214 180

04 400 14 12 14 6 14 10 17 1

/211/214 225

06 600 18 10 18 6 16 12 20 1 2 18 240

08 800 18 12 18 6 16 12 20 1 2 18 260

10 1000 ——22 81816241 322 280

12 1200 ——22 81816241 322 305

A42-4128

**Factory-Installed.

††Field-Installed.

ITEM DESCRIPTION QTY

1 Electrical Knockouts

2 3-in. Expanded Section 3/5 3 Strip Heater** (Optional) 1 4 Limit Switch**†† (Optional) 1 5

/2-in. Isolation Ball Valves** 2/4

6 Flexible Drain Tube/P-Trap 1 7 Coil

/2-in. OD Copper Tube

8 Filter, Throwaway, 1-in.** 1

9 Return Air Opening 1 10 Air Vent, Manual 1 11 Knockout (For Optional Remote Mounting) 2 12 Molex Connector for Field-Installed Thermostat 1 13 Control Box 1 14 Riser, Supply and Return (Copper) 2/4 15 Riser, Drain (Copper) 1 16 Drain Pan 1 17

Return Air Blockoff Panel (Optional) 1

18 Blower 1 19 Motor, 3-Speed, PSC, with Quick Connect 1 20 Access Panel (Control Box) 1 21 Control Opening (Surface Mount Ther mostat) 1 22 Duct Collar, 1/2-in. Extension (Typical)

1/2/3

23 Supply Air Opening(s) 1/2/3

LEGEND

CR — Cold Water Return CS — Cold Water Supply D—Drain HR — Hot Water Return HS — Hot Water Supply R—Return S—Supply

Fig. 31 — 42SGM Furred-In Master Stack Dimensions

*Drawing provided for reference only. Dimensions may vary with options ordered. NOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.

2. All risers are insulated with

/2-in. closed cell insulation.

3. Thermostats shipped loose for field connection.

4. Risers are piped to coil with valves as specified.

5. Blower, motor, valves, coil, and filter are accessible through the return air opening.

6. Unit and control box are insulated with

/2-in. coated fiberglass insulation.

7. Riser length = [(floor to floor) +2 in.], maximum riser length = 115 inches.

8. Maximum riser size is 21/2-in. diameter. If larger sizes are required, please consult the factory.

9. Expansion loops in hot water heating circuits as required.

11. Drawing is pictorial (see unit arrangements for actual supply and return air orientation).

12. All dimensions are in inches.

†Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT SIZE

NOM

AIRFLOW

(cfm)

DIMENSIONS (in.)

UNIT

WEIGHT†

(lb)

Single Supply Double Supply Top Supply

EGH I

ABABCD

03 300 14 8 14 6 14 10 17 11/211/214 162

04 400 14 12 14 6 14 10 17 11/211/214 203

06 600 18 10 18 6 16 12 20 1 2 18 216

08 800 18 12 18 6 16 12 20 1 2 18 234

10 1000 — — 22 8 18 16 24 1 3 22 252

12 1200 — — 22 8 18 16 24 1 3 22 275

A42-4129

**Factory-Installed.

††Field-Installed.

ITEM DESCRIPTION QTY

1 Electrical Knockouts

2 Strip Heater** (Optional) 1 3 Limit Switch**†† (Optional) 1 4

/2-in. Isolation Ball Valves** 2/4

5 Coil Stub Outs 2/4 6 Shipping Brace 2/4 7 Flexible Drain Tube/P-Trap 1 8 Coil 1/2-in. OD Copper Tube

9 Filter, Throwaway, 1-in.** 1 10 Return Air Opening 1 11 Air Vent, Manual 1 12 Knockout (For Optional Remote Mounting) 2 13 Molex Connector for Field-Installed Stat 1 14 Control Box 1 15 Drain Pan 1 16 Return Air Blockoff Panel (Optional) 1 17 Blower 1 18 Motor, 3-Speed, PSC, with Quick Connect 1 19 Access Panel (Control Box) 1 20 Control Opening (Surface Mount Thermostat) 1 21 Duct Collar,

/2-in. Extension (Typical)

1/2/3

22 Supply Air Opening(s) 1/2/3

LEGEND

CR — Cold Water Return CS — Cold Water Supply D—Drain HR — Hot Water Return HS — Hot Water Supply R—Return S—Supply

Fig. 32 — 42SGS Furred-In Slave Stack Dimensions

Fig. 33 — 42SU Universal Furred-In Stack Dimensions

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT

SIZE

UNIT

WEIGHT* lb

(kg)

DIMENSIONS, in. (mm)

FILTER SIZE

in. (mm)

Side Supply Top Supply

AB Size CD Size EFH I

03 360 (163)

14 (356) 12 (305)

14 x 12

(356 x 305)

14 (356) 10 (254)

14 x 10

(356 x 254)

17 (432) 3 (76) 1

/2 (38) 14 (356)

121/2 x 241/4 x 1 (318 x 616 x 25)

04 450 (204)

06 480 (218)

18 (457) 12 (305)

18 x 12

(457 x 305)

16 (406) 12 (305)

16 x 12

(406 x 305)

20 (508) 1 (25) 2 (51) 18 (457)

/4 x 263/4 x 1

(413 x 679 x 25)

08 520 (236)

10 560 (254)

22 (559) 16 (406)

22 x 16

(559 x 406)

18 (457) 16 (406)

18 x 16

(457 x 406)

24 (610) 1 (25) 3 (76) 22 (559)

/2 x 291/4 x 1

(521 x 743 x 25)

12 610 (277)

(203)

(1295)

(1600)

(991)

(127)

1-1/4

(32)

(102)

(127)

(2235)

HRHSCRC

1-1/4

(32)

HCH

HR CR CSHS D

3-5/8

(92)

3-5/8

(92)

(76)

1-1/4

(32)

NOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.

2. Thermostats shipped loose for field connection.

3. Blower, motor, valves, coil, and filter are accessible through the return air opening.

4. Unit and control box are insulated with 1/2-in. (13 mm) coated fiberglass insulation.

5. All risers will ship separately from units. Riser dimensions are measured from centerline of knockout.

6. Drain knockouts on three sides of cabinet.

7. Flex hoses ship with unit.

8. Thread fittings on both ends of flex hoses must be field tightened and leak tested.

9. Return air panel not shown.

10. All dimensions are in inches (mm).

LEGEND

CR — Cold Water Return CS — Cold Water Supply D—Drain HR — Hot Water Return HS — Hot Water Supply PSC — Permanent Split Capacitor SWT — Sweat

Item Description Qty

1 Float Switch (Optional) 1

2 Drain Pan 1

3 Flexible Drain Tube/P-Trap 1

4 Drain Knockout (3 Sides)

1 each

side

5 Blower 1

6 Riser Knockouts (3 Sides) 2/4

7 1/2 in. Flare Adaptor (SWT x 37.5) 2/4

8 Coil, 1/2 in. OD Copper Tube 1

1 in. Throwaway Filter (Factory Installed)

10 Manual Air Vent 1

11 Return Air Opening 1

Knockout (For Optional Thermostat Remote Mounting)

Molex Connector for Field-Installed Thermostat

14 Control Box 1

Duct Collar Extension (1/2 in. Side, 1 in. Top)

1/2/3

Outside Air Knockout (On Each Side Panel)

Electrical Knockouts (Near Each Side)

18 Service Switch (Optional) 1

Motor, 3-Speed, PSC, with Quick Connect

20 Coil Blockoff Plate 1

21 Access Panel (Control Box) 1

Control Opening Knockout (Surface Mount Thermostat)

Supply Air Openings (4 Sides and Top, Stitch Cut)

1/2/3

a42-4154

Fig. 34 — 42SU Universal Furred-In Stack with Heater Dimensions

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

UNIT

SIZE

UNIT

WEIGHT*

lb (kg)

DIMENSIONS, in. (mm)

FILTER SIZE

in. (mm)

Side Supply Top Supply

AB Size CD Size EFH I

03 360 (163)

14 (356) 12 (305)

14 x 12

(356 x 305)

14 (356) 10 (254)

14 x 10

(356 x 254)

17 (432) 3 (76) 1

/2 (38) 14 (356)

121/2 x 241/4 x 1 (318 x 616 x 25)

04 450 (204)

06 480 (218)

18 (457) 12 (305)

18 x 12

(457 x 305)

16 (406) 12 (305)

16 x 12

(406 x 305)

20 (508) 1 (25) 2 (51) 18 (457)

/4 x 263/4 x 1

(413 x 679 x 25)

08 520 (236)

10 560 (254)

22 (559) 16 (406)

22 x 16

(559 x 406)

18 (457) 16 (406)

18 x 16

(457 x 406)

24 (610) 1 (25) 3 (76) 22 (559)

/2 x 291/4 x 1

(521 x 743 x 25)

12 610 (277)

NOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.

2. Thermostats shipped loose for field connection.

3. Blower, motor, valves, coil, and filter are accessible through the return air opening.

4. Unit and control box are insulated with

/2-in. (13 mm) coated fiberglass insulation.

5. All risers will ship separately from units. Riser dimensions are measured from centerline of knockout.

6. Drain knockouts on three sides of cabinet.

7. Flex hoses ship with unit.

8. Thread fittings on both ends of flex hoses must be field tightened and leak tested.

9. Return air panel not shown.

10. All dimensions are in inches (mm).

LEGEND

CR — Cold Water Return CS — Cold Water Supply D—Drain HR — Hot Water Return HS — Hot Water Supply PSC — Permanent Split Capacitor SWT — Sweat

(203)

(1295)

(1600)

(991)

(127)

1-1/4

(32)

(102)

(127)

(2235)

HRHSCRC

1-1/4

(32)

HCH

HR CR CSHS D

3-5/8

(92)

3-5/8

(92)

(76)

1-1/4

(32)

Item Description Qty

1 Float Switch (Optional) 1 2 Drain Pan 1 3 Flexible Drain Tube/P-Trap 1

4 Drain Knockout (3 Sides)

1 each

side

5 Limit Switch (Factory Installed) 1 6 Strip Heater 1 7 Blower 1 8 Riser Knockouts (3 Sides) 2/4 9 1/2 in. Flare Adaptor (SWT x 37.5) 2/4

10 Coil, 1/2 in. OD Copper Tube 1

1 in. Throwaway Filter (Factory Installed)

12 Manual Air Vent 1 13 Return Air Opening 1

Knockout (For Optional Thermostat Remote Mounting)

Molex Connector for Field-Installed Thermostat

16 Control Box 1

Duct Collar Extension (1/2 in. Side, 1 in. Top)

1/2/3

Outside Air Knockout (On Each Side Panel)

Electrical Knockouts (Near Each Side)

20 Service Switch (Optional) 1

Motor, 3-Speed, PSC, with Quick Connect

22 Coil Blockoff Plate 1 23 Access Panel (Control Box) 1

Control Opening Knockout (Surface Mount Thermostat)

Supply Air Openings (4 Sides and Top, Stitch Cut)

1/2/3

a42-4155

Fig. 35 — Return-Air Wall Panels for Furred-In Units — Panels with No Frame

PANEL DIMENSIONS (in.)

NOTE: Dimensions in inches.

PANEL NO. UNIT SIZE A

03, 04 15.5 06, 08 19.5 10, 12 23.5

03, 04 15.2 06, 08 19.2 10, 12 23.2

03, 04 15.5 06, 08 19.5 10, 12 23.5

03, 04 15.1 06, 08 19.1 10, 12 23.1

03, 04 15.5 06, 08 19.5 10, 12 23.5

03, 04 15.2 06, 08 19.2 10, 12 23.2

PANEL NO. 1

55.5

a42-4167

PANEL NO. 2

61.1

a42-4169

PANEL NO. 6

61.1

A42-4171

PANEL NO. 7

60.4

A42-4172

A42-4173

PANEL NO. 8

52.5

A42-4160

PANEL NO. 10

52.3

A42-4162

55.3

PANEL NO. 3

Fig. 36 — Return-Air Wall Panels for Furred-In Units — Panels with Frame

PANEL AND FRAME DIMENSIONS (in.)

NOTE: Dimensions in inches.

PANEL NO. UNIT SIZE A

03, 04 15.1 06, 08 19.1 10, 12 23.1

A42-4168

PANEL NO. 5

60.4

A42-4170

PANEL NO. 9

51.7

A42-4161

54.7

PANEL NO. 4

INSTALLATION

Step 1 — Place Units in Position

42C UNITS

1. Select the unit location. Allow adequate space for free air circulation, service clearances, piping and electrical connections, and any necessary ductwork. For specific unit dimensions, refer to Fig. 1-14. Allow clearances according to local and national electric codes.

2. Make sure ceiling is able to support the weight of the unit. See Table 1 for nominal unit weight.

3. Ensure bottom panel has been removed from 42CG, CK units with mounting holes. When unit is lifted, access to the 0.375-in. mounting holes is through the bottom of the unit. Hanger rods and fasteners and other required hardware must be field-supplied.

4. Move unit into position. Ensure unit is level or pitched towards drain to ensure proper drainage and operation. Pitch of suspended unit can change after coil is filled; recheck after filling coil.

5. Mounting unit: a. Use rods and fasteners to suspend the unit at the

factory-provided mounting holes with rubber grommets on the top of the unit on 42CG, CK units. Reach into unit and attach unit to the ceiling using the 0.375-in. mounting holes (4) in top panel; do not use any other locations.

b. Use rods and fasteners to suspend the unit at the

factory-provided 0.375-in. hanger slots (4) with rubber grommets on the top of the unit on the 42CA, CE, and CF units.

NOTE: The four mounting holes and hanger slots

with rubber grommets are NOT for balancing unit.

6. 42CA and 42CF units without plenums and 42CE and CF with bottom inlet may be installed in noncombustible areas only.

NOTE: The installation of horizontal concealed units must meet the requirements of the National Fire Protection Association (NFPA) Standard 90A or 90B concerning the use of concealed ceiling space as return-air plenums.

42V UNITS

1. Select the unit location. Allow adequate space for free air circulation, service clearances, piping and electrical connections, and any necessary ductwork. For specific unit dimensions, refer to the submittals. Allow clearances according to local and national electric codes.

2. Make sure the floor is able to support the weight of the unit. See Table 2 for nominal unit weight.

3. Ensure wall behind unit is smooth and plumb; if necessary, install furring strips on walls with irregular surfaces or mullions. Furring strips must be positioned behind mounting holes in unit (42VA, VB, VF units). Fasteners, furring strips, and other seals (if required) must be field-supplied.

4. Remove all wall and floor moldings from behind the unit.

5. Ensure 42VA top panel (under window application) and 42VB, VF front panel has been removed from unit to obtain access to the four 0.75-in. mounting holes. Hanger rods and fasteners and other required hardware must be field-supplied.

6. Move unit into position. Ensure unit is level or pitched towards drain to ensure proper drainage and operation. Pitch of suspended unit can change after coil is filled; recheck after filling coil.

7. Adjust 42VA, VB, VC, VE, VF units leveling legs so unit is level. Unit must be level for proper operation and condensate drainage.

8. Mounting unit:

a. Use rods and fasteners to suspend the unit at the

factory-provided mounting holes with rubber grommets on the top of the unit on 42VA, VB, VF units. Reach into unit and attach unit to the wall using the 0.375-in. mounting holes (4) in top panel; do not use any other locations. The four mounting holes and hanger slots with rubber grommets are NOT for balancing unit.

b. On 42VG unit ensure unit is placed snug within

the wall.

c. On 42VC, VE unit ensure unit is flushed against

the wall.

NOTE: For any unit without a return-air duct connection, applicable installation codes may limit unit to installation in single story residence only.

42D UNITS

1. Select the unit location. Allow adequate space for free air circulation, service clearances, piping and electrical connections, and any necessary ductwork. For specific unit dimensions, refer to the submittal drawings. Allow clearances according to the local and national electrical codes.

2. Be sure either the ceiling (42DA, DC, DE, and DF units) or floor (42DD unit) is able to support the weight of the unit. See Table 3 for nominal unit weight.

3. Move unit into position. Ensure unit is level or pitched towards drain to ensure proper drainage and operation. See Fig. 23-27. Pitch of suspended unit can change after coil is filled; recheck after filling coil.

4. Mounting units to the ceiling:

a. When unit is lifted, access to the 0.375-in. mount-

ing holes is on the top panel of the unit. Hanger rods and fasteners and other required hardware must be field-supplied.

b. Use rods and fasteners to suspend the unit at the

factory-provided mounting holes with rubber grommets on the top of the unit. Attach unit to the ceiling using the 0.375-in mounting holes (4) in top panel; do not use any other locations.

c. Use the rods and fasteners to suspend the unit at

the factory-provided 0.375-in. hanger slots (4) with the rubber grommets on the top of the unit on the 42DA, DC, DE, and DF units.

NOTE: The four mounting holes and hanger slots with rubber grommets are NOT for balancing unit.

d. Models 42DA and 42DC with bottom inlet may be

installed in noncombustible return spaces only.

5. Mounting units on the floor:

a. Ensure wall behind the unit is smooth and plumb;

if necessary, install furring strips on walls with irregular surfaces or mullions. Furring strips must be positioned behind mounting holes on 42DD units. Fasteners, furring strips, and other seals (if required) must be field-supplied.

b. If the unit has leveling legs, adjust them correctly

to level the unit.

6. Protect units from damage caused by jobsite debris. Do not allow foreign material to fall in unit drain pan. Prevent dust and debris from being deposited on motor or fan wheels.

42S UNITS — A factory tag is on top of each unit. Tag states

42SJB

42SJA

42SJB

42SJA

Fig. 37 — 42SJ Unit with Standard and Siamese

Risers

INSTALL WALL STUD INTO

POCKET FORMED BY CHASE SIDE PANEL

CHASE SIDE PANEL

DRYWALL TRACK AND STUD CONTROL LINES

INSTALL STUDS FROM TOP OF

UNIT TO CEILING (4 CORNERS)

Fig. 38 — 42SJ Unit as Shipped

Fig. 39 — 42SJ Unit Installation

riser tier number, floor, room number if furnished and supplyair arrangement. Check unit for any other labels that apply to installation. Remove unit from pallet and take directly to assigned space for installation. Great care must be taken to assure that no force or pressure be applied to the coil, risers or piping during handling. Never use the riser to lift the unit. To maintain the straight and square cabinet alignment, avoid lifting or supporting the cabinet only at the top and bottom.

1. Begin on lowest floor and progress upward, floor by floor, to top.

2. Examine drain line (Fig. 28-34). Be sure both ends are in place and that it forms a trap. Avoid pinching drain line.

3. Tip unit over riser hole in building floor. As unit is righted, align riser with unit below.

NOTE: The unit must be lowered into the space taking care to properly align the risers to engage the riser swaged section on the unit below. The riser should never be bent or pushed together to be passed through the floor slot and should never be lifted up or pulled down to meet the riser on the floor below or above.

4. Install isolator pads beneath the four corners of unit if applicable.

5. Before anchoring the equipment in place, the unit must be leveled and the cabinet must be squared and brought into line with any adjacent or included walls. The unit may be anchored in place by bolting directly through the unit floor or attaching to the cabinet in some location that will not interfere with drywall or other items such as the supply grille, thermostat, or return access panel. When attaching to the unit cabinet, care must be taken to not penetrate the cabinet in locations that may damage internal components or wiring. The mounting technique is a matter of choice; however, the unit should always be anchored securely to prevent movement during construction and riser expansion and contraction. On certain units, shipping screws or braces must be removed after the unit is installed. Be sure to check all tags on the unit to determine which, if any, of these devices need to be removed.

6. If installing a 42SJ unit, follow Steps a-h. For all other 42S units, continue to Step 7.

NOTE: The 42SJ back-to-back fan coils have been designed to serve two separate rooms. These products are classified by Underwriters Laboratories Inc. for use in penetration firestop systems, control number 27WL when ordered with 1-hr rated chase. See UL Fire Resistance Directory for more information. Figure 37 shows the 42SJ unit with standard risers and with Siamese risers.

a. Lay out the control lines for the drywall track and

studs in the floor and ceiling (see Fig. 38).

NOTE: Tracking may be installed now or after the unit is set.

b. Position the 42SJ fan coil assembly between two

rooms with the unit drywall separation spotted over the wall control lines.

c. If not already installed, install the floor and ceiling

tracks up to and over the 42SJ fan coil unit.

d. Position the vertical studs and fasten into each of

the stud pockets formed into the chase side panels (see Fig. 38).

NOTE: The studs may be mechanically fastened to the 42SJ fan coil. Care should be taken, however, not to penetrate the supply or return water risers or internal piping. Given the levelness of the floor and/or the fan coil assembly, some shimming may be necessary.

e. Assemble the specified wall construction up to

and over the top of the fan coil unit (see Fig. 39).

f. With the fire-wall separation being complete, the

drywall skin on the surface of the individual fan coils can be applied. Drywall can be applied directly to the surface, or, if necessary, studding may be installed on the corners for vertical control (see Fig. 39).

g. For ease of installation of the access panel, apply

drywall on the return air side directly to the surface of the unit (see Fig. 39). When applying the wall board directly to the unit cabinet, it may be necessary to shim the wall board in some areas to achieve the desired finished wall surface.

INSTALL WALL

WALL STUDS

GYPSUM BOARD (TO WALL AND OVER TOP OF UNIT)

INSTALL GYPSUM BOARD TO FACE OF UNIT WITH CUT OUTS FOR SUPPLY, RETURN AND THERMOSTAT

INSTALL GYPSUM BOARD TO UNIT SIDES

h. After all drywalling and painting is complete,

install thermostats, supply air grilles and return air panels.

7. Attach unit risers:

CAUTION

Toxic residues and loose particles resulting from manufacturing and field piping techniques such as joint compounds, soldering flux, and metal shavings may be present in the unit and the piping system. Special consideration must be given to system cleanliness when connecting to solar, domestic or portable water systems. Failure to heed this warning could result in equipment damage.

NOTE: The supply and return connections are marked on the coil stub-outs and the valve package with an “S” meaning supply or inlet and “R” meaning return or outlet indicating flow direction to and from the coil. Blue letters mark the chilled water connections and red letters mark the hot water connections.

a. Each riser has a 3-in. swaged portion at top and

sufficient extension at bottom for an inserted length of approximately 2-in. This unit-to-unit joint is NOT intended for full bottoming in the joint, but allows for variations in floor-to-floor dimensions and for correct riser positioning.

If job requires that unit risers be supplemented with between-the-floor extensions pieces may be field-supplied or factory-supplied. If factorysupplied, insulation is also provided.

b. Level unit to ensure proper coil operation and

condensate drainage. Proper riser installation and vertical positioning in the unit provides for a unit piping run-out to the service valves which are centered in the access slots and level or sloping down slightly away from the riser. This prevents condensation from running back to the riser and possible damage from dripping at the bottom of a riser column. After units are positioned and riser centered in pipe chase, make unit plumb in two directions, using unit frame as a reference.

c. Anchor unit to building. Use bolts or lag screws

through holes provided in unit frame.

d. After all units in a stack are anchored, make unit-

to-unit riser joints. First, center each coil-to-riser line within the expansion slot in the unit back panel. Each riser joint must be in vertical alignment with at least 1-in. penetration into the swaged joint. This condition is met if floor-tofloor dimension is as specified and coil-to-riser lines are properly centered. Wide variations in floor-to-floor dimensions may necessitate cutting off or extending individual risers. Such modifications are the full responsibility of the installing contractor.

e. Before making the riser joints, the riser insulation

must be pulled back away from the joint and protected from heat during the soldering process. Solder riser joints with phos-copper, silfos, or other high temperature alloy. The riser joint filler material must be selected to withstand the total operating pressure (both static and pumping head) to which the system will be subjected. Soft solder (50-50, 60-40, or 85-15) or other low temperature lead alloy is not suitable for this application.

IMPORTANT: Chilled water and hot water risers should never be piped to drain down into the condensate riser. Extensive water damage can occur due to drain overflow. Drain chilled and hot water risers to a remote location away from the unit such as sink, room and floor drains.

8. Anchor risers as required: a. Do not fasten risers rigidly within each unit.

Risers must be free to move within pipe chase in response to normal vertical expansion and contraction.

b. Built in risers must be anchored at some point

to building structure. Unit design accommodates

up to 1

/2-in. expansion and contraction in riser

assemblies when positioned properly at the job site. Risers must be anchored to the building structure to limit expansion and contraction movement

to a maximum of 1

/2-inches. Riser anchoring and

expansion compensation is not included in the factory-supplied unit and must be provided.

9. Test the system for leaks after the connections are com-

pleted. When testing with air or some other gas, it might be necessary to tighten stem packing nuts on some valves to maintain air pressure in the riser. Pressure testing risers with water should be done with the unit service valves closed to prevent flushing debris into the unit valve packages. This will also allow risers to be drained down after testing in the winter to avoid freeze-up problems.

10. After system integrity has been established, pull the riser insulation back into place over the joint and glue or seal to prevent sweating and heat loss or gain. Internal chilled water piping and valves are located over the drain pan and need not be insulated.

11. If required, fireproof were necessary. Any fireproofing requirements where risers or piping penetrate floors or walls are the responsibility of the installer. This work should be done only after all pressure testing is completed. The fireproofing method used must accommodate pipe expansion and contraction and the piping must be protected from abrasion and chemical attack. The pipe insulation also must be maintained to prevent sweating and must be protected from wear or erosion at the joint between the insulation and the fireproofing material.

Step 2 — Make Piping Connections — Access to

piping is available through the access panels at the side of the units or front of the unit. Qualified personnel in accordance with local and national codes must perform all piping connections. Refer to Tables 1-4 for piping connections.

NOTE: It is important to have a common understanding of which side of the unit is the right hand side and which is the left hand side.

When facing the supply air outlet from the front of the unit (air blowing in your face), your right hand will be on the right side of the unit and your left hand will be on the left side of the unit. See Fig. 40. Refer to Fig. 41 and 42 for typical piping connections.

The supply and return piping connections of the factoryprovided valve package are either swaged for field brazing (standard) or union fitted (optional) for field connection to the coil.

VALVE PACKAGES — There are limitations on physical

Fig. 40 — Unit End Reference

NOTE: Chilled water piping determines the hand of the unit.

Fig. 41 — Pipe Connection Configurations

NOTE: Chilled water piping determines the hand of the unit.

SAME END CONNECTION

OPPOSITE END CONNECTION

Valve Packages For 2-Pipe Systems — Valve packages for standard 2-pipe units are piped for same end

connection (L.H. or R.H.).

Valve Packages for 4-Pipe Systems — Select 2 valve packages per unit. NOTE: Hot water valve package requirements may not be the same as chilled water valve package!

LEGEND

CW — Chilled Water HW — Hot Water LH — Left Hand RH — Right Hand

SAME END CONNECTION

OPPOSITE END CONNECTION

size of pneumatic valves, quantity and type of matching components, and required control interface. See Fig. 43.

Consult factory before ordering any special valve package

components that are not covered in this book.

Valve packages are shipped with the units or in unit cartons. Valve packages include belled ends for field soldering to coil connections.

All factory-furnished cooling valve packages are arranged to position as much of the package as possible over an auxiliary drain pan or drip lip. This helps minimize field piping insulation requirements. Refer to Fig. 44-47 for pipe connection configurations. See Table 5 for descriptions of common piping components.

Fig. 42 — Piping Connection Positions

Hydronic Coil Arrangement

Field Piping Connections*

VERTICAL FLOOR UNITS — 42VB, VE, VF

Pipe into cabinet end compartment (opening in bottom and back).

VERTICAL FLOOR UNITS — 42VA, VC

Pipe to external connections (no cabinet).

CEILING UNITS (EXPOSED) — 42CG, CK, DE, DF

Pipe through knock-outs in rear of cabinet to coil and valve package connections.

CEILING UNITS (CONCEALED) — 42CA, CE, CF, DA, DC

Pipe to connections extending from end of unit.

VERTICAL UNITS — 42DD

Pipe to stub connections extending from side of unit.

WALL UNITS, FURRED-IN

Pipe to stub connections at the side of unit.

or into optional piping compartment. Optional piping compartment is required if valves are factory installed. Factory-installed valve package is limited to one 2-way or 3-way motorized valve and 2 hand valves.

*Location of field piping connections will vary depending on number of coil rows on factory-supplied coil or

arrangement of factory-supplied valves.

42VG

a42-4177

Fig. 43 — Symbols and Placement of Valves

Coil Connections (Positions A & B) — When isolation valve only is added to supply or return line, the isolation valve will

be factory brazed to the coil stub-out. Addition of any other component or connection to the supply or return line will change the respective coil connection(s).

Service Fittings (Positions C & D) — Optional fittings for attaching pressure/temperature sensing devices to obtain pressure drop or temperature differential across coil. Used with ball valve or balance valve where extremely accurate water flow balancing is required.

Water Flow Balancing (Positions E, F, & H) — Only one device per total valve package to be used for balancing water flow through the coil. When isolation valve (ball valve or ball valve with memory stop at position H) is used for water flow balancing, do not specify additional balancing device at position E or F. When balancing device is specified at position E or F, isolation valve does not require balancing feature at position H (with a 3-way motorized valve, a bypass balancing valve may be specified in the bypass line to permit equal flow balancing).

Strainer (Position G) — Does not include blow down fitting and should not be used in lieu of main piping strainers. Isolation Valves (Positions H & J) — Normally requires one each on supply and return line (see exception under circuit

setter). When position H is used for balancing (ball valve or ball valve with memory stop), check specifications for service valve requirements.

BALL VALVE

GATE

SHUT OFF

(1) GATE (1) BALL (1) 2-WAY MOTORIZED

COIL

BALL VALVE

(2) BALL (1) BALANCING (1) 2-WAY MOTORIZED

COIL

CIRCUIT SETTER

BALL VALVE

(1) BALL (1) CIRCUIT SETTER (1) 2-WAY MOTORIZED

COIL

MOTORIZED

2-WAY VALVE

BYPASS

BALANCING VALV E

MOTORIZED

2-WAY VALVE

BYPASS

MOTORIZED

2-WAY VALVE

BYPASS

Fig. 44 — Two-Way Motorized Control Valve Package

Fig. 45 — Two-Way Motorized Control Valve Package with Aquastat Bleed Bypass Line

The 2-way motorized valve motor drives valve open and a spring returns valve to normally closed position (no water flow with unit OFF).

Supply connection at coil will be swage fit for field braze (standard) or union (option). Return connection at coil will be factory brazed if isolation valve only. Addition of any other component will require swage fit for field braze or optional union connection. Check job specifications for system pressure, pressure drop limitations and flow rate prior to selecting valve package components or valve package size (

/2in., 3/4 in., etc.).

2-PIPE SYSTEM (One Valve Package) or 4-PIPE SYSTEM (Two Valve Packages) Application:

• 2 Pipe — Hydronic Heating Only

• 2 Pipe — Hydronic Cooling Only

• 2 Pipe — Hydronic Cooling with Total Electric Heat

• 4 Pipe — Hydronic Cooling and Heating NOTE: A

/4-in. bypass line is included in the piping package when a 2-way valve is specified with a control package containing an automatic changeover device.

The 2-way motorized valve motor drives valve open and a spring returns valve to normally closed position (no water flow through coil with unit OFF).

The aquastat bleed bypass bleeds a small amount of water from supply to return when control valve is closed (required for system water temperature sensing by aquastat). Aquastat (A) clips on supply line upstream from aquastat bleed bypass (as shown at right). It senses system water temperature to prevent cooling operation with hot water in system piping or heating operation with chilled water in system piping. Additional aquastat required to lock out the optional auxiliary electric heat when hot water in system.

Supply and return connections at coil will be swage fit for field braze (standard) or unions (option).

Check job specifications for system pressure, pressure drop limitations and flow rate prior to selecting valve package components or valve package size (

/2in., 3/4 in., etc.).

2-PIPE SYSTEM (One Valve Package) Application:

• 2 Pipe — Hydronic Cooling and Heating

• 2 Pipe — Hydronic Cooling and Heating with Auxiliary Electric Heat

NOTES: Additional aquastat required as noted above.

LEGEND

Ball Valve

Motorized 2-Way Valve

LEGEND

Balancing Valve

Ball Valve

Circuit Setter

Gate Shut Off Valve

Motorized 2-Way Valve

MOTORIZED

a42-4174

MOTORIZEDMOTORIZED

a42-4175

MOTORIZED

CIRCUIT SETTER

(1) BALL (1) CIRCUIT SETTER (1) 3-WAY MOTORIZED

COIL

BALL VALVE

GATE

SHUT OFF VALVE

(1) GATE (1) BALL (1) 3-WAY MOTORIZED

COIL

BALL VALVE

(2) BALL (1) BALANCING (1) 3-WAY MOTORIZED

COIL

MOTORIZED

3-WAY VALVE

BYPASS

BALANCING VALV E

MOTORIZED

3-WAY VALVE

BYPASS

(1) BALL (1) 3-WAY MOTORIZED

COIL

BALANCING VALV E

BALL VALVE

(WITH MEMORY STOP)

MOTORIZED

3-WAY VALVE

BYPASS

(2) BALL (ONE WITH MEMORY STOP) (1) 3-WAY MOTORIZED

COIL

BALL VALVE

MOTORIZED

3-WAY VALVE

BYPASS

COIL

BALL VALVE

MOTORIZED

3-WAY VALVE

BYPASS

Fig. 46 — Three-Way Motorized Control Valve Package

On the 3-way motorized valve flow is normally closed to coil and open to system return. Motor closes bypass flow to system return while opening flow through coil. Water bypasses coil and flows directly to system return when unit is OFF.

The aquastat (A) clips on supply line upstream from 3-way valve (as shown above). It senses system water temperature to prevent cooling operation with hot water in system piping or heating operation with chilled water in system piping. Aquastat(s) required for 2-pipe cooling and heating with automatic changeover control and/or auxiliary electric heat.

A bypass balancing valve may be specified in the bypass line to permit equal flow balancing.

Supply and return connections at coil will be swage fit for field braze (standard) or unions (option).

Check job specifications for system pressure, pressure drop limitations and flow rate prior to selecting valve package components or valve package size (

/2in., 3/4 in., etc.).

2-PIPE SYSTEM (One Valve Package) or 4-PIPE SYSTEM (Two Valve Packages) Application:

• 2 Pipe — Hydronic Heating Only

• 2 Pipe — Hydronic Cooling Only

• 2 Pipe — Hydronic Cooling with Total Electric Heat

• 2 Pipe — Hydronic Cooling and Heating

• 2 Pipe — Hydronic Cooling and Heating with Auxiliary Electric Heat

• 4 Pipe — Hydronic Cooling and Heating

LEGEND

*When aquastat is used for automatic changeover, bypass is

required as indicated by dashed line.

NOTES:

1. Packages factory furnished and installed.

2. Valves are

/8-in. ODS unless otherwise specified.

3. If an automatic flow control valve is added, it will be located on supply line between shutoff valve and coil (or motorized control valve, if supplied).

Balancing Valve

Ball Valve

Ball Valve with Memory Stop

Circuit Setter

Gate Shut Off Valve

Motorized 3-Way Valve

MOTORIZED

a42-4176

WITH HAND VALVES ONLY

BALL VALVE

(2) BALL

COIL

BALL VALVE

GATE SHUT

OFF VALVE

(1) BALL (1) GATE

COIL

BALL VALVE

(2) BALL (1) BALANCING

COIL

BALL VALVE

(1) BALL (1) CIRCUIT SETTER

COIL

BALL VALVE

(2) BALL (1) 2-WAY MOTORIZED

COIL

BALL VALVE (WITH

MEMORY STOP)

BALL VALVE

(2) BALL (ONE WITH MEMORY STOP) (1) 2-WAY MOTORIZED

COIL

BALANCING

VALV E

MOTORIZED

2-WAY VALVE

MOTORIZED

2-WAY VALVE

CIRCUIT SETTER

Fig. 47 — Valve Package without Motorized Control

When isolation valves only are specified, they will be brazed to the coil stub-outs.

Check job specifications for system pressure, pressure drop limitations and flow rate prior to selecting specific components or valve package size (

/2 in., 3/4 in., etc.).

2-PIPE SYSTEM ONLY (One Valve Package) Application:

• 2 Pipe - Hydronic Heating Only

• 2 Pipe - Hydronic Cooling Only NOTES:

1. Continuous water flow, chilled water or hot water.

2. Not recommended for high humidity applications.

3. Not recommended with unit-mounted thermostat on vertical units (except package R).

4. The addition of any other component(s) will require swage fitting for field braze or optional union connection.

LEGEND

*When aquastat is used for automatic changeover, bypass is

required as indicated by dashed line.

NOTES:

1. Packages factory furnished and installed.

2. Valves are

/8-in. ODS unless otherwise specified.

3. If an automatic flow control valve is added, it will be located on supply line between shutoff valve and coil (or motorized control valve, if supplied).

Balancing Valve

Ball Valve

Ball Valve with Memory Stop

Circuit Setter

Gate Shut Off Valve

Motorized 2-Way Valve

42C,D,V DRAIN CONNECTIONS — Install drain line in

CONDENSATE PAN STUB-OUT

7/8 IN. FIELD-SUPPLIED DRAIN EXTENSION

TRAP

2 IN. MIN

Fig. 48 — Typical Drain Line Details

(42D Unit Shown)

accordance with all applicable codes. A continuous pitch of 1 in. per 10 ft of condensate drain line run is necessary for adequate condensate drainage. Insulate the drain line to prevent sweating. Extend the drain line straight from the drain pan before making any turns. The installer must provide proper support for the drain line to prevent undue stress on the auxiliary drain pan.

Install trapped drain line in accordance with all applicable codes (see Fig. 48). A drain trap may be required by local codes and is recommended for odor control. The differential height inlet to outlet must be at least 1-in. wg greater than the total static pressure of the unit. The differential height of the outlet to the bottom of the trap must not be less than the total static pressure of the unit.

Provide a trap of at least 2-in. near the end of the drain line to prevent odors from entering the rooms.

42C,D,V WATER SUPPLY/RETURN CONNECTIONS — Install piping in accordance with all applicable codes. Position valves over the drain pan. Be sure valves are in proper operating position and are easily accessible for adjustment. See Fig. 44-47. Refer to Fig. 49 for copper water tube and joint material pressure ratings.

If coil and valve package connections will be made with a solder joint, care should be taken to ensure that the components in the valve package are not subjected to high temperatures, which may damage seals or other materials. Many 2-position electric control valves are provided with a manual operating lever. This lever should be in the OPEN position during all soldering operations.

If coil connection is made with a union, the coil side of the union must be prevented from turning (it must be backed up) during tightening. See Fig. 44-47 for common valve packages.

CAUTION

NOTE: The project specifications for system pressure, pressure drop limitations, and flow rate should be checked prior to selection of specific components or the valve package size.

42C,D,V STEAM CONNECTIONS — On units with steam heating coils, the maximum steam pressure applied to the unit should never exceed 10 psig. However, when steam is used on a 4-pipe application system with 1-row and 2-row coils the maximum steam pressure should never exceed 5 psig (suitable for only low pressure steam).

Do not drain the steam mains or take-off through the coils. Drain the mains ahead of the coils through a steam trap to the return line. Overhead returns require 1 psig of pressure at the steam trap discharge for each 2 ft elevation to ensure continuous condensate removal.

Proper steam trap selection and installation is necessary. As a guideline in creating a steam trap locate the steam trap discharge at least 12 in. below the condensate return connection. This provides sufficient hydrostatic head pressure to overcome trap losses and ensure complete condensate removal.

42C,D,V DIRECT EXPANSION (DX) REFRIGERANT PIPING — Use the condensing unit manufacturer's recommended line sizes and requirements. Suction line must be insulated for correct operation. Use refrigerant-grade copper lines only. The unit is not applied as a heat pump.

Thermostatic expansion valve (TXV) and sensing bulb are factory-installed on units when DX coil option is chosen with distributor and TXV.

NOTE: If a hot water coil is used in the reheat position, a fieldsupplied freezestat must be installed to protect the coil.

TEST AND INSULATE — When all joints are complete, perform hydrostatic test for leaks. Vent all coils at this time. Check interior unit piping for signs of leakage from shipping damage or mishandling. If leaks are found, notify a Carrier representative before initiating any repairs. Release trapped air from system (refer to Make Final Preparations section).

Never pressurize any equipment beyond specific test pressure. Always pressure test with an inert fluid or gas, such as clear water or dry nitrogen to avoid possible damage or injury in the event of a leak or component failure during testing.

CAUTION

All water coils must be protected from freezing after initial filling with water. Even if system is drained, unit coils may still have enough water to cause damage when exposed to temperatures below freezing.

Following the hydrostatic test, insulate all piping to prevent sweating.

To ensure compliance with building codes, restore the structure's original fire resistance rating by sealing all holes with material carrying the same fire rating as the structure.

DO NOT OVERTIGHTEN! Overtightening will distort (egg shape) the union seal surface and destroy the union.

Table 5 — Piping Components

SYMBOL/SKETCH DESCRIPTION

MANUAL AIR VENT: Threaded brass needle

valve with screwdriver slot for adjustment. Application — Body brazed into high point of

heating and cooling coils for bleeding air from coil. Standard item on all hydronic coils (not used on steam or DX coils). Should not be used in lieu of main system air vents.

AUTOMATIC AIR VENT: Nickel plated brass valve, fiber-disc type, with positive shut-off ballcheck and quick vent feature via knurled vent screw.

Application — Optional replacement for manual air vent. Automatically passes minute quantities of air through the fiber discs which expand upon contact with water, completely sealing the valve. As air accumulates, the fiber discs dry and shrink, repeating the cycle. Not recommended for removing large quantities of air encountered during initial start-up or subsequent draining and refilling. Should not be used in lieu of main system air vents.

SWAGE: Copper tube end expanded to accept a copper tube of the same size for factory or field brazing.

Application — Used where possible for all tubing joints for best joint integrity.

UNION: Combination wrought copper/cast brass union assembly, solder by solder.

Application — Used for quick connect (and disconnect) of valve package components to minimize field labor and facilitate servicing of unit.

INSERTION TEST PORT: Brass body valve for acceptance of test probe (up to diameter).

Application — Installed on one (or both) sides of the coil to allow for temperature or pressure sensing. Used for close tolerance water balancing and service analysis.

/8 in.

FACTOR RATING*

/2 in.

/4 in. PSI F

STEAM

USE

N/A N/A 400 100 NO

N/A N/A 125 240 NO

N/A N/A 300 200 YES

N/A N/A 250 250 NO

LEGEND

Cv — Coefficient of Velocity DX — Direct Expansion

*Check all system component pressure ratings (coils, values,

pumps, etc.) with manufacturer and any applicable local or national piping codes prior to specifying system pressure rating.

NOTES:

1. Motorized 2-way valves have a maximum close-off differential of 25 psi.

2. Motorized 3-way valves have a maximum close-off differential of 10 psi.

Table 5 — Piping Components (cont)

FLOW

SYMBOL/SKETCH DESCRIPTION

PRESSURE TEST PORT: Brass body

service access fitting with removable depressor type core.

Application — Installed on both sides of the coil to allow for pressure sensing. Attach pressure gages to facilitate close tolerance water balancing.

GAGE COCK: Brass shut-off valve with

/4 in. FPT fitting for attachment of pressure

gages. Application — Installed on both sides of the

coil to allow for pressure sensing. Attach pressure gages to facilitate close tolerance water balancing. May be used in bleed bypass line to regulate water flow.

CIRCUIT SETTER: Variable water flow balancing valve with manual adjustment knob, pointer, percent-open scale, memory stop and integral pressure read-out ports.

Application — Used for close tolerance water flow balancing. Positive shut-off ball valve feature allows usage as combination balancing and shut-off valve.

BALANCE VALVE: Variable water flow manual balancing valve with screwdriver slot adjustment screw.

Application — Often used in conjunction with test port fittings for water flow balancing. Balance by temperature differential or coil pressure drop (check specifications for service fittings required if balancing by pressure drop). May be used in 3-way valve bypass line to permit equal flow balancing.

FIXED FLOW VALVE: Flexible orifice type (non-adjustable).

Application — Used for water flow balancing. Valve automatically adjusts the flow to within 10% of set point. Requires 15 psi (35 ft) of additional pump head for proper operation.

/4 in.

FACTOR RATING*

/2 in.

/4 in. PSI F

N/A N/A 400 210 NO

N/A N/A 200 250 N/A

2.12 3.9 300 250 NO

3.0 8.9 150 200 NO

Valve orifice size determines C tor. The orifice of

fac-

these fixed flow valves changes as flow is regulated. As the water pressure increases, the orifice size

150 160 NO

decreases, thereby automatically limiting the flow rate to the specified gpm (±10%).

STEAM

USE

LEGEND

Cv — Coefficient of Velocity DX — Direct Expansion

*Check all system component pressure ratings (coils, values,

pumps, etc.) with manufacturer and any applicable local or national piping codes prior to specifying system pressure rating.

NOTES:

1. Motorized 2-way valves have a maximum close-off differential of 25 psi.

2. Motorized 3-way valves have a maximum close-off differential of 10 psi.

Table 5 — Piping Components (cont)

SYMBOL/SKETCH DESCRIPTION

STRAINER: Y-type body with 50 mesh stain-

less steel screen. Application — Used for removal of small parti-

cles from system water during normal system operation. Should not be used in lieu of main system strainers. Strainer screen may have to be removed during initial high pressure system flushing during start-up. Screen should be removed and cleaned per normal maintenance schedule (provisions for strainer blowdown not provided).

GATE VALVE: Manual shut-off valve. Application — Used for unit isolation during

system flushing, servicing, etc. Do not use for water balancing.

GLOBE VALVE: Standard pattern, manual shut-off and throttling valve.

Application — Used for unit isolation. Not recommended for high flow rates due to relatively high pressure drop.

COMPRESSION STOP VALVE:

Manual shut-off valve. Application — Used for unit isolation during

system flushing, servicing, etc. Not recommended for high flow rates due to relatively high pressure drop.

BALL VALVE: Manual balance and shut-off valve.

Application — Used for unit isolation and water flow balancing. Without memory stop feature water balance point must be marked by installer (if necessary). Check specifications for service fittings required when used for water balancing.

BALL VALVE WITH MEMORY STOP:

Manual balance and shut-off valve. Application — Used for unit isolation and

water flow balancing. The adjustable memory stop feature allows return to the balance point after shut-off. Check specifications for service fittings required when used for water balancing.

LEGEND

Cv — Coefficient of Velocity DX — Direct Expansion

*Check all system component pressure ratings (coils, values,

pumps, etc.) with manufacturer and any applicable local or national piping codes prior to specifying system pressure rating.

FACTOR RATING*

/2 in.

9.0

Clean

/4 in. PSI F

19.0

Clean

400 250 N/A

STEAM

USE

19.8 36.0 200 200 NO

1.8 3.9 200 200 NO

2.3 5.4 150 200 NO

4.0 7.5 400 200 YES

4.0 7.5 400 200 N/A

NOTES:

1. Motorized 2-way valves have a maximum close-off differential of 25 psi.

2. Motorized 3-way valves have a maximum close-off differential of 10 psi.

Table 5 — Piping Components (cont)

SYMBOL/SKETCH DESCRIPTION

2-WAY MOTORIZED VALVE: Electric 2-position flow

control valve (open/closed). Normally closed body with manual override lever. Installed in supply line to unit.

Application — All standard control and valve packages are based upon normally closed valves (valve electrically powered open and closed by spring return when electric power removed). Manual override lever allows valve to be placed in the open position for secondary (unit) flushing, constant water flow prior to start-up, etc. Manual override is automatically disengaged when valve is electrically activated. Consult factory for normally open valve

applications.

FACTOR RATING*

/2 in.3/4 in. PSI F

2.3 2.3 300 200

STEAM

USE

YES

PSI

MAX.

3-WAY MOTORIZED VALVE: Electric 2-position flow control valve (closed to coil/open to bypass or open to coil/closed to bypass). Normally closed with manual override lever. Installed in supply line to unit.

Application — Same comments as 2-way motorized valve except with manual override lever engaged the valve is open to both ports and water flow will take the path of least resistance through the valve package (not necessarily 100% through the coil).

MODULATING VALVE (Optional) (Non-Spring Return, Floating Point Actuator):

Modulating valves are designed to control the flow in the circuit by making incremental adjustments to the flow path within the valve.

Application — To control fluid flow in fan coil units. On the 42DD,SG,SJ,SH commercial fan coil units,

the factory-provided modulating valve has application restrictions. In these models, the valve packages are located in the air stream, downstream of the coil. Due to the ambient temperature limitations of the modulating valves, the valves can be used in the units listed above only with a 2-pipe cooling system.

MODULATING VALVE (Requires ETO [Engineering to Order]) (Spring Return): Modulating valves are designed to

control the flow in the circuit by making incremental adjustments to the flow path within the valve. Application — Same comments as non-spring return except when powered, the actuator moves to the desired position, at the same time tensing the spring return system. When power is removed for more than two minutes the spring returns the actuator to the normal position.

AQUASTAT: Water temperature sensing electrical switch.

Application — Clips directly on nominal size

/4 in. copper tubing for water temperature sensing.

/2 in. or

Must be correctly located for proper control operation.

5.0 5.0

SERVICE

2.8 2.8

BYPASS

4.0

300 200 N/A

LEGEND

Cv — Coefficient of Velocity DX — Direct Expansion

*Check all system component pressure ratings (coils, values,

pumps, etc.) with manufacturer and any applicable local or national piping codes prior to specifying system pressure rating.

NOTES:

1. Motorized 2-way valves have a maximum close-off differential of 25 psi.

2. Motorized 3-way valves have a maximum close-off differential of 10 psi.

Fig. 49 — Copper Water Tube and Joint Material Pressure Ratings

NOTES:

1. Not recommended for high system water pressures.

2. Standard factory joint material.

JOINT MATERIALS

A 50-50 Lead-Tin at 200 F

Note 1

D 95-5 Tin-Antimony at 200 F

Note 2B 50-50 Lead-Tin at 150 F E 95-5 Tin-Antimony at 150 F

C 50-50 Lead-Tin at 100 F F 95-5 Tin-Antimony at 100 F

IMPORTANT: THE ABOVE CHART IS FOR REFERENCE ONLY. Check all system component

pressure ratings (coils, valves, pumps, etc.) and any applicable local or national piping codes prior to specifying system pressure rating.

Step 3 — Make Electrical Connections — Refer

Fig. 50 — Manual Fan Control

NOTES:

1. Motors are thermally protected.

2. Use copper conductors only.

3. See unit nameplate for power supply. Provided disconnect means and overload protection as required.

4. Unit-mounted thermostats are not recommended for fan control because of poor temperature sensing. Fan control not available on 42VC,VE lowboy units.

to unit nameplate for required supply voltage, fan and heater amperage and required circuit ampacity. Refer to unit wire diagram for unit and field wiring. Make sure all electrical connections are in accordance with unit wiring diagram and all applicable codes.

The fan motor(s) should never be controlled by any wiring or device other than the factory-supplied switch or thermostat/ switch combination unless prior factory authorization is obtained. Fan motor(s) may be temporarily wired for use during construction only with prior factory approval and only in strict accordance with the instructions issued at that time.

Floor cabinet type units have factory-wired integral fan switches. Connect power wires to leads in unit junction box per unit wiring diagram. On the other units, install remote fan switch according to job drawings. Hook up switch and power wiring per unit wiring diagram.

Install optional, wall-mounted thermostat per instructions shipped with thermostat. Connect as shown on unit wiring diagram.

Units with factory-supplied and factory-installed aquastats may be shipped with the aquastats mounted on a coil stub-out. If this is the case, remove the aquastat before installing valve package. When reinstalling aquastats, consult the factorypiping diagram in the submittal for proper location. If the valve package is field-supplied, the aquastat must be installed in a location where it will sense the water temperature regardless of the control valve position. A bleed bypass may be required to guarantee proper aquastat operation. The aquastat bypass line allows a small amount of water to flow from the supply to the return piping when the control valve is closed.

NOTE: The aquastat must be able to sense whether the flowing water is being chilled or heated and switches a contact closed to provide automatic summer or winter changeover for the system. When a two-pipe cooling/heating system with optional auxiliary electric heat is desired, an additional aquastat is required.

All field wiring must be in accordance with governing codes and ordinances. Any modification of unit wiring without factory authorization will invalidate all factory warranties and nullify any agency listings.

IMPORTANT: Wiring diagrams shown depict typical

control functions. Refer to unit wiring label for specific

functions.

Units may be equipped with line voltage controls or 24 VAC control systems. The following descriptions are for line voltage controls only. For 24 v control operating sequence, refer to thermostat operating instructions.

STANDARD WIRING PACKAGES M

anual Fan Control — On all vertical cabinet units, the standard fan-speed switch is furnished unit-mounted and wired. See Fig. 50. On all vertical furred-in units and all horizontal units, the switch is shipped separately on a decorative wall plate for field mounting and wiring.

The standard switch has LOW, MEDIUM, HIGH and OFF positions plus an auxiliary contact to energize thermostats, valves, dampers, etc.

NOTE: Wiring diagrams are for 120-v power supply. If other voltages for heaters or controls are specified, wiring may differ from that shown.

Fig. 51 — Thermostatic Fan Control

(2-Pipe System)

NOTES:

1. Motors are thermally protected.

2. Use copper conductors only.

3. See unit nameplate for power supply. Provide disconnect means and overload protection as required.

4. Unit-mounted thermostats are not recommended for fan control because of poor temperature sensing. Fan control not available on 42VC,VE lowboy units.

Fig. 52 — Thermostatic Fan Control

(2-Pipe System with Safety Cycle)

NOTES:

1. Motors are thermally protected.

2. Use copper conductors only.

3. See unit nameplate for power supply. Provide disconnect means and overload protection as required.

hermostatic Fan Control, 2-Pipe Systems — The thermostat cycles the fan on and off from any selected speed setting to maintain selected room temperature. Controls can be wired for heating-only, cooling-only or for heating/cooling by the addition of an automatic changeover device that senses water temperature and changes the action of the thermostat as required. See Fig. 51.

hermostatic Fan Control, 2-Pipe System with Safety Cycle — This control is used for high humidity situations in which condensate problems can occur if fan is turned off while chilled water is still running through the coil.

The wiring provides fan cycling from HIGH to LOW on the cooling cycle and from LOW to OFF on the heating cycle. An ON-OFF toggle switch replaces the standard 3-speed fan switch. The toggle switch can be concealed to ensure that the unit runs on low speed when cooling. This action greatly reduces the chance of condensation problems that exist with other standard fan cycling controls. See Fig. 52.

hermostatic Electric Valve Control, 2-Pipe — A thermostatically controlled 2-position valve provides superior control to fan cycling. With this control, the fan runs continuously unless it is manually switched to the OFF position. The fan must be on before the valve can be opened to supply water to the coil.

This system can be used for normal 2-pipe changeover systems and can also be furnished for cooling-only or heatingonly applications by omitting the changeover and specifying which application is intended. See Fig. 53 and 54 for line voltage control. See Fig. 55 and 56 for 24-v control.

Fig. 53 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling with

Automatic Changeover — Unit-Mounted Thermostat (Line Voltage)

a42-4060

120-V WHT ALL OTHERS BLK



NEC CLASS 1 WIRING

UNIT MOUNTED

J BOX

EQUIPMENT

GROUND

L2 or N

THERMOSTAT PART # 702893-36

MED W/RED

HI W/ORG

L1 BLK

LOW W/BRN

HEAT RED

COOL BLU

PUR

ORG

L2 OR N YEL

VALV E

WHT

BLK

REMOTE DEVICE BOX

*WHT

AQUASTAT

BLK

BLU

RED

BLOWER

MOTOR

H BLK

COM

WHT

BLUM

REDL

PUR

BRN

BLK

ONLY 120V WHT/ALL OTHERS BLK

RED

BLU

BLK

*WHT

NEC CLASS 1 WIRING

RISE

Fig. 54 — 42C,S,V and 42D (600-1000) 2-Pipe Heating and Cooling with Automatic Changeover —

Remote/Wall-Mounted Thermostat (Line Voltage)

Fig. 55 — 42SG,SH,SJ,VA,VB,VF 2-Pipe Heating and Cooling with Automatic Changeover —

Unit-Mounted Debonair

Thermostat (24-v), Duct Sensor

a42-4059

Fig. 56 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Heating and Cooling with

Automatic Changeover — Remote/Wall-Mounted Debonair

Thermostat (24-v)

a42-4061

NEC CLASS 2 WIRING

Fig. 57 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling with Auxiliary Heat —

Unit-Mounted Thermostat (Line Voltage)

a42-4066

120-V WHT ALL OTHERS BLK



NEC CLASS 1 WIRING

hermostatic 2-Pipe Auxiliary Electric Heat with Valve Control — This system, also called twilight or intermediate season electric heat, goes a long way towards solving the spring and fall control problems of 2-pipe systems.

Chilled water can be run late into the fall, turned on early in the spring and heat will still be available to all units whenever required.

In winter the system is switched over to hot water. Two changeover devices are required for this. One device switches the action of the thermostat and the other locks out the electric heat when hot water is in the coil.

With this system, the fan runs continuously unless manually switched to OFF position. Fan must be on before thermostat can send signal to open chilled water valve or turn on electric heater.

Two control methods are available:

1. Use the standard automatic changeover thermostat with a dead band between heating and cooling.

2. Use a manual changeover thermostat. With this method only one changeover is required.

Be sure to include a 2-way or 3-way electric valve with this

system. NOTE: Wiring diagrams are for 120-v power supply. If other

voltages for heaters or controls are specified, wiring may differ from that shown. See Fig. 57 and 58 for line voltage control. See Fig. 59 and 60 for 24-v control.

Fig. 58 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Heating and Cooling with

Auxiliary Heat — Remote/Wall-Mounted Thermostat (Line Voltage) and Dual Power Source

UNIT MOUNTED

J BOX

EQUIPMENT

GROUND

L2 or N

THERMOSTAT PART # 702893-36

W/RED

HI W/ORG

L1 BLK

LOW W/BRN

HEAT RED

COOL BLU

PUR

ORG

L2 OR N YEL

VALV E

REMOTE DEVICE BOX

*WHT

LIMIT SWITCH

AQUASTATS

CONTACTOR

L2 OR N

GRN

*WHT

BLKBLKBLK

*WHT

WHT

BLK

RED

PUR

BRN

RED

*WHT

BLOWER

MOTOR

H BLK

COM

WHT

BLUM

REDL

QUICK CONNECT

OPTIONAL

RED

BLU

BLK

*WHT

ONLY 120V WHT/ALL OTHERS BLK

RISE

BLK

BLU

RED

RISE

BLK

BLU

RED

Fig. 59 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling with Auxiliary Heat —

Unit-Mounted Debonair

Thermostat (24-v), Duct Sensor and Dual Power Source

QUICK CONNECT

G G2/(W) G3/(Y) COM

FAN

(VALVE)

(COOL)

(HEAT)

MED

LOW

TRANSFORMER

ORG YEL

WHT/REDBLK

VALV E

BLK

Q/C

BLK

YEL

BLU

BLK

PUR

RED

ORG

BLK

BLOWER

MOTOR

COM

WHT

BLK H

BLU M

RED L

*WHT

BLK

LIMIT SWITCH

BLK BLK

BRN

WHT

GROUND

EQUIPMENT

RED

BLU BLK

BLK

YEL

THERMOSTAT #33CSSN2-FC

RG3Y1 W1 CG2 H2O CK1RSRS+5

DUCT SENSOR 33CSSEN-DS

RED

BLK

WHT

GROUND

EQUIPMENT

L2 or N

*WHT

BLK

SENSOR

CHANGE OVER

BLK

YEL

RED

BLU

BLK

*WHT

CONTACTOR

ELEC. HEATER

COM

hermostat 2-Pipe Total Electric Heat with Valve Con-

Fig. 60 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Heating and Cooling with

Auxiliary Heat — Remote/Wall-Mounted Debonair

Thermostat (24-v)

a42-4067

NEC CLASS 2 WIRING

T trol — With this system, the complete heating requirement for the space is provided by the electric heater; the water system is never changed over for heating. It is therefore possible, just as with 4-pipe systems, to have heating or cooling at any time of the year.

The fan runs continuously unless it is manually switched to OFF position. Fan must be on before thermostat can send signal to open chilled water valve or turn on electric heater.

Normally, an automatic changeover thermostat with a dead band between heating and cooling is used, but a manual changeover thermostat is also suitable. A 2-way or 3-way valve must also be used so that the chilled water is off whenever the heater is on. No changeover device to sense water temperature is necessary.

NOTE: Wiring diagrams are for 120-v power supply. If other voltages for heaters or controls are specified, wiring may differ from that shown. See Fig. 61 and 62 for line voltage control. See Fig. 63 and 64 for 24-v control.

Fig. 61 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Cooling with Total Electric Heat —

Unit-Mounted Thermostat (Line Voltage)

a42-4073

120-V WHT ALL

OTHERS BLK



NEC CLASS 1 WIRING

Fig. 62 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Cooling with Total Electric Heat —

Remote/Wall-Mounted Thermostat (Line Voltage)

Fig. 63 — 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Cooling with Total Electric Heat —

Unit-Mounted Debonair

Thermostat (24-v) and Duct Sensor

a42-4072

NOTE: Units may have 2 or 4 elements. Elements wired in parallel.

Fig. 64 — 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Cooling with Total Electric Heat —

Remote/Wall-Mounted Debonair

Thermostat (24-v) and Dual Power Source

THERMOSTAT #33CSSN2-FC

RG3Y1 W1 CG2 H2O CK1RSRS+5

REMOTE DEVICE BOX

QUICK CONNECT

NEC CLASS 2 WIRING

(HEAT)

(COOL)

(VALVE)

FAN

GROUND

EQUIPMENT

L2 or N

EQUIPMENT

GROUND

BLK

WHT

TRANSFORMER

*WHT

BLK

ORG

*WHT

WHT/RED

YEL

LOW

Q/C

BLK

YEL

33ZCRLYBRD

G3/(Y)

G2/(W)

COM

RED

ORG

PUR

BLK

BRN

BLU

YEL

*WHT WHT

COM

BLK

BRN

MED

LIMIT SWITCH

BLK

RED

BLK

BLU

LRED

BLU

BLK

MOTOR

BLOWER

COOL

VALV E

ELEC. HEATER

COM

Fig. 65 — 42SG,SH,SJ,VA,VB,VC,VE,VF 4-Pipe Heating and Cooling —

Unit-Mounted Thermostat (Line Voltage)

a42-4079

120-V WHT ALL OTHERS BLK



NEC CLASS 1 WIRING

hermostatic Valve Control, 4-Pipe — The 4-pipe system provides the ultimate in economy and room temperature control. Both hot water and chilled water are available at any time.

Normally an automatic changeover thermostat is used, but a manual changeover thermostat is also suitable. Two 2-way valves, two 3-way valves, or one 2-way plus one 3-way valve must be selected. An automatic changeover device to sense water temperature is not required.

With this system, the fan runs continuously unless it is manually switched to OFF position. Fan must be on before thermostat can send signal to open the chilled water or hot water valve.

NOTE: Wiring diagrams are for 120-v power supply. If other voltages for heaters or controls are specified, wiring may differ from that shown. See Fig. 65 and 66 for line voltage control. See Fig. 67 and 68 for 24-v control.

Fig. 66 — 42C,S,V (except VG), and 42D (600-1000 cfm) 4-Pipe Heating and Cooling —

Remote/Wall-Mounted Thermostat (Line Voltage)

ONLY 120V WHT/ALL OTHERS BLK

Fig. 67 — 42SG,SH,SJ,VA,VB,VC,VE,VF 4-Pipe Heating and Cooling —

Unit-Mounted Debonair

Thermostat (24-v) and Duct Sensor

a42-4078

Fig. 68 — 42C,S,V (except VG), and 42D (600-1000 cfm) 4-Pipe Heating and Cooling —

Remote/Wall-Mounted Debonair

Thermostat (24-v)

THERMOSTAT #33CSSN2-FC

RG3Y1 W1 CG2 H2O CK1RSRS+5

QUICK CONNECT

REMOTE DEVICE BOX

NEC CLASS 2 WIRING

33ZCRLYBRD

G G2/(W) G3/(Y) COM

FAN

(VALVE)

(COOL)

(HEAT)

MED

LOW

TRANSFORMER

YEL

BLK

VALV E

BLK

Q/C

BLK

YEL

BLU

BLK

PUR

RED

ORG

BLK

BLOWER

MOTOR

COM

WHT

BLK H

BLU M

RED L

COOL

GROUND

EQUIPMENT

L2 or N

*WHT

BLK

*WHT

BRN

BLK

HEAT

VALV E

BLK

Q/C

YEL

BRN

PUR

RED

BLU

BLK

YEL

Step 4 — Make Duct Connections — Install all

ductwork to and from unit in accordance with all applicable codes. Duct construction must allow unit to operate within duct external static pressure limits as shown on job submittals. Units designed to operate with ductwork may be damaged if operated without intended ductwork attached.

Units provided with outside air should have some method

of low-temperature protection to prevent freeze-up.

Insulate ductwork as required. Use flexible connections to minimize duct-to-unit alignment problems and noise transmission where specified.

Set unit markings for minimum clearance to combustible materials and first 3 ft of ductwork. Install ductwork, accessory grilles and plenums so that they do not restrict access to filter. Cut openings for supply-air and return-air grilles, thermostats and switch plates where specified on job drawings. Be careful not to cut wires, piping or structural supports. Use a steel thermostat shield ring to protect drywall from thermostat wiring where applicable.

Do not secure wallboard to drain pan edges or to control

box enclosure. Condensate leaks or electrical shorts may result.

An alternate method of enclosing the unit is to frame one or more sides with studding and apply the wall board to this framing. This method requires specific unit features and return access panels when used on the return-air side of a unit. Units not properly equipped will exhibit poor cooling and/or heating performance and could experience excessive or premature component failures.

Prevent sheetrock dust or other debris from settling on coil fins, motor-blower assembly or other unit interior surfaces.

Return access and exposed cabinet units may be furnished with a baked enamel finish. Small scratches in this finish may be repaired with touch-up paint available from the factory. Some colors of touch-up paint are available in aerosol containers and all touch-up paint is available in pint, quart, and gallon cans.

To repaint the factory-baked enamel, the finish should be prepared by light sanding with no. 280 grit sand paper or no. 000 or no. 0000 fine steel wool. The surface may also be

Prevent dust and debris from settling in unit. If wall finish

CAUTION

or color is to be spray applied, cover all openings to prevent spray from entering unit. Failure to do so could result

in the reduction of unit efficiency.

Step 5 — Frame and Finish Unit — Models 42SG,

SH and SJ have factory enclosures and may be finished with normally accepted wall covering. However, drywall secured with adhesive bonding alone is not recommended.

Use low-profile sheet metal panhead screws to secure

wallboard to unit frame.

Do not apply sheet metal screw or nails where they can pen-

etrate coil, riser pipes, or electrical junction box and raceways.

wiped with a liquid surface etch cleaning product such as “No Sand” or “Pasceo.” These items should be available at most paint product stores. It should be noted that the more conscientiously this preparation is done, the more effective it will be.

After this preparation is accomplished, the factory finish should provide excellent adhesion for a variety of air-dried top coats. Enamel will give a more durable, higher gloss finish, while latex will not adhere as well and will give a dull, softer finish. Top coats involving an exothermic chemical process between two components, such as epoxies and urethanes, should be avoided.

light “dust coats” to isolate the factory-baked enamel finish from the quick drying touch-up paint.

Factory aerosol touch-up paint may require a number of

Step 6 — Cut out Openings for Grilles and Thermostats —

return-air grilles, dampers, thermostats, and switch plates, cut out openings where specified on the job plans. Be careful not to cut wires, piping or structural supports.

For remote-mounted thermostats use a steel thermostat shield ring to protect drywall from thermostat wiring where applicable.

Prevent dirt, dust, and debris from settling in unit. If wall finish or color is to be spray applied, cover all openings to prevent overspray entering unit.

On all units with optional supply-air or

Step 7 — Make Final Preparations

1. Turn off power to the unit (open unit electrical disconnect).

2. Install thermostats and perform any other final wiring as applicable.

3. Clean dirt, dust, and other construction debris from unit interior. Be sure to check fan wheel and housing.

4. Rotate fan wheel by hand to be sure it is free and does not rub housing. Check that wing nuts securing fan assembly to fan deck are tight.

5. Ensure all panels and filters are installed before checking fan operation. Turn on power to the unit.

6. Install filter in frame at front of coil. If field-supplied filters are used, be sure size is as specified in Tables 1-4.

IMPORTANT: Do not start up or operate unit without filter. Be sure filter and unit interior are clean.

7. Check the fan and motor operation. The fan switch is located in a switch box behind spring-loaded access door on unit cabinet or is wall-mounted. Speeds are marked on switch plate as follows:

OFF H - High Speed M - Medium Speed L - Low Speed

Rotate knob clockwise to desired speed. To turn off, rotate knob counterclockwise to OFF.

8. Be sure drain line is properly and securely positioned and that the line is clear. Pour water into drain to check operation.

9. Vent all air from unit coil and related piping. If air vent is manual, release air from system by turning air vent screw 1 When steady steam of water begins to escape, close valve. If air vent is automatic, trapped air will be vented automatically. Vent release air slowly, usually dripping water into drain pan in the process.

Make sure all service valves are open and that the motorized control valves, if supplied, are set for automatic operation.

10. Check all control valves in the system for proper operation in accordance with valve manufacturer's instructions.

11. For units with factory-installed balancing valves, adjust as follows:

a. Butterfly Valves — Turn valve gate by inserting

a. Ball Valves with Lever Handles — Valve gate

/2 turns counterclockwise with screwdriver.

screwdriver into slot in valve top and rotating up to 90 degrees. Valve is fully open when slot is parallel with valve body. When slot is perpendicular to body, flow through valve is at minimum. Valve does not seal against flow.

action is similar to butterfly valves above except that when handle is perpendicular to valve body,

there is no flow through valve. Ball valves may be used as shutoff valves.

START-UP

Start-up procedures vary depending on time of year (summer or winter) and building characteristics (new building/old building, occupied/unoccupied, etc.)

Start-up in the cooling mode requires that proper care be given to avoid condensation problems. Condensation forms on surfaces that are colder than the dew point of the surrounding air. If a unit is started and is piped with low-temperature chilled water in a hot, humid atmosphere, condensation will form on many parts of the unit. In order to avoid excessive condensation, higher temperature water should initially be used (approximately 65 to 70 F) and set the fan coil control at low or medium fan speed. Be sure the fan current does not exceed motor nameplate values. Also, the building should be as completely closed as possible and outside air supply fans, and bathroom and kitchen exhaust fans should be off.

As the building temperature drops, the chilled water temperature can be gradually reduced until it reaches 50 F. At this point the outside air fans can be turned on. When the chilled water temperature is reduced to its design point, the exhaust fans can be turned on.

SERVICE

Excessive Condensation on Unit —

water through a fan coil unit with the unit fan off can cause excessive condensation. If fan cycling is used, a water flow control valve should be installed to shutoff the water when the fan stops.

Other methods of control, which avoids condensation problems, are as follows:

1. Continuous fan operation with motorized chilled water valve controlled by a thermostat.

2. Continuous fan operation with thermostat control to switch fan from high to low speed (instead of off).

Running chilled

To Clean Coil

1. Be sure electrical service switch is open, locked, and tagged while working on unit.

2. Remove return-air grille access panel and brush between coil fins with stiff wire brush. Follow-up by cleaning with vacuum cleaner. If coil is cleaned with air hose and nozzle, take care not to drive dirt and dust into other components.

3. Install clean filter. Refer to Clean or Replace Air Filters section.

Coil Air Vent (Manual or Automatic) — Turn vent

cap clockwise (closed) while filling system; turn counterclockwise (open) to vent air. Tighten clockwise after venting. Turn automatic vent cap slightly counterclockwise until water leaks at about 10 drops per minute. Leak will stop within one-half minute.

Check Drain — Lock open and tag unit electrical service

switch.

Check drain pan, drain line and trap at start of each cooling season. A standard type pipe cleaner for used to ensure that pipe is clear of obstruction so that condensate is carried away. Check the drain line at filter cleaning time during the cooling season. Be sure that debris has not fallen into unit through supply-air grille.

/4-in. ID pipe can be

Fan Motor Bearings — Lock open and tag unit electri-

cal service switch.

Standard motors are permanently sealed and lubricated. No lubrication is required unless special motors have been supplied or unusual operating conditions exist.

Clean Fan Wheel — Lock open and tag unit electrical

service switch.

For access to fan assembly, remove front or bottom panel. Fan assembly may be removed from its tracks if unit has a long conduit lead. Use a stiff brush or vacuum to remove dirt and debris from scroll. Wipe all fan surfaces with a damp cloth.

Clean Electric Heater — Lock open and tag unit elec-

trical service switch.

1. Remove dust, dirt, or foreign material before start-up. Do not block normal airflow to and from units; blockage may damage electric heaters.

2. Clean heater elements with soft brush or vacuum cleaner as necessary.

3. To replace blown fusible links (nichrome heaters only): a. Remove fan deck (horizontal units only) for

access to heater.

b. Remove nut securing link at each end; install new

link; reinstall nuts.

c. Reinstall fan deck (if removed).

Electric resistance heaters typically require no normal periodic maintenance when unit air filters are changed properly. The operation and service life may be affected by other conditions and equipment in the system. The two most important operating conditions for an electric heater are proper airflow and proper supply voltage. High supply voltage and/or poorly distributed or insufficient airflow over the element will result in element overheating. This condition may result in the heater cycling on the high-limit thermal cutout. The high-limit thermal cutout device is a safety device only and is not intended for continuous operation. With proper unit application and operation, the high-limit thermal cutout will not operate. This device only operates when a problem exists, and ANY condition that causes high-limit cutout MUST be corrected immediately. High supply voltage also causes excessive amperage draw and may trip the circuit breaker or blow the fuses on the incoming power supply.

After proper airflow and supply power are assured, regular filter maintenance is important to provide clean air over the heater. Dirt that is allowed to deposit on the heating element will cause hot spots and eventual element burn through. These hot spots will normally not be enough to trip the high-limit thermal cutout device and may not be evident until actual heater element failure.

Clean or Replace Air Filters — Lock open and tag

unit electrical service switch.

At the start of each cooling season and after each month of operation (more or less depending on operating conditions) replace throwaway filter or clean permanent filter.

THROWAWAY FILTER — Replace filter with a good quality filter of the size shown in Tables 1-4. Do not attempt to clean and reuse disposable filters.

PERMANENT FILTER (FIBERGLASS TYPE)

1. Tap on solid surface to dislodge heavy particles.

2. Wash in hot water. If needed, use mild solution of commercial solvent such as sal soda or trisodium phosphate.

3. Set filter on end so that water drains out through slots in frame. Allow filter to dry thoroughly.

4. Recharge filter with Film-Cor or similar recharging oil. Three ounces is sufficient for medium size filter. Oil may be applied by insect spray gun. For easier spraying, the oil can be warmed.

If the filter is dipped in the recharging oil, remove it immediately and allow draining through slots in frame.

5. Replace filter in unit.

If another type of filter is used, follow the filter manufacturer's instructions.

Warranty — All equipment and components sold through

the Parts Department are warranted under the same conditions as the standard manufacturer's warranty with the exception that the warranty period is thirty (30) days unless the component is furnished as a warranty replacement. Parts furnished as warranty replacements are warranted for the remaining term of the original unit warranty or not less than thirty (30) days.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53420004-01 Printed in U.S.A. Form 42-3SI Pg 70 12-09 Replaces: 42-2SI

START-UP CHECKLIST FOR 42C,D,S,V SERIES FAN COIL AIR CONDITIONERS

I. Project Information

Job Name _______________________________________________________________________

Address ________________________________________________________________________

City ______________________________________________State __________ Zip __________

Installing Contractor _______________________________________________________________

Sales Office _____________________________________________________________________

Start-up Performed By _____________________________________________________________

INSPECTION, INSTALLATION, AND START-UP CHECKLIST

ITEM COMPLETE ITEM COMPLETE Receiving & Inspection Electrical Connections

1. Unit received undamaged 33. Refer to unit wiring diagram

2. Unit received complete as ordered 34. Connection incoming power service(s)

3. “Furnish only” parts accounted for 35. Install and connection “furnish only” parts

4. Unit arrangement/hand correct 36. All field wiring in code compliance

5. Unit structural support complete and correct Unit Start-Up Handling & Installation 37. General visual unit and system inspection

6. Mounting grommets/isolators used 38. Check for proper fan rotation

7. Unit mounted level and square 39. Record electrical supply voltage

8. Proper access provided for unit and accessories 40. Record ambient temperatures

9. Proper electrical service provided 41. Check all wiring for secure connections

10. Proper overcurrent protection provided 42. Close all unit isolation valves

11. Proper service switch/disconnect provided 43. Flush water systems

12. Proper chilled water line size to unit 44. Fill systems with water/refrigerant

13. Proper hot water line size to unit 45. Vent water systems as required

14. Proper refrigerant line sizes to unit 46. All ductwork and grilles in place

15. Proper steam line sizes to unit 47. All unit panels and filters in place

16. Proper steam condensate trap on return line 48. Start fans, pumps, chillers, etc.

17. Proper steam supply pressure to unit (10 psi max) 49. Check for overload condition of all units

18. All service to unit in code compliance 50. Check all ductwork and units for air leaks

19. All shipping screws and braces removed 51. Balance air systems as required

20. Unit protected from direct & foreign matter 52. Record all final settings for future use Cooling/Heating Connections 53. Check piping and ductwork for vibration

21. Protect valve package components from heat 54. Check all dampers for proper operation

22. Mount valve packages 55. Verify proper cooling operation

23. Connect field piping to unit 56. Verify proper heating operation

24. Pressure test all piping for leaks 57. Reinstall all covers and access panels

25. Install drain line and traps as required

26. Insulate all piping as required

27. Install drip lip under piping as required

Ductwork Connections

28. Install ductwork, fittings, and grilles as required

29. Flexible duct connections at unit

30. Proper supply and return grille type and size used

31. Control outside air for freeze protection

32. Insulate all ductwork as required

CL-1

42 Series Fan Coil Air Conditioner Maintenance Data Log

NOTE: Indicate repairs made, refrigerant added or removed (include amounts), field controls and valve packages added.

__________________________________________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________________________________

MODEL

NUMBER

SERIAL NUMBER

QTY FAN AND MOTOR

FILTER

TYPE

COOLING HEATING

RH LH CFM ESP WATTS

EAT

db/wb

°F

EWT

°F

GPM

TOTAL

BTUH

SENSIBLE

BTUH

EAT

db/wb

°F

EWT

°F

GPM

STEAM

PSI

BTUH kW VOLTAGE

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53420004-01 Printed in U.S.A. Form 42-3SI CL-2 12-09 Replaces: 42-2SI

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

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Carrier 42V, 42C, 42D, 42S User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual