Carrier 48HJD005-007 User Manual

48HJD005-007, 48HJE/HJF004-007

48HJL/HJM/HJN/HJG/HJH/HJK004-006 (LOW NOx)

Single-Package Rooftop Heating/Cooling

Installation, Start-Up and

Service Instructions

CONTENTS

Page

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . . . 1

•ROOF CURB

• SLAB MOUNT

Step 2 — Field Fabricate Ductwork . . . . . . . . . . . . . . . 3

Step 3 — Install External Trap for

Condensate Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Step 4 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 3

• POSITIONING

Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . . . . 4

Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . . . . . 4

Step 7 — Make Electrical Connections . . . . . . . . . . . 4

• FIELD POWER SUPPLY

• FIELD CONTROL WIRING

• HEA T ANTICIPATOR SETTINGS

Step 8 — Adjust Factory-Installed Options . . . . . . . 8

• MOISTUREMISER DEHUMIDIFCATION PACKAGE

• APOLLO CONTROL

• DISCONNECT SWITCH

• OPTIONAL DURABLADE ECONOMIZER

• OPTIONAL ECONOMI$ER

Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . . 19

• BELT-DRIVE MOTORS

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-32

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-38

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 39-45

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can

be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func-

tions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the li terature, ta gs and label s attached t o the uni t, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.

Before performing service or maintenance operations on unit, turn off main power switch to unit and insta ll lockout tag. Ensure electrical service to rooftop unit agrees with voltage and amperage listed on the unit rating plate. Electrical shock could cause personal injury.

Disconnect gas piping from unit when leak testing at pressure greater than 1/2 psig. Pressures greater than damage resulting in hazardous condition. If gas valve is subjected to pressure greater than

psig, it

pressure testing field-supplied gas piping at pressures of to such piping must be isolated by manually closing the gas valve(s).

/2 psig will cause gas valve

must

be replaced before use. When

/2 psig or less, a unit connected

INSTALLATION

Unit is shipped in the vertical discharge configuration. To convert to horizontal discharge application, remove duct opening covers. Using the same screws, install covers on duct openings in basepan of unit with insulation-side down. Seals around openings must be tight.

NOTE: Any combination of supply and return ducting is permissible, i.e., vertical supply combined with horizontal return.

Step 1 — Provide Unit Support

ROO F CU R B — Assemble and instal l acces sory roof curb in accordance with instructions shipped with curb. See Fig. 1. Install insulation, cant strips, roofing felt, and counter flashing as shown. If electric control power or gas service is to be routed through the basepan, attach the accessory thru-the-bottom service connections to the basepan in accordance with the accessory installation instructions. Connections must be installed before unit is set on roof curb.

Fig. 2. This is necessary for unit drain to function properly. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

SLAB MOUNT (Horizontal Units Only) — Provide a level concrete slab that extends a minimum of 6 in. beyond unit cabinet. Install a gravel apron in front of condenser-coil air inlet to prevent grass and foliage from obstructing airflow.

NOTE: Horizontal units may be installed on a roof curb if required.

Ductwork must be attached to curb, not to the unit.

IMPORTANT: The gasketing of th e unit to the roof curb

is critical for a watertight seal. Install gasket supplied

with the roof curb as shown in Fig. 1. Improperly

applied gasket can result in air leaks and poor unit

performance.

Curb should be level. Unit leveling tolerances a re shown in

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

Book 1 4 Ta b 1 a 6 a

PC 111 Catalog No. 534-767 Printed in U.S.A. Form 48HJ-18SI Pg 1 9-00 Replaces: 48HJ-17SI

48/50HJ

UNIT SIZE

“A”

ROOF CURB

ACCESSORY

004-007

CRRFCURB001A00 1′-2″ [356]

CRRFCURB002A00 2′-0″ [610]

CONNECTOR

“G”

“F”

“E”

D ALT

PKG. ACCY.

CRBTMPWR001A00

CRBTMPWR003A00

″

[12.7] NPT

CONTROL

″ [19] NPT

POWER

″

GAS

[12.7] NPT

″ [31.7] CRBTMPWR002A00 /

[19] NPT

″ [31.7] CRBTMPWR004A00

″ [19] NPT

″

[19] NPT

[12.7] NPT

″

[44.5]

and 002A00 are for thru-the-curb connec-

tions. Packages CRBTMP003A00 and

6. Service clearance 4 ft on each side.

7. Direction of airflow.

004A00 are for thru-the-bottom connections.

8. Connector packages CRBTMPWR001A00

Fig. 1 — Roof Curb Details

DRAIN HOLE

1′-4″

[406]

″

[551]

1′-9

UNIT SIZE B C

50HJF004-007

48HJD004-007

NOTES:

disassembled.

1. Roof curb accessory is shipped

rest on curb).

2. Insulated panels.

3. Dimensions in [ ] are in millimeters.

4. Roof curb: galvanized steel.

5. Attach ductwork to curb (flanges of duct

MAXIMUM ALLOWABLE

DRAIN PLUG

CONDENSATE PAN (SIDE VIEW)

NOTE: Drain plug is shown in factory-installed position.

Fig. 3 — Condensate Drain Pan

DIFFERENCE (in.)

A-B B-C A-C

0.5 1.0 1.0

Fig. 2 — Unit Leveling Tolerances

Step 2 — Field Fabricate Ductwork —

Secure all

ducts to roof curb and building structure on vertical discharge

Do not connect ductwork to unit.

units.

For horizontal applications, field-supplied isolation flanges should be attached to horizontal discharge openings and all ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

Ducts passing through an unconditioned space must be in-

sulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.

A minimum clearance is not required around ductwork. Cabinet return-air static shall not exceed –.35 in. wg with Durablade economizer, or –.30 in. wg with EconoMi$er, or –.45 in. wg without economizer.

These units are designed for a minimum continuous returnair temperature in heating of 50 F (dry bulb), or an intermittent operation down to 45 F (dry bulb), such a s when used with a night setback thermostat.

Step 3 — Install External Trap for Condensate Drain —

located on the bottom and side of the unit. Unit discharge connections do not determine the use of drain connections; either drain connection can be used with vertical or horizontal applications.

When using the standard side drain connection, ensure the plug (Red) in the alternate bottom connection is tight before installing the unit.

To use the bottom drai n connec tion for a roof curb i nstallation, relocate the factory-installed plug (Red) from the bottom connection to the side connection. See Fig. 3. The piping for the condensate drain and external trap can be completed after the unit is in place.

All units must have an external trap for condensate drainage. Install a trap 4-in. deep and protect against freeze-up. If drain line is installed downst ream from the ext ernal t rap, pitch the line away from the unit at 1 in. per 10 ft of run. Do not use a pipe size smaller than the unit connection (

Step 4 — Rig and Place Unit —

transportation damage, and file any claim w ith transportation agency. Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit, and rollers may be used to move unit across a roof. Level by using unit frame as a

The unit’s 3/4-in. condensate drain connections are

/4 in.).

Inspect unit for

reference. See Table 1 and Fig. 4 for additional information. Operating weight is shown in Table 1 and Fig. 4.

Lifting holes are provided in base rails as shown in Fig. 5.

Refer to rigging instructions on unit.

All panels must be in place when rigging and lifting.

POS ITION ING — Maintain cl earan ce around and a bove unit to provide minimum distance from combustible materials, proper airflow, and service access. See Fig. 5. A properly positioned unit will have the following clearances between unit and roof

/4-in. clearance between roof curb and base rails on each

curb; side and duct end of unit;

/4 in. clearance between roof curb and

condenser coil end of unit. (See Fig. 1, section C-C.)

Do not install unit in an indoor location. Do not locate unit air inlets near exhaust vents or other sources of contami nated air.

Be sure that unit is installed such that snow will not block the combustion intake or flue outlet.

Unit may be installed directly on wood flooring or on Class A, B, or C roof-covering material when roof curb is used.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

Locate mechanical draft system flue assembly at least 48 in. from any opening through which combustion products could enter the building, and at least 48 in. from an adjacent building. When unit is located adjacent to public walkways, flue assembly must be at least 7 ft above grade.

NOTE: When unit is equipped with an accessory flue discharge deflector, allowable clearance is 18 inches.

Flue gas can deteriorate building materials. Orient unit such that flue gas will not affect building materials.

Adequate combustion-air space must be provided for proper operation of this equipment. Be sure that installation complies with all local codes and Section 5.3, Air for Combustion and Ventilation, NFGC (National Fuel Gas Code), ANSI (American National Standards Institute) Z223.1-1984 and addendum Z223.1a-1987. In Canada, installation must be in ac cordance with the CAN1.B149.1 and CAN1.B149.2 installation codes for gas burning appliances.

Flue vent discharge must have a minimum horizontal clearance of 4 ft from electric and gas meters, gas regulators, and gas relief equipment.

After unit is in position, remove shipping materials and rigging skids.

NOTES:

1. Place unit on curb as close as possible to the duct end.

2. Dimension in ( ) is in millimeters.

3. Hook rigging shackles through holes in base rail as shown in detail ‘‘A.’’ Holes in base rails are centered around the unit center of gravity. Use wooden top skid when rigging to prevent rigging straps from damaging unit.

4. Weights include base unit without economizer. See Table 1 for unit operating weights with accessory economizer.

All panels must be in place when rigging.

Fig. 4 — Rigging Details

UNIT 48HJ

004 005 006 007

MAX

WEIGHT

lb kg in. mm in. mm in. mm

530 240 73.69 1872 35.50 902 33.31 847 540 245 73.69 1872 35.50 902 33.31 847 560 254 73.69 1872 35.50 902 33.31 847 615 279 73.69 1872 35.50 902 33.31 847

“A” “B” “C”

Step 5 — Install Flue Hood —

Flue hood is shipped screwed to the burner compartment access panel. Remove from shipping location and, using screws provided, install flue hood in location shown in Fig. 5 and 6.

For units being installed in California Air Quality Manage-

ment Districts which require NO

emissions of 40 nanograms/

joule or less, kit CRLOWNOX001A00 must be installed.

Step 6 — Install Gas Piping —

Unit is equipped for use with type of gas shown on nameplate. Refer to local building codes, or in the absence of local codes, to ANSI Z223.1-1984 and addendum Z223.1A-1987 entitled National Fuel Gas Code. In Canada, installation must be in accordance with the CAN1.B149.1 and CAN1.B149.2 installation codes for gas burning appliances.

For natural gas applications, gas pressure at unit gas c onnection must not be less than 4 in. wg or greater than 13 in. wg while the unit is operating. On 48HJ005-007 high-heat units, the gas pressure at unit gas connection must not be less than 5 in. wg or greater than 13 in. wg while the unit i s operating. For propane applications, the gas pressure must not be less than 5 in. wg or greater than 13 in. wg at the unit connection.

Size gas supply piping for 0.5 in. wg maximum pressure drop. Do not use supply pipe smaller than unit gas connection.

Support gas piping as shown in the table in Fig. 7. For example, a

/4-in. gas pipe must have one field-fabricated support beam every 8 ft. Therefore, an 18-ft long gas pipe would have a minimum of 3 support beams, and a 48-ft long pipe would have a minimum of 6 support beams.

See Fig. 7 for typical pipe guide and locations of external

manual gas shutoff valve.

Step 7 — Make Electrical Connections

Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code), ANSI/NFPA (National Fire Protection Association), latest edition, and local electrical code s.

gas piping as an electrical ground.

Failure to fo llow this warning could result in the installer being liable for personal injury of others.

FIELD PO WER S UPPLY — All units except 208/230-v units are factory wired for the voltage shown on the nameplate. If the 208/230-v unit is to be connected to a 208-v power supply, the transformer

must

be rewired by moving the black wire from the 230-v terminal on the transformer and connecting it to the 200-v terminal from the transformer.

Refer to unit label diagram for additional information. Pigtails are provided for field service. Use factory-supplied splices or UL (Underwriters’ Laboratories) approved copper connector.

When installing units, provide a disconnect per NEC.

All field wiring must comply with NEC and local requirements.

Do not use

Table 1 — Physical Data

BASE UNIT 48 HJE/F/H/K/M/N004 HJD/E/F/G/H/K/L/M/N005 HJD/E/F/G/H/K/L/M/N006 HJD/HJE/HJF007 NOMINAL CAPACITY OPERATING WEIGHT (lb)

Unit With Durablade Economizer With EconoMi$er With MoistureMiser Dehumidification Package Roof Curb

COMPRESSOR

Quantity Oil (oz)

REFRIGERANT TYPE

Operating Charge (lb-oz) Standard Unit Unit With MoistureMizer Dehumidification Package

CONDENSER FAN

Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm Watts Input (Total)

CONDENSER COIL

Standard Unit

Rows...Fins/in. Total Face Area (sq ft)

Unit with MoistureMiser Dehumidification Package

Rows...Fins/in. Total Face Area (sq ft)

EVAPORATOR FAN

Quantity...Size (in.) Nominal Cfm Maximum Continuous Bhp Std

Motor Frame Size Std

Fan Rpm Range Std

Motor Bearing Type Maximum Fan Rpm Motor Pulley Pitch Diameter

A/B (in.)

Nominal Motor Shaft Diameter (in.) Std

Fan Pulley Pitch Diameter (in.) Std

Belt — Type...Length (in.) Std

Pulley Center Line Distance (in.) Speed Change per Full Turn of

Movable Pulley Flange (rpm)

Movable Pulley Maximum Full

Turns from Closed Position

Factory Setting — Full Turns Open Std

Factory Speed Setting (rpm) Std

Fan Shaft Diameter at Pulley (in.)

EVAPORATOR COIL

Rows...Fins/in. Total Face Area (sq ft)

Hi-Static

Std

Hi-Static

Std

Hi-Static

Std

Hi-Static

LEGEND *Single phase/three phase.

Bhp —

Brake Horsepower

34 5 6

530 540 560 615 564 574 594 649 577 587 607 662 548 558 578 633 115 115 115 115

11 1 1

42 53 50 60

Scroll

R-22

5- 8 8-6 10- 0 9-10 8-13 11-2 12-13 13- 6

1...22 1...22 1..22 1...22 3500 3500 4100 4100

/4...825

180 180 320 320

/4...825

Propeller

/4...1100

Enhanced Copper Tubes, Aluminum Lanced Fins

1...17 2..17 2...17 2...17

14.6 16.5 16.5 16.5

1...17 1...17 1...17 1...17

3.9 3.9 3.9 3.9

1...10 x 10 1...10 x 10 1...10 x 10 1...10 x 10 1200 1600 2000 2400

1.20 1.20 1.30/2.40* 2.40

2.40 2.40 2.90 2.90 48 48 48/56* 56 56 56 56 56

760-1090 840-1185 1020-1460/1120-1585* 1120-1585

1075-1455 1075-1455 1300-1685 1300-1685

Ball Ball Ball Ball

2100 2100 2100 2100

1.9/2.9 1.9/2.0 2.4/3.4 2.4/3.4

2.8/3.8 2.8/3.8 3.4/4.4 3.4/3.4

4.5 4.0 4.0 4.0

4.5 4.0 4.5 4.5

1...A...33 1...A...33 1....4...40 1...A...38

1...A...39 1...A...39 1...A...40 1...A...40

10.0-12.4 10.0-12.4 14.7-15.5 14.7-15.5 65 70 75 95 65 65 60 60

55 6 5 66 5 5 33 3 3

890 980 1240 1304

1233 1233 1396 1396

Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Metering Device

2...15 2...15 4...15 4...15

5.5 5.5 5.5 5.5

†Indicates automatic reset.

**48HJD005-007 and 48HJE004 (72,000 Btuh heat input) units have 2 burners.

48HJE005-007 and 48HJF004 (115,000 Btuh heat input) units and 48HJF005007 (150,000 Btuh Heat input) units have 3 burners.

††An LP kit is available as an accessory.

||Three-phase standard models have heating inputs as shown. Single-phase

standard models have one-stage heating with heating input values as follows:

***California compliant three-phase models.

†††California SCAQMD compliant low NO

are controlled to 40 nanograms per joule or less.

Centrifugal Type, Belt Drive

31/

48HJE004, 48HJD005,006 — 72,000 Btuh 48HJF004, 48HJE005,006 — 115,000 Btuh 48HJF005,006 — 150,000 Btuh

31/

models have combustion products that

31/

Table 1 — Physical Data (cont)

BASE UNIT 48 HJE/F/H/K/M/N004 HJD/E/F/G/H/K/L/M/N005 HJD/E/F/G/H/K/L/M/N006 HJD/HJE/HJF007 FURNACE SECTION

Rollout Switch Cutout Temp (F)†

Burner Orifice Diameter (in. ...drill size)**

Natural Gas — Std HJE

Liquid Propane — Alt††

Thermostat Heat Anticipator Setting (amps) 208/230/460 v

First Stage Second Stage

Gas Input (Btuh)

First Stage/Second Stage HJE

Efficiency (Steady State) (%)

Temperature Rise Range

Manifold Pressure (in. wg)

Natural Gas — Std

Liquid Propane — Alt†† Maximum Static Pressure (in. wg) Field Gas Connection Size (in.)

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief Cutout Reset (Auto.)

LOSS-OF-CHARGE SWITCH/LOW-PRESSURE

SWITCH (Liquid LIne) (psig) Cutout Reset (Auto.)

FREEZE PROTECTION THERMOSTAT

Opens (F) Closes (F)

OUTDOOR-AIR INLET SCREENS

Quantity...Size (in.)

RETURN-AIR FILTERS

Quantity...Size (in.)

LEGEND *Single phase/three phase.

Bhp —

Brake Horsepower

195 195 195 195

.113...33

HJF

.113...33

HJH HJK

HJM HJN

HJE HJF

HJH HJK

HJM HJN

HJF

HJH HJK

HJM HJN

HJE HJF

HJH HJK

HJM HJN

HJE HJF

HJH HJK

HJM HJN

—

.113...33 .113...33

—

.102...38

—

.089...43 .089...43

—

.082...45 .082...45

—

.082...45

—

.14 .14 .14 .14 .14 .14 .14 .14

|| 50,000/ 72,000 || 82,000/115,000

—

*** —/ 72,000 ***—/115,000

—

††† —/ 60,000

††† —/ 90,000

—

82 81

—

82 81

—

15-45 55-85

—

15-45 55-85

—

20-50

30-60

—

3.5 3.5 3.5 3.5

1.0 1.0 1.0 1.0

HJD

.113...33

HJE

.113...33

HJF

.129...30

HJG

.113...33

HJH

.113...33

HJK

.129...30

HJL

.102...38

HJM

.102...38

HJN

.116...32

HJD

.089...43

HJE

.089...43

HJF

.102...38

HJG

.089...43

HJH

.089...43

HJK

.102...38

HJL

.082...45

HJM

.082...45

HJN

.094...42

HJD

|| 50,000/ 72,000

HJE

|| 82,000/115,000

HJF

|| 120,000/150,000

HJG

*** —/ 72,000

HJH

*** —/115,000

HJK

*** —/150,000

HJL

††† —/ 60,000

HJM

††† —/ 90,000

HJN

††† —/120,000

HJD

HJE

HJF

HJG

HJH

HJK

HJL

HJM

HJN

HJD

15-45

HJE

35-65

HJF

50-80

HJG

15-45

HJH

35-65

HJK

50-80

HJL

20-50

HJM

30-60

HJN

40-70

†Indicates automatic reset.

**48HJD005-007 and 48HJE004 (72,000 Btuh heat input) units have 2 burners.

48HJE005-007 and 48HJF004 (115,000 Btuh heat input) units and 48HJF005007 (150,000 Btuh Heat input) units have 3 burners.

††An LP kit is available as an accessory.

||Three-phase standard models have heating inputs as shown. Single-phase

standard models have one-stage heating with heating input values as follows:

48HJE004, 48HJD005,006 — 72,000 Btuh 48HJF004, 48HJE005,006 — 115,000 Btuh 48HJF005,006 — 150,000 Btuh

***California compliant three-phase models.

†††California SCAQMD compliant low NO

are controlled to 40 nanograms per joule or less.

HJD HJE HJF

HJG HJH HJK

HJL HJM HJN

HJD HJE HJF

HJG HJH HJK

HJL HJM HJN

HJD HJE HJF

HJG HJH HJK

HJL HJM HJN

HJD HJE HJF

HJG HJH HJK

HJL HJM HJN

HJD HJE HJF

HJG HJH HJK

HJL HJM HJN

450 ± 50

428 320

7 ± 3

22 ± 5

30 ± 5 45 ± 5

Cleanable

1...20 x 24 x 1 Throwaway

2...16 x 25 x 2

.113...33 .113...33

.129...30

.113...33 — .113...33 — .129...30 —

.102...38 —

.116...32 —

.089...43 .089...43 .102...38

.089...43 —

.102...38 — .082...45 —

.082...45 —

.094...42 —

|| 50,000/ 72,000 || 82,000/115,000 || 120,000/150,000

*** —/ 72,000 —

*** —/115,000 —

*** —/150,000 — ††† —/ 60,000 —

†††—/ 90,000 —

††† —/120,000 —

82 81 80

82 —

81 —

80 — 81 —

81 —

82 —

15-45 35-65 50-80

15-45 —

35-65 —

50-80 — 20-50 —

30-60 —

40-70 —

models have combustion products that

HJD

.113...33

HJE

.113...33

HJF

.129...30

HJD

.089...43

HJE

.089...43

HJF

.102...38

HJD

|| 50,000/ 72,000

HJE

|| 82,000/115,000

HJF

|| 120,000/150,000

HJD

HJE

HJF

HJD

15-45

HJE

35-65

HJF

50-80

STANDARD

UNIT 48HJ

004 005 006 007

A B C D E

UNIT

WEIGHT

Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg

530 240 34 15.4 47 21.3 127 57.6 122 55.3 138 62.6 143 64.9 540 245 34 15.4 47 21.3 129 58.5 124 56.2 141 64.0 146 66.2 560 254 34 15.4 47 21.3 134 60.8 129 58.5 146 66.2 151 68.5 615 279 34 15.4 47 21.3 147 66.7 142 64.4 160 72.6 166 75.3

CONNECTION SIZES

13/

Dia [35] Field Power Supply Hole

″″″″

Dia [51] Power Supply Knockout

″″″″

13/

Dia [44] Charging Por t Hole

″″″″

Dia [22] Field Control Wiring Hole

″″″″

-14 NPT Condensate Drain

″″″″

-14 NPT Gas Connection

″″″″

21/

Dia [64] Power Supply Knockout

″″″″

DURABLADE

ECONOMIZER

WEIGHT

ECONOMI$ER

WEIGHT

CORNER

WEIGHT

(A)

CORNER

WEIGHT

CORNER

WEIGHT

(B)

NOTES:

1. Dimensions in [ ] are in millimeters.

(C)

CORNER WEIGHT

(D)

BOTTOM POWER CHART, THESE HOLES REQUIRED FOR

USE WITH ACCESSORY PACKAGES — CRBTMPWR001A00

THREADED

CONDUIT SIZE

*Select either 3/

†Select either 1/

THROUGH CRBTMPWR004A00

WIRE

″″″″

11/

″″″″

NPT

″″″″

NPT

USE

24 V Pow er* 11/ Pow er* 13/

Gas† 11/ Gas† 15/

or 11/

for power, depending on wire size.

″

or 3/

for gas depending on gas connection.

″

REQURED

HOLE SIZES (MAX.)

[22.2]

″″″″

[28.4]

″″″″

″

″ ″

[31.8]

″″″″

[41.3]

″″″″

2. Center of gravity.

3. Direction of airflow.

4. On vertical discharge units, ductwork to be attached to accessory roof curb only. For horizontal discharge units, field-supplied flanges should be attached to horizontal discharge openings, and all ductwork should be attached to the flanges.

5. Minimum clearance (local codes or jurisdiction may prevail): a. Between unit, flue side and combustible surfaces, 48 inches. (18 in. when using accessory flue

discharge deflector.)

b. Bottom of unit to combustible surfaces (when not using curb), 1 inch.

Bottom of base rail to combustible surfaces (when not using curb) 0 inches.

c. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The side getting the greater

clearance is optional. d. Overhead, 60 in. to assure proper condenser fan operation. e. Between units, control box side, 42 in. per NEC (National Electrical Code). f. Between unit and ungrounded surfaces, control box side, 36 in. per NEC. g. Between unit and block or concrete walls and other grounded surfaces, control box side, 42 in.

per NEC. h. Horizontal supply and return end, 0 inches.

6. With the exception of the clearance for the condenser coil and combustion side as stated in notes 5a, b and c, a removable fence or barricade requires no clearance.

7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering material if set on base rail.

8. The ver tical center of gravity is 1′-6″ [457] up from the bottom of the base rail.

[44.4]

Fig. 5 — Base Unit Dimensions — 48HJ004-007

Fig. 6 — Flue Hood Details

LEGEND

NFGC —

*Field supplied. NOTE: Follow all local codes.

National Fuel Gas Code

SPACING OF SUPPORTS

STEEL PIPE

NOMINAL DIAMETER

(in.)

or 1

or larger

SPACING OF SUPPORTS

X DIMENSION

(ft)

6 8

Fig. 7 — Gas Piping Guide (With Accessory

Thru-the-Curb Service Connections)

Install conduit through side panel openings indicated in Fig. 5. Route power lines through connector to terminal connections as shown in Fig. 8.

Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (also see Tables 2A-2D). On 3-phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in Tables 2A-2D, Note 2 to determine the percent voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable Carrier warranty.

NOTE: If accessory thru-the-bottom connections and roof curb are used, refer to the Thru-the-Bottom Accessory Installation Instructions for information on power wiring and gas connection piping. The power wiring, control wiring and ga s piping can be routed through field-drilled holes in the basepan. The basepan is specially designed and dimpled for drilling the access connection holes.

FIELD CONTR OL WIRING — Install a Carrier-approved accessory thermostat assembly according to installation instructions included with the accessory. Locate thermostat assembly on a solid wall in the conditioned space to sense average temperature in accordance with thermostat installation instructions.

Route thermostat cable or equivalent single leads of colored wire from subbase terminals through connector on unit to lowvoltage connections (shown in Fig. 9).

Connect thermostat wires to matching screw terminals of low-voltage connection board. See Fig. 9.

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft , use no. 16 AWG insulated wire (35 C minimum). For over 75 ft, use no. 14 AWG insulated wire (35 C minimum). All wire larger than no. 18 AWG cannot be directl y connected to the thermostat and will require a junction box and splice at the thermostat.

Pass the control wires through the hole provided in the corner post; then feed wires through the raceway built into the corner post to the 24-v barrier located on the left side of the control box. See Fig. 10. The raceway provides the UL required clearance between high- and low-voltage wiring.

HEAT ANTICIPATOR SETTINGS — Set heat anticipator settings at .14 amp for first stage and .14 for second stage heating, when available.

Step 8 — Adjust Factory-Installed Options

MOISTUREMISER DEHUMIDIFICATION PACKAGE — MoistureMiser package operation can be controlled by field installation of a Carrier-approved humidistat (Fig. 11). To install the humidistat:

1. Route humidistat cable through hole provided in unit corner post.

2. Feed wires through the raceway built into t he corner post to the 24-v barrier located on the left side of the control box. See Fig. 10. The raceway provides the UL-required clearance between high- and low-voltage wiring.

3. Use a wire nut to connect humidistat cable into lowvoltage wiring as shown in Fig. 12.

APOLLO CONTROL — The optional Apollo control is used to actively monitor all modes of operation as well as indoor (evaporator) fan status, filter status, and indoor-air quality. The Apollo control is designed to work with Carrier TEMP and

systems.

VVT

The thermostat must be wired to the Apollo Control before starting the unit. Refer to the Apollo Control installation instructions for information on installing the thermostat.

DISCONNECT SWITCH — The optional disconnect switch is non-fused. The switch has the capability of being locked in place for safety purposes.

RACEWAY LOW VOLTAGE

CONNECTIONS

INTEGRATED GAS UNIT CONTROLLER (IGC)

HOLE IN END PANEL (HIDDEN)

LEGEND

C— COMPS — EQUIP — GND — IFC —

NEC — TB —

Contactor Compressors Equipment Ground Indoor (Evaporator) Fan Contactor National Electrical Code Terminal Block

LEGEND

AHA — CC — TC — TH —

NOTE: Connect Y2 when unit is equipped with an integrated economizer.

Adjustable Heat Anticipator Cooling Compensator Thermostat-Cooling Thermostat-Heating Field Wiring Factory Wiring

Fig. 8 — Power Wiring Connections

Fig. 10 — Field Control Wiring Raceway

Fig. 9 — Low-Voltage Connections With or

Without Economizer

Table 2A — 48HJ Electrical Data Standard Motor (Units Without Electrical Convenience Outlet)

UNIT 48HJ

004

(3 Tons)

005

(4 Tons)

006

(5 Tons)

007

(6 Tons)

NOMINAL

VOLTAGE (V-Ph-Hz)

208/230-1-60 187 254 16.0 88.0 0.7 4.9 .57 25.6/25.6 35/35 25/25 101/101 208/230-3-60 187 254 10.3 77.0 0.7 4.9 .57 18.5/18.5 25/25 18/18 90/ 90

460-3-60 414 508 5.1 39.0 0.4 2.2 .30 9.0 15 9 46

575-3-60 518 632 4.2 31.0 0.4 2.2 .30 7.3 15 7 36 208/230-1-60 187 254 23.7 129.0 0.7 4.9 .57 35.2/35.2 45/45 34/34 142/142 208/230-3-60 187 254 13.5 99.0 0.7 4.9 .57 22.5/22.5 30/30 22/22 112/112

460-3-60 414 508 7.4 49.5 0.4 2.2 .30 11.9 15 12 56

575-3-60 518 632 5.8 40.0 0.4 2.2 .30 9.3 15 9 45 208/230-1-60 187 254 28.8 169.0 1.5 8.8 .57 46.3/46.3 60/60 45/45 216/216 208/230-3-60 187 254 17.3 123.0 1.5 5.8 .57 28.9/28.9 35/35 28/28 168/168

460-3-60 414 508 9.0 62.0 0.8 2.6 .30 14.7 20 14 84

575-3-60 518 632 7.1 50.0 0.8 2.6 .30 11.6 15 11 67 208/230-3-60 187 254 20.5 156.0 1.4 5.8 .57 32.8/32.8 40/40 32/32 200/200

460-3-60 414 508 9.6 70.0 0.6 2.6 .30 15.2 20 15 92

575-3-60 518 632 7.7 56.0 0.6 2.6 .30 12.2 15 13 78

VOLTAGE

RANGE

Min Max RLA LRA FLA FLA FLA MCA MOCP† FLA LRA

COMPRESSOR OFM IFM

Table 2B — 48HJ Electrical Data Standard Motor (Units With Electrical Convenience Outlet)

UNIT 48HJ

004

(3 Tons)

005

(4 Tons)

006

(5 Tons)

007

(6 Tons)

FLA — HACR— IFM — LRA — MCA — MOCP— NEC — OFM — RLA — UL —

*Used to determine minimum disconnect per NEC.

†Fuse or HACR circuit breaker.

NOTES:

1. In compliance with NEC requirements for multimotor and combi-

Full Load Amps Heating, Air Conditioning and Refrigeration Indoor (Evaporator) Fan Motor Locked Rotor Amps Minimum Circuit Amps Maximum Overcurrent Protection National Electrical Code Outdoor (Condenser) Fan Motor Rated Load Amps Underwriters’ Laboratories

nation load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.

Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%.

the percent of voltage imbalance.

= 100 x

max voltage deviation from average voltage

NOMINAL

VOLTAGE (V-Ph-Hz)

208/230-1-60 187 254 16.0 88.0 0.7 4.9 .57 31.6/31.6 40/40 30/30 106/106 208/230-3-60 187 254 10.3 77.0 0.7 4.9 .57 24.5/24.5 30/30 24/24 95/95

460-3-60 414 508 5.1 39.0 0.4 2.2 .30 11.7 15 11 48

575-3-60 518 632 4.2 31.0 0.4 2.2 .30 9.5 15 9 38 208/230-1-60 187 254 23.7 129.0 0.7 4.9 .57 41.2/41.2 50/50 39/39 147/147 208/230-3-60 187 254 13.5 99.0 0.7 4.9 .57 28.5/28.5 35/35 27/27 117/117

460-3-60 414 508 7.4 49.5 0.4 2.2 .30 14.6 20 14 58

575-3-60 518 632 5.8 40.0 0.4 2.2 .30 11.5 15 11 47 208/230-1-60 187 254 28.8 169.0 1.5 8.8 .57 52.3/52.3 60/60 50/50 221/221 208/230-3-60 187 254 17.3 123.0 1.5 5.8 .57 34.9/34.9 40/40 34/34 173/173

460-3-60 414 508 9.0 62.0 0.8 2.6 .30 17.4 20 17 86

575-3-60 518 632 7.1 50.0 0.8 2.6 .30 13.8 20 13 69 208/230-3-60 187 254 20.5 156.0 1.4 5.8 .57 38.8/38.8 45/45 37/37 205/205

460-3-60 414 508 9.6 70.0 0.6 2.6 .30 17.9 20 17 94

575-3-60 518 632 7.7 56.0 0.6 2.6 .30 14.3 20 15 79

LEGEND

Use the following formula to determine

average voltage

VOLTAGE

RANGE

Min Max RLA LRA FLA FLA FLA MCA MOCP† FLA LRA

COMPRESSOR OFM IFM

COMBUSTION

FAN MOTOR

COMBUSTION

FAN MOTOR

Example: Supply voltage is 460-3-60.

AB = 452 v BC = 464 v AC = 455 v

Average Voltage =

Determine maximum deviation from average voltage.

(AB) 457 – 452 = 5 v (BC) 464 – 457 = 7 v

(AC) 457 – 455 = 2 v Maximum deviation is 7 v. Determine percent of voltage imbalance.

% Voltage Imbalance= 100 x

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

= 1.53%

POWER

SUPPLY

WITH OUTLET

POWER

SUPPLY

WITH OUTLET

452 + 464 + 455

1371

= 457

7 457

MINIMUM UNIT

DISCONNECT

SIZE*

MINIMUM UNIT

DISCONNECT

SIZE*

Table 2C — 48HJ High-Static Motor Units Without Electrical Convenience Outlet

UNIT 48HJ

004

005

006

007

NOMINAL

VOLTAGE (V-Ph-Hz)

208/230-3-60 187 254 10.3 77.0 0.7 5.8 0.6 19.4/19.4 25/25 19/19 120/120

460-3-60 414 508 5.1 39.0 0.4 2.6 0.3 9.4 15 9 60 575-3-60 518 632 4.2 31.0 0.4 2.6 0.3 7.7 15 8 48

208/230-3-60 187 254 13.5 99.0 0.7 5.8 0.6 23.4/23.4 30/30 23/23 142/142

460-3-60 414 508 7.4 49.5 0.4 2.6 0.3 12.3 15 12 71 575-3-60 518 632 5.8 40.0 0.4 2.6 0.3 9.7 15 9 57

208/230-3-60 187 254 17.3 123.0 1.5 7.5 0.6 30.6/30.6 35/35 30/30 187/187

460-3-60 414 508 9.0 62.0 0.8 3.4 0.3 15.5 20 15 94 575-3-60 518 632 7.1 50.0 0.8 3.4 0.3 12.2 15 12 76

208/230-3-60 187 254 20.5 156.0 1.4 7.5 0.6 30.6/30.6 35/35 30/30 187/187

460-3-60 414 508 9.6 70.0 0.6 3.4 0.3 15.5 20 15 94 575-3-60 518 632 7.7 56.0 0.6 3.4 0.3 12.2 15 12 76

VO LTAG E

RANGE

Min Max RLA LRA FLA FLA RLA MCA MOCP† FLA LRA

COMPRESSOR

(each)

Table 2D — 48HJ High-Static Motor Units With Electrical Convenience Outlet

UNIT

48HJ

004

005

006

007

FLA — HACR— IFM — LRA — MCA — MOCP— NEC — OFM — RLA — UL —

*Used to determine minimum disconnect per NEC.

†Fuse or HACR circuit breaker.

NOTES:

1. In compliance with NEC requirements for multimotor and combi-

nation load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.

Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%.

the percent of voltage imbalance.

= 100 x

max voltage deviation from average voltage

NOMINAL VOLTAGE (V-Ph-Hz)

208/230-3-60 187 254 10.3 77.0 0.7 5.8 0.6 25.4/25.4 30/30 25 124/124

460-3-60 414 508 5.1 39.0 0.4 2.6 0.3 12.1 15 12 63 575-3-60 518 632 4.2 31.0 0.4 2.6 0.3 9.8 15 10 50

208/230-3-60 187 254 13.5 99.0 0.7 5.8 0.6 29.4/29.4 35/35 29 146/146

460-3-60 414 508 7.4 49.5 0.4 2.6 0.3 15.0 20 14 73 575-3-60 518 632 5.8 40.0 0.4 2.6 0.3 11.8 15 11 59

208/230-3-60 187 254 17.3 123.0 1.5 7.5 0.6 36.6/36.6 40/40 36 192/192

460-3-60 414 508 9.0 62.0 0.8 3.4 0.3 18.2 20 18 96 575-3-60 518 632 7.1 50.0 0.8 3.4 0.3 14.4 20 14 77

208/230-3-60 187 254 20.5 156.0 1.4 7.5 0.6 40.5/40.5 45/45 39 224/224

460-3-60 414 508 9.6 70.0 0.6 3.4 0.3 18.7 25 18 104 575-3-60 518 632 7.7 56.0 0.6 3.4 0.3 15.0 20 15 89

LEGEND

Use the following formula to determine

average voltage

VOLTAGE

RANGE

Min Max RLA LRA FLA FLA RLA MCA MOCP† FLA LRA

COMPRESSOR

(each)

OFM IFM

MINIMUM UNIT

DISCONNECT

SIZE*

MINIMUM UNIT

DISCONNECT

SIZE*

COMBUSTION

FAN MOTOR

COMBUSTION

FAN MOTOR

Example: Supply voltage is 460-3-60.

AB = 452 v BC = 464 v AC = 455 v

Average Voltage =

Determine maximum deviation from average voltage.

(AB) 457 – 452 = 5 v (BC) 464 – 457 = 7 v

(AC) 457 – 455 = 2 v Maximum deviation is 7 v. Determine percent of voltage imbalance.

% Voltage Imbalance= 100 x

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

= 1.53%

POWER SUPPLY

POWER

SUPPLY

7 457

452 + 464 + 455

1371

= 457

OPTIONAL DURABLADE ECONOMIZER — The option-

Fig. 11 — Accessory Field-Installed Humidistat

al economizer hood assembly is packaged and shipped in the filter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical discharge position.

NOTE: Horizontal discharge block-off plate is shipped with the air hood package. If unit is to be used for vertical discharge application, discard this plate.

Assembly:

1. Determine if ventilation air i s required in building. If so, determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 7.

2. Remove filter access panel by raising panel and swinging panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove filter access panel. Remove outdoor-air opening panel. Save panels and screws. See Fig. 13. Remove economizer, and remove optional outdoor-air damper hood package from filter section (located behind economizer).

3. Assemble outdoor-air hood top and side plates as shown in Fig. 14. Install seal strips on hood top and sides. Put aside screen retainer and retainer screw for later assem-

Do not attach hood to unit at this time.

bly .

4. Slide economizer i nto unit and secure with screws. See Fig. 15.

NOTE: Be sure to engage rear economizer flange under tabs in vertical return-air opening.

5. To convert to horizontal discharge application: a. Rotate economizer 90 degrees until the econo-

mizer motor faces the condenser section (see Fig. 16).

b. Remove tape and shipping screw, rotate the baro-

metric relief damper cover 90 degrees.

c. Install horizontal discharge block-off plate over

the opening on the access panel. (Block-off plate MUST be installed before installing hood assembly.) See Fig. 17.

6. Remove 12-pin blue and yellow wir e jumper plug from factory wiring harness and store. Insert economizer plug into 12-pin plug of factory wiring harness. Remove tape and shipping screw from barometric relief damper. See Fig.18.

7. If ventilation air is not required, proceed to Step 8. If ventilation air is required, determine minimum position setting for required airflow. See Fig. 19. Adjust minimum position setting by adjusting the screws on the position setting bracket. Slide bracket until the top screw is in the position determined by Fig. 19. Tighten screws.

8. Remove tape from outdoor-air thermostat (OAT). Fasten OAT to inside of hood using screws and spee d clips provided. See Fig. 20. Make sure OAT terminals are positioned up.

MOISTUREMISER

% RELATIVE HUMIDITY

LEGEND

C — CCH — COMP — FU — HU — IFM — LLSV — S-LPS — TRAN —

Contactor (Compressor) Crankcase Heater Compressor Fuse Humidistat Indoor (Evaporator) Fan Motor Liquid Line Solenoid Valve Low-Pressure Switch (Subcooler Only) Transformer Fac tory W irin g Accessory or Optional Wiring

Fig. 12 — Typical MoistureMiser Dehumidification Package Humidistat Wiring

(208/230-V Unit Shown)

9. Replace outdoor-air opening panel using screws from

ECONOMIZER CONTROL BOARD

ECONOMIZER PLUG

ECONOMIZER MOTOR

TOP SCREW

SHIPPING SCREW

ECONOMIZER CONTROL BOARD

BAROMETRIC RELIEF DAMPER

ECONOMIZER PLUG

ECONOMIZER MOTOR

BLOCK-OFF PLATE

Fig. 15 — Durablade Economizer Installed in Unit

Fig. 16 — Horizontal Durablade Economizer

Installation

Fig. 17 — Horizontal Discharge Block-Off Plate

Step 2. Replace filter a ccess panel. Ensure the filter ac cess panel slides along the tracks and is securely engaged.

10. Fasten hood top and side plate assembly (Fig. 14) to outdoor-air opening panel with screws provided.

11. Place knob supplied with economizer on OAT. See Fig. 20. Set for 3° F below indoor room thermostat setting. If accessory enthalpy control (EC) is used in place of OAT, see instructions shipped with EC for installation and adjustment. See Fig. 20.

12. Connect OAT per Fig. 21.

13. Slide outdoor-air inlet screen into screen track on hood side plate. While holding screen in place, fasten screen retainer to hood using screws provided.

NOTE: Refer to Fig. 22 for economizer barometric relief damper characteristics.

FILTER ACCESS PANEL

OUTDOOR-AIR OPENING

Fig. 13 — Typical Access Panel Locations

COMPRESSOR ACCESS PANEL

Fig. 14 — Outdoor-Air Hood Details

U-SHAPED HOLE (NOT SHOWN)

ECONOMIZER PLUG

WIRING HARNESS

Fig. 18 — Typical Durablade Economizer and

Wiring Harness

Example:

Given —

Negative Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . .0.1 in. wg

Outdoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1100 cfm

Determine —

Setting = 6

Fig. 19A — Durablade Economizer Damper

Minimum Position Setting

TOP

ENTHALPY CONTROL

HOOD

OUTSIDE AIR SCREEN

OPEN

OUTDOOR TEMP

8 0

OAT (TERMINALS ARE UP)

POSITION

MINIMUM

CONT

OR UNPOWERED ST

ACT RA

CTS SHO

4 V

–SETPOINTS

TINGS: 1.5A

DAMPER

24V

WN IN HIGH ENTHALPY

OPEN

3 m

TR1

RUN, 3.5A IN

–CCW

IN. A

DAMPER

CLOSED

T 1

1 VDC

7-36

UNIT

V . B

ENTHALPY CONTROL

Fig. 19B — Durablade Economizer Minimum

Position Damper Setting

Fig. 20 — Outdoor-Air Thermostat/

Enthalpy Control Installation

Fig. 21 — Wiring Connections for

Outdoor-Air Thermostat

0.90

BAROMETRIC RELIEF DAMPERS

CONTROLLER

ECONOMI$ER PLUG

GEAR-DRIVEN DAMPER

OUTDOOR AIR TEMPERATURE SENSOR

ACTUATOR

OUTDOOR-AIR OPENING PANEL

FILTER ACCESS PANEL

OUTDOOR AIR OPENING PANEL

SEAL STRIP

EXHAUST AIR SCREEN

EXHAUST AIR HOOD TOP

SCREEN RETAINER

EXHAUST AIR HOOD SIDES

EXHAUST AIR BOTTOM BRACKET

Fig. 23 — Economizer Component Locations

Fig. 24 — Typical Access Panel Locations

Fig. 25 — Exhaust Air Hood Assembly

0.80

0.70

0.60

0.50

0.40

0.30

PRESSURE DROP (in. wg)

0.20

0.10

the EconoMi$er plug into the unit wiring harness. Refer to wiring diagram Fig. 30 and 31. Also refer to Fig. 32 if installing an accessory power exhaust.

9. Install the complete hood assembly on the unit and secure using the screws provided.

10. Remove the indoor fan motor access panel. See Fig. 33.

11. Mount the supply-air temperature sensor to the lower left portion of the indoor blower housing with the two (2) screws provided (see Fig. 34). Connect the violet and pink wires to the corresponding connections on the supply-air temperature sensor. Replace the indoor fan motor access panel.

0.00

200 300 400

100

CFM

Fig. 22 — Durablade Economizer Barometric

Relief Damper Characteristics

OPTIONAL ECONOMI$ER — See Fig. 23 for EconoMi$er component locations.

1. To remove the existing unit filter access panel, raise the panel and swing the bottom outward. The panel is now disengaged from the track and can be removed. Remove the indoor coil access panel and discard. See Fig. 24.

If installing an optional Power Exhaust Assembly, refer to

EconoMi$er Power Exhaust Installation Instructions.

the Controller should be mounted in vertical position as

shown in Fig. 23.

2. Assemble the hood assembly as follows: Remove the EconoMi$er hood from its packaging. Re-

move shipping brackets holding hood package to EconoMi$er. Locate the outdoor-air opening panel. See Fig. 25. Remove hood assembly shipping brackets located on the back (sloped) side of the EconoMi$er assembly. These brackets are used to retain the hood assembly during shipping only .

3. Install the

/8 x 3/4-in. seal strip on the exhaust air hood side panels and the bottom bracket. Assemble the exhaust air hood to the outdoor-air opening panel as shown in Fig. 25, using the screws provided.

assembly to unit at this time.

4. Ins tall the

/8 x 3/4 in. seal strip on the outdoor-air hood top and side panels. Assemble the outdoor-air hood to the outdoor-air opening panel as shown in Fig. 26, using the screws provided.

Do not attach hood assembly to the unit

at this time.

5. Slide the outdoor-air inlet screens into the screen track on the hood side panels. While holding the screens in pl ace, fasten the screen retainer to the hood using the screws provided. Repeat the process for the barometric exhaust air screen.

sembly to unit a t this ti me.

6. Install the EconoMi$er assembly into the rooftop unit. See Fig. 28 and 29.

NOTE: Be sure to engage rear EconoMi$er flange under tabs in return-air opening of the unit base. See Fig. 28.

7. Install the outdoor-air block-off plate, then secure the EconoMi$er with the screws provided. See Fig. 29.

Do not attach completed (Fig. 27) hood as-

8. Remove and discard the 12-pin jumper plug from the unit wiring harness located int he upper left corner and insert

500 600

Do not attach hood

700

800

+ 33 hidden pages