Installation guide

ManualsBrandsCarrier ManualsHeating & cooling combined unitOfficial Carrier heat pump

Turn to the Expertg

Installation Instructions

NOTE: Read the entire instruction manual before starting the

installation.

NOTE: Installer: Make sure the Owner's Manual and Service

Instructions are left with the unit after installation,

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS ......................... 1

INTRODUCTION ................................... 2

RECEIVING AND INSTALLATION ................. 2-16

Check Equipment .................................. 2

Identify Unit .................................... 2

Inspect Shipment ................................. 2

Provide Unit Support ............................... 2

Roof Curb ...................................... 2

Slab Mount ..................................... 2

Ground Mount .................................. 2

Provide Clearances ................................. 2

Rig and Place Unit ................................. 2

Inspection ...................................... 2

Installation ...................................... 2

Select and Install Ductwork ........................... 5

Converting Horizontal Discharge Units to Downflow

(Vertical) Discharge Units .......................... 7

Provide for Condensate Disposal ...................... 7

Install Electrical Connections ......................... 7

High-Voltage Connections ......................... 8

Routing Power Leads into Unit ...................... 8

Connecting Ground lead to Ground Lug ............... 8

Routing Control Power Wires (24-v) ................. 8

Easy Select _ . ................................... 9

50XZ Sequence of Operation ...................... 15

Special Procedures for 208-V Operation .............. 16

PRE-START-UP ................................... 16

START-UP ..................................... 16-19

50XZ Start-Up ................................... 16

Check for Refrigerant Leaks ......................... 17

Start-Up Adjustments ............................. 17

Check Cooling & Heating Operation ................. 17

Checking & Adjusting Refrigerant Charge ............ 18

Refrigerant Charge .............................. 18

No Charge ..................................... 18

Low Charge Cooling ............................. 18

To Use Cooling Charging Charts .................... 18

Indoor Airflow & Airflow Adjustments .............. 18

Defrost Control ................................... 19

Quiet Shift ..................................... 19

Defrost ....................................... 19

MAINTENANCE ................................ 20-25

Air Filter ........................................ 20

Indoor Blower and Motor ........................... 20

Outdoor Coil, Indoor Coil, & Condensate Drain Pan ...... 20

Outdoor Fan ..................................... 23

Electrical Controls and Wiring ....................... 23

Refrigerant Circuit ................................. 23

C99088

Fig. 1 - Unit 50XZ

Indoor Airflow ................................... 23

Metering Devices- TXV & AccuRater TM Piston .......... 23

Pressure Switches ................................. 24

Loss of Charge Switch ............................. 24

High Pressure Switch .............................. 24

Copeland Scroll compressor (Puron Refrigerant) ......... 24

Refrigerant System ................................ 24

Refrigerant .................................... 24

Compressor Oil ................................. 24

Servicing Systems on Roofs with Synthetic Materials .... 24

Liquid Line Filter Drier ........................... 25

Puron® (R-410A) Refrigerant Charging ............. 25

System Information ................................ 25

Loss of Charge Switch ............................ 25

Check Defrost Thermostat ......................... 25

TROUBLESHOOTING .............................. 25

START-UP CHECKLIST ............................ 25

SAFETY CONSIDERATIONS

Improper installation adjustment, alteration, service, maintenance,

or use can cause explosion, fire, electrical shock, or other

conditions which may cause death, personal injury, or property

damage. Consult a qualified installer, service agency, or your

distributor or branch for information or assistance. The qualified

installer or agency must use factory-authorized kits or accessories

when modifying this product Refer to the individual instructions

packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,

and work gloves. Use quenching cloth for brazing operations.

Have a fire extinguisher available. Read these instructions

thoroughly and follow all warnings or cautions included in

Summary of content (30 pages)

PAGE 1
® Turn to the Expertg Installation Instructions NOTE: Read the entire instruction manual before starting the installation. NOTE: Installer: Make sure the Owner's Manual and Service Instructions are left with the unit after installation, TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS ......................... 1 INTRODUCTION ................................... 2 RECEIVING AND INSTALLATION ................. 2-16 Check Equipment .................................. 2 Identify Unit ...........................
PAGE 2
literature andattached to the current editions In Canada unit. Consult of the National refer to the current local building Electrical editions Code (NEC) codes, the NFPA of the Canadian 70. electrical Code CSA C22A. Recognize safety IMPORTANT: The gasketing for a watertight seal. Install roof curb. Improperly of the unit to the roof curb is critical gasketing applied material gasketing supplied with the also can result in air leaks and poor unit performance. information.
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OXZOR4 5460 861 [359] UNIT ELECTRICAL CHARACTERISTICS UNIT 208 230 I 60 WT UNIT KG IIAII 5 DO] Z 320 1451 940313702] 3683[145] 4064[160] 3 60 360 1633 991113902] 5588[220] 3874[153] 4470[176] 50XZO38 208/230 I 60, 2031230 3 60 403 1828 1041R[4102] 50801200] 3556[140] 4470[176] WEIGHT .... 2 CLEARANCES TO COMBUSTIBLE MATL. LBS/HG .... 3 ....
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UNIT ELECTRICAL CHARACTERISTICS UNIT WT LBS HG UNIT HEIGHT CENTER 208 230 I 60, 208/230 3 60 4Sa 206 10917[4298] 50XZO48 208 230 I 60, 208/230 3 60 479 217 11425[4_983 4953[1953 SOXZO6O 208 230 I 60, 208/230 3 60 499 226 1193 5334[21 III .... WEIGHT 2 REQUIRED CLEARANCES LBS/KG .... 3 ....
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1 2 Y C00071 RIGGING WEIGHTS (SMALL CABINET) 024 Unit Rigging Weight RIGGING WEIGHTS (LARGE CABINET) 030 036 042 Ib kg Ib kg Ib kg Unit 331 150 371 168 414 188 Rigging Weight Fig. 4 - Rigging 3. Place each of the 4 metal holds in the composite strapping a. Open lever of tension c. Pull strapping into the rigging around bottom (ratchet type). through tension buckle perimeter as shown tension buckle field-supplied safety latch, lift lever, clevis or hook in Fig.
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/ / / base ,,,_crew'_._ / (NOTEA) _ *Gasketin;..._ _ I II1_11t Flashing field I supplied _ _n_il_ Roofcurb* II_i;llltJ \ _, field supplied Roof Curb for Small II ii l" Roofing matei'at \ /l_!i:llll _ Duct we rk field supplied c__tllt Cabinet Roof Curb for Note A:When unit mounting screw is used retainer bracket must also be used. Supply (BxC) Note Insulation(field supplied) j / Large Cabinet A:When unit mounting screw is used retainer bracket must also be used.
PAGE 7
2. Remove horizontal duct covers to access bottom return and supply knock out panels. 3. Use a screwdriver and hammer to remove the panels in the bottom of the unit base. NOTE: These panels are held in place with tabs similar to an electrical knockout. MAXIMUM ALLOWABLE DIFFERENCE in. (mm) B 4. Reinstall the horizontal duct covers (Fig. 11) to block off the horizontal air openings. A-B B-C ArC 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) NOTE: Avoid abrupt duct size increases and reductions.
PAGE 8
DETAIL A SCALE 0.250 TIGHTEN STRAPPING SECURELY WITH TENSION BUCKLE INSTALL RIGGING SEE DETAIL SAFETY CLEVIS STRAPS TO AT 4 RIGGING BRACKETS PLACE RIGGING BRACKET ASSEMBLY IN 4 HAND HOLES AND INSTALL TIE DOWN STRAP AROUND PERIMETER OF UNIT AND THROUGH SPACE IN BRACKET ASSEMBLY A C99075 U NIT 50XZ A B in, 19.0 19.0 20.0 20.0 20.0 2t .0 024 030 036 042 048 060 in, 18.25 18.25 19.0 2t .25 2t .25 20.0 mm 482.6 482.6 508.0 508.0 508.0 533.4 Fig.
PAGE 9
Table UNIT SIZE NOMINAL CAPACITY (ton) SHIPPING WEIGHT (Ib) (kg) COMPRESSOR QUANTITY TYPE REFRIGERANT REFRIGERANT METERING DEVICE Rows... LOSS- OF- CHARGE/LOW- 0.038 (.89) (2) 0.038 (.97) (.97) 2...21 2...21 2...21 2...21 13.6 15.4 17.4 19.3 2700 22 2700 22 2800 22 2800 22 3300 22 3300 22 559 1/8 (825) 559 1/8 (825) 559 1/8 (825) 559 1/8 (825) 559 1/4 (1100) 559 1/4 (1100) 3...15 3...15 4...15 3...15 4...15 4...15 3.7 3.7 3.7 4.7 4.7 5.
PAGE 10
INDOOR {?i;i:/_: THERMOSTAT RETURN FROM POWER _ SOURCE TOP COVER DISCONNECT PER NEC* *NEC - NATIONAL ELECTRICAL CODE C00063 Fig. 10 - Typical Installation o Duct Covers C00092 Fig. 11 - 50XZ 1" (25 mm) with Duct Covers On MIN. A08001 Fig.
PAGE 11
OPM FOR 042-060 UNITS ONLY COMP BEN YEL- CTD (TI.
PAGE 12
SCHEMATIC FIELD 2081_0-340 DR _YEL -- POWER [OUIP_GND FOR 042-060 YEL BL_ UNITS ONLY OHM COUP FOR 042-060 UNITS ONLY GRR-YEL YEL _ CTB (T1,T2) CO,_PRESSOR BELAY BET Oft,Of2 [_ TEL PL4-4 " _ RVS CI CI CLOSES TSAT OPENS LAST BFROST f:3O CYCLE _4AXIMU_ f:GO T:90 T:120 BLK 32 A_ MANUAL R[SETL_ I I I 6RN_YEL GRN-YEL / BRN -- TO C BRN-- TO OB BRN-- ON G AUTO SW TO C TO TRANS 5 ire AMP TO ICM / Y TO SECI b, TO TRANS ' SUPPL H SUPL HEAT E TO HR SUPPL
PAGE 13
HIGH VOLTAGE POWER LEADS (SEE UNITWIRING LABEL) ( Io_ <[ -- - Lc. - -SSUPP _[ m = FIELD-SUPPLIED FUSED DISCONNECT GND CONTROL °- "LOWER BOX 'O' 2LK2_)O, --YE--L&YL GROG) LOW-VOLTAGE POWER LEADS(SEE UNIT WIRING LABEL) SPLICE $ $ O. RED,R± O, O BRN--(C).Z WH_LW2) b O G#A_2 b , O O.R_0£ '1:)' ,THERMOSTAT (TYPICAL) :£ 24 V Circuit Breaker BOX 24 Volt Com t LEGEND C99070 Field Control-Voltage Wiring Field High-Voltage Wiring Fig. 17 - Control Wiring Plate ....... A08472 Fig.
PAGE 14
(1.) LO speed-Factory mode airflow. setting, 50 percent (2.) MED speed-Move connector cooling mode airflow. (3.) HI speed-Move g. connector cooling to MED, TRANSFORMER CONTAINS A MANUAL RESET OVERCURRENT PROTECTOR 65 percent to HI, 100 percent IT WILL NOT AUTOMATICALLY cooling mode airflow (See Fig. 19, F as indicated).
PAGE 15
ACCESSORY INSTALLATION a. ACCESSORY close its contacts. ELECTRIC Electric heaters per instructions may be installed with the 50XZ units supplied with electric heater package. See unit rating plate for factory-approved kits. b. AUXILIARY electric standard The AUX and HUM terminals on the Easy Select Board are tied directly to the G terminal, and provide a 24-v. AIR CLEANER Sensor models are capable indoor system control 50XZ SEQUENCE (See Air Cleaner d.
PAGE 16
either heating ordefrost modes, themotor will modify itsairflow output, if necessary, toprovide anairflow whichisdefined assafeforthe operation oftheelectric heater during heat pump operation. Thatairflow isthegreater oftheheat pump heating airflow andtheelectric heater only airflow. h.
PAGE 17
wireY)andECMboard (through unitwireG) across the24-v.secondary oftransformer (TRAN). Thermidistat orThermostat andHumidistat: When theroom temperature rises toapointthatis slightly above thecooling control setting ofthe thermostat, thethermostat completes thecircuit between thermostat terminal Rtoterminals Y,O, DH,andG.These completed circuits through the thermostat connect contactor coil(C)(through unit wireY)andECMboard (though unitwireG) across the24-v.secondary oftransformer (TRANS). (3.
PAGE 18
3. When using an automatic changeover room thermostat, REFRIGERANT place both SYSTEM or MODE control and FAN mode switches in AUTO positions. Observe that unit operates in Cooling mode when temperature control is set to "call for Cooling" (below room temperature), and unit operates in Heating mode when temperature control is set to "call for Heating" (above IMPORTANT: Three-phase, oriented. Unit 3-phase power the internal power nmst be scroll checked lead orientation.
PAGE 19
Tables 3 & 4 show both these tables to determine NOTE: Be sure and adjusted Airflow can be changed Select board. Motor) utilizes ID Blower and cooling by changing airflows. for the system Refer to being installed. The defrost control is a time/temperature control which includes a field-selectable time period (DIP switch 1 and 2 on the board) the set up pins on the Easy between defrost cycles of 30, 60, 90, or 120 minutes (factory set at 30 minutes).
PAGE 20
If it is desirable to observe a complete defrost in warmer the defrost thermostat must be closed as follows. 1. Turn off power 2. Disconnect board. to outdoor outdoor 4. After unit. (See Fig. 27) Tape to prevent a few temperature should at approximately line or remainder from OF2 drop Heating below closing liquid point line of defrost 30 ° F) (- 1 ° C). defrost until defrost (27°C) thermostat coil temperature at liquid cycle time.
PAGE 21
Table FILTER SIZE 20X20Xl 508X508X25 20X24X1 508x610x25 24X30Xl 610x762x25 6 - Filter Table (in. wc) 1300 CFM 1400 1500 500 600 700 800 900 1000 1100 1200 0.07 0.08 0.10 0.12 0.13 0.14 0.15 0.09 0.10 0.11 0.13 0.14 0.15 0.15 0.07 0.08 0.09 0.10 Heat Pressure Drop 024-036 cfm 7 - Electric Small 500 0.00 0.00 0.00 0.00 0.00 600 0.00 0.00 0.00 0.00 0.00 700 0.00 0.00 0.00 0.00 0.02 800 0.00 0.00 0.00 0.02 0.04 1000 0.00 0.00 0.02 0.06 0.
PAGE 22
Required Subcooting Outdoor Model oF Ambient (oC) Required Temperature Required 82 (28) 85 (29) 95 (35) 105 (41) (R-410A) Required Subcooling (°C) 10 15 20 25 (kPa) 3 6 8 11 14 56 51 46 41 1303 16 13 11 8 5 7(3.9) 196 63 58 53 48 43 1351 17 15 12 9 6 14.3(7.9) 203 66 61 56 51 46 1399 19 16 13 10 8 12.6(7) 210 68 63 58 53 48 1448 20 17 14 11 9 15,7(8.7) 14.8(8,2) 217 70 65 60 55 50 1496 21 18 15 13 10 14,5(8.1) 11.
PAGE 23
O 'n r_o --<>--- Quiet Shift Speedup Pins Defrost interval DI P switches A08020 Fig. 27 - Defrost Step 4 -- Outdoor Keep the condenser cycle Fan fan free from all obstructions 6 screws holding 2. Turn motor/grille expose 3. Inspect outdoor to ensure assembly grille and motor upside down for cracks position fan blade, shaft will be visible). 6. 6. Ensure that setscrew shaft when tightening. (See Fig.
PAGE 24
Step 12 -- Copeland Refrigerant) Scroll Compressor The compressor used in this product is specifically operate with interchanged. Puron refrigerant EXPLOSION (R-410A) (Puron designed and to cannot be HAZARD Failure to follow this warning death or property damage. could result in personal injury, Wear safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerant and oils.
PAGE 25
Synthetic RoofPrecautionary 1. Cover extended polyethylene approximate roof CHECK DEFROST Procedure working area with an in, permeable (plastic) drip cloth or 10 X 10 fl (3 X 3 m) area. tarp. Cover cloth shop towel to absorb lubricant spills and prevent run-offs, and protect drop cloth from tears caused by tools or components. The defrost area in front 3.
PAGE 26
PURON® • (R-410A) QUICK REFERENCE GUIDE Puron refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and replacement components are designed to operate with Puron • Puron refrigerant cylinders are rose colored. • Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400. • Puron systems should be charged with liquid refrigerant.
PAGE 27
9 PIN CONNECTOR -ECM PRINTED CIRCUIT BOARD C23 __ A_.._ 1. Configuration Taps (See Installation Instructions, for detailed description) A. HEAT RANGE - Set for gas heat size (EX:090 for unit048090---)D B. AC/HP SIZE - Set for size of outdoor unit (Cooling Size) C. SYSTEM TYPE - Select "AC" for Gas Package UnitsN D. AC/HP CFM ADJUST - Select "NOM" E. ON/OFF DELAY - Do not use "ENH" for this unit \_ C::3 EASYSELECT I€ _SEC1GAS HEAT vi_ _ _o _ SEC2 I C_M _ioo _o _ F.
PAGE 28
Table 8 - Troubleshooting SYMPTOM Chart CAUSE REMEDY Power failure Call power company Replace fuse or reset circuit breaker Fuse blown or circuit breaker tripped Compressor and condenser fan will not start.
PAGE 29
START-UP (Remove I. Preliminary MODEL NO.: SERIAL NO.: CHECKLIST and Store in Job File) Information DATE: TECHNICIAN: II. PRE-START-UP () () () () () () () VERIFY III.
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Copyright 2008 Carrier Corp. • Manufacturer reserves 7310 W. Morris St. • the right to change, Indianapolis, IN 46231 at any time, specification8 and design8 Printed in U.S.A.