Payne PA1Z Installation, Start-Up And Service Instructions Manual
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Payne PA1Z Installation, Start-Up And Service Instructions Manual

Payne PA1Z Installation, Start-Up And Service Instructions Manual

Packaged air conditioners
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1-4
I. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
RECEIVING AND INSTALLATION . . . . . . . . . . . . . . . . . . 5-10
I. Step 1 - Check Equipment . . . . . . . . . . . . . . . . . . 5
II. Step 2 - Provide Unit Support . . . . . . . . . . . . . . . 5
III. Step 3 - Provide Clearances . . . . . . . . . . . . . . . . 5
IV. Step 4 - Place Unit . . . . . . . . . . . . . . . . . . . . . . . . 5
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
I. Check for Refrigerant Leaks . . . . . . . . . . . . . . . . . 11
Make Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . 11
III. Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . 11
V. Unit Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
VI. Sequence of Operation . . . . . . . . . . . . . . . . . . . . . 14
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-17
I. Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Coil Side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
III. Evaporator Blower and Motor . . . . . . . . . . . . . . . . 16
and Condensate Drain Pan . . . . . . . . . . . . . . . . . . 16
V. Condenser Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
VI. Electrical Controls and Wiring . . . . . . . . . . . . . . . 17
VII. Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . 17
IX. Metering Devices . . . . . . . . . . . . . . . . . . . . . . . . . . 17
X. Liquid Line Strainer . . . . . . . . . . . . . . . . . . . . . . . . 17
TROUBLESHOOTING COOLING CHART . . . . . . . . . . . . 18
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1
NOTE TO INSTALLER - Before the installation, READ
THESE INSTRUCTIONS CAREFULLY AND COMPLETELY.
Also, make sure the Owner's Manual and Service Instruc-
tions are left with the unit after installation.
installation, start-up and
service instructions
PACKAGED AIR
CONDITIONERS
Page
Cancels: New
Fig. 1 - Unit PA1Z (Size 036 Shown)

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified workers should install,
repair, or service air-conditioning equipment.
Untrained workers can perform basic maintenance func-
tions of cleaning coils and filters. All other operations should
be performed by trained service people. When working on air-
conditioning equipment, pay attention to precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
WARNING: Before performing service or mainte-
nance operations on system, turn off main power to unit.
Turn off accessory heater power switch if applicable. Elec-
trical shock can cause personal injury.
I. GENERAL
The PA1Z cooling unit is fully self-contained and designed
for outdoor installation. See Fig. 1. As shown in Fig. 2-4, units
are shipped in a horizontal-discharge configuration for instal-
lation on a ground-level slab. All units can be field-converted
to downflow discharge configurations for rooftop applications
with a field-supplied plenum.
PA1Z
Sizes 024-060
II PA1Z-24-1
11/15/97

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  • Page 1: Table Of Contents

    START-UP CHECKLIST ......CL-1 I. GENERAL NOTE TO INSTALLER — Before the installation, READ The PA1Z cooling unit is fully self-contained and designed THESE INSTRUCTIONS CAREFULLY AND COMPLETELY. for outdoor installation. See Fig. 1. As shown in Fig. 2-4, units Also, make sure the Owner’s Manual and Service Instruc-...
  • Page 2 (914 mm [36 in.]). A removable fence or barricade requires no clearance. 2. Dimensions are in millimeters. Dimensions in ( ) are in inches. UNIT WT CENTER OF GRAVITY — mm (in.) UNIT ELECTRICAL PA1Z CHARACTERISTICS 208/230-1-60 355.6 (14.00) 508.0 (20.00) 241.3 (9.50) 208/230-1-60 355.6 (14.00)
  • Page 3 (914 mm [36 in.]). A removable fence or barricade requires no clearance. 2. Dimensions are in millimeters. Dimensions in ( ) are in inches. UNIT WT CENTER OF GRAVITY — mm (in.) UNIT ELECTRICAL PA1Z CHARACTERISTICS 208/230-1-60, 208/230-3-60 355.6 (14.00) 508.0 (20.00) 304.8 (12.00) 208/230-1-60, 208/230-3-60 355.6 (14.00)
  • Page 4 2. Dimensions are in millimeters. Dimensions in ( ) are in inches. UNIT WT CENTER OF GRAVITY — mm (in.) UNIT ELECTRICAL PA1Z CHARACTERISTICS 230-1-60, 208/230-3-60, 460-3-60 355.6 (14.00) 508.0 (20.00) 355.6 (14.00) Fig. 4 — Base Unit Dimensions, PA1Z060...

  • Page 5: Receiving And Installation

    The unit should be level to within ⁄ inch. This is necessary for the unit drain to function properly. Table 1 — Physical Data UNIT PA1Z OPERATING WEIGHT (lbs) COMPRESSOR TYPE Reciprocating REFRIGERANT R-22 Charge (lbs) REFRIGERANT METERING DEVICE Acutrol™...

  • Page 6: Step 5 - Select And Install Ductwork

    V. STEP 5 — SELECT AND INSTALL DUCTWORK When designing and installing ductwork, consider the following: The design and installation of the duct system must be in accordance with: CAUTION: When connecting ductwork to units, do • the standards of the NFPA (National Fire Protection not drill deeper than ⁄...

  • Page 7: Step 6 - Provide For Condensate Disposal

    If the installation requires draining the condensate water away Figure 8 shows a typical duct system with PA1Z unit from the unit, install a 2-in. trap using a ⁄...
  • Page 8 Route thermostat wires through grommet providing a drip CAUTION: Failure to follow these precautions could loop at the panel. Connect low-voltage leads to the thermo- result in damage to the unit being installed: stat as shown in Fig. 13. 1. Make all electrical connections in accordance with The unit transformer supplies 24-v power for complete sys- NEC ANSI/NFPA (latest edition) and local elec- tem including accessory electrical heater.
  • Page 9 Table 3 — Electrical Data VOLTAGE DISCONNECT NOMINAL COMPRESSOR ELECTRIC HEAT POWER SUPPLY UNIT RANGE SIZE VOLTAGE PA1Z (V-Ph-Hz) Nominal kW* MOCP —/— —/— 16.9/ 16.9 20/ 20 16/ 16 208/230-1-60 10.9 61.0 3.8/ 5.0 18.1/20.8 25.6/ 29.0 30/ 30 24/ 27 7.5/10.0...
  • Page 10 LEGEND NEC — National Electrical Code Field Wiring Splice Connections NOTE: Use copper wire only. Fig. 12 — Line Power Connections ELECTRIC GROUND INDOOR OUTDOOR FAN MOTOR HIGH HEATER AND COMPRESSOR VOLTAGE FUSES RELAY START CAPACITOR LEADS Fig. 11 — Control Box Wiring Fig.

  • Page 11: Pre-Start-Up

    PRE-START-UP START-UP Use the Start-Up Checklist supplied at the end of this book, WARNING: Failure to observe the following warn- and proceed as follows: ings could result in serious personal injury: I. CHECK FOR REFRIGERANT LEAKS 1. Follow recognized safety practices and wear protec- tive goggles when checking or servicing refrigerant Locate and repair refrigerant leaks and charge the unit as system.
  • Page 12 B. Low Charge Cooling Use Cooling Charging Charts, Fig. 15-20. Vary refrigerant until the conditions of the appropriate chart are met. Note that charging charts are different from the type normally used. Charts are based on charging the units to the correct super- heat for the various operating conditions.
  • Page 13 Fig. 18 — Cooling Charging Chart — PA1Z042 Fig. 19 — Cooling Charging Chart — PA1Z048 Fig. 20 — Cooling Charging Chart — PA1Z060 —13—...

  • Page 14: Indoor Airflow And Airflow Adjustments

    IV. INDOOR AIRFLOW AND AIRFLOW ADJUSTMENTS VI. SEQUENCE OF OPERATION A. Fan Operation CAUTION: For cooling operation, the recommended The FAN switch on the thermostat controls indoor fan opera- airflow is 350 to 450 cfm per each 12,000 Btuh of rated tion.
  • Page 15 Table 4 — Dry Coil Air Delivery* — Horizontal Discharge (Deduct 10% for 208 Volt Operation) 230 AND 460 VOLT HORIZONTAL DISCHARGE UNIT MOTOR External Static Pressure (in. wg) PA1Z SPEED DELIVERY Watts — — — — Watts — —...

  • Page 16: Air Filter

    Table 7 — Accessory Electric Heat Pressure Drop Only qualified service personnel should perform mainte- (in. wg) nance and service procedures that require unit top removal. Refer to the following top removal procedures: HEATER 1. Remove 7 screws on unit top cover surface. (Save all 1000 1200 1400...

  • Page 17: Condenser Fan

    splash water on motors, insulation, wiring, or air filter(s). For Remove the top panel to locate all the electrical controls and best results, spray condenser-coil fins from inside to outside wiring. Check all electrical connections for tightness. Tighten the unit. On units with an outer and inner condenser coil, be sure to clean between the coils.

  • Page 18: Troubleshooting Cooling Chart

    TROUBLESHOOTING COOLING CHART SYMPTOM CAUSE REMEDY Compressor and con- Power failure Call power company. denser fan will not Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker. start. Defective thermostat, contactor, transformer, Replace component. or control relay Insufficient line voltage Determine cause and correct.

  • Page 20: Start-Up Checklist

    START-UP CHECKLIST (Remove and Store in Job File) I. PRELIMINARY INFORMATION MODEL NO.: SERIAL NO.: DATE: TECHNICIAN: II. PRE-START-UP (insert checkmark in box as each item is completed) VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW...

This manual is also suitable for:

Pa1z024Pa1z030Pa1z036Pa1z042Pa1z048Pa1z060

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