Carrier 012- Manuals

Page 2 - Fig. 1 — Roof Curb Dimensions

ROOF CURB ACCESSORY ‘‘A’’ UNIT SIZE 50DJ901371 1 8 -2 9 50LJQ008,012 [356] 50DJ901381 2 8 -0 9 [610] UNIT SIZE ‘‘F’’ POWER ‘‘G’’ CONTROL CONNECTOR PKG. ACC. 50LJQ008,012 1 9 [25] NPT or 2 9 [51] NPT 3 ⁄ 4 9 [19] NPT 50DJ901311 NOTES:1. Roof curb accessory is shipped unassembled.2. Insulated panels: ...

Page 3 - Step 4 — Rig and Place Unit —; Fig. 4 — Rigging Details; MAXIMUM ALLOWABLE DIFFERENCE; Fig. 2 — Unit Leveling Tolerance

Step 3 — Make Field Connection for Conden-sate Disposal — Units must have an external trap added. See Fig. 3. A 3 ⁄ 4 -in. FPT connection is located on the side of the unit. Use a trap at least 100 mm (4 in.) deep, and protectagainst freeze-up. If drain line is run to a drain, pitch line away from u...

Page 4 - LEGEND

Table 1A — Physical Data (SI) BASE UNIT 50LJQ 008 012 NOMINAL CAPACITY (kW) 23.2 28.8 OPERATING WEIGHT (kg) Unit 381 426 With Economizer 401 446 Roof Curb 101 101 COMPRESSOR Hermetic Quantity 2 2 Oil (ml) (each compressor) 1627 2071 REFRIGERANT TYPE R-22 Operating Charge (kg) Circuit 1 3.7 4.0 Circu...

Page 6 - Fig. 5 — Base Unit Dimensions

UNIT 50LJQ STD. UNIT WEIGHT ECONOMIZER WEIGHT CORNER WEIGHT ‘‘A’’ CORNER WEIGHT ‘‘B’’ CORNER WEIGHT ‘‘C’’ CORNER WEIGHT ‘‘D’’ ‘‘H’’ ‘‘J’’ ‘‘K’’ Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Ft-in. mm Ft-in. mm Ft-in. mm 008 840 381 44 20 182 83 156 71 231 105 271 123 2-0 7 ⁄ 8 632 3-5 5 ⁄ 16 1050 2-9 11 ⁄ 16 ...

Page 7 - Step 5 — Make Electrical Connections; Voltage to compressor terminals during operation must be; Fig. 6 — Power Wiring Connections

Step 5 — Make Electrical Connections Unit cabinet must have uninterrupted, unbroken elec-trical ground to minimize the possibility of personalinjury if an electrical fault should occur. This groundmay consist of electrical wire connected to unit groundlug in control compartment, or conduit approved ...

Page 11 - Table 2 — Electrical Data

Table 2 — Electrical Data UNIT 50LJQ NOMINAL V-PH-HZ VOLTAGE RANGE COMPR (each) OFM IFM ELECTRIC HEAT POWER SUPPLY ELECTRIC HEAT POWER WIRING FIG. NO. ELECTRIC HEAT PART NO. 50DJ901— Min Max RLA LRA FLA Hp FLA Nominal kW* FLA MCA MOCP† 008 220-3-50 198 242 15.3 82.0 1.5 1.5 5.8 — — 41.7 50 — — 9.5 2...

Page 12 - Table 3 — American/European Wire Conversions; Fig. 14 — Conduit Installation; Fig. 15 — Component Location

FIELD CONTROL WIRING — Install a Carrier-approvedaccessory thermostat assembly according to installation in-structions included with the accessory. Locate thermostat as-sembly on a solid wall in the conditioned space to sense av-erage temperature in accordance with thermostat installationinstruction...

Page 13 - Step 6 — Adjust Indoor-Fan Speed —; Fig. 16 — Field Wiring Connections; Fig. 17 — Field Control Wiring Raceway

Step 6 — Adjust Indoor-Fan Speed — Adjust in- door fan speed to meet jobsite conditions. For units with electric resistance heating, required mini- mum L/s (cfm) is 1062 (2250) for 50LJQ008 and 1416 (3000)or 50LJQ012, with the following exceptions. UNIT 50LJQ UNIT VOLTAGE HEATER kW UNIT CONFIG- URAT...

Page 14 - Table 5B — Fan Rpm at Motor Pulley Settings (English); MOTOR PULLEY TURNS OPEN

MOTOR MOUNTINGNUTS AND BOLTS Fig. 18 — Belt-Drive Motor Mounting Table 5A — Fan R/s at Motor Pulley Settings (SI) 50LJQ MOTOR PULLEY TURNS OPEN 0 1 ⁄ 2 1 1 1 ⁄ 2 2 2 1 ⁄ 2 3 3 1 ⁄ 2 4 4 1 ⁄ 2 5 008 14.70 14.26 13.82 13.38 12.94 12.50 12.06 11.62 11.18 10.74 10.30 012 15.00 14.65 14.30 13.95 13.60 13...

Page 18 - UNITS WITH ECONOMIZER; Fig. 20 — Typical Operating Sequence

NOTES:1. In heating mode, economizer damper blade will move to the mini- mum position, and unit will operate as described for units withouteconomizer, regardless of outdoor air temperature. 2. The temperatures given in the graph are for demonstration pur- poses only and may vary depending on which t...

Page 19 - Fig. 21 — Cleaning Outdoor Coil

position of the reversing valves and shuts off the outdoorfan. The electric heaters (if installed) will be energized. Onunits with economizer, the economizer damper blade will moveto the fully closed position. The unit continues to defrost until the coil temperature as measured by DFT2 reaches 65 F ...

Page 20 - Amount of refrigerant charge

CONDENSATE DRAIN — Check and clean each year atstart of cooling season. In winter, keep drain dry or protectagainst freeze-up. FILTERS — Clean or replace at start of each heating andcooling season, or more often if operating conditions requireit. Replacement filters must be same dimensions as origin...

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User Manual Carrier 012

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Manual Carrier 012

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