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