Carrier 48TFD008-014, 48TFE008-014, 48TFF008-012 User Manual

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Page 1

Single-Package Rooftop Heating/Cooling Units

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS INSTALLATION

Step 1 — Provide Unit Support

•ROOF CURB

• SLAB MOUNT

Step 2 — Field Fabricate Ductwork Step 3 — Install External Trap for

Condensate Drain

Step 4 — Rig and Place Unit

• POSITIONING

Step 5 — Install Flue Hood Step 6 — Install Gas Piping Step 7 — Make Electrical Connection

• FIELD POWER SUPPLY

• FIELD CONTROL WIRING

• HEA T ANTICIPATOR SETTINGS

Step 8 — Adjust Factory-Installed Options

• APOLLO CONTROL

• MANUAL OUTDOOR-AIR DAMPER

• OPTIONAL DURABLADE ECONOMIZER

• OPTIONAL ECONOMI$ER

Step 9 — Adjust Evaporator-Fan Speed START-UP SERVICE TROUBLESHOOTING START-UP CHECKLIST

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-41

. . . . . . . . . . . . . . . . . . . . . . . . . 42-46

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 functions 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.

. . . . . . . . . . . . . . . . . . . . . . 1

1-33

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. . . . . . . . . . . . . . . . . . . . . . . .CL-1

48TFD008-014

48TFE008-014

48TFF008,012

50 Hz

Disconnect gas piping from unit when leak testing at pressure greater than 3.4 kPa (1/2 psig).

Before performing service or maintenance operations on unit, turn off main power swit ch to unit. Electrical shock could cause personal injury.

Unit is shipped in the vertical discharge configuration. To convert to horizontal configuration, remove screws from side duct opening covers and remove covers. Using the same screws, install covers on vertical duct openings with the insulation side down. Seals around duct openings must be tight. See Fig. 1.

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. 2. Install insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb. If gas, electric power or control power is to be routed through the curb, attach the accessory thru-the-curb service connection plates to the roof curb in accordance with the accessory installation instructions. Connection plates must be installed before unit is set in roof curb.

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. 2. Improperly

applied gasket can also result in air leaks and poor unit

performance.

Curb should be level. Unit leveling tolerances a re shown in Fig. 3. This is necessary for unit drain to function properly. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

Pressures greater than 3.4 kPa (1/2 psig) will cause gas valve damage resulting in hazardous condition. If gas valve is ever subjected to pressure greater than 3.4 kPa ( replaced before use. When pressure testing field-supplied gas piping at pressures of 3.4 kPa

(

/2 psig) or less, a unit connected to such piping must be isolated by manually closing the gas valve(s).

psig), it must be

INSTALLATION

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

Catalog No. 004-816 Printed in U.S.A. Form 48TF-C1SI Pg 1 1-01 Replaces: New

Page 2

SLAB MOUNT (Horizontal Units Only) — Provide a level concrete slab that extends a minimum of 152 mm (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.

Step 2 — Field Fabricate Ductwork —

ducts to roof curb and building structure on vertical units. Do not connect ductwork to unit. For horizontal applications, field-

supplied flanges should be attached to horizontal discharge openings and all ductwork 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 –87 Pa (–.35 in. wg) with Durablade economizer, –26 Pa (–.30 in. wg) with EconoMi$er or –112 Pa (–.45 in. wg) without economizer.

These units are designed for a minimum heati ng operation continuous return-air temperature of 10 C (50 F) (dry bulb), or an intermittent operation down to 7 C (45 F) (dry bulb), such as when used with a night set-back thermostat.

Secure all

Step 3 — Install External Trap for Condensate Drain —

nections are located at 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, make sure the plug (Red) in the alternate bottom connection is tight before installing the unit.

The unit’s 19-mm (3/4-in.) condensate drain con-

To use the bottom drai n connection for a roof curb installation, relocate the factory-installed plug (Red) from the bottom connection to the side connection. See Fig. 4. 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 at least 102-mm (4-in.) deep and protect against freeze-up. If drain line is installed downstream from the external trap, pitch the line away from the unit at 25 mm (1 in.) per 3 m (10 ft) of run. Do not use a pipe size smaller than the 19-mm (

Step 4 — Rig and Place Unit —

transportation damage. File any claim with transportation agency. Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Tables 1A and 1B and Fig. 5 for additional information. Operating weight is shown in Tables 1A and 1B and Fig. 5.

and 6. Refer to rigging instructions on unit.

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. 6.

air inlets near exhaust vents or other sources of contami nated air.

combustion intake or flue outlet.

A, B, or C roof-covering material when roof curb is used.

/4-in.) unit connection.

Inspect unit for

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

All panels must be in place when rigging.

Do not install unit in an indoor location. Do not locate unit

Be sure that unit is installed so that snow will not block the

Unit may be installed directly on wood flooring or on Class

(Copy continued on page 4.)

Fig. 1 — Horizontal Conversion Panels

Page 3

CONNECTOR

PKG. ACCY.

CRBTMPWR001A00 CRBTMPWR002A00 1

CRBTMPWR003A00

2′-8

[827]

″

1′-10

[583]

CRBTMPWR004A00

D ALT

DRAIN

HOLE

″

[44.5]

GAS POWER CONTROL

/4″

[19] NPT

″

[12.7] NPT

″

[19] NPT

″ [19] NPT

″ [31.7]

/4″ [19] NPT

11/4″ [31.7]

/2″

[12.7]

ROOF CURB

ACCESSORY

“A”

CRRFCURB003A00 1′-2″ [356] CRRFCURB004A00 2′-0″ [610]

″

NOTES:

1. Roof curb accessory is shipped disassembled.

2. Insulated panels: 1-in. [25] thick polyurethane

3. Dimensions in [ ] are in millimeters.

4. Roof curb: 16-gage steel.

5. Attach ductwork to curb (flanges of duct rest on

6. Service clearance 4 ft [1219] on each side.

foam, 1

curb).

/4 lb density.

UNIT SIZE

48TF

008-014

7. Direction of airflow.

8. Connector packages CRBTMPWR001A00 and 2A00 are for thru-the-curb gas type. Packages CRBTMPWR003A00 and 4A00 are for thruthe-bottom type gas connections.

Fig. 2 — Roof Curb Details

Page 4

Although unit is weatherproof, guard against water from

DRAIN PLUG

MAXIMUM ALLOWABLE

DIFFERENCE mm (in.)

A-B B-C A-C

13 (0.5) 25 (1.0) 25 (1.0)

Fig. 3 — Unit Leveling Tolerances

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

Fig. 4 — Condensate Drain Pan

higher level runoff and overhangs.

Position unit on roof curb so that the following clearances are maintaine d: 7 mm ( base rails on each side and duct end of unit; 84 mm (3

/4-in.) clearance between roof curb and

/16-in.) clearance between roof curb and condenser c oil end of unit. (See Fig. 2, section C-C.)

Locate mechanical draft system flue assembly at least 1219 mm (48 in.) from any opening through which combustion products could enter the building, and at least 1219 mm (48 in.) from an adjacent building or combustible material. When unit is located adjacent to public walkways, flue assembly must be at least 2.13 m (7 ft) above grade.

Flue vent discharge must have a minimum horizontal clearance of 1219 mm (48 in.) from electric and gas meters, gas regulators, and gas relief equipment.

Flue gas can deteriorate building materials. Orient unit so 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), latest revision, U.S.A. Standards.

(Copy continued on page 8.)

NOTES:

1. Dimension in ( ) is in millimeters.

2. 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.

3. Weights include base unit without economizer. See Tables 1A and 1B for economizer weights.

All panels must be in place when rigging.

UNIT 48TF

D/E/F008 D/E/F012

D/E014

Fig. 5 — Rigging Details

MAX

WEIGHT

lb kg in. mm in. mm in. mm

870 395 87.38 2219 40.25 1022 41.31 1050 1035 469 87.38 2219 40.25 1022 49.31 1253 1050 476 87.38 2219 40.25 1022 49.31 1253

DIMENSIONS

‘‘A’’ ‘‘B’’ ‘‘C’’

Page 5

Table 1A — Physical Data (SI)

UNIT SIZE 48TF 008 012 014 Low Heat (D), Medium Heat (E), High Heat (F) D E F D E F D E NOMINAL CAPACITY (kW) 21.5 29.2 35.9 OPERATING WEIGHT (kg)

Unit 395 469 476 Durablade Economizer 20 20 20 EconoMi$er 28 28 28 Roof Curb* 65 65 65

COMPRESSOR TYPE Hermetic Hermetic Scroll

Quantity 222 Oil (ml) 1479 ea 1479 ea 1597 ea

REFRIGERANT TYPE R-22

Operating Charge (kg)

Circuit 1 2.10 3.08 3.49 Circuit 2 2.22 3.22 3.49

CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins

Rows...Fins/m 1...669 2...669 2...669 Total Face Area (sq m) 1.90 1.92 2.30

CONDENSER FAN Propeller Type

Nominal L/s 2880 3050 3050 Quantity...Diameter (mm) 2...559 2...559 2...559 Motor BkW...r/s .19...15.5 .19...15.5 .19...15.5

EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Feed Device

Rows...Fins/m 3...590 3...590 4...590 Total Face Area (sq m) 0.74 0.93 1.03

EVAPORATOR FAN Centrifugal Type

Quantity...Size (mm x mm) 1...381 x 381 1...381 x 381 1...381 x 381 Type Drive Belt Belt Belt Nominal L/s 1230 1700 1980 Motor kW 1.12 1.50 2.24 Maximum Continuous BkW 1.79 1.79 2.76 Motor Frame Size 56 56 56 Fan r/s Range 8.2-11.7 9.5-13.0 12.0-15.0 Motor Bearing Type Ball Ball Ball Maximum Allowable r/s 26.7 26.7 26.7 Motor Pulley Pitch Diameter Min/Max (mm) 61/86 71/97 102/127 Nominal Motor Shaft Diameter (mm) 16 16 22 Fan Pulley Pitch Diameter (mm) 178 178 203 Nominal Fan Shaft Diameter (mm) 25 25 25 Belt, Quantity...Type...Length (mm) 1...A...1245 1...A...1245 1...A...1346 Pulley Center Line Distance (mm) 425-489 403-445 403-445 Speed Change per Full Turn of

Movable Pulley Flange (r/s)

Movable Pulley Maximum Full Turns

From Closed Position Factory Settin g 555 Factory Speed Setting (r/s) 8.2 9.5 12.0 Fan Shaft Diameter at Pulley (mm) 25 25 25

FURNACE SECTION

Rollout Switch Cutout Temp (C) 90.6 90.6 90.6 Burner Orifice Diameter (mm)

Natural Gas — Std 3.05 3.05 3.05 3.28 3.05 3.28

Liquid Propane — Alt 2.44 2.44 2.44 2.59 2.44 2.59 Thermostat Heat Anticipator Setting (amps) 400 v Stage 1 .14 .14 .14 .14 .14

Stage 2 .14 .20 .20 .20 .20

Gas Input (kW) Stage 1 21.1 31.9 39.8 31.9 39.8 43.9 39.8 43.9

Efficiency (Steady State) (%) 80 80 80 Temperature Rise Range (C) –6-10 2-18 7-24 2-18 7-24 4-21 7-24 4-21 Manifold Pressure (kPa)

Natural Gas — Std 8.3 8.3 8.3 Liquid Propane — Alt 8.3 8.3 8.3

Field Gas Connection Size (mm) 13 19 19 19 19 19 19 19

HIGH-PRESSURE SWITCH (kPa)

Standard Compressor

Internal Relief (Differential) Cutout 2951 Reset (Auto.) 2206

LOW-PRESSURE SWITCH (kPa)

Cutout 48 ± 21 Reset (Auto.) 152 ± 48

FREEZE PROTECTION THERMOSTAT

Opens (C) –1 ± 3 Closes (C) 7 ± 3

OUTDOOR-AIR INLET SCREENS Cleanable

Quantity...Size (mm)

RETURN-AIR FILTERS Throwaway

Quantity...Size (mm) 4...406 x 508 x 51 4...508 x 508 x 51 4...508 x 508 x 51

Bhp — Brake Horsepower BkW — Fan Input Watts x Motor Efficiency

LEGEND *Weight of 356 mm (14-in.) roof curb.

Stage 2 31.4 50.4 59.8 50.4 59.8 65.6 59.8 65.6

.70 .70 .60

555

3103 ± 345 3448 ± 345

1...508 x 635 x 25

1...406 x 635 x 25

NOTE: The 48TF units have a loss-of-charge (low pressure) switch located in the liquid line.

Page 6

Table 1B — Physical Data (English)

UNIT SIZE 48TF 008 012 014 Low Heat (D), Medium Heat (E), High Heat (F) D E F D E F D E NOMINAL CAPACITY (tons) 6.1 8.3 10.2 OPERATING WEIGHT (lb)

Unit 870 1035 1050 Durablade Economizer 44 44 44 EconoMi$er 62 62 62 Roof Curb* 143 143 143

COMPRESSOR TYPE Hermetic Hermetic Scroll

Quantity 222 Oil (oz) 50 ea 50 ea 54 ea

REFRIGERANT TYPE R-22

Operating Charge (lb-oz)

Circuit 1 4-10 6-13 7-11 Circuit 2 4-11 7- 2 7- 8

CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins

Rows...Fins/in. 1...17 2...17 2...17 Total Face Area (sq ft) 20.50 20.50 25.00

CONDENSER FAN Propeller Type

Nominal Cfm 6100 6500 6500 Quantity...Diameter (in.) 2...22 2...22 2...22 Motor BkW...Rpm

EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Feed Device

Rows...Fins/in. 3...15 3...15 4...15 Total Face Area (sq ft) 8.0 10.0 11.1

EVAPORATOR FAN Centrifugal Type

Quantity...Size (in.) 1...15 x 15 1...15 x 15 1...15 x 15 Type Drive Belt Belt Belt Nominal Cfm 2600 3500 4200 Motor Hp 1 Maximum Continuous Bhp 2.40 2.40 3.70 Motor Frame Size 56 56 56 Fan Rpm Range 492-700 571-779 717-900 Motor Bearing Type Ball Ball Ball Maximum Allowable Rpm 1600 1600 1600 Motor Pulley Pitch Diameter Min/Max (in.) 2.4/3.4 2.8/3.8 4.0/5.0 Nominal Motor Shaft Diameter (in.) Fan Pulley Pitch Diameter (in.) 7.0 7.0 8.0 Nominal Fan Shaft Diameter (in.) ——— Belt, Quantity...Type...Length (in.) 1...A...49 1...A...49 1...A...53 Pulley Center Line Distance (in.) 16.75-19.25 15.85-17.50 15.85-17.50 Speed Change per Full Turn of

Movable Pulley Flange (rpm)

Movable Pulley Maximum Full Turns

From Closed Position Factory Settin g 555 Factory Speed Setting (rpm) 492 571 717 Fan Shaft Diameter at Pulley (in.) 111

FURNACE SECTION

Rollout Switch Cutout Temp (F) 195 195 195

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

Natural Gas — Std .120...31 .120...31 .120...31 .129...30 .120...31 .129...30

Liquid Propane — Alt .096...41 .096...41 .096...41 .102...38 .096...41 .102...38 Thermostat Heat Anticipator Setting (amps) 400 v Stage 1 .14 .14 .14 .14 .14

Stage 2 .14 .20 .20 .20 .20

Gas Input (Btuh) Stage 1 72,000 109,000 136,000 109,000 136,000 150,000 136,000 150,000

‘ 107,000 172,000 204,000 172,000 204,000 224,000 204,000 224,000

Efficiency (Steady State) (%) 80 80 80 Temperature Rise Range (F) 20-50 35-65 45-75 35-65 45-75 40-70 45-75 40-70 Manifold Pressure (in. wg)

Natural Gas — Std 3.5 3.5 3.5 Liquid Propane — Alt 3.5 3.5 3.5

Field Gas Connection Size (in.)

HIGH-PRESSURE SWITCH (psig)

Standard Compressor

Internal Relief (Differential) Cutout 428 Reset (Auto.) 320

LOW-PRESSURE SWITCH (psig)

Cutout 7 ± 3 Reset (Auto.) 22 ± 7

FREEZE PROTECTION THERMOSTAT

Opens (F) 30 ± 5 Closes (F) 45 ± 5

OUTDOOR-AIR INLET SCREENS Cleanable

Quantity...Size (in.)

RETURN-AIR FILTERS Throwaway

Quantity...Size (in.) 4...16 x 20 x 2 4...20 x 20 x 2 4...20 x 20 x 2

LEGEND *Weight of 356 mm (14-in.) roof curb.

Bhp — Brake Horsepower BkW — Fan Input Watts x Motor Efficiency

/4...930

41 41 36

555

450 ± 50 500 ± 50

1...20 x 25 x 1

1...16 x 25 x 1

NOTE: The 48TF units have a loss-of-charge (low pressure) switch located in the liquid line.

Page 7

STANDARD

UNIT

UNIT WEIGHT

48TF

D/E/F008 D/E/F012 D/E014

NOTES:

1. Dimensions in [ ] are in millimeters.

Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg ft-in. [mm] ft-in. [mm] ft-in. [mm] ft-in. [mm]

870 395 44 20 62 28 189 86 161 73 239 109 280 127 1-27/8[378] 3-55/16[1050] 2-911/16[856] 2- 27/16[672] 1035 469 44 20 62 28 225 102 192 87 285 129 333 151 2-57/8[759] 4-15/16[1253] 3-03/8[924] 2-107/16[875] 1050 476 44 20 62 28 228 103 195 88 289 131 338 153 1-27/8[378] 4-15/16[1253] 3-03/8[924] 2-107/16[875]

DURABLADE

ECONOMIZER

WEIGHT

ECONOMI$ER

WEIGHT

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,

36 in. [914].

b. Bottom of unit to combustible surfaces (when not using

curb), 1 in. [25]. Bottom of base rail to combustible surfaces (when not using curb) 0 inches.

c. Condenser coil, for proper airflow, 36 in. [914] one side,

12 in. [304] the other. The side getting the greater clearance is optional.

d. Overhead, 60 in. [1624] to assure proper condenser fan

operation.

e. Between units, control box side, 42 in. [1067] per NEC

(National Electrical Code).

f. Between unit and ungrounded surfaces, control box

side, 36 in. [914] per NEC.

g. Between unit and block or concrete walls and other

grounded surfaces, control box side, 42 in. [1067] 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 vertical center of gravity is 1′-7″ [483] for 008, 1′-11 [584] for 012 and 014 up from the bottom of the base rail.

CORNER

WEIGHT (A)

″

CORNER

WEIGHT (B)

″″″″

Dia [22] Field Control Wiring Hole

″

[19] - 14 NPT Condensate Drain

″ ″

″″″″

[13] - 14 NPT Gas Connection 48TFD008

″

[19] - 14 NPT Gas Connection 48TFE,F008

″ ″

48TFD,E012 & 014, 48TJF012

″″″″

Dia [51] Power Supply Knockout

CORNER

WEIGHT (C)

WEIGHT (D)

CONNECTION SIZES

Dia [35] Field Power Supply Hole Dia [64] Power Supply Knockout Dia [44] Charging Port Hole

CORNER

“H” “J” “K” “L”

BOTTOM POWER CHART, THESE HOLES REQUIRED FOR USE WITH ACCESSORY

PACKAGES — CRBTMPWR002A00 (POWER

AND CONTROL) AND CRBTMPWR004A00

(POWER, CONTROL, AND GAS)

THREADED

CONDUIT

SIZE

″

[12.7]

″ ″

″

[31.7]

″ ″

″

[19] FPT

″ ″

WIRE

USE

24 V

Powe r 1

Gas 1

REQURED

HOLE SIZES

(MAX.)

″″″″

[22.2]

″″″″

[44.4]

″″″″

[41.3]

Fig. 6 — Base Unit Dimensions

Page 8

Step 5 — Install Flue Hood —

BASE UNIT

BASE RAIL

FROM GAS METER

ROOF CURB

DRIP LEG PER NFGC*

FIELD-FABRICATED SUPPORT*

1219 mm (48") MINIMUM

228 mm (9") MINIMUM CLEARANCE FOR PANELREMOVAL

MANUAL GAS SHUTOFF VALVE*

GAS REGULATOR*

Fig. 8 — Gas Piping Guide (With Accessory

Thru-the-Curb Service Connections)

SPACING OF SUPPORTS

STEEL PIPE NOMINAL DIAMETER

mm (in.)

DIMENSION

m (ft)

13 (

/2)

19 or 25 (

or 1)

32 or larger (11/4 or larger)

1.8 (6)

2.4 (8)

3.0 (10)

LEGEND

*Field supplied. NOTE: Follow all local codes.

NFGC —

National Fuel Gas Code (U.S.A. Standard)

Fig. 7 — Flue Hood Details

Flue hood is shipped screwed to the burner compartment access panel. Remove from shipping location and, using screws provided, install flue hood and screen in location shown in Fig. 7.

Step 6 — Install Gas Piping —

Unit is equipped for use with type of gas shown on nameplate. Refer to local building codes.

For natural gas applications, gas pressure at unit gas connection must not be less than 13.5 kPa (4.0 in. wg) (17.0 kPa [5.0 in. wg] in high heat units) or greater than 44.0 kPa (13.0 in. wg) while unit is operating. For liquid propane applications, the gas pressure must not be less than 17.0 kPa (5.0 in. wg) or greater than 44.0 kPa (13.0 in. wg) at the unit connection.

Size gas supply piping for 1.7 kPa (0.5 in. wg) maximum pressure drop. Do not use supply pipe smaller than unit gas connection.

NOTE: When installing gas piping to gas valve inlet, use properly sized back-up wrench on inlet flange flats.

Support gas piping as shown in the table in Fig. 8. For example, a 19 mm (

/4-in.) gas pipe must have one field-

fabricated support beam every 2.4 m (8 ft).

See Fig. 8 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 (U.S.A. Standards), and local electrical codes. Do not use gas piping as an electrical ground. Failure to follow this warning could result in the installer being liable for personal injury of others.

FIELD POWER SUPPLY — All units are factory wired for the voltage shown on the nameplate.

Refer to unit label diagram for additional informat ion. Pigtails are provided for field service.

When installing units, provide a disconnect per local codes. Use copper conductors only when splice connectors are used.

All field wiring must comply with local requirements.

Install conduit through side panel openings indicated in Fig. 6. Route power lines through connector to terminal connections as shown in Fig. 9.

Voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in Table 2, Note 2 to determine the percentage of 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 field-installed thru-the-bottom connections are used, refer to the accessory installation instructions for power wiring. Refer to Fig. 6 for drilling holes in basepan.

FIELD CONTROL WIRIN G — 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.

NOTE: For wire runs up to 15 m (50 ft), use no. 18 AWG (American Wire Gage) insulated wire (35 C minimum). For 15 to 23 m (51 to 75 ft), use no. 16 AWG insulated wire (35 C minimum). For over 23 m (75 ft), use no. 14 AWG insulated wire (35 C minimum). All wire larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat. Refer to Table 3 for wire conversions.

Page 9

Table 2 — Electrical Data

UNIT 48TF

008

012

014

LEGEND

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

*Fuse or HACR circuit breaker.

NOTES:

1. In compliance with NEC requirements (U.S.A. Standard) for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR 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. % Voltage Imbalance

= 100 x

NOMINAL VO LTAG E

(50 Hz)

400

(3 phase)

400

(3 phase)

400

(3 phase)

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

max voltage deviation from average voltage

VOLTAGE

RANGE

Min Max RLA LRA FLA FLA MCA MOCP* FLA LRA

360 440 6.4 42.0 0.3 2.6 17.6 20 18 108

360 440 8.9 52.0 0.3 2.6 23.2 30 24 128

360 440 10.4 73.0 0.7 5.4 29.4 35 31 192

Use the following formula to determine

average voltage

COMPR

(ea)

OFM

(ea)

IFM POWER SUPPLY

Example: Supply voltage is 400-3-50.

AB = 393 v BC = 403 v AC = 396 v

Average Voltage =

= 397

Determine maximum deviation from average voltage.

(AB) 397 – 393 = 4 v (BC) 403 – 397 = 6 v

(AC) 397 – 396 = 1 v Maximum deviation is 6 v. Determine percent 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.

= 1.5%

6 397

MINIMUM UNIT

DISCONNECT

393 + 403 + 396

1192

Route thermostat cable or equivalent single leads of colored wire from thermostat subbase terminals to low-voltage connections on unit (shown in Fig. 10) as described in Steps 1-4 below.

1. If unit is mounted on roof curb and accessory thru-thecurb service plate connection is used, route wire through connection plate.

2. Pass control wires through the hole provided on unit (see connection D in Connection Sizes table in Fig. 6).

3. 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. 11. The raceway provides the UL-required (Underwriters’ Laboratories) clearance between highand low-voltage wiring.

4. Connect thermostat wires to screw terminals on lowvoltage connection board.

HEAT ANTICIPATOR SETTINGS — Set heat anticipator settings at .14 amp for the first stage and .20 amp for secondstage heating, except for 008 low heat. Set both first and second stage heat anticipator settings for 008 at .14 amp.

Table 3 — American/European Wire Conversions

AMERICAN EUROPEAN

Industry

Standard Size

18 AWG 16 AWG 14 AWG 12 AWG 10 AWG

8 AWG 6 AWG 4 AWG 3 AWG 2 AWG

1 AWG 1/0 AWG 2/0 AWG 3/0 AWG 4/0 AWG

250 kcmil 300 kcmil 350 kcmil 400 kcmil 500 kcmil 600 kcmil

AWG — kcmil —

American

Conversion

Size (mm

13.29 16.0

21.14 25.0

26.65 —

33.61 35.0

42.39 50.0

53.49 —

67.42 70.0

85.00 95.0

107.19 120.0

126.64 150.0

151.97 —

177.90 185.0

202.63 240.0

253.29 300.0

303.95 —

LEGEND

American Wire Gage Thousand Circular Mils

)

0.82 1.0

1.30 1.5

2.08 2.5

3.30 4.0

5.25 6.0

6.36 10.0

Industry

Standard

Size (mm

)

Page 10

Fig. 9 — Power Wiring Connections

LEGEND

C— IFC —

NEC —

Contactor Indoor (Evaporator) Fan Contactor National Electrical Code (U.S.A. Standard)

Splice Connection (Factory Supplied)

Equipment Ground

Field Wiring Factory Wiring

LEGEND

AHA — CC —

Adjustable Heat Anticipator Cooling Compensator Field Wiring

Factory Wiring

Fig. 10 — Low-Voltage Connections

UNIT LOW VOLTAGE CONNECTION BOARD

RACEWAY

COMPRESSOR NO. 2

INTEGRATED GAS UNIT CONTROLLER (IGC)

COMPRESSOR NO.1

Fig. 11 — Field Control Wiring Raceway

and Compressor Location

Page 11

Step 8 — Adjust Factory-Installed Options

Fig. 13 — Damper Panel with Manual

Outdoor-Air Damper Installed

Fig. 14 — Outdoor-Air Hood Details

Fig. 15 — Damper with Hood Attached

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

VVT

systems.

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. See Fig. 12 for Apollo location.

MANUAL OUTDOOR-AIR DAMPER — The outdoor-air hood and screen are attached to the base pan at the bottom of the unit for shipping.

Assembly:

1. Determine quantity of ventilation required for building. Record amount for use in Step 8.

2. Remove and save evaporator coil access panel and screws. See Fig. 13.

3. Separate hood and screen from basepan by removi ng the screws and brackets securing them. Save al l screws and discard brackets.

4. Replace evaporator coil access panel using screws from Step 2.

5. Place hood on front of evaporator coil access panel. See Fig. 14 for hood details. Secure top of hood with the screws removed in Step 3. See Fig. 15.

6. Remove and save 6 screws (3 on each side) from sides of the manual outdoor-air damper. Remove and save 2 manual outdoor-air adjustment screws (one on ea ch side of damper bl ade) .

7. Align screw holes on hood with screw holes on side of manual outdoor-air damper. See Fi g. 14 and 15. Secure hood with 6 side screws from Step 6.

8. Adjust minimum position setting of the dampe r blade by adjusting the 2 manual outdoor-air adjustment screws on the front of the damper blade. See Fig. 13. Slide blade vertically until it is in the appropriate position determined by Fig. 16. Tighten screws.

9. Remove and save screws currently on sides of hood. Insert screens. Secure screens to hood using the screws. See Fig. 15.

WIRING TO THERMOSTAT

APOLLO CONTROL

CONTROL WIRING

Fig. 12 — Apollo Control Factory-Installed

in Typical Unit

Page 12

1.0

Fig. 17 — Access Panel Locations

250

0.8

200

0.6

150

2" (51 mm)

0.4

100

NEGATIVE PRESSURE (Pa)

NEGATIVE PRESSURE (in. wg)

0.2

1" (25 mm) OPEN

200

300

OUTDOOR AIRFLOW (cfm x 100)

100

OUTDOOR AIRFLOW (L/s)

3" (76 mm)

4.4" (112 mm)

10 12

400

500

Fig. 16 — Position Setting

OPTIONAL DURABLADE ECONOMIZER — The optional economizer hood assembly is packaged and shipped in the filter section. Dampe r blades an d contro l boards are instal led at the factory and the ec onomizer is shipped in the vertical di scharge 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 is required in building. If so, determine the minimum amount to be supplied by ea ch unit and record quantity of ventilation air needed for use in Step 8.

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. 17. Remove optional economizer and outdoor-air damper hood package from filter section.

3. Assemble outdoor-air hood t op and side plates as shown in Fig. 18. Install seal strips on hood top and sides. Put aside screen retainer and retainer screw for later assembly . Do not attach hood to unit at this time.

4. On 012 and 014 units, install vertical discha rge block-off plate on right side over return air duct opening. See Fig. 19.

5. a. Slide economizer into unit and secure with screws.

See Fig. 20.

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

b. Remove screw and discard from barometric relief

damper. See Fig. 20.

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

mizer motor faces the condenser section (see Fig. 21).

b. Rotate the barometric relief damper hinge

90 degrees. Barometric relief damper should open vertically to operate properly.

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. 22.

7. Insert economizer plug into economizer harness. Remove tape from barometric relief damper. See Fig. 20.

8. If ventilation air is not required, proceed to Step 9. If ventilation air is required, determine the minimum position setting for required airflow. See Fi g. 23. Adjust minimum position setting by loosening the screws on the position setting bracket. See Fig. 24. Slide bracket until the top screw is in the position determined by Fig. 23. Tighten screws.

9. Remove tape from outdoor-air thermostat (OAT). Fasten OAT to inside of hood using screws and spee d clips provided. See Fig. 25. Make sure OAT terminals are positioned up.

10. Replace outdoor-air opening panel using screws from Step 2. Replace filter acce ss panel. Ensure the filter a ccess panel slides along the tracks and is securely engaged.

11. Fasten hood top and side plate assembly to outdoor-air opening panel with screws provided.

12. Place knob supplied with economizer on OAT. See Fig. 25. Set OAT for 1.7° C (3° F) below indoor room thermostat setting. If accessory enthal py control (EC) is used in place of OAT, see instructions shipped with EC for installation and adjustment. See Fig. 25.

13. Connect OAT per Fig. 26.

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

NOTE: Refer to Fig. 27 for Durablade economizer barome tric relief damper characteristics.

OUTDOOR-AIR OPENING PANEL

FILTER ACCESS PANEL

Page 13

ECONOMIZER

ECONOMIZER CONTROL BOARD

ECONOMIZER MOTOR

POSITION SETTING BRACKET

BLOCK-OFF PLATE

CONTROL BOARD

SHIPPING SCREW

ECONOMIZER PLUG

ECONOMIZER MOTOR

TOP SCREW

Fig. 20 — Durablade Economizer Installed in Unit

Fig. 18 — Outdoor-Air Hood Details

Fig. 21 — Horizontal Durablade Economizer

Installation (90 Degree Rotation)

Fig. 19 — Vertical Discharge Block-Off Plate

(48TF012, 014 Units Only)

Fig. 22 — Horizontal Discharge Block-Off Plate

Page 14

Example:

Given —

Negative Pressure . . . . . . . . . . . . . . . . . . . . . . . . . 25 Pa (0.1 in. wg)

Outdoor Airflow . . .. . . . . . . . . . . . . . . . . . . . . . . . 520 L/s (1100 cfm)

Determine —

Setting = 150 mm (6 in.)

Fig. 23 — Durablade Economizer Damper Minimum

Position Setting

TOP

OUTSIDE AIR SCREEN

OAT (TERMINALS ARE UP)

UNIT

Fig. 24 — Durablade Economizer Minimum

Position Damper Setting

ENTHALPY CONTROL

HOOD

OPEN

OUTDOOR TEMP

8 0

POSITION

MINIMUM

CONT

OR UNPOWERED ST

ACT RA

CTS SHO

4 V

–SETPOINTS

TINGS: 1.5A

DAMPER

WN IN HIGH ENTHALPY

OPEN

3 m

RUN, 3.5A IN

–CCW

. A

DAMPER

CLOSED

T 1

1 VDC

7-36

ENTHALPY CONTROL

V A C

TR1

Fig. 25 — Outdoor-Air Thermostat/

Enthalpy Control Installation

Page 15

Fig. 26 — Wiring Connections for

CONTROLLER

BAROMETRIC RELIEF DAMPERS

OUTDOOR AIR TEMPERATURE SENSOR

GEAR-DRIVEN DAMPER

ACTUATOR

ECONOMI$ER PLUG

Fig. 28 — EconoMi$er Component Locations

OUTDOOR-AIR OPENING PANEL

FILTER ACCESS PANEL

Fig. 29 — Typical Access Panel Locations

OUTDOOR AIR OPENING PANEL

SEAL STRIP

EXHAUST AIR SCREEN

EXHAUST AIR HOOD TOP

SCREEN RETAINER

EXHAUST AIR HOOD SIDES

EXHAUST AIR BOTTOM BRACKET

Fig. 30 — Exhaust Air Hood Assembly

Outdoor-Air Thermostat

175

150

125

100

PRESSURE DROP (Pa)

0.70

0.60

0.50

0.40

0.30

PRESSURE DROP (in. wg)

0.20

0.10

0.00

200 400 600 800 1000 1200

100 200 300

CFM

L/s

Fig. 27 — Durablade Economizer Barometric Relief

Damper Characteristics

400 500

570

OPTIONAL ECONOMI$ER — See Fig. 28 for EconoMi$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. 29.

NOTE: If installing an optional Power Exhaust Assembly, refer to the EconoMi$er Power Exhaust Installation Instructions, then proceed to Step 6. Controller should be mounted in vertical position as shown in Fig. 28.

2. To assemble the hood assembly remove the EconoMi$er hood from its packaging. Locate the outdoor air opening panel. See Fig. 30.

3. Install the 19 mm x 19 mm ( exhaust air hood top panel. Install the 3 mm x 22 mm (1/8 x 7/8-in.) seal strip on the exhaust air hood side panels and bottom brackets. Assemble the exhaust air hood to the outdoor air opening panel as shown in Fig. 30, using the screws provided. Do not attach hood assembly to unit

at this time.

4. Install the 3 mm x 22 mm ( outdoor air hood top and side panels. Assemble the outdoor air hood to the outdoor air opening panel as shown in Fig. 31, using the screws provided. Do not attach com-

pleted hood (Fig. 32) assembly to the unit at this time.

/4 x 3/4-in.) seal strip on the

/8 x 7/8-in. seal strip on the

Page 16

OUTDOOR AIR

Fig. 35 — EconoMi$er Installed in

48TF008 and 012 Units

Fig. 34 — Rear EconoMi$er Flange Installation

Fig. 33 — Return Air Block-Off Plate Installation

(48TF014 Units Only)

OPENING PANEL

SEAL STRIP

OUTDOOR AIR HOOD TOP

SCREEN RETAINER

OUTDOOR AIR INLET SCREENS

ASSEMBLED EXHAUST HOOD

OUTDOOR AIR HOOD SIDES

SEAL STRIP

Fig. 31 — Outdoor Air Hood Assembly

Fig. 32 — Completed Hood Assembly

INSTALL RETURN AIR

BLOCK-OFF PLATE

UNIT FILTER RACK

UNIT BASE

BLOWER

FILTER

REMOVE FACTORY INSTALLED BLOCK-OFF PLATE (008 AND 012 UNITS ONLY)

ECONOMIZER CLIP HVAC UNIT

ECONOMIZER

ECONOMIZER REAR FLANGE

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. Do not attach hood assembly to unit at this

time.

6. For 48TF014 units, install the return air block-off plate over the return air duct opening. See Fig. 33.

NOTE: For 48TF008 and 012 units, remove the factoryinstalled block-off plate. See Fig. 33.

7. Slide the EconoMi$er assembly into the rooftop unit. See Fig. 34 and 35.

NOTE: Be sure to engage rear EconoMi$er flange under tabs in return air opening of the unit base. See Fig. 34.

8. Install the outdoor air block-off plate, then secure the EconoMi$er with the screws provided. See Fig. 35.

9. Remove and store the 12-pin jumper plug from the unit wiring harness located in the upper left corner and insert the EconoMi$er plug into the unit wiring harness. Refer to wiring diagram Fig. 36 and 37. Also refer to Fig. 38 if installing an accessory power exhaust.

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

11. Remove the indoor fan motor access panel.

12. Mount the supply air temperature sensor to the lower left portion of the indoor blower housing with the two (2) screws provided (see Fig. 39). Connect the violet and pink wires to the corresponding connections on the supply air temperature sensor. Replace the indoor fan motor access panel.

WIRING HARNESS

OUTDOOR AIR BLOCK-OFF PLATE

Page 17

OAT —

LEGEND

Outdoor-Air Thermostat

Fig. 36 — EconoMi$er Wiring

ECONOMI$ER CONTROLLER

OAT COM

OAH

+15 V

RAT

COM

RAH

+15 V

(+)

COM

DAT

COM

REM POT

COM

LED COM

BROWN VIOLET

WHITE

RED

BROWN

VIOLET WHITE

RED

SUPPLY AIR

TEMPERATURE SENSOR

PINK

VIOLET

TEMP

TEMP COM OUT

PWR

TEMP TEMP COM

OUT PWR

SENSOR

V+ COM VAC

OUTDOOR AIR SENSOR

RETURN AIR SENSOR

Fig. 37 — EconoMi$er Sensor Wiring

Page 18

TO FUSED

DISCONNECT

2 x 4 IN.

HANDY BOX

BLACK L1 BLUE L2

GREEN GND

(460 VAC)

HT01AH850

22 33

230 VAC

1 PHASE

RED YELH1BLU

SECONDARY

230VAC

4-PIN

CONNECTOR

PLUG

L1 L2

GND

GREEN

GRAY

BLACK

BLUE

FIELD SUPPLIED WIRING

BROWN

GREEN/ YELLOW

BROWN

GREEN/ YELLOW

FAN 1

FAN 2

BLACK

LT. BLUE

BLACK

BLUE

BLACK

LT. BLUE

BLACK

BLUE

24 VAC

3-PIN

CONNECTOR

PLUG

ORANGE

YELLOW

BROWN

Fig. 38 — Wiring Diagram for Power Exhaust System

SUPPLY AIR TEMPERATURE SENSOR MOUNTING LOCATION

SUPPLY AIR TEMPERATURE SENSOR

Fig. 39 — Supply Air Sensor Placement

Page 19

Control Set Up — If a CO2 sensor is not being used, pro-

400

800

1200

1600

2000

2400

FLOW (CUBIC FEET/MINUTE)

0.5

0.4

0.3

0.2

0.1

STATIC PRESSURE (IN.WG)

PRESSURE DROP (Pa)

FLOW (L/s)

200

400

600

800

125

100

1000 1200

Fig. 40 — EconoMi$er Control Adjustment

Potentiometers (Factory Settings)

Fig. 41 — EconoMi$er Barometric Relief Capacity

ceed to the next section. If a CO

sensor is being used, perform

the following:

1. Determine the value at which you want the minimum position of the dampers to begin opening to allow a greater amount of outdoor air to enter. The range is 800 to 1,400 ppm.

2. Locate the CO

SP (PPM) potentiometer and adjust to the

desired set point. See Fig. 40.

Mechanical Cooling Lockout

— Determine the outdoor-air temperature at which you want the mechanical cooling (compressors) to be disabled. Locate the mechanical cooling lockout (MECH CLG LOCKOUT) potentiometer. To disable this feature, turn the potentiometer counterclockwise (CCW) to the OFF position. Otherwise, set the value between –12 and 15 C (10 and 60 F). Mechanical cooling will not operate when the outdoor air temperature is below this value. See Fig. 40.

Dry Bulb Cha ngeover Set Up

— Determine the dry bulb changeover set point from T able 4. The settings are A, B, C and D. Locate the ECON SP potentiometer and set the dry bulb changeover set point. See Fig. 40. When the OAT is above this set point, the damper is limited to minimum position setting.

Table 4 — Changeover Set Points

SETTINGS ABCD

Dry Bulb C (°F)

Single Enthalpy* KJ/Kg (Btu/lb)

Differential Temperature* C (°F, Not Adjustable)

Differential Enthalpy* KJ/Kg (Btu/lb, Not Adjustable)

*Field-installed accessory.

(73)21(69)19(66)17(63)

(27)58(25)56(24)51(22)

1.1

(2)

(1)2(1)2(1)2(1)

(2)

1.1 (2)

4. Calculate the minimum airflow across the EconoMi$er. a. Calculate % of outside air using the following

formula. % Outdoor air through EconoMi$er

% Outdoor air =

Mixture Temp – Return Air Temp Outdoor T emp – Return Air Temp

b. Multiply total CFM by percentage outdoor air, this

gives outdoor air vol ume in CFM.

5. T urn on base unit power. NOTE: The EconoMi$er begins operation three min-

utes after power up.

Personal Injury Hazard. Avoid possible injury by keeping fingers away from damper blades.

6. See Fig. 41 for barometric relief damper characteristics.

If a potentiometer fails, its setting will default to the values

in Ta ble 5.

Table 5 — Default Potentiometer Settings

POTENTIOMETER DEFAULT SETTING

SP (PPM)

MECH CLG LOCKOUT, C (F) ECON SP MIN POS (%)

Ventilation Air (Minimum Position Set Up) air is not required, proceed to Step 5. If ventilation air is required, perform the following:

1. The indoor fan must be on to set the ventilation air. Either put the thermostat in the continuous fan mode or jumper the R and G terminals at the rooftop unit connection board.

2. Locate the minimum position (MIN POS) potentiometer. Turn the potentiometer full CCW to fully close the out door air dampers. Turn the potentiometer gradually clockwise (CW) to the desired position. See Fig. 40.

3. Replace the filter access panel. See Fig. 21. Ensure the filter access panel slides along the tracks and is securely engaged.

1,000

8.3 (47) D

— If ventilation

Page 20

Step 9 — Adjust Evaporator-Fan Speed —

Fig. 42 — Typical Belt-Drive Motor Mounting

for Size 008

Fig. 43 — Typical Belt-Drive Motor Mounting

for Sizes 012,014

Fig. 44 — Evaporator-Fan Pulley Adjustment

just evaporator-fan speed to meet jobsite requirement.

T a ble 6 shows motor performance. Tables 7 and 8 show fan rpm at motor pulley settings, Table 9 shows motor efficiencies and Table s 10 and 11 give accessory static pressure drops. Refer to Tables 12-23 to determine fan speed settings. Fan motor pulleys are factory set for speed shown in Table 1A or 1B.

T o change fan speed:

1. Shut off uni t power supply and install lockout tag.

2. Loosen belt by loosening fan motor mounting plate nuts (see Fig. 42 and 43).

3. Loosen movable pulley flange setscrew (see Fig. 44).

4. Screw movable flange toward fixed flange to increase fan speed and away from fixed flange to decrease fan speed. Increasing fan speed increases load on motor. Do not exceed maximum speed specified in Table 1A or 1B.

5. Set movable flange at nearest flat of pulley hub and tighten setscrew (see Table 1A or 1B for speed change for each full turn of pulley flange).

T o align fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley along fan shaft.

3. Make angular alignment by loosening motor from mounting plate.

T o adjust belt tension (see Fig. 42 and 43):

1. Loosen fan motor mounting nuts.

2. Size 008 — Slide motor mounting pla te away from fan scroll for proper belt tension (13 mm [ with 3.6 to 4.5 kg [8 to 10 lbs] of force) and tighten mounting nuts. See Fig. 42.

Sizes 012,014 — Slide motor mounting plate downward to tighten belt tension (13 mm [ to 4.5 kg [5 to 10 lbs] of force) and tighten mounting nuts. See Fig. 43.

/2-in.] deflection with 2.3

3. Adjust bolt and nut on mounting plate to secure motor in fixed position. See Fig. 44.

Realign fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley along fan shaft.

3. Make angular alignment by loosening motor from mounting plate.

/2-in.] deflection

Ad-

MOTOR MOUNTING PLATE NUTS

Table 6 — Evaporator-Fan Motor Performance

UNIT 48TF

008 012 014

BHP — BkW —

UNIT RATED

VOLTAGE

400 2.76 2.90 2615 3.6 400 2.76 3.70 3313 5.0 400 2.76 3.70 3313 5.0

LEGEND *Extensive motor and electrical testing on these units ensures that

Brake Horsepower kW x Motor Efficiency

MAXIMUM ACCEPTABLE

CONTINUOUS

BkW*

MAXIMUM ACCEPTABLE

CONTINUOUS

BHP*

the full range of the motors can be utilized with confidence. Using your fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

MAXIMUM ACCEPTABLE

OPERATING

WATTS

MAXIMUM

AMP DRAW

Page 21

Table 7 — Fan R/s at Motor Pulley Settings (SI)

UNIT 48TF

008 012 014

11.70 11.35 11.00 10.65 10.30 9.95 9.60 9.25 8.90 8.55 8.20

13.00 12.65 12.30 11.95 11.60 11.25 10.90 10.55 10.20 9.85 9.50

15.00 14.70 14.40 14.10 13.80 13.50 13.20 12.90 12.60 12.30 12.00

Table 8 — Fan Rpm at Motor Pulley Settings (English)

UNIT 48TF

008 012 014

700 681 660 639 618 597 576 555 534 513 492 779 760 739 718 697 676 655 634 613 592 571 900 883 865 843 825 807 789 771 753 735 717

Table 9 — Evaporator-Fan Motor Efficiency

MOTOR

48TF

D/E/F008 D/E/F012 D/E014

NOTE: Convert watts to bhp using the following formula:

bhp =

watts input x motor efficiency

746

EFFICIENCY (%)

80 80 85

MOTOR PULLEY TURNS OPEN

Table 10 — Accessory/FIOP Static Pressure Drop (Pa) — 48TF008-014

UNIT 48TF RATED VOLTAGE L/s

008-014

FIOP —

Factory-Installed Option

All

Table 11 — Accessory/FIOP Static Pressure Drop (in. wg) — 48TF008-014

UNIT 48TF RATED VOLTAGE CFM

008-014

All

DURABLADE ECONOMIZER

PRESSURE DROP

ECONOMI$ER

1100 5 — 1200 6 — 1300 7 — 1400 8 31 1500 9 35 1600 10 41 1700 11 50 1800 12 59 1900 13 67 2000 14 75 2100 15 84 2200 16 90 2300 17 97

DURABLADE ECONOMIZER

PRESSURE DROP

ECONOMI$ER

2200 .02 .07 2500 .02 .09 3000 .03 .13 3500 .04 .18 4000 .05 .23 4500 .06 .30 5000 .07 .36 5500 .08 — 6000 .09 —

FIOP —

Factory-Installed Option

Page 22

Table 12 — Fan Performance, 48TF008 — Vertical Discharge Units (SI)

AIRFLOW

(L/s)

1150 1200 1275 1300 1400 1450 1500 1550 1600 1650 1700

10.1 0.68 11.3 0.86

10.4 0.78 11.5 0.96

10.7 0.81

11.0 0.90

11.3 0.99

11.5 1.06

R/s BkW R/s BkW R/s BkW R/s BkW

8.8 0.45 10.1 0.62 11.2 0.79

9.0 0.47 10.3 0.65 11.4 0.82

9.3 0.53 10.5 0.70 11.6 0.89

9.6 0.58 10.8 0.78

9.9 0.63 11.1 0.85

11.8 1.06 12.8 1.25 13.7 1.48

12.0 1.10 13.0 1.35 14.0 1.56

12.4 1.22 13.3 1.43 14.2 1.67

12.6 1.30 13.6 1.54 14.4 1.78 1750 11.8 1.16 12.9 1.38 13.8 1.65 1800 12.2 1.24 13.2 1.49 14.1 1.75 1850 12.4 1.35 13.4 1.60 1900 12.8 1.47 13.7 1.70

AIRFLOW

(L/s)

250

R/s BkW R/s BkW R/s BkW R/s BkW

1150 13.2 1.15 14.1 1.39 15.1 1.73 1200 13.3 1.21 14.1 1.41 15.2 1.76 1275 13.5 1.28 14.3 1.46 15.3 1.76 1300 13.8 1.37 14.6 1.55 15.2 1.72 1400 14.0 1.45 14.7 1.65 1450 14.1 1.53 14.9 1.73 1500 14.4 1.61 1550 14.5 1.72 1600 1650 1700 1750 1800 1850 1900

14.8 1.80 15.6 2.07 16.3 2.29 17.0 2.49

15.0 1.92 15.8 2.15 16.6 2.42 17.2 2.66

15.2 2.01 16.0 2.27 16.7 2.56 17.5 2.80

15.5 2.14 16.2 2.41 16.9 2.65 17.6 2.92

15.7 2.24 16.4 2.52 17.2 2.82 ——

15.9 2.37 16.7 2.66 17.4 2.92 ——

16.2 2.51 16.9 2.78 ————

15.2 1.84 15.8 2.04 16.4 2.18

15.4 1.95 16.1 2.15 16.5 2.34

LEGEND

BkW — R/s —

NOTES:

Fan Input kW x Motor Efficiency Revolutions Per Second of Blower Wheel

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

EXTERNAL STATIC PRESSURE (Pa)

100 150

11.9 0.96 12.8 1.17

12.1 1.02 13.1 1.26

12.3 1.09 13.2 1.29

12.6 1.18 13.5 1.38

14.4 1.84 15.1 2.10

14.6 1.97 15.4 2.24

EXTERNAL STATIC PRESSURE (Pa)

300 350

15.5 1.84 16.5 2.10

15.6 1.88 16.7 2.10

4. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

5. Standard drive range is 8.2 to 11.7 r/s. All other speeds require a field-supplied drive.

6. Maximum continuous BkW is 1.79. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using the fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

7. Interpolation is permissible. Do not extrapolate.

200

12.2 0.96

12.4 1.02

12.6 1.08

14.7 1.88

14.9 2.00

400

15.8 1.96

15.9 2.00

16.1 2.17

16.3 2.17

Page 23

Table 13 — Fan Performance, 48TF012 — Vertical Discharge Units (SI)

AIRFLOW

(L/s)

1500 1550 1600 1650 1700 1750 1800 1850 1900 1950 2000 2050

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

100 150

9.8 0.55 10.9 0.67 12.0 0.79 12.9 0.92

10.0 0.60 11.2 0.74 12.2 0.86

10.3 0.66 11.4 0.80 12.4 0.92

10.6 0.72 11.7 0.86 12.6 0.98

10.9 0.78 12.0 0.93 12.8 1.06

11.1 0.86 12.2 1.00

11.4 0.93 12.5 1.08

11.7 1.00 12.7 1.15

12.0 1.08 12.9 1.23

12.2 1.16

12.5 1.25

12.8 1.34

13.2 1.31 14.1 1.49 14.8 1.63 15.6 1.79

13.4 1.40 14.3 1.59 15.1 1.74

13.7 1.50 14.6 1.69 2100 13.1 1.44 13.9 1.60 2150 13.3 1.53 14.2 1.71 2200 13.6 1.64 2250 13.9 1.75 2300 2400 2450

AIRFLOW

(L/s)

14.2 1.86 15.0 2.06 15.8 2.25 16.6 2.47 ——

14.5 1.98 15.3 2.19 16.1 2.38 —— — —

14.8 2.10 15.6 2.32 ——————

300

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

14.5 1.82 15.3 2.02 16.1 2.21 16.8 2.37

14.7 1.94 15.6 2.13 16.3 2.34 ——

350 400

EXTERNAL STATIC PRESSURE (Pa)

200

13.8 1.04

13.1 0.98 13.9 1.11

13.3 1.05 14.2 1.18

13.6 1.12 14.4 1.25

13.7 1.20 14.6 1.34

13.1 1.14 14.0 1.28 14.8 1.42

13.3 1.22 14.2 1.36 15.0 1.52

13.6 1.31 14.4 1.44 15.2 1.60

13.8 1.40 14.6 1.53 15.4 1.70

15.9 1.90

15.3 1.85 16.1 2.00

14.9 1.80 15.6 1.97 16.3 2.12

15.1 1.91 15.8 2.09 16.5 2.24

EXTERNAL STATIC PRESSURE (Pa)

450

1500 14.6 1.15 15.3 1.26 16.1 1.38 16.9 1.45 17.7 1.68 1550 14.8 1.23 15.5 1.35 16.2 1.47 17.1 1.60 1600 15.0 1.30 15.7 1.44 16.4 1.55 17.1 1.68 1650 15.1 1.39 15.9 1.52 16.6 1.65 17.3 1.77 1700 15.3 1.47 16.1 1.61 16.8 1.74 1750 15.5 1.56 16.3 1.70 1800 15.8 1.66 1850 16.0 1.75 1900 1950 2000 2050 2100 2150 2200 2250 2300 2400 2450

16.2 1.86 16.9 2.01 17.5 2.16 18.2 2.31 ——

16.4 1.96 17.1 2.12 17.7 2.26 18.4 2.43 ——

16.6 2.07 17.3 2.24 17.9 2.39 —— — —

16.8 2.18 17.5 2.36 ——————

17.0 2.30 ————————

17.2 2.41 ————————

—— — — — — —— — — —— — — — — —— — — —— — — — — —— — — —— — — — — —— — — —— — — — — —— — —

16.4 1.80 17.2 1.95 17.8 2.09 18.4 2.22

16.6 1.90 17.3 2.05 18.0 2.20 18.6 2.34

17.0 1.85 17.6 1.98 18.2 2.11

LEGEND

BkW — R/s —

NOTES:

Fan Input kW x Motor Efficiency Revolutions Per Second of Blower Wheel

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

5. Standard drive range is 9.5 to 13.0 r/s. All other speeds require a field-supplied drive.

7. Interpolation is permissible. Do not extrapolate.

17.4 1.88 18.1 2.00

17.8 1.81

17.9 1.86

18.0 1.91

4. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

250

500

Page 24

Table 14 — Fan Performance, 48TF014 — Vertical Discharge Units (SI)

AIRFLOW

(L/s)

1900 1950 2000 2050 2100 2150 2250 2300 2350 2400

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

100 150

12.5 1.10 13.5 1.27 14.4 1.42

12.7 1.18 13.7 1.36 14.6 1.52

13.0 1.27 14.0 1.46 14.9 1.62

13.3 1.36 14.3 1.56

13.6 1.46 14.5 1.66

13.9 1.56 14.8 1.78

14.2 1.67

14.5 1.78

14.8 1.89

15.0 2.01

15.1 1.89 15.9 2.07 16.7 2.24 17.5 2.48

15.4 2.00 16.2 2.19 17.0 2.37 17.7 2.60

15.7 2.13 16.4 2.32 17.2 2.51 18.0 2.72

15.9 2.25 16.7 2.46 17.5 2.64 2450 15.4 2.16 16.2 2.38 17.0 2.60 2500 15.7 2.28 16.5 2.52 17.3 2.75 2550 15.9 2.43 16.8 2.65 2600 16.2 2.58 2650 16.5 2.72 2700 2750 2800 2850 2900 2950 3000 3050 3100

AIRFLOW

(L/s)

16.8 2.89 17.6 3.12 18.4 3.39 19.0 3.60 19.7 3.83

17.1 3.05 17.9 3.28 18.7 3.56 19.3 3.80 20.0 4.01

17.4 3.21 18.2 3.45 18.9 3.74 19.6 3.98 20.2 4.19

17.7 3.40 18.5 3.64 19.2 3.93 19.9 4.18 20.5 4.41

18.0 3.57 18.8 3.81 19.5 4.11 20.2 4.37 ——

18.3 3.76 19.1 4.02 19.8 4.29 —— — —

18.6 3.96 19.4 4.21 20.1 4.51 —— — —

18.9 4.15 19.6 4.40 ——————

19.2 4.38 ————————

300

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

17.1 2.81 17.8 3.05 18.5 3.26 19.2 3.47

17.3 2.95 18.1 3.22 18.8 3.43 19.4 3.64

350 400

EXTERNAL STATIC PRESSURE (Pa)

200

15.3 1.63 16.1 1.81

15.5 1.73 16.4 1.92

15.7 1.81 16.6 2.02

15.1 1.72 16.0 1.91 16.8 2.14

15.4 1.84 16.2 2.01 17.0 2.25

15.7 1.95 16.5 2.13 17.3 2.37

18.2 2.85

17.7 2.79 18.5 2.99

18.0 2.95 18.7 3.13

17.5 2.90 18.2 3.10 18.0 3.29

EXTERNAL STATIC PRESSURE (Pa)

450

1900 17.0 2.00 17.9 2.21 18.7 2.39 19.4 2.58 20.1 2.74 1950 17.2 2.11 18.0 2.31 18.8 2.51 19.6 2.71 2000 17.4 2.22 18.2 2.43 19.0 2.63 2050 17.6 2.33 18.4 2.54 19.2 2.76 2100 17.8 2.45 18.6 2.66 2150 18.0 2.59 2250 18.2 2.71 2300 2350 2400 2450 2500 2550 2600 2650 2700 2750 2800 2850 2900 2950 3000 3050 3100

18.5 2.85 19.2 3.05 19.9 3.29 20.6 3.52 21.3 3.76

18.7 2.99 19.4 3.21 20.1 3.43 20.8 3.67 21.5 3.92

18.9 3.12 19.6 3.36 20.3 3.59 21.0 3.82 21.7 4.08

19.2 3.27 19.8 3.53 20.5 3.74 21.2 3.99 ——

19.4 3.38 20.1 3.67 20.7 3.93 21.4 4.15 ——

19.6 3.54 20.3 3.83 21.0 4.09 21.6 4.33 ——

19.9 3.69 20.5 4.01 21.2 4.27 —— — —

20.1 3.86 20.8 4.16 21.4 4.44 —— — —

20.4 4.03 21.0 4.32 ——————

20.6 4.21 ————————

20.9 4.40 ————————

—————————— —————————— —————————— —————————— —————————— ——————————

18.8 2.79 19.5 3.01 20.3 3.24 21.0 3.46

19.0 2.93 19.7 3.15 20.4 3.37 21.2 3.60

19.3 2.89 20.1 3.10 20.8 3.32

LEGEND

BkW — R/s —

Fan Input kW x Motor Efficiency Revolutions Per Second of Blower Wheel

NOTES:

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

4. Use of a field-supplied motor may affect wire sizing. Contact

5. Standard drive range is 12.0 to 15.0 r/s. All other speeds require a field-supplied drive.

6. Maximum continuous BkW is 2.76. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using the fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

7. Interpolation is permissible. Do not extrapolate.

19.8 2.84 20.5 3.02

19.9 2.97 20.7 3.17

20.3 2.88

your Carrier representative to verify.

250

500

Page 25

Table 15 — Fan Performance, 48TF008 — Horizontal Discharge Units (SI)

AIRFLOW

(L/s)

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

1075 8.1 0.34 1125 1150 1200 1250 1300 1400 1450 1500 1550 1600 1650 1700 1750

8.4 0.39 9.7 0.53 10.9 0.71

8.6 0.42 9.9 0.58 11.1 0.76

8.9 0.46 10.2 0.64 11.3 0.81

9.1 0.51 10.4 0.70 11.5 0.87

9.4 0.56 10.7 0.75 11.7 0.93

9.7 0.62 10.9 0.82

10.0 0.67 11.2 0.88

10.2 0.74 11.4 0.94

10.5 0.80 11.7 1.02

10.8 0.88

11.1 0.97

11.4 1.04

11.7 1.12

100 150

9.5 0.49 10.7 0.66

11.9 1.09 12.9 1.32 13.8 1.53 14.2 1.65

12.2 1.17 13.2 1.41 14.0 1.63 14.4 1.75

12.4 1.25 13.4 1.51 14.3 1.73

12.7 1.35 13.7 1.61

EXTERNAL STATIC PRESSURE (Pa)

1800 12.0 1.23 13.0 1.45 13.9 1.70 1850 12.2 1.33 13.2 1.54 1900 12.5 1.42 13.5 1.65

AIRFLOW

(L/s)

250

R/s BkW R/s BkW R/s BkW R/s BkW

EXTERNAL STATIC PRESSURE (Pa)

300 350

1075 12.9 1.03 13.9 1.29 15.0 1.60 1125 13.0 1.08 14.0 1.34 15.1 1.68 1150 13.1 1.13 14.1 1.38 15.2 1.69 1200 13.3 1.21 14.3 1.42 15.2 1.74 1250 13.5 1.29 14.4 1.48 15.3 1.78 1300 13.7 1.37 14.5 1.56 1400 13.9 1.44 14.7 1.66 1450 14.1 1.52 14.9 1.77 1500 14.3 1.60 1550 14.2 1.68 1600 14.8 1.77 1650 1700 1750 1800 1850 1900

14.9 1.86 15.7 2.13 16.5 2.42 17.2 2.70

15.1 1.97 15.9 2.24 16.6 2.52 17.4 2.82

15.3 2.08 16.1 2.35 16.3 2.64 17.6 2.94

15.5 2.20 16.3 2.45 17.0 2.76 17.7 3.05

15.8 2.32 16.5 2.58 17.2 2.87 17.9 3.19

16.0 2.46 16.7 2.70 17.5 2.99 18.1 3.31

15.1 1.86 15.9 2.08 16.6 2.29

15.3 1.94 16.1 2.21 16.8 2.43

15.5 2.04 16.3 2.31 17.0 2.55

15.4 1.81 16.3 2.09

15.5 1.84 16.4 2.19

15.7 1.97 16.5 2.18

LEGEND

BkW — R/s —

NOTES:

Fan Input kW x Motor Efficiency Revolutions Per Second of Blower Wheel

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

4. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

200

225

11.8 0.81 12.4 0.92

12.0 0.89 12.5 0.98

12.2 0.96 12.7 1.05

12.4 1.02 12.8 1.11

12.6 1.08 13.0 1.19

12.7 1.14 13.2 1.25

12.0 0.99 12.9 1.22 13.4 1.33

12.2 1.07 13.2 1.27 13.6 1.40

12.4 1.15 13.4 1.36 13.8 1.48

12.7 1.23 13.6 1.44 14.0 1.56

14.7 1.85

14.5 1.85 14.9 1.97

14.8 1.95 15.1 2.07

14.2 1.81 15.0 2.08 15.4 2.20

14.4 1.92 15.2 2.20 15.6 2.34

400

15.7 1.89

15.9 1.92

16.0 1.96

16.0 2.01

16.2 2.06

5. Standard drive range is 8.2 to 11.7 r/s. All other speeds require a field-supplied drive.

7. Interpolation is permissible. Do not extrapolate.

Page 26

Table 16 — Fan Performance, 48TF012 — Horizontal Discharge Units (SI)

AIRFLOW

(L/s)

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

1500 9.1 0.49 1550 9.4 0.54 1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200 2300 2350 2400 2500

AIRFLOW

(L/s)

9.6 0.59 10.9 0.73 12.0 0.88 13.0 1.02

9.8 0.65 11.1 0.80 12.2 0.95

10.1 0.71 11.3 0.86 12.4 1.01

10.3 0.77 11.5 0.92 12.6 1.07

10.6 0.84 11.7 0.98 12.8 1.14

10.8 0.92 11.9 1.04 13.0 1.21

11.1 1.00 12.1 1.14

11.3 1.09 12.3 1.22

11.6 1.18 12.6 1.31

11.9 1.28 12.8 1.40

12.1 1.38 13.0 1.50

12.4 1.49

12.7 1.61

12.9 1.74

13.2 1.86 13.9 1.93 14.8 2.03 15.7 2.27 ——

13.5 2.00 14.2 2.05 15.0 2.14 ————

——

300

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

100 150

10.5 0.63 11.6 0.77 12.6 0.89

10.7 0.68 11.8 0.82 12.8 0.96

13.2 1.60 14.2 1.73

13.4 1.70

13.7 1.81 14.6 1.93 15.5 2.15 ——

14.4 2.14 15.2 2.25 ————

350 400

EXTERNAL STATIC PRESSURE (Pa)

13.2 1.29 14.1 1.47 15.0 1.64

13.4 1.38 14.3 1.55 15.2 1.72

13.6 1.47 14.5 1.65

13.8 1.56 14.7 1.73

14.0 1.64

14.4 1.83 15.3 2.04 16.1 2.24

EXTERNAL STATIC PRESSURE (Pa)

13.2 1.09 14.1 1.22

13.4 1.16 14.2 3.10

13.5 1.23 14.4 1.38

13.7 1.30 14.6 1.47

13.9 1.39 14.8 1.55

14.9 1.82 15.8 2.02

15.1 1.93 15.9 2.13

1500 14.5 1.13 15.2 1.22 16.1 1.40 16.8 1.54 1550 14.6 1.20 15.4 1.30 16.2 1.43 16.9 1.60 1600 14.8 1.26 15.6 1.40 16.3 1.50 17.1 1.68 1650 14.9 1.33 15.7 1.48 16.5 1.60 17.2 1.72 1700 15.0 1.42 15.9 1.56 16.7 1.70 1750 15.2 1.51 16.0 1.64 16.8 1.79 1800 15.4 1.61 16.2 1.73 1850 15.6 1.71 1900 1950 2000 2050 2100 2150 2200 2300 2350 2400 2500

15.8 1.80 16.5 1.94 17.2 2.07 18.0 2.24 18.7 2.40

16.0 1.91 16.7 2.06 17.4 2.19 ————

16.2 2.01 16.9 2.17 17.6 2.31 ————

16.3 2.10 17.1 2.29 ——————

16.5 2.21 ————————

16.7 2.32 ————————

16.9 2.43 ————————

—————————— —————————— —————————— ——————————

16.3 1.84 17.1 1.98 17.8 2.15 18.5 2.27

17.0 1.89 17.7 2.03 18.3 2.15

LEGEND

BkW — R/s —

NOTES:

Fan Input kW x Motor Efficiency Revolutions Per Second of Blower Wheel

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

5. Standard drive range is 9.5 to 13.0 r/s. All other speeds require a field-supplied drive.

7. Interpolation is permissible. Do not extrapolate.

17.3 1.81 18.0 1.97

17.5 1.91 18.2 2.04

4. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

200

450

250

13.5 0.99

13.7 1.06

13.9 1.14

15.3 1.82

15.5 1.92

500

17.7 1.82

17.8 1.86

17.9 1.91

18.0 1.97

Page 27

Table 17 — Fan Performance, 48TF014 — Horizontal Discharge Units (SI)

AIRFLOW

(L/s)

1900 11.5 0.96 1950 11.8 1.04 2000 2050 2100 2150 2200 2250 2325 2400 2450 2500 2550 2600

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

100 150

12.7 1.14 13.7 1.32 14.7 1.49

12.9 1.22 13.9 1.40 14.9 1.57

12.1 1.12 13.2 1.29 14.2 1.49

12.3 1.18 13.4 1.38 14.4 1.59

12.6 1.27 13.6 1.46 14.6 1.68

12.8 1.36 13.9 1.56 14.9 1.78

13.1 1.44 14.1 1.66

13.3 1.53 14.4 1.75

13.6 1.63 14.6 1.87

13.9 1.74 14.9 1.98

14.1 1.84

14.4 1.95

14.7 2.07

14.9 2.18

15.1 2.10 16.0 2.31 16.8 2.56

15.4 2.22 16.2 2.44 17.1 2.69

15.6 2.34 16.5 2.56

15.8 2.47 16.7 2.69 2650 15.2 2.32 16.1 2.60 2700 15.4 2.44 16.4 2.74 2750 15.7 2.57 2800 15.9 2.71 2850 2900 2950 3000 3050 3100

AIRFLOW

(L/s)

16.2 2.86 17.1 3.18 17.9 3.46 18.7 3.70 ——

16.5 2.98 17.3 3.32 18.2 3.57 18.9 3.85 ——

16.7 3.11 17.6 3.46 18.4 3.72 ————

17.0 3.25 17.8 3.60 18.7 3.87 ————

17.3 3.38 18.1 3.74 ——————

17.5 3.52 18.3 3.89 ——————

300

R/s BkW R/s BkW R/s BkW R/s BkW R/s BkW

16.6 2.89 17.4 3.11 18.2 8.38 19.0 3.67

16.9 3.03 17.7 3.27 18.4 3.55 19.2 3.84

350 400

EXTERNAL STATIC PRESSURE (Pa)

200

15.6 1.71

15.8 1.80

15.1 1.65 16.0 1.89

15.3 1.75 16.2 1.96

15.5 1.86 16.4 2.05

15.7 1.96 16.6 2.15

15.1 1.88 16.0 2.07 16.8 2.26

15.3 1.99 16.2 2.20 17.0 2.36

15.5 2.10 16.4 2.30 17.2 2.50

15.8 2.20 16.6 2.44 17.4 2.64

17.6 2.77

17.8 2.90

17.3 2.83 18.1 3.05

17.5 2.96 18.3 3.20

16.9 2.83 17.8 3.11 18.5 3.34

17.2 2.96 18.0 3.26 18.7 3.51

EXTERNAL STATIC PRESSURE (Pa)

450

1900 16.6 1.91 17.5 2.11 18.2 2.29 18.9 2.44 19.3 2.55 1950 16.7 2.00 17.6 2.21 18.4 2.41 19.1 2.58 19.6 2.71 2000 16.9 2.11 17.8 2.31 18.6 2.52 19.3 2.71 2050 17.1 2.20 17.9 2.42 18.7 2.64 2100 17.2 2.30 18.1 2.53 18.9 2.76 2150 17.4 2.42 18.2 2.64 2200 17.6 2.52 18.4 2.76 2250 17.8 2.61 2235 18.0 2.71 2400 2450 2500 2550 2600 2650 2700 2750 2800 2850 2900 2950 3000 3050 3100

18.2 2.83 18.9 3.13 19.7 3.39 20.5 3.64 21.2 3.89

18.4 2.97 19.1 3.24 19.9 3.52 20.6 3.77 ——

18.6 3.09 19.3 3.35 20.0 3.66 20.8 3.93 ——

18.8 3.25 19.5 3.49 20.2 3.81 ————

19.0 3.42 19.7 3.63 20.4 3.95 ————

19.2 3.58 19.9 3.81 ——————

19.4 3.73 20.1 3.92 ——————

19.7 3.91 ————————

—————————— —————————— —————————— —————————— —————————— —————————— ——————————

18.6 2.88 19.4 3.11 20.1 3.37 20.9 3.60

18.8 3.00 19.5 3.26 20.3 3.49 21.0 3.75

LEGEND

BkW — R/s —

Fan Input kW x Motor Efficiency Revolutions Per Second of Blower Wheel

NOTES:

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

4. Use of a field-supplied motor may affect wire sizing. Contact

19.0 2.88 19.8 3.10 20.5 3.31

19.2 2.99 20.0 3.23 20.7 3.45

5. Standard drive range is 12.0 to 15.0 r/s. All other speeds require a field-supplied drive.

7. Interpolation is permissible. Do not extrapolate.

19.5 2.84 20.1 3.02

19.6 2.97 20.3 3.17

19.9 2.87

your Carrier representative to verify.

225

500

Page 28

Table 18 — Fan Performance, 48TF008 — Vertical Discharge Units (English)

AIRFLOW

(Cfm)

2200 2250 2300 2400 2500 2550 2600 2700 2800 2900 3000 3100 3200 3300 3400

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

506 0.52 586 0.72 656 0.95 514 0.55 593 0.76 662 0.99 521 0.56 600 0.79 668 1.02 536 0.63 613 0.85 680 1.09 551 0.69 626 0.93 693 1.17 559 0.72 634 0.97 700 1.21 567 0.75 641 1.00 582 0.83 655 1.08 598 0.90 670 1.17 614 0.98 684 1.25 630 1.07 699 1.35 646 1.16 662 1.26 679 1.36 695 1.47

0.2

714 1.45 773 1.74 828 2.04 729 1.55 787 1.86 841 2.16 744 1.66 801 1.98 854 2.29

759 1.78 816 2.10 3500 712 1.59 774 1.90 830 2.23 3600 729 1.71 790 2.03 845 2.37 3700 745 1.84 805 2.17 3750 754 1.91 813 2.24

AIRFLOW

(Cfm)

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

1.0

2200 776 1.43 838 1.78 898 2.21 2250 781 1.78 841 1.81 902 2.25 2300 786 1.50 843 1.83 905 2.28 2400 796 1.59 849 1.88 910 2.31 2500 808 1.69 859 1.96 912 2.31 2550 814 1.74 864 2.01 915 2.34 2600 819 1.79 869 2.06 918 2.37 2700 831 1.89 880 2.17 2800 842 2.00 892 2.29 2900 854 2.11 3000 866 2.23 3100 878 2.35 3200 3300 3400 3500 3600 3700 3750

891 2.48 938 2.81 983 3.14 1026 3.47 904 2.61 950 2.95 995 3.30 —— 917 2.75 963 3.10 1007 3.45 —— 930 2.90 976 3.25 ———— 943 3.05 988 3.41 ———— 956 3.22 —————— 963 3.30 ——————

903 2.42 949 2.71 993 3.03

915 2.54 961 2.85 1003 3.17

926 2.67 972 3.00 1015 3.32

LEGEND

Bhp — Rpm —

NOTES:

Brake Horsepower at Motor Shaft Revolutions Per Minute of Blower Wheel

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

4. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

EXTERNAL STATIC PRESSURE (in. wg)

0.4 0.6

706 1.25 764 1.52 719 1.34 776 1.61 732 1.43 789 1.71 745 1.53 802 1.81 759 1.63 815 1.92

860 2.52 909 2.87 868 2.59 917 2.95

EXTERNAL STATIC PRESSURE (in. wg)

1.2 1.4

927 2.47 976 2.84 938 2.58 983 2.92

5. Standard drive range is 492 to 700 rpm. All other rpms require a field-supplied drive.

6. Maximum continuous bhp is 2.4. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using the fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

7. Interpolation is permissible. Do not extrapolate.

0.8

718 1.18 724 1.22 730 1.26 741 1.34 753 1.43 759 1.48

867 2.42 881 2.56 895 2.71

1.6

935 2.58 939 2.60 943 2.62 952 2.74 963 2.81 968 2.81 973 2.81

Page 29

Table 19 — Fan Performance, 48TF012 — Vertical Discharge Units (English)

AIRFLOW

(Cfm)

3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000 4100 4200

0.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

592 0.76 661 0.93 722 1.09 779 1.26 607 0.83 676 1.01 734 1.17 622 0.90 690 1.09 746 1.25 638 0.98 705 1.17 759 1.33 653 1.06 719 1.26 772 1.43 669 1.15 733 1.35 684 1.24 747 1.44 700 1.33 760 1.54 715 1.43 774 1.64 731 1.54 747 1.65 763 1.76 778 1.88

787 1.74 843 1.98 888 2.16 936 2.30 801 1.85 857 2.10 902 2.30 816 1.97 872 2.23

831 2.10 886 2.36 4300 794 2.00 846 2.23 4400 810 2.13 861 2.37 4500 826 2.27 4600 4700 4800 4900 5000

AIRFLOW

(Cfm)

842 2.41 892 2.67 940 2.92 987 3.21 —— 858 2.55 907 2.83 954 3.08 1002 3.38 —— 874 2.70 922 2.99 968 3.24 ———— 890 2.86 938 3.16 —————— 906 3.03 953 3.33 ——————

1.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

876 2.52 927 2.78 973 3.04 1012 3.26

EXTERNAL STATIC PRESSURE (in. wg)

0.4 0.6

786 1.53 838 1.72 888 1.91 800 1.64 850 1.82 900 2.03 814 1.75 863 1.92 912 2.14 828 1.86 875 2.04 924 2.26

900 2.50 943 2.73 985 2.93 913 2.64 958 2.89 999 3.09

EXTERNAL STATIC PRESSURE (in. wg)

1.4 1.6

0.8

791 1.34 840 1.51 803 1.43 852 1.60 815 1.52 864 1.70 826 1.62 876 1.81

916 2.44 960 2.64 929 2.58 972 2.78

1.8

3000 880 1.58 924 1.73 970 1.89 1019 2.00 1066 2.30 3100 890 1.68 935 1.84 977 2.00 1026 2.17 3200 900 1.77 946 1.95 987 2.11 1029 2.28 3300 910 1.88 957 2.06 998 2.23 1037 2.40 3400 921 1.98 967 2.17 1009 2.35 3500 933 2.10 976 2.29 3600 945 2.22 3700 957 2.34 3800 3900 4000 4100 4200 4300 4400 4500 4600 4700 4800 4900 5000

969 2.47 1010 2.67 1049 2.87 1091 3.08 1128 3.29 981 2.60 1022 2.81 1060 3.02 1100 3.23 ——

993 2.74 1034 2.96 1072 3.17 1110 3.38 —— 1005 2.88 1046 3.11 1084 3.32 ———— 1016 3.03 1058 3.26 —————— 1028 3.17 ———————— 1040 3.32 ————————

——————————

986 2.41 1030 2.61 1069 2.80 1106 2.98 998 2.54 1039 2.74 1081 2.94 1117 3.13

1020 2.48 1058 2.66 1095 2.84

LEGEND

Bhp — Rpm —

NOTES:

Brake Horsepower at Motor Shaft Revolutions Per Minute of Blower Wheel

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

5. Standard drive range is 571 to 779 rpm. All other speeds require a field-supplied drive.

7. Interpolation is permissible. Do not extrapolate.

1047 2.53 1087 2.70

1070 2.44 1075 2.51 1082 2.58

4. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

1.0

829 1.42

948 2.51

2.0

Page 30

Table 20 — Fan Performance, 48TF014 — Vertical Discharge Units (English)

AIRFLOW

(Cfm)

3700 3800 3900 4000 4100 4200 4300 4400 4500 4600 4700

0.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

729 1.36 790 1.58 847 1.79 745 1.46 805 1.69 861 1.89 761 1.56 820 1.80 875 2.02 777 1.67 836 1.92 889 2.14 793 1.79 851 2.05 810 1.91 867 2.18 826 2.04 883 2.32 842 2.17 898 2.46 859 2.31 876 2.46 892 2.60

914 2.60 962 2.85 1010 3.09 1056 3.40 930 2.76 977 3.01 1024 3.26 1070 3.55 945 2.91 992 3.18 2039 3.43

EXTERNAL STATIC PRESSURE (in. wg)

0.4 0.6

904 2.27 955 2.42 1004 2.82 918 2.41 968 2.54 1017 2.96 933 2.55 982 2.79 1030 3.11 948 2.70 996 2.93 1043 3.25

0.8

902 2.06 955 2.29 915 2.17 967 2.41 928 2.29 979 2.55 941 2.40 991 2.68

4800 909 2.77 961 3.07 1008 3.36 1053 3.61 4900 926 2.93 977 3.24 1024 3.54 5000 942 3.11 993 3.41 5100 959 3.29 1009 3.60 5200 976 3.47 5300 993 3.67 5400 5500 5600 5700 5800 5900 6000 6100 6200

1010 3.87 1057 4.18 1102 4.54 1142 4.84 1182 5.13 1027 4.07 1073 4.39 1118 4.76 1157 5.07 1197 5.36 1043 4.29 1090 4.61 1133 4.99 1173 5.31 1211 5.61 1060 4.51 1106 4.83 1149 5.22 1189 5.55 —— 1077 4.74 1122 5.07 1165 5.46 ———— 1094 4.98 1139 5.41 1181 5.70 ———— 1111 5.22 1155 5.55 —————— 1128 5.48 ———————— 1145 5.74 ————————

1025 3.78 1071 4.12 1112 4.40 1153 4.67 1041 3.98 1086 4.33 1127 4.61 1168 4.90

1039 3.73 1080 3.90 1126 4.25 1055 3.92 1097 4.19 1139 4.46

1068 3.80 1111 4.06

1.0

1083 3.71 1097 3.88

AIRFLOW

(Cfm)

1.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

EXTERNAL STATIC PRESSURE (in. wg)

1.4 1.6

1.8

3700 1008 2.55 1060 2.80 1108 3.05 1152 3.27 1190 3.46 3800 1019 2.67 1070 2.94 1118 3.19 1163 3.44 1203 3.65 3900 1029 2.80 1079 3.07 1128 3.34 1173 3.60 4000 1040 2.94 1089 3.22 1137 3.49 4100 1052 3.08 1100 3.36 1147 3.65 4200 1064 3.23 1110 3.51 4300 1076 3.40 1121 3.67 4400 1088 3.56 4500 4600 4700 4800 4900 5000 5100 5200 5300 5400 5500 5600 5700 5800 5900 6000 6100 6200

1101 3.73 1144 4.00 1188 4.31 1232 4.62 1274 4.93 1114 3.90 1157 4.19 1199 4.49 1242 4.81 1284 5.13 1126 4.07 1169 4.38 1210 4.68 1252 5.00 1294 5.33 1140 4.25 1181 4.58 1222 4.87 1263 5.20 —— 1153 4.41 1194 4.77 1234 5.09 1274 5.40 —— 1166 4.59 1207 4.97 1247 5.30 1286 5.62 —— 1180 4.78 1220 5.18 1259 5.52 ———— 1194 4.98 1233 5.38 1272 5.74 ———— 1208 5.19 1246 5.58 —————— 1221 5.41 ———————— 1235 5.64 ————————

1133 3.84 1178 4.14 1222 4.44 1265 4.74

1157 3.81 1202 4.09 1245 4.38 1167 3.97 1212 4.27 1255 4.56

LEGEND

Bhp — Rpm —

Brake Horsepower at Motor Shaft Revolutions Per Minute of Blower Wheel

NOTES:

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

4. Use of a field-supplied motor may affect wire sizing. Contact

5. Standard drive range is 717 to 900 rpm. All other rpms require a field-supplied drive.

6. Maximum continuous bhp is 3.7. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using the fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

7. Interpolation is permissible. Do not extrapolate.

1183 3.76 1225 4.00 1193 3.93 1236 4.19

1214 3.83

your Carrier representative to verify.

2.0

Page 31

Table 21 — Fan Performance, 48TF008 — Horizontal Discharge Units (English)

AIRFLOW

(Cfm)

2200 2250 2300 2400 2500 2550 2600 2700 2800 2900 3000 3100 3200 3300 3400

0.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

499 0.50 580 0.70 652 0.94 507 0.53 586 0.73 658 0.97 513 0.55 592 0.76 663 1.00 528 0.60 606 0.83 674 1.06 542 0.66 619 0.90 686 1.13 550 0.69 627 0.94 692 1.17 557 0.72 634 0.97 698 1.21 573 0.79 648 1.05 588 0.86 662 1.13 604 0.94 676 1.21 620 1.02 690 1.30 636 1.11 652 1.21 668 1.31 684 1.41

704 1.39 764 1.69 818 1.97 844 2.13 718 1.49 778 1.80 831 2.09 856 2.25 732 1.59 793 1.92 844 2.21 869 2.37 747 1.70 807 2.04 857 2.35

EXTERNAL STATIC PRESSURE (in. wg)

0.4 0.6

3500 701 1.53 762 1.82 821 2.16 3600 717 1.65 777 1.94 835 2.29 3700 733 1.77 792 2.07 3750 742 1.84 800 2.14

AIRFLOW

(Cfm)

1.0

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

EXTERNAL STATIC PRESSURE (in. wg)

1.2 1.4

2200 779 1.43 839 1.78 905 2.21 2250 783 1.46 843 1.81 908 2.25 2300 786 1.49 846 1.84 910 2.25 2400 795 1.58 853 1.88 912 2.31 2500 806 1.68 859 1.94 919 2.37 2550 812 1.74 864 1.99 920 2.39 2600 816 1.79 868 2.04 2700 827 1.88 878 2.16 2800 837 1.98 889 2.29 2900 848 2.08 3000 849 2.18 3100 870 2.29 3200 882 2.40 3300 3400 3500 3600 3700 3750

894 2.53 942 2.89 989 3.26 1034 3.63 907 2.66 954 3.02 1000 3.40 1044 3.79 919 2.80 966 3.15 1011 3.55 1054 3.94 932 2.95 978 3.30 1022 3.69 1065 4.10 945 3.11 990 3.45 1034 3.84 1076 4.28 952 3.20 997 3.54 1040 3.93 1082 5.27

900 2.41 947 2.70 993 3.01 910 2.52 958 2.85 1002 3.15 920 2.64 968 2.99 1012 3.30 931 2.76 979 3.13 1023 3.47

LEGEND

Bhp — Rpm —

NOTES:

Brake Horsepower at Motor Shaft Revolutions Per Minute of Blower Wheel

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

4. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

0.8

0.9

717 1.17 748 1.30 722 1.22 752 1.34 727 1.26 756 1.38 738 1.34 766 1.46 748 1.41 777 1.55 754 1.45 783 1.60

759 1.49 787 1.64 711 1.29 770 1.58 798 1.73 723 1.38 782 1.66 809 1.82 737 1.48 794 1.76 821 1.92 750 1.58 806 1.86 832 2.02

882 2.51 871 2.48 895 2.64 885 2.63 908 2.79

849 2.42 899 2.78 922 2.95 856 2.49 907 2.86 929 3.03

1.6

951 2.57 955 2.59 959 2.61 967 2.68 971 2.73

974 2.76 921 2.41 976 2.78 928 2.45 983 2.88 937 2.57 986 2.91

5. Standard drive range is 492 to 700 rpm. All other rpms require a field-supplied drive.

7. Interpolation is permissible. Do not extrapolate.

Page 32

Table 22 — Fan Performance, 48TF012 — Horizontal Discharge Units (English)

AIRFLOW

(Cfm)

0.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

3000 552 0.68 3100 565 0.74 3200 3300 3400 3500 3600 3700 3800 3900 4000 4100 4200 4300 4400 4500

578 0.81 656 1.00 723 1.20 591 0.88 668 1.08 734 1.28 605 0.96 680 1.16 745 1.36 619 1.04 691 1.23 755 1.44 633 1.13 703 1.31 766 1.52 648 1.23 714 1.39 777 1.61 662 1.33 726 1.51 677 1.44 738 1.61 692 1.55 750 1.73 707 1.67 762 1.84 722 1.80 775 1.97 737 1.94 752 2.08 768 2.24

4600 783 2.40 4700 4800 4900 5000

AIRFLOW

(Cfm)

799 2.56 841 2.64 894 2.77 949 3.10 994 3.36 814 2.74 855 2.80 906 2.91 961 3.26 ——

—— ——

1.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

632 0.87 701 1.05 761 1.22 644 0.93 711 1.12 772 1.31

787 2.09 848 2.27 800 2.21 860 2.39 814 2.35

827 2.50 883 2.64 937 2.95 983 3.21

868 2.90 918 3.05 972 3.40 —— 883 3.10 931 3.21 ————

EXTERNAL STATIC PRESSURE (in. wg)

0.4 0.6

789 1.72 846 1.95 897 2.18 801 1.82 857 2.06 908 2.29 813 1.94 868 2.17 918 2.40 825 2.05 878 2.28 837 2.16 889 2.40

871 2.51 924 2.80 973 3.07

EXTERNAL STATIC PRESSURE (in. wg)

1.4 1.6

3000 871 1.54 918 1.67 967 1.89 1010 2.09 3100 879 1.63 928 1.78 973 1.94 1018 2.17 3200 887 1.71 937 1.90 981 2.04 1026 2.26 3300 895 1.80 946 2.00 991 2.16 1032 2.32 3400 904 1.91 953 2.10 1000 2.29 3500 914 2.03 961 2.20 3600 924 2.15 970 2.32 3700 935 2.28 3800 946 2.40 3900 4000 4100 4200 4300 4400 4500 4600 4700 4800 4900 5000

956 2.53 1000 2.73 1042 2.91 1085 3.12 1127 3.36 967 2.66 1010 2.87 1052 3.06 1093 3.24 —— 977 2.78 1021 3.02 1062 3.22 1102 3.41 —— 987 2.91 1032 3.17 1072 3.38 ————

999 3.04 1042 3.32 —————— 1008 3.19 ———————— 1019 3.34 ————————

—————————— —————————— —————————— —————————— ——————————

980 2.45 1024 2.64 1069 2.87 1109 3.03 989 2.58 1033 2.76 1077 2.99 1118 3.20

1009 2.41 1051 2.57 1090 2.74 1017 2.53 1061 2.72 1099 2.88

LEGEND

Bhp — Rpm —

NOTES:

Brake Horsepower at Motor Shaft Revolutions Per Minute of Blower Wheel

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

5. Standard drive range is 571 to 779 rpm. All other rpms require a field-supplied drive.

7. Interpolation is permissible. Do not extrapolate.

1041 2.44 1083 2.65

4. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

0.8

1.0

816 1.36

825 1.45 782 1.39 835 1.55 793 1.47 845 1.65 803 1.56 856 1.75 813 1.65 867 1.86 824 1.74 877 1.97 835 1.85 887 2.07

929 2.53

941 2.66 900 252 952 2.80 912 2.66 962 2.93

1.8

2.0

1063 2.46 1070 2.51 1075 2.57 1080 2.64

Page 33

Table 23 — Fan Performance, 48TF014 — Horizontal Discharge Units (English)

AIRFLOW

(Cfm)

3700 677 1.20 3800 691 1.28 3900 705 1.37 4000 4100 4200 4300 4400 4500 4600 4700 4800 4900 5000 5100 5200

0.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

0.4 0.6

748 1.43 810 1.65 869 1.89 761 1.52 822 1.75 880 1.98

773 1.62 834 1.86 891 2.08 720 1.47 786 1.71 847 1.97 734 1.56 800 1.82 860 2.09 749 1.66 813 1.92 873 2.21 764 1.77 826 2.04 886 2.33 779 1.88 840 2.16 899 2.46 793 1.99 854 2.28 808 2.11 868 2.42 822 2.24 882 2.56 837 2.37 896 2.71 852 2.51 867 2.65 882 2.79 896 2.95

910 2.86 963 3.15 1014 3.48

924 3.01 977 3.30 1027 3.65

938 3.17 990 3.46

952 3.33 1003 3.63

5300 911 3.11 967 3.50 5400 926 3.27 981 3.68 5500 940 3.44 5600 955 3.62 5700 5800 5900 6000 6100 6200

970 3.80 1024 4.23 1072 4.59 1118 4.93 1163 5.34 985 3.99 1039 4.42 1086 4.80 1131 5.14 1176 5.56

1000 4.18 1053 4.62 1100 5.02 1144 5.36 —— 1015 4.39 1068 4.83 1114 5.25 1158 5.58 —— 1030 4.59 1083 5.04 1128 5.48 ———— 1046 4.81 1097 5.26 1142 5.71 ————

995 3.86 1044 4.17 1092 4.54 1137 4.91

1010 4.04 1058 4.38 1105 4.73 1150 5.12

EXTERNAL STATIC PRESSURE (in. wg)

902 2.19 956 2.50 914 2.31 967 2.60 926 2.44 978 2.71 938 2.57 989 2.83

951 2.71 1000 2.96 912 2.59 963 2.86 1012 3.09 925 2.73 975 3.00 1024 3.25 937 2.86 988 3.16 1036 3.42 950 3.00 1001 3.32 1048 3.59

1040 3.82 1085 4.12

1053 4.00 1098 4.30 1017 3.80 1066 4.18 1111 4.50 1030 3.98 1079 4.35 1124 4.70

0.8

1.0

928 2.17 937 2.28 947 2.39

1060 3.76 1073 3.94

AIRFLOW

(Cfm)

1.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

EXTERNAL STATIC PRESSURE (in. wg)

1.4 1.6

1.8

3700 984 2.43 1036 2.68 1080 2.90 1114 3.07 1135 3.17 3800 993 2.55 1046 2.81 1092 3.05 1129 3.25 1156 3.39 3900 1002 2.66 1055 2.94 1102 3.20 1143 3.42 1174 3.59 4000 1011 2.79 1064 3.07 1112 3.34 1155 3.59 4100 1021 2.91 1072 3.20 1121 3.49 4200 1030 3.04 1081 3.34 1130 3.64 4300 1040 3.18 1090 3.48 4400 1050 3.31 1100 3.63 4500 1061 3.43 4600 1071 3.56 4700 1082 3.70 4800 4900 5000 5100 5200 5300 5400 5500 5600 5700 5800 5900 6000 6100 6200

1093 3.86 1139 4.24 1185 4.60 1230 4.93 1273 5.28 1105 4.02 1150 4.38 1194 4.77 1239 5.12 1282 5.47 1117 4.20 1161 4.54 1204 4.95 1248 5.31 1291 5.66 1129 4.40 1172 4.71 1214 5.13 1257 5.61 —— 1141 4.60 1183 4.91 1225 5.29 1267 5.70 —— 1153 4.80 1194 5.08 1236 5.47 ———— 1166 5.01 1206 5.29 1247 5.65 ———— 1178 5.22 1218 5.52 —————— 1190 5.44 1230 5.75 —————— 1203 5.67 ————————

—————————— —————————— —————————— —————————— ——————————

1109 3.78 1156 4.09 1203 4.42 1246 4.72 1119 3.93 1166 4.26 1212 4.58 1255 4.91 1129 4.09 1175 4.43 1221 4.76 1264 5.09

1139 3.79 1185 4.08 1226 4.36 1148 3.94 1194 4.25 1236 4.54

LEGEND

Bhp — Rpm —

Brake Horsepower at Motor Shaft Revolutions Per Minute of Blower Wheel

NOTES:

Boldface

indicates field-supplied drive required. (See Note 5.)

2. indicates field-supplied motor and drive are required.

3. Values include losses for filters, unit casing, and wet coils.

4. Use of a field-supplied motor may affect wire sizing. Contact

5. Standard drive range is 717 to 900 rpm. All other rpms require a field-supplied drive.

7. Interpolation is permissible. Do not extrapolate.

1165 3.76 1203 3.99 1175 3.92 1215 4.18

1190 3.80

your Carrier representative to verify.

2.0

Page 34

START-UP

Unit Preparation —

stalled in accordance with these installation instructions and applicable codes. Make sure that Start-Up Checklist, located on back page of this booklet, has been completed and filled out.

Return-Air Filters —

stalled in filter tracks (see Ta bles 1A and 1B). Do not operate unit without return-air filters.

Outdoor-Air Inlet Screens —

must be in place before operating unit.

Compressor Mounting —

spring mounted. Do not loosen or remove compressor holddown bolts. On 48TF014 units, remove the tiedown bands that hold the compressors together.

Internal Wiring —

unit control boxes. Tighten as required. Ensure wiring does not come into direct contact with refrigerant tubing.

Refrigerant Service Ports —

tem has 4 Schrader-type service gage ports: one on the suction line, one on the liquid line, and two on the compressor discharge line. Be sure that caps on the ports are tight. One Schrader-type valve is located under both the high-pressure switch and the low-pressure switch when ordered as an option.

High Flow Valves —

and suction tubes are High Flow Valves. Large black plastic caps distinguish these valves with O-rings located inside the caps. These valves cannot be accessed for servi ce in the field. Ensure the plastic caps are in place and tight or the possibility of refrigerant leakage could occur.

Compressor Rotation —

compressors, it is important to be certain compressor is rotating in the proper direction. To determine whether or not compressor is rotating in the proper direction:

1. Connect service gages to suction and discharge pressure fittings.

2. Energize the compressor .

3. The suction pressure should drop and the discharge pressure should rise, as is normal on any start-up.

If the suction pressure does not drop and the discharge pres-

sure does not rise to normal levels:

1. Note that the evaporator fan is probably also rotating in the wrong direction.

2. T urn of f power to the unit and install lockout tag.

3. Reverse any two of the unit power leads.

4. Reapply power to unit. Reenergize compressor.

The suction and discharge pressure levels should now move

to their normal start-up levels. NOTE: When the compressor is rotating in the wrong direc-

tion, the unit will make an elevated level of noise and will not provide cooling.

Cooling —

system selector switch at COOL position and fan switch at AUTO. position. Adjust thermostat to a setting below room temperature. Compressor, indoor and outdoor fans start on closure of contactors.

Check unit charge. Refer to Refrigerant Charge section, page 37. Unit must operate a minimum of 15 minutes before adjusting charge.

Reset thermostat at a position above room temperature. Compressor and outdoor fans will shut off. Evaporator fan will shut off after 30-second delay .

To start unit, turn on main power supply. Set

Make sure that unit has been in-

Make sure correct filters are in-

Outdoor-air inlet screens

Compressors are internally

Check all electrical connections in

Each refrigerant sys-

Located on the compressor hot gas

On 3-phase units with scroll

TO SHUT OFF UNIT — Set s y stem selector switch at OFF position. Resetting thermostat at a position above room temperature shuts unit off temporarily until space temperature exceeds thermostat setting.

Main Burners —

require no adjustment.

TO CHECK ignition of main burners and heating controls, move thermostat set point above room temperature and verify that the burners light and evaporator fan is energized. After ensuring that the unit continues to heat the building, lower the thermostat setting below the room temperature and verify that the burners and evaporator fan turn off (fan will turn off only if fan selector switch is in the AUTO. position). Refer to Table 24 for the correct orifice to use at high altitudes.

NOTE: Upon a call for heat, the main burners will remain on for a minimum of 60 seconds.

ADJU ST G AS I NPUT — The gas input to the unit is determined by measuring the gas flow at the meter or by measuring the manifold pressure. Manifold pressure should be 872 Pa (3.5 in. wg).

NOTE: Unit uses a 2 stage gas valve. There is no need to adjust the “Low Fire” manifold pressure.

Measure Gas Flow (Natural Gas Units) to the gas flow can be made by changing the manifold pressure. The manifold pressure must be 872 Pa (3.5 in wg). Normal manifold pressure is 872 Pa (3.5 in. wg) in high fire, W1 and W2 inputs to gas valve.

Proceed as follows:

1. T urn of f gas supply to unit.

2. Remove pipe plug on manifold then connect manometer at this point. Turn on gas to unit. Ensure gas valve is in high fire operation.

Observe manifold pressure and proceed as follows to adjust

gas input:

1. Remove cover screw over regulator adjustment screw on gas valve. Ensure gas valve is operating in high fire mode.

2. Turn regulator adjustment screw clockwise to increase gas input, or turn regulator adjustment screw counterclockwise to decrease input. High fire manifold pressure must be 872 Pa (3.5 in. wg).

Unsafe operation of the unit may result if manifold pressure is outside 847 to 897 Pa (3.4 to 3.6 in. wg) range. Personal injury or unit damage may result.

3. Replace cover screw cap on gas valve.

4. Turn off gas supply to unit. Remove manometer from pressure tap and replace pipe plug on gas valve. Turn on gas to unit and check for leaks.

Main burners are factory set and should

— Minor adjustment

Heating

1. Purge gas supply line of air by opening union ahead of gas valve. When gas odor is detected, tighten union and wait 5 minutes before proceeding.

2. T urn on electrical supply and open manual gas valve.

3. Set system switch selector at HEAT position and fan switch at AUTO. or ON position. Set heating temperature lever above room temperature.

4. The induced-draft motor will start, purging heat exchangers.

Page 35

5. After a call for heating, the main burners should light within 5 seconds. If the burners do not light, then there is a 22-second delay before another 5-second ignition try. If the burners still do not light, the time delay is repeated. If the burners do not light within 15 minutes, there is a lockout. T o reset the control, break the 24 v power to W1.

6. The evaporator-fan motor will turn on 45 seconds after the burners are ignited.

7. The evaporator-fan motor will turn off 45 seconds after the thermostat temperature is satisfied.

8. Adjust airflow to obtain a temperature rise within the range specified on the unit nameplate and in Table 1A or 1B.

Table 24 — Altitude Compensation*

31.4, 50.4, AND 59.8 kW (107,000, 172,000 AND

ELEVATION

m or km

(ft)

0-610 m (0-2,000)

610 m (2,000) 914 m (3,000)

1.22 km (4,000)

1.52 km (5,000)

1.83 km (6,000)

2.13 km (7,000)

2.44 km (8,000)

2.74 km (9,000)

3.05 km (10,000)

3.35 km (11,000)

3.66 km (12,000)

3.96 km (13,000)

4.27 km (14,000)

*As the height above sea level increases, there is less oxygen.

Therefore, heat input rate should be reduced at higher altitudes.

†Orifice available through your local distributor.

204,000 BTUH

NOMINAL INPUT

Natural

Gas

Orifice

Size†

3.0 (31) 2.4 (41) 3.2 (30) 2.5 (38)

2.9 (32) 2.3 (42) 3.2 (30) 2.5 (39)

2.9 (32) 2.3 (42) 3.0 (31) 2.4 (40)

2.9 (32) 2.3 (42) 2.9 (32) 2.4 (41)

2.8 (33) 2.2 (43) 2.8 (33) 2.3 (42)

2.8 (34) 2.2 (43) 2.8 (34) 2.2 (43)

2.8 (35) 2.1 (44) 2.8 (35) 2.2 (43)

2.7 (36) 2.1 (44) 2.7 (36) 2.1 (44)

2.6 (37) 2.0 (45) 2.6 (37) 2.1 (44)

2.5 (38) 2.0 (46) 2.5 (38) 2.0 (45)

2.5 (39) 1.9 (47) 2.5 (39) 2.0 (45)

2.4 (40) 1.9 (47) 2.4 (40) 2.0 (46)

2.4 (41) 1.9 (48) 2.4 (41) 1.9 (47)

2.3 (42) 1.9 (48) 2.3 (42) 1.9 (47)

Liquid

Propane

Orifice

Size†

65.6 kW

(224,000 BTUH)

NOMINAL INPUT

Natural

Gas

Orifice

Size†

Liquid

Propane

Orifice

Size†

Integrated Gas Controller (IGC) Operation

NOTE: The default value for the evaporator-fan motor ON and OFF delay is 45 seconds. The Integrated Gas Controller (IGC) modifies this value when abnormal limit switch cycles occur. Based upon unit operating conditions, the ON delay can be reduced to 0 seconds and the OFF delay can be extended to 180 seconds.

When one flash of the LED (light-emitting diode) is observed, the evaporator-fan ON/OFF delay has been modified. If the limit switch trips at the start of the heating cycle during the evaporator ON delay, the time period of the ON delay for the next cycle will be 5 seconds less than the time at which the switch tripped. (Example: If the limit sw itch trips at 30 seconds, the evaporator-fan ON delay for the next cycle will occur at 25 seconds.) To prevent short-cycling, a 5-second reduction will only occur if a minimum of 10 minutes has elapsed sinc e the last call for heating.

The evaporator-fan OFF delay can also be modified. Once the call for heating has ended, there is a 10-minute period during which the modification can occur. If the limit switch trips during this period, the evaporator-fan OFF delay will increase by 15 seconds on the next cycle. A maximum of 9 trips can occur, extending the evaporator-fan OFF delay to 180 seconds. T o rest ore the ori ginal default va lue, rese t the powe r to the unit .

TO SHUT OFF UNIT — Set system s e lector swit ch at OFF position. Resetting heating selector lever below room temperature will shut unit off temporarily until space temperature falls below thermost at se tting .

Safety Relief —

A soft-solder joint at the suction line Schrader port provides pressure relief under abnormal temperature and pressure conditions.

Ventilation (Continuous Fan) —

Set fan and system selector switches at ON and OFF positions, respectively. Evaporator fan operates continuously to provide constant air circulation. When the evaporator-fan sel ector switch is turned to the OFF position, there is a 30-second delay before the fan turns off.

Operating Sequence

COOLING, UNITS WITHOUT ECONOMIZER — When thermostat calls for cooling, terminals G and Y1 are energized. The indoor (evaporator) fan contactor (IFC) and compressor contactor no. 1 (C1) are energized, and evaporator-fan motors, compressor no. 1, an d both conde nser fans s tart. The co ndenserfan motor runs continuously while unit is cooling. If the thermostat calls for a second stage of cooling by energizing Y2, compressor contactor no. 2 (C2) is energized and compressor no. 2 starts.

When the thermostat is satisfied, C1 and C2 are deenergized and the compressors and outdoor (condenser) fan motors (OFM) shut off. After a 30-second delay, the indoor (eva porator) fan motor (IFM) shuts off. If the thermostat fan selector switch is in the ON position, the evaporator motor will run continuously .

HEATING, UNIT S WIT HO UT E C ONO MIZ ER — When the thermostat calls for heat ing, terminal W1 is energized. In order to prevent thermostat short-cycling, the unit is locked into the Heating mode for at least 1 minute when W1 is energized. The induced-draft motor (IDM) is then energized and the burner ignition sequence begins. The indoor (evaporator) fan motor (IFM) is energized 45 seconds after a flame is ignited. On units equipped for two stages of heat, when additional heat is needed, W2 is energized and the high-fire solenoid on the main gas valve (MG V) is energized. W hen the thermo stat is satisfied and W1 and W2 are deenergized, the IF M s tops after a 45-second time-off delay.

COOLING, UNITS WITH DURABLADE ECONOMIZER — When the outdoor-air temperature is above the OAT (outdoor-air thermostat) setting and the room thermostat calls for cooling, compressor contactor no. 1 is energized to start compressor no. 1 and the outdoor (condenser) fan motor (OFM). The indoor (evaporator) fan motor (IFM) is energized and the economizer damper moves to the minimum position. Upon a further call for cooling, compressor contactor no. 2 will be energized, starting compressor no. 2. After the thermostat is satisfied, the damper moves to the fully closed position when using an auto fan or to the minimum position when using a continuous fan.

When the outdoor-a ir temperature is below the OAT setting and the thermostat calls for cooling, the economizer dampers move to the minimum position. If the supply-air temperature is above 14 C (57 F), the damper continues to open until it reaches the fully open position or until the supply-air temperature drops below 11 C (52 F).

When the supply-air temperature falls to between 14 C (57 F) and 11 C (52 F), the damper will remain at an intermediate open position. If the supply-air temperature falls below 11 C (52 F), the damper will modulate closed until it reaches the minimum position or until the supply-air temperature is above 11 C (52 F). When the thermostat is satisfied, the damper will move to the fully closed position when using an auto fan or to the minimum position when using a continuous fan.

Page 36

If the outdoor air alone cannot satisfy the cooling require ments of the conditioned space, economizer cooling is integrated with mechanical cooling, providing second-stage cooling. Compressor no. 1 and the condenser fa n will be energized and the position of the economizer damper will be determined by the supply-air temperature. Compressor no. 2 is locked out.

When the second stage of cooling is satisfied, the compressor and OFM will be deenergized. The damper position will be determined by the supply-air temperature.

After a 30-second delay, the IFM shuts of f. If the thermostat fan selector switch is in the ON position, the IFM will run continuously .

COOLING UNITS WITH ECONOMI$ER — When the OAT is above the ECON SP set point and the room thermostat calls for Stage 1 cooling (R to G + Y1), the indoor fan motor (IFM) is energized and the EconoMi$er dampe r modulates to minimum position. The compressor contactor is energized to start the compressor and outdoor-fan motor (OFM). After the thermostat is satisfied, the damper modulates to the fully closed position when the IFM is deenergized.

When the OAT is below the ECON SP setting and the room thermostat calls for Stage 1 cooling (R to G + Y1), the EconoMi$er modulates to the minimum position when the IFM is energized. The EconoMi$er provides Stage 1 of cooling by modulating the return and outdoor air dampers to maintain a 13 C (55 F) supply air set point. If the supply-air temperature (SAT) is greater than 14 C (57 F), th e EconoMi$er modulates open, allowing a greater amount of outdoor air to enter the unit. If the SAT drops below 12 C (53 F), the out door air damper modulates closed to reduce the amount of outdoor air. When the SAT is between 12 C (53 F) and 14 C (57 F), the EconoMi$er maintains its position.

If outdoor air alone cannot satisfy the cooling requirements of the conditioned space, and the OAT is above the MECH CLG LOCKOUT set point, the EconoMi$er integrates free cooling with mechanical cooling. This is accomplished by the strategies below.

NOTE: Compressors have a two-minute Minimum On, Minimum Off, and interstage delay timer.

1. If Y1 is energi zed, and the room thermostat calls for Y2 (2-stage thermostat), the compressor and OF M are energized. The position of the EconoMi$er damper is maintained at its current value.

2. If Y1 is energiz ed for more than 20 minutes, and Y2 is not energized (whether or not a 2-stage thermostat is used), the compressor and OFM are energized. The position of the EconoMi$er damper is maintained a t its current value.

3. If Y1 is energized, and compressor no. 1 is already energized (see Step 2) and the room thermostat calls for Y2, compressor no. 1 continues to operate. If Y2 remains energized for more than 20 minutes, compressor no. 2 is energized.

NOTE: Compressor no. 2 cannot be energized unless there is a signal for Y2 from the space thermostat.

4. If compressor no. 2 is energized, and the Y2 signal from the thermostat is satisfied, compressors 1 and 2 are deenergized. Re-asserting Y2 will start compressor no. 1 and (after a 20-minute interstage delay) compressor no. 2.

5. If compressor no. 1 is energized and the thermostat is satisfied, compressor no. 1, the OFM, and IFM are deenergized and the EconoMi$er modulates closed.

When the OAT is below the MECH CLG LOCKOUT set

point, the compressors remain off.

SERVICE

When servicing unit, shut off all electrical power to unit to avoid shock hazard or injury from rotating parts.

Cleaning —

heating and cooling season or more frequently as operating conditions require.

EVAP O RATOR COIL — Clean coil as required. Inspect coil at beginning of heating and cooling seasons.

1. T urn unit power of f. Remov e evaporator coil access panel.

2. If economizer is installed, remove economizer by disconnecting Molex plug and removing economizer mounting screws. Refer to Accessory Economizer Installation Instructions or Optional Economizer sections on pages 12 and 15 for more details.

3. Remove filters from unit.

4. Clean coil using a commercial coil cleaner or dishwasher detergent in a pressurized spray canister. Wash both sides of coil and flush with clean water. For be st results, backflush toward return-air section to remove foreign ma terial. Caution should be taken as to not overflow the evaporator drain condensate pan.

5. Flush condensate pan after completion.

6. Reinstall economizer and filters.

7. Reconnect wiring.

8. Replace access panels.

CONDENS ER COIL — Inspect coil monthly. Clean condenser coil annually, and as required by location and outdoorair conditions.

One-Row Coils outer surfaces with a stiff brush in the normal manner. It is not necessary to remove top panel.

2-Row Coils

1. T urn of f unit power.

2. Remove top panel screws on condenser end of unit.

3. Remove condenser coil corner post. See Fig. 45. To hold top panel open, place coil corner post between top panel and center post. See Fig. 46.

4. Remove screws securing coil to center post.

5. Remove fastener holding coil sections together at return end of condenser coil. Carefully separate the outer coil section 3 to 4 in. from the inner coil section. See Fig. 47.

6. Use a water hose or other suitable equipment to flush down between the 2 coil sections to remove dirt and debris. Clean the outer surfaces with a stiff brush in the normal manner.

7. Secure inner and outer coil rows together with a fieldsupplied fastener.

8. Reposition the outer coil section and remove the coil corner post from between the top panel and center post.

9. Reinstall the coil corner post and replace all screws.

CONDENSATE DRAIN — Check and clean each year at start of cooling season. In winter, keep drain dry or protect against freeze-up.

FILTERS — Clean or replace at start of each heating and cooling season, or more often if operating conditions require it. Replacement filters must be same dimensions as original filters.

BELTS — Adjust belt tension and pulley alignment at least twice a year or more frequently as operating conditions require. Refer to Step 9 — Adjust Evaporator for Fan Speed for procedures.

Inspect unit interior at the beginning of each

— Wash coil with commercia l c lea n er. Clean

— Clean coil as follows:

Page 37

Fig. 45 — Cleaning Condenser Coil

Fig. 48 — Condenser-Fan Adjustment

48TF UNIT VOLTAGE FAN HEIGHT “A” (in.)

400 V

89 (3.50)

Lubrication

COMPRESSORS — Each compressor is charged with the correct amount of oil at the factory.

FAN-MOTOR BEARINGS — Fan-motor bearings are of

the permanently lubricated type. No further lubrication is required. No lubrication of condenser- or evaporator-fan motors

is required.

Condenser-Fan Adjustment (Fig. 48)

1. Shut of f unit power supply and tag disconnect.

2. Remove condenser-fan assembly (grille, motor, motor cover, and fan) and loosen fan hub setscrews.

3. Adjust fan height as shown in Fig. 48.

4. T ighten setscrews and replace condenser-fan assembly .

Fig. 46 — Propping Up Top Panel

Fig. 47 — Separating Coil Sections

Manual Outdoor-Air Damper —

If outdoor-air damper blade is required, see Manual Outdoo r-Air Damper sec tion on page 12.

Economizer Adjustment —

Refer to Optional Dura-

blade Economizer section on page 14.

Condenser Coil Grille —

Condenser coil grille is

shipped factory-installed. No adjustments are required.

Refrigerant Charge —

Amount of refrigerant charge is listed on unit nameplate (also refer to Tables 1A and 1B). Refer to Carrier GTAC 2-5 Char ging, Recovery, recycling, and reclamation training manual and the following procedures.

Unit panels must be in place when unit is operating during

charging procedure. NO CHARGE — Use standard evacuating techniques. Aft er

evacuating system, weigh in the specified amount of refrigerant (refer to Tables 1A and 1B).

LOW CHARGE COOLING — Using the Cooling Charging Charts, Fig. 49-51 vary refrigerant until the conditions of the appropriate chart are met. Note the charging charts are different from the type normally used. The charts are based on charging the units to the correct superheat for the various operating conditions. Accurate pressure gage and temperature sensing device are required. Connect the pressure gage to the service port on the suction line. Mount the temperature sensing device on the suction line and insulate it so that outdoor ambient temperature does not affect the reading. Indoor-air cfm must be within the normal operating range of the unit.

TO USE COOLING CHARGING CHARTS — Take the outdoor ambient temperature and read the suction pressure gage. Refer to appropriate chart to determine what suction temperature should be. If suction temperature is high, add refrigerant. If suction temperature is low, carefully reclaim some of the charge. Recheck the suction pressure as charge is adjusted. Example (Fig. 51, Circuit 1):

Outdoor Temperature. . . . . . . . . . . . . . . . . . . . . . . . .13 C (55 F)

Suction Pressure. . . . . . . . . . . . . . . . . . . . . . . .483 kPa (70 psig)

Suction T emperature should be. . . . . . . . . . . . . . . . .23 C (74 F)

(Suction temperature may vary ± 3 C [5 F].)

Page 38

Fig. 49 — Cooling Charging Charts, 48TF008 Units

Fig. 50 — Cooling Charging Charts, 48TF012 Units

Page 39

CIRCUIT NO. 1

Fig. 51 — Cooling Charging Chart; 48TF014 Units

CIRCUIT NO. 2

Flue Gas Passageways —

To ins pect the flue collec-

tor box and upper areas of the heat exchanger:

1. Remove the combustion blower wheel and motor assembly according to directions in Combustion-Air Blower section below.

2. Remove the flue cover to inspect the heat exchanger.

3. Clean all surfaces as required using a wire brush.

Combustion-Air Blower —

Clean periodically to assure proper airflow and heating efficiency. Inspect blower wheel every fall and periodically during heating season. For the first heating season, inspect blower wheel bimonthly to determine proper cleaning frequency.

To inspect blower wheel, shine a flashlight into draft hood opening. If cleaning is required, remove motor and wheel as follows:

1. Slide burner access panel out.

2. Remove the 6 screws that attach induced-draft motor housing to vestibule plate (Fig. 52).

3. The blower wheel can be cleaned at this point. If additional cleaning is required, continue with Steps 4 and 5.

4. To remove blower from the motor shaft, remove 2 setscrews.

5. To remove motor, remove the 4 screws that hold blower housing to mounting plate. Remove the motor cooling fan by removing one setscrew. Then remove nuts that hold motor to mounting plate.

6. To reinstall, reverse the procedure outlined above.

Limit Switch —

Remove blower access panel (Fig. 6).

Limit switch is located on the fan deck.

Burner Ignition —

Unit is equipped with a direct spark ignition 100% lockout system. Integrated Gas Unit Controller (IGC) is located in the control box (Fig. 11). Module contains a self-diagnostic LED (light-emitting diode). A single LED on the IGC provides a visual display of operational or sequential

problems when the power supply is interrupted. When a break in power occurs, the module will be reset (resulting in a loss of fault history) and the indoor (evaporator) fan ON/OFF times will be reset. For additional informa tion, refer to the Start-Up , Heating section on page 34. The LED error code can be observed through the viewport. During servicing refer to the label on the control box cover or Table 25 for an explanation of LED error code descriptions.

If lockout occurs, unit may be adjusted by interrupting pow-

er supply to unit for at least 5 seconds.

Table 25 — LED Error Code Description*

LED INDICATION ERROR CODE DESCRIPTION

OFF

1 Flash† 2 Flashes 3 Flashes 4 Flashes 5 Flashes 6 Flashes 7 Flashes 8 Flashes

9 Flashes**

LEGEND

LED —

*A 3-second pause exists between LED error code flashes. If more

than one error code exists, all applicable codes will be displayed in numerical sequence.

†Indicates a code that is not an error. The unit will continue to oper-

ate when this code is displayed.

**Indicates internal processor fault and will reset itself in 1 hour.

Light-Emitting Diode

IMPORTANT: Refer to Troubleshooting Tables 26-30 for additional information.

Normal Operation Hardware Failure Evaporator Fan On/Off Delay Modified Limit Switch Fault Flame Sense Fault 4 Consecutive Limit Switch Faults Ignition Lockout Fault Induced-Draft Motor Fault Rollout Switch Fault Internal Control Fault Temporary 1 hour automatic reset fault

Page 40

Main Burners —

Fig. 52 — Burner Section Details

Fig. 53 — Burner Tray Details

At the beginning of each heating season, inspect for deterioration, blockage due to corrosion or other causes. Observe the main burner flames and replace burners if necessary .

When working on gas train, do not hit or plug orifice spuds.

REMOVAL AND REPLACEMENT OF GAS TRAIN (Fig. 52 and 53)

1. Shut off manual gas valve.

2. Shut off power to unit and tag disconnect.

3. Slide out burner section side panel (not shown).

4. Disconnect gas piping at unit gas valve.

5. Remove wires connected to gas valve. Mark each wire.

6. Remove wires from ignitor and sensor wires at the Integrated Gas Unit Controller (IGC).

7. Remove the 2 screws that attach the burner rack to the vestibule plate.

8. Slide the burner tray out of the unit (Fig. 53).

9. To reinstall, reverse the procedure outlined above.

CLEANING AND ADJUSTMENT

1. Remove burner rack from unit as described in Removal and Replacement of Gas Train section on this page.

2. Inspect burners; if dirty, remove burners from rack.

3. Using a soft brush, clean burners and cross-over port as required.

4. Adjust spark gap. See Fig. 54.

5. Reinstall burners on rack.

6. Reinstall burner rack as described in Removal and Replacement of Gas Train section.

Replacement Parts —

A complete list of replacement parts may be obtained from any Carrier distributor upon request.

INDUCEDDRAFT MOTOR MOUNTING PLATE

BURNER SECTION

INDUCEDDRAFT MOTOR

MANIFOLD PRESSURE TAP

ROLLOUT SWITCH

FLUE EXHAUST

VESTIBULE PLATE

BLOWER HOUSING

GAS VALV E

Page 41

31.4/21.1 kW INPUT (107,000/72,000 BTUH)

48TFD008

50.4/31.9 kW INPUT/ (172,000/109,000 BTUH)

48TFE008, 48TFD012

48TFD014, 48TFE012, 48TFF008

59.8/39.8 kW INPUT

(204,000/136,000 BTUH)

48TFE014, 48TFF012

65.6/43.9 kW INPUT

(224,000/150,000 BTUH)

NOTE: Dimensions in ( ) are millimeters.

Fig. 54 — Spark Gap Adjustment

Page 42

PROBLEM CAUSE REMEDY

Hardware failure. (LED OFF)

Limit switch fault. (LED 2 flashes)

Flame sense fault. (LED 3 flashes)

4 consecutive limit switch trips. (LED 4 flashes)

Ignition lockout. (LED 5 flashes)

Induced-draft motor fault. (LED 6 flashes)

Rollout switch fault. (LED 7 flashes)

Internal control fault. (LED 8 flashes)

Temporary 1 hour automatic reset fault. (LED 9 flashes)

LEGEND

IGC — LED —

Integrated Gas Unit Controller Light-Emitting Diode

TROUBLESHOOTING

Table 26 — LED Error Code Service Analysis

Loss of power to control module (IGC). Check 5- amp fuse on IGC, power to unit, 24-v circuit breaker,

High temperature limit switch is open. Check the operation of the indoor (evaporator) fan motor.

The IGC sensed flame that should not be present.

Inadequate airflow to unit. Check operation of indoor (evaporator) fan motor and that supply-air

Unit unsuccessfully attempted ignition for 15 minutes.

IGC does not sense that induced-draft motor is operating.

Rollout switch has opened. Rollout switch will automatically reset, but IGC will continue to

Microprocessor has sensed an error in the software or hardware.

Stray radio frequency signals in ?? Processor will be reset after 1 hour.

and transformer. Units without a 24-v circuit breaker have an internal overload in the 24-v transformer. If the overload trips, allow 10 minutes for automatic reset.

Ensure that the supply-air temperature rise is in accordance with the range on the unit nameplate.

Reset unit. If problem persists, replace control board.

temperature rise agrees with range on unit nameplate information. Check ignitor and flame sensor electrode spacing, gaps, etc.

Ensure that flame sense and ignition wires are properly terminated. Verify that unit is obtaining proper amount of gas.

Check for proper voltage. If motor is operating, check the speed sensor plug/IGC Terminal J2 connection. Proper connection: PIN 1— White, PIN 2 — Red, PIN 3 — Black.

lock out unit. Check gas valve operation. Ensure that induceddraft blower wheel is properly secured to motor shaft. Reset unit at unit disconnect.

If error code is not cleared by resetting unit power, replace the IGC.

IMPORTANT: Refer to Table 28 — Heating Service Troubleshooting for additional troubleshooting information.

If the IGC must be replaced, be sure to ground yourself to dissipate any electrical charge that may be present before handling new control board. The IGC is sensitive to static electricity and may be damaged if the necessary precautions are not taken.

Page 43

Table 27 — Cooling Service Troubleshooting

PROBLEM CAUSE REMEDY

Compressor and condenser fan will not start.

Compressor will not start but condenser fan runs.

Compressor cycles (other than normally satisfying thermostat).

Compressor operates continuously.

Excessive head pressure.

Head pressure too low.

Excessive suction pressure.

Suction pressure too low.

Compressor no. 2 will not run. Compressor makes excessive

noise (48TF014 scroll only).

Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer,

or control relay. Insufficient line voltage. Determine cause and correct. Incorrect or faulty wiring. Check wiring diagram and rewire correctly. Thermostat setting too high. Lower thermostat setting below room temperature. Faulty wiring or loose connections in com-

pressor circuit. Compressor motor burned out, seized, or

internal overload open. Defective run/start capacitor, overload, or

start relay. One leg of 3-phase power dead. Replace fuse or reset circuit breaker. Determine

Refrigerant overcharge or undercharge. Recover refrigerant, evacuate system, and

Defective compressor. Replace and determine cause. Insufficient line voltage. Determine cause and correct. Blocked condenser. Determine cause and correct. Defective run/start capacitor, overload, or

start relay. Defective thermostat. Replace thermostat. Faulty condenser-fan motor or capacitor. Replace. Restriction in refrigerant system. Locate restriction and remove. Dirty air filter. Replace filter. Unit undersized for load. Decrease load or increase unit size. Thermostat set too low. Reset thermostat. Low refrigerant charge. Locate leak, repair, and recharge. Leaking valves in compressor. Replace compressor. Air in system. Recover refrigerant, evacuate system, and

Condenser coil dirty or restricted. Clean coil or remove restriction. Dirty air filter. Replace filter. Dirty condenser coil. Clean coil. Refrigerant overcharged. Remove excess refrigerant. Air in system. Recover refrigerant, evacuate system, and

Condenser air restricted or air short-cycling. Determine cause and correct. Low refrigerant charge. Check for leaks, repair, and recharge. Compressor valves leaking. Replace compressor. Restriction in liquid tube. Remove restriction. High heat load. Check for source and eliminate. Compressor valves leaking. Replace compressor. Refrigerant overcharged. Recover excess refrigerant. Dirty air filter. Replace filter. Low refrigerant charge. Check for leaks, repair, and recharge. Metering device or low side restricted. Remove source of restriction. Insufficient evaporator airflow. Increase air quantity. Check filter and replace if

Temperature too low in conditioned area. Reset thermostat. Field-installed filter drier restricted. Replace. Unit in economizer mode. Proper operation; no remedy necessary. Compressor rotating in wrong direction. Reverse the 3-phase power load as described in

Replace component.

Check wiring and repair or replace.

Determine cause. Replace compressor.

Determine cause and replace.

cause.

recharge to nameplate.

Determine cause and replace.

recharge.

necessary.

Start-Up, Compressor Rotation section on page 34.

Page 44

Table 28 — Heating Service Troubleshooting

Burners will not ignite.

Inadequate heating. Dirty air filter. Clean or replace filter as necessary.

Poor fl am e characteristics.

Burners will not Unit is locked into Heating mode for a Wait until mandatory one minute time period has turn off. one minute minimum. elapsed or power to unit.

PROBLEM CAUSE REMEDY

Misaligned spark electrodes. Check flame ignition and sensor electrode positioning.

No gas at main burners. Check gas line for air purge as necessary. After purging

Water in gas line. Drain water and install drip leg to trap water. No power to furnace. Check power supply, fuses, wiring, and circuit breaker. No 24 v power supply to control circuit. Check transformer. Transformers with internal overcurrent

Miswired or loose connections. Check all wiring and wirenut connections. Burned-out heat anticipator in thermostat. Replace thermostat. Broken thermostat wires. Run continuity check. Replace wires, if necessary.

Gas input to unit too low. Check gas pressure at manifold. Clock gas meter for input. If too

Unit undersized for application. Replace with proper unit or add additional unit. Restricted airflow. Clean filter, replace filter, or remove any restrictions. Blower speed too low. Use high speed tap, increase fan speed, or install optional

Limit switch cycles main burners. Check rotation of blower, thermostat heat anticipator settings,

Too much outdoor air. Adjust minimum position.

Incomplete combustion (lack of Check all screws around flue outlets and burner compartment. combustion air) results in: Tighten as necessary.

Aldehyde odors, CO, sooting flame, or floating flame. Cracked heat exchanger.

Adjust as needed.

gas line of air, allow gas to dissipate for at least 5 minutes before attempting to relight unit.

Check gas valve.

protection require a cool down period before resetting.

low, increase manifold pressure, or replace with correct orifices.

blower, as suitable for individual units.

and temperature rise of unit. Adjust as needed.

Check economizer operation.

Overfired unit — reduce input, change orifices, or adjust gas line or manifold pressure.

Check vent for restriction. Clean as necessary. Check orifice to burner alignment.

PROBLEM POTENTIAL CAUSE REMEDY

Damper Does Not Open

EconoMi$er Operation Limited to Minimum Position

Damper Position Less than Minimum Positi on Set Point

Damper Does Not Return to Minimum Positi on

Damper Does Not Close on Power Loss

LEGEND

IFM — PL —

Indoor Fan Motor Plug

Table 29 — EconoMi$er Troubleshooting

Indoor (Evaporator) Fan is Off Check to ensure that 24 vac is present at Terminal C1 (Common Power)

No Power to EconoMi$er Controller Check to ensure that 24 vac is present across Terminals 24 VAC and

No Power to G Terminal If IFM is on, check to ensure 24 vac is present on G Terminal of the

Controller Fault If STATUS light is flashing one flash, the EconoMi$er controller is

Thermostat Fault If STATUS light is flashing two flashes, the EconoMi$er controller senses

Actuator Fault Check the wiring between the EconoMi$er controller and the actuator.

Minimum Position Set Incorrectly Verify that the MIN POS (%) is set greater than zero. Adjust MIN POS (%)

EconoMi$er Changeover Set Point Set Too High or Too Low

Supply Air Temperature Sensor Faulty If STATUS light is flashing 4 flashes, Supply Air Temperature Sensor is

Outdoor Air Temperature Sensor Faulty If STATUS light is flashing 5 flashes, Outdoor Air Temperature Sensor is

Supply Air Low Limit Strategy Controlling The supply-air temperature is less than 7 C (45 F), causing the minimum

Ventilation Strategy Controlling If a CO2 sensor is being used, and the damper position is greater than

Damper Travel is Restricted Check to ensure the damper is not blocked.

on the IFC (Indoor [Evaporator] Fan Contactor) or that 24 vac is present at the IFO (Indoor [Evaporator] Fan On) terminal. Check whether 24 vac is present at PL6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is not present, check wiring (see unit label diagram).

Check proper thermostat connection to G on the connection board.

24 V COM on the EconoMi$er control. If 24 vac is not present, check wiring (see unit label diagram). If 24 vac is present, STATUS light should be on constantly.

EconoMi$er controller. If 24 vac is not present, check wiring (see unit label diagram).

experiencing a fault condition. Cycle power to the controller. If condition continues, replace the EconoMi$er controller.

the thermostat is wired incorrectly. Check wiring between the thermostat and the connection board in the electrical panel. The fault condition is caused by Y2 being energized before Y1.

Hold CONFIG button between 3 and 10 seconds to verify the actuator’s operation. (This process takes 3 minutes to complete.)

to 100% to verify operation, and then set to correct setting. Set at correct value. See Table 4.

faulty. Check wiring or replace sensor.

position to be decreased. Refer to the Start-Up instructions. Verify correct setting of MIN POS (%). If correct, EconoMi$er is operating correctly.

minimum position, the ventilation control strategy is controlling. Refer to the Start-Up instructions. EconoMi$er is operating correctly.

Page 45

Table 30 — Durablade Economizer Troubleshooting

PROBLEM CAUSE REMEDY

Damper does not open.

Economizer operation limited to minimum position.

Damper does not close.

Economizer damper does not close on power loss.

C1 — EC — IFC — IFO —

Common Power Enthalpy Control Indoor (Evaporator) Fan Contactor Indoor (Evaporator) Fan On

Indoor (evaporator) fan is off. 1. Check to ensure that 24 vac is present at terminal C1 on the IFC or

No power to economizer motor. 1. Check that SW3 is properly making contact with the damper

Economizer motor failure. If the indoor (evaporator) fan and economizer motor are energized,

OAT or EC set too high. 1. Set at correct temperature (1.7 C [3 F] below indoor space

Verify economizer control board is correctly wired and works properly.

Check SAT. 1. After verifying that the OAT and EC settings and the economizer

Incorrect wiring of economizer. 1. Verify that SW2 and SW4 are wired and working properly (see unit

Verify economizer control board is functioning properly.

Check SAT. 1. After verifying that the wiring is correct and the economizer control

Economizer motor failure. If economizer control board and SAT are functioning properly, verify

Verify that close-on-power-loss and economizer control board are functioning properly.

LEGEND

OAT — PL — SAT — SW —

that 24 vac is present at the IFO terminal. Check whether 24 vac is present at PL6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is not present, check wiring (see unit label diagram).

2. Check proper thermostat connection to G on the connection board.

blade. Check that SW1 is in the NC (normally closed) position.

2. Check diode D1. If diode is not functioning properly, replace D1.

3. Confirm that the economizer control board is grounded properly at PL6-4 (brown wire) and at brown terminal of the economizer control board (brown wire). The economizer motor must also be grounded properly at the negative motor terminal (brown wire).

4. Verify SW1 and SW3 are working and wired properly (see unit label diagram).

5. Check for 24 vac input at both PL6-1 (red wire) and PL6-3 (black

wire). If 24 vac not present, check unit wiring (see unit label diagram). If 24 vac is found in both places, check for 24 vac at the yellow terminal of the economizer control board (yellow wire). If 24 vac power is not present, replace the economizer control board.

verify that there is a minimum of 18 vdc at the positive motor terminal. If the motor is not operating, replace the motor.

temperature).

2. Check OAT or EC by setting above outdoor temperature or humidity level. If the OAT or EC switches do not close, replace OAT or EC.

1. Perform the following tests when OAT or EC is closed, Y1 is called for and damper is at minimum position. Confirm 24 vac on gray ter-

minal of the economizer control board (gray wire). If 24 vac is not

present, check wiring (see unit label diagram).

2. Verify that SW1 and SW3 are wired correctly and working properly (see unit label diagram).

3. Check to ensure that 24 vac exists at PL6-2 (blue wire). If 24 vac is not present, check wiring (see unit wiring label diagram).

4. Check 24 vac output at PL6-10 (white wire). If 24 vac is not present, replace economizer control board.

control board wiring are correct, check to ensure that the 24 vac terminal of the SAT has 24 vac (white wire). If OAT, EC, and control board are functioning and wired properly and no 24 vac exists,

check wiring (see unit label diagram).

2. If supply-air temperature is greater than 14 C (57 F), 24 vac should be found at terminal T2 on the SAT (pink wire). If 24 vac is not present, replace SAT.

label diagram).

2. Check diode D2. If diode is not functioning properly, replace D2.

1. After verifying that the wiring is correct, modulate the damper to the

minimum position. Remove the call for G (evaporator fan).

2. If the damper does not move, check for 24 vac at PL6-1 (red wire). If 24 vac is not present, check wiring (see unit label diagram).

3. If damper still does not move, check for 24 vac at blue terminal of economizer control board (blue wire). If 24 vac is not present, replace the economizer circuit board.

board is functioning properly, place the OAT or EC switch in the closed position. Place a call for Y1 and open the damper to the fully open position. Confirm that the 24 vac terminal of the SAT has 24 vac (white wire). If 24 vac is not present, check wiring (see unit label diagram).

2. If supply-air temperature is less than 11 C (52 F), 24 vac should be found at terminal T1 on the SAT (violet wire). If 24 vac not found, replace SAT.

that there is a minimum of 18 vdc at the positive motor terminal. If a minimum if 18 vdc is present and the motor is still not operating, replace the motor.

1. Check voltage potential across batteries. If lower than 14 vdc, replace close-on-power-loss power supply (9-v alkaline batteries). It is recommended that you check this emergency power supply on a regular basis or whenever the filters are changed.

2. If the close-on-power-loss and economizer control board are functioning properly, check for 14 vdc or higher at the blue terminal of the economizer control board (blue wire) when power is discon-

nected from unit. If 14 vdc is not present, replace the control board.

Outdoor-Air Thermostat Plug Supply-Air Thermostat Economizer Position Switch

Page 46

AHA — BR — C — CAP — CB — CC — COMP — CR — D — EC — ECON — EPS —

EQUIP — ER — FPT — FSS — GND — GVR — HPS — HS — I — IDM — IFC — IFM — IGC — LPS — LS — MGV — MTR — OAT — OFM — P — PL — QT — R — RS — SAT — SEN — SW1 — SW2 — SW3 — SW4 — TC — TH — TRAN —

LEGEND

Adjustable Heat Anticipator Blower Relay Contactor, Compressor Capacitor Circuit Breaker Cooling Compensator Compressor Motor Combustion Relay Diode Enthalpy Control Economizer Emergency Power Supply (9-Volt Battery) Equipmen t Economizer Relay Freeze-Up Protection Thermostat Filter Status Sensor Ground Gas Valve Relay High-Pressure Switch Hall-Effect Sensor Ignitor Induced-Draft Motor Indoor-Fan Contactor Indoor Fan Motor Integrated Gas Unit Controller Low-Pressure Switch Limit Switch Main Gas Valve Motor Outdoor-Air Thermostat Outdoor-Fan Motor Plug Plug Assembly Quadruple Terminal Relay Rollout Switch Supply-Air Thermostat Sensor Switch Fully Open Switch Fully Closed Switch Min. Vent Position Switch Max. Vent Position Thermostat-Cooling Thermostat-Heating Transformer

Field Splice

Marked Wire

Ter minal (Marked)

Terminal (Unmarked)

Ter minal B lock

Splice

Splice (Marked)

Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To indicate common potential

only. Not to represent wiring.

NOTES:

1. If any of the original wire fur nished must be replaced, it must be replaced with Type 90 C wire or its equivalent.

2. Three-phase motors are protected under primary single phasing conditions. Thermostat: HH07AT170, 172, 174 and P272-2783 Subbase: HH93AZ176, 178 and P272-1882, 1883

3. Set heat anticipator for first stage at 0.14 amp, second stage at

0.2 amp, except for 008 low heat, set both first and second stage at

0.14 amp.

4. Use copper conductors only.

Fig. 55 — Typical Unit Wiring Schematic

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

Catalog No. 004-816 Printed in U.S.A. Form 48TF-C1SI Pg 46 1-01 Replaces: New

Page 47

Page 48

START-UP CHECKLIST

(Remove and Store in Job File)

I. PRELIMINARY INFORMATION

MODEL NO.:________________________________ SERIAL NO.: ___________________________________ DATE:______________________________________ TECHNICIAN: __________________________________

JOB LOCATION: _______________________________

II. PRE-START-UP (insert checkmark in box as each item is completed)



VERIFY THA T ALL PACKING MA TERIALS HAVE BEEN REMOVED FROM UNIT



REMOVE ALL SHIPPING HOLDDOWN BOL TS AND BRACKETS PER INSTALLATION INSTRUCTIONS



VERIFY THA T CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS



CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS



CHECK GAS PIPING FO R LEAKS



CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE



VERIFY THA T UNIT INSTALLA TION IS LEVEL



CHECK F AN WHEELS AND PROPELLERS FOR LOCA TION IN HOUSING/ORIFICE AND SETSCREW TIGHTNESS AND DRIVE BELTS TENSION.

III. START-UP

ELECTRICAL

SUPPL Y VOLTAGE L1-L2 L2-L3 L3-L1 COMPRESSOR AMPS L1 L2 L3 COMPRESSOR AMPS L1 L2 L3 INDOOR-FAN AMPS L1 L2 L3

TEMPERATURES

OUTDOOR-AIR TEMPERATURE DB RETURN-AIR TEMPERATURE DB

COOLING SUPPLY AIR DB GAS HEAT SUPPLY AIR DB

PRESSURES

GAS INLET PRESSURE kPa (IN. WG) GAS MANIFOLD PRESSURE kPa (IN. WG) (HI FIRE) REFRIGERANT SUCTI ON Pa (PSIG) — CIR CUI T NO . 1

Pa (PSIG) — CIRC UI T NO . 2

REFRIGERANT DISC HAR GE Pa (PSIG) — CIRCUI T NO . 1

Pa (PSIG) — CIRC UI T NO . 2

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE



VERIFY REFRIGERANT CHARGE USING CHARGING T ABLES



VERIFY THAT 3-PHASE SCROLL COMPRESSOR ROTATING IN CORRECT DIRECTION (014 ONLY)

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

Catalog No. 004-816 Printed in U.S.A. Form 48TF-C1SI Pg CL-1 1-01 Replaces: New

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Carrier 48TFD008-014, 48TFE008-014, 48TFF008-012 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual