Condensate Drain; General; Application - Bryant H Series Installation, Start-Up, And Operating Instructions Manual

Fig. 38—Concentric Vent and Combustion-Air Side
Termination
OVERHANG OR ROOF
12" MINIMUM
VENT
90°
BRACKET
COMBUSTION-AIR
Fig. 39—Sidewall Termination of 12 in. or More
termination must be at least 36 in. away from first 2 terminations.
It is important that vent terminations be made as shown to avoid
recirculation of flue gases. Dimension "A" in Fig. 41, 42, 43, 44,
and 45 represents distance between pipes or rain shields, as
touching or 2-in. maximum separation.
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CAUTION: Unit must not be installed, operated, and
then turned off and left in an unoccupied structure during
cold weather when temperature drops to 32°F and below
unless drain trap and drain line have adequate freeze
protection. See Service and Maintenance Instructions for
winterizing procedure. Failure to follow this caution will
result in intermittent unit operation(See Fig. 15.)
OVERHANG OR ROOF
12" MINIMUM
1" MAXIMUM
COMBUSTION-AIR
VENT
MAINTAIN 12 IN.
CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL OR GRADE,
WHICHEVER IS
GREATER.
12 IN. SEPARATION
BETWEEN BOTTOM OF
COMBUSTION AIR AND
BOTTOM OF VENT
MAINTAIN 12 IN.
CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL OR GRADE,
WHICHEVER IS
GREATER.
BRACKET
COUPLING
A93055
Fig. 40—Sidewall Termination of Less than 12 in.
X. CONDENSATE DRAIN
A. General
Condensate trap is shipped installed in the blower shelf and factory
connected for UPFLOW application. Condensate trap must be
RELOCATED for use in DOWNFLOW and HORIZONTAL
applications.
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 l/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.
A87225
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.
Furnace condensate is mildly acidic, typically in the pH range of
3.2 to 4.5. Due to corrosive nature of this condensate, a condensate
pH neutralizing filter may be desired. Check with local authorities
to determine if a pH neutralizer is required.
B. Application
The furnace, A/C, and humidifier drains may be combined and
drained together. The A/C drain must have an external, field-
supplied trap prior to the furnace drain connection. All drain
connections (furnace, A/C, or humidifier) must be terminated into
an open or vented drain as close to the respective equipment as
possible to prevent siphoning of the equipment's drain.
See Fig. 46 for 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.
—32—
OVERHANG OR ROOF
12" MINIMUM
VENT
90°
12 IN. SEPARATION
BETWEEN BOTTOM OF
COMBUSTION AIR AND
BOTTOM OF VENT
MAINTAIN 12 IN.
CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
COMBUSTION-AIR LEVEL OR GRADE,
(ELBOW PARALLEL WHICHEVER IS
TO WALL) GREATER.
A87226