Bryant 352AAV Installation, Start-Up, And Operating Instructions Manual page 33

SETUP SWITCHES
LOW-HEAT ONLY AND
BLOWER OFF-DELAY
24-V-THERMOSTAT
TERMINALS
HUMIDIFIER TERMINAL
(24-VAC 0.5 AMP MAX.)
3-AMP FUSE
LED OPERATION &
DIAGNOSTIC LIGHT
115-VAC (L2) NEUTRAL
CONNECTIONS
HI HEAT
LO HEAT
BLOWER SPEED
SELECTION TERMINALS
CAUTION
!
UNIT CORROSION HAZARD
Excessive exposure to contaminated combustion air may result
in safety and performance related problems.
Combustion air must not be taken from inside structure
because inside air is frequently contaminated by halogens,
which include fluorides, chlorides, bromides, and iodides.
These elements are found in aerosols, detergents, bleaches,
cleaning solvents, salts, air fresheners, adhesives, paint, and
other household products. Locate combustion-air inlet as far as
possible from swimming pool and swimming pool pump
house.
NOTE: All pipe joints must have cemented attachment of
combustion-air inlet pipe to inlet housing connection, since it
may be necessary to remove pipe for servicing.
Assembly of Combustion Air Pipe (Non-Direct Vent/1-Pipe
System ONLY)
1. Permanently install
(factory-supplied in loose parts bag) in combustion-air
elbow using RTV or by cementing, as shown in Fig. 39.
For 120,000 Btuh size units only: separate the 2 halves of
perforated disk assembly and use only the shouldered
disk half.
2. Determine the length of straight portion of combustion-air
inlet pipe from Fig. 39.
3. Cut field-supplied 2-in. (51 mm) diameter PVC pipe to
length as determined per Fig. 39.
TWINNING AND/OR
COMPONENT TEST
TERMINAL
LHT
OFF
DLY
TEST/TWIN
HUM
0.5-AMP024 VAC
FUSE 3-AMP
SEC-1 SEC-2
EAC-2 NEUTRAL-L2
BLW
BHI/LOR BHT/CLR
COOL 1-AMP@115 VAC
SPARE-1 SPARE-2 EAC-1
SPARE-1
COOL
SPARE-2
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
Fig. 37 - - Control Center
perforated disk assembly
ACRDJ - AIR CONDITIONING
RELAY DISABLE JUMPER
BLWR
PR-1
HSI HI LO
115-VAC (L1) LINE
VOLTAGE CONNECTION
4. Permanently attach elbow/perforated disk assembly to
straight portion of pipe using RTV or by cementing as
shown in Fig. 39.
Assembly of Combustion Air Pipe (Direct Vent-2-Pipe
System ONLY)
1. Using Table 13, determine the smallest combustion air
diameter permitted. Pick the larger diameter and use it for
both combustion and vent pipe.
NOTE: Do not count elbows or pipe sections in terminations or
within furnace (All elbows shown in Fig. 44 and Fig. 45 are not
to be counted).
!
UNIT MAY NOT OPERATE
Failure to follow this caution may result in incomplete
combustion, flame disturbance, or flame sense lockout.
When installing combustion air and vent system of short pipe
length, the smallest allowable pipe diameter must be used.
NOTE: A 2-in. (51 mm) diameter pipe must be used within
furnace casing. Make all pipe diameter transitions outside furnace
casing per Fig. 41.
2. If required per Table 13, insert perforated disk assembly
(factory-supplied in loose parts bag) in intake housing
where combustion air pipe will be connected. If half disk
set is required, install only shouldered disk half.
33
TRANSFORMER 24-VAC
CONNECTIONS
PL1 - LOW VOLTAGE MAIN
HARNESS CONNECTOR
PL3
PL2 - HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
CAUTION
A02017