installation, start-up,

345MAV

and operating instructions

Series B

4-WAY MULTIPOISE

FIXED-CAPACITY

 

CONDENSING GAS FURNACE

 

 

 

Cancels: II 345M-40-2

II 345M-40-3

 

5-99

® ama

CANADIAN GAS ASSOCIATION

A P P R O V E D

R

 

A93040

NOTE: Read the entire instruction manual before starting the

installation.

 

Index

Page

DIMENSIONAL DRAWING

2

SAFETY CONSIDERATIONS

3

As an ENERGY STAR® Partner, BRYANT Heat-

ing & Cooling Systems

Company has determined REGISTERED QUALITY SYSTEM that this product meets the

ENERGY STAR® guide- lines for energy efficiency.

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

11-13

General

11-12

Furnace Location Relative to Cooling Equipment

12

Hazardous Locations

13

AIR FOR COMBUSTION AND VENTILATION

13-14

General

13

Unconfined Space

13

Confined Space

13-14

AIRFLOW

UPFLOW

HORIZONTAL LEFT

DOWNFLOW

AIRFLOW

HORIZONTAL

RIGHT

AIRFLOW

INSTALLATION

14-19

Leveling Legs (If Desired)

14-15

Installation On a Concrete Slab

15

Installation On a Combustible Floor (Downflow

 

Applications)

15

Installation In Horizontal Applications

16

Air Ducts

16-17

Filter Arrangement

17

Bottom Closure Panel

17-18

Gas Piping

18-19

ELECTRICAL CONNECTIONS

19-22

115-v Wiring

20-21

24-v Wiring

22

Accessories

22

VENTING

22-29

Removal of Existing Furnaces from

 

Common Vent Systems

22-23

Combustion-Air and Vent Piping

29

Vent Termination

29

Multiventing

29

CONDENSATE DRAIN

29-31

General

29

Ð1Ð

AIRFLOW

 

 

A93041

Fig. 1ÐMultipoise Orientations

 

Application

29

Condensate Drain Protection

29-31

SEQUENCE OF OPERATION

31-32

Heating Mode

31

Cooling Mode

31

Continuous Blower Mode

31

Heat Pump Mode

31

Component Test

32

START-UP PROCEDURES

32-38

General

32

Prime Condensate Trap With Water

32-33

Purge Gas Lines

33

Adjustments

33-38

Set Gas Input Rate

33-38

Set Temperature Rise

38

Blower Off Delay (Heat Mode)

38

Set Thermostat Heat Anticipator

38

CHECK SAFETY CONTROLS

39

Check Primary Limit Control

39

Check Pressure Switch

39

CHECKLIST

39-40

Page 1
Image 1
Bryant 345MAV instruction manual Electrostatic Discharge ESD Precautions, Ð1Ð

345MAV specifications

The Bryant 345MAV is a premier choice in the realm of residential heating and cooling systems, encapsulating advanced technologies, high efficiency, and remarkable performance. Designed for homeowners seeking reliability and comfort, this model exemplifies modern HVAC (Heating, Ventilation, and Air Conditioning) innovations.

One standout feature of the Bryant 345MAV is its impressive energy efficiency. With a high SEER (Seasonal Energy Efficiency Ratio) rating, it operates at peak levels while consuming less energy. This not only reduces utility bills but also supports environmental sustainability, making it an ideal selection for eco-conscious consumers. The model employs variable-speed technology, which allows the system to adjust its output based on current heating and cooling needs. As a result, it provides consistent indoor comfort while minimizing temperature fluctuations.

The Bryant 345MAV incorporates advanced refrigerant technologies designed for optimal performance. It uses R-410A refrigerant, which is known for its lower environmental impact compared to traditional refrigerants like R-22. This environmentally friendly aspect aligns with regulations aimed at reducing ozone depletion, thereby promoting a greener approach to heating and cooling.

Reliability is another hallmark of the Bryant 345MAV. Engineered with precision, this model features a durable build designed to withstand varying weather conditions. The system is equipped with a robust compressor that is engineered for longevity and minimal noise during operation. Homeowners will appreciate the quiet performance of the 345MAV, ensuring peace in their living spaces.

Comfort also extends to the user experience with the inclusion of a smart thermostat option. This integration allows homeowners to manage their heating and cooling systems remotely, enhancing convenience and control. Programmable settings can optimize energy use based on individual schedules, facilitating both comfort and savings.

In summary, the Bryant 345MAV is a top-tier solution for residential climate control, blending energy efficiency, innovative technology, and unmatched reliability. With its variable-speed operation, environmentally friendly refrigerant, and smart features, the 345MAV represents a significant advancement in the HVAC field. Homeowners investing in this model can expect a system that not only meets their heating and cooling needs but exceeds them in terms of efficiency and comfort.