Instruction manual

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50JZ ---A

Single P ackaged Heat Pump System

with Puron (R---410A) Refrigerant

50 Hz, CE Nominal 7---14 kW (Sizes 24---48)

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--9..................

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

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

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

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

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

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

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

Rig and Place Unit 6.................................

Inspection 6......................................

Rigging/Lifting of Unit 6............................

Select and Install Ductwork 6...........................

Converting Horizontal Discharge Units to Downflow

(Vertical) Dischar ge Units 7..........................

Provide for Condensate Disposal 8......................

Install Electrical Connections 10........................

High-- Voltage Connections 10........................

Control Voltage Connections 10.......................

Standard Connections 10............................

Transformer Protection 10...........................

Accessory Electric Heaters Installation 11...............

Sequence of Operation 11...........................

PRE--START --UP 13...................................

START--UP 13--16.....................................

Checking Cooling & Heating Control Operation 13........

Check for Refrigerant Leaks 13.........................

Start--Up Adjustments 14.............................

Checking & Adjusting Refrigerant Charge 14............

Indoor Airflow & Airflow Adjustments 15..............

Defrost Control 17...................................

Quiet Shift 17.....................................

Defrost 17.......................................

MAINTENANCE 17-- 2 0................................

Air Filter 18........................................

Indoor Blower and Motor 18...........................

Outdoor Coil, Indoor Coil, & Condensate Drain Pan 19......

Outdoor Fan 19.....................................

Electrical Controls and Wiring 19.......................

Refrigerant Circuit 19.................................

Indoor Airflow 19...................................

Metering Devices-- Piston 19...........................

Pressure Switches 19.................................

Loss of Charge Switch 19.............................

High Pressure Switch 20..............................

Copeland Scroll compressor (Puron Refrigerant) 20.........

A09042

Fig. 1 -- Unit 50JZ--A

Refrigerant System 20................................

Refrigerant 20....................................

Compressor Oil 20.................................

Servicing Systems on Roofs with Synthetic Materials 20....

Liquid Line Filter Drier 20...........................

PuronR (R--410A) Refrigerant Charging 20.............

System Information 20................................

Loss of Charge Switch 20............................

Check Defrost Thermostat 20.........................

TROUBLESHOOTING 21..............................

START-- UP CHECKLIST 21............................

SAFETY CONSIDERATIONS

Installation and servicing of this equipment can be hazardous due

to mechanical and electrical components. Only trained and

qualified personnel should install, repair, or service this equipment.

Untrained personnel can perform basic maintenance functions such

as cleaning and replacing air filters. All other operations must be

performed by trained service personnel. When working on this

equipment, observe precautions in the literature, on tags, and on

labels attached to or shipped with the unit and other safety

precautions that may apply.

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

literature and attached to the unit. Consult local building codes, the

current ed itions of the National Electrical Code (NEC) NFPA 70.

In Canada refer to the current editions of the Canadian Electrical

Code CSA C22.1.

Recognize safety information. This is the safety--alert symbol

When you see this symbol on the unit and in instructions or manu-

als, be alert to the potential for personal injury. Understand these

Summary of content (24 pages)

PAGE 1
50JZ---A Single Packaged Heat Pump System with Puron (R---410A) Refrigerant 50 Hz, CE Nominal 7---14 kW (Sizes 24---48) 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 2
signal words: DANGER, WARNING, and CAUTION. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.
PAGE 3
50JZ-- A should be at least 4 in. (102 mm) above the highest expected water and runoff levels. Do not use unit if it has been under water. A09502 Fig.
PAGE 4
50JZ-- A A09503 Fig.
PAGE 5
Dashed lines show cross support location for large basepan units.
PAGE 6
CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR ACCESS PANELS MUST BE IN PLACE WHEN RIGGING. PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION. Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition DUCTS 50JZ-- A MINIMUM HEIGHT: 36" (914.
PAGE 7
WARNING PERSONAL INJURY HAZARD Failure to follow this warning could result in personal injury or death. For vertical supply and return units, tools or parts could drop into ductwork Install a 90 degree turn in the return ductwork between the unit and the conditioned space. If a 90 degree elbow cannot be installed, then a grille of sufficient strength and density should be installed to prevent objects from falling into the conditioned space.
PAGE 8
7. Flash, weatherproof, and vibration--isolate all openings in building structure in accordance with local codes and good building practices. 50JZ-- A Step 6 — Provide for Condensate Disposal TRAP OUTLET 1-in. (25 mm) min. NOTE: Ensure that condensate--water disposal methods comply with local codes, restrictions, and practices. The 50JZ--A units dispose of condensate through a 3/4 in. NPT female fitting that exits on the compressor end of the unit.
PAGE 9
Table 1 – Physical Data -- Unit 50JZ--A 50JZ--- A24 2 7 314 142.4 6.9 3.2 0.059 1.55 0.032 (2) .81 50JZ--- A30 2.5 8.8 335 152.0 50JZ--- A36 3 10.6 343 155.6 1 SCROLL COMPRESSOR R---410A Accurater 9.6 10.0 4.0 4.2 0.061 0.067 1.55 1.70 0.040 (2) 0.040 (2) 1.02 1.02 50JZ--- A48 4 14.1 373 169.2 12.0 4.8 0.078 1.93 0.046 (2) 1.17 2...17 2...6.7 8.5 .79 2...17 2...6.7 10.3 .96 2...17 2...6.7 10.3 .96 2...17 2...6.7 13.5 1.25 2200 1038 22 559 1/4 (900) 187 .187...15 2200 1038 22 559 1/4 (900) 187 .
PAGE 10
Step 7 — Install Electrical Connections ! HIGH VOLTAGE POWER LEADS (SEE UNIT WIRING LABEL) CAUTION POWER SUPPLY 50JZ-- A UNIT COMPONENT DAMAGE HAZARD Failure to follow this caution may result in damage to the unit being installed. 1. Make all electrical connections in accordance with NEC NFPA 70 (latest edition) and local electrical codes governing such wiring. In Canada, all electrical connections must be in accordance with CSA standard C22.
PAGE 11
d. HEAT PUMP HEATING MODE (1.) Thermostat closes circuits R to G and R to Y1. The compressor, indoor and outdoor fans are energized. e. HEAT PUMP HEATING WITH AUXILIARY ELECTRIC HEAT (1.) Thermostat closes circuits R to G, R to Y1 and R to W/W1 or W2. The compressor, indoor and outdoor fans are energized, as well as the electric heat relays. f. DEFROST MODE The defrost mode is automatically energized by the defrost board during heating mode.
PAGE 12
50JZ-- A A09504 Fig.
PAGE 13
A00010 LED OFF FLASHING ON STATUS No call for compressor operation Reversed phase Normal Fig. 13 -- Phase Monitor Control and LED Indicators PRE--START--UP ! WARNING FIRE, EXPLOSION, ELECTRICAL ENVIRONMENTAL SHOCK HAZARD START--UP AND Failure to follow this warning could result in personal injury, death or property damage. 1. Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system. 2.
PAGE 14
5. Charge unit with Puron (R--410A) refrigerant, using an electronic scale. Refer to unit rating plate for required charge. Step 2 — Start--Up Adjustments Checking and Adjusting Refrigerant Charge The refrigerant system is fully charged with Puron (R--410A) refrigerant and is tested and factory sealed. NOTE: Adjustment of the refrigerant charge is not required unless the unit is suspected of not having the proper Puron (R--410A) charge.
PAGE 15
NOTE: Be sure that all supply--and return--air grilles are open, free from obstructions, and adjusted properly. ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Disconnect electrical power to the unit and install lockout tag before changing blower speed.
PAGE 16
Table 4 – Wet Coil Air Delivery UNIT 50JZ--- A24 50JZ--- A30 50JZ--- A36 50JZ-- A 50JZ--- A48 UNIT 50JZ--- A24 50JZ--- A30 50JZ--- A36 50JZ--- A48 MOTOR SPEED Watts Low Cfm Watts High Cfm Watts Low Cfm Watts High Cfm Watts Low Cfm Watts High Cfm Watts Low Cfm Watts High Cfm 0.0 303 969 ------------552 1296 ----692 1571 ----- 0.1 305 879 ----1002 1189 ----540 1237 ----686 1509 ----- 0.
PAGE 17
OF1 DFT OF2 T2 C C O T1 O R W2 Y C P1 50JZ-- A Y 30 30 60 120 60 P3 ON DFT QUIET SHIFT 90 INTERVAL TIMER OFF J1 SPEEDUP Speedup Pins Quiet Shift Defrost interval DIP switches A08020 Fig. 17 -- Defrost Control Step 3 — Defrost Control Quiet Shift Quiet Shift is a field--selectable defrost mode, which will eliminate occasional noise that could be heard at the start of defrost cycle and restarting of heating cycle. It is selected by placing DIP switch 3 (on defrost board) in ON position.
PAGE 18
! WARNING WARNING PERSONAL INJURY AND UNIT DAMAGE HAZARD ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death and unit component damage. Failure to follow this warning could result in personal injury or death. The ability to properly perform maintenance on this equipment requires certain expertise, mechanical skills, tools and equipment.
PAGE 19
Inspect the condenser coil, evaporator coil, and condensate drain pan at least once each year. The coils are easily cleaned when dry; therefore, inspect and clean the coils either before or after each cooling season. Remove all obstructions, including weeds and shrubs, that interfere with the airflow through the condenser coil. Straighten bent fins with a fin comb. If coated with dirt or lint, clean the coils with a vacuum cleaner, using the soft brush attachment. Be careful not to bend the fins.
PAGE 20
Step 10 — High--Pressure Switch Servicing Systems on Roofs with Synthetic Materials The high--pressure switch is located in the discharge line and protects against excessive condenser coil pressure. It opens at 650 psig (4482 kPa). POE (polyolester) compressor lubricants are known to cause long term damage to some synthetic roofing materials. Exposure, even if immediately cleaned up, may cause embrittlement (leading to cracking) to occur in one year or more.
PAGE 21
TROUBLESHOOTING FEEDER TUBE STUB TUBE Refer to the Cooling and Heating Troubleshooting Chart (Table 7) for troubleshooting information. START--UP CHECKLIST Use the Start--Up Checklist. DEFROST THERMOSTAT C99029 50JZ-- A Fig. 20 -- Defrost Thermostat PURONR (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 S Puron refrigerant cylinders are rose colored.
PAGE 22
Table 7 – Troubleshooting Chart SYMPTOM Compressor and condenser fan will not start.
PAGE 23
START--UP CHECKLIST (Remove and Store in Job Files) II.
PAGE 24
50JZ-- A Copyright 2010 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 08/10 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.