Condensate Trap Freeze Protection; Construct A Working Platform; Location; General - Bryant 355MAV Installation, Start-Up, And Operating Instructions Manual

6. Determine appropriate length, cut, and connect tube.
7. Clamp tube to relief port connection.
E. Condensate Trap Freeze Protection
Refer to Condensate Drain Protection section for recommendations and procedures
F. Construct a Working Platform
Construct working platform where all required furnace clearances are met. (See Fig. 3 and 10.)
CAUTION: The condensate trap MUST be installed below furnace. See Fig. 4 for dimensions. The drain connection to
condensate trap must also be properly sloped to an open drain.
NOTE: Combustion-air and vent pipes are restricted to a minimum length of 5 ft. (See Table 6.)
NOTE: A 12-in. minimum offset pipe section is recommended with short (5 to 8 ft) vent systems. This recommendation is to reduce excessive
condensate droplets from exiting the vent pipe. (See Fig. 10 or 29.)
PROCEDURE 1—GENERAL
When a furnace is installed so that supply ducts carry air to areas outside the space containing the furnace, return air must also be handled by ducts
sealed to furnace casing. The ducts terminate outside the space containing the furnace to ensure there will not be a negative pressure condition
within equipment room or space. Furnace may be located in a confined space without special provisions for dilution or ventilation air. This furnace
must be installed so electrical components are protected from water.
NOTE: For proper furnace operation, install furnace so that it is level or pitched forward within 1/2-in. to ensure proper condensate drainage from
secondary heat exchangers. (See Fig. 12.)
NOTE: These furnaces are designed for a minimum continuous return-air temperature of 60°F or intermittent operation down to 55°F such as
when used with a night setback thermostat. Return-air temperature must not exceed a maximum of 85°F. Failure to follow these return-air
temperature limits may affect reliability of heat exchangers, motors, and controls. (See Fig. 13.)
Locate furnace as close to center of air distribution system as possible.
Locate furnace so combustion-air pipe lengths are not exceeded. Refer to Table 6.

LOCATION

LEVEL (0")
FRONT
TO
1 ⁄ " MAX
2
UPFLOW OR DOWNFLOW
Fig. 12—Furnace Location for Proper Condensate
Drainage
Fig. 13—Return-Air Temperature
—15—
FRONT
LEVEL (0")
TO
1 ⁄ " MAX
2
HORIZONTAL
A93025
A93042