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Bryant 4-Way Multipoise Fixed-Capacity Direct-Vent Condensing Gas 340MAV User Manual

Installation, start-up, and operating instructions, 340mav series d

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NOTE:

Read the entire instruction manual before starting the

installation.

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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..............................................................4-7
Downflow Applications.........................................................7-8
Horizontal Left (Supply-Air Discharge) Applications .........8-9
Horizontal Right (Supply-Air Discharge) Applications .....9-11

LOCATION ............................................................................11-12

General...............................................................................11-12
Furnace Location Relative to Cooling Equipment ................12
Hazardous Locations...............................................................12

INSTALLATION....................................................................13-17

Leveling Legs (If Desired) .....................................................13
Installation In Upflow or Downflow Applications ..........13-15
Installation In Horizontal Applications ..................................15
Filter Arrangement..................................................................16
Bottom Closure Panel.............................................................16
Gas Piping...............................................................................17

ELECTRICAL CONNECTIONS...........................................17-20

115-v Wiring......................................................................17-18
24-v Wiring.............................................................................18
Wiring Diagram ......................................................................19
Accessories..............................................................................20

DIRECT VENTING ...............................................................21-29

Removal of Existing Furnaces from

Common Vent Systems.....................................................21

Combustion-Air and Vent Piping .....................................21-27
Concentric Vent and Combustion-Air Termination

Kit Installation..............................................................27-29

Multiventing and Vent Termination.......................................29

CONDENSATE DRAIN ........................................................29-31

General ....................................................................................29
Application.........................................................................29-31
Condensate Drain Protection ..................................................31

SEQUENCE OF OPERATION..............................................31-33

Heating Mode ....................................................................31-32
Cooling Mode .........................................................................32
Continuous Blower Mode.......................................................32
Heat Pump Mode ....................................................................32
Component Test.................................................................32-33

START-UP PROCEDURES ..................................................33-41

General ....................................................................................33
Prime Condensate Trap With Water ......................................33
Purge Gas Lines......................................................................34
Adjustments .......................................................................34-41
Set Gas Input Rate ............................................................34-40
Set Temperature Rise ........................................................40-41
Blower Off Delay (Heat Mode) .............................................41
Set Thermostat Heat Anticipator............................................41

CHECK SAFETY CONTROLS..................................................41

Check Primary Limit Control.................................................41
Check Pressure Switch ...........................................................41

CHECKLIST...........................................................................41-42

A93040

®

ama

CANADIAN GAS ASSOCIATION

A PP R O VED

R

As an ENERGY STAR

SM

Partner,

Bryant/Day

&

Night has determined that
this product meets the EN-
ERGY STAR guidelines
for energy efficiency.

CERTIFICATION OF MANUFACTURING SITE

Fig. 1—Multipoise Orientations

A93041

UPFLOW

DOWNFLOW

HORIZONTAL

LEFT

AIRFLOW

AIRFLOW

AIRFLOW

AIRFLOW

HORIZONTAL

RIGHT

installation, start-up,
and operating instructions

4-WAY MULTIPOISE
FIXED-CAPACITY DIRECT-VENT
CONDENSING GAS FURNACE

Cancels:

II 340M-40-3

II 340M-40-4

12-96

340MAV

Series D

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