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Evcon DGAT075BDD - User Manual

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INSTALLATION INSTRUCTIONS
DLAS MODELS
(No Coil Cabinet)
DGAT & DGAM MODELS
(With Built--In Coil Cabinet)
For Installation In:
1. Manufactured (Mobile) Homes
2. Recreational Vehicles & Park
Models
3. Modular Homes & Buildings
SEALED COMBUSTION
DOWNFLOW GAS FURNACES
Forced Draft with Direct Ignition (Hot Surface)
FURNACE SET---UP CHECK LIST
IMPORTANT: ONLY IND I VIDUALS HAVING PROVEN EXPERIENCE WITH THIS TYPE OF EQUIPMENT
SHOULD ATTEMPT TO PERFORM SET-- UP.
- HAS ROOF JACK CROWN B EEN CORRECTLY
INSTALLED?
- HASFURNACEGASVALVEANDBURNERORI-
FICE BEEN CORRECTLY CONVERTED FOR L.P.
GAS WHERE APPLICABLE?
- HASFURNACEGASVALVEBEENDE---RATED
FOR ALTITUD ES ABOVE 2000 FEET WHERE
APPLICABLE?
- IS GAS LINE OUTLET PRES SURE PROPERLY
SET FOR FUEL TYPE? (NATURALGASIS3.5
W.C.; L.P. IS 10 W.C.)
- IS PRIMARY AIR PROPERLY ADJUSTED PER
INSTALLATION INSTRUCTIONS?
- IS CROSS---OVER DUCT INSTALLED PER
HOME BUILDER AND EVCON INSTALLATION
INSTRUCTIONS?
- HAS FURNACE BEEN OPERATED THROUGH A
COMPLETE HEATING CYCLE?
IMPORTANT: PROPER FURNACE SET--UP AND ADJUSTMENT IS THE RESPONSIBILITY OF THE
RET AILER/HOMEOWNER AND IS NOT COVERED UNDER W ARRANTY.

Table of Contents

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Evcon DGAT075BDD Specifications

General IconGeneral
ModelDGAT075BDD
AFUE Rating80%
Blower MotorPSC
Fuel TypeNatural Gas
Ignition TypeDirect Spark Ignition
Thermostat CompatibilityStandard
Heating Capacity75, 000 BTU
Weight120 lbs

Summary

INSTALLATION INSTRUCTIONS

FURNACE SET-UP CHECK LIST

A checklist to ensure proper initial setup and configuration of the gas furnace before operation.

GENERAL SPECIFICATIONS AND INSTRUCTIONS

FURNACE SPECIFICATIONS

Details the input/output BTUH and model numbers for DGAM, DGAT, and DLAS series furnaces.

INSTALLATION STANDARDS

Outlines critical codes, regulations, and clearances required for safe and compliant furnace installation.

RETURN AIR REQUIREMENTS

Specifies requirements for return air systems, especially for closet installations of sealed combustion furnaces.

SPECIAL CLOSET INSTALLATIONS

Provides detailed clearance requirements for furnace doors in closet installations with varying gaps.

AIR DISTRIBUTION SYSTEMS

Illustrates three typical supply duct distribution systems and guidelines for air flow design.

ROOF JACKS

Covers the location, cutting, and installation procedures for roof jacks, ensuring proper venting.

CEILING RINGS

Discusses the use and purpose of ceiling rings for fire stop requirements around roof jack penetrations.

DUCT CONNECTORS

Details the selection, application, and installation of various duct connectors for furnace hookup.

TEMPLATE & CUTOUT DIMENSIONS

Provides dimensions for creating templates and cutouts necessary for furnace and duct connections.

DLAS SERIES FURNACES

Installation Procedure for DLAS Furnace

Step-by-step instructions for installing the DLAS series furnace, including sub-base and duct connections.

DGAT & DGAM SERIES FURNACES

Installation Procedure for DGAT & DGAM Furnaces

Step-by-step instructions for installing the DGAT & DGAM series furnaces, focusing on floor and duct connections.

CONNECTING ROOF JACK TO FURNACE

VENT SYSTEM INSTALLATION INSTRUCTIONS

EXISTING FURNACE REPLACEMENT

Guidelines for replacing an existing furnace, emphasizing the need for a new vent system.

NEW HOME INSTALLATION

Procedures for installing the vent system when the furnace is part of a new home construction.

INSTALLATION IN SNOW REGIONS

Recommendations for vent system extensions in areas prone to heavy snow accumulation.

ELECTRICAL WIRING

CONNECT POWER SUPPLY WIRES

Instructions for safely connecting the incoming 115-volt power supply wires to the furnace.

CONNECT THERMOSTAT WIRES

Guidance on connecting the 24-volt thermostat wires to the furnace control system.

WALL THERMOSTAT

Advice on selecting an optimal location for the wall thermostat to ensure accurate temperature readings.

THERMOSTAT WIRING FOR DGAT AND DGAM SERIES

THERMOSTAT WIRING FOR DLAS (HEAT ONLY) SERIES

WIRING DIAGRAMS

GAS PIPING

INSTALLATION AND CHECKING OF GAS LINE

Procedures for safely installing and checking the gas supply line connections to the furnace.

Observing Burner Operation

Steps to observe burner ignition, flame appearance, and operation cycles for correct performance.

Combustion Air

Guidance on ensuring adequate combustion air supply and adjusting the air shutter for efficient burner operation.

If Furnace Fails to Operate Properly

FINAL PROCEDURE

Install Furnace Doors

Instructions for properly installing the furnace's bottom and upper access doors.

Finish and Trim

Guidance on finishing and trimming alcove and closet installations after the furnace is in place.

Furnace and Air Conditioner Installations

Considerations for installing the furnace in conjunction with an air conditioning unit, including interlocks.

MANUFACTURED HOUSING DERATION CHART

DGAM, DGAT & DLAS SERIES HSI Gas Downflow Furnace

Repair Parts List for:

An introduction to the parts list for various DGAM, DGAT, and DLAS HSI gas downflow furnace models.

BLOWER PARTS

Lists specific part numbers for blower components used in the DGAM, DGAT, and DLAS furnaces.

BURNER ORIFICE CHART

Provides a chart detailing burner orifice sizes and part numbers for different gas types and elevations.

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