Carrier SEER 48ES- Manuals

8 1 2 3 4 A08015 DETAIL A (914 mm) A08487 SMALL CABINET LARGE CABINET Unit * 024 030 036 Unit * 042 048 060 lb kg lb kg lb kg lb kg lb kg lb kg Rigging Weight 292 133 297 135 307 139 Rigging Weight 398 181 406 184 428 194 * For 460 volt units add 14 lb (6.35 kg) to the rigging weight.NOTE: See dimen...

10 Table 2 – Maximum Gas Flow Capacity* NOMINAL IRON PIPE SIZE (IN.) INTERNAL DIAMETER (IN.) LENGTH OF PIPE FT (m)† 10 (3) 20 (6) 30 (9) 40 (12) 50 (15) 60 (18) 70 (21) 80 (24) 90 (27) 100 (30) 125 (38) 150 (46) 175 (53) 200 (61) 1/2 .622 175 120 97 82 73 66 61 57 53 50 44 40 — — 3/4 .824 360 250 20...

11 Adhere to the following criteria when selecting, sizing, andinstalling the duct system: 1. Units are shipped for horizontal duct installation (by removing duct covers). 2. Select and size ductwork, supply--air registers, and return--air grilles according to American Society of Heating, Refrigerat...

12 4. Connect field L1 to black wire on connection 11 of the compressor contactor. 5. Connect field wire L3 to yellow wire on connection 13 of the compressor contactor. 6. Connect field wire L2 to blue wire from compressor. Special Procedures for 208--v Operation ELECTRICAL SHOCK HAZARD Failure to f...

13 Use the Start--Up Checklist supplied at the end of this book andproceed as follows to inspect and prepare the unit for initial start--up: 1. Remove access panel.2. Read and follow instructions on all DANGER, WARNING, CAUTION, and INFORMATION labels attached to, or shipped with unit. 3. Make the f...

14 3. The induced--draft motor will start.4. On a call for heating, the main burner should light within 5 sec. of the sparker being energized. If the burners do notlight, there is a 22--sec. delay before another 5--sec. try. Ifthe burners still do not light, this sequence is repeated. If the burners...

15 4. 112.5 x 1050 = 118,125 Btuh input. If the desired gas input is 115,000 Btuh, only a minor change in the manifold pressure is required.Observe manifold pressure and proceed as follows to adjust gas input: 1. Remove regulator cover screw over plastic adjustment screw on gas valve (See Fig. 14). ...

19 Limit Switches Normally closed limit switch (LS) completes the control circuit. Should the leaving--air temperature rise above the maximumallowable temperature, the limit switch opens and the control circuit “breaks.” Any interruption in the control circuit instantlycloses the gas valve and stops...

20 NOTE : If the problem causing the inaccurate readings is a refrigerant leak, refer to the Check for Refrigerant Leaks section. Indoor Airflow and Airflow Adjustments UNIT OPERATION HAZARD Failure to follow this caution may result in unit damage.For cooling operation, the recommended airflow is 35...

27 Table 10 – 48ES Wet Coil Pressure Drop (IN. W.C.) UNIT SIZE STANDARD CFM (S.C.F.M) 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 024 0.030 0.037 0.044 0.053 0.063 --- --- --- --- --- --- --- --- --- --- 030 --- 0.037 0.044 0.053 0.063 0.072 0.081 0.105 --- --- --- --- ---...

29 FRONT ACCESSPANEL A08519 Fig. 20 -- Unit Access Panel BLOWER HOUSING 2 SETSCREWS (HIDDEN) C99085 Fig. 21 -- Removal of Motor and Blower Wheel A07680 Fig. 22 -- Burner Rack Removed Outdoor Fan UNIT OPERATION HAZARD Failure to follow this caution may result in damage to unit components.Keep the con...

30 MOTOR FAN GRILLE MOTOR SHAFT A A08505 MAX DISTANCE BETWEEN FAN HUB AND END OF MOTOR SHAFT SIZE “A” IN. MM 024 7.3 185 030 7.3 185 036 7.3 185 042 7.6 193 048 7.6 193 060 7.6 193 Fig. 23 -- Fan Blade Position Gas Input The gas input does not require checking unless improper heating performance is ...

31 pressure. The relief port has an operating range between 550(26.34 kPa) and 625 psi (29.93 kPa) differential pressure. EXPLOSION, ENVIRONMENTAL SAFETY HAZARD Failure to follow this warning could result in personal injury, death or equipment damage.This system uses Puron (R--410A) refrigerant whic...

33 Table 11 – Troubleshooting Chart SYMPTOM CAUSE REMEDY Compressor and condenser fan will not start. Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer, or high--pressure, loss--of--charge or low--pressure sw...