Carrier 40QA024-060 manuale d’uso

Manufacturer reserves the right to disco ntinue, or change at any time, specifications or de signs without notice and without inc urring obligations. Catalog No . 02-40QA0007-SI Printed in U.S .A. Fo rm 40QA-7SI Pg 1 706 3 -06 Replaces: 40QA- 5SI Book 1 4 Ta b 3 d 2 c Installation, Star t-Up and Ser vice Instructions CONTENTS Page SAFETY CONSIDERA [...]

2 T able 1 — Syst em Matches *Units must be field reconfigured for 1 1 / 2 ton (18,000 Btuh) operation. See Bef ore Installation sec- tion on page 3 for details . NO TE: Numbers in ( ) indicate quantities when ther e is more than one fan coil unit in the system. Ensure unit operation within the application guidelines shown in T able 2. When insta[...]

3 T able 3A — Physical Data, Unde r 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 valv e connection size is 7 / 8 inch. The recommended line size is 1 1 / 8 inch. Step 1 — Complete Pre-Installation Chec ks UN P A C K UNI T — S tore fan coil uni[...]

4 T able 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 valv e connection size is 7 / 8 inch. The recommended line size is 1 1 / 8 inch. 3. Remove inlet grilles from indoor unit by sliding for- ward. Reinstall prior to unit start[...]

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 / 2 648 048 149 151 5-11 9 / 16 1817 5- 6 5 / 8 1692 5-[...]

6 5. Run refrigerant piping as directly as possi ble and avoid any unnecessary turns or bends. 6. Condensate piping can b e directed t hrough the insi de 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 proper drainage. If proper pitch cannot be ac[...]

7 TO I NST ALL THERMOST A T : If there is at least 3 / 8 in. of space between the back of indoor unit and wall: 1. Route thermostat wires (field-supplied) throu gh slot in right side or rear panel of indoo r unit (Fig. 3). 2. Route wires over refrigerant and drain piping as shown in Fig. 12. Ste p 4 — Connect Refrigerant Piping — Fan coil units[...]

8 f. Refer to the outdoor unit Installation, Start-Up and Service Instructions for add itional 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 ope nings to reduce air in filtra- tion and refrigerant pipe vibrations on structure. 4[...]

9 Fig. 10 — Mounting Hanging Brac kets Fig. 11 — Hanging F a n Coil Unit *Field-supplied. Fig. 12 — Routing Wires Over Piping NO TE: T eflon Seal must face tow ard the outdoor heat p ump unit. Fig. 13 — AccuRate r Metering De vice at Service V alve (Bypass T ype Components), Heat Pump Systems Only[...]

10 Step 6 — Make Electrical Con nections — Be sure field wiring complies with local building codes and NEC, and unit voltage is within limits shown in T able 5. Contact local power company for correction of improper line voltage. NOTE: Use copper wire only between disconnect switch(es) and unit. NOTE: Install branch circuit disconnect of adequa[...]

11 Fig. 14 — Component Location (T ypical Ceiling-Suspended System) LEGEND *Standard. †Accessory item. **Field supplied. ††Insulate for heat pump application. NO TE S: 1. All piping must follo w standard refr igerant piping techniques. 2. All wiring must comply with the applicab le local and national codes. 3. Liquid line need not be insula[...]

12 Step 7 — Install Thermostat — These systems use a 3-speed thermostat. The thermostat monitors the system opera- tion and controls the operating mode. T o change settings or re- fer to the thermostat Operating Instructions. Mount thermostat to a wall in the occupied space using 2 field-supplied screws. Locate the thermostat in an area that is[...]

13 Step 8 — Make Connections Between Indoor and Outdoor Units — The thermostat is wired between the indoor and outdoor units to make the system com plete. CHECK ACCURA TER METERING DEVICE — Th e co r- rect AccuRater (bypass type) refri gerant control is required for system capacity optimization. An AccuRater device (see Fig. 19) is supplied w[...]

14 AUTO COOL HEA T COOL HEA T AUTO FLA T THERMO ST A T (FLA TST A T) CARRIER COOLING ONL Y HEA T & COOL (53DFS250-FS) SLIMLINE THERMOST A T CARRIER HEA T PUMP COOLING ONL Y HEA T & COOL (53DFS250-SL ) 5-1-1 PROGRAMMABLE THERMOST A T CARRI ER COOLING ONL Y HEA T & COOL (53DFST2-NP) Fig. 18 — Thermostats[...]

15 Step 8 — Make Connections Between Indoor and Outdoor Units — The thermostat is wired between the indoor and outdoor units to make the system com plete. CHECK ACCURA TER METERING DEVICE — Th e co r- rect AccuRater (bypass type) refri gerant control is required for system capacity optimization. An AccuRater device (see Fig. 19) is supplied w[...]

16 Fig. 20 — Coolin g System Wiring Diagram[...]

17 Fig. 21 — He at Pump Wiring Dia gram[...]

18 ST AR T -UP Make the following checks and complete the Start-Up Checklist on page CL-1 before system start-up. Also refer to the condensing unit Installation, S tart-Up and Service Instruc- tions for system start-up instructions and refrigerant charging methods. 1. Check condensate drainage system: a. Remove grille and frame from the unit. b. On[...]

19 SPECIAL OPERA TION, HEA TING — 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 coolin g-only system, except these u nits have heating capability as follows: When the room thermostat initiates a call for heating, the electric heater [...]

20 Clean Indoo r 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 deter gent and wipe off carefully with a dry cloth. Clean Indoo r Coil — T o clean the coil, remove indoor unit bottom panel and vacuum the coil fins, using care not to bend or dam[...]

21 T able 7 — T r oubleshooting *If fuse blo w s or circuit breaker trips again after firs t star t attempt, DO NO T attempt to star t system again. Contact your local dealer f or assistance. †When outdoor temperature is approximately 55 F or below , indoor coil frosting may occur when system is operated in cooling or maximum dehumidification m[...]

Manufacturer reserves the right to disco ntinue, or change at any time, specificatio ns or designs without notice and without inc urring obligations. Catalog No . 02-40QA0007-SI Printed in U.S .A. Form 40QA-7SI Pg 22 706 3-06 Replaces: 40QA -5SI Book 1 4 Ta b 3 d 2 c Copy right 2006 Carrier Cor poration SER VICE TRA INING ST A RT -UP CHECKLIST Pack[...]

ST A RT -UP CHECKLIST I. PRELIMINAR Y INFORMA TION OUTDOOR UNIT : MODEL NO. ___________________ INDOOR UNIT : MODEL NO. _____________________ SERIAL NO. ___________________________________ SERIAL NO. ___________________________________ ACCESSORIES: __________________________________________________________________________________ PISTONS: INDOOR SI[...]

Manufacturer reserves the right to disco ntinue, or change at any time, specificatio ns or designs without notice and without inc urring obligations. Catalog No . 02-40QA0007-SI Printed in U. S.A. F orm 40QA-7SI Pg CL-2 706 3-06 Replaces: 40QA-5SI Copy right 2006 Carrier Cor poration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -[...]