Condensate Drain Protection; Start-Up, Adjustments And Safety Check; General - Bryant 355MAV Installation, Start-Up, And Operating Instructions Manual

WARNING: PERSONAL INJURY AND
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in property
damage and personal injury or death.
Caution should be taken to prevent draining where
slippery conditions may cause personal injuries. Exces-
sive condensate draining may cause saturated soil condi-
tions which could result in damage to plants.
CAUTION: UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent
unit operation.
Unit must not be installed, operated, and then turned and
left off in an unoccupied structure during cold weather
when temperature drops to 32°F or below unless drain
trap and drain line have adequate freeze protection. See
Service and Maintenance Instructions for winterizing
procedure. (See Fig. 47.)
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 recommenda-
tions.
1. Fold heat tape in half and wrap on itself 3 times.
2. Locate heat tape between sides of condensate trap back.
(See Fig. 49.)
3. Use wire ties to secure heat tape in place. Wire ties can be
positioned in notches of condensate trap sides. (See Fig.
49.)
4. Wrap field drain pipe with remaining heat tape, approxi-
mately 1 wrap per ft.
5. When using field-supplied heat tape, follow heat tape
manufacturer's instructions for all other installation guide-
lines.

START-UP, ADJUSTMENTS AND SAFETY CHECK

I. GENERAL
1. Furnace must have a 115-v power supply properly con-
nected and grounded.
32°F MINIMUM INSTALLED
AMBIENT OR FREEZE
PROTECTION REQUIRED
Fig. 47—Freeze Protection
OPEN STAND
HUMIDIFIER
TEE
Fig. 48—Example of Field Drain Attachment
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control status indicator light flashes rapidly
and furnace does not operate.
2. Thermostat wire connections at terminals R, W/W1, G, and
Y/Y2 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.
CONDENSATE TRAP
(3 WRAPS MINIMUM)
A93058
—35—
PIPE FOR
A/C OR
DRAIN
TO OPEN
DRAIN
WIRE TIE(S)
HEAT TAPE
Fig. 49—Condensate Trap Heat Tape
A94054
A93036