Carrier 50CR- Manuals

Page 2 - except

2 SAFETY CONSIDERATIONS Installation and servicing of this equipment can be hazardous due to mechanical and electrical components. Only trained and qualifiedpersonnel should install, repair, or service this equipment.Untrained personnel can perform basic maintenance functions suchas cleaning and rep...

Page 3 - Roof Curb for Small Cabinet; UNIT SIZE

3 Gask et around outer edge Insulateddeck pan Gask et around duct S/A R/A HVAC unit base *Gask eting outer flange Flashing field supplied Roofing material field supplied Cant str ip field supplied *Provided with roof curb Roof Ductwork field supplied Insulation (field supplied) Roof curb* Wood naile...

Page 4 - ode

4 A B C MAXIMUM ALLOWABLE DIFFERENCE (in.) A-B B-C A-C 1/4 1/4 1/4 C99065 Fig. 3 -- Unit Leveling Tolerances OPTIONAL RETURN AIR OPENING OPTIONAL SUPPLY AIR OPENING EVAP. COIL COND. COIL 2" C99096 Fig. 4 -- Slab Mounting Detail A06114 Fig. 5 -- Corner Weights (Lbs.) CORNER WEIGHTS (SMALL CABINET...

Page 8 - DETAIL

8 DETAIL A C03017 Fig. 8 -- Rigging Bracket Under Unit Rain Lip A06113 UNIT SIZE MAXIMUM SHIPPING WEIGHT Lb Kg 50CR024 372 169 50CR030 372 169 50CR036 395 179 50CR042 462 210 50CR048 485 220 50CR060 521 236 Fig. 9 -- Suggested Rigging 50C R50C R

Page 10 - TOP COVER

10 Table 1—Physical Data -- Unit 50CR UNIT SIZE 024 030 036 042 048 060 NOMINAL CAPACITY (ton) 2 2--1/2 3 3--1/2 4 5 OPERATING WEIGHT (lb.) 350 350 373 440 463 499 Compressor Scroll Refrigerant (R-- 410A) Quantity (lb.) 7.5 8 9.5 10.8 11.5 14.0 REFRIGERANT METERING DEVICE TXV ORIFICE OD (in.) 0.035 ...

Page 11 - Step 7—Install Electrical Connections; WARNING; UNIT COMPONENT DAMAGE HAZARD; CAUTION

11 Duct Covers A05301 Fig. 11 -- 50CR with Duct Covers On 1” (25mm) MIN. 2” (50mm) MIN. TRAPOUTLET C99013 Fig. 12 -- Condensate Trap Step 7—Install Electrical Connections ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death.The unit cabinet must have an uni...

Page 16 - GROUND SCREW; NOTE

16 GROUND SCREW (IN SPLICE BOX) BLU YEL BLK GROUND LEAD SINGLE-PHASECONNECTIONSTO DISCONNECTPER NEC 3-PHASECONNECTIONS LEGENDNEC – National Electrical Code Field WiringSplice Connections NOTE: Use copper wire only. L1 L3 L2 C99057 Fig. 17 -- Line Power Connections A05303 Fig. 18 -- Control Plate The...

Page 21 - HPS – High Pressure Switch; LEGEND; HPS – High Pressure Switch

21 COMPRESSOR ACCUMULATOR OUTDOOR COIL INDOOR COIL LCS LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater ® Metering De vice Arrow indicates direction of flo w TXV in Metering Position Bypass Position HP S C03011 Fig. 20 -- Typical Heat Pump Operation, Cooling Mode COMPRESSOR AC...

Page 23 - Table 3—; Table 4—; FILTER SIZE; Table 5—; CFM

23 75 (24) 82 (28) 85 (29) 95 (35) 105 (41) Pressure (psig) 5 10 15 20 25 Pressure (kPa) 3 6 8 11 14 024 10.3 ( 5.7 ) 9.8 ( 5.4 ) 9.4 ( 5.2 ) 9 ( 5 ) 8.6 ( 4.7 ) 189 61 56 51 46 41 1303 16 13 11 8 5 030 9.3 ( 5.2 ) 8.8 ( 4.9 ) 8.6 ( 4.8 ) 7.8 ( 4.3 ) 7 ( 3.9 ) 196 63 58 53 48 43 1351 17 15 12 9 6 03...

Page 24 - Table 6—; MAINTENANCE; ELECTRICAL SHOCK HAZARD; UNIT OPERATION HAZARD

24 Table 6— Electric Heat Pressure Drop TableLarge Cabinet: 042--060 CFM 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 5kw 0.00 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 7.2 kw 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0...

Page 25 - Infinity Top

25 The minimum maintenance requirements for this equipment are asfollows: 1. Inspect air filter(s) each month. Clean or replace when necessary. 2. Inspect indoor coil, drain pan, and condensate drain each cooling season for cleanliness. Clean when necessary. 3. Inspect blower motor and wheel for cle...

Page 26 - Balance Point Worksheet; Building Heat Loss, 1000BTUH; Based on Entering Indoor Air of 70 Deg. F and Rated CFM; Step 6—Refrigerant Circuit; obstructions, and that the air filter is clean.; Step 9—Pressure Switches; systems. R--22 pressure switches must not be used as replacements

26 Balance Point Worksheet 0 10 20 30 40 50 60 70 -20 -10 0 10 20 30 40 50 60 Outdoor Air Temp (Deg F) Building Heat Loss, 1000BTUH Unit Integrated Heating Capacity, 1000BTUH 060 048 042 036 030 024 Based on Entering Indoor Air of 70 Deg. F and Rated CFM C03008 Fig. 25 -- 50CR Balance Point Workshee...

Page 27 - The Copeland scroll compressor uses Mobil 3MA POE oil. This; refrigerant cylinders contain a dip tube to allow liquid

27 airflow across indoor coil, dirty filters, etc. It opens on a pressuredrop at about 20 psig. If system pressure is above this, switch should be closed. To check switch: 1. Turn off all power to unit.2. Disconnect leads on switch.3. Apply ohm meter leads across switch. You should have continuity o...

Page 28 - : Because these switches are attached to refrigeration system; : There is only one stub tube used with liquid header, and on; TROUBLESHOOTING; Unit Top; Detail A

28 Step 14—System Information LOSS--OF--CHARGE SWITCHThe loss of charge switch is a protective device wired into control circuit (low voltage). It shuts off the compressor if abnormally lowpressures are present in the refrigeration circuit. NOTE : Because these switches are attached to refrigeration...