Carrier bryant 935CB Installation, Start-Up, Operating And Service And Maintenance Instructions

935CB
Single-Stage, Upflow/Horizontal Communicating,
Variable Speed ECM, Ultra Low NOx, 35-in Tall
Condensing Gas Furnace
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
Table 1 – Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 2 – Minimum Clearances to Combustible Materials for
All Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3 – Loose Parts Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CODES AND STANDARDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCE-
DURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
AIR FOR COMBUSTION AND VENTILATION . . . . . . . . . . . . . . 8
Table 4 – Minimum Free Area Required for Each Combustion
Air Opening or Duct to Outdoors . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 5 – Minimum Space Volumes for 100% Combustion,
Ventilation and Dilution Air from Outdoors . . . . . . . . . . . . . . . . . 9
CONDENSATE TRAP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Condensate Drain Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 6 – Condensate Trap Configurations . . . . . . . . . . . . . . . . . 13
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 7 – Evaporator Coil Spacer or Shield Requirements. . . . . 16
Table 8 – Opening Dimensions - In. (mm) . . . . . . . . . . . . . . . . . 20
FILTER ARRANGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 9 – Optional Filter Media Pressure Drop (Clean) Versus
Airflow - in. w.c. (Pa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 10 – Optional Filter Media Pressure Drop (Clean) Versus
Face Velocity- in. w.c. (Pa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 11 – Air Filter Selection and Duct Sizing - In. (mm) . . . . 23
GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 12 – Maximum Capacity of Pipe . . . . . . . . . . . . . . . . . . . . 23
ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 13 – Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 14 – Vent Termination Kit for Direct Vent (2-pipe) Sys-
tems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 15 – Approved Combustion-Air and Vent Pipe, Fitting
and Cement Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 16 – Maximum Equivalent Vent Length - Ft. . . . . . . . . . . 38
Table 17 – Deductions from Maximum Equivalent Vent Length
- Ft.(M). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 18 – Maximum Allowable Exposed Vent Length in Un-
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
Service and Maintenance Instructions
on the referenced subject, which is represented only by the standard in its entirety.
conditioned Space - Ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 19 – Hanger Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
AIRFLOW DELIVERY - CFM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Table 20 – 48060C17 Airflow in CFM . . . . . . . . . . . . . . . . . . . . 45
Table 21 – 60080C21 Airflow in CFM . . . . . . . . . . . . . . . . . . . . 45
Table 22 – 66100C21 Airflow in CFM . . . . . . . . . . . . . . . . . . . . 46
FURNACE CONTROL PROGRAMMING AND NAVIGATION 46
Table 23 – System Status Display Codes . . . . . . . . . . . . . . . . . . 47
Table 24 – Main Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . 47
SERVICE LABEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
START-UP, ADJUSTMENT, AND SAFETY CHECK . . . . . . . . . 49
Table 25 – Test Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Table 26 – Altitude Derate Multiplier for USA. . . . . . . . . . . . . . 52
Table 27 – Gas Rate (CU ft./hr). . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table 28 – Gas Valve Outlet Pressure for Gas Heat Values at
Altitude - 60,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 29 – Gas Valve Outlet Pressure for Gas Heat Values at
Altitude - 80,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 30 – Gas Valve Outlet Pressure for Gas Heat Values at
Altitude - 100,000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
SERVICE AND MAINTENANCE PROCEDURES. . . . . . . . . . . . 56
ELECTRICAL CONTROLS AND WIRING . . . . . . . . . . . . . . . . . 57
CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
WINTERIZATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
PARTS REPLACEMENT INFORMATION GUIDE . . . . . . . . . . . 68
MODEL NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
TRAINING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
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A230292
A200352