Empire Heating Systems DV-25T-1 Quick start guide

Page 1
INSTALLATION INSTRUCTIONS
AND
OWNER'S MANUAL
WARNING: If not installed, operated
and maintained in accordance with the
manufacturer's instructions, this product could
expose you to substances in fuel or from fuel
combustion which can cause death or serious
illness.
This appliance may be installed in an aftermarket,
permanently located, manufactured home (USA
only) or mobile home, where not prohibited by
state or local codes.
This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is
not convertible for use with other gases, unless
a certified kit is used.
Installer: Leave this manual with the appli-
ance.
Consumer: Retain this manual for future refer-
ence.
— Do not store or use gasoline or other flamma-
ble vapors and liquids in the vicinity of this or
any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas suppli-
er’s instructions.
• If you cannot reach your gas supplier, call
the fire department.
— Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
WARNING: If the information in these instruc-
tions are not followed exactly, a fire or explosion
may result causing property damage, personal
injury or loss of life.
DIRECT VENT
WALL FURNACE
MODELS
DV-25T-1
DV-35T-1

13117-9-0907Page 2
SECTION PAGE
Important Safety Information ......................................................................................................................3
Vent Kit Information ....................................................................................................................................3
Safety Information for Users of LP Gas ......................................................................................................4
Requirements for Massachusetts ..................................................................................................................5
Introduction ..................................................................................................................................................6
Specifications ...............................................................................................................................................6
Gas Supply ...................................................................................................................................................7
Clearances ....................................................................................................................................................8
Installation Instructions .......................................................................................................................... 8-10
Thermostat Location .................................................................................................................................11
Lighting Instructions .................................................................................................................................12
Pilot Flame Characteristics .......................................................................................................................13
Main Burner Flame Characteristics ...........................................................................................................13
Maintenance ...............................................................................................................................................14
Troubleshooting .........................................................................................................................................14
How to Order Repair Parts ........................................................................................................................15
Parts List ....................................................................................................................................................15
Parts View .................................................................................................................................................16
Optional Blower Installation Instructions ............................................................................................ 17-18
Service Notes .............................................................................................................................................19
TABLE OF CONTENTS

13117-9-0907 Page 3
• Due to high temperatures the appliance should be located
out of traffic and away from furniture and draperies.
• Children and adults should be alerted to the hazards of
high surface temperatures and should stay away to avoid
burns or clothing ignition.
• Young children should be carefully supervised when they
are in the same room as the appliance.
• Clothing or other flammable material should not be placed
on or near the appliance.
• Any safety screen or guard removed for servicing an
appliance must be replaced prior to operating the ap-
pliance.
• Keep burner and control compartment clean.
• Vent cap hot while furnace is in operation.
• Installation and repair should be done by a QUALIFIED
SERVICE PERSON. The appliance should be inspected
before use and at least annually by a qualified service
person. More frequent cleaning may be required due to
excessive lint from carpeting, bedding materials, etc. It
is imperative that control compartments, burners and
circulating air passageways of the appliance be kept
clean.
• DO NOT put anything around the furnace that will ob-
struct the flow of combustion and ventilation air.
• DO keep the appliance area clear and free from combus-
tible material, gasoline and other flammable vapors and
liquids.
• DO examine venting system periodically and replace
damaged parts.
• DO make a periodic visual check of pilot and burner.
Clean and replace damaged parts.
• CAUTION: Pilot hole cover must be kept tightly closed
during operation.
• DO NOT use this heater if any part has been under water.
Immediately call a qualified service technician to inspect
the heater and to replace any part of the control system
and any gas control which has been under water.
THIS IS A HEATING APPLIANCE
DO NOT OPERATE THIS APPLIANCE WITHOUT FRONT PANEL INSTALLED.
Attention: The DV-25T and DV-35T direct vent wall furnaces are provided with vent kit, DV4T-59-1 for wall depths of
5" to 9". For wall depths greater than 9", refer to Accessories, Page 6. Listed below are the vent kits.
Attention: The minimum wall depth for installation of a DV-25T or DV35T MUST BE 5". If the wall depth is less than
5" you can order DV-822, refer to Accessories, Page 6 or refer to Figure 7 and Figure 8 with accompanying text, Page
10.
Vents Kits
No. Part DV4T-59-1 DV4T-812-1 DV4T-1219-1
1 Outlet Tube - Inner 13057 13057 13058
2 Gasket - Outer Collar M-177 M-177 M-177
3 Outlet Tube - Inner 13104 13104 13105
4 Inlet Tube - Inner 13062 13062 13063
5 Gasket - Inlet Collar M-178 M-178 M-178
6 Inlet Tube - Inner 13106 13106 13107
7 Inlet Tube - Outer 13064 13065 13066
8 Outlet Tube - Outer 13059 13060 13061
9 Vent Cap 13053 13053 13053
Hardware Kit 13078 13078 13078
IMPORTANT SAFETY INFORMATION
VENT KIT INFORMATION

13117-9-0907Page 4
Some people cannot smell well. Some people cannot smell the
odor of the chemical put into the gas. You must find out if you
can smell the odorant in propane. Smoking can decrease your
ability to smell. Being around an odor for a time can affect your
sensitivity or ability to detect that odor. Sometimes other odors
in the area mask the gas odor. People may not smell the gas odor
or their minds are on something else. Thinking about smelling a
gas odor can make it easier to smell.
The odorant in LP-gas is colorless, and it can fade under some
circumstances. For example, if there is an underground leak, the
movement of the gas through soil can filter the odorant. Odorants
in LP-Gas also are subject to oxidation. This fading can occur if
there is rust inside the storage tank or in iron gas pipes.
The odorant in escaped gas can adsorb or absorb onto or into walls,
masonry and other materials and fabrics in a room. That will take
some of the odorant out of the gas, reducing its odor intensity.
LP-Gas may stratify in a closed area, and the odor intensity could
vary at different levels. Since it is heavier than air, there may be
more odor at lower levels. Always be sensitive to the slightest gas
odor. If you detect any odor, treat it as a serious leak. Immediately
go into action as instructed earlier.
Propane (LP-Gas) is a flammable gas which can cause fires
and explosions. In its natural state, propane is odorless and
colorless. You may not know all the following safety precau-
tions which can protect both you and your family from an
accident. Read them carefully now, then review them point
by point with the members of your household. Someday when
there may not be a minute to lose, everyone's safety will depend
on knowing exactly what to do. If, after reading the following
information, you feel you still need more information, please
contact your gas supplier.
• Learn to recognize the odor of LP-gas. Your local LP-Gas
Dealer can give you a "Scratch and Sniff" pamphlet. Use it to
find out what the propane odor smells like. If you suspect that
your LP-Gas has a weak or abnormal odor, call your LP-Gas
Dealer.
• If you are not qualified, do not light pilot lights, perform service,
or make adjustments to appliances on the LP-Gas system. If
you are qualified, consciously think about the odor of LP-Gas
prior to and while lighting pilot lights or performing service
or making adjustments.
• Sometimes a basement or a closed-up house has a musty smell
that can cover up the LP-Gas odor. Do not try to light pilot
lights, perform service, or make adjustments in an area where
the conditions are such that you may not detect the odor if
there has been a leak of LP-Gas.
• Odor fade, due to oxidation by rust or adsorption on walls of
new cylinders and tanks, is possible. Therefore, people should
be particularly alert and careful when new tanks or cylinders
are placed in service. Odor fade can occur in new tanks, or
reinstalled old tanks, if they are filled and allowed to set too
long before refilling. Cylinders and tanks which have been
out of service for a time may develop internal rust which will
cause odor fade. If such conditions are suspected to exist, a
periodic sniff test of the gas is advisable. If you have any
question about the gas odor, call your LP-gas dealer. A
periodic sniff test of the LP-gas is a good safety measure
under any condition.
• If, at any time, you do not smell the LP-Gas odorant and you
think you should, assume you have a leak. Then take the same
immediate action recommended above for the occasion when
you do detect the odorized LP-Gas.
• If you experience a complete "gas out," (the container is under
no vapor pressure), turn the tank valve off immediately. If the
container valve is left on, the container may draw in some air
through openings such as pilot light orifices. If this occurs,
some new internal rusting could occur. If the valve is left
open, then treat the container as a new tank. Always be sure
your container is under vapor pressure by turning it off at the
container before it goes completely empty or having it refilled
before it is completely empty.
• Do not operate electric switches, light matches, use your phone.
Do not do anything that could ignite the gas.
• Get everyone out of the building, vehicle, trailer, or area. Do
that IMMEDIATELY.
• Close all gas tank or cylinder supply valves.
• LP-Gas is heavier than air and may settle in low areas such as
basements. When you have reason to suspect a gas leak, keep
out of basements and other low areas. Stay out until firefighters
declare them to be safe.
• Use your neighbor's phone and call a trained LP-Gas service
person and the fire department. Even though you may not
continue to smell gas, do not turn on the gas again. Do not
re-enter the building, vehicle, trailer, or area.
• Finally, let the service man and firefighters check for escaped
gas. Have them air out the area before you return. Properly
trained LP-Gas service people should repair the leak, then
check and relight the gas appliance for you.
SOME POINTS TO REMEMBER
NO ODOR DETECTED - ODOR FADE
LP-GAS WARNING ODOR
If a gas leak happens, you should be able to smell the gas because of the odorant put in the LP-Gas.
That's your signal to go into immediate action!
SAFETY INFORMATION FOR USERS OF LP-GAS

13117-9-0907 Page 5
REQUIREMENTS FOR MASSACHUSETTS
For all side wall horizontally vented gas fueled equipment
installed in every dwelling, building or structure used in
whole or in part for residential purposes, including those
owned or operated by the Commonwealth and where the
side wall exhaust vent termination is less than seven (7) feet
above finished grade in the area of the venting, including but
not limited to decks and porches, the following requirements
shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETEC-
TORS. At the time of installation of the side wall horizontal
vented gas fueled equipment, the installing plumber or
gasfitter shall observe that a hard wired carbon monoxide
detector with an alarm and battery back-up is installed on
the floor level where the gas equipment is to be installed.
In addition, the installing plumber or gasfitter shall observe
that a battery operated or hard wired carbon monoxide
detector with an alarm is installed on each additional
level of the dwelling, building or structure served by
the side wall horizontal vented gas fueled equipment. It
shall be the responsibility of the property owner to secure
the services of qualified licensed professionals for the
installation of hard wired carbon monoxide detectors
a. In the event that the side wall horizontally vented gas
fueled equipment is installed in a crawl space or an
attic, the hard wired carbon monoxide detector with
alarm and battery back-up may be installed on the
next adjacent floor level.
b. In the event that the requirements of this subdivision
can not be met at the time of completion of installa-
tion, the owner shall have a period of thirty (30) days
to comply with the above requirements; provided,
however, that during said thirty (30) day period, a
battery operated carbon monoxide detector with an
alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS.
Each carbon monoxide detector as required in accordance
with the above provisions shall comply with NFPA 720
and be ANSI/UL 2034 listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be
permanently mounted to the exterior of the building at a
minimum height of eight (8) feet above grade directly in
line with the exhaust vent terminal for the horizontally
vented gas fueled heating appliance or equipment. The
sign shall read, in print size no less than one-half (1/2)
inch in size, “GAS VENT DIRECTLY BELOW. KEEP
CLEAR OF ALL OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the
side wall horizontally vented gas fueled equipment shall
not approve the installation unless, upon inspection, the
inspector observes carbon monoxide detectors and signage
installed in accordance with the provisions of 248 CMR
5.08(2)(a) 1 through 4.
(b) EXEMPTIONS: The following equipment is exempt
from 248 CMR 5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled
“Equipment Not Required To Be Vented” in the
most current edition of NFPA 54 as adopted by
the Board; and
2. Product Approved side wall horizontally vented
gas fueled equipment installed in a room or
structure separate from the dwelling, building or
structure used in whole or in part for residential
purposes.
(c) MANUFACTURER REQUIREMENTS - GAS
EQUIPMENT VENTING SYSTEM PROVIDED.
When the manufacturer of Product Approved side
wall horizontally vented gas equipment provides a
venting system design or venting system components
with the equipment, the instructions provided by the
manufacturer for installation of the equipment and
the venting system shall include:
1. Detailed instructions for the installation of the
venting system design or the venting system
components; and
2. A complete parts list for the venting system design
or venting system.
(e) A copy of all installation instructions for all Product
Approved side wall horizontally vented gas fueled
equipment, all venting instructions, all parts lists for
venting instructions, and/or all venting design instruc-
tions shall remain with the appliance or equipment
at the completion of the installation.

13117-9-0907Page 6
Introduction
Always consult your local Building Department regarding
regulations, codes or ordinances which apply to the installation of
a direct vent wall furnace.
Instructions to Installer
1. Installer must leave instruction manual with owner after
installation.
2. Installer must have owner fill out and mail warranty card
supplied with furnace.
3. Installer should show owner how to start and operate furnace
and thermostat.
Warning:
Any change to this furnace or its control can be dangerous.
This is a heating appliance and any panel, door or guard
removed for servicing an appliance must be replaced prior
to operating the appliance.
General Information
This furnace is design certified in accordance with American National
Standard/CSA Standard Z21.86 and CSA 2.32 by the Canadian
Standard Association, as a Gravity Direct Vent Wall Furnace to be
installed on an outside wall according to these instructions.
Any alteration of the original design, installed other than as
shown in these instructions or use with a type of gas not shown on
the rating plate is the responsibility of the person and company
making the change.
Important
All correspondence should refer to complete Model No., Serial
No. and type of gas.
Notice: During initial firing of this unit, its paint will bake out and
smoke will occur. To prevent triggering of smoke alarms, ventilate
the room in which the unit is installed.
Installation in Residential Garages
Gas utilization equipment in residential garages shall be installed
so that all burners and burner ignition devices are located not less
than 18" (457mm) above the floor.
Such equipment shall be located, or protected, so it is not subject
to physical damage by a moving vehicle.
Qualified Installing Agency
Installation and replacement of gas piping, gas utilization equipment
or accessories and repair and servicing of equipment shall be
performed only by a qualified agency. The term "qualified agency"
means any individual, firm, corporation or company which either in
person or through a representative is engaged in and is responsible
for (a) the installation or replacement of gas piping or (b) the
connection, installation, repair or servicing of equipment, who is
experienced in such work, familiar with all precautions required
and has complied with all the requirements of the authority having
jurisdiction.
State of Massachusetts: The installation must be made by
a licensed plumber or gas fitter in the Commonwealth of
Massachusetts.
The installation must conform with local codes or, in the absence of
local codes, with the National Fuel Gas Code ANSI Z223.1/NFPA
54* Natural Gas and Propane Installation Code, CSA B149.1.
*Available from the American National Standards Institute, Inc., 11 West 42nd St.,
New York, NY 10036.
High Altitudes
For altitudes/elevations above 2,000 feet (610m), input ratings
should be reduced at the rate of 4 percent for each 1,000 (305m)
feet above sea level. Canadian High Altitudes for locations having
an elevation above mean sea level between 2,000 feet (610m) and
4,500 feet (1370m), the manifold pressure is to be decreased from
4.0" w.c. (.996kPa) to 3.2" w.c. (.796kPa) for Natural Gas and from
10.0" w.c. (2.49kPa) to 8.0" w.c. (1.992kPa) for Propane Gas.
Model DV-25T DV-35T
Input BTU/HR (KW/H) 25,000 (7.3) 35,000 (10.3)
Height 27 3/4" (705mm) 27 3/4" (705mm)
Width 37" (940mm) 37" (940mm)
Depth 11 1/2" (292mm) 11 1/2" (292mm)
Gas Inlet (Pipe) 1/2" (13mm) 1/2" (13mm)
Accessories
Blower Package DRB-1 DRB-1
*Vinyl Siding Vent Kit DV-822 DV-822
Vent Kit (8" to 12" wall depth) DV4T-812-1 DV4T-812-1
Vent Kit (12" to 19" wall depth) DV4T-1219-1 DV4T-1219-1
* Vinyl siding vent kit, DV-822 adds 3" to wall depth. You must include the three (3) additional inches for TOTAL wall depth when
ordering a vent kit.
INTRODUCTION
SPECIFICATIONS

13117-9-0907 Page 7
Locating Gas Supply
The gas line can enter the unit either through the floor or outside
wall. The gas line opening should be made at this time. Location
of the opening will be determined by the position of floor joists
and the valve and union used for servicing.
Recommended Gas Pipe Diameter
Note: Never use plastic pipe. Check to confirm whether your local
codes allow copper tubing or galvanized.
Note: Since some municipalities have additional local codes, it is
always best to consult your local authority and installation code.
The use of the following gas connectors is recommended:
— ANS Z21.24 Appliance Connectors of Corrugated Metal Tubing
and Fittings
— ANS Z21.45 Assembled Flexible Appliance Connectors of
Other Than All-Metal Construction
The above connectors may be used if acceptable by the authority
having jurisdiction. The state of Massachusetts requires that a
flexible appliance connector cannot exceed three feet in length.
GAS SUPPLY
TEE HANDLE
FLEX TUBING
NPT NIPPLE
FLARE FITTING
FLARE SHUT OFF VALVE
CLOSE NIPPLE
TEE HANDLE
NPT NIPPLE
NPT UNION
SHUT OFF VALVE
NPT GAS SUPPLY
Figure 1
Consult the current National Fuel Gas Code, ANSI Z223.1 CAN/
CGA-B149 (.1 or .2) installation code.
Installing a New Main Gas Cock
Each appliance should have its own manual gas cock.
A manual main gas cock should be located in the vicinity of
the unit. Where none exists, or where its size or location is not
adequate, contact your local authorized installer for installation
or relocation.
Compounds used on threaded joints of gas piping shall be resistant
to the action of liquefied petroleum gases. The gas lines must be
checked for leaks by the installer. This should be done with a soap
solution watching for bubbles on all exposed connections, and if
unexposed, a pressure test should be made.
Never use an exposed flame to check for leaks. Appliance must
be disconnected from piping at inlet of control valve and pipe
capped or plugged for pressure test. Never pressure test with
appliance connected; control valve will sustain damage!
A gas valve and ground joint union should be installed in the gas
line upstream of the gas control to aid in servicing. It is required by
the National Fuel Gas Code that a drip line be installed near the gas
inlet. This should consist of a vertical length of pipe tee connected
into the gas line that is capped on the bottom in which condensation
and foreign particles may collect.
Figure 2
Method of Installing a Tee Fitting Sediment Trap
Pressure Testing of the Gas Supply System
1. To check the inlet pressure to the gas valve, a 1/8" (3mm) N.P.T.
plugged tapping, accessible for test gauge connection, must be placed
immediately upstream of the gas supply connection to the appliance.
2. The appliance and its individual shutoff valve must be disconnected
from the gas supply piping system during any pressure testing of that
system at test pressures in excess of 1/2 psig (3.5 kPa).
3. The appliance must be isolated from the gas supply piping system by
closing its individual manual shutoff valve during any pressure testing
of the gas supply piping system at test pressures equal to or less than
1/2 psig (3.5 kPa).
Attention! If one of the above procedures results in pressures in excess
of 1/2 psig (14" w.c.) (3.5 kPa) on the appliance gas valve, it will result
in a hazardous condition.
Checking Manifold Pressure
Both Propane and Natural gas valves have a built-in pressure regulator
in the gas valve. Natural gas models will have a manifold pressure of
approximately 4.0" w.c. (.996kPa) at the valve outlet with the inlet pressure
to the valve from a minimum of 5.0" w.c. (1.245kPa) for the purpose of
input adjustment to a maximum of 10.5" w.c. (2.61kPa). Propane gas
models will have a manifold pressure approximately 10.0" w.c. (2.49kPa)
at the valve outlet with the inlet pressure to the valve from a minimum of
11.0" w.c. (2.739kPa) for the purpose of input adjustment to a maximum
of 13.0" w.c. (3.237kPa).
A 1/8" (3mm) N.P.T. plugged tapping, accessible for test gauge connection,
is located on the outlet side of the gas control.
Pipe Length Schedule 40 Pipe
Inside Diameter
Tubing, Type L Out-
side Diameter
Nat. L.P. Nat. L.P.
0-10 Feet
0-3 Meters
1/2"
12.7mm
3/8"
9.5mm
1/2"
12.7mm
3/8"
9.5mm
10-40 Feet
4-12 Meters
1/2"
12.7mm
1/2"
12.7mm
5/8"
15.9mm
1/2"
12.7mm
40-100 Feet
13-30 Meters
1/2"
12.7mm
1/2"
12.7mm
3/4"
19mm
1/2"
12.7mm
100-150 Feet
31-46 Meters
3/4"
19mm
1/2"
12.7mm
7/8"
22.2mm
3/4"
19mm
GAS SUPPLY

13117-9-0907Page 8
1. In selecting a location for installation, it is necessary to provide
adequate accessibility clearances for servicing and proper
installation.
2. Unit is supported by a wall bracket secured to the wall.
3. The minimum clearances from casing to combustible construction
is 48" (121cm) on top, 6" (152mm) on each side and 4" (102mm)
from the floor or from the top surface of carpeting, tile or other
floor covering and 0" (0mm) to rear wall.
4. The minimum distance from the center of the vent cap to the
nearest outside corner or obstruction is 24" (610mm).
5. The DV-25 and DV-35 minimum wall depth is 4 1/2" (114mm)
(and the maximum is 13" (330mm). The use of tubes not
supplied by the manufacturer results in unsatisfactory
performance.
The vent terminal of a direct vent appliance, with an input of
50,000 (14.6 KW) BTU per hour or less shall be located at least 9"
(229mm) from any opening through which flue gases could enter a
building. The bottom of the vent terminal and the air intake shall
be located at least 12" (305mm) above grade.
WARNING: The nearest point of the vent cap should be
a minimum horizontal distant of six (6) (1.83m) feet from
any pressure regulator. In case of regulator malfunction,
the six (6) (1.83m) feet distance will reduce the chance of
gas entering the vent cap.
Location of Furnace
Pick a location on an outside wall with a clear space of 28" (711mm)
high by 49" (124cm) wide in the room.
Locating Wall Opening
The furnace is to be located on an outside wall. Locate wall studs
so that wall opening will be located between wall studs. The wall
studs can be used for attachment of wall mounting bracket. The
wall opening required as shown in Figure 3 is a diameter of 7 1/2
inches (191mm).
A template is provided in furnace carton for positioning furnace
on the wall. Also, refer to Figure 3 for positioning the furnace on
wall and for locating gas line connection.
Figure 4 will position the furnace four inches off the floor. If it is
desired to position the furnace higher on the wall, add the difference
to the "A," "B" and "C" dimensions. Note: The vent opening is
not in the center of the furnace.
Figure 3
Figure 4
CLEARANCES
INSTALLATION INSTRUCTIONS

13117-9-0907 Page 9
Installing Wall Mounting Bracket
Locate and cut wall opening. If there is insulation above the wall open-
ing (air inlet tube) a barrier should be installed above the wall opening
(air inlet tube) to prevent insulation from coming in contact with the air
inlet tube. The barrier must not penetrate into the 7 1/2" diameter wall
opening. Place the flat surface of the wall mounting bracket toward the
wall. Insert half round flange of wall mounting bracket into and at the
top of the wall opening. Level the wall mounting bracket in the wall
opening.
On solid wall, when using wall studs for attachment of wall mounting
bracket, fasten wall mounting bracket to wall studs with two (2) 10 x 1
1/2" screws and fasten two (2) additional 10 x 1 1/2" screws through the
wall mounting bracket and into the solid wall.
On sheet rock wall, when using wall studs for attachment of wall
mounting bracket, fasten wall mounting bracket to wall studs with four
(4) 10 x 1 1/2" screws or four (4) plastic expansion anchors.
On Sheet Rock Wall Using Plastic Expansion Anchors
1. After locating mounting holes, drill four (4) 5/16" diameter holes
into the wall.
2. Insert four (4) plastic expansion anchors provided into the holes.
3. Tighten four (4) #10 x 1" screws provided into the plastic expansion
anchors (See Figure 6).
Attaching Furnace to Wall Mounting Bracket
1. Remove casing front from furnace.
2. Lay furnace face-down on a non-abrasive work surface.
3. Place collar on four inch flue tube against combustion camber back.
Align clearance holes on collar with screw holes in combustion
chamber. Attach four inch flue tube against combustion chamber
with four (4) 10 x 1/2" screws.
4. Place collar on six inch air tube against inlet air drop chute. Align
clearance holes on collar holes with screw holes in inlet air drop
chute. Attach six inch air tube to inlet air drop chute with eight (8)
10 x 1/2" screws.
5. When facing the furnace, the two (2) clearance holes for attaching
the furnace to the wall mounting bracket are located beneath the
casing top and above the combustion chamber.
6. Insert tubes through wall opening as you hang the furnace on
the wall mounting bracket by aligning two *2) tabs on the wall
mounting bracket with two (2) slots located on inner casing top.
Attention: You must support the weight of the furnace until the fur-
nace is attached to the wall mounting bracket.
7. Attach furnace to wall mounting bracket with two (2) 10 x 1/2"
screws. Attention: You will need a 5/16" socket with a 10" - 12"
extension to attach furnace to wall mounting bracket.
8. The inner casing bottom is to be fastened to the wall. On solid wall,
fasten inner casing bottom with two (2) 10 x 1 1/2" screws. On
sheet rock wall, fasten inner casing bottom with two (2) plastic ex-
pansion anchors.
Figure 5
Figure 6
INSTALLATION INSTRUCTIONS (continued)

13117-9-0907Page 10
Installing Vent Assembly
Attention: Do not attempt to cut vent tubes. When you order appropriate
vent kit for measured wall depth, the vent tubes will fit together.
1. Place provided caulking beneath the collar of the outside mounting
plate. Use additional caulking to correct uneven wall surface, such
as clapboard.
2. Insert six inch air tube on outside mounting plate INTO six inch air
tube attached to inlet air drop chute. Place four inch flue tube on
vent cap OVER four inch flue tube attached to combustion cham-
ber. Position the outside mounting plate so that six inch air tube
has a slight downward slope to the outside. The downward slope
is necessary to prevent the entry of rainwater. Attach outside
mounting plate to exterior wall with four (4) 10 x 1 1/2" screws.
3. Installation is completed.
Reassembly And Resealing Vent-Air Intake System.
When vent-air intake system is removed for service the furnace, the fol-
lowing steps will assure proper reassembly and resealing of the vent-air
intake assembly.
1. Remove old caulking beneath the collar of the outside mounting
plate. Apply new caulking beneath the collar of the outside mount-
ing plate. Use additional caulking to correct uneven wall surface,
such as clapboard.
2. Insert six inch air tube on outside mounting plate INTO six inch air
tube attached to inlet air drop chute. Position the outside mounting
plate so that the six inch air tube has a slight downward slope to the
outside. The downward slope is necessary to prevent the entry
of rainwater. Attach outside mounting plate to exterior wall with
four (4) 10 x 1 1/2" screws.
3. Place four inch flue tube on vent cap OVER four inch flue tube at-
tached to combustion chamber. Attach vent cap to outside mount-
ing plate with three (3) 10 x 1/2" screws.
4. Reassembly and resealing vent-air intake system is completed.
Installing a Vent Near a Window Ledge,
Other Type of Project or on Siding (vinyl, aluminum, etc.)
Direct vent furnaces are designed to be installed on a uniform outside
wall. When the wind comes from any angle (up, down, or from either
side), it must hit the vent cap equally over both the air inlet and the flue
outlet portions of the vent. Any wall projection, such as a door or win-
dow casing, which disturbs the wind on one side of the air inlet section
will result in back pressure on the flue section smothering the flame and
eventual pilot outage.
When the vent cap is to be installed on siding, or it appears that a pro-
jection within 6" of any side of the air inlet section could shield the air
inlet section, the entire vent should be supported away from the wall
at least the distance of the projection. 2" x 4" framing whose outside
dimensions match the overall dimensions of the mounting plate is rec-
ommended. The 2" x 4" framing protects siding from possible warpage
or discoloration. All joints can then be sealed and painted. The wall
depth plus the additional depth of the 2" x 4" framing should not exceed
a total depth of 19" for DV-25T and DV-35T (See Figure 7) (Refer to
Vent Kits page 3).
Figure 8
Vinyl siding vent kit, DV-822, is available from Empire Comfort Sys-
tems, Inc. The depth is 3", which enables the vent cap to be extended
away from siding or projections. The wall depth plus the additional 3"
depth of the vinyl siding vent cap extension should not exceed a total
depth of 19" for DV-25T and DV-35T. (See Figure 8) (Refer to Vent Kits
page 3)
Warning: When vinyl siding vent kit, DV-822 or 2" x 4" fram-
ing is added to an existing installation (furnace is installed),
do not attempt to add sections of pipe to the flue outlet tube
or air inlet tube. An air tight seal is required for both tubes.
Refer to Vent Kits, page 3 to order tubes.
Figure 7

13117-9-0907 Page 11
Millivolt wall thermostats are specially designed for use on self-generating systems. They should never be used on line or low voltage
A.C. circuits.
Figure 9
Interior Wall - The thermostat can also be installed on an inside wall
away from the furnace but in the same room.
It is important to use wire of a gauge proper for the length of the wire:
RECOMMENDED WIRE GAUGES
Maximum Length Wire Gauge
1' to 10' 18
10' to 25' 16
25' to 35' 14
Proper operation depends on a good pilot flame. The flame must cover
the top of the thermopile. Cleaning of the pilot orifice and burner may
be required due to spiders.
System Check (Figure 10)
A millivolt meter is required to check the system. Millivolt readings
should be:
• Across the thermopile terminals, 400-450 millivolts with
thermostat OFF.
• Across the thermopile terminals, 150 - 250 millivolts with thermostat
ON
• Across the thermostat wires at the valve, less than 30
millivolts with thermostat ON.
• Across the thermostat wires at the thermostat, less than 5
millivolts with thermostat ON. (Strong winds, dirty pilot and low pres-
sure will reduce readings.)
Piezo Pilot Ignitor Instructions
Depressing the button completely causes a spark to occur at the pilot.
This is a substitute for a match which requires opening the pilot hole
cover.
To light the pilot, it is important that the electrode be 1/8" (3mm) from
the thermopile. The spark must occur at the point the burner flame hits
the thermopile. The end of the electrode will be red hot with the pilot
on.
On a new installation with air in the gas line, it is suggested that a match
be used. The match will light the pilot faster than the piezo under this
condition.
Figure 10
THERMOSTAT LOCATION

13117-9-0907Page 12
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
A. This appliance has a pilot which must be lighted by
hand. When lighting the pilot, follow these instructions
exactly.
B. BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch;
do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
C. Use only your hand to push in or turn the gas control
knob. Never use tools. If the knob will not push in or turn
by hand, don't try to repair it; call a qualified service
technician. Force or attempted repair may result in a fire
or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system
and any gas control which has been under water.
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off all electric power to appliance if service is to
be performed (if applicable).
3. Remove casing front assembly.
4. Push in gas control knob slightly and turn clock-
wise to "OFF." Do not force.
5. Replace casing front assembly.
1. STOP! Read the safety information above.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance (if appli-
cable).
4. Remove casing front assembly.
5. Push in gas control knob slightly and turn clockwise
to "OFF".
NOTE: Knob cannot be turned from "PILOT" to "OFF"
unless knob is pushed in slightly. Do not force.
6. Wait ten (10) minutes to clear out any gas. Then smell
for gas, including near the floor. If you smell gas, STOP!
Follow "B" in the safety information above. If you don't
smell gas, go to the next step.
7. Remove the pilot access cover located on the combustion
chamber.
8. Find pilot - follow metal tube
from gas control. The pilot is
behind the pilot access cover.
9. Turn knob on gas control counterclockwise to
"PILOT."
10. Push in control knob all the way and hold in. Immediately
light the pilot with the Piezo Pilot Ignitor or a match.
Continue to hold the control knob in for about one (1)
minute after the pilot is lit. Release knob, and it will pop
back up. Pilot should remain lit. If it goes out, repeat
steps 5 through 10.
• If knob does not pop up when released, stop and
immediately call your service technician or gas sup-
plier.
• If the pilot will not stay lit after several tries, turn
the gas control knob to "OFF" and call your service
technician or gas supplier.
11. Replace pilot access cover.
12. Turn gas control knob counterclockwise to
"ON."
13. Replace casing front assembly.
14. Turn on all electric power to the appliance (if appli-
cable).
15. Set thermostat to desired setting.
16. CAUTION: Pilot access cover must be kept tightly closed
during operation.
LIGHTING INSTRUCTIONS
LIGHTING INSTRUCTIONS

13117-9-0907 Page 13
The correct flame will be almost horizontal, blue and will extend
past the thermopile 1/4" (6mm). The flame will surround the
thermopile just below the tip.
On propane (LP-gas) slight yellow might occur where the pilot
flame and burner flame meet.
Natural gas pilots require adjusting when the inlet pressure is
above 5" w.c. (1.25kPa) Turn adjustment screw clockwise to
reduce flame.
Propane (LP-gas) will not require adjusting.
There will be a short blue inner flame with a much larger lighter
blue secondary flame. The burner flame may have a yellow tip when
hot. See the burner drawing showing the approximate heights of
each part of the flame. Dust in the combustion air will produce an
orange or red flame. Do not mistake the orange or red flame for
an improper yellow flame. After use, cleaning may be required
for the proper flame.
Figure 12
Primary Air Adjustment (Figure 13)
An air adjustment bolt is located on the chamber support bottom.
The four inch (102mm) clearance between the furnace and the floor
allows access to the air adjustment bolt. The air adjustment bolt is
above the rectangular opening on the inner casing bottom.
On Propane gas, if a whistling noise (resonation) occurs, screw
air adjustment bolt into the chamber support in order to reduce the
amount of primary air. If the whistling noise (resonation) is not
eliminated when the air adjustment bolt is screwed into the chamber
support this may indicate the air adjustment bolt is misaligned. Grasp
air adjustment bolt and pivot (push) air adjustment bolt away from
yourself. Observe the main burner flame as you push air adjustment
bolt and when the main burner flame begins to develop a yellow
flame, you should stop pushing on the air adjustment bolt. Screw
air adjustment bolt out of the chamber support until the yellow
flame on the main burner is eliminated. The air adjustment bolt
should now be properly aligned. The reduction in primary air
will soften the main burner flame and will eliminate the whistling
noise (resonation).
On Propane or Natural gas, if a yellow flame occurs, screw air
adjustment bolt out of the chamber support but do not completely
remove air adjustment bolt from chamber support. The repositioning
of the air adjustment bolt will increase the amount of primary air.
The increase in primary air will sharpen the main burner flame and
will eliminate the yellow flame.
Figure 13
Figure 11
PILOT FLAME CHARACTERISTICS
MAIN BURNER FLAME CHARACTERISTICS

13117-9-0907Page 14
1. Lit match goes out as it enters lighter port.
a. Certain wind conditions will blow out match. Ignite
match, and as it flares, thrust match through opening.
b. Open nearby door or window and relight pilot.
2. Pilot flames but goes out when knob is released.
a. See Lighting Instructions. Relight Pilot.
b. Relight the pilot and hold knob down longer and harder.
Close lighter hole cover just after igniting. Check for a
good pilot flame.
c. Defective thermopile or defective magnet in safety section
of valve. Replace.
3. Yellow pilot flame
a. Obstruction at pilot orifice.
b. Clean pilot orifice.
4. Pilot and main burner go out during normal operation.
a. Check millivolts.
b. Check for proper size of pilot flame.
c. Check for defective or weak thermopile.
d. Check input, reduce as needed.
e. Cover on pilot lighter hole must be air tight.
f. Check for tight fit of air and flue tubes at both ends of vent
assembly. No obstruction around vent that would prevent
the wind from hitting all of the vent equally.
5. Thermostat does not turn the main burner on.
a. Check wiring.
b. Check all millivolt readings.
c. Check for spider in main burner orifice.
6. Yellow main burner flame soot on the vent cap.
a. See Page 13, "Primary Air Adjustment".
b. Remove main burner to check for obstructions in throat and
ports.
c. Install new main burner orifice and pilot orifice. Refer to
Parts List, page 15.
7. On Propane gas, if a whistling noise (resonation) occurs.
a. See Page 13, "Primary Air Adjustment".
b. Reduce manifold pressure.
c. Size main burner orifice with a drill bit. For DV-25 use #54
drill bit. For DV-35 use #50 drill bit.
Removing Main Burner
1. Disconnect the thermopile and pilot supply line at the pilot
burner.
2. Remove the burner compartment cover.
3. Remove orifice shield.
4. Remove bolt on each side of burner and lift out.
Cleaning Main Burner
The main burner may be cleaned by forcing water into the ports
and the throat of the burner. The main burner should be blown dry
or heated to remove water from main burner.
Removing Main Burner Orifice
1. Open the brass union located after the gas valve.
2. Loosen valve bracket.
3. Remove the 3/8" (10mm) manifold pipe that is attached to the
union elbow until the manifold pipe is free.
4. The main burner orifice is at the end of the manifold pipe.
Removing Pilot Orifice
1. Disconnect the pilot supply line at the pilot burner.
2. Remove pilot orifice from pilot burner. It may be necessary to
tap on pilot burner in order to remove the pilot orifice.
Cleaning Pilot Orifice
After use, cleaning of the pilot burner may be required for the proper
flame. Also, cleaning of the pilot burner may be required due to
spiders (spider webs). The pilot orifice can be cleaned with high
pressure air or by placing under running water. Pilot orifice must
be dry before replacement. Use a pipe cleaner to clean inside the
pilot after the pilot orifice has been removed.
Cleaning Combustion Chamber
When the main burner and vent cap are removed, all internal
areas of the combustion chamber are accessible for cleaning with
a vacuum hose.
MAINTENANCE
TROUBLESHOOTING

13117-9-0907 Page 15
PLEASE NOTE: When ordering parts, it is very important that part number and description of part coincide.
USE ONLY MANUFACTURER'S REPLACEMENT PARTS. USE OF ANY OTHER PARTS COULD CAUSE INJURY OR DEATH.
Parts can be ordered only through your service person or dealer. For best results, the service person or dealer should order parts through
the distributor. Parts can be shipped directly to the service person/dealer.
All parts listed in the Parts List have a Part Number. When ordering parts, first obtain the Model Number from the name plate on your
equipment. Then determine the Part Number (not the Index Number) and the Description of each part from the following appropriate
illustration and list. Be sure to give all this information.
Furnace Model Number Part Description
Furnace Serial Number Part Number
Type of Gas (Propane or Natural)
Do not order bolts, screws, washers or nuts. They are standard hardware items and can be purchased at any local hardware store.
Shipments contingent upon strikes, fires and all causes beyond our control.
Empire Comfort Systems, Inc. Nine Eighteen Freeburg Ave. Belleville, IL 62222-0529
Index
No.
Part
Number
Description Index
No.
Part Number Description
1 13057 Outlet Tube - Inner Assembly (Includes 2 & 3) 23 R-942 Thermopile
2 M-177 Gasket - Outer Collar 24 DV-1004 Pilot Tubing
3 13104 Outlet Tube - Inner Welded Assembly 25 RH-238 Burner Door
4 13062 Inlet Tube - Inner Assembly (Includes 5 & 6) 26 DV-778 Gasket - Burner Door
5 M-178 Gasket - Inlet Collar 27 M-151-B Gasket - Pilot Burner
6 13106 Inlet Tube - inner Welded Assembly 28 DV-994 Pilot Shield
7 13064 Inlet Tube - Outer Assembly 29 R-2224 Pilot Burner with Orifice (Nat)
8 13059 Outlet Tube - Outer Assembly 29 R-2223 Pilot Burner with Orifice (LP)
9 13053 Vent Cap Welded Assembly 30 DV-772 Electrode and Wire Assembly
10 13051 Wall Mounting Bracket Assembly 31 DV-913 Casing Front (USA)
11 13089 Inlet Air Drop Chute Assembly 31 15700 Casing Front (Canada)
12 DV-762 & DV 763 Gasket - Air Drop Chute (2 Each Required) 32 P-86-43 Main Burner Orifice (DV-25T Nat)
13 DV-951 Casing Top 32 P-86-54 Main Burner Orifice (DV-25T LP)
14 DV-901 Heat Shield 32 P-86-38 Main Burner Orifice (DV-35T Nat)
15 13278 Inner Casing Assembly (USA) 32 P-86-50 Main Burner Orifice (DV-35T LP)
15 15701 Inner Casing Assembly (Canada) 33 P-190 Manifold
16 RH-705 Casing Side (2 Required) 34 R-191 Manifold Union Assembly
17 M-176 Gasket - Flue Outlet Support 35 R-5600 Gas Valve (Nat) 7000 MVRLC
18 13094 Combustion Chamber (DV-25T) 35 R-5601 Gas Valve (LP) 7000 MVRLC
18 13091 Combustion Chamber (DV-35T) 36 DV-1003 Valve Bracket
19 M-155 Gasket - Lighting Hole 37 DV-764 & DV-765 Gasket - Chamber Support (2 Each Required)
20 DV-781 Lighting Hole Cover Assembly with Clear Mica 38 DV-908 Valve Shield
21 DV-064 Cover Plate 39 R-854 Piezo Ignitor
22 DV-988 Burner (DV-25T) Not Shown R-1081 Pilot Orifice (Nat)
22 DV-990 Burner (DV-35T) Not Shown R-1089 Pilot Orifice (LP)
Not Shown R-5788 Wall Thermostat - Millivolt
Not Shown 13271 Wall Thermostat Bracket
Not Shown DV-885 Hardware Package
HOW TO ORDER REPAIR PARTS
PARTS LIST

13117-9-0907Page 16
PARTS VIEW

13117-9-0907 Page 17
OPTIONAL BLOWER DRB-1
Installing Optional DRB-1 Blower
1. Remove casing from front and heat shield
2. When facing appliance, insert blower assembly into the left
section of the casing (adjacent to the combustion chamber).
3. Route cord set through opening in casing in bottom. The opening
in casing bottom is located beneath gas control.
4. Align the two (2) screw holes on the inner side panel and the
two (2) screw holes on casing back with the four (4) clearance
holes on the blower assembly. Attach blower assembly to the
casing back and inner side panel with four (4) 10 x 1/2" screws
provided. The blower assembly must be attached first to the
casing back and then to the casing side panel.
5. Replace heat shield and casing front.
Attention: Wiring harness on blower is factory assembled and
installed. If wiring harness becomes disassembled use the following
steps to reassemble the wiring harness.
1. Attach (1) pin terminal from black (hot) wire, smooth insulation
on cord set to (1) socket terminal on fan control assembly.
2. Attach (1) pin terminal from black (neutral) wire, ribbed
insulation on cord set to (1) socket terminal from white (neutral)
wire on motor.
3. Attach (1) pin terminal on fan control assembly to (1) socket
terminal from black (hot) wire on motor.
4. Attach green ground wire beneath one of the #10 x 1/2" (13mm)
screws on the blower housing.
Fan Control
The automatic fan control is located in the switch box. The switch
box is attached to the front of the blower assembly. The switch
box is adjacent to the combustion chamber. The fan control is a
non-adjustable automatic type. The fan control will require between
5 and 10 minutes of main burner operation before the fan control
"closes" and activates the blower. The blower will continue to run
between 5 and 10 minutes after the main burner shuts off, before
the fan control "opens" and deactivates the blower.
Wiring
The appliance, when installed, must be electrically grounded in
accordance with local codes or, in the absence of local codes, with
the National Electrical Code, ANSI/NFPA 70 or Canadian Electrical
Code, CSA C22.1, if an external electrical source is utilized. This
appliance is equipped with a three-prong [grounding] plug for
your protection against shock hazard and should be plugged
directly into a properly grounded three-prong receptacle. Do
not cut or remove the grounding prong from this plug. For an
ungrounded receptacle, an adapter, which has two prongs and a
wire for grounding, can be purchased, plugged into the ungrounded
receptacle and its wire connected to the receptacle mounting screws.
With this wire completing the ground, the appliance cord plug can
be plugged into the adapter and be electrically grounded.
CAUTION: Label all wires prior to disconnection when
servicing controls. Wiring errors can cause improper
and dangerous operation. Verify proper operation after
servicing.
WARNING:
Unplugging of blower accessory will not stop the heater
from cycling. To shut heater off: Turn temperature dial
or thermostat to lowest setting. Turn knob on gas control
to "OFF", depressing slightly. Do not force.
OPTIONAL BLOWER INSTALLATION INSTRUCTIONS

13117-9-0907Page 18
Cleaning
The blower wheel will collect lint and could require cleaning once
a year. If the air output decreases or the noise level increases,
it indicates a dirty wheel. Complete removal of the wheel and
scrubbing it with a brush under flowing water is recommended.
Oiling
The blower motor has an oil hole located on each end of the motor.
Use #20 motor oil only. It is best to oil the motor several times
during the heating season using 2 or 3 drops each time. If the motor
fails to start and hums, it could be a tight bearing due to lack of
oil. This may be corrected by pouring kerosene in the oil holes,
allowing to stand for a few hours and then oiling properly.
PARTS LIST
Index
No.
Part
No.
Description
1 R-2090 Motor
2 632016 Motor Cushion
3 RH-036 Motor Support
4 642030 Blower Wheel
5 RH-710 Blower Housing Assembly
6 9120106 Fan Control Switch
7 872087 Heyco Bushing
8 DV-806 Switch Box
9 DV-807 Switch Box Cover
10 R-2091 Wire Assembly 19" (483mm)
11 8720161 Heyco Bushing
12 R-2099 Cord Set 72" (1.83m)
OPTIONAL BLOWER INSTALLATION INSTRUCTIONS (continued)

13117-9-0907 Page 19
SERVICE NOTES

13117-9-0907Page 20
Empire Comfort Systems, Inc.
918 Freeburg Ave. Belleville, IL 62220
PH: 618-233-7420 or 800-851-3153
FAX: [phone] or 800-443-8648
[email protected]
www.empirecomfort.com