Condensate Drain Protection; Start-Up, Adjustments And Safety Check; General; Prime Condensate Trap With Water - Payne PG9MAB Series A Installation Manual

OPEN STAND
PIPE FOR
A/C OR
HUMIDIFIER
DRAIN
TEE
TO OPEN
DRAIN
Fig. 43—Example of Field Drain Attachment
See Fig. 43 for example of possible field drain attachment using 1/2-in. CPVC or PVC tee for vent and A/C or humidifier drain connection.
Outdoor draining of the furnace is permissible if allowed by local codes. Caution should be taken when freezing ambient may freeze drain pipe
and prohibit draining.
WARNING: PERSONAL INJURY HAZARD
Caution should be taken to prevent draining where slippery conditions could cause personal injuries.
Excessive condensate draining may cause saturated soil conditions which could result in damage to plants.
C. Condensate Drain Protection
Freezing condensate left in condensate trap and drain line may cause cracks, and possible water damage may occur. If freeze protection is required,
use condensate freeze protection accessory or equivalent 3 to 6 watt per ft at 120v and 40°F self-regulating, shielded, and waterproof heat tape.
See Installation Instructions supplied with accessory or heat tape manufacturer's recommendations.
1. Fold heat tape in half and wrap on itself 3 times.
2. Locate heat tape between sides of condensate trap back. (See Fig. 44.)
3. Use wire ties to secure heat tape in place. Wire ties can be positioned in notches of condensate trap sides. (See Fig. 44.)
4. Wrap field drain pipe with remaining heat tape, approximately 1 wrap per ft.
5. When using field-supplied heat tape, follow heat tape manufacturer's instructions for all other installation guidelines.
PROCEDURE 1—GENERAL
1. Furnace must have a 115-v power supply properly connected and grounded. Proper polarity must be maintained for correct operation.
NOTE: Proper polarity must be maintained for 115-v wiring. If polarity is incorrect, control center LED status light will flash rapidly and furnace
will not operate.
2. Thermostat wire connections at terminals R, W, G, and Y must be made at 24-v terminal block on furnace control.
3. Natural gas service pressure must not exceed 0.5 psig (14-in. wc), but must be no less than 0.16 psig (4.5-in. wc).
4. Blower access panel must be in place to complete 115-v electrical circuit to furnace.
CAUTION: UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent unit operation.
These furnaces are equipped with a manual reset limit switch in burner box. This switch will open and shut off power to gas control
valve if an overheat condition (flame rollout) occurs in burner enclosure. Correct inadequate combustion-air supply or improper venting
condition and reset switch. DO NOT jumper this switch.
Before operating furnace, check flame rollout manual reset switch for continuity. If necessary, press button to reset switch.
PROCEDURE 2—PRIME CONDENSATE TRAP WITH WATER
CAUTION: UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent unit operation.
Condensate trap must be PRIMED or proper draining may not occur. The condensate trap has 2 internal chambers which can ONLY
be primed by pouring water into the inducer drain side of condensate trap.
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START-UP, ADJUSTMENTS AND SAFETY CHECK

—48—
CONDENSATE TRAP
WIRE TIE(S)
HEAT TAPE
(3 WRAPS MINIMUM)
Fig. 44—Condensate Trap Heat Tape
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