TABLE 14 - THERMOSTAT SIGNALS (THREE PHASE UNITS)
SIGNAL | STATE | BOARD FUNCTION | SIGNAL | STATE | |
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“G” | ON | FAN INSTANT ON |
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OFF | FAN INSTANT OFF |
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| ON | FAN INSTANT ON |
| ON | |
“G” | COMPRESSOR AND OUTDOOR FAN INSTANT ON |
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| “W1" |
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“Y” | OFF | COMPRESSOR AND OUTDOOR FAN INSTANT OFF | OFF | ||
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| FAN 60 SECOND DELAY OFF |
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| ON | FAN INSTANT ON |
| ON | |
“G” | HEATER BANK 1, 2 AND 3 ELEC. HEAT INSTANT ON |
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| ”W2" |
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“W1" | OFF | HEATER BANK 1, 2 AND 3 ELEC. HEAT INSTANT OFF | OFF | ||
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| FAN 5 SECOND DELAY OFF |
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“G” | ON | FAN INSTANT ON |
| ON | |
HEATER BANK 1, 2 AND 3 ELEC. HEAT INSTANT ON | “W1" | ||||
“W1" |
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| HEATER1BANK 1, 2 AND 3 ELEC. HEAT INSTANT OFF | ”W2" |
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”W2" | OFF | OFF | |||
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| FAN 6 2SECOND DELAY OFF |
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BOARD FUNCTION
FAN INSTANT ON
HEATER BANK 1, 2 AND 3 ELEC. HEAT INSTANT ON
HEATER1BANK 1, 2 AND 3 ELEC. HEAT INSTANT OFF FAN 5 SECOND DELAY OFF
FAN INSTANT ON
HEATER BANK 1, 2 AND 3 ELEC. HEAT INSTANT ON
HEATER BANK 1, 2 AND 3 ELEC. HEAT INSTANT OFF FAN 5 SECOND DELAY OFF
FAN INSTANT ON
HEATER BANK 1, 2 AND 3 ELEC. HEAT INSTANT ON
HEATER BANK 1, 2 AND 3 ELEC. HEAT INSTANT OFF FAN 6
2SECOND DELAY OFF
SECURE OWNER'S APPROVAL: When the system is functioning properly, secure the owner's approval. Show him the location of all disconnect switches and the thermostat. Teach him how to start and stop the unit and how to adjust temperature settings within the limitations of the system.
MAINTENANCE
NORMAL MAINTENANCE
WARNING: Prior to any of the following maintenance proce- dures, shut off all power to the unit, to avoid per- sonal injury.
Periodic maintenance consists of changing or cleaning filters and general cleaning of the outdoor coil.
FILTERS - Inspect once a month. Replace Disposable or clean Permanent Type as necessary. DO NOT replace Permanent Type with Disposable.
MOTORS - Indoor and outdoor fan motors are permanently lu- bricated and require no maintenance.
OUTDOOR COIL - Dirt should not be allowed to accumulate on the outdoor coil surface or other parts in the air circuit. Cleaning should be as often as necessary to keep the coil clean. Use a brush, vacuum cleaner attachment, or other suitable means. If water is used to clean the coil, be sure that the power to the unit is shut off prior to cleaning.
CAUTION: Exercise care when cleaning the coil so that the coil fins are not damaged.
Do not permit the hot condenser air discharge to be obstructed by overhanging structures or shrubs.
12 | Unitary Products Group |
