Bryant 935CA Installation, Start-Up, Operating And Service And Maintenance Instructions

935CA
Single-Stage, Upflow/Horizontal Communicating,
Variable Speed ECM, Ultra Low NOx, 35-in Tall
Condensing Gas Furnace
Service and Maintenance Instructions
NOTE: Read the entire instruction manual before starting the
installation.
Approved for installations up to 5,400 feet (1646 meters)

TABLE OF CONTENTS

REQUIRED NOTICE FOR MASSACHUSETTS INSTALLATIONS2
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 1 - Minimum Clearances to Combustible Materials for All Units
4
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 2 - Loose Parts Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CODES AND STANDARDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCE-
DURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
AIR FOR COMBUSTION AND VENTILATION . . . . . . . . . . . . . . 8
Table 3 - Minimum Free Area Required for Each Combustion Air
Opening or Duct to Outdoors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 4 - Minimum Space Volumes for 100% Combustion, Ventila-
tion and Dilution Air from Outdoors . . . . . . . . . . . . . . . . . . . . . . 10
CONDENSATE TRAP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Condensate Drain Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 5 - Condensate Trap Configurations . . . . . . . . . . . . . . . . . 12
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 6 - Evaporator Coil Spacer or Shield Requirements. . . . . 15
AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 7 - Air Filter Selection and Duct Sizing - In. (mm) . . . . . 20
Table 8 - Opening Dimensions - In. (mm) . . . . . . . . . . . . . . . . . 20
Table 9 - Filter Media Pressure Drop (Clean) Versus Airflow - In.
W.C. (Pa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 10 - Filter Media Pressure Drop (Clean) Versus Face Velocity-
In. W.C. (Pa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 11 - Air Delivery - CFM (With Filter) . . . . . . . . . . . . . . . 21
GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 12 - Maximum Capacity of Pipe . . . . . . . . . . . . . . . . . . . . 24
ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 13 - Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 14 - Vent Termination Kit for Direct Vent (2-pipe) Systems31
Table 15 - Hanger Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 16 - Approved Combustion-Air and Vent Pipe, Fitting and Ce-
ment Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 17 - Maximum Allowable Exposed Vent Length in Uncondi-
tioned Space - Ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 18 - Maximum Equivalent Vent Length - Ft. . . . . . . . . . . 41
Table 19 - Deductions from Maximum Equivalent Vent Length - Ft.
(M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Portions of the text and tables are reprinted from NFPA 54/ANSI Z223.1E, with permission of National Fire Protection Association, Quincy, MA
02269 and American Gas Association, Washington DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSI
Installation, Start-up, Operating and
on the referenced subject, which is represented only by the standard in its entirety.
START-UP, ADJUSTMENT, AND SAFETY CHECK . . . . . . . . . 47
Table 20 - Altitude Derate Multiplier for USA. . . . . . . . . . . . . . 49
Table 21 - Gas Valve Outlet Pressure for Gas Heat Values at Altitude
- 60,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Table 22 - Gas Valve Outlet Pressure for Gas Heat Values at Altitude
- 80,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Table 23 - Gas Valve Outlet Pressure for Gas Heat Values at Altitude
- 100,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 24 - Gas Rate (CU ft./hr). . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 25 - Blower Off Delay Setup Switch . . . . . . . . . . . . . . . . 52
SERVICE AND MAINTENANCE PROCEDURES. . . . . . . . . . . . 53
WINTERIZATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
SERVICE GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
PARTS REPLACEMENT INFORMATION GUIDE . . . . . . . . . . . 68
MODEL NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
TRAINING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury and/or
death.
Carbon Monoxide (CO) is a colorless, odorless, and tasteless poisonous
gas that can be fatal when inhaled. Follow all installation, maintenance,
and service instructions. See additional information below regarding
the installation of a CO Alarm.
Most states in the USA and jurisdictions in Canada have laws that
require the use of Carbon Monoxide (CO) alarms with fuel burning
products. Examples of fuel burning products are furnaces, boilers, space
heaters, generators, water heaters, stoves/ranges, clothes dryers,
fireplaces, incinerators, automobiles, and other internal combustion
engines. Even if there are no laws in your jurisdiction requiring a CO
Alarm, it's highly recommended that whenever any fuel burning product
is used in or around the home or business that the dwelling be equipped
with a CO Alarm(s). The Consumer Product Safety Commission
recommends the use of CO Alarm(s). The CO Alarm(s) must be
installed, operated, and maintained according to the CO Alarm
manufacturer's instructions. For more information about Carbon
Monoxide, local laws, or to purchase a CO Alarm online, please visit the
following website. https://www.kidde.com.
A200352