Page 3 - Table 3A — Physical Data, Under Ceiling Cooling Only Units; Step 1 — Complete Pre-Installation Checks; Fig. 2 — Removal of Mounting Brackets
3 Table 3A — Physical Data, Under Ceiling Cooling Only Units *Field reconfigured to 18,000 Btuh (1 1 / 2 tons). See Before Installa- tion section on this page for details. † The valve connection size is 7 / 8 inch. The recommended line size is 1 1 / 8 inch. Step 1 — Complete Pre-Installation Checks ...
Page 4 - Table 3B — Physical Data, Under Ceiling Heat Pump Units; Step 2 — Select Location —
4 Table 3B — Physical Data, Under Ceiling Heat Pump Units *Field reconfigured to 18,000 Btuh (1 1 / 2 tons). See Before Installa- tion section on page 3 for details. †The valve connection size is 7 / 8 inch. The recommended line size is 1 1 / 8 inch. 3. Remove inlet grilles from indoor unit by slidi...
Page 5 - Fig. 3 — Base Unit Dimensions
5 Fig. 3 — Base Unit Dimensions UNIT SIZE WEIGHT (lb) A B E F G Cooling Only Heat Pump ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm 024 108 110 4- 2 15 / 16 1294 3-10 1169 4- 1 5 / 8 1260 — — 1- 9 5 / 8 549 036 117 119 4-10 13 / 16 1493 4- 5 7 / 8 1368 4- 9 1 / 2 1459 — — 2- 1 1 / 2 648 048 149...
Page 6 - Step 3 — Mount Unit —; Fig. 4 — Fan Coil Unit Clearances
6 5. Run refrigerant piping as directly as possible and avoid any unnecessary turns or bends. 6. Condensate piping can be directed through the inside wall to an approved drain or straight outside. NOTE: The piping hole for condensate line must slope at a minimum pitch of 1 / 4 in. per foot to ensure...
Page 7 - Step 4 — Connect Refrigerant Piping —; under
7 TO INSTALL THERMOSTAT:If there is at least 3 / 8 in. of space between the back of indoor unit and wall: 1. Route thermostat wires (field-supplied) through slot in right side or rear panel of indoor unit (Fig. 3). 2. Route wires over refrigerant and drain piping as shown in Fig. 12. Step 4 — Connec...
Page 8 - Step 5 — Connect Condensate Drain Line —; Table 4A — Piston and Charge Combinations — Cooling Only Systems
8 f. Refer to the outdoor unit Installation, Start-Up and Service Instructions for additional information. g. Install a factory-supplied filter drier near the out- door unit. On heat pump systems, a bi-flow filter drier must be used. 3. Insulate and caulk wall openings to reduce air infiltra- tion a...
Page 9 - Fig. 13 — AccuRater Metering Device at Service
9 Fig. 10 — Mounting Hanging Brackets Fig. 11 — Hanging Fan Coil Unit *Field-supplied. Fig. 12 — Routing Wires Over Piping NOTE: Teflon Seal must face toward the outdoor heat pump unit. Fig. 13 — AccuRater Metering Device at Service Valve (Bypass Type Components), Heat Pump Systems Only
Page 10 - Step 6 — Make Electrical Connections —; Table 5 — Electrical Data*
10 Step 6 — Make Electrical Connections — Be sure field wiring complies with local building codes and NEC, and unit voltage is within limits shown in Table 5. Contact local power company for correction of improper line voltage. NOTE: Use copper wire only between disconnect switch(es) and unit.NOTE: ...
Page 12 - Step 7 — Install Thermostat —; Fig. 15 — Routing Drain Piping; Fig. 16 — Line Power Connections
12 Step 7 — Install Thermostat — These systems use a 3-speed thermostat. The thermostat monitors the system opera- tion and controls the operating mode. To change settings or re- fer to the thermostat Operating Instructions. Mount thermostat to a wall in the occupied space using 2 field-supplied scr...
Page 13 - Do not; Fig. 17 — Control Circuit Connections Arrangement
13 Step 8 — Make Connections Between Indoorand Outdoor Units — The thermostat is wired between the indoor and outdoor units to make the system complete.CHECK ACCURATER METERING DEVICE — The cor- rect AccuRater (bypass type) refrigerant control is required for system capacity optimization. An AccuRat...
Page 14 - Fig. 18 — Thermostats
14 AUTO COOL HEAT COOL HEAT AUTO FLAT THERMOSTAT (FLATSTAT) CARRIER COOLING ONLY HEAT & COOL (53DFS250-FS) SLIMLINE THERMOSTAT CARRIER HEAT PUMP COOLING ONLY HEAT & COOL (53DFS250-SL) 5-1-1 PROGRAMMABLE THERMOSTAT CARRIER COOLING ONLY HEAT & COOL (53DFST2-NP) Fig. 18 — Thermostats
Page 15 - Metering Device Components
15 Step 8 — Make Connections Between Indoorand Outdoor Units — The thermostat is wired between the indoor and outdoor units to make the system complete.CHECK ACCURATER METERING DEVICE — The cor- rect AccuRater (bypass type) refrigerant control is required for system capacity optimization. An AccuRat...
Page 16 - Fig. 20 — Cooling System Wiring Diagram
Page 17 - Fig. 21 — Heat Pump Wiring Diagram
Page 19 - Table 6 — Cleaning and Maintenance Schedule; monthly; Fig. 22 — Inserting Water into Drain Pan
19 SPECIAL OPERATION, HEATING — Outdoor cooling units may be matched with heat pump ceiling-suspended fan coil units to provide supplemental electric heat. All other operation is the same as a cooling-only system, except these units have heating capability as follows: When the room thermostat initia...
Page 20 - Fig. 23 — Cleaning Filters
20 Clean Indoor Unit Bottom Panel — If the bottom panel of the unit becomes dirty or smudged, wipe the outside of the panel with a soft dry cloth. Use a mild liquid detergent and wipe off carefully with a dry cloth. Clean Indoor Coil — To clean the coil, remove indoor unit bottom panel and vacuum th...
Page 21 - Table 7 — Troubleshooting
21 Table 7 — Troubleshooting *If fuse blows or circuit breaker trips again after first start attempt, DO NOT attempt to start system again. Contact your local dealer for assistance. †When outdoor temperature is approximately 55 F or below, indoor coil frosting may occur when system is operated in co...
Page 22 - SERVICE TRAINING; Packaged Service Training; • Unit Familiarization; Classroom Service Training; descriptions and schedules are in our catalog.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 02-40QA0007-SI Printed in U.S.A. Form 40QA-7SI Pg 22 706 3-06 Replaces: 40QA-5SI Book 1 4Tab 3d 2c Copyright 2006 Carrier Corporation SERVICE...
Page 23 - I. PRELIMINARY INFORMATION
START-UP CHECKLIST I. PRELIMINARY INFORMATION OUTDOOR UNIT: MODEL NO. ___________________INDOOR UNIT: MODEL NO. _____________________ SERIAL NO. ___________________________________SERIAL NO. ___________________________________ ACCESSORIES: ____________________________________________________________...
Page 24 - MEASURE AND RECORD THE:; STALLED IN SIGHT FROM THE UNIT?
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 02-40QA0007-SI Printed in U.S.A. Form 40QA-7SI Pg CL-2 706 3-06 Replaces: 40QA-5SI Copyright 2006 Carrier Corporation - - - - - - - - - - - -...