Introduction - Bryant 926SA Installation, Start-Up, Operating, Service And Maintenance Instructions

926SA: Installation, Start-up, Operating, Service and Maintenance Instructions
!
IMPORTANT INSTALLATION AND START-UP PROCEDURES
Failure to follow this procedure may result in a nuisance smoke or odor
complaint.
The manifold pressure, gas rate by meter clocking, temperature rise and
operation must be checked after installation. Minor smoke and odor
may be present temporarily after start-up from the manufacturing
process. Some occupants are more sensitive to this minor smoke and
odor. It is recommended that doors and windows be open during the
first heat cycle.

INTRODUCTION

THE BLOWER IS LOCATED
TO THE RIGHT OF THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED TO THE LEFT.
THE BLOWER IS
LOCATED ABOVE THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED DOWNWARD
Fig. 2 – Multipoise Orientations
This 4-way multipoise Category IV condensing furnace is CSA
design-certified as a direct-vent (2-pipe) or non-direct vent (1-pipe)
furnace. See Fig. 2. The furnace is factory-shipped for use with natural
gas. The furnace can be converted in the field for use with propane gas
when a factory-supplied conversion kit is used. Refer to the furnace
rating plate for conversion kit information.
This furnace is not approved for installation in mobile homes,
recreational vehicles, or outdoors.
This furnace is designed for minimum continuous return-air temperature
of 60°F (15°C) db or intermittent operation down to 55°F (13°C) db such
as when used with a night setback thermostat. Return-air temperature
must not exceed 80°F (27°C) db. Failure to follow these return-air
temperature limits may affect reliability of heat exchangers, motors, and
controls. See Fig. 3.
SUPPLY AIR
SEE PRODUCT DATA FOR
ACCESSORY CONDENSATE
TRAP HEATER AND CONDENSATE
DRAIN LINE PROTECTION.
Fig. 3 – Freeze Protection and Return Air Temperature
The furnace should be sized to provide 100 percent of the design heating
load requirement plus any margin that occurs because of furnace model
size capacity increments. None of the furnace model sizes can be used if
the heating load is 20,000 BTU or lower. Use Air Conditioning
Contractors of America (Manual J and S); American Society of Heating,
Refrigerating, and Air-Conditioning Engineers; or other approved
engineering method to calculate heating load estimates and select the
furnace. Excessive oversizing of the furnace may cause the furnace
and/or vent to fail prematurely, customer discomfort and/or vent
freezing.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
NOTICE
THE BLOWER IS
LOCATED BELOW THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED UPWARD.
THE BLOWER IS
LOCATED TO THE LEFT
OF THE BURNER SECTION,
AND CONDITIONED AIR IS
DISCHARGED TO THE RIGHT.
80
60
Failure to follow these guidelines is considered faulty installation and/or
misapplication of the furnace; and resulting failure, damage, or repairs
may impact warranty coverage.
For accessory installation details, refer to the applicable instruction
literature.
NOTE: Remove all shipping materials, loose parts bag, and literature
before operating the furnace. See
FIRE HAZARD
Failure to follow this warning could result in personal injury, death
and/or property damage.
Do not install the furnace on its back or hang furnace with control
compartment facing downward. Safety control operation will be
adversely affected. Never connect return-air ducts to the back of the
furnace. See Fig. 4.
Outlet Restrictor Plate (provided with 40K BTUH
furnaces only; see Note)
Air Intake Pipe Flange
Pipe Flange Gaskets
Sharp Tip Screws (Vent and Inlet Flanges)
A12181
Vent Pipe Coupling Clamps
Pressure Switch Tube
1/2-in. CPVC to 3/4-in. PVC Pipe Adapter
Green Ground Screw
Blunt Tip Screws (Junction Box)
Thermostat Wire Grommet
Drain Extension Tube (Z-pipe) (Provided separately in
NOTE: The 40K models are the only furnaces that receive the outlet
restrictor in loose parts bag. See Maximum Equivalent Vent Length
Table for usage.
/ 27˚C
BACK POSITIONED
DOWNWARD
/ 16˚C
BACK POSITIONED
UPWARD
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Table 2.
WARNING
!
Table 2 – Loose Parts Bag
DESCRIPTION
Vent Pipe Flange
Vent Pipe Coupling
Rubber Drain Elbow
Drain Tube Clamps
Gas Line Grommet
Junction Box Cover
Junction Box Base
furnace)
Fig. 4 – Prohibited Installations
QUANTITY
1
1
1
2
10
1
2
1
1
4
1
1
1
1
1
3
1
1
AIR RETURN
CUT IN BACK
A12182