Page 3 - Fig. 3 — Rigging Details
3 NOTE: For preassembled horizontal adapter roof curb par t no.CRRFCURB013A00, the accessory kit includes a factory-designed,high-static, transition duct. For horizontal curb part no.CRRFCURB012A00, a field-supplied transition duct is required. Fig. 2 — Horizontal Adapter Roof Curb and Roof Curb NOT...
Page 4 - ig
4 POWER EXHAUST/BAROMETRIC RELIEF (ACCESSORY ONLY) F ig . 4 — Ba se U n it D imen s io n s , 50 T J 016 ,020 UNIT ST D UNIT W E IGHT E C ONOM I$E R W E IGHT CORNE R (A ) CORNE R (B ) CORNE R (C ) CORNE R (D ) DIM A D IM B D IM C Lb K g Lb K g Lb K g Lb K g Lb K g Lb K g F t-i n . mm F t-i n . mm F t...
Page 6 - Table 1 — Physical Data
6 Table 1 — Physical Data LEGEND *Circuit 1 uses the lower por tion of condenser coil and lower por tion of evap- orator coils; and Circuit 2 uses the upper por tion of both coils. †The 50TJ028 units requires 2-in. industrial-grade filters capable of handling face velocities of up to 625 ft/min (suc...
Page 7 - Fig. 7 — Concentric Duct Air Distribution; Fig. 8 — Concentric Duct Details
7 Step 3 — Field Fabricate Ductwork — Secure all ducts to building structure. Use flexible duct connectors be-tween unit and ducts as required. Insulate and weatherproof allexternal ductwork, joints, and roof openings with counterflashing and mastic in accordance with applicable codes. Ducts passing...
Page 8 - Step 6 — Make Electrical Connections; Fig. 10 — Make Electrical Connections; THERMOSTAT ASSEMBLY; Fig. 12 — Field Control Thermostat Wiring
8 Step 6 — Make Electrical Connections FIELD POWER SUPPLY — Unit is factory wired for volt-age shown on nameplate. When installing units, provide a disconnect, per NEC (National Electrical Code) requirements, of adequate size(Table 2). All field wiring must comply with NEC and local requirements. Ro...
Page 9 - Table 2 — Electrical Data
9 Table 2 — Electrical Data UNIT 50TJ NOMINAL VOLTAGE (3 Ph, 60 Hz) VOLTAGE RANGE COMPRESSOR OFM IFM POWER EXHAUST ELECTRIC HEAT* POWER SUPPLY No. 1 No. 2 Min Max RLA LRA RLA LRA Qty Hp FLA (ea) Hp FLA FLA LRA kW FLA MCA MOCP† 016 (15 Tons) 208/230 187 253 28.8 195 28.8 195 3 0.5 1.7 3.7 10.5/11.0 —...
Page 11 - Step 7 — Make Outdoor-Air Inlet Adjustments; — End View
11 OPTIONAL NON-FUSED DISCONNECT — On units withthe optional non-fused disconnect, incoming power will bewired into the disconnect switch. Refer to Fig. 13 for wiringfor 100 and 200 amp disconnect switches. Units with anMOCP under 100 will use the 100 amp disconnect switch.Units with an MOCP over 10...
Page 12 - Table 3 — Heat Anticipator Settings; Step 8 — Install Outdoor-Air Hood —; UNIT; Fig. 18 — Outdoor-Air Hood Component Location; Fig. 17 — EconoMi$er Control Module Location
12 Table 3 — Heat Anticipator Settings *Heater kW is based on heater voltage of 208 v, 240 v, 380 v, 480 v, and 575 v. Step 8 — Install Outdoor-Air Hood — The same type of factory-installed hood is used on units with 25% airventilation and units with an EconoMi$er.NOTE: The hood top panel, upper and...
Page 13 - Fig. 19 — Seal Strip Location
13 COMMISSIONING — The EconoMi$er saves energy whenit uses outdoor air to provide free cooling instead of mechani-cal air conditioning. The EconoMi$er switchover strategy de-termines if the outdoor air is suitable for free cooling. TheEconoMi$er chooses the switchover strategy with the most en-ergy ...
Page 14 - If a potentiometer fails, its setting will default to the values; Table 4 — EconoMi$er Switchover Control Strategy
14 MECHANICAL COOLING LOCKOUT — Determine theoutdoor-air temperature at which you want the mechanicalcooling (compressors) to be disabled. Locate the mechanicalcooling lockout (MECH CLG LOCKOUT) potentiometer. Todisable this feature, turn the potentiometer counterclockwise(CCW) to the OFF position. ...
Page 15 - Step 9 — Install All Accessories —; After all the; Fig. 24 — Typical EconoMi$er Sensor Wiring
15 VENTILATION AIR (Minimum Position Set Up) — If ven-tilation air is not required, skip this section. If ventilation air isrequired, perform the following: 1. The indoor fan must be on to set the ventilation air. Either put the thermostat in the continuous fan mode orjumper the R and G terminals at...
Page 16 - Fig. 25 — Wind Baffle Details
16 Install Motormaster I Controls — Only one Motormaster Icontrol is required per unit. The Motormaster I control must beused in conjunction with the Accessory 0° F Low Ambient Kit(purchased separately). The Motormaster I device controls out-door fan no. 1 while outdoor fans no. 2 and 3 are sequence...
Page 17 - Fig. 26 — Motormaster® I Sensor Locations; Fig. 27 — Motormaster III Sensor Locations; LLSV; LPS; TB; TRAN —; 0TJ016 50TJ020
17 SENSORLOCATION HAIRPIN END SENSORLOCATION HAIRPIN END NOTE: All sensors are located on the eighth hairpin up from thebottom. Fig. 26 — Motormaster® I Sensor Locations SENSORLOCATION HAIRPIN END SENSORLOCATION HAIRPIN END NOTE: All sensors are located on the eighth hairpin up from thebottom. Fig. ...
Page 18 - Table 7 — Air Quantity Limits; Fig. 29 — Typical MoistureMiser Dehumidification
18 START-UP 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 applica-ble codes. Internal Wiring — Check all electrical connections in...
Page 23 - Base Unit Operation
23 Base Unit Operation COOLING, UNITS WITHOUT ECONOMI$ER — Whenthermostat calls for cooling, terminals G and Y1 are energized.The indoor (evaporator) fan contactor (IFC), and compressorcontactor no. 1 (C1) are energized and evaporator-fan motor,compressor no. 1 and condenser fans start. The condense...
Page 24 - When the humidistat is satisfied, the humidistat internal; SERVICE; Inspect unit interior at beginning of each heat-; Lubrication; Fig. 30 — MoistureMiser Operation Diagram
24 When the humidistat is satisfied, the humidistat internal switch opens, cutting power to and deenergizing the LLSVs.The refrigerant is routed back through the evaporators and thesub-cooler coils are removed from the refrigerant loops. Whenthe thermostat is satisfied, C1 and C2 are deenergized and...
Page 25 - Evaporator Fan Service and Replacement; Fig. 31 — Evaporator-Fan Pulley Alignment
25 the inlet of the compressor. The compressor should then be runfor 10 minutes, shut down, and the access valve opened untilno oil flows. This should be repeated twice to make sure theproper oil level has been achieved.FAN SHAFT BEARINGS — For size 016 units, bearings arepermanently lubricated. No ...
Page 26 - Motor Section
26 Belt Tension Adjustment — To adjust belt tension: 1. Loosen fan motor bolts.2. Adjust belt tension: a. Size 016 Units: Move motor mounting plate up or down for proper belt tension ( 1 / 2 in. deflection with one finger). b. Size 020-028 Units: Turn motor jacking bolt to move motor mounting plate ...
Page 27 - Table 15 — EconoMi$er Control Module Flash Code Identification
27 EconoMi$er Adjustment LED INDICATION — The EconoMi$er controller featuresan onboard diagnostic LED (light-emitting diode) that flashesto indicate its status. See Table 15 for flash codes. The control-ler also has terminal connections (REM LED) for remotelymounting an LED, if desired. The flash co...
Page 28 - Fig. 36 — Cooling Charging Chart
28 MOISTUREMISER SYSTEM CHARGING — The systemcharge for units with the MoistureMiser option is greater thanthat of the standard unit alone. The charge for units with thisoption is indicated on the unit nameplate drawing. To chargesystems using the MoistureMiser Dehumidification package,fully evacuat...
Page 29 - ELECTRIC HEAT
29 Fig. 37 — Typical Wiring Schematic (50TJ024, 208/230-3-60 Shown) ELECTRIC HEAT 208/240 v Amps 200/230 v kW A 71.3/82.3 25.7/34.2 B 117/135 42.2/56.1 C 156/180 56.2/74.8
Page 31 - LEGEND AND NOTES FOR FIG. 37 AND 38
31 LEGEND AND NOTES FOR FIG. 37 AND 38 LEGEND AHA — Adjustable Heat Anticipator BRK W/AT — Breaks with Amp Turns C — Contactor, Compressor CB — Circuit Breaker CC — Cooling Compensator CH — Crankcase Heater CLO — Compressor Lockout COMP — Compressor Motor CR — Control Relay DAT — Discharge Air Therm...
Page 32 - TROUBLESHOOTING; Refer to Tables 16-18 for troubleshooting details.; Table 16 — Cooling Service Analysis
32 TROUBLESHOOTING Refer to Tables 16-18 for troubleshooting details. Table 16 — Cooling Service Analysis LEGEND TXV — Thermostatic Expansion Valve PROBLEM CAUSE REMEDY Compressor andcondenser fanwill not start. Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse o...
Page 33 - Table 17 — EconoMi$er Troubleshooting
33 Table 17 — EconoMi$er Troubleshooting LEGEND Table 18 — MoistureMiser Dehumidification Subcooler Service Analysis PROBLEM POTENTIAL CAUSE REMEDY Damper Does NotOpen Indoor (Evaporator) Fan isOff Check to ensure that 24 vac is present at Terminal C1 (Common Power)on the IFC (Indoor [Evaporator] Fa...
Page 34 - SERVICE TRAINING
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 535-034 Printed in U.S.A. Form 50TJ-17SI Pg 34 2-01 Replaces: 50TJ-14SI Book 1 Tab 1b Copyright 2001 Carrier Cor poration SERVICE TRAI...
Page 36 - ELECTRICAL; VERIFY REFRIGERANT CHARGE USING CHARGING CHART ON PAGE 28.; GENERAL
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 535-034 Printed in U.S.A. Form 50TJ-17SI Pg CL-1 2-01 Replaces: 50TJ-14SI Book 1 Tab 1b Copyright 2001 Carrier Cor poration - - - - - ...