Carrier 50EQ- Manuals

Page 2 - inside; Exhaust Air Hood Installation

Table 1 — Physical Data UNIT MODEL 50EQ024 50EQ028 50EQ034 OPERATING WEIGHT (lb) Base Unit 3300 3900 4550 Base Unit with Economizer 3450 4075 4750 COMPRESSOR Serviceable, Reciprocating Hermetic No. .Model 2 06D824 2. 06D328 2 06D537 Oil (3GS or B1) pts (per Compr) 10 10 10 REFRIGERANT CHARGE R-22 R-...

Page 3 - Fig. 2 — Roof Curb Dimensions

Outdoor Air Inlet Screens — Be sure all outdoor air inlet screens are in place before operating unit. Condensate Drains — See Fig. 3 for drain loca tions. Condensate drain is open to atmosphere and must be trapped. Install a trapped drain line at con nection to be used. Trap must be at least 4 in....

Page 4 - mo; COMPRESSOR; END; conn; f iher access panel encf and 4 ft on; Fig. 3 — Base Unit Dimensions

st.ecT!îtc f£ATE=i ACCESS PANELS 3 mo 4^ • K 0 A l TERKATE R1EL&-P0»£R WiRlNG ALL. l»f:TS !NDOORA>!ifAN AMD «LTEft ACCESS PA MELS ALTERMATE CO'iTRCl. A'-SE ^OPEMiNG A-'CDNOmT COMPRESSOR END ACTES-yJATE DRAÎÎi 2|''iCO-ÎÎ'VPr COiWi miDE) OL'TCXÎOR A'RPLO'# - iMOOOSr AiftELOW Certt^,«cf dimecswR...

Page 6 - Fig. 8 — Field Power Wiring Connections

10. Reset thermostat at a setting above room tem perature. Compressor(s) will shut off. TO SHUT OFF UNIT — Set system selector switch at OFF position or reset thermostat at a setting above room temperature. Do not shut off unit circuit breakers except when unit is to be serviced. Crankcase heaters ...

Page 7 - sss; its; SO; CONTROL; SO; Fig. 10 — Nomograph for Determining

2. In Fig. 10, locate the percent humidity on the left-hand scale and the dry-bulb temperature on the right-hand scale. Example in Fig. 10 uses 60% RH and 66 F. 3. Draw a straight line connecting the 2 points. 4. Adjust the enthalpy control dial to the setting indicated on the control setting scale ...

Page 8 - é’e

Table 2 — Electrical Data, Units 50EQ024 UNIT MODEL NOMINAL VOLTS/PH/HZ 50EQ024400 200/3/60 50EQ024500 230/3/60 50EQ024600 460/3/60 VOLTAGE RANGE Min 180 207 414 Max 229 264 528 COMPR NO. 1, 2 RLA 49 3 44 4 LRA 170 153 77 OUTDOOR FAN MOTORS FLA* Qty 7 6 (ea) 6 6 (ea) 3 3 (ea) SEE LEGEND AND NOTES, P...

Page 10 - Do not manually

Indoor Air Fan Adjustment — Fixed fan speeds are shown in Table 1; note that second pulley is shipped with unit. For other fan speeds, select field- supplied motor or pulleys from Table 5. Table 5 — Indoor Air Fan Pulley Data UNIT 50EQ FAN RPM MOTOR PULLEY FAN PULLEY No. Grooves - Type - In. 024 028...

Page 11 - Fig. 12 — Economizer Damper Details; Do not manually operate damper motor. Damage to; Refrigerant Charge

# Connect the pressure gage to the service port on the suction line. Mount the temperature sensing de vice on the suction line and insulate it so that out door ambient temperature does not affect the reading. Indoor air cfm must be within the normal operating range of the unit. TO USE COOLING CHAR...

Page 12 - Table 6 — Air Quantity Limits; system operation; Fig

Fig. 14 — Charging Chart — Cooling, 50EQ028 3 3 41 Э a SUCTION 3 6C -INE TEMP 7 ERATURE 0 e (F) 0 -i 4 10 № 22 27 SUCTION LINE TEMPERATURE (C) Fig. 15 — Charging Chart — Cooling, 50EQ034 Table 6 — Air Quantity Limits UNIT MINIMUM CFM MAXIMUM CFM 50EQ STANDARD AIR STANDARD AIR 024 6,800 9,000 028 8,3...

Page 13 - Fig. 18 — Heating Cycle Operation Chart

# 10 20 30 40 SUCTION PRESSURE ( P S ) G ) 50 60 Fig. 18 — Heating Cycle Operation Chart 50EQ034 # Table 7 — Check Valve Functions — 50EQ CHECK VALVE IDENTIFICATION LOCATION COOLING CYCLE HEATING CYCLE COOLING CYCLE CHECK VALVE STUCK HEATING CYCLE CHECK VALVE STUCK A Outdoor Coil Header Closed Open ...

Page 14 - Fig. 19 — Typical Heat Pump Operation

Hot gas from compressor flows thru the 4-way valve and is directed to the outdoor coil header At the header it is condensed and subcooled thru converging circuits (4-2-1) Refrigerant leaves the outdoor coil by way of the check valve to the liquid line The refrigerant then flows thru the filter-drier...

Page 15 - TROUBLESHOOTING CHART, HEATING CYCLE

Page 16 - «vl; TROUBLESHOOTING CHART, COOLING CYCLE

O’ OD 0 0 7 T CJI fi) 0 1 CJI O C/) 0 a CJI o m O Oi CO (/) S -a (a <D fi: (D ^ 3 3 CD < s F* CD c C/) > «vl CO o a -0 C 71 CQ W 51 TROUBLESHOOTING CHART, COOLING CYCLE 8 O m