Bryant 345MAV User Manual

Page 32

Condensate trap MUST be used for all applications.
An external trap is not required when connecting the field drain to
this condensate trap.
The field drain connection (condensate trap or drain tube coupling)
is sized for 1/2-in. CPVC, 1/2-in. PVC, or 5/8-in. ID tube
connection.
Drain pipe and fittings must conform to ANSI standards and
ASTM D1785, D2466 or D2846. CPVC or PVC cement must
conform to ASTM D2564 or F493. Primer must conform to ASTM
F656. In Canada, use CSA or ULC listed schedule 40 CPVC or
PVC drain pipe, fittings, and cement.
When a condensate pump is required, select a pump which is
approved for condensing furnace applications. To avoid conden-
sate spillage, select a pump with an overflow switch.

CAUTION:

Unit must not be installed, operated, and

then turned off and left in an unconditioned structure
during cold weather when temperature drops to 32
degrees F and below unless drain trap and drain line have
adequate freeze protection. See Service and Maintenance
Instructions for winterizing procedures. (See Fig. 15.)
Failure to follow this caution will result in intermittent
unit operation.

Fig. 38—Short Vent (5 to 8 Ft) System

A96189

HORIZONTAL TO ROOF

HORIZONTAL TO SIDEWALL

VERTICAL TO SIDEWALL

VERTICAL TO ROOF

VENT PIPE

″

MIN

″

MIN

″

MIN

″

MIN

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.

ROOF

VENT

MAINTAIN 12-IN. MINIMUM

CLEARANCE ABOVE HIGHEST

ANTICIPATED SNOW LEVEL.

MAXIMUM OF 24 IN.

ABOVE ROOF.

A96191

Fig. 39—Roof Termination (Preferred)

MAINTAIN 12-IN.
CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL OR GRADE,
WHICHEVER IS
GREATER.

VENT

″

MINIMUM

OVERHANG OR ROOF

A96192

Fig. 40—Sidewall Termination with 2 Elbows (Preferred)

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