Heating Mode Charge; Maintenance; Air Filter - Payne PA3Z Installation Manual

OD Temp. (°F) 52
45 51
55 —
65 —
75 —
85 —
95 —
105 —
115 —
125 —
OD Temp. (°C) 361
7 11
13 —
18 —
24 —
29 —
35 —
41 —
46 —
52 —
H. ELECTRIC RESISTANCE HEATING
If accessory electric heaters are installed, on a call for "Emergency Heat" the thermostat energizes W which energises the heater relay and in turn
energizes the electric heaters. The IFR is energized which starts the indoor-fan motor. If the heaters are staged, W2 is energized when the second
stage of heating is required. When the need for heating is satisfied, the heater and IFM are deenergized.
To ensure continuing high performance, and to reduce the possibility of premature equipment failure, periodic maintenance must be performed
on this equipment. This cooling unit should be inspected at least once each year by a qualified service person. To troubleshoot cooling of units,
refer to Troubleshooting chart in back of book.
NOTE TO EQUIPMENT OWNER: Consult your local dealer about the availability of a maintenance contract.
WARNING: FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death or property damage.
The ability to properly perform maintenance on this equipment requires certain expertise, mechanical skills, tools and
equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment, other than those
procedures recommended in the User's Manual.
The minimum maintenance requirements for this equipment are as follows:
1. Inspect air filter(s) each month. Clean or replace when necessary.
2. Inspect indoor coil, outdoor coil, drain pan, and condensate drain each cooling and heating season for cleanliness. Clean when necessary.
3. Inspect blower motor and wheel for cleanliness each cooling and heating season. Clean when necessary. For first heating season, inspect
blower wheel bimonthly to determine proper cleaning frequency.
4. Check electrical connections for tightness and controls for proper operation each cooling season. Service when necessary.
5. Check the drain channel in the top cover periodically for blockage (leaves, insects). Clean as needed.
WARNING: FIRE, EXPLOSION, ELECTRICAL SHOCK, CUT HAZARD
Failure to follow these warnings could result in serious personal injury, death, and/or property damage:
1. Turn off electrical power to the unit and install lockout tag before performing any maintenance or service on the unit.
2. Use extreme caution when removing panels and parts. As with any mechanical equipment, personal injury can result from
sharp edges, etc.
3. Never place anything combustible either on, or in contact with, the unit.
PROCEDURE 1—AIR FILTER
NOTE: Never operate the unit without a suitable air filter in the return-air duct system. Always replace the filter with the same size as originally
installed. See Table 2 for recommended filter sizes.
Inspect air filter(s) at least once each month and replace (throwaway-type) or clean (cleanable-type) at least twice during each cooling season or
whenever the filters become clogged with dust and lint.
Table 8—Cooling Charging Chart
SUCTION LINE TEMPERATURE (°F)
Suction Line Pressure (PSIG)
54 56 59 61
55 60 64 69
— 53 57 62
— — — 53
— — — —
— — — —
— — — —
— — — —
— — — —
— — — —
SUCTION LINE TEMPERATURE (°C)
Suction Line Pressure (kPa)
370 387 405 423
13 15 18 21
— 12 14 16
— — — 12
— — — —
— — — —
— — — —
— — — —
— — — —
— — — —

MAINTENANCE

64 67 70 73
— — — —
66 70 — —
57 62 66 71
— — 56 61
— — — 53
— — — —
— — — —
— — — —
— — — —
442 462 482 502
— — — —
19 21 — —
14 17 19 21
— — 13 16
— — — 12
— — — —
— — — —
— — — —
— — — —
—17—
76 79 82 85
— — — —
— — — —
75 — — —
66 71 76 —
58 63 67 72
50 54 58 62
— 50 53 57
— 49 52 55
— — 50 53
523 544 566 589
— — — —
— — — —
24 — — —
19 22 24 —
14 17 20 22
10 12 14 17
— 10 12 14
— 9 11 13
— — 10 11
89 92
— —
— —
— —
— —
— —
66 —
60 64
58 61
56 59
612 636
— —
— —
— —
— —
— —
19 —
16 18
14 16
13 15