Installation, Start-Up and Service Instructions CONTENTS

Installation, Start-Up and Service Instructions CONTENTS
48TJ016-028
Single-Package Rooftop Units
Electric Cooling/Gas Heating
50 Hz
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Step 1 — Provide Unit Support . . . . . . . . . . . . . . . . . . . . . .1
• ROOF CURB
• ALTERNATE UNIT SUPPORT
Step 2 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . .3
• POSITIONING
• ROOF MOUNT
Step 3 — Field Fabricate Ductwork . . . . . . . . . . . . . . . . . .9
Step 4 — Make Unit Duct Connections . . . . . . . . . . . . . .9
Step 5 — Install Flue Hood and Wind Baffle . . . . . . . . .9
Step 6 — Trap Condensate Drain . . . . . . . . . . . . . . . . . . .10
Step 7 — Orifice Change . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Step 8 — Install Gas Piping. . . . . . . . . . . . . . . . . . . . . . . . .11
Step 9 — Make Electrical Connections . . . . . . . . . . . . .11
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
• OPTIONAL NON-FUSED DISCONNECT
• OPTIONAL CONVENIENCE OUTLET
Step 10 — Make Outdoor-Air Inlet
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
• MANUAL OUTDOOR-AIR DAMPER
Step 11 — Install Outdoor-Air Hood . . . . . . . . . . . . . . . .13
Step 12 — Adjust Factory-Installed Options . . . . . . . .14
Step 13 — Install All Accessories. . . . . . . . . . . . . . . . . . .19
Step 14 — Install Humidistat for Optional
MoistureMiser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-31
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-42
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43-47
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance 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. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguishers available for all brazing operations.
1. Improper installation, adjustment, alteration, service,
or maintenance can cause property damage, personal
injury, or loss of life. Refer to the User’s Information
Manual provided with this unit for more details.
2. Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
What to do if you smell gas:
1. DO NOT try to light any appliance.
2. DO NOT touch any electrical switch, or use any
phone in your building.
3. IMMEDIATELY call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
4. If you cannot reach your gas supplier, call the fire
department.
Disconnect gas piping from unit when leak
testing at pressure greater than 3.4 kPa
(1/2 psig). Pressures greater than 3.4 kPa
(1/2 psig) will cause gas valve damage resulting in hazardous condition. If gas valve is
subjected to pressure greater than 3.4 kPa
(1/2 psig), it must be replaced before use.
When pressure testing field-supplied gas piping at pressures of 3.4 kPa (1/2 psig) or less, a
unit connected to such piping must be isolated by manually closing the gas valve(s).
IMPORTANT: Units have high ambient operating limits. If
limits are exceeded, the unit will automatically lock the
compressor out of operation. Manual reset will be required
to restart the compressor.
INSTALLATION
Step 1 — Provide Unit Support
ROOF CURB — Assemble and install accessory roof curb or
horizontal adapter roof curb in accordance with instructions
shipped with the curb or horizontal adapter. Accessory roof
curb and horizontal adapter roof curb and information required
to field fabricate a roof curb or horizontal adapter roof curb are
shown in Fig. 1 and 2. Install insulation, cant strips, roofing
felt, and counter flashing as shown. Ductwork can be secured
to roof curb or horizontal adapter roof curb before unit is set in
place.
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 004-826
Printed in U.S.A.
Form 48TJ-C5SI
Pg 1
4-06
Replaces: 48TJ-C4SI
Book 1 4
Tab 1a 6a
2
CRRFCURB010A00
CRRFCURB011A00
CRRFCURB012A00
PKG. NO. REF.
CURB
HEIGHT
1′− 2″ (305)
2′- 0″ (610)
2′- 0″ (610)
DESCRIPTION
Fig. 1 — Roof Curb Details
Standard Curb 14″ (356) High
Standard Curb for Units Requiring High Installation
Side Supply and Return Curb for High Installation
linear m (± 1/16 in. per linear ft) in any direction. See Fig. 3 for
additional information. Unit rigging weight is shown in Fig. 3.
Unit operating weight is shown in Tables 1A and 1B.
Four lifting holes are provided in ends of unit base rails as
shown in Fig. 3-5. Refer to rigging instructions on unit.
POSITIONING — Maintain clearance, per Fig. 4 and 5,
around and above unit to provide minimum distance from
combustible materials, proper airflow, and service access.
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 per NFGC, (National Fuel Gas Code),
ANSI (American National Standards Institute) Z223.1, latest
revision and Addendum Z223.1A-1987, latest revision,
(U.S.A. Standards).
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
Locate mechanical draft system flue assembly at least
1219 mm (4 ft) from any opening through which combustion
products could enter the building, and at least 1219 mm (4 ft)
from any adjacent building. When unit is located adjacent to
public walkways, flue assembly must be at least 2134 mm
(7 ft) above grade.
ROOF MOUNT — Check building codes for weight distribution requirements.
IMPORTANT: The gasketing of the unit to the roof curb or
horizontal adapter roof curb is critical for a watertight seal.
Install gasket supplied with the roof curb or horizontal
adapter roof curb as shown in Fig. 1 and 2. Improperly
applied gasket can result in air leaks and poor unit
performance.
Curb or horizontal adapter roof curb should be level. This is
necessary to permit unit drain to function properly. Unit leveling tolerance is ± 5 mm per linear m (± 1/16 in. per linear ft) in
any direction. Refer to Accessory Roof Curb or Horizontal
Adapter Roof Curb Installation Instructions for additional
information as required.
ALTERNATE UNIT SUPPORT — When the curb or horizontal adapter roof curb cannot be used, support unit with
sleepers using unit curb or adapter roof curb support area. If
sleepers cannot be used, support long sides of unit with a minimum of 3 equally spaced 100 mm x 100 mm (4 in. x 4 in.) pads
on each side.
Step 2 — Rig and Place Unit — Inspect unit for
transportation damage. File any claim with transportation
agency. Keep unit upright, and do not drop. Use bumper boards
for spreader bars over unit to prevent sling or cable damage.
Rollers may be used to move unit across a roof. Level by using
unit frame as a reference; leveling tolerance is ± 5 mm per
3 1/2"
(89)
2" (51) X 1/4 (6)
SUPPORT TYP.
STITCH WELDED
FULLY INSULATED
SUPPLY PLENUM
1" (25) INSULATION
1 1/2 # (0.68kg) DENSITY,
STICK PINNED & GLUED
14 3/4"
(375)
NOTE: CRRFCURB013A00 is a fully factory preassembled horizontal adapter and includes an insulated transition duct. The
pressure drop through the adapter curb is negligible. Power
exhaust and barometric relief accessory are not available with
horizontal adapter.
For Horizontal return applications: The power exhaust and
barometric relief dampers must be installed in the return air duct.
23"
(584)
6"
(152)
12" (305) WIDE STANDING
SEAM PANELS
ACCESSORY
PACKAGE NO.
CRRFCURB013A00
Fig. 2 — Horizontal Adapter Installation
3
CURB
HEIGHT
1′-11″
(584)
DESCRIPTION
Pre-Assembled Horizontal
Adapter Roof Curb
UNIT
48TJ
016
024
028
DIMENSIONS
MAXIMUM
SHIPPING WEIGHT
Lb
2320
2500
2650
A
Kg
1052
1134
1202
Ft-in.
6-111/2
6-111/2
6-111/2
B
mm
2121
2121
2121
Ft-in.
4-0
3-4
3-4
mm
1219
1016
1016
NOTES:
1. Dimensions in ( ) are in millimeters.
2. Refer to Tables 1A and 1B for unit operating weights.
3. Remove boards at ends of unit and runners prior to rigging.
4. Rig by inserting hooks into unit base rails as shown. Use corner
post from packaging to protect coil from damage. Use bumper
boards for spreader bars.
5. Weights do not include optional EconoMi$erIV. EconoMi$erIV
weight is 41 kg (90 lb).
6. Weights given are for aluminum evaporator and condenser coil
plate fins. Add 68 kg (150 lb) for copper condenser coil. Add
127 kg (280 lb) for copper condenser and evaporator coils.
All panels must be in place when rigging.
Fig. 3 — Rigging Details
4
NOTES:
1. Refer to print for roof curb accessory
dimensions.
2. Dimensions in ( ) are in millimeters.
3.
4.
Center of Gravity.
Direction of airflow.
5. Ductwork to be attached to accessory roof
curb only.
6. Minimum clearance:
• Rear, 7′-0″ (2134) for coil removal. This
dimension can be reduced to 4′-0″ (1219)
if conditions permit coil removal from the
top.
• Left side: 4′-0″ (1219) for proper condenser coil airflow.
• Front, 4′-0″ (1219) for control box access.
• Right side: 4′-0″ (1219) for proper operation of damper and power exhaust if so
equipped.
• Top, 6′-0″ (1829) to assure proper condenser fan operation.
• Local codes or jurisdiction may prevail.
7. With the exception of clearance for the condenser coil and the damper/power exhaust
as stated in Note no. 6, a removable fence
or barricade requires no clearance.
8. Dimensions are from outside of corner
post. Allow 0′-5/16″ (8) on each side for top
cover drip edge.
STD. UNIT ECONOMIZER CORNER CORNER CORNER CORNER DIM A DIM B DIM C
WEIGHT
WEIGHT
A
B
C
D
ft-in. (mm)
1710 lb
90 lb
414 lb
380 lb
438 lb
479 lb
3-3
3-6
1-8
48TJ016
776 kg
41 kg
188 kg
172 kg
199 kg
217 kg
(991) (1067) (508)
UNIT
Fig. 4 — Base Unit Dimensions; 48TJ016
5
LEGEND
KO — Knockout
NOTES:
1. Refer to print for roof curb accessory dimensions.
2. Dimensions in ( ) are in millimeters.
3.
4.
Center of Gravity.
Direction of airflow.
5. Ductwork to be attached to accessory roof curb
only.
6. Minimum clearance:
a. Rear, 7′-0″ (2134) for coil removal. This dimension can be reduced to 4′-0″ (1219) if conditions permit coil removal from the top.
b. Left side: 4′-0″ (1219) for proper condenser coil
airflow.
c. Front, 4′-0″ (1219) for control box access.
d. Right side: 4′-0″ (1219) for proper operation of
damper and power exhaust if so equipped.
e. Top, 6′-0″ (1829) to assure proper condenser
fan operation.
f. Local codes or jurisdiction may prevail.
7. With the exception of clearance for the condenser
coil and the damper/power exhaust as stated in
note no. 5, a removable fence or barricade requires
no clearance.
8. Dimensions are from outside of corner post. Allow
0′-5/16″ (8) on each side for top cover drip edge.
UNIT
48TJ
024
028
STD UNIT
WEIGHT
lb
kg
1951 885
2167 983
ECONOMIZER
WEIGHT
lb
90
90
kg
41
41
CORNER WEIGHT*
DIMENSIONS
B
C
D
A
B
lb
kg
lb
kg
lb
kg
lb
kg Ft-in. mm Ft-in. mm
445 202 426 193 541 245 538 244 3- 1 940
3-7 1092
463 210 430 195 584 265 623 283 2-11 889
3-6 1067
A
*Weights are for unit only (aluminum plate fins) and do not include options or crating.
Fig. 5 — Base Unit Dimensions, 48TJ024,028
6
Table 1A — Physical Data, 48TJ016-028 (SI)
UNIT SIZE 48TJ
NOMINAL CAPACITY (kW)
OPERATING WEIGHT (kg)
Base Unit
Economizer
MoistureMiser
COMPRESSOR
Quantity...Model (Ckt 1, Ckt 2)
Capacity Stages (%)
Number of Refrigerant Circuits
Oil (ml) (Ckt 1, Ckt 2)
REFRIGERANT TYPE
Expansion Device
Operating Charge (kg)
Circuit 1*
Circuit 2
CONDENSER COIL
028D,M/F,N
87.9
776
41
18.1
885
41
18.1
953
41
18.1
2...ZR108KC
50/50
2
3135
1...ZR16M3, 1...ZR125KC
55/45
2
4022, 3135
4.81
4.81
6.76
9.07
5.72
6.03
3
Cross-Hatched /8-in. Copper Tubes, Aluminum Lanced,
Aluminum Pre-Coated, or Copper Plate Fins
3...590
4...590
2.02
2.02
Propeller Type
Propeller Type
Propeller Type
(Standard)
(Standard)
(High-Static Special Order Option)
6700
6700
8600
2...762
2...762
2...762
0.75...17.9
0.75...17.9
3.73...17.9
3400
3400
7800
Cross-Hatched 3/8-in. Copper Tubes, Aluminum Lanced
or Copper Plate Fins, Face Split
3...590
4...590
1.63
1.63
Centrifugal Type
2...305 x 305
2...305 x 305
Belt
Belt
3776
4720
5.59
7.46
29.1
29.0
7.68
9.92
213T
215T
12.8-15.2
14.8-17.8
16.6-20.3
18.6-22.4
Ball
Ball
25.8
25.8
140/165
125/150
137/168
125/150
35
35
239
203
201
163.0
36.5
36.5
1...BX...1372
2...BX...1270
1...BX...1270
2...BX...1194
371-391
371-391
.47
.60
.62
.75
5
5
6
5
3
3
13.75
16.01
18.42
20.08
2...669
2.02
Propeller Type
(Standard)
6700
2...762
0.75...17.9
3400
Rows...Fins/m
Total Face Area (sq m)
EVAPORATOR FAN
Quantity...Size (mm)
Type Drive
Nominal L/s
Motor kW
Motor Nominal r/s
Maximum Continuous BkW
Motor Frame Size
Fan r/s Range
2...669
1.63
Low-Medium Static
High Static
Motor Bearing Type
Maximum Allowable r/s
Motor Pulley Pitch Diameter (mm)
Low-Medium Static
High Static
Nominal Motor Shaft Diameter (mm)
Fan Pulley Pitch Diameter (mm)
Nominal Fan Shaft Diameter (mm)
Belt, Quantity...Type...Length (mm)
Low-Medium Static
High Static
Low-Medium Static
High Static
Pulley Center Line Distance (mm)
Speed Change per Full Turn of
Movable Pulley Flange (r/s)
Movable Pulley Maximum Full Turns
From Closed Position
Factory Setting
Factory Speed Setting (r/s)
Stage 1
Stage 2
Stage 1
Stage 2
Efficiency (Steady State) (%)
Temperature Rise Range (C)
Manifold Pressure (kPa) (High Fire)
Natural Gas
Gas Valve Quantity
Gas Valve Pressure Range (kPa)
Field Gas Connection Size (mm)
HIGH-PRESSURE SWITCH (kPa)
Cutout
Reset (Auto.)
LOW-PRESSURE SWITCH (kPa)
Cutout
Reset (Auto.)
FREEZE PROTECTION THERMOSTAT (C)
Opens
Closes
ELECTRONIC PROTECTION MODULE
Cutout (ohms)
Reset (ohms)
OUTDOOR-AIR INLET SCREENS
Quantity...Size (mm)
Low-Medium Static
High Static
Low-Medium Static
High Static
Low-Medium Static
High Static
2...254 x 254
Belt
2832
2.76
28.8
3.17
56H
12.38-16.38
17.05-21.67
Ball
25.8
79/104
94/119
22
152
132
30
1...BX...1067
1...BX...1067
343-394
.80
.92
5
5
3.5
13.58
18.43
88
88
88
3.26/3.45
2.71
3.26/3.45
2.71
3.26/3.45
2.71
0.8
0.44
37.5/47.5
57.7/76.5
38.1/50.7
58.9/72.7
81
8-25/17-33
0.8
0.44
45.4/58.6
67.4/90.3
50.7/63.0
72.7/93.0
81
8-25/11-28
0.8
0.44
45.4/58.6
67.4/90.3
50.7/63.0
72.7/93.0
81
8-25/11-28
0.67
1
1.37-3.36
19
0.67
1
1.37-3.36
19
0.67
1
1.37-3.36
19
2951
2206
186
303
–1 ± 2
7±2
—
—
—
—
*Circuit 1 uses the lower portion of condenser coil and lower portion of evaporator coils,
and Circuit 2 uses the upper portion of both coils.
†Rollout switch is manual reset.
**The 48TJ028 units requires 50-mm industrial-grade filters capable of handling face
velocities of up to 3.2 m/s (such as American Air Filter no. 5700 or equivalent).
LEGEND
—
—
4500 ± 900
2750 ± 450
Cleanable
2...508 x 635 x 25
1...508 x 508 x 25
Throwaway**
4...508 x 508 x 50
4...406 x 508 x 50
RETURN-AIR FILTERS
Quantity...Size (mm)
LP
TXV
1...ZR19M3, 1...ZR16M3
60/40
2
4022, 4022
R-22
TXV
Nominal L/s
Quantity...Diameter (mm)
Motor BkW...r/s
Watts Input (Total)
EVAPORATOR COIL
LP Gas
024D,M/F,N
70.3
Scroll
Rows...Fins/m
Total Face Area (sq m)
CONDENSER FAN
FURNACE SECTION
Rollout Switch Cutout
Temp (C)†
Burner Orifice Diameter (mm)
Natural Gas
LP Gas
Thermostat Heat Anticipator
Setting (amps)
400 V Stage 1
Stage 2
Gas Input (kW)
Natural Gas
016D,M/F,N
52.8
Liquid Propane
Thermostatic Expansion Valve
7
Table 1B — Physical Data, 48TJ016-028 (English)
UNIT SIZE 48TJ
NOMINAL CAPACITY (tons)
OPERATING WEIGHT (lbs)
Base Unit
Economizer
MoistureMiser
COMPRESSOR
Quantity...Model (Ckt 1, Ckt 2)
Capacity Stages (%)
Number of Refrigerant Circuits
Oil (oz) (Ckt 1, Ckt 2)
REFRIGERANT TYPE
Expansion Device
Operating Charge (lb-oz)
Circuit 1*
Circuit 2
CONDENSER COIL
016D,M/F,N
15
024D,M/F,N
20
028D,M/F,N
25
1710
90
40
1951
90
40
2167
90
40
2...ZR108KC
50/50
2
106
10-10
10-10
Rows...Fins/in.
Total Face Area (sq ft)
CONDENSER FAN
2...17
21.7
Nominal Cfm
Quantity...Diameter (in.)
Motor Hp...Rpm
Watts Input (Total)
EVAPORATOR COIL
Rows...Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity...Size (in.)
Type Drive
Nominal Cfm
Motor Hp
Motor Nominal Rpm
Maximum Continuous Bhp
Motor Frame Size
Fan Rpm Range
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter (in.)
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Nominal Fan Shaft Diameter (in.)
Belt, Quantity...Type...Length (in.)
Pulley Center Line Distance (in.)
Speed Change per Full Turn of
Movable Pulley Flange (Rpm)
Movable Pulley Maximum Full Turns
From Closed Position
Factory Setting
Factory Speed Setting (Rpm)
FURNACE SECTION
Rollout Switch Cutout
Temp (F)†
Burner Orifice Diameter (in...drill size)
Natural Gas
LP Gas
Thermostat Heat Anticipator Setting (amps)
400 V Stage 1
Stage 2
Gas Input (Btuh) Natural Gas Stage 1
Stage 2
LP Gas
Stage 1
Stage 2
Efficiency (Steady State) (%)
Temperature Rise Range (F)
Manifold Pressure (in. wg) (High Fire)
Natural Gas
Gas Valve Quantity
Gas Valve Pressure Range
in. wg
psig
Field Gas Connection Size (in.-FPT)
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto.)
LOW-PRESSURE SWITCH (psig)
Cutout
Reset (Auto.)
FREEZE PROTECTION THERMOSTAT (F)
Opens
Closes
ELECTRONIC PROTECTION MODULE
Cutout (ohms)
Reset (ohms)
OUTDOOR-AIR INLET SCREENS
Quantity...Size (in.)
2...17
17.5
Low-Medium Static
High Static
Low-Medium Static
High Static
Low-Medium Static
High Static
Low-Medium Static
High Static
Low-Medium Static
High Static
Low-Medium Static
High Static
Low-Medium Static
High Static
2...10 x 10
Belt
6000
3.7
1438
4.25
56H
743-983
1023-1300
Ball
1550
3.1/4.1
3.7/4.7
7/
8
6.0
5.2
13/16
1...BX...42
1...BX...42
13.5-15.5
48
55
5
5
3.5
815
1106
14-14
20-0
12-10
13-5
3
Cross-Hatched /8-in. Copper Tubes, Aluminum Lanced,
Aluminum Pre-Coated, or Copper Plate Fins
3...15
4...15
21.7
21.7
Propeller Type
Propeller Type
(Standard)
(High-Static Special Order Option)
14,200
18,200
2...30
2...30
1...1075
5...1075
3400
7800
Cross-Hatched 3/8-in. Copper Tubes, Aluminum Lanced
or Copper Plate Fins, Face Split
3...15
4...15
17.5
17.5
Centrifugal Type
2...12 x 12
2...12 x 12
Belt
Belt
8000
10,000
7.5
10
1455
1450
10.3
13.3
213T
215T
769- 909
888-1069
994-1216
1114-1341
Ball
Ball
1550
1550
5.5/6.5
4.9/5.9
5.4/6.6
4.9/5.9
13/8
13/8
10.4
8.0
7.9
6.4
17/16
17/16
1...BX...54
2...BX...50
1...BX...50
2...BX...47
14.6-15.4
14.6-15.4
28
36
37
45
5
5
6
5
3
3
825
960
1105
1205
190
190
190
0.1285...30/0.136...29
0.1065...36
0.1285...30/0.136...29
0.1065...36
0.8
0.44
128,000/162,000
197,000/261,000
130,000/173,000
201,000/248,000
81
15-45/30-60
0.8
0.44
155,000/200,000
230,000/308,000
173,000/215,000
248,000/320,000
81
15-45/20-50
2.7
1
2.7
1
0.8
0.44
155,000/200,000
230,000/308,000
173,000/215,000
248,000/320,000
81
15-45/20-50
2.7
1
5.5-13.5
0.199-0.487
3/4
5.5-13.5
0.199-0.487
3/4
5.5-13.5
0.199-0.487
3/4
426
320
27
44
30 ± 5
45 ± 5
—
—
—
—
4500 ± 900
2750 ± 450
Cleanable
2...20 x 25 x 1
1...20 x 20 x 1
Throwaway**
4...20 x 20 x 2
4...16 x 20 x 2
*Circuit 1 uses the lower portion of condenser coil and lower portion of evaporator coils,
and Circuit 2 uses the upper portion of both coils.
†Rollout switch is manual reset.
**The 48TJ028 units requires 2-in. industrial-grade filters capable of handling face velocities of up to 625 ft/min (such as American Air Filter no. 5700 or equivalent).
LEGEND
—
—
—
1...ZR19M3, 1...ZR16M3
60/40
2
136, 136
0.1285...30/0.136...29
0.1065...36
RETURN-AIR FILTERS
Quantity...Size (in.)
Bhp
LP
TXV
Scroll
1...ZR16M3, 1...ZR125KC
55/45
2
136, 106
R-22
TXV
Brake Horsepower
Liquid Propane
Thermostatic Expansion Valve
8
Step 3 — Field Fabricate Ductwork — Secure all
ducts to building structure. Use flexible duct connectors between unit and ducts as required. 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.
576
(1’-10 11/16”) MAX.
310
(1’-0 3/16”)
1757
(5’-9 3/16”) MAX.
1890
(6’-2 3/8”) MAX.
132
(5 3/16”)
1392
(4’-6 13/16”)
506
(1’-7 15/16”)
310
(1’-0 3/16”)
B
610
(24”) MIN.
For vertical supply and return units, tools or part could
drop into ductwork and cause an injury. Install a 90-degree
turn in the return ductwork between the unit and the conditioned space. If a 90-degree elbow cannot be installed, then
a grille of sufficient strength and density should be installed
to prevent objects from falling into the conditioned space.
B’
A
A’
BAFFLE
Shaded area indicates block-off panels.
Step 4 — Make Unit Duct Connections — Unit is
shipped for through-the-bottom duct connections. Ductwork
openings are shown in Fig. 6. Field-fabricated concentric ductwork may be connected as shown in Fig. 7 and 8. See Fig. 2 for
horizontal supply/return connections. Attach all ductwork to
roof curb and roof curb basepans. Refer to installation instructions shipped with accessory roof curb for more information.
NOTES:
1. Dimension A, A′ and B, B′ are obtained from field-supplied ceiling
diffuser.
2. Dimensions are in millimeters.
Fig. 8 — Concentric Duct Details
Step 5 — Install Flue Hood and Wind Baffle —
Flue hood and wind baffle are shipped secured under main
control box. To install, secure flue hood to access panel. See
Fig. 9. The wind baffle is then installed over the flue hood.
NOTE: When properly installed, flue hood will line up with
combustion fan housing. See Fig. 10.
WIND
BAFFLE
NOTE: Do not drill in this area, as damage to basepan may result in
water leak.
Fig. 6 — Air Distribution — Thru-the-Bottom
Fig. 9 — Flue Hood Location
NOTE: Do not drill in this area, as damage to basepan may result in
water leak.
Fig. 7 — Concentric Duct Air Distribution
9
INDUCED DRAFT
MOTOR
COMBUSTION
FAN HOUSING
MAIN BURNER
SECTION
19
DRAIN
19(3/4”)
FPT FPT
DRAIN
CONNECTION
CONNECTION
HEAT EXCHANGER
SECTION
35 (1-3/8")
DRAIN HOLE
NOTE: Dimensions are in millimeters.
Fig. 10 — Combustion Fan Housing Location
Fig. 11 — Condensate Drain Details
Step 6 — Trap Condensate Drain — See Fig. 4, 5,
and 11 for drain location. Plug is provided in drain hole and
must be removed when unit is operating. One 19-mm (3/4-in.)
FPT is provided inside unit evaporator section for condensate
drain connection. A 216-mm x 19-mm (81/2-in. x 3/4-in.) diameter nipple and a 51-mm x 19-mm (2-in. x 3/4-in.) diameter pipe
nipple are coupled to a standard 19-mm (3/4-in.) diameter
elbow to provide a straight path down through holes in unit
base rails (see Fig. 12). A trap at least 100 mm (4 in.) deep
must be used. If only one drain connection is trapped, other
connection must be plugged.
Step 7 — Orifice Change — This unit is factory assembled for heating operation using natural gas at an elevation
from sea level to 610 m (2000 ft). This unit uses orifice type
LH32RFnnn, where “nnn” indicates the orifice size based on
drill size diameter in thousands of an inch.
HIGH ELEVATION (Above 610 m [2000 ft]) — Use accessory high altitude kit when installing this unit at an elevation of
610 to 2134 m (2000 to 7000 ft). For elevations above 2134 m
(7000 ft), refer to Table 2 to identify the correct orifice size for
the elevation. See Table 3 for the number of orifices required
for each unit size. Purchase these orifices from your local
Carrier dealer. Follow instructions in accessory Installation
Instructions to install the correct orifices.
CONVERSION TO LP (Liquid Propane) GAS — Use accessory LP gas conversion kit when converting this unit for use
with LP fuel usage for elevations up to 2134 m (7000 ft). For
elevations above 2134 m (7000 ft), refer to Table 4 to identify
the correct orifice size for the elevation. See Table 3 for the
number of orifices required for each unit size. Purchase these
orifices from your local Carrier dealer. Follow instructions in
accessory Installation Instructions to install the correct orifices.
Fig. 12 — Condensate Drain Piping Details
Table 3 — Orifice Quantity
UNIT
48TJD016
48TJF016
48TJD024
48TJD028
48TJF024
48TJF028
m
0-914
914-2134
2134-2743
2743-3048
above 3048
ft
0-3,000
3,000- 7,000
7,000- 9,000
9,000-10,000
above 10,000
6
7
Table 4 — LP Gas Conversion*
ELEVATION
m
0-610
610
914
1219
1524
1829
2134
2429
2743
3048
Table 2 — Altitude Compensation*
ELEVATION
ORIFICE QUANTITY
5
NATURAL GAS ORIFICE SIZE†
Low Heat
High Heat
mm in. ...drill size mm in. ...drill size
3.26 0.1285...30 3.45 0.1360...29
3.05 0.1200...31 3.26 0.1285...30
2.95 0.1160...32 3.05 0.1200...31
2.87 0.1130...33 3.05 0.1200...31
2.79 0.1100...35 2.95 0.1160...32
ft
0-2,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
mm
2.71
2.64
2.58
2.58
2.53
2.49
2.44
2.44
2.37
2.26
LP GAS ORIFICE SIZE†
Low and High Heat
in. ...drill size
0.1065...36
0.1040...37
0.1015...38
0.1015...38
0.0995...39
0.0980...40
0.0960...41
0.0960...41
0.0935...42
0.0890...43
*Includes a 4% input reduction per each 304.8 m (1,000 feet).
†Orifices available through your Carrier Dealer.
*Includes a 4% input reduction per each 304.8 m (1,000 feet).
†Orifices available through your Carrier Dealer.
10
Step 8 — Install Gas Piping — Unit is equipped for
use with natural gas. Installation must conform with local
building codes or, in the absence of local codes, with the
National Fuel Gas Code, ANSI Z223.1.
Install field-supplied manual gas shutoff valve with a 3 mm
(1/8-in.) NPT pressure tap for test gage connection at unit. Field
gas piping must include sediment trap and union. See Fig. 13.
Do not pressure test gas supply while connected to unit.
Always disconnect union before servicing.
IMPORTANT: Natural gas pressure at unit gas connection
must not be less than 1.37 kPa (5.5 in. wg) or greater than
3.24 kPa (13.0 in. wg).
Fig. 13 — Field Gas Piping
Size gas-supply piping for 0.12 kPa (0.5-in. wg) maximum
pressure drop. Do not use supply pipe smaller than unit gas
connection.
Step 9 — Make Electrical Connections
FIELD POWER SUPPLY — Unit is factory wired for voltage shown on nameplate. Units are provided with terminal
block.
When installing units, provide a disconnect of adequate size
per local ordinances and codes (see Table 5).
All field wiring must comply with local requirements.
Route power lines through control box end panel or unit
basepan (Fig. 4 and 5) to terminal connections as shown on
unit wiring diagram and Fig. 14.
Operating voltage to compressor must be within voltage
range indicated on unit nameplate. Voltages between phases
must be balanced within 2% and the current must be balanced
within 10%.
AWG
EQUIP
GND
TB
—
—
—
—
LEGEND
American Wire Gage
Equipment
Ground
Terminal Block
NOTE: The maximum wire size for TB1 is 70 mm2 (2/0 AWG).
Fig. 14 — Field Power Wiring Connections
The correct power phasing is critical in the operation of the
scroll compressors. An incorrect phasing will cause the
compressor to rotate in the wrong direction. This may lead
to premature compressor failure.
Table 5 — Electrical Data, 48TJ016-028
NOMINAL
VOLTAGE
(3 Ph 50 Hz)
UNIT
48TJ
VOLTAGE
RANGE
Min
Max
COMPRESSOR
No. 1
No. 2
RLA
LRA
RLA
LRA
OFM
Qty
Hp
POWER
EXHAUST
IFM
FLA
(ea)
Hp
FLA
LRA
FLA
MCA
MOCP*
—
4.7
—
10.5
4.7
—
4.7
—
10.5
—
10.5
—
0.3
0.3
0.3
0.3
0.3
0.3
0.3
47
52
63
68
72
77
80
60
60
80
80
90
100
100
4.7
10.5
0.3
85
100
400
360
440
15.5
111
15.5
111
2
1.0
3.4
3.7
5.4
024
400
360
440
21.8
167
17.2
118
2
1.0
3.4
7.5
12.1
028
(Standard)
400
360
440
23.7
198
21.8
167
2
1.0
3.4
10.0
14.0
028
(High-Static
Fan)
400
360
440
23.7
198
21.8
167
2
5.0
7.3
10.0
14.0
—
—
—
—
—
—
—
—
—
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code, U.S.A.
Outdoor (Condenser) Fan Motor
Rated Load Amps
POWER
SUPPLY
FLA
016
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
OFM
RLA
COMBUSTION
FAN MOTOR
NOTE: In compliance with NEC requirements (U.S.A. Standard) for multimotor and combination load equipment (refer to NEC Articles 430 and
440), the overcurrent protective device for the unit shall be fuse or HACR
breaker.
*Fuse or HACR circuit breaker.
11
and will require a junction box and splice at the thermostat.
See Table 6 for American/European wire conversions.
Refer to accessory remote control instructions as required.
Use the following formula to determine the percent voltage
imbalance.
= 100 x
max voltage deviation from average voltage
average voltage
Table 6 — American/European Wire Conversions
Example: Supply voltage is 400-3-50.
AB = 393 v
BC = 403 v
AC = 396 v
AMERICAN
Industry Standard
American Conversion
Size
Size (mm2)
18 AWG
0.82
16 AWG
1.30
14 AWG
2.08
12 AWG
3.30
10 AWG
5.25
8 AWG
6.36
6 AWG
13.29
4 AWG
21.14
3 AWG
26.65
2 AWG
33.61
1 AWG
42.39
1/0 AWG
53.49
2/0 AWG
67.42
3/0 AWG
85.00
4/0 AWG
107.19
250 kcmil
126.64
300 kcmil
151.97
350 kcmil
177.90
400 kcmil
202.63
500 kcmil
253.29
600 kcmil
303.95
393 + 403 + 396
3
Average Voltage =
1192
3
= 397
Determine maximum deviation from average voltage:
(AB) 397 – 393 = 4 v
(BC) 403 – 397 = 6 v
(AC) 397 – 396 = 1 v
Maximum deviation is 6 v.
Determine percentage of voltage imbalance:
=
% Voltage Imbalance
= 100 x
6
397
AWG
kcmil
= 1.5%
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
Unit failure as a result of operation on improper line voltage
or excessive phase imbalance constitutes abuse and may cause
damage to electrical components.
FIELD CONTROL WIRING — Install a Carrier-approved
accessory thermostat assembly according to the installation instructions included with the accessory. Locate thermostat
assembly on a solid wall in the conditioned space to sense average temperature.
Route thermostat cable or equivalent single leads of
1.0 mm2 (no. 18 AWG [American Wire Gage, U.S.A.]) colored
wire from subbase terminals through conduit in unit to lowvoltage connections as shown on unit label wiring diagram and
in Fig. 15.
NOTE: For wire runs up to 15 m (50 ft), use 1.0 mm2
(no. 18 AWG) insulated wire (35 C minimum). For 15 to 23 m
(50 to 75 ft), use 1.5 mm2 (no. 16 AWG) insulated wire (35 C
minimum). For over 23 m (75 ft), use 2.5 mm2 (no. 14 AWG)
insulated wire (35 C minimum). All wire larger than 1.0 mm2
(no. 18 AWG) cannot be directly connected to the thermostat
THERMOSTAT ASSEMBLY
REMOVABLE JUMPER
Y2
W1
W2
G
C
Y1
Y2
W1
W2
G
C
X
PNK
ORN
VIO
BLK
BRN
WHT
L
Y1
BLU
RED
R
RC
LEGEND
— American Wire Gage, U.S.A. Standard
— Thousand Circular Mils
OPTIONAL NON-FUSED DISCONNECT — On units with
the optional non-fused disconnect, incoming power will be
wired into the disconnect switch. Refer to Fig. 16 for wiring
for 100 and 200 amp disconnect switches. Units with an
MOCP (maximum overcurrent protection) under 100 will use
the 100 amp disconnect switch. Units with an MOCP over 100
will use the 200 amp disconnect switch. Refer to the applicable
disconnect wiring diagram.
To prevent breakage during shipping, the disconnect handle
and shaft are shipped and packaged inside the unit control box.
Install the disconnect handle before unit operation. To install
the handle and shaft, perform the following procedure:
1. Open the control box door and remove the handle and
shaft from shipping location.
2. Loosen the Allen bolt located on the disconnect switch.
The bolt is located on the square hole and is used to hold
the shaft in place. The shaft cannot be inserted until the
Allen bolt is moved.
3. Insert the disconnect shaft into the square hole on the disconnect switch. The end of the shaft is specially cut and
the shaft can only be inserted in the correct orientation.
4. Tighten the Allen bolt to lock the shaft into position.
5. Close the control box door.
6. Attach the handle to the external access door with the two
screws provided. When the handle is in the ON position,
the handle will be vertical. When the handle is in the OFF
position, the handle will be horizontal.
7. Turn the handle to the OFF position and close the door.
The handle should fit over the end of the shaft when the
door is closed.
8. The handle must be in the OFF position to open the control box door.
OPTIONAL CONVENIENCE OUTLET — On units with
optional convenience outlet, a 115-v GFI (ground fault interrupt) convenience outlet receptacle is provided for field wiring.
Field wiring should be run through the 7/8-in. knockout provided in the basepan near the return air opening.
IMPORTANT: If the supply voltage phase imbalance is
more than 2%, contact your local electric utility company
immediately.
RH
EUROPEAN
Industry Standard
Size (mm2)
1.0
1.5
2.5
4.0
6.0
10.0
16.0
25.0
—
35.0
50.0
—
70.0
95.0
120.0
150.0
—
185.0
240.0
300.0
—
X
UNIT LOW VOLTAGE CONNECTIONS
Fig. 15 — Field Control Thermostat Wiring
12
NOTE: The hood top panel, upper and lower filter retainers,
hood drain pan, baffle (sizes 024-028), and filter support
bracket are secured opposite the condenser end of the unit. The
screens, hood side panels, remaining section of filter support
bracket, seal strip, and hardware are in a package located
inside the return-air filter access panel (Fig. 18).
1. Attach seal strip to upper filter retainer. See Fig. 19.
2. Assemble hood top panel, side panels, upper filter retainer, and drain pan (see Fig. 20).
3. Secure lower filter retainer and support bracket to unit.
See Fig. 20. Leave screws loose on 024 and 028 units.
4. Slide baffle (sizes 024 and 028) behind lower filter retainer and tighten screws.
5. Loosen sheet metal screws for top panel of base unit
located above outdoor-air inlet opening, and remove
screws for hood side panels located on the sides of the
outdoor-air inlet opening.
6. Match notches in hood top panel to unit top panel screws.
Insert hood flange between top panel flange and unit.
Tighten screws.
7. Hold hood side panel flanges flat against unit, and install
screws removed in Step 5.
8. Insert outdoor-air inlet screens and spacer in channel created by lower filter retainer and filter support bracket.
9. Attach remaining section of filter support bracket.
6T3 4T2 2T1 LOAD
5L3 3L2 1L1 LINE
NOTE: The disconnect takes the place of TB-1 as shown on the
unit wiring diagram label and the component arrangement label.
Fig. 16 — Optional Non-Fused Disconnect Wiring
Step 10 — Make Outdoor-Air Inlet Adjustments
MANUAL OUTDOOR-AIR DAMPER — All units (except
those equipped with a factory-installed economizer) have a
manual outdoor-air damper to provide ventilation air.
Damper can be preset to admit up to 25% outdoor air into
return-air compartment. To adjust, loosen securing screws and
move damper to desired setting, then retighten screws to secure
damper (Fig. 17).
Fig. 18 — Outdoor-Air Hood Component Location
Fig. 17 — Standard 25% Outdoor-Air
Section Details
Step 11 — Install Outdoor-Air Hood
IMPORTANT: If the unit is equipped with an optional
EconoMi$erIV component, move the outdoor air temperature sensor prior to installing the outdoor-air hood. See the
Optional EconoMi$erIV section.
The outdoor-air hood is common to 25% air ventilation and
EconoMi$erIV. If EconoMi$erIV is used, all electrical connections have been made and adjusted at the factory. Assemble
and install hood in the field.
Fig. 19 — Seal Strip Location
13
Table 7B — Outdoor Air Damper Leakage (Cfm)
BAFFLE
LEAKAGE (cfm)
LOWER FILTER
RETAINER
DAMPER STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
1.2
35
53
65
75
90
102
Table 8A — Return Air Pressure Drop (Pa)
L/s
FILTER SUPPORT
BRACKET
2125
10
2395
12
2550
15
2830
17
3400
22
3540
25
Table 8B — Return Air Pressure Drop (in. wg)
CFM
4500 5000 5400 6000 7200 7500 9000 10,000 11,250
0.040 0.050 0.060 0.070 0.090 0.100 0.110 0.120 0.140
HOOD SIDE
PANELS (2)
HOOD TOP
PANEL
ECONOMI$ERIV STANDARD SENSORS
Outdoor Air Temperature (OAT) Sensor — The outdoor air
temperature sensor (HH57AC074) is a 10 to 20 mA device
used to measure the outdoor-air temperature. The outdoor-air
temperature is used to determine when the EconoMi$erIV can
be used for free cooling. The sensor must be relocated. See
Fig. 21. The operating range of temperature measurement is 40
to 100 F.
BAFFLE
(024 TO
028 ONLY)
LOWER
FILTER
RETAINER
FILTER SUPPORT
BRACKET
HOOD DRAIN PAN
SCREWS ECONOMI$ERIV
UPPER FILTER RETAINER
OUTDOOR AIR
TEMPERATURE SENSOR
FRAME
(INSTALLED OPERATION
TOP SCREWS POSITION)
Fig. 20 — Outdoor-Air Hood Details
Step 12 — Adjust Factory-Installed Options
LOW TEMPERATURE
COMPRESSOR
LOCKOUT SWITCH
OPTIONAL ECONOMI$ERIV — See Fig. 21 and 22 for
EconoMi$erIV component locations.
NOTE: These instructions are for installing the optional
EconoMi$erIV only. Refer to the accessory EconoMi$erIV
installation instructions when field installing an EconoMi$erIV
accessory.
To complete installation of the optional EconoMi$erIV, perform the following procedure.
1. Remove the EconoMi$erIV hood. Refer to Step 11 —
Install Outdoor-Air Hood on page 13 for information on
removing and installing the outdoor-air hood.
2. Relocate outdoor air temperature sensor from shipping
position to operation position on EconoMi$erIV. See
Fig. 21.
Fig. 21 — EconoMi$erIV Component Locations
SUPPLY AIR
TEMPERATURE SENSOR
LOCATION
IMPORTANT: Failure to relocate the sensor will result
in the EconoMi$erIV not operating properly.
ECONOMI$ERIV
3. Re-install economizer hood.
4. Install all EconoMi$erIV accessories. EconoMi$erIV
wiring is shown in Fig. 23.
Outdoor air leakage is shown in Tables 7A and 7B. Return
air pressure drop is shown in Tables 8A and 8B.
ACTUATOR
TR1
TR
24
24
Vac
HOT
EXH
Set
1
4
n
P
T1
5
Min
Pos
EXH
P1
Ope
3
DCV
Max
T
EF1
10V
EF
2V
DCV
Set
DCV
10V
AQ
2V
SO+
C
Free l
Coo B
SO
SR+
SR
D
A
FLANGE
AND SCREWS
(HIDDEN)
Table 7A — Outdoor Air Damper Leakage (L/s)
LEAKAGE (L/s)
_
2
2V
N
AQ1
50
16
Vac
COM
+
10V
N1
CONTROLLER
DAMPER STATIC PRESSURE (Pa)
100
150
200
250
300
25
31
35
42
48
Fig. 22 — EconoMi$erIV Component Locations
(Side View)
14
LEGEND
DCV — Demand Controlled Ventilation
IAQ — Indoor Air Quality
LALS — Low Temperature Compressor
Lockout Switch
OAT — Outdoor-Air Temperature
POT — Potentiometer
Potentiometer Default Settings:
Power Exhaust Middle
Minimum Pos.
Fully Closed
DCV Max.
Middle
DCV Set
Middle
Enthalpy
C Setting
NOTES:
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential
enthalpy or dry bulb.
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power
supply, it cannot have the secondary of the transformer grounded.
3. For field-installed remote minimum position POT, remove black wire jumper
between P and P1 and set control minimum position POT to the minimum
position.
Fig. 23 — EconoMi$erIV Wiring
Table 9 — Supply Air Sensor Temperature/
Resistance Values
Supply Air Temperature (SAT) Sensor — The supply air
temperature sensor is a 3 K thermistor located at the inlet of the
indoor fan. See Fig. 22. This sensor is factory installed. The operating range of temperature measurement is 0° to 158 F. See
Table 9 for sensor temperature/resistance values.
The temperature sensor looks like an eyelet terminal with
wires running to it. The sensor is located in the “crimp end”
and is sealed from moisture.
Low Temperature Compressor Lockout Switch — The
EconoMi$erIV is equipped with an ambient temperature lockout switch located in the outdoor airstream which is used to
lock out the compressors below a 42 F ambient temperature.
See Fig. 21.
ECONOMI$ERIV CONTROL MODES — Determine the
EconoMi$erIV control mode before set up of the control. Some
modes of operation may require different sensors. Refer to
Table 10. The EconoMi$erIV is supplied from the factory with a
supply air temperature sensor, a low temperature compressor
lockout switch, and an outdoor air temperature sensor. This
allows for operation of the EconoMi$erIV with outdoor air dry
bulb changeover control. Additional accessories can be added to
allow for different types of changeover control and operation of
the EconoMi$erIV and unit.
TEMPERATURE
(C)
(F)
–50
–58
–40
–40
–30
–22
–20
–4
–10
14
0
32
10
50
20
68
25
77
30
86
40
104
50
122
60
140
70
158
80
176
85
185
90
194
100
212
110
230
120
248
125
257
130
266
140
284
150
302
15
RESISTANCE (ohms)
200,250
100,680
53,010
29,091
16,590
9,795
5,970
3,747
3,000
2,416
1,597
1,080
746
525
376
321
274
203
153
116
102
89
70
55
Table 10 — EconoMi$erIV Sensor Usage
Outdoor Air
Dry Bulb
Differential
Dry Bulb
Single Enthalpy
Differential
Enthalpy
CO2 for DCV
Control using a
Wall-Mounted
CO2 Sensor
CO2 for DCV
Control using a
Duct-Mounted
CO2 Sensor
ECONOMI$ERIV WITH OUTDOOR AIR
DRY BULB SENSOR
Accessories Required
None. The outdoor air dry bulb sensor
is factory installed.
CRTEMPSN002A00*
HH57AC078
HH57AC078
and
CRENTDIF004A00*
33ZCSENCO2
33ZCSENCO2†
and
33ZCASPCO2**
OR
APPLICATION
CRCBDIOX005A00††
*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on
many different base units. As such, these kits may contain parts that
will not be needed for installation.
†33ZCSENCO2 is an accessory CO2 sensor.
**33ZCASPCO2 is an accessory aspirator box required for ductmounted applications.
††CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2
and 33ZCASPCO2 accessories.
Fig. 24 — EconoMi$erIV Controller Potentiometer
and LED Locations
19
LED ON
18
D
17
Outdoor Dry Bulb Changeover — The standard controller is
shipped from the factory configured for outdoor dry bulb
changeover control. The outdoor air and supply air temperature
sensors are included as standard. For this control mode, the outdoor temperature is compared to an adjustable set point selected
on the control. If the outdoor-air temperature is above the set
point, the EconoMi$erIV will adjust the outdoor-air dampers to
minimum position. If the outdoor-air temperature is below the
set point, the position of the outdoor-air dampers will be controlled to provide free cooling using outdoor air. When in this
mode, the LED next to the free cooling set point potentiometer
will be on. The changeover temperature set point is controlled
by the free cooling set point potentiometer located on the
control. See Fig. 24. The scale on the potentiometer is A, B, C,
and D. See Fig. 25 for the corresponding temperature
changeover values.
Differential Dry Bulb Control — For differential dry bulb
control the standard outdoor dry bulb sensor is used in conjunction with an additional accessory return air sensor (part number
CRTEMPSN002A00). The accessory sensor must be mounted
in the return airstream. See Fig. 26.
In this mode of operation, the outdoor-air temperature is
compared to the return-air temperature and the lower temperature airstream is used for cooling. When using this mode of
changeover control, turn the free cooling/enthalpy set point
potentiometer fully clockwise to the D setting. See Fig. 24.
Outdoor Enthalpy Changeover — For enthalpy control, accessory enthalpy sensor (part number HH57AC078) is required. Replace the standard outdoor dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting
location. See Fig. 21. When the outdoor air enthalpy rises
above the outdoor enthalpy changeover set point, the outdoorair damper moves to its minimum position. The outdoor
enthalpy changeover set point is set with the outdoor enthalpy
set point potentiometer on the EconoMi$erIV controller. The
set points are A, B, C, and D. See Fig. 27. The factory-installed
620-ohm jumper must be in place across terminals SR and SR+
on the EconoMi$erIV controller. See Fig. 28.
Differential Enthalpy Control — For differential enthalpy
control, the EconoMi$erIV controller uses two enthalpy sensors (HH57AC078 and CRENTDIF004A00), one in the outside air and one in the return airstream on the EconoMi$erIV
frame. The EconoMi$erIV controller compares the outdoor air
enthalpy to the return air enthalpy to determine EconoMi$erIV
LED OFF
16
LED ON
C
mA
15
14
LED ON
LED OFF
B
13
12
LED OFF
LED ON
A
11
10
LED OFF
9
40
45
50
55
60
65 70 75 80
DEGREES FAHRENHEIT
85
90
95
100
Fig. 25 — Outside Air Temperature
Changeover Set Points
TR
1
TR
c
Va
24 M
CO
24
c
Va
T
HO
H
EX t
Se
_
+
V
10
N1
2
2V
N
P1
1
H
EX
en
Op
P
T1
T
4
V
DC x
Ma
3
EF
V
10
1
EF
2V
V
DC t
Se
V
DC
1
AQ
V
10
AQ
2V
+
SO
e
Fre ol
Co
SO
+
SR
SR
IAQ
SENSOR
5
Min s
Po
C
B
D
A
RETURN AIR
TEMPERATURE
OR ENTHALPY
SENSOR
Fig. 26 — Return Air Temperature or Enthalpy
Sensor Mounting Location
16
Indoor Air Quality (IAQ) Sensor Input — The IAQ input can
be used for demand control ventilation (DCV) control based on
the level of CO2 measured in the space or return air duct.
Mount the accessory IAQ sensor according to manufacturer
specifications. The IAQ sensor should be wired to the AQ and
AQ1 terminals of the controller. Adjust the DCV potentiometers to correspond to the DCV voltage output of the indoor air
quality sensor at the user-determined set point. See Fig. 29.
If a separate field-supplied transformer is used to power the
IAQ sensor, the sensor must not be grounded or the
EconoMi$erIV control board will be damaged.
use. The controller selects the lower enthalpy air (return or outdoor) for cooling. For example, when the outdoor air has a lower enthalpy than the return air and is below the set point, the
EconoMi$erIV opens to bring in outdoor air for free cooling.
Replace the standard outside air dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting
location. See Fig. 21. Mount the return air enthalpy sensor on
the EconoMi$erIV. See Fig. 26. When using this mode of
changeover control, turn the enthalpy set point potentiometer
fully clockwise to the D setting.
NOTE: Remove 620-ohm resistor if differential enthalpy sensor is installed.
46
85
90
95 100 105 110
(29) (32) (35) (38) (41) (43)
44
CONTROL CONTROL POINT
APPROX. °F (°C)
CURVE
AT 50% RH
42
80
(27)
36
75
(24)
RE
30
U
70
(21)
16
18
55
(13) B
12
14
50
(10)
40
(4)
70
50
A
30
20
60
(16)
40
22
60
24
65
(18)
80
10
0
90
8
EN
TH
AL
26 PY
—
2 BT
LA
TIV
32
PE
R
34
PO
UN
D
EH
UM
ID
DR
Y
ITY
38
AI
R
(%
)
40
73 (23)
70 (21)
67 (19)
63 (17)
A
B
C
D
C
20
D
45
(7)
10
35
(2)
B A
D C
35
(2)
40
(4)
45
(7)
50
(10)
55
60
65
70
75
80
85
90
95 100 105 110
(13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)
HIGH LIMIT
CURVE
APPROXIMATE DRY BULB TEMPERATURE— °F (°C)
Fig. 27 — Enthalpy Changeover Set Points
CO2 SENSOR MAX RANGE SETTING
EXH
N1
P
Min
Pos
T1
DCV
2V
AQ
SO
SR
+
Max
10V
1
_
2V
Free
Cool
B
2
5
DCV
SO+
SR+
24 Vac
COM
Open
T
AQ1
24
Vac
HOT
6000
Set
10V
2V
EXH
P1
TR1
RANGE CONFIGURATION (ppm)
N
TR
DCV
Set
10V
3
4
EF
EF1
5000
4000
800 ppm
900 ppm
1000 ppm
1100 ppm
3000
2000
1000
0
2
C
3
4
5
6
7
8
DAMPER VOLTAGE FOR MAX VENTILATION RATE
A
D
Fig. 29 — CO2 Sensor Maximum Range Setting
Fig. 28 — EconoMi$erIV Controller
17
Damper Movement — Damper movement from full open to
full closed (or vice versa) takes 21/2 minutes.
Thermostats — The EconoMi$erIV control works with conventional thermostats that have a Y1 (cool stage 1), Y2 (cool
stage 2), W1 (heat stage 1), W2 (heat stage 2), and G (fan). The
EconoMi$erIV control does not support space temperature
sensors. Connections are made at the thermostat terminal connection board located in the main control box.
Occupancy Control — The factory default configuration for
the EconoMi$erIV control is occupied mode. Occupied status
is provided by the black jumper from terminal TB2-9 to terminal TB2-10. When unoccupied mode is desired, install a fieldsupplied timeclock function in place of the jumper between
terminals TB2-9 and TB2-10. See Fig. 23. When the timeclock
contacts are closed, the EconoMi$erIV control will be in occupied mode. When the timeclock contacts are open (removing
the 24-v signal from terminal TB2-10), the EconoMi$erIV will
be in unoccupied mode.
Demand Controlled Ventilation (DCV) — When using the
EconoMi$erIV for demand controlled ventilation, there are
some equipment selection criteria which should be considered.
When selecting the heat capacity and cool capacity of the
equipment, the maximum ventilation rate must be evaluated for
design conditions. The maximum damper position must be calculated to provide the desired fresh air.
Typically the maximum ventilation rate will be about 5 to
10% more than the typical cfm required per person, using
normal outside air design criteria.
A proportional anticipatory strategy should be taken with
the following conditions: a zone with a large area, varied occupancy, and equipment that cannot exceed the required ventilation rate at design conditions. Exceeding the required ventilation rate means the equipment can condition air at a maximum
ventilation rate that is greater than the required ventilation rate
for maximum occupancy. A proportional-anticipatory strategy
will cause the fresh air supplied to increase as the room CO2
level increases even though the CO2 set point has not been
reached. By the time the CO2 level reaches the set point, the
damper will be at maximum ventilation and should maintain
the set point.
In order to have the CO2 sensor control the economizer
damper in this manner, first determine the damper voltage output for minimum or base ventilation. Base ventilation is the
ventilation required to remove contaminants during unoccupied periods. The following equation may be used to determine
the percent of outside-air entering the building for a given
damper position. For best results there should be at least a
10 degree difference in outside and return-air temperatures.
Exhaust Set Point Adjustment — The exhaust set point will
determine when the exhaust fan runs based on damper position
(if accessory power exhaust is installed). The set point is modified with the Exhaust Fan Set Point (EXH SET) potentiometer.
See Fig. 24. The set point represents the damper position above
which the exhaust fan will be turned on. When there is a call
for exhaust, the EconoMi$erIV controller provides a 45
± 15 second delay before exhaust fan activation to allow the
dampers to open. This delay allows the damper to reach the
appropriate position to avoid unnecessary fan overload.
Minimum Position Control — There is a minimum damper
position potentiometer on the EconoMi$erIV controller. See
Fig. 24. The minimum damper position maintains the minimum airflow into the building during the occupied period.
When using demand ventilation, the minimum damper position represents the minimum ventilation position for VOC
(volatile organic compound) ventilation requirements. The
maximum demand ventilation position is used for fully occupied ventilation.
When demand ventilation control is not being used, the
minimum position potentiometer should be used to set the occupied ventilation position. The maximum demand ventilation
position should be turned fully clockwise.
Adjust the minimum position potentiometer to allow the
minimum amount of outdoor air, as required by local codes, to
enter the building. Make minimum position adjustments with
at least 5.5° C (10° F) temperature difference between the outdoor and return-air temperatures.
To determine the minimum position setting, perform the
following procedure:
1. Calculate the appropriate mixed-air temperature using the
following formula:
OA
RA
) + (TR x
) = TM
(TO x
100
100
TO = Outdoor-Air Temperature
OA = Percent of Outdoor Air
TR = Return-Air Temperature
RA = Percent of Return Air
TM = Mixed-Air Temperature
As an example, if local codes require 10% outdoor air
during occupied conditions, outdoor-air temperature is
15.5 C (60 F), and return-air temperature is 23.9 C (75 F).
(15.5 x .10) + (23.9 x .90) = 23.1 C
2. Disconnect the supply-air sensor from terminals T and T1.
3. Ensure that the factory-installed jumper is in place across
terminals P and P1. If remote damper positioning is being
used, make sure that the terminals are wired according to
Fig. 23 and that the minimum position potentiometer is
turned fully clockwise.
4. Connect 24 vac across terminals TR and TR1.
5. Carefully adjust the minimum position potentiometer
until the measured mixed-air temperature matches the
calculated value.
6. Reconnect the supply-air sensor to terminals T and T1.
Remote control of the EconoMi$erIV damper is desirable
when requiring additional temporary ventilation. If a
field-supplied remote potentiometer (Honeywell part number
S963B1128) is wired to the EconoMi$erIV controller, the minimum position of the damper can be controlled from a remote
location.
To control the minimum damper position remotely, remove
the factory-installed jumper on the P and P1 terminals on the
EconoMi$erIV controller. Wire the field-supplied potentiometer to the P and P1 terminals on the EconoMi$erIV controller.
See Fig. 23.
(TO x
OA
RA
) + (TR x
) = TM
100
100
TO = Outdoor-Air Temperature
OA = Percent of Outdoor Air
TR = Return-Air Temperature
RA = Percent of Return Air
TM = Mixed-Air Temperature
Once base ventilation has been determined, set the minimum damper position potentiometer to the correct position.
The same equation can be used to determine the occupied or
maximum ventilation rate to the building. For example, an output of 3.6 volts to the actuator provides a base ventilation rate
of 5% and an output of 6.7 volts provides the maximum ventilation rate of 20% (or base plus 15 cfm per person). Use Fig. 29
to determine the maximum setting of the CO2 sensor. For example, a 1100 ppm set point relates to a 15 cfm per person design. Use the 1100 ppm curve on Fig. 29 to find the point when
the CO2 sensor output will be 6.7 volts. Line up the point on the
graph with the left side of the chart to determine that the range
18
configuration for the CO2 sensor should be 1800 ppm.
The EconoMi$erIV controller will output the 6.7 volts from the
CO2 sensor to the actuator when the CO2 concentration in the
space is at 1100 ppm. The DCV set point may be left at 2 volts
since the CO2 sensor voltage will be ignored by the
EconoMi$erIV controller until it rises above the 3.6 volt
setting of the minimum position potentiometer.
Once the fully occupied damper position has been determined, set the maximum damper demand control ventilation
potentiometer to this position. Do not set to the maximum position as this can result in over-ventilation to the space and potential high-humidity levels.
CO 2 Sensor Configuration — The CO2 sensor has preset
standard voltage settings that can be selected anytime after the
sensor is powered up. See Table 11.
Use setting 1 or 2 for Carrier equipment. See Table 11.
1. Press Clear and Mode buttons. Hold at least 5 seconds
until the sensor enters the Edit mode.
2. Press Mode twice. The STDSET Menu will appear.
3. Use the Up/Down button to select the preset number. See
Table 11.
4. Press Enter to lock in the selection.
5. Press Mode to exit and resume normal operation.
The custom settings of the CO2 sensor can be changed anytime after the sensor is energized. Follow the steps below to
change the non-standard settings:
1. Press Clear and Mode buttons. Hold at least 5 seconds
until the sensor enters the Edit mode.
2. Press Mode twice. The STDSET Menu will appear.
3. Use the Up/Down button to toggle to the NONSTD menu
and press Enter.
4. Use the Up/Down button to toggle through each of the
nine variables, starting with Altitude, until the desired setting is reached.
5. Press Mode to move through the variables.
6. Press Enter to lock in the selection, then press Mode to
continue to the next variable.
Dehumidification of Fresh Air with DCV Control — Information from ASHRAE indicates that the largest humidity load
on any zone is the fresh air introduced. For some applications,
a field-supplied energy recovery unit is added to reduce the
moisture content of the fresh air being brought into the building
when the enthalpy is high. In most cases, the normal heating
and cooling processes are more than adequate to remove the
humidity loads for most commercial applications.
If normal rooftop heating and cooling operation is not adequate for the outdoor humidity level, an energy recovery unit
and/or a dehumidification option should be considered.
Step 13 — Install All Accessories — After all the
factory-installed options have been adjusted, install all fieldinstalled accessories. Refer to the accessory installation instructions included with each accessory.
Step 14 — Install Humidistat for Optional
MoistureMiser — MositureMiser dehumidification package operation can be controlled by field installation of a
Carrier-approved humidistat. To install the humidistat perform
the following procedure:
1. Locate humidistat on a solid interior wall in the conditioned space. Location should be a well ventilated area
to sense average humidity.
2. Route thermostat cable or equivalent single leads of colored wire from humidistat terminals through conduit in
unit to the low voltage connection on the 2-pole terminal
strip (TB3) as shown in Fig. 30 and Fig. 31.
Table 11 — CO2 Sensor Standard Settings
OUTPUT
VENTILATION
RATE
(cfm/Person)
Proportional
Any
Proportional
Any
3
Exponential
Any
4
Proportional
15
Proportional
20
6
Exponential
15
7
Exponential
20
SETTING
EQUIPMENT
1
2
Interface w/Standard
Building Control System
5
Economizer
8
Health & Safety
Proportional
—
9
Parking/Air Intakes/
Loading Docks
Proportional
—
ANALOG
OUTPUT
0-10V
4-20 mA
2-10V
7-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
LEGEND
ppm — Parts Per Million
19
CO2
CONTROL RANGE
(ppm)
OPTIONAL
RELAY SETPOINT
(ppm)
RELAY
HYSTERESIS
(ppm)
0-2000
1000
50
0-2000
1000
50
0-2000
1100
50
0-1100
1100
50
0- 900
900
50
0-1100
1100
50
0- 900
900
50
0-9999
5000
500
0-2000
700
50
Fig. 30 — Typical MoistureMiser Dehumidification
Package Control Box
LEGEND
Circuit Breaker
Liquid Line Solenoid
Valve
LPS
— Low-Pressure Switch
TB
— Terminal Block
TRAN — Transformer
CB
—
LLSV —
Fig. 31 — Typical MoistureMiser Dehumidification Package
Humidistat Wiring Schematic
20
START-UP
Evaporator Fan — Fan belt and variable pulleys are
spring mounted. Do not loosen or remove compressor holddown bolts.
factory installed. Remove tape from the fan pulley. See
Tables 12A and 12B for air quantity limits. See Tables 13-24
for fan performance data. Be sure that fans rotate in the proper
direction. See Tables 25A-27 for static pressure information for
factory-installed options and field-installed accessories. See
Tables 28A and 28B for fan revolutions at various motor pulley
settings. See Fig. 32 for fan performance using horizontal
adapter. Refer to Table 29 for evaporator-fan motor performance. To alter fan performance, see Evaporator-Fan Performance Adjustment section on page 32.
Refrigerant Service Ports — Each refrigerant sys-
Table 12A — Air Quantity Limits (SI)
Use the following information and Start-Up Checklist on
page CL-1 to check out unit PRIOR to start-up.
Unit Preparation — Check that unit has been installed in
accordance with these installation instructions and all applicable codes.
Compressor Mounting — Compressors are internally
tem has a total of 3 Schrader-type service gage ports. One port
is located on the suction line, one on the compressor discharge
line, and one on the liquid line. In addition Schrader-type
valves are located underneath the low-pressure switches. Be
sure that caps on the ports are tight.
UNIT
48TJ
016
024
028
Compressor Rotation — It is important to be certain
the compressors are rotating in the proper direction. To determine whether or not compressors are 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 incoming power leads.
4. Turn on power to the compressor.
The suction and discharge pressure levels should now move
to their normal start-up levels.
NOTE: When compressors are rotating in the wrong direction,
the unit will have increased noise levels and will not provide
heating and cooling.
After a few minutes of reverse operation, the scroll
compressor internal overload protection will open, which will
activate the unit’s lockout and requires a manual reset. Reset is
accomplished by turning the thermostat on and off.
MINIMUM
COOLING
L/s
2125
2800
3300
MINIMUM
HEATING L/s
Low Heat
High Heat
1793
1793
2241
2572
2241
2572
MAXIMUM
L/s
3525
4800
5300
Table 12B — Air Quantity Limits (English)
UNIT
48TJ
016
024
028
MINIMUM
COOLING
CFM
4500
6000
7000
MINIMUM
HEATING CFM
Low Heat
High Heat
3800
3800
4750
5450
4750
5450
MAXIMUM
CFM
7,500
10,000
11,250
Condenser Fans and Motors — Fans and motors
are factory set. Refer to Condenser-Fan Adjustment section on
page 34 as required.
Return-Air Filters — Check that correct filters are installed in filter tracks. See Tables 1A and 1B. Do not operate
unit without return-air filters.
Outdoor-Air Inlet Screens — Outdoor-air inlet screens
must be in place before operating unit.
Gas Heat — Verify gas pressures before turning on heat as
follows:
1. Turn off manual gas stop.
2. Connect pressure gage to supply gas pressure tap.
3. Connect pressure gage to manifold pressure tap on gas
valve.
4. Turn on manual gas stop and set thermostat to HEAT position. After the unit has run for several minutes, verify
that incoming pressure is 1.37 kPa (5.5 in. wg) or greater,
and that the manifold pressure is 0.67 (2.7 in. wg) during
high fire operation. If manifold pressure must be adjusted,
refer to Gas Valve Adjustment section on page 35.
5. After unit has been in operation for 5 minutes, check temperature rise across the heat exchangers. See unit informative plate for correct rise limits of the heat supplied.
Air quantities may need to be adjusted to bring the actual
rise to within the allowable limits.
Internal Wiring — Check all electrical connections in
unit control boxes; tighten as required.
Crankcase Heater (Sizes 024,028 and Units
with MoistureMiser Dehumidification Package) — Heater is energized as long as there is power to unit
and compressor is not operating.
IMPORTANT: Unit power must be on for 24 hours prior to
start-up. Otherwise, damage to the compressor may result.
21
Table 13 — Fan Performance Data (SI) — 48TJD,M016* (Low Heat Units)
AIRFLOW
(L/s)
2124
2266
2408
2549
2691
2833
2974
3116
3257
3399
3541
r/s
50
BkW
kW
r/s
100
BkW
13.5
14.2
14.9
15.6
16.3
17.0
17.7
18.4
19.2
—
—
1.14
1.31
1.50
1.70
1.92
2.16
2.42
2.69
2.98
—
—
1.32
1.52
1.73
1.97
2.23
2.50
2.80
3.11
3.45
—
—
15.1
15.7
16.3
17.0
17.6
18.3
18.9
19.6
20.3
—
—
1.30
1.48
1.67
1.88
2.10
2.34
2.60
2.88
3.18
—
—
r/s
349
BkW
AIRFLOW
(L/s)
kW
r/s
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
149
199
kW
r/s
BkW
kW
r/s
BkW
kW
r/s
1.50
1.71
1.93
2.17
2.43
2.71
3.01
3.33
3.67
—
—
16.6
17.1
17.7
18.3
18.9
19.5
20.1
20.7
—
—
—
1.46
1.64
1.83
2.05
2.28
2.52
2.79
3.06
—
—
—
1.69
1.90
2.13
2.37
2.64
2.92
3.22
3.55
—
—
—
18.0
18.5
19.0
19.5
20.1
20.6
21.2
21.8
—
—
—
1.63
1.81
2.01
2.23
2.46
2.71
2.98
3.26
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
399
448
473
BkW
kW
r/s
BkW
kW
r/s
BkW
2124
21.7 2.14 2.48 22.8 2.32 2.68 23.9 2.50
2266
22.1 2.33 2.70 23.2 2.51 2.91 24.2 2.70
2408
22.5 2.54 2.94 23.6 2.73 3.15 24.6 2.91
2549
22.9 2.77 3.20 24.0 2.95 3.42 25.0 3.14
—
—
2691
23.4 3.01 3.48 24.4 3.20 3.70
2833
—
—
—
—
—
—
—
—
2974
—
—
—
—
—
—
—
—
3116
—
—
—
—
—
—
—
—
3257
—
—
—
—
—
—
—
—
3399
—
—
—
—
—
—
—
—
3541
—
—
—
—
—
—
—
—
LEGEND
BkW — Brake Kilowatts
FIOP — Factory-Installed Option
kW
— Input Kilowatts to Motor
*Standard drive range for Low-Medium static drive on 48TJ016 is 12.4 to
16.4 r/s. Standard drive range for High static drive on 48TJ016 is 17.05 to
21.7 r/s. Other r/s require a field-supplied drive.
NOTES:
1. Maximum continuous bkW is 3.17. The maximum continuous watts is
3775. Do not adjust motor rpm such that motor maximum bkW and/or kW
is exceeded at the maximum operating L/s.
2.89
3.12
3.37
3.63
—
—
—
—
—
—
—
2.
3.
4.
5.
6.
25.0
25.3
25.6
2.59
2.79
3.01
249
BkW
kW
r/s
299
BkW
kW
2.08
2.29
2.53
2.78
3.05
3.35
3.66
—
—
—
—
20.5
20.9
21.4
21.8
22.3
22.8
—
—
—
—
—
1.97
2.16
2.36
2.59
2.83
3.08
—
—
—
—
—
2.28
2.50
2.73
2.99
3.27
3.56
—
—
—
—
—
1.88
2.09
2.33
2.58
2.84
3.13
3.44
3.77
—
—
—
19.3
19.7
20.2
20.7
21.2
21.7
22.3
—
—
—
—
1.80
1.98
2.18
2.40
2.64
2.89
3.16
—
—
—
—
kW
r/s
498
BkW
kW
3.00
3.23
3.48
25.0
25.3
25.6
2.68
2.89
3.10
3.10
3.33
3.58
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
Interpolation is permissible. Do not extrapolate.
Fan performance is based on wet coils, clean filters, and casing loses. See
Table 25A for accessory/FIOP static pressure information.
Extensive motor and drive testing on these units ensures that the full brake
kilowatt and kW range of the motor can be utilized with confidence. Using
fan motors up to the kW or bkW rating shown will not result in nuisance
tripping or premature motor failure. Unit warranty will not be affected.
Use of a field-supplied motor may affect wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
Table 14 — Fan Performance Data (SI) — 48TJF,N016* (High Heat Units)
AIRFLOW
(L/s)
2124
2266
2408
2549
2691
2833
2974
3116
3257
3399
3541
r/s
kW
r/s
100
BkW
13.7
14.4
15.1
15.8
16.5
17.2
18.0
18.7
19.5
1.16
1.33
1.52
1.73
1.95
2.19
2.45
2.74
3.03
1.34
1.54
1.76
2.00
2.26
2.54
2.84
3.16
3.50
15.2
15.9
16.5
17.1
17.8
18.5
19.2
19.9
20.6
1.31
1.49
1.69
1.90
2.13
2.37
2.64
2.92
3.22
1.52
1.73
1.95
2.20
2.46
2.75
3.05
3.38
3.72
—
—
—
—
—
—
—
—
—
—
—
—
r/s
349
BkW
kW
r/s
21.7
22.1
22.6
23.0
23.5
2.15
2.34
2.56
2.78
3.03
2.48
2.71
2.96
3.22
3.50
22.9
23.2
23.6
24.0
24.5
2.33
2.52
2.74
2.97
3.21
2.69
2.92
3.17
3.43
3.72
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
AIRFLOW
(L/s)
2124
2266
2408
2549
2691
2833
2974
3116
3257
3399
3541
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
149
199
kW
r/s
BkW
kW
r/s
BkW
kW
r/s
50
BkW
16.7
17.3
17.8
18.4
19.0
19.7
20.3
21.0
1.48
1.66
1.86
2.07
2.30
2.55
2.82
3.10
1.71
1.92
2.15
2.40
2.67
2.95
3.26
3.59
—
—
—
—
—
—
—
—
—
249
BkW
kW
r/s
299
BkW
kW
20.6
21.0
21.5
21.9
22.4
22.9
1.98
2.17
2.36
2.60
2.84
3.10
2.28
2.51
2.75
3.01
3.29
3.59
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
18.1
18.6
19.1
19.7
20.2
20.8
21.4
1.64
1.83
2.03
2.24
2.48
2.74
3.01
1.89
2.11
2.35
2.60
2.87
3.16
3.48
19.3
19.8
20.3
20.8
21.3
21.9
22.5
1.80
2.00
2.20
2.42
2.66
2.92
3.19
2.09
2.31
2.55
2.80
3.08
3.38
3.69
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
kW
r/s
498
BkW
kW
25.0
25.3
25.6
2.68
2.89
3.10
3.10
3.34
3.58
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
399
448
473
BkW
kW
r/s
BkW
kW
r/s
BkW
23.9
24.3
24.6
25.0
2.51
2.70
2.92
3.15
2.90
3.13
3.38
3.65
24.5
24.8
25.1
25.5
2.60
2.80
3.01
3.24
3.00
3.23
3.48
3.76
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 25A for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
kilowatt and kW range of the motor can be utilized with confidence. Using
fan motors up to the kW or bkW rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
LEGEND
BkW — Brake Kilowatts
FIOP — Factory-Installed Option
kW
— Input Kilowatts to Motor
*Standard drive range for Low-Medium static drive on 48TJ016 is 12.4 to
16.4 r/s. Standard drive range for High static drive on 48TJ016 is 17.05 to
21.7 r/s. Other r/s require a field-supplied drive.
NOTES:
1. Maximum continuous bkW is 3.17. The maximum continuous watts is
3775. Do not adjust motor rpm such that motor maximum bkW and/or kW
is exceeded at the maximum operating L/s.
22
Table 15 — Fan Performance Data (SI) — 48TJD,M024* (Low Heat Units)
AIRFLOW
(L/s)
2595
2833
3069
3305
3541
3777
4013
4249
4485
4721
r/s
kW
r/s
100
BkW
12.6
13.5
14.4
15.4
16.3
17.3
18.3
19.2
20.2
21.2
1.69
2.03
2.40
2.82
3.27
3.77
4.31
4.89
5.52
6.19
1.91
2.29
2.71
3.18
3.69
4.25
4.86
5.52
6.22
6.98
13.9
14.7
15.5
16.4
17.3
18.2
19.1
20.1
21.0
22.0
1.92
2.27
2.65
3.06
3.53
4.03
4.57
5.16
5.79
6.47
r/s
349
BkW
kW
r/s
19.2
19.7
20.3
21.0
21.7
22.4
23.1
23.9
24.6
3.19
3.55
3.94
4.38
4.86
5.38
5.94
6.55
7.20
3.60
4.00
4.45
4.94
5.48
6.07
6.70
7.38
8.11
20.1
20.6
21.2
21.8
22.4
23.1
23.8
24.6
25.3
3.47
3.83
4.22
4.66
5.14
5.66
6.23
6.82
7.49
3.91
4.31
1.46
5.25
5.79
6.38
7.02
7.71
8.44
—
—
—
—
—
—
AIRFLOW
(L/s)
2595
2833
3069
3305
3541
3777
4013
4249
4485
4721
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
149
199
kW
r/s
BkW
kW
r/s
BkW
kW
50
BkW
2.17
2.56
2.99
3.46
3.98
4.54
5.16
5.82
6.53
7.29
15.0
15.8
16.6
17.4
18.2
19.1
20.0
20.9
21.8
22.7
2.17
2.51
2.89
3.32
3.78
4.29
4.84
5.43
6.06
6.75
2.44
2.83
3.27
3.74
4.27
4.84
5.46
6.12
6.84
7.61
2.42
2.77
3.15
3.58
4.05
4.56
5.11
5.70
6.35
7.03
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
399
448
473
BkW
kW
r/s
BkW
kW
r/s
BkW
249
BkW
kW
r/s
299
BkW
kW
2.72
3.12
3.55
4.04
4.56
5.14
5.76
6.43
7.15
7.93
17.2
17.8
18.5
19.3
20.0
20.8
21.6
22.4
23.2
24.1
2.67
3.02
3.41
3.84
4.31
4.82
5.38
5.98
6.62
7.32
3.01
3.41
3.85
4.33
4.86
5.44
6.07
6.75
7.47
8.25
18.2
18.8
19.4
20.1
20.8
21.6
22.3
23.1
23.9
24.8
2.93
3.28
3.68
4.11
4.59
5.10
5.66
6.26
6.91
7.60
3.30
3.70
4.15
4.64
5.17
5.75
6.38
7.06
7.79
8.57
kW
r/s
498
BkW
kW
21.8
22.3
22.8
23.4
24.0
24.6
25.2
4.02
4.38
4.78
5.22
5.70
6.23
6.80
4.53
4.94
5.39
5.89
6.44
7.03
7.67
—
—
—
—
—
—
—
—
—
21.0
21.5
22.0
22.6
23.2
23.2
24.5
25.3
3.74
4.10
4.50
4.94
5.42
5.94
6.51
7.12
4.22
4.62
5.07
5.57
6.11
6.70
7.34
8.03
21.4
21.9
22.4
23.0
23.6
24.2
24.9
25.6
3.88
4.24
4.64
5.08
5.56
6.08
6.66
7.27
4.38
4.78
5.23
5.73
6.27
6.87
7.51
8.20
—
—
—
—
—
—
—
—
—
—
—
—
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 26A for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
kilowatt and kW range of the motor can be utilized with confidence. Using
fan motors up to the kW or bkW rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
LEGEND
BkW
FIOP
kW
16.1
16.8
17.6
18.3
19.1
20.0
20.8
21.6
22.5
23.4
r/s
— Brake Kilowatts
— Factory-Installed Option
— Input Kilowatts to Motor
*Standard drive range for Low-Medium static drive on 48TJ024 is 12.8 to
15.2 r/s. Standard drive range for High static drive on 48TJ024 is 16.6 to
20.3 r/s. Other r/s require a field-supplied drive.
NOTES:
1. Maximum continuous bkW is 7.68. The maximum continuous watts is
8640. Do not adjust motor rpm such that motor maximum bkW and/or kW
is exceeded at the maximum operating L/s.
Table 16 — Fan Performance Data (SI) — 48TJF,N024* (High Heat Units)
AIRFLOW
(L/s)
2595
2833
3069
3305
3541
3777
4013
4249
4485
4721
r/s
kW
r/s
100
BkW
13.3
14.2
15.2
16.3
17.3
18.3
19.4
20.4
21.4
22.5
1.81
2.18
2.58
3.03
3.52
4.06
4.64
5.27
5.95
6.67
2.04
2.45
2.91
3.41
3.97
4.58
5.23
5.94
6.71
7.53
14.4
15.4
16.3
17.2
18.2
19.2
20.2
21.2
22.2
23.2
2.04
2.42
2.83
3.27
3.77
4.32
4.90
5.54
6.22
6.95
r/s
349
BkW
kW
r/s
19.6
20.2
20.9
21.6
22.3
23.1
23.9
24.8
25.6
3.31
3.69
4.12
4.59
5.11
5.67
6.27
6.92
7.62
3.73
4.17
4.65
5.18
5.76
6.39
7.07
7.81
8.60
20.5
21.1
21.7
22.4
23.1
23.9
24.6
25.5
3.58
3.97
4.39
4.86
5.38
5.94
6.55
7.21
4.04
4.47
4.95
5.49
6.07
6.70
7.39
8.13
—
—
—
—
—
—
—
—
—
AIRFLOW
(L/s)
2595
2833
3069
3305
3541
3777
4013
4249
4485
4721
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
149
199
kW
r/s
BkW
kW
r/s
BkW
kW
50
BkW
2.31
2.72
3.18
3.70
4.26
4.87
5.53
6.25
7.01
7.84
15.6
16.4
17.3
18.2
19.1
20.0
21.0
21.9
22.9
23.9
2.29
2.66
3.07
3.53
4.03
4.58
5.17
5.81
6.50
7.23
2.58
4.00
3.47
3.98
4.55
5.16
5.83
6.55
7.32
8.15
2.54
2.91
3.33
3.79
4.30
4.85
5.44
6.08
6.77
7.51
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
399
448
473
BkW
kW
r/s
BkW
kW
r/s
BkW
249
BkW
kW
r/s
299
BkW
kW
2.86
3.28
3.75
4.27
4.84
5.46
6.13
6.87
7.64
8.47
17.7
18.4
19.1
19.9
20.9
21.6
22.5
23.4
24.3
2.79
3.17
3.59
4.05
4.56
5.12
5.71
6.36
7.05
3.14
3.57
4.05
4.57
5.14
5.77
6.44
7.17
7.95
18.6
19.3
20.0
20.8
21.6
22.4
23.2
24.1
25.0
3.04
3.43
3.85
4.32
4.83
5.38
5.99
6.64
7.34
3.43
3.87
4.34
4.87
5.45
6.08
6.76
7.49
8.27
—
—
—
—
—
—
kW
r/s
498
BkW
kW
22.2
22.7
23.3
23.9
24.6
25.3
4.13
4.52
4.95
5.43
5.95
6.52
4.63
5.10
5.58
6.12
6.71
7.35
—
—
—
—
—
—
—
—
—
—
—
—
21.3
21.9
22.5
23.2
23.9
24.6
25.3
3.86
4.24
4.67
5.15
5.67
6.23
6.84
4.35
4.78
5.27
5.80
6.39
7.02
7.71
21.7
22.3
22.9
23.5
24.2
24.9
25.7
3.99
4.38
4.89
5.29
5.81
6.37
6.99
4.50
4.94
5.43
5.96
6.55
7.19
7.88
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 26A for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
kilowatt and kW range of the motor can be utilized with confidence. Using
fan motors up to the kW or bkW rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
LEGEND
BkW
FIOP
kW
16.6
17.4
18.2
19.1
19.9
20.8
21.7
22.7
23.6
24.6
r/s
— Brake Kilowatts
— Factory-Installed Option
— Input Kilowatts to Motor
*Standard drive range for Low-Medium static drive on 48TJ024 is 12.8 to
15.2 r/s. Standard drive range for High static drive on 48TJ024 is 16.6 to
20.3 r/s. Other r/s require a field-supplied drive.
NOTES:
1. Maximum continuous bkW is 7.68. The maximum continuous watts is
8640. Do not adjust motor rpm such that motor maximum bkW and/or kW
is exceeded at the maximum operating L/s.
23
Table 17 — Fan Performance Data (SI) — 48TJD,M028* (Low Heat Units)
AIRFLOW
(L/s)
3305
3541
3777
4013
4249
4485
4721
4957
5193
5311
r/s
50
BkW
kW
15.7
16.7
17.6
18.6
19.6
20.6
21.6
22.6
23.6
24.2
2.50
3.02
3.62
4.28
5.03
5.95
6.80
7.82
8.95
9.54
2.77
3.35
4.01
4.75
5.58
6.51
7.45
8.67
9.92
10.59
AIRFLOW
(L/s)
r/s
3305
3541
3777
4013
4249
4485
4721
4957
5193
5311
BkW
FIOP
kW
21.2
21.9
22.7
23.4
24.2
25.0
—
—
—
—
r/s
100
BkW
kW
16.7
17.6
18.6
19.5
20.4
21.4
22.4
23.3
24.3
2.83
3.38
3.99
4.68
5.45
6.31
7.26
8.31
9.45
3.14
3.74
4.42
5.19
6.05
7.00
8.05
9.21
10.48
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
149
199
r/s
BkW
kW
r/s
BkW
kW
r/s
5.25
6.96
6.73
7.61
8.57
9.63
—
—
—
—
22.1
22.7
23.4
24.2
24.9
25.7
—
—
—
—
5.16
5.81
6.53
7.33
8.22
9.19
—
—
—
—
5.72
6.44
7.24
8.13
9.11
10.19
—
—
—
—
kW
r/s
299
BkW
kW
20.4
21.1
21.9
22.7
23.5
24.3
25.2
4.33
4.94
5.63
6.40
7.25
8.19
9.22
4.79
5.48
6.24
7.09
8.04
9.08
10.22
—
—
—
—
—
—
—
—
—
17.7
18.5
19.4
20.3
21.2
22.2
23.1
24.0
3.18
3.74
4.38
5.09
5.88
6.76
7.73
8.80
3.53
4.15
4.86
5.65
6.52
7.50
8.57
9.76
18.6
19.4
20.3
21.1
22.0
22.9
23.8
24.7
3.55
4.13
4.78
5.52
6.32
7.23
8.22
9.30
3.93
4.58
5.30
6.11
7.02
8.01
9.11
10.31
19.5
20.3
21.1
21.9
22.8
23.6
24.5
25.4
3.93
4.53
5.20
5.95
6.78
7.70
8.71
9.81
4.36
5.02
5.77
6.60
7.52
8.54
9.66
10.88
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
349
399
448
BkW
kW
r/s
BkW
kW
r/s
BkW
4.74
5.37
6.07
6.86
7.73
8.68
—
—
—
—
249
BkW
22.9
23.5
24.2
24.9
25.6
—
—
—
—
—
kW
4.13
4.78
5.52
6.32
7.23
—
—
—
—
—
6.20
6.94
7.76
8.67
9.67
—
—
—
—
—
LEGEND
— Brake Kilowatts
— Factory-Installed Option
— Input Kilowatts to Motor
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 26A for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
kilowatt and kW range of the motor can be utilized with confidence. Using
fan motors up to the kW or bkW rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
*Standard drive range for Low-Medium static drive on 48TJ028 is 14.8 to
17.8 r/s. Standard drive range for High static drive on 48TJ028 is 18.6 to
22.4 r/s. Other r/s require a field-supplied drive.
NOTES:
1. Maximum continuous bkW is 9.92. The maximum continuous watts is
11,000. Do not adjust motor rpm such that motor maximum bkW and/or kW
is exceeded at the maximum operating L/s.
Table 18 — Fan Performance Data (SI) — 48TJF,N028* (High Heat Units)
AIRFLOW
(L/s)
3305
3541
3777
4013
4249
4485
4721
4957
5193
5311
r/s
50
BkW
kW
r/s
100
BkW
16.5
17.6
18.6
19.7
20.8
21.8
22.9
24.0
25.1
25.6
3.02
3.56
4.16
4.82
5.53
6.32
7.17
8.08
9.08
9.59
3.35
3.95
4.61
5.34
6.14
7.01
7.95
8.96
10.06
10.64
17.5
18.5
19.5
20.5
21.5
22.6
23.6
24.7
25.7
—
3.31
3.86
4.47
5.13
5.86
6.65
7.51
8.44
9.43
—
AIRFLOW
(L/s)
r/s
3305
3541
3777
4013
4249
4485
4721
4957
5193
5311
BkW
FIOP
kW
21.9
22.6
23.4
24.3
25.1
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
149
199
kW
r/s
BkW
kW
r/s
BkW
kW
3.67
4.28
4.95
5.69
6.50
7.38
8.33
9.36
10.46
—
18.4
19.4
20.3
21.3
22.3
23.3
24.3
25.3
—
—
3.60
4.16
4.78
5.45
6.19
7.33
7.86
8.79
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (Pa)
349
399
448
BkW
kW
r/s
BkW
kW
r/s
BkW
4.85
5.44
6.09
6.80
7.57
—
—
—
—
—
5.39
6.04
6.77
7.54
8.39
—
—
—
—
—
22.7
23.4
26.0
25.0
25.8
—
—
—
—
—
5.19
5.79
6.44
7.15
7.93
—
—
—
—
—
5.75
6.41
7.14
7.93
8.79
—
—
—
—
—
23.4
24.1
24.9
25.7
—
—
—
—
—
—
4.47
5.10
5.78
6.52
—
—
—
—
—
—
LEGEND
— Brake Kilowatts
— Factory-Installed Option
— Input Kilowatts to Motor
4.00
4.62
5.30
6.05
6.87
7.75
8.72
9.75
—
—
19.3
20.2
21.1
22.1
23.0
24.0
25.0
—
—
—
3.91
4.47
5.10
5.78
6.52
7.34
8.22
—
—
—
4.33
4.96
5.65
6.41
7.24
8.14
9.11
—
—
—
r/s
249
BkW
kW
r/s
299
BkW
kW
20.2
21.1
21.9
22.8
23.7
24.7
25.6
—
—
—
4.21
4.79
5.42
6.11
6.87
7.69
8.58
—
—
—
4.68
5.31
6.01
6.78
7.62
8.53
9.50
—
—
—
21.0
21.9
22.7
23.6
24.4
25.3
—
—
—
—
4.53
5.12
5.76
6.46
7.22
8.05
—
—
—
—
5.03
5.67
6.38
7.16
8.00
8.92
—
—
—
—
kW
6.12
6.79
7.52
8.32
—
—
—
—
—
—
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 26A for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
kilowatt and kW range of the motor can be utilized with confidence. Using
fan motors up to the kW or bkW rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
*Standard drive range for Low-Medium static drive on 48TJ028 is 14.8 to
17.8 r/s. Standard drive range for High static drive on 48TJ028 is 18.6 to
22.4 r/s. Other r/s require a field-supplied drive.
NOTES:
1. Maximum continuous bkW is 9.92. The maximum continuous watts is
11,000. Do not adjust motor rpm such that motor maximum bkW and/or kW
is exceeded at the maximum operating L/s.
24
Table 19 — Fan Performance Data (English) — 48TJD,M016* (Low Heat Units)
AIRFLOW
(cfm)
4500
4800
5100
5400
5700
6000
6300
6600
6900
7200
7500
AIRFLOW
(cfm)
4500
4800
5100
5400
5700
6000
6300
6600
6900
7200
7500
Rpm
809
850
892
934
976
1019
1063
1106
1150
—
—
0.2
Bhp
1.53
1.76
2.01
2.28
2.58
2.90
3.24
3.61
4.00
—
—
Rpm
1301
1324
1349
1374
1402
—
—
—
—
—
—
1.4
Bhp
2.87
3.13
3.41
3.71
4.04
—
—
—
—
—
—
0.4
Bhp
1.74
1.98
2.24
2.52
2.82
3.14
3.49
3.86
4.26
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.6
0.8
Watts Rpm Bhp Watts Rpm Bhp Watts Rpm
1502
994 1.96 1690 1078 2.18 1882 1156
1706 1027 2.20 1899 1107 2.43 2094 1183
1928 1061 2.46 2125 1138 2.70 2325 1211
2169 1096 2.75 2371 1170 2.99 2575 1241
2429 1132 3.06 2635 1204 3.30 2843 1272
2709 1168 3.38 2919 1238 3.63 3131 1304
3008 1206 3.74 3223 1273 3.99 3439 1337
3329 1244 4.11 3547 1309 4.37 3767
—
3670
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Watts
1317
1516
1733
1970
2225
2500
2795
3111
3448
—
—
Rpm
906
942
979
1017
1058
1096
1136
1177
1218
—
—
Watts
2477
2700
2942
3202
3481
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.6
1.8
1.9
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1369 3.11 2683 1434 3.35 2891 1497 3.47 2997
1390 3.37 2909 1454 3.62 3120 1515 3.74 3226
1413 3.66 3153 1475 3.90 3367 1535 4.03 3475
1437 3.96 3416 1498 4.21 3633
—
—
—
1463 4.29 3699
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Rpm
1497
1515
1535
—
—
—
—
—
—
—
—
1.0
Bhp
2.41
2.66
2.93
3.22
3.54
3.88
4.24
—
—
—
—
Watts
2077
2293
2528
2781
3053
3345
3657
—
—
—
—
2.0
Bhp
3.60
3.87
4.16
—
—
—
—
—
—
—
—
Watts
3103
3334
3584
—
—
—
—
—
—
—
—
Rpm
1230
1255
1281
1309
1338
1368
—
—
—
—
—
1.2
Bhp
2.64
2.89
3.17
3.47
3.79
4.13
—
—
—
—
—
Watts
2275
2495
2733
2990
3266
3562
—
—
—
—
—
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 25B for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
horsepower and watts range of the motor can be utilized with confidence.
Using fan motors up to the watts or bhp rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
LEGEND
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Standard drive range for Low-Medium static drive on 48TJ016 is 743 to
983 rpm. Standard drive range for High static drive on 48TJ016 is 1023 to
1300 rpm. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp is 4.25 and the maximum continuous watts is
3775. Do not adjust motor rpm such that motor maximum bhp and/or watts
is exceeded at the maximum operating cfm.
Table 20 — Fan Performance Data (English) — 48TJF,N016* (High Heat Units)
AIRFLOW
(cfm)
4500
4800
5100
5400
5700
6000
6300
6600
6900
7200
7500
AIRFLOW
(cfm)
4500
4800
5100
5400
5700
6000
6300
6600
6900
7200
7500
Rpm
819
861
904
947
990
1034
1078
1123
1167
—
—
0.2
Bhp
1.55
1.78
2.04
2.32
2.62
2.94
3.29
3.67
4.06
—
—
Rpm
1304
1327
1353
1380
1408
—
—
—
—
—
—
1.4
Bhp
2.88
3.14
3.43
3.73
4.06
—
—
—
—
—
—
0.4
Bhp
1.76
2.00
2.26
2.55
2.85
3.18
3.54
3.91
4.32
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.6
0.8
Watts Rpm Bhp Watts Rpm Bhp Watts Rpm
1518 1001 1.98 1705 1083 2.20 1894 1160
1726 1035 2.22 1916 1113 2.45 2110 1188
1952 1069 2.49 2147 1145 2.72 2345 1218
2197 1105 2.78 2396 1179 3.01 2598 1248
2461 1142 3.09 2665 1213 3.33 2871 1280
2745 1180 3.42 2953 1248 3.67 3163 1313
3050 1218 3.78 3262 1284 4.03 3476 1348
3376 1258 4.16 3592
—
—
—
—
3723
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Watts
1335
1538
1759
1999
2259
2539
2840
3161
3504
—
—
Rpm
914
951
989
1028
1068
1109
1150
1192
1234
—
—
Watts
2484
2711
2955
3219
3503
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.6
1.8
1.9
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1371 3.12 2688 1435 3.36 2895 1467 3.48 2999
1393 3.38 2917 1456 3.62 3126 1486 3.75 3232
1417 3.67 3165 1478 3.92 3377 1508 4.04 3484
1442 3.98 3432 1502 4.23 3646 1531 4.35 3755
1468 4.31 3718
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Rpm
1497
1517
1537
—
—
—
—
—
—
—
—
1.0
Bhp
2.42
2.68
2.95
3.25
3.57
3.91
4.28
—
—
—
—
Watts
2088
2307
2545
2802
3079
3375
3692
—
—
—
—
2.0
Bhp
3.60
3.87
4.16
—
—
—
—
—
—
—
—
Watts
3104
3338
3582
—
—
—
—
—
—
—
—
Rpm
1234
1259
1287
1315
1345
1376
—
—
—
—
—
1.2
Bhp
2.65
2.91
3.17
3.49
3.81
4.16
—
—
—
—
—
Watts
2284
2507
2749
3009
3289
3589
—
—
—
—
—
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 25B for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full
brake horsepower and watts range of the motor can be utilized with confidence. Using fan motors up to the watts or bhp rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
LEGEND
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Standard drive range for Low-Medium static drive on 48TJ016 is 743 to
983 rpm. Standard drive range for High static drive on 48TJ016 is 1023 to
1300 rpm. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp is 4.25 and the maximum continuous watts is
3775. Do not adjust motor rpm such that motor maximum bhp and/or watts
is exceeded at the maximum operating cfm.
25
Table 21 — Fan Performance Data (English) — 48TJD,M024* (Low Heat Units)
AIRFLOW
(cfm)
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
AIRFLOW
(cfm)
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
Rpm
755
810
866
923
980
1038
1096
1154
1213
1272
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm
2.27 1908
831 2.58 2171
901 2.91 2443 968 3.24 2723 1031
2.72 2287
881 3.04 2556
947 3.37 2833 1010 3.71 3116 1070
3.22 2710
932 3.55 2985
994 3.88 3266 1054 4.23 3554 1111
3.78 3177
985 4.11 3458 1044 4.45 3744 1100 4.80 4036 1155
4.39 3690 1038 4.73 3976 1094 5.07 4267 1148 5.43 4564 1200
5.06 4251 1093 5.40 4542 1146 5.75 4838 1197 6.11 5138 1246
5.78 4859 1148 6.13 5156 1198 6.49 5456 1247 6.85 5761 1294
6.56 5517 1204 6.92 5818 1251 7.28 6123 1298 7.65 6432 1343
7.40 6224 1260 7.77 6531 1306 8.13 6840 1350 8.51 7154 1394
8.30 6983 1317 8.67 7294 1360 9.05 7608 1403 9.43 7926 1445
1.0
Bhp Watts Rpm
3.58 3009 1091
4.05 3406 1127
4.57 3847 1166
5.15 4333 1207
5.78 4864 1250
6.47 5443 1294
7.22 6070 1340
8.02 6745 1388
8.88 7471 1436
9.81 8247 1486
Rpm
1149
1183
1219
1258
1299
1341
1385
1431
1478
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
1.9
Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
4.28 3602 1204
4.65 3907 1258 5.02 4217 1284 5.20 4375
4.76 4003 1236
5.13 4310 1288 5.50 4622 1313 5.68 4780
5.29 4450 1270
5.66 1459 1320 6.03 5073 1344 6.22 5232
5.88 4942 1307
6.25 5253 1355 6.62 5569 1378 6.81 5729
6.52 5480 1346
6.89 5794 1392 7.27 6113 1415 7.46 6273
7.21 6065 1387
7.59 6383 1392 7.97 6704 1453 8.16 6866
7.97 6699 1429
8.35 7019 1472 8.73 7343 1493 8.93 7506
8.78 7382 1473
9.15 7705 1515 9.55 8032 1535 9.75 8196
9.65 8114 1519 10.04 8441
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2.0
Bhp Watts
5.39 4533
5.87 4939
6.41 5391
7.00 5890
7.65 6435
8.36 7028
9.12 7670
—
—
—
—
—
—
LEGEND
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
Rpm
1309
1337
1368
1402
1437
1475
1514
—
—
—
1.2
Bhp
3.93
4.40
4.93
5.51
6.15
6.84
7.59
8.40
9.26
10.19
Watts
3302
3702
4146
4635
5170
5752
6382
7062
7791
8570
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 26B for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
horsepower and watts range of the motor can be utilized with confidence.
Using fan motors up to the watts or bhp rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
*Standard drive range for Low-Medium static drive on 48TJ024 is 769 to
909 rpm. Standard drive range for High static drive on 48TJ024 is 994 to
1216 rpm. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp is 10.3. The maximum continuous watts is 8640.
Do not adjust motor rpm such that motor maximum bhp and/or watts is
exceeded at the maximum operating cfm.
Table 22 — Fan Performance Data (English) — 48TJF,N024* (High Heat Units)
AIRFLOW
(cfm)
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
AIRFLOW
(cfm)
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
Rpm
795
854
914
975
1037
1099
1161
1223
1286
1349
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm
2.43 2043
866 2.74 2306
934 3.07 2578
998 3.40
2856 1059
2.92 2452
921 3.24 2722
984 3.57 3998 1044 3.90
3281 1102
3.46 2909
977 3.79 3184 1036 4.12 3465 1093 4.46
3752 1148
4.06 3414 1034 4.39 3695 1090 4.73 3981 1144 5.08
4272 1196
4.72 3969 1092 5.06 4255 1145 5.41 4546 1196 5.76
4842 1256
5.44 4575 1150 5.79 4866 1201 6.14 5162 1249 6.50
5462 1297
6.22 5232 1210 6.57 5529 1258 6.93 5829 1304 7.29
6134 1349
7.07 5943 1270 7.43 6245 1315 7.79 6550 1360 8.16
6869 1403
7.98 6708 1331 8.34 7014 1374 8.71 7324 1416 9.08
7638 1457
8.95 7528 1392 9.32 7839 1433 9.70 8154 1473 10.07 8471
—
Rpm
1173
1211
1252
1295
1340
1388
1436
1486
1538
—
1.4
Bhp Watts
4.44 3732
4.95 4165
5.53 4646
6.16 5176
6.85 5756
7.60 6388
8.41 7071
9.28 7807
10.22 8597
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.6
1.8
1.9
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1227 4.80 4036 1279 5.17 4345 1304 5.35 4502
1263 5.32 4471 1313 5.69 4782 1337 5.87 4939
1302 5.89 4954 1350 6.26 5267 1373 6.56 5425
1343 6.52 5487 1389 6.90 5802 1412 7.09 5961
1386 7.22 6070 1431 7.60 6387 1452 7.79 6547
1431 7.97 6704 1474 8.35 7024 1495 8.54 7186
1478 8.79 7390 1520 9.17 7713 1540 9.37 7876
1527 9.67 8130
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Rpm
1329
1361
1396
1434
1474
1516
—
—
—
—
1.0
1.2
Bhp Watts Rpm Bhp Watts
3.74 3142 1117 4.08 3434
4.25 3570 1158 4.60 3865
4.81 4045 1201 5.16 4343
5.43 4569 1246 5.79 4870
6.12 5142 1294 6.48 5447
6.86 5766 1343 7.22 6075
7.66 6443 1393 8.03 6755
8.53 7171 1445 8.90 7487
9.46 7954 1498 9.84 8274
—
—
—
—
—
2.0
Bhp
5.54
6.06
6.64
7.28
7.98
8.74
—
—
—
—
Watts
4629
5097
5584
6121
6709
7348
—
—
—
—
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 26B for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
horsepower and watts range of the motor can be utilized with confidence.
Using fan motors up to the watts or bhp rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
LEGEND
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
*Standard drive range for Low-Medium static drive on 48TJ024 is 769 to
909 rpm. Standard drive range for High static drive on 48TJ024 is 994 to
1216 rpm. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp is 10.3. The maximum continuous watts is 8640.
Do not adjust motor rpm such that motor maximum bhp and/or watts is
exceeded at the maximum operating cfm.
26
Table 23 — Fan Performance Data (English) — 48TJD,M028* (Low Heat Units)
AIRFLOW
(cfm)
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,250
AIRFLOW
(cfm)
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,250
Rpm
941
999
1058
1117
1177
1237
1297
1358
1418
1449
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
3.35 2769 1002 3.80 3140 1061 4.27 3528 1117 4.76 3934 1171 5.27 4356
4.05 3348 1057 4.53 3742 1112 5.02 4152 1166 5.54 4579 1218 6.07 5020
4.85 4007 1113 5.35 4424 1165 5.87 4856 1216 6.41 5304 1266 6.97 5766
5.74 4750 1169 6.28 5190 1219 6.83 5645 1268 7.40 6114 1315 7.98 6597
6.75 5583 1226 7.31 6047 1274 7.89 6524 1320 8.48 7015 1365 9.09 7520
7.98 6511 1284 8.46 6999 1329 9.07 7499 1374 9.69 8012 1417 10.33 8538
9.12 7450 1342 9.74 8051 1385 10.37 8574 1428 11.02 9110 1469 11.68 9657
10.49 8674 1400 11.14 9209 1442 11.80 9755 1483 12.47 10314 1523 13.16 10883
12.00 9919 1459 12.67 10478 —
—
—
—
—
—
—
—
—
12.80 10585 —
—
—
—
—
—
—
—
—
—
—
—
1.2
Rpm Bhp Watts
1224 5.80 4794
1268 6.63 5478
1314 7.55 6243
1361 8.58 7094
1410 9.72 8037
1459 10.98 9076
1510 12.36 10217
—
—
—
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1274 6.35 5248 1323 6.92 5718 1371 5.54 6204
1316 7.20 6960 1364 7.79 6437 1410 6.41 6939
1360 8.14 6734 1406 8.76 7239 1450 7.40 7759
1406 9.20 7605 1449 9.83 8129 1492 8.48 8666
1453 10.36 8568 1495 11.02 9111 1536 9.69 9667
1501 11.64 9627 1541 12.32 10190 —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 26B for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
horsepower and watts range of the motor can be utilized with confidence.
Using fan motors up to the watts or bhp rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
*Standard drive range for Low-Medium static drive on 48TJ028 is 888 to
1069 rpm. Standard drive range for High static drive on 48TJ028 is 1114 to
1341 rpm. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp is 13.3. The maximum continuous watts is
11,000. Do not adjust motor rpm such that motor maximum bhp and/or
watts is exceeded at the maximum operating cfm.
Table 24 — Fan Performance Data (English) — 48TJF,N028* (High Heat Units)
AIRFLOW
(cfm)
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,250
AIRFLOW
(cfm)
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,250
Rpm
992
1055
1118
1182
1246
1310
1374
1439
1503
1536
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2
0.4
0.6
0.8
1.0
1.2
Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
4.05 3348 1051 4.44 3668 1106 4.83 3995 1160 5.24 4331 1212 5.65 4675 1262 6.08 5026
4.77 3947 1110 5.17 4277 1162 5.58 4615 1214 6.00 4960 1263 6.43 5312 1311 6.86 5672
5.58 4610 1170 5.99 4950 1220 6.41 5298 1268 6.84 5653 1315 7.27 6014 1361 7.72 6382
6.46 5339 1231 6.88 5690 1278 7.31 6047 1324 7.75 6411 1369 8.20 6782 1413 8.66 7158
7.42 6136 1292 7.86 6498 1337 8.30 6865 1381 8.75 7239 1424 9.21 7618 1466 9.68 8003
8.47 7005 1354 8.92 7377 1397 9.83 7754 1439 9.84 8137 1480 10.31 8525 1520 10.79 8918
9.61 7947 1416 10.07 8329 1457 10.54 8715 1497 11.02 9107 1537 11.50 9504
—
—
—
10.84 8964 1479 11.32 9356 1518 11.79 9752
—
—
—
—
—
—
—
—
—
12.17 10059 1542 12.65 10460 —
—
—
—
—
—
—
—
—
—
—
—
12.86 10636 —
—
—
—
—
—
—
—
—
—
—
—
—
—
—
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1311 6.51 5385 1359 6.96 5751 1405 6.00 6124
1358 7.30 6039 1403 7.76 6412 1448 6.84 6792
1406 8.17 6767 1450 8.63 7137 1492 7.75 7524
1456 9.12 7541 1498 9.59 7929 1539 8.75 8323
1507 10.15 8393 1548 10.63 8790
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
2. Static pressure losses (i.e., EconoMi$erIV) must be added to external
static pressure before entering fan performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing loses. See
Table 26B for accessory/FIOP static pressure information.
5. Extensive motor and drive testing on these units ensures that the full brake
horsepower and watts range of the motor can be utilized with confidence.
Using fan motors up to the watts or bhp rating 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 wiring size. Contact your Carrier
representative for details. For additional information on motor performance,
refer to Table 29.
*Standard drive range for Low-Medium static drive on 48TJ028 is 888 to
1069 rpm. Standard drive range for High static drive on 48TJ028 is 1114 to
1341 rpm. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp is 13.3. The maximum continuous watts is
11,000. Do not adjust motor rpm such that motor maximum bhp and/or
watts is exceeded at the maximum operating cfm.
27
Table 25A — Accessory/FIOP Static Pressure (Pa) — 48TJ016
COMPONENT
2125
10
EconoMi$erIV
L/s
2831
17
2360
12
LEGEND
FIOP — Factory-Installed Option
3400
22
3525
25
NOTE: The static pressure must be added to external static pressure. The sum and the evaporator entering-air L/s should then be
used in conjunction with the Fan Performance tables to determine
blower r/s and kW.
Table 25B — Accessory/FIOP Static Pressure (in. wg) — 48TJ016
COMPONENT
4500
0.04
EconoMi$erIV
CFM
6000
0.07
5000
0.05
LEGEND
FIOP — Factory-Installed Option
7200
0.09
7500
0.10
NOTE: The static pressure must be added to external static pressure. The sum and the evaporator entering-air cfm should then be
used in conjunction with the Fan Performance tables to determine
blower rpm and watts.
Table 26A — Accessory/FIOP Static Pressure (Pa) — 48TJ024,028
COMPONENT
2800
17
EconoMi$erIV
L/s
4247
27
3400
22
LEGEND
FIOP — Factory-Installed Option
4719
30
5300
35
NOTE: The static pressure must be added to external static pressure. The sum and the evaporator entering-air L/s should then be
used in conjunction with the Fan Performance tables to determine
blower r/s and kW.
Table 26B — Accessory/FIOP Static Pressure (in. wg) — 48TJ024,028
COMPONENT
EconoMi$erIV
6000
0.07
CFM
9000
0.11
7200
0.09
LEGEND
FIOP — Factory-Installed Option
10,000
0.12
11,250
0.14
NOTE: The static pressure must be added to external static pressure. The sum and the evaporator entering-air cfm should then be
used in conjunction with the Fan Performance tables to determine
blower rpm and watts.
Table 27 — MoistureMiser Dehumidification Package Static Pressure Drop (in. wg)
UNIT SIZE
48TJ016
48TJ024
48TJ028
UNIT NOMINAL
TONS
15
20
25
300
.040
.071
.111
28
CFM PER TON
400
.071
.126
.197
500
.111
.197
.308
Table 28A — Fan R/s at Motor Pulley Settings* (Factory-Supplied Drives) (SI)
UNIT
48TJ
0
16.38
21.67
15.15
20.27
17.82
22.35
016**
016††
024**
024††
028**
028††
1/2
11 / 2
15.19
20.28
14.45
19.35
16.91
21.22
1
15.58
20.75
14.68
19.66
17.21
21.59
15.99
21.20
14.92
19.97
17.52
21.97
2
14.78
19.82
14.22
19.03
16.61
20.84
MOTOR PULLEY TURNS OPEN
21/2
3
31/2
14.38
13.98
13.58
19.37
18.90
18.43
13.98
13.75
13.52
18.73
18.42
18.12
16.31
16.01
15.71
20.46
20.08
19.70
*Approximate fan r/s shown.
†Due to belt and pulley size, pulley cannot be set to this many turns
open.
4
13.18
17.97
13.28
17.80
15.40
19.32
41/2
12.78
17.52
13.05
17.50
15.10
18.95
5
12.38
17.05
12.82
17.19
14.80
18.57
51/2
†
†
†
16.88
†
†
6
†
†
†
16.57
†
†
**Low-medium static drive.
††High static drive.
Table 28B — Fan Rpm at Motor Pulley Settings* (Factory-Supplied Drives) (English)
UNIT
48TJ
0
983
1300
909
1216
1069
1341
016**
016††
024**
024††
028**
028††
1/
2
959
1272
895
1198
1051
1318
1
935
1245
881
1179
1033
1296
11/2
911
1217
867
1161
1015
1273
2
887
1189
853
1142
997
1250
MOTOR PULLEY TURNS OPEN
21/2
3
31/2
4
863
839
815
791
1162
1134
1106
1078
839
825
811
797
1124
1105
1087
1068
979
960
942
924
1228
1205
1182
1159
*Approximate fan rpm shown.
†Due to belt and pulley size, pulley cannot be set to this many turns
open.
41 / 2
767
1051
783
1050
906
1137
5
743
1023
769
1031
888
1114
51/2
†
†
†
1013
†
†
6
†
†
†
994
†
†
**Low-medium static drive.
††High static drive.
Table 29 — Evaporator-Fan Motor Performance
UNIT
48TJ
UNIT
RATED
VOLTAGE
016
024
028
400
400
400
MAXIMUM
ACCEPTABLE
CONTINUOUS
BHP*
4.25
10.30
13.30
MAXIMUM
ACCEPTABLE
CONTINUOUS
BkW*
3.17
7.68
9.92
LEGEND
Bhp — Brake Horsepower
BkW — Fan Input Watts x Motor Efficiency
MAXIMUM
ACCEPTABLE
OPERATING
WATTS
3,775
8,640
11,000
MAXIMUM
AMP DRAW
4.8
13.0
14.6
*Extensive motor and electrical testing on these units ensures that
the full horsepower and kilowatt ranges of the motors can be utilized with confidence. Using your fan motors up to the horsepower
or kilowatt ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
Base Unit Operation
COOLING, UNITS WITHOUT ECONOMIZER — When
thermostat calls for cooling, terminals G and Y1 are energized.
The indoor (evaporator) fan contactor (IFC), and compressor
contactor no. 1 (C1) are energized and evaporator-fan motor,
compressor no. 1, and condenser fans start. The condenser-fan
motors run 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.
HEATING, UNITS WITHOUT ECONOMIZER
NOTE: The 48TJ016-028 units have 2 stages of heat.
When the thermostat calls for heating, power is sent to W
on the IGC (integrated gas unit controller) board. An LED
(light-emitting diode) on the IGC board will be on during normal operation. A check is made to ensure that the rollout
switch and limit switch are closed and the induced-draft motor
is running. The induced-draft motor is then energized, and
when speed is proven with the hall effect sensor on the motor,
the ignition activation period begins. The burners will ignite
within 5 seconds.
If the burners do not light, there is a 22-second delay before
another 5-second attempt. If the burners still do not light, this
sequence is repeated for 15 minutes. After the 15 minutes have
elapsed, if the burners still have not lighted, heating is locked
out. To reset the control, break 24-v power to the thermostat.
NOTE: The CRRFCURB013A00 horizontal supply and return
adapter accessory improves 48TJ fan performance by increasing
external static pressure by amount shown above.
Fig. 32 — Horizontal Supply/Return Fan
Performance with CRRFCURB013A00 High-Static
Regain Adapter
29
When ignition occurs the IGC board will continue to monitor the condition of the rollout and limit switches, the hall effect
sensor, as well as the flame sensor. If the unit is controlled
through a room thermostat set for fan auto., 45 seconds after
ignition occurs, the indoor-fan motor will be energized (and
the outdoor-air dampers will open to their minimum position).
If for some reason the overtemperature limit opens prior to the
start of the indoor fan blower, on the next attempt, the
45-second delay will be shortened to 5 seconds less than the
time from initiation of heat to when the limit tripped. Gas will
not be interrupted to the burners and heating will continue.
Once modified, the fan on delay will not change back to
45 seconds unless power is reset to the control.
When additional heat is required, W2 closes and initiates
power to the second stage of the main gas valve. When the thermostat is satisfied, W1 and W2 open and the gas valve closes,
interrupting the flow of gas to the main burners. If the call for
W1 lasted less than 1 minute, the heating cycle will not terminate until 1 minute after W1 became active. If the unit is controlled through a room thermostat set for fan auto., the indoorfan motor will continue to operate for an additional 45 seconds
then stop (and the outdoor-air dampers will close). If the overtemperature limit opens after the indoor motor is stopped within
10 minutes of W1 becoming inactive, on the next cycle the time
will be extended by 15 seconds. The maximum delay is 3 minutes. Once modified, the fan off delay will not change back to
45 seconds unless power is reset to the control.
A LED indicator is provided on the IGC to monitor operation. The IGC is located by removing the side panel and viewing the IGC through the view port located in the control box access panel. See Fig. 33. During normal operation, the LED is
continuously on. See Table 30 for error codes.
INDUCED DRAFT
MOTOR
VIEW
PORT
CONTROL BOX
ACCESS PANEL
IGC
FAULT
CODE
LABEL
COMBUSTION
FAN HOUSING
MAIN BURNER
SECTION
FLUE BOX
COVER
MAIN GAS
VALVE
Fig. 33 — Typical Gas Heating Section
Above 10 C (50 F) supply-air temperature, the dampers will
modulate from 100% open to the minimum open position.
From 10 C (50 F) to 7 C (45 F) supply-air temperature, the
dampers will maintain at the minimum open position. Below
7 C (45 F) the dampers will be completely shut. As the supplyair temperature rises, the dampers will come back open to the
minimum open position once the supply-air temperature rises
to 9 C (48 F).
If optional power exhaust is installed, as the outdoor-air
damper opens and closes, the power exhaust fans will be energized and deenergized.
If field-installed accessory CO2 sensors are connected to the
EconoMi$er IV control, a demand controlled ventilation strategy will begin to operate. As the CO2 level in the zone increases
above the CO2 set point, the minimum position of the damper
will be increased proportionally. As the CO2 level decreases
because of the increase in fresh air, the outdoor-air damper will
be proportionally closed. Damper position will follow the higher demand condition from DCV mode or free cooling mode.
Damper movement from full closed to full open (or vice
versa) will take between 11/2 and 21/2 minutes.
If free cooling can be used as determined from the appropriate changeover command (switch, dry bulb, enthalpy curve,
differential dry bulb, or differential enthalpy), a call for cooling
(Y1 closes at the thermostat) will cause the control to modulate
the dampers open to maintain the supply air temperature set
point at 10 to 13 C (50 to 55 F).
As the supply-air temperature drops below the set point
range of 10 to 13 C (50 to 55 F), the control will modulate the
outdoor-air dampers closed to maintain the proper supply-air
temperature.
HEATING, UNITS WITH ECONOMI$ERIV — When the
room thermostat calls for heat, the heating controls are energized as described in the Heating, Units Without Economizer
section. When the indoor fan is energized, the economizer
damper moves to the minimum position. When the indoor fan
is off, the economizer damper is fully closed.
COOLING, UNITS WITH MOISTUREMISER DEHUMIDIFICATION PACKAGE — When thermostat calls for
cooling, terminals G and Y1 and/or Y2 and the compressor
contactor C1 and/or C2 are energized. The indoor (evaporator)
fan motor (IFM), compressors, and outdoor (condenser) fan
motors (OFM) start. The OFMs run continuously while the
unit is in cooling. As shipped from the factory, both MoistureMiser dehumidification circuits are always energized.
Table 30 — IGC LED Indications
ERROR CODE
Normal Operation
Hardware Failure
Fan On/Off Delay Modified
Limit Switch Fault
Flame Sense Fault
Five Consecutive Limit Switch Faults
Ignition Lockout Fault
Inducer Switch Fault
Rollout Switch Fault
Internal Control Fault
Software Lockout
INTEGRATED GAS
UNIT CONTROLLER
(HIDDEN)
LED INDICATION
On
Off
1 Flash
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
7 Flashes
8 Flashes
9 Flashes
LEGEND
IGC — Integrated Gas Unit Controller
LED — Light-Emitting Diode
NOTES:
1. There is a 3-second pause between error code displays.
2. If more than one error code exists, all applicable error codes will
be displayed in numerical sequence.
3. Error codes on the IGC will be lost if power to the unit is
interrupted.
COOLING, UNITS WITH ECONOMI$ERIV — When free
cooling is not available, the compressors will be controlled by
the zone thermostat. When free cooling is available, the
outdoor-air damper is modulated by the EconoMi$er IV control to provide a 10 to 13 C (50 to 55 F) supply-air temperature
into the zone. As the supply-air temperature fluctuates above
13 C (55 F) or below 10 C (50 F), the dampers will be modulated (open or close) to bring the supply-air temperature back
within the set point limits.
For EconoMi$er IV operation, there must be a thermostat
call for the fan (G). This will move the damper to its minimum
position during the occupied mode.
30
As the refrigerant leaves the evaporator, the refrigerant
passes a subcooler control low-pressure switch (S-LPS1 for
circuit 1 or S-LPS2 for circuit 2) in the suction line. This lowpressure switch will deactivate the MoistureMiser package
when the suction pressure reaches 60 psig. The subcooler control low-pressure switch is an added safety device to protect
against evaporator coil freeze-up during low ambient operation. The subcooler control low-pressure switch will only
deactivate the 3-way liquid line solenoid valve in the MoistureMiser circuit. The compressors will continue to run as long
as there is a call for cooling, regardless of the position of the
subcooler control low-pressure switch. The 3-way solenoid
valve and the MoistureMiser package will be reactivated only
when the call for cooling has been satisfied, the subcooler control low-pressure switch has closed above 80 psig, and a new
call for cooling exists. The crankcase heaters on the scroll compressors provide additional protection for the compressors due
to the additional refrigerant charge in the subcooler.
When the humidistat is satisfied, the humidistat internal
switch opens, cutting power to and deenergizing the LLSVs.
The refrigerant is routed back through the evaporators and the
subcooler coils are removed from the refrigerant loops. When
the thermostat is satisfied, C1 and C2 are deenergized and the
compressors, IFM, and OFMs shut off. If the thermostat
fan selector switch is in the ON position, the IFM will run
continuously.
If MoistureMiser circuit modulation is desired, a fieldinstalled, wall-mounted humidistat is required. If the MoistureMiser humidistat is installed and calls for the MoistureMiser subcooler coil to operate, the humidistat internal
switch closes. This energizes the 3-way liquid line solenoid
valve coils (LLSV1 for circuit 1 and LLSV2 for circuit 2) of
the MoistureMiser circuits, forcing the warm liquid refrigerant
of the liquid line to enter the subcooler coils. See Fig. 34.
As the warm liquid passes through the subcooler coils, it is
exposed to the cold supply airflow coming off the evaporator
coils and the liquid is further cooled to a temperature approaching the evaporator coil leaving-air temperature. The state of the
refrigerant leaving the subcooler coils is a highly subcooled liquid refrigerant. The liquid then enters a thermostatic expansion
valve (TXV) where the liquid is dropped to the evaporator
pressure. The TXVs can throttle the pressure drop of the liquid
refrigerant and maintain proper conditions at the compressor
suction valves over a wide range of operating conditions. The
liquid proceeds to the evaporator coils at a temperature lower
than normal cooling operation. This lower temperature is what
increases the latent and sensible capacity of the evaporator
coils.
The 2-phase refrigerant passes through the evaporators and
is changed into a vapor. The air passing over the evaporator
coils will become colder than during normal operation as a result of the colder refrigerant temperatures. However, as it passes over the subcooler coils, the air will be warmed, decreasing
the sensible capacity and reducing the sensible heat ratio
(SHR) of the rooftop unit.
TXV —
Thermostatic Expansion Valve
Fig. 34 — MoistureMiser Operation Diagram
31
SERVICE
CERAMIC
BAFFLE
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Turn off accessory
heater power switch if applicable. Electrical shock could
cause personal injury.
CLIP
Cleaning — Inspect unit interior at beginning of each
heating and cooling season and as operating conditions require.
Remove unit top panel and/or side panels for access to unit
interior.
MAIN BURNER — At the beginning of each heating season,
inspect for deterioration or blockage due to corrosion or other
causes. Observe the main burner flames. Refer to Main Burners section on page 35.
FLUE GAS PASSAGEWAYS — The flue collector box and
heat exchanger cells may be inspected by removing heat exchanger access panel, flue box cover, and main burner assembly (Fig. 33). Refer to Main Burners section on page 35 for
burner removal sequence. If cleaning is required, remove heat
exchanger baffles and clean tubes with a wire brush.
Use caution with ceramic heat exchanger baffles. When installing retaining clip, be sure the center leg of the clip extends
inward toward baffle. See Fig. 35.
COMBUSTION-AIR BLOWER — Clean periodically to assure proper airflow and heating efficiency. Inspect blower
wheel every fall and periodically during heating season. For the
first heating season, inspect blower wheel bi-monthly to determine proper cleaning frequency.
To inspect blower wheel, remove heat exchanger access
panel. Shine a flashlight into opening to inspect wheel. If cleaning is required, remove motor and wheel assembly by removing screws holding motor mounting plate to top of combustion
fan housing (Fig. 33). The motor and wheel assembly will slide
up and out of the fan housing. Remove the blower wheel from
the motor shaft and clean with a detergent or solvent. Replace
motor and wheel assembly.
EVAPORATOR COIL — Clean as required with a commercial coil cleaner.
CONDENSER COIL — Clean condenser coil annually and
as required by location and outdoor-air conditions. Inspect coil
monthly — clean as required.
CONDENSATE DRAIN — Check and clean each year at
start of cooling season.
FILTERS — Clean or replace at start of each heating and cooling season, or more often if operating conditions require. Refer
to Tables 1A and 1B for type and size.
NOTE: The 48TJ028 unit requires industrial grade throwaway
filters capable of withstanding face velocities up to 3.2 m/s
(625 fpm). Ensure that replacement filters for the 48TJ028
units are rated for 3.2 m/s (625 fpm).
OUTDOOR-AIR INLET SCREENS — Clean screens with
steam or hot water and a mild detergent. Do not use throwaway
filters in place of screens.
HEAT EXCHANGER
TUBES
NOTE: One baffle and clip will be in each upper tube of the heat
exchanger.
Fig. 35 — Removing Heat Exchanger Ceramic
Baffles and Clips
valve may be added to the lower portion of the suction line at
the inlet of the compressor. The compressor should then be run
for 10 minutes, shut down, and the access valve opened until
no oil flows. This should be repeated twice to make sure the
proper oil level has been achieved.
FAN SHAFT BEARINGS — For size 016 units, bearings are
permanently lubricated. No field lubrication is required. For
size 024 and 028 units, the bearings are of the pillow block type
and have grease fittings. The bearing opposite the motor end
has an extended tube line so it can be lubricated from the motor
side. Lubricate the bearings twice annually.
Typical lubricants are given below:
MANUFACTURER
Texaco
Mobil
Sunoco
Texaco
LUBRICANT
Regal AFB-2*
Mobilplex EP No. 1
Prestige 42
Multifak 2
*Preferred lubricant because it contains rust and oxidation inhibitors.
CONDENSER AND EVAPORATOR-FAN MOTOR BEARINGS — The condenser and evaporator-fan motors have permanently sealed bearings, so no field lubrication is necessary.
NOTE: Field-supplied motors with removable lubrication plug
should be lubricated every 6 months.
Evaporator Fan Performance Adjustment
(Fig. 36-38) — Fan motor pulleys are factory set for speed
shown in Tables 1A and 1B.
To change fan speeds:
1. Shut off unit power supply.
2. a. Size 016 Only: Loosen belt by loosening fan motor
mounting plate nuts (see Fig. 37).
b. Size 024,028 Only: Loosen nuts on the 2 carriage
bolts in the motor mounting base. Install jacking
bolt and plate under motor base (bolt and plate are
shipped in installer’s packet). See Fig. 38. Using
bolt and plate, raise motor to top of slide and
remove belt. Secure motor in this position by
tightening the nuts on the carriage bolts.
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 Tables 1A and 1B. See
Tables 12A and 12B for air quantity limits.
5. Set movable flange at nearest keyway of pulley hub and
tighten setscrew. (See Tables 1A and 1B for speed change
for each full turn of pulley flange.)
Lubrication
COMPRESSORS — Each compressor is charged with the
correct amount of oil at the factory. Conventional white oil
(Sontext 200LT) is used. White oil is compatible with 3GS oil,
3GS oil may be used if the addition of oil is required. See compressor nameplate for original oil charge. A complete recharge
should be four ounces (89 mL) less than the original oil charge.
When a compressor is exchanged in the field it is possible that
a major portion of the oil from the replaced compressor may
still be in the system. While this will not affect the reliability of
the replacement compressor, the extra oil will add rotor drag
and increase power usage. To remove this excess oil, an access
32
Fig. 36 — Evaporator-Fan Pulley Alignment
and Adjustment
Fig. 37 — 48TJ016 Evaporator-Fan
Motor Section
6. Replace and tighten belts. See Belt Tension Adjustment
section on page 34.
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
mounting plate.
Evaporator Fan Service and Replacement
48TJ016 UNITS (See Fig. 37)
NOTE: To remove belts only, follow Steps 1-6.
1. Remove filter and supply-air section panels.
2. Remove unit top panel.
3. Loosen carriage nuts A and B holding motor mount
assembly to fan scroll side plates.
4. Loosen screw C.
5. Rotate motor mount assembly (with motor attached) as
far as possible away from evaporator coil.
6. Remove belt.
7. Rotate motor mount assembly back past original position
toward evaporator coil.
8. Remove motor mounting nuts D and E (both sides).
9. Lift motor up through top of unit.
10. Reverse above procedure to reinstall motor.
11. Check and adjust belt tension as necessary.
48TJ024,028 UNITS (See Fig. 38) — The 48TJ024,028 units
use a fan motor mounting system that features a slide-out
motor mounting plate. To replace or service the motor, slide
out the bracket.
1. Remove the evaporator-fan access panel and the heating control access panel.
NOTE: A 63 mm (21/2-in.) bolt and threaded plate are included in
the installer’s packet. They should be added to the motor support
channel below the motor mounting plate to aid in raising the motor.
The plate part no. is 50DP503842. The adjustment bolt is 3/8-16 x
13/4 inches.
Fig. 38 — 48TJ024 and 028 Evaporator-Fan
Motor Section
33
weather by grease. If the fan motor must be removed for service or replacement, be sure to regrease fan shaft and reinstall
fan cover, retaining clips, and fan guard. For proper performance, the fans should be positioned as shown in Fig. 40.
Tighten setscrews to 14 ± 1 ft-lb (18 ± 1.3 N-m).
Check for proper rotation of the fan(s) once reinstalled
(clockwise for high static and counterclockwise for standard
viewed from above). If necessary to reverse, switch leads at
contactor(s) in control box.
2. Remove the center post (located between the evaporator
fan and heating control access panels) and all screws
securing it.
3. Loosen nuts on the two carriage bolts in the motor mounting base.
4. Using jacking bolt under motor base, raise motor to top of
slide and remove belt. Secure motor in this position by
tightening the nuts on the carriage bolts.
5. Remove the belt drive.
6. Remove jacking bolt and tapped jacking bolt plate.
7. Remove the 2 screws that secure the motor mounting
plate to the motor support channel.
8. Remove the 3 screws from the end of the motor support
channel that interfere with the motor slide path.
9. Slide out the motor and motor mounting plate.
10. Disconnect wiring connections and remove the 4 mounting bolts.
11. Remove the motor.
12. To install the new motor, reverse Steps 1-11.
MOTOR
SHAFT
FAN HUB
HIGH-STATIC
FAN
PROPELLER
2.15 IN.
FAN DECK
SURFACE
POSITION TOP OF HIGH STATIC FAN PROPELLER HUB
2.15 INCHES (54.6 mm) ABOVE FAN DECK SURFACE
Belt Tension Adjustment — To adjust belt tension:
Fig. 40 — Condenser Fan Position
(High-Static Fan, Size 028 Only)
1. Loosen fan motor bolts.
2. Adjust belt tension:
a. Size 016 Units: Move motor mounting plate up or
down for proper belt tension (13 mm [1/2 in.]
deflection with one finger).
b. Size 024,028 Units: Turn motor jacking bolt to
move motor mounting plate up or down for proper
belt tension (10 mm [3/8 in.] deflection at midspan
with one finger [4 kg (9 lb) force]).
3. Tighten bolts.
4. Adjust bolts and nut on mounting plate to secure motor in
fixed position.
Refrigerant Charge — Amount of refrigerant charge is
listed on unit nameplate and in Tables 1A and 1B. Refer to
Carrier GTAC II; Module 5; Charging, Recovery, Recycling,
and Reclamation section for charging methods and procedures.
Unit panels must be in place when unit is operating during
charging procedure.
NOTE: Do not use recycled refrigerant as it may contain
contaminants.
NO CHARGE — Use standard evacuating techniques. After
evacuating system, weigh in the specified amount of refrigerant (refer to Tables 1A and 1B).
LOW CHARGE COOLING — Using cooling charging chart
(see Fig. 41 and 42), add or remove refrigerant until conditions
of the chart are met. Note that charging chart is different
from those normally used. An accurate pressure gage and
temperature-sensing device is required. Charging is accomplished by ensuring the proper amount of liquid subcooling.
Measure liquid line pressure at the liquid line service valve
using pressure gage. Connect temperature sensing device to
the liquid line near the liquid line service valve and insulate it
so that outdoor ambient temperature does not affect reading.
MOISTUREMISER SYSTEM CHARGING — The system
charge for units with the MoistureMiser option is greater than
that of the standard unit alone. The charge for units with this
option is indicated on the unit nameplate drawing. To charge
systems using the MoistureMiser dehumidification package,
fully evacuate, recover, and re-charge the system to the nameplate specified charge level. To check or adjust refrigerant
charge on systems using the MoistureMiser dehumidification
package, charge per the standard subcooling charts. The subcooler MUST be deenergized to use the charging charts. The
charts reference a liquid pressure (psig) and temperature at a
point between the condenser coil and the subcooler coil. A tap
is provided on the unit to measure liquid pressure entering the
subcooler (leaving the condenser).
TO USE THE COOLING CHARGING CHART — Use the
above temperature and pressure readings, and find the intersection point on the cooling charging chart. If intersection point
on chart is above line, add refrigerant. If intersection point on
chart is below line, carefully recover some of the charge.
Recheck suction pressure as charge is adjusted.
NOTE: Indoor-air cfm must be within normal operating range
of unit. All outdoor fans must be operating.
Condenser-Fan Adjustment (Fig. 39)
1. Shut off unit power supply.
2. Remove fan top-grille assembly and loosen fan hub
screws.
3. Adjust fan height on unit, using a straightedge placed
across the fan orifice.
4. Tighten setscrews and replace rubber hubcap to prevent
hub from rusting to motor shaft.
5. Fill hub recess with permagum if rubber hubcap is
missing.
NOTE: Dimensions are in inches (millimeters).
Fig. 39 — Condenser-Fan Adjustment
Condenser Fans (High-Static Option — Size
028 Only) — Each fan is supported by a formed wire
mount bolted to a fan deck and covered with a wire guard.
The exposed end of the fan motor shaft is protected from
34
The TXV (thermostatic expansion valve) is set to maintain
between 15 and 20 degrees of superheat at the compressors.
The valves are factory set and should not require re-adjustment.
BOTH CIRCUITS
ALL OUTDOOR FANS MUST BE OPERATING
Gas Valve Adjustment
NATURAL GAS — The gas valve opens and closes in response to the thermostat or limit control.
When power is supplied to valve terminals D1 and C2, the
main valve opens to its preset position.
The regular factory setting is stamped on the valve body
0.67 kPa (2.7 in. wg).
To adjust regulator:
1. Set thermostat at setting for no call for heat.
2. Turn main gas valve to OFF position.
3. Remove 3 mm (1/8-in.) pipe plug from manifold or gas
valve pressure tap connection. Install a suitable pressuremeasuring device.
4. Set main gas valve to ON position.
5. Set thermostat at setting to call for heat.
6. Remove screw cap covering regulator adjustment screw
(See Fig. 43).
7. Turn adjustment screw clockwise to increase pressure or
counterclockwise to decrease pressure.
8. Once desired pressure is established, set thermostat setting for no call for heat, turn off main gas valve, remove
pressure-measuring device, and replace 3 mm (1/8-in.)
pipe plug and screw cap.
Fig. 41 — Cooling Charging Chart — SI
BOTH CIRCUITS
ALL OUTDOOR FANS MUST BE OPERATING
Main Burners — For all applications, main burners are
factory set and should require no adjustment.
MAIN BURNER REMOVAL
1. Shut off (field-supplied) manual main gas valve.
2. Shut off power to unit.
3. Remove unit control box access panel, burner section access panel, and center post (Fig. 4 and 5).
4. Disconnect gas piping from gas valve inlet.
5. Remove wires from gas valve.
6. Remove wires from rollout switch.
7. Remove sensor wire and ignitor cable from IGC board.
8. Remove 2 screws securing manifold bracket to basepan.
9. Remove 2 screws that hold the burner support plate
flange to the vestibule plate.
10. Lift burner assembly out of unit.
CLEANING AND ADJUSTMENT
1. Remove burner rack from unit as described in Main
Burner Removal section above.
2. Inspect burners, and if dirty, remove burners from rack.
3. Using a soft brush, clean burners and crossover port as
required.
4. Adjust spark gap. See Fig. 44.
5. Reinstall burners on rack.
6. Reinstall burner rack as described above.
Fig. 42 — Cooling Charging Chart — English
Fig. 43 — Gas Valve
35
SEE
DETAIL
"C"
48TJD,TJM016
SEE
DETAIL
"C"
48TJD,TJM024,028 AND 48TJF,TJN016
SEE
DETAIL
"C"
48TJF,TJN024,028
Fig. 44 — Spark Gap Adjustment
36
Filter Drier — Replace whenever refrigerant system is
exposed to atmosphere.
ELECTRONIC PROTECTION MODULE FUNCTIONAL
TEST — Prior to start-up of the compressor, a functional
check of the electronic protection module should be done. Perform the following procedure to complete the functional
check:
1. Switch off unit power at the unit mounted disconnect
and lock out handle.
2. Disconnect one terminal, either S1 or S2, from the electronic protection module.
3. Return power to unit. Compressor should not start. If
compressor starts, perform electronic protection module
failure detection procedure below.
4. Switch off unit power.
5. Reconnect the disconnected thermistor lead.
6. Return power to unit. Compressor should start. If compressor does not start, perform electronic protection module failure detection procedure below.
ELECTRONIC PROTECTION MODULE FAILURE
DETECTION — If the compressor does not operate correctly
during the functional test, this indicates a disturbance in operation. Perform the following procedure:
1. Switch off unit power at the unit mounted disconnect
and lock out handle.
2. Check the connection of the thermistor leads in the electronic protection module terminal box for a loose connection or possible breakage.
3. The resistance of the thermistor chain is measured in a
cold condition (after the motor has sufficiently cooled
down). Measure resistance of the thermistor at the thermistor leads. Disconnect leads from terminals S1 and S2
and measure between the leads. The resistance must
be 1250 ohms or lower. If the thermistor has a higher
resistance, it is defective and the compressor must be
replaced.
Protective Devices
COMPRESSOR PROTECTION
Overtemperature — Each compressor has an internal protector
to protect it against excessively high discharge gas temperatures.
Overcurrent — Each compressor has an internal line break
motor protection, except the circuit no. 1 on the 48TJ028 unit.
Compressor no. 1 on the 48TJ028 unit uses an electronic module located with the compressor junction box, to provide motor
protection. This electronic module monitors winding and discharge temperatures. If these temperatures reach the trip values, the module interrupts the control line and causes the
compressor to switch off.
Crankcase Heater — Only the 48TJ028 unit and units with
MoistureMiser are equipped with a 70-watt crankcase heater to
prevent absorption of liquid refrigerant by oil in the crankcase
when the compressor is idle. The crankcase heater is energized
whenever there is a main power to the unit and the compressor
is not energized.
IMPORTANT: After a prolonged shutdown or servicing,
energize the crankcase heaters for 24 hours before starting
the compressors.
Compressor Lockout — If any of the safeties (high-pressure,
low-pressure, freeze protection thermostat, compressor internal
thermostat) trip, or if there is loss of power to the compressors,
the CLO (compressor lockout) will lock the compressors off.
To reset, manually move the thermostat setting.
ELECTRONIC MOTOR PROTECTION MODULE
(48TJ024 AND 028 UNITS ONLY) — The electronic protection module is used on both compressors on 48TJ024 and
028 units. This system utilizes the temperature dependent
resistance of thermistors to read motor winding temperature.
Four thermistors, connected in series, are embedded in the
motor windings. An electronic module processes the resistance
values and trips a control relay depending on the thermistor
resistance.
For protection in case of blocked rotor, a thermistor (for
each phase) is embedded in the winding heads on the upper
(suction gas) side of the compressor motor. A fourth thermistor
is located in the winding head at the lower end of the motor. A
fifth sensor is located in the discharge port to control discharge
gas superheat.
The thermistors are connected to the electronic protection
module at terminals S1 and S2.
When the resistance of any thermistor reaches tripping
value, the electronic protection module interrupts the control
line and causes the compressor to switch off. The control line
contacts between M1 and M2 are normally open, and close
when 24v power is applied to T1 and T2. The electronic protection module will open the contacts between M1 and M2 if
the resistance is in excess of 4500 ± 900 ohms, and will reset at
2750 ± 450 ohms.
After the thermistor has cooled off sufficiently, its resistance
will drop to the reset value. The electronic protection module,
however, resets after a time delay of 30 minutes. In addition,
the compressor lockout will need to be reset in order for the
compressor to re-start. Resetting of the lockout is accomplished
by briefly removing power from Y1 and Y2.
Use maximum measuring voltage of 3V. Damage to thermistor could occur at higher voltages.
4. If no defect is found with the thermistors, and there is no
loose contact or conductor breakage, the electronic protection module should be checked. Before checking the
module, remove the connection at terminal M2, then return control voltage to the module.
a. Check for 24-V between the terminals T1 and T2.
If no voltage is found, check unit wiring.
The voltage should be switched off between voltage tests,
in order to avoid short circuiting or accidental touching of
contacts.
b. With the R lead connected to either Y1 or Y2 as
appropriate, check for 24-V between M1 and
chassis ground. If voltage is not found, check unit
wiring.
c. With the thermistor leads removed from terminals
S1 and S2, and 24-V power applied to terminals
T1, T2, and M1, there should not be any voltage
between terminals T2 and M2. If voltage is
present, then the module is defective.
d. With a jumper across module terminals S1 and S2,
and with the R lead connected to either Y1 or Y2
as appropriate, there should be 24 v between terminals M2 and T2. If not, the module is defective.
37
Diagnostic LEDs — The unit control boards have LEDs
for diagnostic purposes. The IGC error codes are shown in
Table 30.
EVAPORATOR-FAN MOTOR PROTECTION — A manual reset, calibrated trip, magnetic circuit breaker protects
against overcurrent. Do not bypass connections or increase the
size of the breaker to correct trouble. Determine the cause and
correct it before resetting the breaker.
CONDENSER-FAN MOTOR PROTECTION — Each
condenser-fan motor is internally protected against
overtemperature.
HIGH AND LOW-PRESSURE SWITCHES — If either
switch trips, or if the compressor overtemperature switch activates, that refrigerant circuit will be automatically locked out
by the CLO. To reset, manually move the thermostat setting.
FREEZE PROTECTION THERMOSTAT (FPT) — An FPT
is located on the top and bottom of the evaporator coil. It
detects frost build-up and turns off the compressor, allowing
the coil to clear. Once the frost has melted, the compressor can
be reenergized.
Optional Hinged Access Doors — When the optional
service package is ordered or the if the hinged access doors
option is ordered, the unit will be provided with external and
internal hinged access doors to facilitate service.
Four external hinged access doors are provided. All external
doors are provided with 2 large 1/4 turn latches with folding
bail-type handles. (Compressor access doors have one latch.) A
single door is provided for filter and drive access. One door is
provided for control box access. The control box access door is
interlocked with the non-fused disconnect which must be in the
OFF position to open the door. Two doors are provided for
access to the compressor compartment.
Two internal access doors are provided inside the filter/
drive access door. The filter access door (on the left) is secured
by 2 small 1/4 turn latches with folding bail-type handles. This
door must be opened prior to opening the drive access door.
The drive access door is shipped with 2 sheet metal screws
holding the door closed. Upon initial opening of the door, these
screws may be removed and discarded. The door is then held
shut by the filter access door, which closes over it.
Relief Devices — All units have relief devices to protect
against damage from excessive pressures (i.e., fire). These
devices protect the high and low side.
Control Circuit, 24-V — This control circuit is protected against overcurrent by a 3.2-amp circuit breaker.
Breaker can be reset. If it trips, determine cause of trouble
before resetting. See Fig. 45 and 46.
Replacement Parts — A complete list of replacement
parts may be obtained from any Carrier distributor upon
request.
38
LEGEND AND NOTES FOR FIG. 45 AND 46
LEGEND
AHA
—
AL
—
BKR W/AT —
BR
—
C
—
CB
—
CC
—
CLO
—
COMP
—
CPM
—
CR
—
DM
—
DU
—
ECB
—
EQUIP
—
FPT
—
FU
—
GND
—
GVR
—
HPS
—
HS
—
HV
—
I
—
IA
—
IAQ
—
IDM
—
IFC
—
IFCB
—
IFM
—
IGC
—
L
—
LED
—
LOR
—
LPS
—
LS
—
MGV
—
NEC
—
Adjustable Heat Anticipator
Ambient Limit
Breaks with Amp Turns
Burner Relay
Contactor, Compressor
Circuit Breaker
Cooling Compensator
Compressor Lockout
Compressor Motor
Compressor Protection Module
Control Relay
Damper Motor
Dummy Terminal
Economizer Control Board
Equipment
Freeze Protection Thermostat
Fuse
Ground
Gas Valve Relay
High-Pressure Switch
Hall Effect Sensor
High Voltage
Ignitor
Indoor Air
Indoor Air Quality
Induced-Draft Motor
Indoor (Evaporator) Fan Contactor
Indoor (Evaporator) Fan Circuit Breaker
Indoor (Evaporator) Fan Motor
Integrated Gas Unit Controller
Light
Light-Emitting Diode
Lockout Relay
Low-Pressure Switch
Limit Switch
Main Gas Valve
National Electrical Code
OA
OAS
OFC
OFM
PL
PRI
RAS
RS
SAT
SN
SW
TB
TC
TH
TRAN
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Outdoor Air
Outdoor Air Sensor
Outdoor (Condenser) Fan Contactor
Outdoor (Condenser) Fan Motor
Plug Assembly
Primary
Return Air Sensor
Rollout Switch
Supply Air Temperature
Sensor
Switch
Terminal Block
Thermostat Cooling
Thermostat Heating
Transformer
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Splice (Marked)
Splice (Field Supplied)
Factory Wiring
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
To indicate common potential only;
not to represent wiring.
NOTES:
1. Compressor and fan motors thermally protected; 3-phase motors protected against primary single-phasing
conditions.
2. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent.
3. Jumpers are omitted when unit is equipped with economizer.
4. IFCB must trip amps is equal to or less than 140% full load amps.
5. The CLO locks out the compressor to prevent short cycling on compressor overload and safety devices. Before
replacing CLO, check these devices.
6. Number(s) indicates the line location of used contacts. A bracket over (2) numbers signifies a single-pole,
double-throw contact. An underlined number signifies a normally closed contact. A plain (no line) number
signifies a normally open contact.
39
Fig. 45 — Typical Wiring Schematic (48TJ024, 400 V Shown)
40
Fig. 45 — Typical Wiring Schematic (48TJ024, 400 V Shown) (cont)
41
Fig. 46 — Typical Component Arrangement (48TJ024 Shown)
42
TROUBLESHOOTING
Refer to Tables 31-33 for troubleshooting details.
Table 31 — Cooling Service Analysis
PROBLEM
Compressor and
Condenser Fan
Will Not Start.
Compressor Will Not
Start But Condenser Fan
Runs
Compressor Cycles
(Other Than Normally
Satisfying Thermostat).
Compressor Operates
Continuously.
Excessive Head
Pressure.
Head Pressure Too Low.
Excessive Suction
Pressure.
Suction Pressure Too
Low.
CAUSE
Power failure.
Fuse blown or circuit breaker tripped.
Defective thermostat, contactor, transformer, or control
relay.
Insufficient line voltage.
Incorrect or faulty wiring.
Thermostat setting too high.
Faulty wiring or loose connections in compressor circuit.
Compressor motor burned out, seized, or internal overload open.
Defective overload.
Compressor locked out
One leg of 3-phase power dead.
Refrigerant overcharge or undercharge.
Defective compressor.
Insufficient line voltage.
Blocked condenser.
Defective overload.
Defective thermostat.
Faulty condenser-fan motor.
Restriction in refrigerant system.
Dirty air filter.
Unit undersized for load.
Thermostat set too low.
Low refrigerant charge.
Air in system.
Condenser coil dirty or restricted.
Dirty air filter.
Dirty condenser coil.
Refrigerant overcharged.
Faulty TXV.
Air in system.
Condenser air restricted or air short-cycling.
Low refrigerant charge.
Restriction in liquid tube.
High heat load.
Faulty TXV.
Refrigerant overcharged.
Dirty air filter.
Low refrigerant charge.
Metering device or low side restricted.
Faulty TXV.
Insufficient evaporator airflow.
Compressor No. 2
Will Not Run.
Temperature too low in conditioned area.
Field-installed filter drier restricted.
Unit in economizer mode.
LEGEND
TXV — Thermostatic Expansion Valve
43
REMEDY
Call power company.
Replace fuse or reset circuit breaker.
Replace component.
Determine cause and correct.
Check wiring diagram and rewire correctly.
Lower thermostat setting below room temperature.
Check wiring and repair or replace.
Determine cause. Replace compressor.
Determine cause and replace.
Determine cause for safety trip and reset lockout.
Replace fuse or reset circuit breaker.
Determine cause.
Recover refrigerant, evacuate system, and recharge
to nameplate.
Replace and determine cause.
Determine cause and correct.
Determine cause and correct.
Determine cause and replace.
Replace thermostat.
Replace.
Locate restriction and remove.
Replace filter.
Decrease load or increase unit size.
Reset thermostat.
Locate leak, repair, and recharge.
Recover refrigerant, evacuate system, and recharge.
Clean coil or remove restriction.
Replace filter.
Clean coil.
Recover excess refrigerant.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Recover refrigerant, evacuate system, and recharge.
Determine cause and correct.
Check for leaks, repair, and recharge.
Remove restriction.
Check for source and eliminate.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Recover excess refrigerant.
Replace filter.
Check for leaks, repair, and recharge.
Remove source of restriction.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Increase air quantity. Check filter and replace if
necessary.
Reset thermostat.
Replace.
Proper operation; no remedy necessary.
Table 32 — Heating Service Analysis
PROBLEM
Burners Will Not
Ignite.
CAUSE
Misaligned spark electrodes.
No gas at main burners.
Water in gas line.
No power to furnace.
No 24 v power supply to control circuit.
Inadequate Heating.
Miswired or loose connections.
Burned-out heat anticipator in thermostat.
Broken thermostat wires.
Dirty air filter.
Gas input to unit too low.
Unit undersized for application.
Restricted airflow.
Blower speed too low.
Limit switch cycles main burners.
Too much outdoor air.
Poor Flame
Characteristics.
Incomplete combustion (lack of combustion air)
results in:
Aldehyde odors, CO, sooting flame, or floating flame.
Burners Will Not
Turn Off.
Unit is locked into Heating mode for a one minute
minimum.
REMEDY
Check flame ignition and sensor electrode positioning.
Adjust as needed.
Check gas line for air; purge as necessary. After purging
gas line of air, allow gas to dissipate for at least 5 minutes before attempting to relight unit.
Check gas valve.
Drain water and install drip leg to trap water.
Check power supply, fuses, wiring, and circuit breaker.
Check transformer. Transformers with internal overcurrent protection require a cool-down period before
resetting. Check 24-v circuit breaker; reset if necessary.
Check all wiring and wire nut connections.
Replace thermostat.
Run continuity check. Replace wires if necessary.
Clean or replace filter as necessary.
Check gas pressure at manifold. Clock gas meter for
input. If too low, increase manifold pressure or replace
with correct orifices.
Replace with proper unit or add additional unit.
Clean filter, replace filter, or remove any restrictions.
Install alternate motor, if applicable, or adjust pulley to
increase fan speed.
Check rotation of blower, thermostat heat anticipator settings, and temperature rise of unit. Adjust as needed.
Adjust minimum position.
Check economizer operation.
Check all screws around flue outlets and burner compartment. 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
GR — Ground
Table 33 — MoistureMiser Dehumidification Subcooler Service Analysis
PROBLEM
Subcooler Will Not Energize
CAUSE
No power to subcooler control transformer.
No power from subcooler control transformer to
liquid line three-way valve.
Liquid line three-way valve will not operate.
Subcooler Will Not Deenergize Liquid line three-way valve will not close.
Low System Capacity
Low refrigerant charge or frosted coil.
44
REMEDY
Check power source. Ensure all wire connections
are tight.
1. Fuse open; check fuse. Ensure continuity of wiring.
2. Subcooler control low-pressure switch open.
Cycle unit off and allow low-pressure switch
to reset. Replace switch if it will not close.
3. Transformer bad; check transformer.
1. Solenoid coil defective; replace.
2. Solenoid valve stuck closed; replace.
Valve is stuck open; replace.
1. Check charge amount. See system charging
section.
2. Evaporator coil frosted; check and replace
subcooler control low-pressure switch if necessary.
Refer to Fig. 47 for IGC troubleshooting information.
LEGEND
IGC — Integrated Gas Unit Controller
NOTE: Thermostat Fan Switch in the “AUTO”
position.
Fig. 47 — IGC Control (Heating and Cooling)
45
EconoMi$erIV Troubleshooting — See Table 34 for
EconoMi$erIV logic.
A functional view of the EconoMi$erIV is shown in
Fig. 48. Typical settings, sensor ranges, and jumper positions
are also shown. An EconoMi$erIV simulator program is
available from Carrier to help with EconoMi$erIV training and
troubleshooting.
ECONOMI$ERIV PREPARATION — This procedure is
used to prepare the EconoMi$erIV for troubleshooting. No
troubleshooting or testing is done by performing the following
procedure.
NOTE: This procedure requires a 9-v battery, 1.2 kilo-ohm
resistor, and a 5.6 kilo-ohm resistor which are not supplied
with the EconoMi$erIV.
3. Connect a 9-v battery to AQ (positive node) and AQ1
(negative node). The LED for both DCV and Exhaust
should turn on. The actuator should drive to between 90
and 95% open.
4. Turn the Exhaust potentiometer CW until the Exhaust
LED turns off. The LED should turn off when the
potentiometer is approximately 90%. The actuator should
remain in position.
5. Turn the DCV set point potentiometer CW until the DCV
LED turns off. The DCV LED should turn off when the
potentiometer is approximately 9 v. The actuator should
drive fully closed.
6. Turn the DCV and Exhaust potentiometers CCW until
the Exhaust LED turns on. The exhaust contacts will
close 30 to 120 seconds after the Exhaust LED turns on.
7. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
DCV MINIMUM AND MAXIMUM POSITION — To check
the DCV minimum and maximum position:
1. Make sure EconoMi$erIV preparation procedure has
been performed.
2. Connect a 9-v battery to AQ (positive node) and AQ1
(negative node). The DCV LED should turn on. The
actuator should drive to between 90 and 95% open.
3. Turn the DCV Maximum Position potentiometer to midpoint. The actuator should drive to between 20 and 80%
open.
4. Turn the DCV Maximum Position potentiometer to fully
CCW. The actuator should drive fully closed.
5. Turn the Minimum Position potentiometer to midpoint.
The actuator should drive to between 20 and 80% open.
6. Turn the Minimum Position Potentiometer fully CW. The
actuator should drive fully open.
7. Remove the jumper from TR and N. The actuator should
drive fully closed.
8. Return EconoMi$erIV settings and wiring to normal
after completing troubleshooting.
SUPPLY-AIR INPUT — To check supply-air input:
1. Make sure EconoMi$erIV preparation procedure has
been performed.
2. Set the enthalpy potentiometer to A. The Free Cool LED
turns on. The actuator should drive to between 20 and
80% open.
3. Remove the 5.6 kilo-ohm resistor and jumper T to T1.
The actuator should drive fully open.
4. Remove the jumper across T and T1. The actuator should
drive fully closed.
5. Return EconoMi$erIV settings and wiring to normal
after completing troubleshooting.
ECONOMI$ERIV TROUBLESHOOTING COMPLETION — This procedure is used to return the EconoMi$erIV
to operation. No troubleshooting or testing is done by performing the following procedure.
1. Disconnect power at TR and TR1.
2. Set enthalpy potentiometer to previous setting.
3. Set DCV maximum position potentiometer to previous
setting.
4. Set minimum position, DCV set point, and exhaust
potentiometers to previous settings.
5. Remove 620-ohm resistor from terminals SR and +.
6. Remove 1.2 kilo-ohm checkout resistor from terminals
SO and +. If used, reconnect sensor from terminals SO and
+.
IMPORTANT: Be sure to record the positions of all potentiometers before starting troubleshooting.
1. Disconnect power at TR and TR1. All LEDs should be
off. Exhaust fan contacts should be open.
2. Disconnect device at P and P1.
3. Jumper P to P1.
4. Disconnect wires at T and T1. Place 5.6 kilo-ohm resistor
across T and T1.
5. Jumper TR to 1.
6. Jumper TR to N.
7. If connected, remove sensor from terminals SO and +.
Connect 1.2 kilo-ohm 4074EJM checkout resistor across
terminals SO and +.
8. Put 620-ohm resistor across terminals SR and +.
9. Set minimum position, DCV set point, and exhaust
potentiometers fully CCW (counterclockwise).
10. Set DCV maximum position potentiometer fully CW
(clockwise).
11. Set enthalpy potentiometer to D.
12. Apply power (24 vac) to terminals TR and TR1.
DIFFERENTIAL ENTHALPY — To check differential
enthalpy:
1. Make sure EconoMi$erIV preparation procedure has
been performed.
2. Place 620-ohm resistor across SO and +.
3. Place 1.2 kilo-ohm resistor across SR and +. The Free
Cool LED should be lit.
4. Remove 620-ohm resistor across SO and +. The Free
Cool LED should turn off.
5. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
SINGLE ENTHALPY — To check single enthalpy:
1. Make sure EconoMi$erIV preparation procedure has
been performed.
2. Set the enthalpy potentiometer to A (fully CCW). The
Free Cool LED should be lit.
3. Set the enthalpy potentiometer to D (fully CW). The Free
Cool LED should turn off.
4. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
DCV (Demand Controlled Ventilation) AND POWER
EXHAUST — To check DCV and Power Exhaust:
1. Make sure EconoMi$erIV preparation procedure has
been performed.
2. Ensure terminals AQ and AQ1 are open. The LED for
both DCV and Exhaust should be off. The actuator
should be fully closed.
46
7. Remove jumper from TR to N.
8. Remove jumper from TR to 1.
9. Remove 5.6 kilo-ohm resistor from T and T1. Reconnect
wires at T and T1.
10. Remove jumper from P to P1. Reconnect device at P and
P1.
11. Apply power (24 vac) to terminals TR and TR1.
Table 34 — EconoMi$erIV Input/Output Logic
Demand Control
Ventilation (DCV)
Below set
(DCV LED Off)
Above set
(DCV LED On)
INPUTS
Enthalpy*
Outdoor
OUTPUTS
N Terminal†
Occupied
Unoccupied
Stage Stage
1
2
Damper
On
On
Minimum position
Closed
On
Off
Off
Off
On
Off
Modulating** (between min.
Modulating** (between
position and full-open)
closed and full-open)
Off
Off
Off
Off
Minimum position
Closed
On
On
Modulating†† (between min. Modulating†† (between
position and DCV maximum) closed and DCV
On
Off
maximum)
Off
Off
On
Off
Modulating***
Modulating†††
Off
Off
Off
Off
Compressor
Return
High
(Free Cooling LED Off)
Low
Low
(Free Cooling LED On)
High
High
(Free Cooling LED Off)
Low
Low
(Free Cooling LED On)
High
Y1
Y2
On
On
Off
On
On
Off
On
On
Off
On
On
Off
On
Off
Off
On
Off
Off
On
Off
Off
On
Off
Off
***Modulation is based on the greater of DCV and supply air sensor
signals, between minimum position and either maximum position
(DCV) or fully open (supply air signal).
†††Modulation is based on the greater of DCV and supply air
sensor signals, between closed and either maximum position
(DCV) or fully open (supply air signal).
*For single enthalpy control, the module compares outdoor
enthalpy to the ABCD set point.
†Power at N terminal determines Occupied/Unoccupied setting:
24 vac (Occupied), no power (Unoccupied).
**Modulation is based on the supply air sensor signal.
††Modulation is based on the DCV signal.
Fig. 48 — EconoMi$erIV Functional View
47
Copyright 2006 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 004-826
Printed in U.S.A.
Form 48TJ-C5SI
Pg 50
4-06
Replaces: 48TJ-C4SI
Book 1 4
Tab 1a 6a
MODEL NO.:
SERIAL NO.:
DATE:
TECHNICIAN:
I PRE-START-UP
VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
VERIFY INSTALLATION OF INDOOR FAN MOTOR ADJUSTMENT BOLT AND PLATE (48TJ024-028 ONLY)
VERIFY INSTALLATION OF ECONOMI$ERIV HOOD
VERIFY INSTALLATION OF FLUE HOOD AND WIND BAFFLE
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
CHECK GAS PIPING FOR LEAKS
CHECK THAT FILTERS AND SCREENS ARE CLEAN AND IN PLACE
VERIFY THAT UNIT IS LEVEL
CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SETSCREW
IS TIGHT
VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
VERIFY THAT SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION
VERIFY THAT CRANKCASE HEATER HAS BEEN ENERGIZED FOR 24 HOURS (SIZE 024,028 AND UNITS WITH
MOISTUREMISER DEHUMIDIFICATION SYSTEM ONLY)
II START-UP
ELECTRICAL
SUPPLY VOLTAGE
L1-L2
L2-L3
L3-L1
COMPRESSOR AMPS — COMPRESSOR NO. 1
L1
L2
L3
— COMPRESSOR NO. 2
L1
L2
L3
SUPPLY FAN AMPS
EXHAUST FAN AMPS
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
C (F) DB (Dry-Bulb)
RETURN-AIR TEMPERATURE
C (F) DB
COOLING SUPPLY AIR
C (F)
GAS HEAT SUPPLY AIR
C (F)
C (F) WB (Wet-Bulb)
PRESSURES
GAS INLET PRESSURE
GAS MANIFOLD PRESSURE STAGE NO. 1
REFRIGERANT SUCTION
CIRCUIT NO. 1
REFRIGERANT DISCHARGE CIRCUIT NO. 1
kPa (IN. WG)
kPa (IN. WG)
Pa (PSIG)
Pa (PSIG)
STAGE NO. 2
CIRCUIT NO. 2
CIRCUIT NO. 2
kPa (IN. WG)
Pa (PSIG)
Pa (PSIG)
VERIFY REFRIGERANT CHARGE USING CHARGING CHART ON PAGE 35.
GENERAL
ECONOMI$ERIV MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS
Copyright 2006 Carrier Corporation
Book
Tab
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
1 4
Catalog No. 004-826
Printed in U.S.A.
Form 48TJ-C5SI
Pg CL-1
3-06
Replaces: 48TJ-C4SI
1a 6a
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - CUT ALONG DOTTED LINE
CUT ALONG DOTTED LINE
START-UP CHECKLIST
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