Carrier 48TJD008-014, 48TJE008-014, 48TJF008-012 User Manual

Page 1
Single-Package Rooftop Heating/Cooling Units
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ...................1
INSTALLATION .............................1-22
Step 1 — Provide Unit Support ...............1
• ROOF CURB
• SLAB MOUNT
Step 3 — Install External Trap for
Condensate Drain ..........................2
Step 4 — Rig and Place Unit ..................2
• POSITIONING
Step 5 — Install Flue Hood ...................8
Step 6 — Install Gas Piping ...................8
Step 7 — Make Electrical Connections ........8
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
• HEAT ANTICIPATOR SETTINGS Step 8 — Adjust Factory-Installed Options ...11
• APOLLO CONTROL
• MANUAL OUTDOOR-AIR DAMPER
• OPTIONAL DURABLADE ECONOMIZER
• OPTIONAL PARABLADE ECONOMIZER
START-UP .................................23,24
SERVICE ..................................25-30
TROUBLESHOOTING ......................31-36
START-UP CHECKLIST .................... CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical com­ponents. Only trainedand 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 literature, tags and labels attached to the unit, and other safety precautions that may apply.
Follow all safety codes. Wearsafety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire ex­tinguishers available for all brazing operations.
48TJD008-014
48TJE008-014
48TJF008-012
Disconnect gas piping from unit when leak testing at pressure greater than1⁄2psig. Pres­sures greater than1⁄2psig will cause gas valve damage resulting in hazardous con­dition. If gas valve is subjected to pres­sure greater than1⁄2psig, it must be replaced before use. When pressure testing field­supplied gas piping at pressures of1⁄2psig or less, a unit connected to such piping must be isolated by manually closing the gas valve(s).
Before performing service or maintenance operations on unit, turn offmain power switch to unit. Electrical shock could cause personal injury.
INSTALLATION
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 insulation­side down. Seals around duct openings must be tight. See Fig. 1.
Step 1 — Provide Unit Support
ROOF CURB — Assemble and install accessory 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 is to be routed through the curb, attach the accessory thru-the-curb service connection plate to the roof curb in ac­cordance with the accessory installation instructions. Con­nection plate must be installed before unit is set in roof curb.
IMPORTANT: The gasketing of the 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 are 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.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4 Tab 1a 6a
PC 111 Catalog No. 564-934 Printed in U.S.A. Form 48TJ-13SI Pg 1 9-96 Replaces: 48TJ-10SI
Page 2
SLAB MOUNT (Horizontal Units Only) — Provide a level concrete slab that extends a minimum of 6 in. beyond unit cabinet. Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if required.
Step 2 — Field Fabricate Ductwork — Secure all
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
insulated and covered with a vapor barrier.
If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with ap­plicable fire codes.
A minimum clearance is not required around ductwork. Cabinet return-air static shall not exceed −.35 in. wg with Durablade or PARABLADE economizer or .45 in. wg with­out economizer.
These units are designed for a minimum continuous return­air temperature of 50 F (dry bulb), or an intermittent opera­tion down to 45 F (dry bulb), such as when used with a night set-back thermostat.
Step 3 — Install External Trap for Condensate Drain —
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 in the alternate bottom connection is tight before installing the unit.
To use the bottom drain connection for a roof curb in­stallation, relocate the factory-installed plug from the
The unit’s3⁄4-in. condensate drain connections
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 4-in. deep and protect against freeze­up. See Fig. 5. If drain line is installed downstream from the external trap, pitch the line away from the unit at 1 in. per 10 ft of run. Do not use a pipe size smaller than the unit connection.
Step4 — Rig and Place Unit — Inspect unit for trans-
portation 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 Table 1 and Fig. 6 for additional information. Operating weight is shown in Table 1 and Fig. 6.
Lifting holes are provided in base rails as shown in Fig. 6 and 7. Refer to rigging instructions on unit.
All panels must be in place when rigging.
POSITIONING — Maintain clearance around and above unit to provide minimum distance from combustible materials, proper airflow, and service access. See Fig. 7.
Do not install unit in an indoor location. Do not locate unit air inlets near exhaust vents or other sources of con­taminated air.
Be sure that unit is installed so that snow will not block the combustion intake or flue outlet.
Unit may be installed directly on wood flooring or on Class A, B, or C roof-covering material when roof curb is used.
Although unit is weatherproof, guard against water from higher level runoff and overhangs.
Position unit on roof curb so that the following clearances are maintained: rails on each side and front of unit; 15⁄32-in. clearance be­tween roof curb and rear of unit. (See Fig. 2, section C-C.)
1
⁄4-in. clearance between roof curb and base
Fig. 1 — Horizontal Conversion Panels
2
Page 3
UNIT SIZE
48TJ
008-014 28-8
‘‘B’’ ‘‘C’’ ‘‘D’’ALT DRAIN HOLE
7
⁄169 [827] 18-1015⁄169 [583] 13⁄49 [45]
‘‘E’’
GAS
3
⁄49 NPT3⁄49 NPT
3
⁄49 NPT 11⁄49 NPT
POWER
CONNECTION
CONTROL
CONNECTION
1
⁄29 NPT
1
⁄29 NPT
CONNECTOR
ACCESSORY
PACKAGE
CRBTMPWR00A100
(THRU-THE-BOTTOM)
CRBTMPWR00A200
(THRU-THE-BOTTOM)
UNIT SIZE
48TJ ACCESSORY
008-014
NOTES:
1. Roof curb accessory is shipped unassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: galvanized steel.
5. Attach ductwork to curb (flanges of duct rest on curb).
6. Service clearance 4 ft on each side.
‘‘A’’
18-29 [356] CRRFCURB003A00 28-09 [610] CRRFCURB004A00
ROOF CURB
7. Direction of airflow.
8. Either accessory connector package can be used with either roof curb.
Fig. 2 — Roof Curb Details
3
Page 4
MAXIMUM ALLOWABLE
DIFFERENCE (in.)
A-B B-C A-C
0.5 1.0 1.0
Fig. 3 — Unit Leveling Tolerances
NOTE: Drain plug is shown in factory-installed position.
Fig. 4 — Condensate Drain Pan
NOTE: Trap should be deep enough to offset maximum unit static difference. A 4-in. trap is recommended.
Fig. 5 — External Trap Condensate Drain
Locate mechanical draft system flue assembly at least 48 in. from any opening through which combustion prod­ucts could enter the building, and at least 48 in. from an ad­jacent building or combustible material. When unit is located adjacent to public walkways, flue assembly must be at least 7 ft above grade.
Flue vent discharge must have a minimum horizontal clear­ance of 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) Z223.1-latest year and addendum Z223.1A-latest year. In Canada, installation must be in accordance with the CAN1. B149.1 and CAN1.B149.2 installation codes for gas burning appliances.
NOTES:
1. Dimension in ( ) is in millimeters.
2. Hook rigging shackles through holes in base rail as shown in detail ‘‘A.’’ Holesinbase rails arecentered around theunit center ofgravity. Usewooden top skid when rigging to prevent rigging straps from damaging unit.
3. Weights include base unit without economizer. See Table1 for economizer weights.
All panels must be in place when rigging.
Fig. 6 — Rigging Details
MAX
UNIT
48TJD/TJE/TJF008 870 395 87.38 2219 40.25 1022 41.31 1050 48TJD/TJE/TJF009 880 399 87.38 2219 40.25 1022 41.31 1050 48TJD/TJE/TJF012 1035 469 87.38 2219 40.25 1022 49.31 1253
48TJD/TJE014 1050 476 87.38 2219 40.25 1022 49.31 1253
WEIGHT
lb kg in. mm in. mm in. mm
‘‘A’’ ‘‘B’’ ‘‘C’’
DIMENSIONS
4
Page 5
Table 1 — Physical Data
UNIT SIZE 48TJ 008D/E/F 009D/E/F 012D/E/F 014D/E NOMINAL CAPACITY (tons) 7 OPERATING WEIGHT (lb)
Unit
Al/Al* 870 880 1035 1050 Al/Cu* 881 896 1057 1077
Cu/Cu* 893 907 1080 1100 Durablade Economizer 44 44 44 44 PARBLADE Economizer 62 62 62 62 Roof Curb 143 143 143 143
COMPRESSOR Reciprocating Scroll
Quantity 2222 Oil (oz) 50 ea 50 ea 50 ea 54 ea
REFRIGERANT TYPE R-22
Operating Charge (lb-oz)
Circuit 1 4-13 6-14 5-13 8-10
Circuit 2 4-14 6-3 5-14 8- 6
CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in. 1...17 2...17 2...17 2...17 Total Face Area (sq ft) 20.50 18.00 17.42 25.00
CONDENSER FAN Propeller Type
Nominal Cfm 6500 6500 7000 7000 Quantity...Diameter (in.) 2...22 2...22 2...22 2...22 Motor Hp...Rpm Watts Input (Total) 600 600 600 600
EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Feed Device
Rows...Fins/in. 3...15 3...15 3...15 4...15 Total Face Area (sq ft) 8.0 8.0 10.0 11.1
EVAPORATOR FAN Centrifugal Type
Quantity...Size (in.) Std 1...15 x 15 1...15 x 15 1...15 x 15 1...15 x 15 Type Drive Std Belt Belt Belt Belt Nominal Cfm 3000 3400 4000 5000
Motor Hp Std ———— Maximum Continuous Bhp Std 2.40 2.40 2.40 4.20 Motor Frame Size Std 56 56 56 56 Nominal Rpm High/Low ————
Fan Rpm Range Std 590-840 685-935 685-935 860-1080 Motor Bearing Type Ball Ball Ball Ball
Maximum Allowable Rpm 2100 2100 2100 2100 Motor Pulley Pitch Diameter Min/Max (in.) Std 2.4/3.4 2.8/3.8 2.8/3.8 4.0/5.0
Nominal Motor Shaft Diameter (in.) Std Fan Pulley Pitch Diameter (in.) Std 7.0 7.0 7.0 8.0 Nominal Fan Shaft Diameter (in.) ————
Belt, Quantity...Type...Length (in.) Std 1...A...48 1...A...48 1...A...51 1...A...51 Pulley Center Line Distance (in.) Std 16.75-19.25 16.75-19.25 15.85-17.50 15.85-17.50 Speed Change per Full Turn of Std 50 50 50 44
Movable Pulley Flange (rpm) Alt 50—5050
Movable Pulley Maximum Full Turns Std 5555
From Closed Position Alt 5—56
Factory Setting Std 5555 Factory Speed Setting (rpm) Std 590 685 685 860 Fan Shaft Diameter at Pulley (in.) 1111
Alt 1...15 x 15 1...15 x 15 1...15 x 15 Alt Belt Belt Belt
Alt ———— Alt 2.90 5.25 Alt 56 56
Alt 685-935 835-1085 900-1260
Alt 2.8/3.8 3.4/4.4 3.1/4.1 Alt —— Alt 7.0 7.0 5.9
Alt 1...A...51 1...A...57 1...BX...46 Alt 16.75-19.25 15.85-17.50 15.85-17.50
Alt 5—56 Alt 685 835 960
1
1
⁄4...1100
5
8
2
81⁄
1
⁄4...1100
5
8
2
10 121⁄
1
⁄4...1100
5
8
7
8
2
1
⁄4...1100
7
8
7
8
(See legend and notes on page 6.)
5
Page 6
Table 1 — Physical Data (cont)
UNIT SIZE 48TJ 008D/E/F 009D/E/F 012D/E/F 014D/E FURNACE SECTION
Rollout Switch Cutout Temp (F) 195 195 195 195 Burner Orifice Diameter
(in. ...drill size)
Natural Gas Std .120...31 .120...31 .120...31/.120...31/.129...30 .120...31/.129...30 Liquid Propane Alt .096...41 .096...41 .096...41/.096...41/.102...38 .096...41/.102...38
Pilot Orifice Diameter
(Quantity) in. ...drill size
Natural Gas Std —— —— Liquid Propane Alt —— ——
Thermostat Heat Anticipator Setting (amps)
208/230 v Stage 1 .14 .14 .14 .14 460 v Stage 1 .14 .14 .14 .14
Gas Input (Btuh) Stage 1 125,000/120,000/180,000 125,000/120,000/180,000 120,000/180,000/200,000 180,000/200,000 Efficiency (Steady
State) (%) 80 80 80 80
Temperature Rise Range 20-50/35-65/45-75 20-50/35-65/45-75 35-65/35-65/40-70 35-65/40-70 Manifold Pressure (in. wg)
Natural Gas Std 3.5 3.5 3.5 3.5 Liquid Propane Alt 3.5 3.5 3.5 3.5
Gas Valve Quantity 11 11 Field Gas Connection
Size (in.)
HIGH-PRESSURE SWITCH (psig)†
Standard Compressor
Internal Relief (Differential)
Cutout 428 428 Reset (Auto.) 320 320
LOW-PRESSURE SWITCH (psig)†
Cutout 7±3 Reset (Auto.) 22±7
FREEZE PROTECTION
THERMOSTAT (F)†
Opens 30±5 Closes 45±5
OUTDOOR-AIR INLET SCREENS Cleanable
Quantity...Size (in.) 1...20 x 25 x 1
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 4...16 x 20 x 2 4...16 x 20 x 2 4...20 x 20 x 2 4...20 x 20 x 2
Al Aluminum Bhp — Brake Horsepower Cu Copper
Stage 2 .20 .20 .20 .20
Stage 2 .20 .20 .20 .20
Stage 2 —/180,000/224,000 —/180,000/224,000 180,000/224,000/250,000 224,000/250,000
1
⁄2/3⁄4/3⁄
4
1
⁄2/3⁄4/3⁄
4
3
⁄4/3⁄4/3⁄
4
450±50 500±50
1...16 x 25 x 1
LEGEND
*Evaporator coil fin material/condenser coil fin material.
†Requires an optional or accessory controls kit. NOTE: The 48TJ008-014 units have a loss-of-charge/low-pressure
switch (accessory) located in the liquid line.
3
⁄4/3⁄
4
6
Page 7
STANDARD
UNIT
WEIGHT
48TJ
Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg ft-in. mm ft-in. mm ft-in. mm ft-in. mm
UNIT
CORNER
WEIGHT
(A)
CORNER
WEIGHT
(B)
CORNER
WEIGHT
(C)
CORNER
WEIGHT
(D)
D/E/F008 870 395 189 86 161 73 239 109 280 127 1-2 D/E/F009 880 399 191 87 163 74 242 110 284 129 3-3 D/E/F012 1035 469 225 102 192 87 285 129 333 151 2-5 D/E014 1050 476 228 103 195 88 289 131 338 153 1-2
‘‘H’’ ‘‘J’’ ‘‘K’’ ‘‘L’’
7
⁄8378 3-55⁄161050 2-911⁄16856 2- 27⁄16672
7
⁄81013 3-55⁄161050 2-911⁄16856 2- 27⁄16672
7
⁄8759 4-15⁄161253 3-03⁄8924 2-107⁄16875
7
⁄8378 4-15⁄161253 3-03⁄8924 2-107⁄16875
NOTES:
1. Dimensions in [ ] are in millimeters.
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 shouldbe attachedto horizontaldis­charge openings, and all ductwork should be attached to the flanges.
5. Minimum clearance (local codes or jurisdiction may prevail): a. Between unit (flue side) and combustible surfaces, 48 inches. b. Bottom of unit to combustible surfaces (when not using curb) 1 inch.
Bottom of base rail to combustible surfaces (when not using curb) 0 inches.
c. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The side get-
ting the greater clearance is optional. d. Overhead, 60 in. to assure proper condenser fan operation. e. Between units, control box side, 42 in. per NEC (National Electrical Code). f. Between unit and ungrounded surfaces, control box side, 36 in. per NEC. g. Between unit and block or concrete walls and other grounded surfaces, control
box side, 42 in. per NEC. h. Horizontal supply and return end, 0 inches.
6. With the exception of the clearance for the condenser coil and combustion side as stated in Notes 5a, b, and c, a removable fence or barricade requires no clearance.
7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering material if set on base rail.
8. The vertical center of gravity is 18-79 [483] up from the bottom of the base rail. Hori­zontal center of gravity is shown.
CONNECTION SIZES
3
⁄89 Dia [35] Field Power Supply Hole
A 1
1
⁄29 Dia [64] Power Supply Knock-Out
B 2-
3
⁄49 Dia [44] Charging Port Hole
C 1
7
⁄89 Dia [22] Field Control Wiring Hole
D
3
⁄49—14 NPT Condensate Drain
E
1
⁄29—14 NPT Gas Connection 48TJD008 & 009
3
⁄49—14 NPT Gas Connection 48TJE/F008 & 009;
F
48TJD/E012,014, 48TJF012
G 29 Dia [51] Power Supply Knock-Out
BOTTOM POWER CHART, THESE HOLES REQUIRED FOR USE WITH ACCESSORY
PACKAGES — CRBTMPWR001A00,
OR CRBTMPWR002A00
THREADED
CONDUIT SIZE
1
⁄2( 24 V
3
⁄4( Power* 11⁄89 [28.4]
11⁄4( Power* 13⁄49 [44.4]
*Select either
WIRE SIZE
3
⁄49 or 11⁄49 for power, depending on wire size.
REQUIRED HOLE
SIZES (MAX)
7
⁄89 [22.2]
Fig. 7 — Base Unit Dimensions
7
Page 8
Step 5 — Install Flue Hood — Flue hood is shipped
screwed to the burner compartment access panel. Remove from shipping location and, using screws provided, install flue hood and screen in location shown in Fig. 8.
Step 6 — Install Gas Piping — Unit is equipped for
use with type of gas shown on nameplate. Refer to local build­ing codes, or in the absence of local codes, to ANSI Z223.1­latest year and addendum Z223.1A-latest year entitled National Fuel Gas Code. In Canada, installation must be in accordance with the CAN1.B149.1 and CAN1.B149.2 in­stallation codes for gas burning appliances.
For natural gas applications, gas pressure at unit gas con­nection must not be less than 4.0 in. wg (5.0 in. wg in high heat units) or greater than 13.0 in. wg while unit is operat­ing. For liquid propane applications, the gas pressure must not be less than 5.0 in. wg or greater than 13.0 in. wg at the unit connection.
Size gas supply piping for 0.5 in. wg maximum pres­sure drop. Do not use supply pipe smaller than unit gas connection.
Support gas piping as shown in the table in Fig. 9. For example, a
3
⁄4-in. gas pipe must have one field-fabricated sup­port beam every 8 ft. Therefore, an 18-ft long gas pipe would have a minimum of 2 support beams, and a 48-ft long pipe would have a minimum of 6 support beams.
See Fig. 9 for typical pipe guide and locations of external
manual gas shutoff valve.
Step 7 — Make Electrical Connections
Unit cabinet must have an uninterrupted, unbroken elec­trical ground to minimize the possibility of personal in­jury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for elec­trical ground when installed in accordance with NEC (National Electrical Code), ANSI/NFPA (National Fire Protection Association), latest edition, and local elec­trical 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.
Fig. 8 — Flue Hood Details
LEGEND
NFGC — National Fuel Gas Code *Field supplied.
NOTE: Follow all local codes.
SPACING OF SUPPORTS
STEEL PIPE
NOMINAL
DIAMETER
(in.)
1
2
3
⁄4or 1 8
1
⁄4or larger 10
1
X
DIMENSION
(feet)
6
Fig. 9 — Gas Piping Guide (With Accessory
Thru-the-Curb Service Connections)
FIELD POWER SUPPLY— All units except 208/230-v units are factory wired for the voltage shown on the nameplate. If the 208/230-v unit is to be connected to a 208-v power sup­ply, the transformer must be rewired by moving the black wire from the 230-v red wire on the transformer and con­necting it to the 200-v blue wire from the transformer. The red wire then must be insulated.
Refer to unit label diagram for additional information. Pig-
tails are provided for field service.
When installing units, provide a disconnect per NEC. Use
copper conductors only when splice connectors are used.
All field wiring must comply with NEC and local require­ments. In Canada, electrical connections must be in accor­dance with CSA (Canadian Standards Association) C22.1 Canadian Electrical Code Part One.
Install conduit through side panel openings indicated in Fig. 7. Route power lines through connector to terminal con­nections as shown in Fig. 10.
On 3-phase units, 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. 7 for drilling holes in basepan.
FIELD CONTROL WIRING — Install a Carrier-approved accessory thermostat assembly according to installation in­structions included with the accessory. Locate thermostat as­sembly on a solid wall in the conditioned space to sense av­erage temperature in accordance with thermostat installation instructions.
NOTE: For wire runs up to 50 ft, use no. 18 AWG (Ameri­can Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft, use no. 16 AWG insulated wire (35 C minimum). For over 75 ft, use no. 14 AWGinsulated 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.
8
Page 9
Route thermostat cable or equivalent single leads of col­ored wire from subbase terminals to low-voltage connec­tions on unit (shown in Fig. 11) as described in Steps1-4 below.
1. If unit is mounted on roof curb and accessory thru-the-
curb 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. 7).
3. Feed wires through the raceway built into the corner post
to the 24-v barrier located on the left side of the control
Table 2 — Electrical Data
box. See Fig. 12. The raceway provides the UL-required (Underwriters’Laboratories) clearance between high- and 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.
UNIT 48TJ
008
1
(7
⁄2Tons)
009
1
(8
⁄2Tons)
012
(10 Tons)
014
1
(12
⁄2Tons)
NOMINAL VOLTAGE
(60 Hz)
208/230
(3 phase)
460
(3 phase)
575
(3 phase)
208/230
(3 phase)
460
(3 phase)
575
(3 phase)
208/230
(3 phase)
460
(3 phase)
575
(3 phase)
208/230
(3 phase)
460
(3 phase)
575
(3 phase)
VOLTAGE
IFM
TYPE
RANGE
Min Max RLA LRA Hp FLA FLA FLA MCA MOCP† FLA LRA
Std 187 254 13.6 73.4 Std 414 508 6.2 37.7 Std 518 632 4.9 31.0 Std 187 254 15.8 92.0 Std 414 508 7.4 46.0 Std 518 632 5.9 44.0
Std
187 254 17.9 110.0
Alt 7.5 50.6/50.6 60/60 53/53 286/286
Std
414 508 8.6 55.0
Alt 3.4 24.2 30 25 173
Std
518 632 6.4 44.0
Alt 3.4 18.2 20 19 139
Std
187 254 23.0 146.0
Alt 15.0 69.6/69.6 80/80 73/73 406/406
Std
414 508 10.4 73.0
Alt 7.4 32.2 35 34 203
Std
518 632 8.3 58.4
Alt 7.4 25.7 35 27 163
COMPR
(ea)
LEGEND
FLA Full Load Amps HACR — Heating, Air Conditioning and Refrigeration IFM Indoor (Evaporator) Fan Motor LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP — Maximum Overcurrent Protection NEC National Electrical Code OFM Outdoor (Condenser) Fan Motor RLA Rated Load Amps UL Underwriters’ Laboratories
*Used to determine minimum disconnect size per NEC.
†Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements 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. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply volt­age is greater than 2%.
the percent voltage imbalance.
Use the following formula to determine
% Voltage Imbalance = 100 x
max voltage deviation from average voltage
average voltage
OFM
(ea)
1
⁄41.4 5.8 .57 39.2/39.2 45/45 41/41 194/194
1
⁄40.8 2.6 .30 18.0 25 19 99
1
⁄40.8 2.6 .30 14.2 20 15 81
1
⁄41.4 5.8 .57 44.2/44.2 50/50 46/46 231/231
1
⁄40.8 2.6 .30 20.7 25 22 116
1
⁄40.8 2.6 .30 16.5 20 17 107
1
⁄41.4
1
⁄40.8
1
⁄40.8
1
⁄41.4
1
⁄40.8
1
⁄40.8
IFM
5.8
2.6
2.6
10.6
4.8
4.8
COMBUSTION
FAN MOTOR
.57
.30
.30
.57
.30
.30
POWER SUPPLY
DISCONNECT
SIZE*
48.9/48.9 60/60 51/51 267/267
23.4 30 24 134
17.6 20 18 107
65.2/65.2 80/80 68/68 383/383
29.6 35 31 192
23.6 30 25 154
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v BC = 464 v AC = 455 v
Average Voltage =
452 + 464 + 455
3
1371
=
3
= 457 NOTE: The 575-v 48TJ008-014 units are UL, Canada, only. Determine maximum deviation from average voltage.
(AB) 457 - 452=5v (BC) 464 - 457=7v (AC) 457 - 455=2v
Maximum deviation is 7 v. Determine percent voltage imbalance.
% Voltage Imbalance = 100 x
7
457
= 1.53%
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.
9
Page 10
Fig. 10 — Power Wiring Connections
LEGEND
C—Contactor COMPS — Compressors IFC Indoor (Evaporator) Fan
NEC National Electrical Code TB Terminal Block
Contactor
Terminal Block Connection Splice Connection
(Factory Supplied) Field Wiring Factory Wiring
LEGEND
AHA — Adjustable Heat Anticipator CC Cooling Compensator TC Thermostat-Cooling TH Thermostat-Heating
Field Wiring Factory Wiring
Fig. 11 — Low-Voltage Connections
UNIT CONNECTION BOARD
RACEWAY
INTEGRATED GAS UNIT CONTROLLER (IGC)
Fig. 12 — Field Control Wiring Raceway
10
Page 11
Step 8 — Adjust Factory-Installed Options
APOLLO CONTROL — The optionalApollo 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 VVTt 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. 13 for Apollo location.
MANUAL OUTDOOR-AIR DAMPER — The outdoor-air hood and screen are attached to the basepan 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 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 the filter access panel. Remove outdoor-air opening panel. Save panels and screws. See Fig. 14.
3. Separate hood and screen from basepan by removing the screws and brackets securing them. Save all screws and discard brackets.
4. Replace outdoor air opening panel with screws saved from Step 2.
5. Place hood on front of outdoor-air opening panel. See Fig. 15 for hood details. Secure top of hood with the 6 screws removed in Step 3. See Fig. 16.
6. Remove and save 8 screws (4 on each side) from sides of the manual outdoor-air damper.
7. Align screw holes on hood with screw holes on side of manual outdoor-air damper. See Fig. 15 and 16. Secure hood with 8 screws from Step 6.
8. Adjust minimum position setting of the damper blade by adjusting the manual outdoor-air adjustment screws on the front of the damper blade. See Fig. 14. Slide blade vertically until it is in the appropriate position deter­mined by Fig. 17. Tighten screws.
OUTDOOR AIR OPENING PANEL
Fig. 14 — Damper Panel with Manual
Outdoor-Air Damper Installed
WIRING TO THERMOST AT
APOLLO CONTROL
CONTROL WIRING
Fig. 13 — Apollo Control Factory-Installed
in Typical Unit
Fig. 15 — Outdoor-Air Hood Details
HOOD
NOT SHOWN)
Fig. 16 — Damper with Hood Attached
11
Page 12
Fig. 17 — Position Setting
9. Remove and save screws currently on sides of hood. Insert screens. Secure screens to hood using the screws. See Fig. 16.
10. Replace filter access panel. Ensure filter access panel slides along the tracks and is securely engaged.
OPTIONAL DURABLADE ECONOMIZER — The op­tional economizer hood assembly is packaged and shipped in the filter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical discharge position.
NOTE: Horizontal discharge block-off plate is shipped with the air hood package. If unit is to be used for vertical dis­charge application, discard this plate.
Assembly
1. Determine if ventilation air is required in building. If so, determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 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. 18. Remove optional economizer and outdoor-air damper hood package from filter section.
3. Assemble outdoor-air hood top and side plates as shown in Fig. 19. 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 discharge block­off plate over duct openings. See Fig. 20.
5. Slide economizer into unit and secure with screws. See Fig. 21.
NOTE: Be sure to engage rear economizer flange under tabs in vertical return-air opening.
6. To convert to horizontal discharge application: a. Rotate the economizer 90 degrees until the econo-
mizer motor faces the condenser section (see Fig. 22).
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. 23.
7. Insert economizer plug into economizer harness. Re­move tape from barometric relief damper. See Fig. 21.
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 Fig. 24. Adjust minimum position setting by adjusting the screws on the position setting bracket. See Fig. 25. Slide bracket until the top screw is in the position determined by Fig. 24. Tighten screws.
9. Remove tape from outdoor-air thermostat (OAT). Fas­ten OAT to inside of hood using screws and speed clips provided. See Fig. 26. Make sure OAT terminals are po­sitioned up.
10. Replace outdoor-air opening panel using screws from Step 2. Replace filter access panel. Ensure the filter ac­cess 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. 26. Set for 3° F below indoor room thermostat set­ting. If accessory enthalpy control (EC) is used in place of OAT, see instructions shipped with EC for installa­tion and adjustment. See Fig. 26.
13. Connect OAT per Fig. 27.
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. 28 for Durablade economizer baromet­ric relief damper characteristics.
12
OUTDOOR-AIR OPENING PANEL
Fig. 18 — Access Panel Locations
FILTER ACCESS PANEL
Page 13
ECONOMIZER CONTROL BOARD
ECONOMIZER PLUG
ECONOMIZER MOTOR
TOP SCREW
Fig. 21 — Durablade Economizer Installed in Unit
Fig. 19 — Outdoor-Air Hood Details
Fig. 20 — Vertical Discharge Block-Off Plate
(Sizes 120,150 only)
ECONOMIZER CONTROL BOARD
POSITION SETTING BRACKET
ECONOMIZER MOTOR
Fig. 22 — Horizontal Durablade Economizer
Installation (90 Degree Rotation)
13
BLOCK-OFF PLATE
Fig. 23 — Horizontal Discharge Block-Off Plate
Page 14
Example:
Given —
Negative Pressure .......................0.1in.wg
Outdoor Airflow ........................1100cfm
Determine —
Setting = 69
Fig. 24 — Durablade Economizer Damper
Minimum Position Setting
9
8
7
6
5
4
3
2
1
0
Fig. 25 — Durablade Economizer Minimum
Position Damper Setting
14
REV. B
CONTACTS SHOWN IN HIGH ENTHALPY
OR UNPOWERED STATE
B
198818A
C
TR
D
S
S
O
5
ENTHALPY
3
TR
24VAC
2
CONTROL
TR1
1
MINIMUM
POSITION
OPEN
1
3
T
P
2
T1
4
P1
CONTACT RATINGS: 1.5A RUN, 3.5A IN
RUSH AT 24VAC
%
H
U
M
I
D
I
T
Y
90
70
60
30
10
CW–SETPOINTS–CCW
D
50
DAMPER
C
OUTDOOR TEMP.
OPEN
55
B A
60
°F
3 mA MIN. AT 11 VDC
65 70
DAMPER
CLOSED
75 80
85
97-3672
REV.
Fig. 26 — Outdoor-Air Thermostat/
Enthalpy Control Installation
Fig. 27 — Wiring Connections for
Outdoor-Air Thermostat
Page 15
Fig. 28 — Durablade Economizer Barometric Relief
Damper Characteristics
OPTIONAL PARABLADE ECONOMIZER — The op­tional PARABLADE economizer hood assembly is pack­aged and shipped in the filter section. Damper blades and control boards are installed at the factory and the econo­mizer is shipped in the vertical discharge position.
NOTE: Horizontal discharge block-off plate is shipped with the air hood package. The PARABLADE economizer can only be used for vertical discharge applications. Discard this plate.
Assembly
1. Determine if ventilation air is required in building. If so, determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 7.
2. Remove filter access panel by raising panel and swing­ing panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove filter access panel. Remove outdoor-air opening panel. See Fig. 18. Save panels and screws. Remove optional economizer so the outdoor-air damper hood package can be removed from the filter section.
3. Assemble outdoor-air hood top and side plates as shown in Fig. 19. 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 discharge block­off plate over duct openings. See Fig. 20.
5. Slide economizer into unit and secure with screws. See Fig. 29.
NOTE: Be sure to engage rear economizer flange under tabs in vertical return-air opening.
6. Insert economizer plug into economizer harness. Re­move tape from barometric relief damper. See Fig. 29.
7. If ventilation air is not required, proceed to Step 8. If ventilation air is required, perform the following:
a. Make sure the factory-installed jumper is in place across
terminals P and P1 on the economizer logic module. T and T1 should be disconnected during adjustment.
b. The 2 potentiometers with slots for adjustment are
located on the face of the economizer logic module. Turn the lower potentiometer fully clockwise. The
dampers should be fully closed. Turn the potentiom­eter gradually counterclockwise until the desired po-
sition is reached. c. Connect T and T1 to the 24 v power supply. d. After installation is complete, calculate the mini-
mum airflow across the economizer. To calculate the
minimum airflow, the following data is needed: total
cfm (cfm
perature of the return air (T1), and temperature of the
), temperature of the total cfm (T3), tem-
3
entering outside air (T2). Cfm1is the return air cfm,
which will be the minimum airflow.
Insert the data into the following equations:
(cfm1)+T2(cfm2)
T
1
cfm
3
=T
3
cfm2= (cfm3– cfm1)
Therefore:
(cfm1)+T2(cfm3– cfm1)
T
1
cfm
3
=T
3
Use this equation to determine cfm1, which is the mini-
mum airflow across the economizer.
cfm1=
(T
If cfm
from Step 1, re-adjust the minimum position setting
does not match the desired minimum airflow
1
3–T2
(T
1–T2
) cfm
)
3
screw.
8. Determine the enthalpy changeover set point from Fig. 30. The enthalpy changeover set point should be set to return the outdoor air damper to the minimum po­sition when enthalpy rises above the set point. The set­tings are A, B, C, and D. Set the enthalpy changeover per the setting in Fig. 30.
9. Replace outdoor-air opening panel using screws from Step 2. Replace filter access panel. Ensure the filter ac­cess panel slides along the tracks and is securely en­gaged. See Fig. 31.
10. Fasten hood top and side plate assembly (Fig. 32) to outdoor-air opening panel with screws provided.
11. Slide outdoor-air inlet screens into screen track on hood side plate. While holding screens in place, fasten screen­retainer to hood using screws provided. See Fig. 33.
ECONOMIZER CONTROL MODULE/DAMPER ACTUATOR
WIRING HARNESS
ENTHALPY SENSOR
BAROMETRIC RELIEF DAMPER
Fig. 29 — PARABLADEEconomizer Installed in Unit
15
Page 16
CONTROL
CURVE
RH — Relative Humidity
CONTROL POINT
F (C) (APPROX)
A 73 [23] B 70 [21] C 67 [19] D 63 [17]
AT 50% RH
Fig. 30 — Enthalpy Settings for
PARABLADE Economizer
Fig. 31 — Panels Reinstalled on Unit
Fig. 33 — Filter Installed on Outdoor-Air Hood
Step 9 — Adjust Evaporator-Fan Speed — Ad-
just evaporator-fan speed to meet jobsite conditions.
Table 3 shows fan rpm at motor pulley settings, Table 4 shows motor efficiencies and Table 5 gives accessory static pressure drops. Table 6 shows motor performance. Refer to Tables 7-14 to determine fan speed settings. Fan motor pul­leys are factory set for speed shown in Table 1.
To change fan speed:
1. Shut off unit power supply.
2. Loosen belt by loosening fan motor mounting plate nuts
(see Fig. 34 and 35).
3. Loosen movable pulley flange setscrew (see Fig. 36).
4. Screw movable flange toward fixed flange to increase speed
and away from fixed flange to decrease speed. Increasing fan speed increases load on motor. Do not exceed maxi­mum speed specified in Table 1.
5. Set movable flange at nearest keyway of pulley hub and
tighten setscrew (see Table 1 for speed change for each full turn of pulley flange).
To 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 mount-
ing plate.
To adjust belt tension (see Fig. 34 and 35):
1. Loosen fan motor mounting plate nuts.
2. Units 008,009 — Slide motor mounting plate away from
fan scroll for proper belt tension ( one finger) and tighten mounting nuts (see Fig. 34).
Units 012,014 — Slide motor mounting plate downward to tighten belt tension. Secure motor mounting plate nuts. See Fig. 35.
3. Adjust bolt and nut on mounting plate to secure motor in
fixed position.
1
⁄2-in. deflection with
Fig. 32 — Outdoor-Air Hood Installed on Unit
16
Page 17
MOTOR MOUNTING PLATE NUTS
Fig. 34 — Typical Belt-Drive Motor Mounting
for Sizes 008,009
Fig. 35 — Typical Belt-Drive Motor Mounting
for Sizes 012,014
Fig. 36 — Evaporator-Fan Pulley Adjustment
Table 3 — Fan Rpm at Motor Pulley Settings*
UNIT 48TJ
0
1
2
11
1
2
008† 840 815 790 765 740 715 690 665 640 615 590 008** 935 910 885 860 835 810 785 760 735 710 685 009† 935 910 885 860 835 810 785 760 735 710 685 012† 935 910 885 860 835 810 785 760 735 710 685 012†† 1085 1060 1035 1010 985 960 935 910 885 860 835 014† 1080 1060 1035 1015 990 970 950 925 905 880 860 014†† 1260 1220 1185 1155 1130 1100 1075 1045 1015 990 960 930 900
*Approximate rpm shown.
†Indicates standard motor and drive.
**Indicates alternate drive.
††Indicates alternate motor and drive.
MOTOR PULLEY TURNS OPEN
22
1
2
33
1
2
44
1
⁄255
1
⁄26
17
Page 18
Table 4 — Evaporator-Fan Motor Efficiency
MOTOR EFFICIENCY (%)
48TJD/TJE/TJF008,009 80 48TJD/TJE/TJF012 (Std) 80 48TJD/TJE/TJF012 (Alt) 83 48TJD/TJE014 (Std) 85 48TJD/TJE014 (Alt) 87
NOTE: Convert watts to bhp using the following formula:
watts input x motor efficiency
bhp =
746
Table 5 — Economizer Static Pressure Drop (in. wg)
UNIT 48TJ
Durablade Economizer .02 .02 .03 .04 .05 .06 .07 .08 .09
PARABLADE Economizer .21.25.35.49.61————
2200 2500 3000 3500 4000 4500 5000 5500 6000
CFM
Table 6 — Motor Data
UNIT
48TJ
008 Std 2.40 2120
009 Std 2.40 2120
012
014
LEGEND
Bhp — Brake Horsepower *Extensive motor and electrical testing on these units ensures that the full horsepower and watts 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.
EVAPORATOR-
FAN MOTOR
Std 2.40 2120
Alt 2.90 2615
Std 4.20 3775
Alt 5.25 4400
MAXIMUM
CONTINUOUS
BHP*
MAXIMUM
OPERATING
WATTS*
UNIT
VOLTAGE
208/230 6.1
460 2.7 575 2.7
208/230 6.1
460 2.7 575 2.7
208/230 6.1
460 2.7 575 2.7
208/230 7.9
460 3.6 575 3.6
208/230 11.1
460 5.0 575 5.0
208/230 15.0
460 7.4 575 7.4
MAXIMUM
AMP DRAW
18
Page 19
Table 7 — Fan Performance, 48TJ008 — Vertical Discharge Units
AIRFLOW
(Cfm)
2200 506 0.52 586 0.72 656 0.95 718 1.18 776 1.43 838 1.78 898 2.21 935 2.58 2250 514 0.55 593 0.76 662 0.99 724 1.22 781 1.78 841 1.81 902 2.25 939 2.60 2300 521 0.57 600 0.79 668 1.02 730 1.26 786 1.50 843 1.83 905 2.28 943 2.62 2400 536 0.63 613 0.85 680 1.09 741 1.34 796 1.59 849 1.88 910 2.31 952 2.74 2500 551 0.69 626 0.93 693 1.17 753 1.43 808 1.69 859 1.96 912 2.31 963 2.81 2550 559 0.72 634 0.97 700 1.21 759 1.48 814 1.74 864 2.01 915 2.34 968 2.81 2600 567 0.75 641 1.00 706 1.25 764 1.52 819 1.79 869 2.06 918 2.37 973 2.81 2700 582 0.83 655 1.08 719 1.34 776 1.61 831 1.89 880 2.17 927 2.47 976 2.84 2800 598 0.90 670 1.17 732 1.43 789 1.71 842 2.00 892 2.29 938 2.58 983 2.92 2900 614 0.98 684 1.25 745 1.53 802 1.81 854 2.11 903 2.42 949 2.71 993 3.03 3000 630 1.07 699 1.35 759 1.63 815 1.92 866 2.23 915 2.54 961 2.85 1003 3.17 3100 646 1.16 714 1.45 773 1.74 828 2.04 878 2.35 926 2.67 972 3.00 1015 3.32 3200 662 1.26 729 1.55 787 1.86 841 2.16 891 2.48 938 2.81 983 3.14 1026 3.47 3300 679 1.36 744 1.66 801 1.98 854 2.29 904 2.61 950 2.95 995 3.30 3400 695 1.47 759 1.78 816 2.10 867 2.42 917 2.75 963 3.10 1007 3.45 3500 712 1.59 774 1.90 830 2.23 881 2.56 930 2.90 976 3.25 ———— 3600 729 1.71 790 2.03 845 2.37 895 2.71 943 3.05 988 3.41 ———— 3700 745 1.84 805 2.17 860 2.52 909 2.87 956 3.22 ————— 3750 754 1.91 813 2.24 868 2.59 917 2.95 963 3.30 —————
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 4.)
2. indicates alternate drive required.
3. indicates field-supplied motor and drive required.
4. Standard drive range is 590 to 840 rpm. Alternate drive range is 685 to 935 rpm. All other rpms require a field-supplied drive.
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
LEGEND
EXTERNAL STATIC PRESSURE (in. wg)
5. Values include losses for filters, unit casing, and wet coils.
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 your fan motors up to the rat­ings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.
8. Interpolation is permissible. Do not extrapolate.
Table 8 — Fan Performance, 48TJ009 — Vertical Discharge Units
AIRFLOW
(Cfm)
2550 559 0.72 634 0.97 700 1.21 759 1.48 814 1.74 864 2.01 915 2.34 968 2.81 2600 567 0.75 641 1.00 706 1.25 764 1.52 819 1.79 869 2.06 918 2.37 973 2.81 2700 582 0.83 655 1.08 719 1.34 776 1.61 831 1.89 880 2.17 927 2.47 976 2.84 2800 598 0.90 670 1.17 732 1.43 789 1.71 842 2.00 892 2.29 938 2.58 983 2.92 2900 614 0.98 684 1.25 745 1.53 802 1.81 854 2.11 903 2.42 949 2.71 993 3.03 3000 630 1.07 690 1.35 759 1.63 815 1.92 866 2.23 915 2.54 961 2.85 1003 3.17 3100 646 1.16 714 1.45 773 1.74 828 2.04 878 2.35 926 2.67 972 3.00 1016 3.32 3200 662 1.26 729 1.55 787 1.86 841 2.16 891 2.48 938 2.81 983 3.14 1026 3.47 3300 679 1.36 744 1.66 801 1.98 854 2.29 904 2.61 950 2.95 995 3.30 3400 695 1.47 759 1.78 816 2.10 867 2.42 917 2.75 963 3.10 1007 3.45 3500 712 1.59 774 1.90 830 2.23 881 2.56 930 2.90 976 3.25 ———— 3600 729 1.71 790 2.03 845 2.37 895 2.71 943 3.05 988 3.41 ———— 3700 745 1.84 805 2.17 860 2.52 909 2.87 956 3.22 ————— 3750 754 1.91 813 2.24 868 2.59 917 2.95 963 3.30 ————— 3800 762 1.98 821 2.31 875 2.66 924 3.03 970 3.38 ————— 3900 779 2.12 836 2.46 890 2.82 938 3.19 ———————— 4000 796 2.27 852 2.61 905 2.98 953 3.37 ———————— 4100 813 2.42 868 2.78 920 3.15 —————————— 4200 830 2.59 884 2.95 935 3.33 —————————— 4250 839 2.68 890 3.04 ———————————— 4300 847 2.76 900 3.13 ————————————
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 3.)
2. indicates field-supplied motor and drive required.
3. Standard drive range is 685 to 935 rpm. All other rpms require a field-supplied drive.
4. Values include losses for filters, unit casing, and wet coils.
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
LEGEND
EXTERNAL STATIC PRESSURE (in. wg)
5. 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 your fan motors up to the rat­ings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.
7. Interpolation is permissible. Do not extrapolate.
19
Page 20
Table 9 — Fan Performance, 48TJ012 — Vertical Discharge Units
AIRFLOW
(Cfm)
3000 592 0.76 661 0.93 722 1.09 779 1.26 829 1.42 880 1.58 924 1.73 970 1.89 1019 2.00 1066 2.30 3100 607 0.83 676 1.01 734 1.17 791 1.34 840 1.51 890 1.68 935 1.84 977 2.00 1026 2.17 1070 2.44 3200 622 0.90 690 1.09 746 1.25 803 1.43 852 1.60 900 1.77 946 1.95 987 2.11 1029 2.28 1075 2.51 3300 638 0.98 705 1.17 759 1.33 815 1.52 864 1.70 910 1.88 957 2.06 998 2.23 1037 2.40 1082 2.58 3400 653 1.06 719 1.26 772 1.43 826 1.62 876 1.81 921 1.98 967 2.17 1009 2.35 1047 2.53 1087 2.70 3500 669 1.15 733 1.35 786 1.53 838 1.72 888 1.91 933 2.10 976 2.29 1020 2.48 1058 2.66 1095 2.84 3600 684 1.24 747 1.44 800 1.64 850 1.82 900 2.03 945 2.22 986 2.41 1030 2.61 1069 2.80 1106 2.98 3700 700 1.33 760 1.54 814 1.75 863 1.92 912 2.14 957 2.34 998 2.54 1039 2.74 1081 2.94 1117 3.13 3800 715 1.43 774 1.64 828 1.86 875 2.04 924 2.26 969 2.47 1010 2.67 1049 2.87 1091 3.08 1128 3.29 3900 731 1.54 787 1.74 843 1.98 888 2.16 936 2.38 981 2.60 1022 2.81 1060 3.02 1100 3.23 4000 747 1.64 801 1.85 857 2.10 902 2.30 948 2.51 993 2.74 1034 2.96 1072 3.17 1110 3.38 4100 763 1.76 816 1.97 872 2.23 916 2.44 960 2.64 1005 2.88 1046 3.11 1084 3.32 ———— 4200 778 1.88 831 2.10 886 2.36 929 2.58 972 2.78 1016 3.03 1058 3.26 —————— 4300 794 2.00 846 2.23 900 2.50 943 2.73 985 2.93 1028 3.17 ———————— 4400 810 2.13 861 2.37 913 2.64 958 2.89 999 3.09 1040 3.32 ———————— 4500 826 2.27 876 2.52 927 2.78 973 3.04 1012 3.26 —————————— 4600 842 2.41 892 2.67 940 2.92 987 3.21 ———————————— 4700 858 2.55 907 2.83 954 3.08 1002 3.38 ———————————— 4800 874 2.70 922 2.99 968 3.24 —————————————— 4900 890 2.86 938 3.16 ——————————————— 5000 906 3.03 953 3.33 ———————————————
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 4.)
2. indicates alternate motor and/or drive required.
3. indicates field-supplied motor and drive required.
4. Standard drive range is 685 to 935 rpm. Alternate drive range is 835 to 1085 rpm. All other rpms require a field-supplied drive.
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
LEGEND
EXTERNAL STATIC PRESSURE (in. wg)
5. Values include losses for filters, unit casing, and wet coils.
6. Maximum continuous bhp is 2.4 for the standard motor and 2.9 for thealternatemotor.Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit war­ranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.
8. Interpolation is permissible. Do not extrapolate.
Table 10 — Fan Performance, 48TJ014 — Vertical Discharge Units
AIRFLOW
(Cfm)
3700 729 1.36 790 1.58 847 1.79 902 2.06 955 2.29 1008 2.55 1060 2.80 1108 3.05 1152 3.27 1190 3.46 3800 745 1.46 805 1.69 861 1.89 915 2.17 967 2.41 1019 2.67 1070 2.94 1118 3.19 1163 3.44 1203 3.65 3900 761 1.56 820 1.80 875 2.01 928 2.29 979 2.55 1029 2.80 1079 3.07 1128 3.34 1173 3.60 1214 3.83 4000 777 1.67 836 1.92 889 2.14 941 2.40 991 2.68 1040 2.94 1089 3.22 1137 3.49 1183 3.76 1225 4.00 4100 793 1.79 851 2.05 904 2.27 955 2.52 1004 2.82 1052 3.08 1100 3.36 1147 3.65 1193 3,93 1236 4.19 4200 810 1.91 867 2.18 918 2.41 968 2.65 1017 2.96 1064 3.23 1110 3.51 1157 3.81 1202 4.09 1245 4.38 4300 826 2.04 883 2.32 933 2.55 982 2.79 1030 3.11 1076 3.40 1121 3.67 1167 3.97 1212 4.27 1255 4.56 4400 842 2.17 898 2.46 948 2.70 996 2.93 1043 3.25 1088 3.56 1133 3.84 1178 4.14 1222 4.44 1265 4.74 4500 859 2.31 914 2.60 962 2.85 1010 3.09 1056 3.40 1101 3.73 1144 4.00 1188 4.31 1232 4.62 1274 4.93 4600 876 2.45 930 2.76 977 3.01 1024 3.26 1070 3.55 1114 3.90 1157 4.19 1199 4.49 1242 4.81 1284 5.13 4700 892 2.60 945 2.91 992 3.18 1039 3.43 1083 3.71 1126 4.07 1169 4.38 1210 4.68 1252 5.00 1294 5.33 4800 909 2.77 961 3.07 1008 3.36 1053 3.61 1097 3.88 1140 4.25 1181 4.58 1222 4.87 1263 5.20 4900 926 2.93 977 3.24 1024 3.54 1068 3.80 1111 4.06 1153 4.41 1194 4.77 1234 5.09 1274 5.40 5000 942 3.11 993 3.41 1039 3.73 1080 3.99 1125 4.25 1166 4.59 1207 4.97 1247 5.30 1286 5.62 5100 959 3.29 1009 3.60 1055 3.92 1097 4.19 1139 4.46 1180 4.78 1220 5.18 1259 5.52 ———— 5200 976 3.47 1025 3.78 1071 4.12 1112 4.40 1153 4.67 1194 4.98 1233 5.38 1272 5.74 ———— 5300 993 3.67 1041 3.98 1086 4.33 1127 4.61 1168 4.90 1208 5.19 1246 5.58 —————— 5400 1010 3.87 1057 4.18 1102 4.54 1142 4.84 1182 5.13 1221 5.41 ———————— 5500 1027 4.07 1073 4.39 1118 4.76 1157 5.07 1197 5.36 1235 5.64 ———————— 5600 1043 4.29 1090 4.61 1133 4.99 1173 5.31 1211 5.61 —————————— 5700 1060 4.51 1106 4.83 1149 5.22 1189 5.55 ———————————— 5800 1077 4.74 1122 5.07 1165 5.45 —————————————— 5900 1094 4.98 1139 5.31 1181 5.70 —————————————— 6000 1111 5.22 1155 5.55 ———————————————— 6100 1128 5.48 —————————————————— 6200 1145 5.74 ——————————————————
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 4.)
2. indicates alternate motor and/or drive required.
3. indicates field-supplied motor and drive required.
4. Standard drive range is 860 to 1080 rpm. Alternate drive range is 900 to 1260 rpm. All other rpms require a field-supplied drive.
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
LEGEND
EXTERNAL STATIC PRESSURE (in. wg)
5. Values include losses for filters, unit casing, and wet coils.
6. Maximum continuous bhp is 4.2 for the standard motor and 5.25 for the alternate motor. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.
8. Interpolation is permissible. Do not extrapolate.
20
Page 21
Table 11 — Fan Performance, 48TJ008 — Horizontal Discharge Units
AIRFLOW
(Cfm)
2200 499 0.50 580 0.70 652 0.94 717 1.17 748 1.30 779 1.43 839 1.78 905 2.21 951 2.57 2250 507 0.53 586 0.73 658 0.97 722 1.22 752 1.34 783 1.46 843 1.81 908 2.25 955 2.59 2300 513 0.55 592 0.76 663 1.00 727 1.26 756 1.38 786 1.49 846 1.84 910 2.25 959 2.61 2400 528 0.60 606 0.83 674 1.06 738 1.34 766 1.46 795 1.58 853 1.88 912 2.31 967 2.68 2500 542 0.66 619 0.90 686 1.13 748 1.41 777 1.55 806 1.68 859 1.94 919 2.37 971 2.73 2550 550 0.69 627 0.94 692 1.17 754 1.45 783 1.60 812 1.74 864 1.99 920 2.39 974 2.76 2600 557 0.72 634 0.97 698 1.21 759 1.49 787 1.64 816 1.79 868 2.04 921 2.41 976 2.78 2700 573 0.79 648 1.05 711 1.29 770 1.58 798 1.73 827 1.88 878 2.16 928 2.45 983 2.88 2800 588 0.86 662 1.13 723 1.38 782 1.66 809 1.82 837 1.98 889 2.29 937 2.57 986 2.91 2900 604 0.94 676 1.21 737 1.48 794 1.76 821 1.92 848 2.08 900 2.41 947 2.70 993 3.01 3000 620 1.02 690 1.30 750 1.58 806 1.86 832 2.02 849 2.18 910 2.52 958 2.85 1002 3.15 3100 636 1.11 704 1.39 764 1.69 818 1.97 844 2.13 870 2.29 920 2.64 968 2.99 1012 3.30 3200 652 1.21 718 1.49 778 1.80 831 2.09 856 2.25 882 2.40 931 2.76 979 3.13 1023 3.47 3300 668 1.31 732 1.59 793 1.92 844 2.21 869 2.37 894 2.53 942 2.89 989 3.26 1034 3.63 3400 684 1.41 747 1.70 807 2.04 857 2.35 882 2.51 907 2.66 954 3.02 1000 3.40 1044 3.79 3500 701 1.53 762 1.82 821 2.16 871 2.48 895 2.64 919 2.80 966 3.15 1011 3.55 1054 3.94 3600 717 1.65 777 1.94 835 2.29 885 2.63 908 2.79 932 2.95 978 3.30 1022 3.69 1065 4.10 3700 733 1.77 792 2.07 849 2.42 899 2.78 922 2.95 945 3.11 990 3.45 1034 3.84 1076 4.26 3750 742 1.84 800 2.14 856 2.49 907 2.86 929 3.03 952 3.20 997 3.54 1040 3.93 1082 5.27
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 4.)
2. indicates alternate drive required.
3. indicates field-supplied motor and drive required.
4. Standard drive range is 590 to 840 rpm. Alternate drive range is 685 to 935 rpm. All other rpms require a field-supplied drive.
0.2 0.4 0.6 0.8 0.9 1.0 1.2 1.4 1.6
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
LEGEND
EXTERNAL STATIC PRESSURE (in. wg)
5. Values include losses for filters, unit casing, and wet coils.
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 your fan motors up to the rat­ings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.
8. Interpolation is permissible. Do not extrapolate.
Table 12 — Fan Performance, 48TJ009 — Horizontal Discharge Units
AIRFLOW
(Cfm)
2550 550 0.69 627 0.94 692 1.17 754 1.45 783 1.60 812 1.74 864 1.99 920 2.39 974 2.76 2600 557 0.72 634 0.97 698 1.21 759 1.49 787 1.64 816 1.79 868 2.04 921 2.41 976 2.78 2700 573 0.79 648 1.05 711 1.29 770 1.58 798 1.73 827 1.88 878 2.16 928 2.45 983 2.88 2800 588 0.86 662 1.13 723 1.38 782 1.66 809 1.82 837 1.98 889 2.29 937 2.57 986 2.91 2900 604 0.94 676 1.21 737 1.48 794 1.76 821 1.92 848 2.08 900 2.41 947 2.70 993 3.01 3000 620 1.02 690 1.30 750 1.58 806 1.86 832 2.02 849 2.18 910 2.52 958 2.85 1002 3.15 3100 636 1.11 704 1.39 764 1.69 818 1.97 844 2.13 870 2.29 920 2.64 968 2.99 1012 3.30 3200 652 1.21 718 1.49 778 1.80 831 2.09 856 2.25 882 2.40 931 2.76 979 3.13 1023 3.47 3300 668 1.31 732 1.59 793 1.92 844 2.21 869 2.37 894 2.53 942 2.89 989 3.26 1034 3.63 3400 684 1.41 747 1.70 807 2.04 857 2.35 882 2.51 907 2.66 954 3.02 1000 3.40 1044 3.79 3500 701 1.53 762 1.82 821 2.16 871 2.48 895 2.64 919 2.80 966 3.15 1011 3.55 1054 3.94 3600 717 1.65 777 1.94 835 2.29 885 2.63 908 2.79 932 2.95 978 3.30 1022 3.69 1065 4.10 3700 733 1.77 792 2.07 849 2.42 899 2.78 922 2.95 945 3.11 990 3.45 1034 3.84 1076 4.26 3750 742 1.84 800 2.14 856 2.49 907 2.86 929 3.03 952 3.20 997 3.54 1040 3.93 1082 5.27 3800 750 1.90 807 2.21 863 2.56 914 2.93 936 3.11 958 3.28 1003 3.62 1045 4.01 1087 4.43 3900 767 2.04 822 2.35 877 2.71 928 3.09 950 3.27 972 3.45 1015 3.80 1057 4.18 1098 4.60 4000 783 2.18 838 2.50 891 2.86 942 3.26 964 3.45 986 3.63 1028 3.99 1070 4.36 1110 4.78 4100 800 2.34 854 2.66 905 3.02 956 2.43 978 3.62 1000 3.81 1042 4.18 1082 4.56 1122 4.97 4200 817 2.49 869 2.82 920 3.19 970 3.60 992 3.80 1015 4.00 1055 4.38 1095 4.76 1134 5.16 4250 826 2.58 877 2.91 928 3.28 977 3.69 999 3.90 1022 4.10 1062 4.49 1102 4.87 1140 5.27 4300 834 2.66 885 3.00 935 3.37 984 3.78 1006 3.99 1029 4.20 1069 4.59 1108 4.98 1147 5.38
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 3.)
2. indicates field-supplied motor and drive required.
3. Standard drive range is 685 to 935 rpm. All other rpms require a field-supplied drive.
4. Values include losses for filters, unit casing, and wet coils.
0.2 0.4 0.6 0.8 0.9 1.0 1.2 1.4 1.6
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
LEGEND
EXTERNAL STATIC PRESSURE (in. wg)
5. 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 your fan motors up to the rat­ings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.
7. Interpolation is permissible. Do not extrapolate.
21
Page 22
Table 13 — Fan Performance, 48TJ012 — Horizontal Discharge Units
AIRFLOW
(Cfm)
3000 552 0.68 632 0.87 701 1.05 761 1.22 816 1.36 871 1.54 918 1.67 967 1.89 1010 2.09 1063 2.46 3100 565 0.74 644 0.93 711 1.12 772 1.31 825 1.45 879 1.63 928 1.78 973 1.94 1018 2.17 1070 2.51 3200 578 0.81 656 1.00 723 1.20 782 1.39 835 1.55 887 1.71 937 1.90 981 2.04 1026 2.26 1075 2.57 3300 591 0.88 668 1.08 734 1.28 793 1.47 845 1.65 895 1.80 946 2.00 991 2.16 1032 2.32 1080 2.64 3400 605 0.96 680 1.16 745 1.36 803 1.56 856 1.75 904 1.91 953 2.10 1000 2.29 1041 2.44 1083 2.65 3500 619 1.04 691 1.23 755 1.44 813 1.65 867 1.86 914 2.03 961 2.20 1009 2.41 1051 2.57 1090 2.74 3600 633 1.13 703 1.31 766 1.52 824 1.74 877 1.97 924 2.15 970 2.32 1017 2.53 1061 2.72 1099 2.88 3700 648 1.23 714 1.39 777 1.61 835 1.85 887 2.07 935 2.28 980 2.45 1024 2.64 1069 2.87 1109 3.03 3800 662 1.33 726 1.51 789 1.72 846 1.95 897 2.18 946 2.40 989 2.58 1033 2.76 1077 2.99 1118 3.20 3900 677 1.44 738 1.61 801 1.82 857 2.06 908 2.29 956 2.53 1000 2.73 1042 2.91 1085 3.12 1127 3.36 4000 692 1.55 750 1.73 813 1.94 868 2.17 918 2.40 967 2.66 1010 2.87 1052 3.06 1093 3.24 4100 707 1.67 762 1.84 825 2.05 878 2.28 929 2.53 977 2.78 1021 3.02 1062 3.22 1102 3.41 4200 722 1.80 775 1.97 837 2.16 889 2.40 941 2.66 987 2.91 1032 3.17 1072 3.38 ———— 4300 737 1.94 787 2.09 848 2.27 900 2.52 952 2.80 999 3.04 1042 3.32 —————— 4400 752 2.08 800 2.21 860 2.39 912 2.66 962 2.93 1008 3.19 ———————— 4500 768 2.24 814 2.35 871 2.51 924 2.80 973 3.07 1019 3.34 ———————— 4600 783 2.40 827 2.50 883 2.64 937 2.95 983 3.21 —————————— 4700 799 2.56 841 2.64 894 2.77 949 3.10 994 3.36 —————————— 4800 814 2.74 855 2.80 906 2.91 961 3.26 ———————————— 4900 868 2.90 918 3.05 972 3.40 ———————————— 5000 883 3.10 931 3.21 —————————————
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 4.)
2. indicates alternate motor and/or drive required.
3. indicates field-supplied motor and drive required.
4. Standard drive range is 685 to 935 rpm. Alternate drive range is 835 to 1085 rpm. All other rpms require a field-supplied drive.
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
LEGEND
EXTERNAL STATIC PRESSURE (in. wg)
5. Values include losses for filters, unit casing, and wet coils.
6. Maximum continuous bhp is 2.4 for the standard motor and 2.9 for thealternatemotor.Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit war­ranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.
8. Interpolation is permissible. Do not extrapolate.
Table 14 — Fan Performance, 48TJ014 — Horizontal Discharge Units
AIRFLOW
(Cfm)
3700 677 1.20 748 1.43 810 1.65 869 1.89 928 2.17 984 2.43 1036 2.68 1080 2.90 1114 3.07 1135 3.17 3800 691 1.28 761 1.52 822 1.75 880 1.98 937 2.28 993 2.55 1046 2.81 1092 3.05 1129 3.25 1156 3.39 3900 705 1.37 773 1.62 834 1.86 891 2.08 947 2.39 1002 2.66 1055 2.94 1102 3.20 1143 3.42 1174 3.59 4000 720 1.47 786 1.71 847 1.97 902 2.19 957 2.50 1011 2.79 1064 3.07 1112 3.34 1155 3.59 1190 3.80 4100 734 1.56 800 1.82 860 2.09 914 2.31 967 2.60 1021 2.91 1072 3.20 1121 3.49 1165 3.76 1203 3.99 4200 749 1.66 813 1.92 873 2.21 926 2.44 978 2.71 1030 3.04 1081 3.34 1130 3.64 1175 3.92 1215 4.18 4300 764 1.77 826 2.04 886 2.33 938 2.57 989 2.83 1040 3.18 1090 3.48 1139 3.79 1185 4.08 1226 4.36 4400 779 1.88 840 2.16 899 2.46 951 2.71 1000 2.96 1050 3.31 1100 3.63 1148 3.94 1194 4.25 1236 4.54 4500 793 1.99 854 2.28 912 2.59 963 2.86 1012 3.09 1061 3.43 1109 3.78 1157 4.09 1203 4.42 1246 4.72 4600 808 2.11 868 2.42 925 2.73 975 3.00 1024 3.25 1071 3.56 1119 3.93 1166 4.26 1212 4.58 1255 4.91 4700 822 2.24 882 2.56 937 2.86 988 3.16 1036 3.42 1082 3.70 1129 4.09 1175 4.43 1221 4.76 1264 5.09 4800 837 2.37 896 2.71 950 3.00 1001 3.32 1048 3.59 1093 3.86 1139 4.24 1185 4.60 1230 4.93 1273 5.28 4900 852 2.51 910 2.86 963 3.15 1014 3.48 1060 3.76 1105 4.02 1150 4.38 1194 4.77 1239 5.12 1282 5.47 5000 867 2.65 924 3.01 977 3.30 1027 3.65 1073 3.94 1117 4.20 1161 4.54 1204 4.95 1248 5.31 1291 5.66 5100 882 2.79 938 3.17 990 3.46 1040 3.82 1085 4.12 1129 4.40 1172 4.71 1214 5.13 1257 5.51 5200 896 2.95 952 3.33 1003 3.63 1053 4.00 1098 4.30 1141 4.60 1183 4.91 1225 5.29 1267 5.70 5300 911 3.11 967 3.50 1017 3.80 1066 4.18 1111 4.50 1153 4.80 1194 5.08 1236 5.47 ———— 5400 926 3.27 981 3.68 1030 3.98 1079 4.35 1124 4.70 1166 5.01 1206 5.29 1247 5.65 ———— 5500 940 3.44 995 3.86 1044 4.17 1092 4.54 1137 4.91 1178 5.22 1218 5.52 —————— 5600 955 3.62 1010 4.04 1058 4.38 1105 4.73 1150 5.12 1190 5.44 1230 5.75 —————— 5700 970 3.80 1024 4.23 1072 4.59 1118 4.93 1163 5.34 1203 5.67 ———————— 5800 985 3.99 1039 4.42 1086 4.80 1131 5.14 1176 5.56 —————————— 5900 1000 4.18 1053 4.62 1100 5.02 1144 5.36 ———————————— 6000 1015 4.39 1068 4.83 1114 5.25 1158 5.58 ———————————— 6100 1030 4.59 1083 5.04 1128 5.48 —————————————— 6200 1046 4.81 1097 5.26 1142 5.71 ——————————————
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates field-supplied drive required. (See Note 4.)
2. indicates alternate motor and/or drive required.
3. indicates field-supplied motor and drive required.
4. Standard drive range is 860 to 1080 rpm. Alternate drive range is 900 to 1260 rpm. All other rpms require a field-supplied drive.
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
LEGEND
EXTERNAL STATIC PRESSURE (in. wg)
5. Values include losses for filters, unit casing, and wet coils.
6. Maximum continuous bhp is 4.2 for the standard motor and 5.25 for the alternate motor. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
7. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.
8. Interpolation is permissible. Do not extrapolate.
22
Page 23
START-UP
Unit Preparation —
stalled in accordance with these installation instructions and applicable codes. Make sure that Start-Up Checklist has been completed and filled out.
Make sure that unit has been in-
Return-Air Filters — Make sure correct filters are in-
stalled in filter tracks (see Table 1). Do not operate unit with­out return-air filters.
Outdoor-AirInlet Screens— Outdoor-airinlet screens
must be in place before operating unit.
Compressor Mounting — Compressors are inter-
nally spring mounted. Do not loosen or remove compressor holddown bolts. On 48TJ014 units, remove the tiedown bands that hold the compressors together.
Internal Wiring — Check all electrical connections in
unit control boxes. Tighten as required.
Refrigerant Service Ports — Each refrigerant sys-
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.
Compressor Rotation — On 3-phase units with scroll
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
pressure does not rise to normal levels:
1. Note that the evaporator fan is probably also rotating in the wrong direction.
2. Turn off power to the unit.
3. Reverse any two of the unit power leads.
4. Reapply power to the 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
direction, the unit will make an elevated level of noise and will not provide cooling.
Cooling — To start unit, turn on main power supply. Set
system selector switch at COOL position and fan switch at AUTO. position. Adjust thermostat to a setting below room temperature. Compressor starts on closure of contactor.
Check unit charge. Refer to Service, Refrigerant Charge
section, page 26.
Reset thermostat at a position above room temperature. Compressor will shut off. Evaporator fan will shut off after 30-second delay.
TO SHUT OFF UNIT — Set system selector switch at OFF position. Resetting thermostat at a position above room tem­perature shuts unit off temporarily until space temperature exceeds thermostat setting.
MainBurners — Main burners are factory set and should
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 15 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.
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. Turn 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.
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 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. To 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 1.
NOTE: The default value for the evaporator-fan motor ON and OFF delay is 45 seconds. The Integrated Gas Unit 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 switch 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 since 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.Ifthe limit switch trips during this period, the evaporator-fan OFF delay will increase by 15 seconds. A maximum of 9 trips can occur, extending the evaporator-fan OFF delay to 180 seconds.
To restore the original default value, reset the power to the unit.
TO SHUT OFF UNIT — Set system selector switch at OFF position. Resetting heating selector lever below room tem­perature will shut unit off temporarily until space tempera­ture falls below thermostat setting.
23
Page 24
Table 15 — Altitude Compensation*
125,000, 180,000, AND
224,000 BTUH
ELEVATION
(Ft)
0-2,000 31 41 30 38
2,000 32 42 30 39 3,000 32 42 31 40 4,000 32 42 32 41 5,000 33 43 33 42 6,000 34 43 34 43 7,000 35 44 35 43 8,000 36 44 36 44
9,000 37 45 37 44 10,000 38 46 38 45 11,000 39 47 39 45 12,000 40 47 40 46 13,000 41 48 41 47 14,000 42 48 42 47
*As the height above sea level increases, there is less oxygen per
cubic foot of air. Therefore, heat input rate should be reduced at higher altitudes.
†Orifice available through your local distributor.
NOMINAL INPUT
Natural
Gas
Orifice
Size†
Liquid
Propane
Orifice
Size†
250,000 BTUH
NOMINAL INPUT
Natural
Gas
Orifice
Size†
Liquid
Propane
Orifice
Size†
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 sys-
tem selector switches at ON and OFF positions, respec­tively.Evaporator fan operates continuously to provide con­stant air circulation. When the evaporator-fan selector 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 evaporator­fan motor, compressor no. 1, and condenser fan start. The condenser-fan 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 mo­tor (OFM) shut off. After a 30-second delay, the indoor (evaporator) fan motor (IFM) shuts off. If the thermostat fan selector switch is in the ON position, the evaporator motor will run continuously.
HEATING, UNITS WITHOUT ECONOMIZER — When the thermostat calls for heating, 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 (MGV) is energized. When the thermostat is satisfied and W1 and W2 are deenergized, the IFM stops 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-air 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 57 F, the damper continues to open until it reaches the fully open position or until the supply-air temperature drops below 52 F.
When the supply-air temperature falls to between 57 F and 52 F, the damper will remain at an intermediate open position. If the supply-air temperature falls below 52 F, the damper will modulate closed until it reaches the minimum position or until the supply-air temperature is above 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.
If the outdoor air alone cannot satisfy the cooling require­ments of the conditioned space, economizer cooling is in­tegrated with mechanical cooling, providing second-stage cooling. Compressor no. 1 and the condenser fan 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 off. If the ther­mostat fan selector switch is in the ON position, the IFM will run continuously.
COOLING UNITS WITH PARABLADE ECONOMIZER — When the outdoor air is above the enthalpy control set­ting, and the room thermostat calls for cooling, the compres­sor contactor no. 1 is energized to start compressor no. 1 and the outdoor (condenser) fan motor. The indoor (evaporator) fan motor is energized and the economizer damper moves to the minimum position. Upon further call for cooling, com­pressor contactor no. 2 is energized, starting compressor no. 2. After the room thermostat is satisfied the damper will spring return to the fully closed position.
When the outdoor air is below the enthalpy control setting and the thermostat calls for cooling, the economizer outdoor air damper is opened proportionally to maintain between 50 and 56 F at the mixed air sensor. If outside air alone cannot satisfy the cooling requirements, economizer cooling is in­tegrated with mechanical cooling and the second compres­sor is locked out. When the room thermostat is satisfied, the damper will spring return to the fully closed position.
HEATING, UNITSWITH ECONOMIZER — When the ther­mostat calls for heating, 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 is then energized and the burner ignition sequence begins. The indoor (evaporator) fan motor (IFM) is energized 45 seconds after a flame is ignited and the damper moves to the minimum position. 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 (MGV) is energized. When the thermostat is satisfied and W1 and W2 are deenergized, the IFM stops after a 45 sec­ond time-off delay. The economizer damper then moves to the fully closed position. When using continuous fan, the damper will remain in the minimum position.
24
Page 25
SERVICE
When servicing unit, shut off all electrical power to unit to avoid shock hazard or injury from rotating parts.
Cleaning — Inspect unit interior at the beginning of each
heating and cooling season and as operating conditions require.
EVAPORATOR COIL — Clean coil as required. Inspect coil at beginning of heating and cooling seasons.
1. Turn unit power off.Remove 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. Slide filters out of 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 best results, back­flush toward return-air section to remove foreign material.
5. Flush condensate pan after completion.
6. Reinstall economizer and filters.
7. Reconnect wiring.
8. Replace access panels.
CONDENSER COIL — Inspect coil monthly. Clean con­denser coil annually,and as required by location and outdoor­air conditions.
One-Row Coils — Washcoil with commercial cleaner. Clean outer surfaces with a stiff brush in the normal manner. It is not necessary to remove top panel.
2-Row Coils — Clean coil as follows:
1. Turn off unit power.
2. Remove top panel screws on condenser end of unit.
3. Remove condenser coil corner post. See Fig. 37. To hold top panel open, place coil corner post between top panel and center post. See Fig. 38.
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. 39.
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 stiffbrush 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.
Fig. 37 — Cleaning Condenser Coil
Fig. 38 — Propping Up Top Panel
Fig. 39 — Separating Coil Sections
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.
25
Page 26
Condenser-Fan Adjustment (Fig. 40)
1. Shut off unit power supply.
2. Remove condenser-fanassembly (grille, motor, motor cover, and fan) and loosen fan hub setscrews.
3. Adjust fan height as shown in Fig. 40.
4. Tighten setscrews and replace condenser-fan assembly.
48TJ UNIT VOLTAGE FAN HEIGHT ‘‘A’’ (in.)
208/230 V 2.75
460 V and 575 V 3.50
Fig. 40 — Condenser-Fan Adjustment
ManualOutdoor-Air Damper— If outdoor-air damper
blade is required, see Manual Outdoor-Air Damper section on page 11.
EconomizerAdjustment— Refer to Optional Econo-
mizer sections on pages 12 and 15.
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 affectthereading. Indoor­air cfm must be within the normal operating range of the unit.
TO USE COOLING CHARGING CHART— 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 recover some of the charge. Recheck the suction pressure as charge is ad­justed. Example (Fig. 44, Circuit 2):
Outdoor Temperature ..........................85F
Suction Pressure ...........................74psig
Suction Temperature should be ..................56F
(Suction temperature may vary±5F.)
If Chargemastert charging device is used, temperature and pressure readings must be accomplished using the charging charts.
CondenserCoil 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 Table 1). Refer to Carrier GTAC 2-5 Charging, Recovery, Recycling, and Rec­lamation training manual and the following procedures.
Unit panels must be in place when unit is operating dur-
ing charging procedure. NO CHARGE — Use standard evacuating techniques. After
evacuating system, weigh in the specified amount of refrig­erant (refer to Table 1).
LOW CHARGE COOLING — Using Cooling Charging Charts, Fig. 41-44, 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
Fig. 41 — Cooling Charging Chart; 48TJ008
26
Page 27
Fig. 42 — Cooling Charging Chart; 48TJ009
Fig. 43 — Cooling Charging Chart; 48TJ012
27
Page 28
Fig. 44 — Cooling Charging Chart; 48TJ014
Flue Gas Passageways — To inspect the flue col-
lector 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 as-
sure 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 drafthood 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 hous-
ing to vestibule plate (Fig. 45).
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. 7).
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. 12). Module con­tains a self-diagnostic LED. 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 information, refer to the Start-Up, Heating section on page 23. The LED error code can be ob­served through the viewport. See Fig. 12. During servicing refer to the label on the control box cover or Table 16 for an explanation of LED error code descriptions.
If lockout occurs, unit may be adjusted by interrupting power
supply to unit for at least 5 seconds.
Table 16 — LED Error Code Description*
LED INDICATION ERROR CODE DESCRIPTION
ON Normal Operation
OFF Hardware Failure
1 Flash† Evaporator Fan On/Off Delay Modified 2 Flashes Limit Switch Fault 3 Flashes Flame Sense Fault 4 Flashes 4 Consecutive Limit Switch Faults 5 Flashes Ignition Lockout Fault 6 Flashes Induced-Draft Motor Fault 7 Flashes Rollout Switch Fault 8 Flashes Internal Control Fault
LED — Light-Emitting Diode
*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 op-
erate when this code is displayed.
IMPORTANT: Refer to Troubleshooting Tables17-21 for additional information.
Main Burners — At the beginning of each heating sea-
son, inspect for deterioration or blockage due to corrosion or other causes. Observe the main burner flames and adjust if necessary.
When working on gas train, do not hit or plug orifice spuds.
28
Page 29
REMOVAL AND REPLACEMENT OF GAS TRAIN (Fig. 45 and 46)
1. Shut off manual gas valve.
2. Shut off power to unit.
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. 46).
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, above.
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. 47.
5. Reinstall burners on rack.
6. Reinstall burner rack as described in Removal and Re­placement of Gas Train section, this page.
INDUCED-DRAFT MOTOR
MANIFOLD PRESSURE TAP
GAS VALVE
Fig. 45 — Burner Section Details
ROLLOUT SWITCH
BURNER SECTION
FLUE
FLUE EXHAUST
EXHAUST
VESTIBULE PLATE
Replacement Parts — A complete list of replace-
ment parts may be obtained from any Carrier distributor upon request.
Fig. 46 — Burner Tray Details
29
Page 30
48TJD008,009
48TJD012, 48TJE008,009
125,000 BTUH INPUT
120,000-180,000 BTUH INPUT
180,000-224,000 BTUH INPUT 200,000-250,000 BTUH INPUT
48TJD014; 48TJE012 48TJE014; 48TJF012
NOTE: Dimensions in ( ) are millimeters.
48TJF008,009
Fig. 47 — Spark Gap Adjustment
30
Page 31
TROUBLESHOOTING
Table 17 — LED Error Code Service Analysis
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)
LEGEND
IGC — Integrated Gas Unit Controller LED — Light-Emitting Diode
Loss of power to control module (IGC). Check 5-amp fuse on IGC, power to unit, 24-v circuit
High temperature limit switch is open. Check the operation of the indoor (evaporator) fan mo-
The IGC sensed flame that should not be present. Reset unit. If problem persists, replace control board. Inadequate airflow to unit. Check operation of indoor (evaporator) fan motor and
Unit unsuccessfully attempted ignition for 15 minutes. Check ignitor and flame sensor electrode spacing, gaps,
IGC does not sense that induced-draft motor is operating.
Rollout switch has opened. Rollout switch will automatically reset, but IGC will con-
Microprocessor has sensed an error in the software or hardware.
breaker, 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.
tor. Ensure that the supply-air temperature rise is in ac­cordance with the range on the unit nameplate.
that supply-air temperature rise agrees with range on unit nameplate information.
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.
tinue to lock out unit. Check gas valve operation. Ensure that induced-draft 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 21 — 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 andmaybedamagedifthe necessary precautions are not taken.
31
Page 32
Table 18 — 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.
LEGEND
C1 Common Power EC Enthalpy Control IFC — Indoor (Evaporator) Fan Contactor IFO — Indoor (Evaporator) Fan On OAT — Outdoor-Air Thermostat PL Plug SAT — Supply-Air Thermostat SW — Economizer Position Switch
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 (3 F below indoor space temperature).
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.
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.
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 ter­minal 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 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 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 discon­nected from unit. If 14 vdc is not present, replace the control board.
32
Page 33
Table 19 — PARABLADE Economizer Service Troubleshooting
PROBLEM CAUSE REMEDY
Damper does not open.
Economizer opera­tion limited to mini­mum position.
Damper does not close.
Damper does not open or close according to enthalpy readings.
LEGEND
LED — Light-Emitting Diode
Evaporator fan not on. Check wiring between G on connection board and indoor (evaporator) No power to economizer motor. 1. Disconnect power at TR and TR1. Disconnect jumper across P
Economizer motor failure. If the indoor (evaporator) fan and economizer motor are energized,
Economizer control module failure.
No power to economizer. 1. Disconnect power at TR and TR1. Disconnect jumper across P
Spring return failure. If power to unit is off and damper does not close, check for a bound
Economizer motor failure. If the economizer control module is functioning properly, verify that
Sensor incorrectly wired or bad. To verify sensor operation, reconnect the + lead of the outdoor en-
fan contactor.
and P1.
2. Connect jumper across TR and 1.
3. Connect jumper across T1 and T.
4. If connected, remove enthalpy sensor from terminals S Factory-installed 620 ohm resistor should be connected to termi­nals SRand +.
5. Apply power (24 vac) to terminals TR and TR1. The LED should be off and the damper should be in the closed position.
6. Disconnect the factory-installed 620 ohm resistor from terminals S
and +. The LED should light up and the motor should drive to-
R
wards open. If this does not happen, replace the economizer con­trol module.
verify that there is a minimum of 24 vac at terminals TR and TR1. If the motor is not operating, replace the motor.
1. To simulate high or low enthalpy, reconnect the factory-installed 620 ohm resistor across terminals S
2. Connect 1.2 Kohm checkout resistor across terminals Soand +. Turn the enthalpy set point to ‘‘A.’’ The LED should turn on, indi­cating low enthalpy. The motor should drive towards open. If LED does not light, replace module. If motor does not drive open, check motor operation.
3. Turn the enthalpy set point to ‘‘D.’’ The LED should turn off, indi­cating high enthalpy. The motor should drive towards closed. If these actions do not occur, replace module.
4. Disconnect 1.2 Kohm checkout resistor before resuming operation. and P1.
2. Connect jumper across TR and 1.
3. Connect jumper across T1 and T.
4. If connected, remove enthalpy sensor from terminals S Factory-installed 620 ohm resistor should be connected to termi­nals SRand +.
5. Apply power (24 vac) to terminals TR and TR1. The LED should be off and the damper should be in the closed position.
6. Disconnect the factory-installed 620 ohm resistor from terminals S
and +. The LED should light up and the motor should drive to-
R
wards open. If this does not happen, replace the economizer con­trol module.
linkage. If linkage is not bound, then internal spring may be broken. Replace actuator.
there is a minimum of 24 vac at terminals TR and TR1. If the motor is not operating, replace the motor.
thalpy sensor to the + terminal of the economizer control module. Connect a DC milliammeter between terminals S control module and terminal S of the enthalpy sensor. The milliamme­ter should indicate between 3 and 25 mA if the sensor is operating properly. If the milliammeter indicates 0, the sensor may be wired backwards. If any other readings are shown, replace the sensor.
and +.
R
and +.
o
and +.
o
of the economizer
o
33
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Table 20 — 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 makes excessive noise (48TJ014 scroll only)
Compressor operates continuously.
Excessive head pressure. Dirty air filter. Replace filter.
Head pressure too low. Low refrigerant charge. Check for leaks, repair, and recharge.
Excessive suction pressure.
Suction pressure too low. Dirty air filter. Replace filter.
Compressor no. 2 will not run.
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 compressor circuit. Check wiring and repair or replace. Compressor motor burned out, seized, or internal
overload open. Defective run/start capacitor, overload, or start relay. Determine cause and replace. One leg of 3-phase power dead. Replace fuse or reset circuit breaker.
Refrigerant overcharge or undercharge. Recover refrigerant, evacuate system, and recharge 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. Determine cause and replace. Defective thermostat. Replace thermostat. Faulty condenser-fan motor or capacitor. Replace. Restriction in refrigerant system. Locate restriction and remove. Compressor rotating in wrong direction. Reverse the 3-phase power leads as described
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 recharge. Condenser coil dirty or restricted. Clean coil or remove restriction.
Dirty condenser coil. Clean coil. Refrigerant overcharged. Remove excess refrigerant. Air in system. Recover refrigerant, evacuate system, and recharge. Condenser air restricted or air short-cycling. Determine cause and correct.
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.
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.
Replace component.
Determine cause. Replace compressor.
Determine cause. to nameplate.
on page 23.
necessary.
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Table 21 — Heating Service Troubleshooting
PROBLEM CAUSE REMEDY
Burners will not ignite.
Inadequate heating. Dirty air filter. Clean or replace filter as necessary.
Poor flame characteristics.
Burners will not turn off.
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 overcur-
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
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 op-
Limit switch cycles main burners. Check rotation of blower, thermostat heat anticipator set­Too much outdoor air. Adjust minimum position.
Incomplete combustion (lack of combustion air) results in:
Aldehyde odors, CO, sooting flame, or floating flame.
Unit is locked into Heating mode for a one minute minimum.
Adjust as needed. gas line of air, allow gas to dissipate for at least 5 min-
utes before attempting to relight unit. Check gas valve.
rent protection require a cool down period before resetting.
input. If too low, increase manifold pressure, or replace with correct orifices.
tional blower, as suitable for individual units. tings, and temperature rise of unit. Adjust as needed.
Check economizer operation. Check all screws around flue outlets and burner com-
partment. Tighten as necessary. Cracked heat exchanger. 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. Wait until mandatory one minute time period has
elapsed or power to unit.
LEGEND AND NOTES FOR FIG. 48
IMPORTANT: Refer to unit wiring label for actual unit wiring information.
AHA Adjustable Heat Anticipator BR Burner Relay C—Contactor, Compressor CAP Capacitor CB Circuit Breaker CC Cooling Compensator COMP — Compressor Motor CR Control Relay D—Diode EC Enthalpy Control EPS Economizer Pressure Switch EQUIP — Equipment FPT Freeze-Protection
GND Ground GVR Gas Valve Relay HPS High-Pressure Switch HS Hall Effect Sensor I—Ignitor IDM Induced-Draft Motor IFC Indoor (Evaporator) Fan
NOTES:
1. If any of the original wire furnished 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.
3. Thermostat: HH07AT170, 172, 174 and P272-2783 Subbase: HH93AZ176, 178 and P272-1882, 1883
4. Set heat anticipator for first stage at 0.14 amp, second stage at
0.2 amp.
Thermostat
Contactor
IFM Indoor (Evaporator) Fan Motor IGC Integrated Gas Unit
LED Light Emitting Diode LPS Low-Pressure/Loss-of-Charge
LS Limit Switch MGV — Main Gas Valve MTR Motor OAT Outdoor Air Thermostat OFM Outdoor-Fan Motor PL Plug Assembly QT Quadruple Terminal R—Relay RS Rollout Switch SAT Supply Air Thermostat SEN Sensor TC Thermostat-Cooling TH Thermostat-Heating TRAN — Transformer
Controller
Switch
Field Splice Marked Wire
Terminal (Marked) Terminal (Unmarked)
Terminal Block Splice
Splice (Marked) Factory Wiring
Field Control Wiring Field Power Wiring Accessory or Optional Wiring To indicate common potential
only, not to represent wiring
5. Use copper conductors only.
6. TRAN is wired for 230 v unit. If unit is to be run with 208 v power supply,disconnect BLK wire from 230 v tap (RED) and connect to 200 v tap (BLU). Insulate end of 230 v tap.
7. When economizer assembly is installed move GRA wire from con­nection board (Y1) to GRA wire from PL6,5; move ORN wire from connection board (Y2) to ORN wire from PL6,9, on economizer assembly.
35
Page 36
Fig. 48 — Typical Wiring Schematic and Component Arrangement
36
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Page 38
Copyright 1996 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4 Tab 1a 6a
PC 111 Catalog No. 564-934 Printed in U.S.A. Form 48TJ-13SI Pg 38 9-96 Replaces: 48TJ-10SI
Page 39
Page 40
I. PRELIMINARY INFORMATION
START-UP CHECKLIST
(Remove and Store in Job File)
MODEL NO.: DATE:
SERIAL NO.: TECHNICIAN:
II. PRE-START-UP (insert checkmark in box as each item is completed)
M VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT M REMOVE SHIPPING TIE DOWN BANDS ON COMPRESSOR (SIZE 014 ONLY) PER INSTALLATION
INSTRUCTIONS
M VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS M CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS M CHECK GAS PIPING FOR LEAKS M CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE M VERIFY THAT UNIT INSTALLATION IS LEVEL M CHECK FAN WHEELS AND PROPELLERS FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW
TIGHTNESS
III. START-UP
ELECTRICAL
SUPPLY 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 WB COOLING SUPPLY AIR DB GAS HEAT SUPPLY AIR DB
PRESSURES
GAS INLET PRESSURE IN. WG GAS MANIFOLD PRESSURE IN. WG (HI FIRE) REFRIGERANT SUCTION PSIG — CIRCUIT NO. 1 PSIG — CIRCUIT NO. 2 REFRIGERANT DISCHARGE PSIG — CIRCUIT NO. 1 PSIG — CIRCUIT NO. 2
M VERIFY REFRIGERANT CHARGE USING CHARGING TABLES
M VERIFY THAT 3-PHASE SCROLL COMPRESSOR ROTATING IN CORRECT DIRECTION (48TJ014 ONLY)
Copyright 1996 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4 Tab 1a 6a
PC 111 Catalog No. 564-934 Printed in U.S.A. Form 48TJ-13SI Pg CL-1 9-96 Replaces: 48TJ-10SI
CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE
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