Bryant 355MAV C Series User Manual

NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
Index Page
DIMENSIONAL DRAWING........................................................2
SAFETY CONSIDERATIONS.....................................................3
Clearances to Combustibles......................................................3
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ....3-4
INTRODUCTION..........................................................................4
APPLICATIONS ......................................................................4-11
General ......................................................................................4
Upflow Applications..............................................................4-6
Downflow Applications.........................................................6-8
Horizontal Left (Supply-Air Discharge) Applications.........8-9
Horizontal Right (Supply-Air Discharge) Applications.....9-11
LOCATION ............................................................................11-12
General...............................................................................11-12
Low-Fire Only Installation.....................................................12
Furnace Location Relative to Cooling Equipment ................12
Hazardous Locations...............................................................12
INSTALLATION....................................................................13-16
Leveling Legs (If Desired).....................................................13
Installation On a Concrete Slab .............................................13
Installation On a Combustible Floor (Downflow
Applications)......................................................................13
Installation In Horizontal Applications..................................14
Filter Arrangement..................................................................14
Bottom Closure Panel.............................................................14
Gas Piping..........................................................................14-16
ELECTRICAL CONNECTIONS...........................................16-19
115-v Wiring......................................................................17-19
24-v Wiring.............................................................................19
Accessories..............................................................................19
DIRECT VENTING ...............................................................19-29
Removal of Existing Furnaces from
Common Vent Systems................................................19-20
Combustion-Air and Vent Piping .....................................20-25
Concentric Vent and Combustion-Air Termination
Kit Installation..............................................................25-27
Multiventing and Vent Terminations................................27-29
CONDENSATE DRAIN..............................................................29
General ....................................................................................29
Application..............................................................................29
Condensate Drain Protection..................................................29
SEQUENCE OF OPERATION..............................................30-32
Self-Test Mode........................................................................30
Heating Mode..........................................................................30
Heat Mode—Two Stage.........................................................30
Emergency Heat Mode......................................................30-31
Cooling Mode .........................................................................31
Heat Pump Mode...............................................................31-32
Continuous Fan Mode ............................................................32
Component Test......................................................................32
Bypass Humidifier Mode........................................................32
Dehumidification Mode..........................................................32
Zone Mode..............................................................................32
START-UP PROCEDURES ..................................................32-37
General...............................................................................32-33
Select Setup Switch Positions ................................................33
Prime Condensate Trap With Water......................................33
Purge Gas Lines ................................................................33-34
Adjustments .......................................................................34-37
Set Gas Input Rate ............................................................34-36
Set Temperature Rise..............................................................36
Set Thermostat Heat Anticipator............................................37
CHECK SAFETY CONTROLS ............................................37-38
Check Primary Limit Control.................................................37
Check Pressure Switch......................................................37-38
CHECKLIST...........................................................................38-39
A93040
®
ama
CANADIAN GAS ASSOCIATION
APPROVED
R
As an ENERGY STAR Partner, BDP Company has deter-
mined that this product meets the ENERGY STAR guidelines
for energy efficiency.
Fig. 1—Multipoise Orientations
A93041
UPFLOW
DOWNFLOW
HORIZONTAL
LEFT
AIRFLOW
AIRFLOW
AIRFLOW
AIRFLOW
HORIZONTAL
RIGHT
installation, start-up,
and operating instructions
4-WAY MULTIPOISE
VARIABLE-CAPACITY
CONDENSING GAS FURNACE
Cancels: II 355M-40-2 II 355M-40-3
6-95
355MAV
Series C
—1—

Bryant 355MAV C Series Specifications

General

Category	Furnace
Brand	Bryant
Fuel Type	Natural Gas
AFUE	95%
Cabinet Type	Upflow/Horizontal
Blower Motor	Variable-speed
Warranty	10 years limited
Model Series	355MAV C Series

Summary

Safety Considerations

Electrostatic Discharge (ESD) Precautions

Precautions to prevent electrostatic discharge during furnace installation and servicing.

Minimum Clearance to Combustible Material

Specifies minimum clearances to combustible materials for furnace installation.

Introduction

Applications

Details different furnace installation applications and modifications required.

Location

Hazardous Locations

Guidelines for installing the furnace in hazardous locations to ensure safety.

Installation

Gas Piping

Guidelines for installing gas piping in accordance with national and local codes.

Filter Arrangement

Instructions on filter placement and selection for proper airflow and system protection.

Electrical Connections

115-V Wiring

Details on connecting the 115-v power supply to the furnace, including safety and specifications.

24-V Wiring

Instructions for making 24-v thermostat connections to the control center.

Accessories

Electronic Air Cleaner (EAC)

Details on connecting and installing an Electronic Air Cleaner (EAC) accessory.

Humidifier (HUM)

Information on connecting a 24-v humidifier to the furnace control center.

Direct Venting

Removal of Existing Furnaces From Common Vent Systems

Steps for removing existing furnaces from common vent systems safely and correctly.

Combustion-Air and Vent Piping

General

General information on combustion-air and vent pipe fittings and standards.

Combustion-Air and Vent Pipe Diameter

Guidance on determining the correct diameter for combustion-air and vent pipes.

Combustion-Air and Vent Pipe Attachment

Instructions for attaching combustion-air and vent pipes to the furnace and termination.

Concentric Vent and Combustion-Air Termination Kit Installation

Extended Exposed Sidewall Pipes

Instructions for extending and insulating exposed sidewall pipes for venting.

Multiventing and Vent Terminations

Two-Pipe Termination Kit

Steps for installing a two-pipe termination kit for venting.

Concentric Vent/Air Termination Kit

Steps for installing a concentric vent/air termination kit for venting.

Condensate Drain

Application

Information on combining furnace, A/C, and humidifier drains and proper termination.

Condensate Drain Protection

Measures to protect the condensate trap and drain line from freezing conditions.

Sequence of Operation

Heating Mode

Describes the sequence of operations during the furnace heating cycle.

Cooling Mode

Details the sequence of operations for the furnace cooling mode.

Heat Pump Mode

Explains the operational sequence when the furnace operates in heat pump mode.

Start-Up Procedures

Component Test

Procedures to test individual furnace components for proper function and diagnosis.

Select Setup Switch Positions

How to set up various switches for A/C, continuous fan, and other operating modes.

Prime Condensate Trap With Water

Instructions for priming the condensate trap to ensure proper drainage.

Adjustments

Set Gas Input Rate

Procedures for setting the correct gas input rate based on altitude and gas properties.

Set Temperature Rise

How to measure and set the furnace's temperature rise within specified limits.

Set Thermostat Heat Anticipator

Adjusting the thermostat's heat anticipator for optimal performance and cycle control.

Check Safety Controls

Check Primary Limit Control

Procedures to test the primary limit control for proper furnace overheat protection.

Check Pressure Switch

Steps to check the operation of the pressure switch for draft inducer verification.

Checklist

Installation Checklist

A comprehensive checklist for installation tasks to ensure proper setup.

Start-Up Checklist

A checklist for start-up procedures to verify correct operation and safety.