Bryant 987MB Installation, Start-Up, Operating And Service And Maintenance Instructions

987MB
Modulating, High Efficiency Condensing Gas
Furnace, 4-Way Multipoise
Installation, Start-up, Operating and Service
NOTE: Read the entire instruction manual before starting the
installation.

TABLE OF CONTENTS

REQUIRED NOTICE FOR MASSACHUSETTS INSTALLATIONS
IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 1 - Minimum Clearances to Combustible Materials for All Units
4
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 2 - Loose Parts Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CODES AND STANDARDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCE-
DURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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 . . . . . . . . . . . . . . . . . . . . . . . 9
CONDENSATE TRAP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
CONDENSATE DRAIN CONNECTION . . . . . . . . . . . . . . . . . . . . 11
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 5 - Opening Dimensions - In. (mm) . . . . . . . . . . . . . . . . . 16
Table 6 - Filter Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 7 - Cooling4 and Heating Air Delivery - CFM (Bottom Return5
With Filter). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 8 - Maximum Capacity of Pipe . . . . . . . . . . . . . . . . . . . . . 25
ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 9 - Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 10 - Vent Termination Kit for Direct Vent (2-pipe) Systems35
Table 11 - Maximum Equivalent Vent Length - Ft. . . . . . . . . . . 42
Table 12 - Deductions from Maximum Equivalent Vent Length - Ft.
(M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 13 - Maximum Allowable Exposed Vent Lengths Insulation Ta-
ble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Maximum Allowable Exposed Vent Length in Unconditioned Space - Ft.
46
Maximum Allowable Exposed Vent Length in Unconditioned Space -
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Table 14 - Hanger Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 15 - Approved Combustion-Air and Vent Pipe, Fitting and Ce-
ment Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
START-UP, ADJUSTMENT, AND SAFETY CHECK . . . . . . . . . 51
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
and Maintenance Instructions
on the referenced subject, which is represented only by the standard in its entirety.
Table 16 - Altitude Derate Multiplier for U.S.A.* . . . . . . . . . . . 53
Table 17 - Gas Rate (CU ft./hr). . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 18 - Blower Off Delay Setup Switch . . . . . . . . . . . . . . . . 57
Table 19 - Orifice Size and Manifold Pressure (In. W.C.) for Gas Input
Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Table 20 - Orifice Size and Manifold Pressure (In. W.C.) for Gas Input
Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
SERVICE AND MAINTENANCE PROCEDURES. . . . . . . . . . . . 60
Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
PARTS REPLACEMENT INFORMATION GUIDE . . . . . . . . . . . 76
MODEL NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
TRAINING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
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.
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