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INSTALLATION

INSTRUCTIONS

SEALED COMBUSTION

DOWNFLOW GAS FURNACES

1973--106/F Rev.2 (599)

Supersedes: 1973--106/F Rev.1 (1098)

(Forced Draft with Direct HSI)

MODELS DLAS, DGAT AND DGAM

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

IMPORTANT:

Only individuals having proven experi-

ence with this type of equipment should attempt to per-

form set--up.
Proper furnace set--up and adjustment is the responsibil-

ity of the retailer/homeowner and is not covered under

warranty.

FURNACE SET--UP CHECK LIST

-

Has roof jack crown been correctly installed?

-

Has furnace gas valve and burner orifice been cor-

rectly converted for L.P. gas where applicable?

-

Has furnace gas valve been de--rated for altitudes

above 2000 feet where applicable?

-

Is gas line outlet pressure properly set for fuel type?

(natural gas is 3.5” W.C.; L.P. is 10” W.C.)

-

Is primary air properly adjusted per installation in-

structions?

-

Is cross--over duct installed per home builder and

UPG installation instructions?

-

Has furnace been operated through a complete

heating cycle?

Improper installation, adjustment, service or

maintenance can cause injury or property dam-

age. Please refer to all the instructions of this

manual for proper installation procedures. Im-

proper installation will void the warranty.

The furnace shall be installed so the electrical

components are protected from water.

The furnace is not to be used for temporary

heating of buildings or structures under

constructions.

Do not test the fuel system at more than 14 inch-

es water column after furnace has been con-

nected to the fuel line. Such testing may void

the warranty. Any test run above 14 inches wa-

ter column may damage the furnace control

valve which could cause an explosion, fire, or

asphyxiation.

Improper installation may damage equipment, can

create a shock hazard, and will void the warranty.

NOTE:

The words “Shall” or “Must” indicate a

requirement which is essential to satisfactory

and safe product performance.

The words “Should” or “May” indicate a

recommendation or advice which is not

essential and not required but which may be

useful or helpful.

IMPORTANT:

These instructions are primarily in-

tended to assist qualified individuals experienced in the

proper installation of heating and/ or air conditioning ap-

pliances. Some local codes require licensed installation

service personnel for this type of equipment. Read all in-

structions carefully before starting the installation.

Summary of Contents for DLAS

Page 1: ...ation adjustment service or maintenance can cause injury or property dam age Please refer to all the instructions of this manual for proper installation procedures Im proper installation will void the...

Page 2: ...nace Doors 19 Finish and Trim 19 Furnace and Air Conditioner Installations 19 HIGH ALTITUDE DERATION CHART 20 Natural Gas 20 Propane Gas 20 REPAIR PARTS 21 22 LIST OF FIGURES FIGURE 1 Furnace Dimensio...

Page 3: ...0BDF NATURAL GAS 70 000 57 000 DGAT075BDF NATURAL GAS 75 000 61 000 DGAT090BDF NATURAL GAS 90 000 72 000 DLAS Automatic Ignition Heating Only No Coil Cabinet Model No Factory Equipped for use with Inp...

Page 4: ...nt CSA stan dard CAN CGA Z240 4 2 Installation Require ments for Propane Appliances and Equipment in Recreational Vehicles 2 Unit electrical wiring and grounding shall complywith current CSA standard...

Page 5: ...cation of 200 or less 6 Non combustible pans having one inch upturned flanges are located beneath openings in the floor re turn duct system 7 Wiring materials located in the return duct system conform...

Page 6: ...er grill an undercut of 2 1 2 will provide 50 Sq In of free area 1 The closet door MUST have a minimum of 250 Square In ches of free area in the upper half of the door and a mini mum of 50 Square Inch...

Page 7: ...installed on a new home do the following 1 Inspect the furnace top collars for signs of insulation or ceiling debris which might have fallen in during cutting of the ceiling and roof holes Remove all...

Page 8: ...ITCH SLANT FLASHING 3 12 PITCH DLAS COAS Furnaces DGAT DGAM COAT CGAT Furnace Installation Dimensions Installation Dimensions A Adjustable Height B Adjustable Height 4000 7101 C 4000 7121 C 4000 7141...

Page 9: ...DGAT DGAM COAT CGAT Furnace Installation Dimensions Installation Dimensions A Adjustable Height B Adjustable Height 4000 8101 C 4000 8181 C 4000 9161 A 4000 9181 A 85 to 101 99 to 129 101 to 117 115 t...

Page 10: ...he furnace may be installed on combustible flooring without a separate sub base DUCT CONNECTOR DIMENSIONS DUCT CONNECTOR DIMENSIONS DUCT CONNECTORS FOR SCREW ATTACHMENT DUCT CONNECTORS FOR TAB ATTACHM...

Page 11: ...0 715 and U L standard 181 INSTALLATION OF TAB ATTACHMENT DUCT CONNECTORS 1 Make floor cut out as shown in figure 8 2 Determine the depth of the floor cavity from the sur face of the floor to the top...

Page 12: ...w hole is provided in the pipe and collar Excessively long screws may extend to flue pipe and puncture it Screws are not to exceed 1 1 2 in length NOTE Combustion air tube and flue pipe are part of th...

Page 13: ...n the left side of the furnace See Figure 14 If conduit is used it should be secured to the control box 3 Connect the hot wire to the BLACK pigtail lead and the neutral wire to the WHITE pigtail lead...

Page 14: ...bove the floor The preferred location is on an inside wall situated in an area with good air circulation and where the temperature will be reasonably representative of other living areas the thermosta...

Page 15: ...itch To Earth Ground Neutral L1 115 VAC To A C Condensing Unit If equipped Incoming Power Must Be Polarized Observe Color Coding NEUTRALS Ground Screw HEAT COOL L1 XFMR COM 24 VAC RED BLK BRN WHT WHT...

Page 16: ...Earth Ground Neutral L1 115 VAC To A C Condensing Unit If equipped Incoming Power Must Be Polarized Observe Color Coding NEUTRALS Ground Screw HEAT COOL L1 XFMR COM 24 VAC RED BLK WHT WHT BLK BLU RED...

Page 17: ...r is then reduced to 10 W C IMPORTANT When converting valve from or to Pro pane gas it will be necessary to change main burner ori fice to prevent an underfired or overfired condition See label inside...

Page 18: ...PRONOUNCED YELLOW WITH ORANGE TIPS LIGHT BLUE NO BLUE TIPS EXTENDING FROM THE END OF THE BURNER DARK BLUE DARK BLUE LONG AND EXTREMELY PRONOUNCED BLUE TIPS EXTENDING FROM THE END OF THE BURNER WHTISH...

Page 19: ...e and air condi tioner form operating at the same time This interlock system usually contains a heat cool switch which must be turned to either HEAT or COOL to activate either heating or cooling opera...

Page 20: ...0 128 30 9951 1281 0 136 29 9951 1361 0 152 24 9951 1521 PROPANE GAS 56 000 Input 70 000 Input 75 000 Input 90 000 Input Elevation Orifice Dia Drill Size Part Orifice Dia Drill Size Part Orifice Dia D...

Page 21: ...flow Furnace Repair Parts List for DGAM056BDF DLAS056BDF DGAM075BDF DLAS075BDF Repair Parts List for DGAT056BDF DGAT070BDF DGAT075BDF DGAT090BDF 13 26 27 28 15 14 14 30 34 35 33 32 31 29 22 21 16 23 2...

Page 22: ...EN 145 CLOSE 115 Limit Switch OPEN 150_ CLOSE 120_ 21 All 7970 5851 A Burner Assembly Less Gas Valve 22 All 1474 0521 Hot Surface Ignitor 23 All 7970 179 Ignitor Shield 24 All 7945 1631 A Mounting Pla...

Page 23: ...23 Unitary Products Group...

Page 24: ...ary Products Group Subject to change without notice Printed in U S A Copyright E by Unitary Products Group 1999 All rights reserved 1973 106 F Rev 2 599 5005 York Drive Unitary Products Group Norman O...

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