COZY DVCF403C-H User manual

DIRECTVENT
COUNTERFLOW
WALLFURNACE
INSTALLATION AND
OPERATING INSTRUCTIONS
P/N 72900 - REV. 04/2013
WARNING: If theinformationinthis manualis notfollowed exactly,a
fireor explosionmayresultcausingproperty damage,personal injury or
loss of life.
- Donot storeoruse gasolineor otherflammable vaporsandliquids
inthe vicinityof thisor anyother appliance.
- WHATTODOIFYOUSMELLGAS:
- Donot tryto lightany appliance.
- Donot touchany electricalswitch;do notuse anyphone inyour
building.
- Immediatelycall yourgassupplierfromaneighbor’s phone. Followthe
gassupplier’sinstructions.
- Ifyou cannotreach yourgassupplier,call thefiredepartment.
- INSTALLATIONAND SERVICEMUSTBE PERFORMEDBYA
QUALIFIEDINSTALLER,SERVICEAGENCYORTHEGAS
SUPPLIER.
RR
MODEL NUMBERS
NAT. GAS DVCF403C-H DVCF553C-H
L.P. GAS DVCF404C-H DVCF554C-H
24 VOLT SYSTEM WITH LOW-BTU PILOT MODEL NUMBERS
NAT. GAS DVCF407C-H DVCF557C-H
L.P. GAS DVCF408C-H DVCF558C-H
24 VOLT SYSTEM W/INTERMITTENT IGNITION (IID)
The coating selected to provide longer life to
theheat exchanger maysmoke slightlyupon
initialfiring. Please provideadequate
ventilationif thisoccurs.
INSTALLER: Leavethismanualwith the
appliance.
CONSUMER: Retainthismanual for
futurereference.
WARNING: Operation of this furnace without the properly installed, furnished vent system and vent cap
could result in Carbon Monoxide (CO) poisoning and possible death. For yoursafety, this furnace and the
vent system should be inspected at least annually by a qualified service technician.
Installation,maintenance,service,troubleshootingandrepairsmustbeperformed by aqualifiedservice
agency. Mr./Mrs. Homeowner, DO NOTattemptanyof theseproceduresyourself as thiscouldexpose you
topropertydamage,personalinjuryorlossoflifeandwillinvalidateall warranties.
Thisunit isfor residentialuse onlyandisnotapprovedforinstallation ingreenhouses, orenviron-
mentsinvolving dusty,wet, corrosive,orexplosiveconditions. Such conditionswill invalidatethe
warrantyandmay createunsafeconditions.

INTRODUCTION
Readthese installation andoperating instructions carefullybefore you installor attempt tousethis DirectVent
Counterflow Wall Furnace. If you do not understand any part of the instructions, consult local authorities, a
qualifiedinstaller,servicetechnicianorthe gas supplier. FAILURETOREADORUNDERSTANDTHESE
INSTRUCTIONSCAN RESULTINMALFUNCTION, INEFFICIENTOPERATION,PROPERTY
DAMAGE, SERIOUS INJURYOR DEATH.
SPECIFICATIONSANDDIMENSIONS
YourDirectVentCounterflowWallFurnaceisshippedintwocartons. Onecartoncontainsthefurnace,thermostat,
thermostat wire and insulated staples. The second carton will have the vent tube, air intake tube and vent cap
assembly. After the furnace has been removed from the carton check the rating plate to verify that the model
numberiscorrect and that thewallfurnaceis equipped withthetypegasyou intend touse.
Page 2
Model Type Type Btu/Hr. Gas Blower Approx.
Number Control Gas Input Inlet Finished Dimensions Speed Amps CFM Ship. Wt.
24 VOLTSYSTEMWITH LOW-BTU STANDINGPILOT
DVCF403C-H 24Volt Nat. 40,000 ½” 14-5/16”Wx78-5/8”Hx11-3/4”D 1 1.95 320 130Lbs.
DVCF404C-H 24Volt L.P. 40,000 ½” 14-5/16”Wx78-5/8”Hx11-3/4”D 1 1.95 320 130Lbs.
DVCF553C-H 24Volt Nat. 55,000 ½” 14-5/16”Wx87-5/16”Hx11-3/4”D 2 3.05 440 144Lbs.
DVCF554C-H 24Volt L.P. 55,000 ½” 14-5/16”Wx87-5/16”Hx11-3/4”D 2 3.05 440 144Lbs.
24VOLTSYSTEMWITHINTERMITTENTIGNITION(I.I.D.)
DVCF407C-H 24Volt Nat. 40,000 ½” 14-5/16”Wx78-5/8”Hx11-3/4”D 1 2.2 320 130Lbs.
DVCF408C-H 24Volt L.P. 40,000 ½” 14-5/16”Wx78-5/8”Hx11-3/4”D 1 2.25 320 130Lbs.
DVCF557C-H 24Volt Nat. 55,000 ½” 14-5/16”Wx87-5/16”Hx11-3/4”D 2 3.3 440 144Lbs.
DVCF558C-H 24Volt L.P. 55,000 ½” 14-5/16”Wx87-5/16”Hx11-3/4”D 2 3.35 440 144Lbs.
CONTENTS
Introduction………………………………. 2
Specifications and Dimensions…………… 2
Safety Rules………………………………. 3
Clearances………………………………… 4, 5
Location…………………………………… 6
Installation………………………………… 6
Operation…………………………………. 7
LightingInstructions……………………… 8, 9
PilotAdjustment………………………….. 10
RemovingBurner………………………. 10
ProperBurner Flame…………………… 10
OptionalSideDischargeKit…………… 14
TerminalBlockWiring………………… 13
ManualReset…………………………… 13
MaintenanceInstructions………………. 13
TroubleShooting……………………….. 19,21
PartsDrawing…………………………... 16
Parts List………………………………... 17,18
Warranty………………………………… 23
The State of Massachusetts requires that installation and service of a gas appliance be
performedby aplumber orgas fitterlicensed intheCommonwealthofMassachusetts.
Theappliancemay beinstalledinanaftermarketpermanentlylocated,manufactured(mobile)
home,where not prohibitedby localcodes. Thisappliance isonly for usewith thetypeof gas
indicatedon the ratingplate. This appliance isnot convertible foruse withothergases, unlessa
certified kit is used.

SAFETYRULES
1. This appliance mustbeinstalledin accordance withlocalcodes,if any; ifnot,followthe National FuelGas
Code,ANSI Z223.1/NFPA54 or the Natural Gas and Propane Installation Code, CSA-B149.1.
2. Follow allapplicablelocalcodes and ordinances. Iftherearenone, follow thelatesteditionof the National
Fuel Gas Code,ANSI.Z223.1. Acopy may be obtained from American GasAssociation, 1515 Wilson
Blvd.,Arlington,Virginia22209,ortheNational FireProtectionAssociation, BatterymarchPark,Quincy,
MA.02269. InCanada,seethecurrent CAN1-B149installationcode,availablefromInternationalApproval
Services,55 ScarsdaleRoad,Don Mills,Ontario, Canada M3B-2R3.
3. Theappliance,wheninstalled,mustbeelectricallygroundedinaccordancewithlocalcodesor,intheabsence
oflocalcodes,withthelatesteditionofNationalElectricalCode,ANSI/NFPA70. In Canada, see the current
CSAC22.2CanadianElectricalCode,availablefromInternationalApprovalServices,178RexdaleBoulevard,
Etobicoke,Ontario, CanadaM9W 1R3.
4. Donotinstallthisfurnaceinarecreationalvehicleortrailer.
5. Do notoperatethisfurnaceunless it isconnectedtothesupplied vent systemwithventcapinplace. Do not
attempttoextendventpipes. 12inchesismaximumlength.
6. Neveruseamatch, candle, flameorothersourceofignition to check forgasleaks. Useonlysoapywater or
liquiddetergent.
7. Before cleaning orservicing,turnoffthegasandallowfurnacetocool.
8. Donotoperatefurnacewithoutgrillesandfrontpanelin place.
9. Duetohightemperatures,locatefurnaceout of traffic and awayfromfurnitureanddrapes.
10. Childrenand adults shouldbealerted to thehazardof high surfacetemperatureand should bekeptaway to
avoidburnsorclothingignition.
11. Youngchildrenshouldbecarefullysupervisedwhentheyareinthesameroomwiththefurnace.
12. Donotplaceclothingorotherflammablematerialonor near the furnace.
13. Installationand repairshould bedone bya qualifiedservice technician. The furnace should be inspected
beforeuseandatleast annuallybyaprofessionalservicetechnician. Morefrequentcleaningmayberequired
duetoexcessivelintfromcarpeting,beddingmaterial,etc. Itisimperativethatcontrolcompartments,burners,
andcirculatingairpassagewaysof the furnace bekeptclean.
14. Donotputanythingaroundthefurnaceorventcapthatwillobstructtheflowofcombustionandventilationair.
15. Wheninstallingthefurnaceallowadequateaccessibilityclearancesforservicingandproperoperation. (See
Figure 1 – Page 5).
16. Thewallfurnaceshouldbe located nearthecenterof the areatobeheated for optimalheatdistribution.
Ifthewallfurnaceisinstalleddirectlyoncarpeting,tileoranycombustiblematerialotherthanwoodflooring,
thewallfurnaceshallbeinstalledonametal plate or woodpanelsecuredtothefloor,extendingthefullwidth
anddepth of thewall furnace. If aside register kitis to beinstalled, see Page14.
17. Do notuse thisheater if any part hasbeen underwater. Immediately call a qualified servicetechnician to
inspectthe heater andtoreplace any partofthe control systemwhichhas been underwater.
18. Foryoursafety, thisfurnaceisequipped with amanualresetauxiliary limit switch. Incase of failurebythe
primarylimitswitch,this switchwillshutthevalvedowncompletelybefore unsafetemperaturesarereached.
Afteracooldown period, switchmustbemanuallyreset. Ifoutages persist, callaqualifiedserviceperson.
19. Sidedischargekitboots must notexceed10 inches.
20. Locatetheauxiliarylimitswitchandpushintheredresetbutton. Thiswillresettheswitchincaseitaccidentally
openedduringshipping.
Page 3

VentTerminal AirSupplyInlet Areawhereterminalisnotpermitted
VENTTERMINALCLEARANCES
Page 4
REFERENCE LETTER TO
DRAWING CANADIAN INSTALLATIONS¹ U.S. INSTALLATIONS²
A= Clearanceabove grade, veranda,
porch, deck, or balcony 12 Inches (30 cm) 12 Inches (30 cm)
B= Clearance to window or door that
may be opened 12 Inches (30 cm) DVCF40__ 9 Inches (23 cm) DVCF55__ 12 Inches (30 cm)
C= Clearance topermanently closed
window 12 Inches (30 cm) DVCF40__ 9 Inches (23 cm) DVCF55__ 12 Inches (30 cm)
D= Vertical clearance to ventilated
soffit located above theterminal within
a horizontal distance of 2 Feet (61 cm)
from the center line of the terminal
18 Inches (46 cm) 18 Inches (46 cm)
E= Clearance to unventilated soffit 24 Inches (61 cm) 24 Inches (61 cm)
F= Clearance to outside corner 12 Inches (30 cm) 12 Inches (30 cm)
G= Clearance to inside corner 12 Inches (30 cm) 12 Inches (30 cm)
H= Clearance to each side of center
line extended above meter/ regulator
assembly
3 Feet (91 cm) within a height
15 Feet (4.5m) above the meter/regulator
assembly
Clearance in accordancewith local
installation codes and the requirements
of the gas supplier
I= Clearance to service regulator vent
outlet 3 Feet (91 cm) Clearance in accordancewith local installation codes and the
requirements of thegas supplier
J= Clearance to nonmechanical air
supply inlet to building or the
combustion air inlet to any other
appliance
12 Inches (30 cm) DVCF40__ 9 Inches (23 cm)
DVCF55__ 12 Inches (30 cm)
K= Clearance to amechanical air
supply inlet 6 Feet (1.83 m) 3 Feet (91 cm) above if within 10 Feet (3 m) horizontally
L= Clearance above paved sidewalk or
paved driveway locatedon public
property
7 Feet (2.13m) Avent shallnot terminate
directly above a sidewalk or paved
driveway that is located between two
single familydwellings and servesboth
dwellings.
Clearance inaccordancewith
local installation codes and the
requirements of thegas supplier.
M= Clearance under veranda, porch,
deck, or balcony 12Inches (30cm)permittedonlyif veranda, porch, deck, or balcony is fully
open on a minimum of two sides.
Clearance inaccordancewith
local installation codes and the
requirements of thegas supplier.
¹ In accordance with thecurrent CSA-B149.1Natural Gasand Propane Installation Code
² In accordance with thecurrent ANSI Z223.1 / NFPA 54 National Fuel Gas Code

CLEARANCES
1. Theminimum clearance toaside wallis4”. (See Fig. 1). NOTE:
The unit may be recessed and rest directly against side studs and
the inside surface of the rear wall.
2. The minimum clearance to the ceiling is 4”. (See Figure 1).
3. The minimum clearance to the floor is 0”. (See Figure 1).
4. The minimum clearance from the side of the vent cap to any
protruding obstructions, or corners is 12”. (See Figure 2b).
5. The minimumclearance fromany windowto theside ofthe vent
cap is 9” for DVCF403, 404, 407 and 408C (See Figure 2), and
12” for DVCF553, 554, 557, and 558C (See Figure 2b).
6. The minimumclearance fromany overhangingprojection is24”
to top of vent cap (See Figure 2).
7. RESIDENTIAL GARAGE INSTALLATION: Gas utilization
equipment in residential garages shall be installed so that all
burners and burner ignition devices are located not less than 18
inches(46 cm)above the floor. Such equipmentshall belocated,
or protected so it is not subject to damage by a moving vehicle.
Use care in selecting a good location within the garage. DO
NOT locate the appliance where heated air will be directed onto
anearbyparkedvehicle. Paint may discolor orrubbermayharden
and crack. DO NOT allow heated discharge air to blow directly
onto open or closed containers of paint, gasoline or other liquids
havingflammable vapors.
Ceiling
4”Minimum
SIDEWALL
4”Minimum
FLOOR0”
FIGURE1
24”Min.
12”
Min. 12”
Min.
12”Min.
FIGURE 2B / DVCF553C, 554C, 557C, AND 558C
24”Min.
12”
Min.
12”Min.
9”
Min.
FIGURE 2 / DVCF403C, 404C, 407C, AND 408C
Page 5

LOCATIONS
1. This furnacemust beinstalledon anoutside wall andvented
to the outside. If possible, this wall should be on the side of
thehouse thatreceivesthe leastamountof windsincestrong
gusting winds could cause pilot outage.
2. For most efficient performance, locate furnace as centrally
as possible in the area to be heated.
3. The furnace can be installed flush against a wall or recessed
up to 10” maximum. For proper combustion, make sure
unit is level front to back and side-to-side.
4. Donotinstallthe furnace inacloset, alcove orsmallhallway
where the furnace could be isolated from the space to be
heated by closing a door.
5. Be sure the vent cap will have the proper clearances (See
Figure 2).
6. Check inside the wall to make sure there are no obstacles
such as water pipes, electric wiring, etc. which could
interfere with the installation of the furnace or vent tubes.
7. Be sure to maintain adequate accessibility clearances for
servicing and proper operation.
8. If the furnace is installed in a basement, a 12” clearance
must be maintained between ground level and the bottom
of the vent cap. Do not install furnace where vent cap will
terminate in a window well or any other opening below
ground level.
INSTALLATION
ELECTRICAL ROUGH-IN
For convenience, this furnace is equipped with a three-prong
power cord located on the top left of heater. The 115V wiring
should be brought in on the left side terminating in a receptacle
box (not provided). Consult local codes or ordinances. (For
Amps, see Page 2/Specifications and Dimensions).
ROUGH-IN GAS SUPPLY
Install a 1/2 inch diameter gas supply line. The gas line can
enter the cabinet through the right side or bottom (See Figure
3). The gas line must have an individual manual shut off valve.
Also, you must install a drip leg and provide a 1/8” N.P.T.
plugged tapping, accessible for test gauge connection,
immediately upstream of the gas supply connection to the
furnace (See Figure 4).
The furnace and its individual shut off valve must be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess of ½
psig(3.5kPa). The furnacemust be isolatedfrom the gassupply
piping system by closing its individual manual shut off valve
during any pressure testing of the gas supply piping system at
test pressures equal to or less than ½ psig (3.5kPa).
Page 6 FIGURE 5
9-1/4
DIA.
WALL
STUDS
DVCF40 - 59”
DVCF55 - 68-1/2”
FINISHED
FLOOR
FIGURE 3
3-1/2”
2-5/8”
1-1/2 OA
Gas
Supply
Line
Drip
Leg
Manual Cut OffValve
1/8 N.P.T.
Pressure Tap
FIGURE4
To heatergascontrolvalve

LOCATE VENT OPENING
After the location of the heater has been determined, the
opening for the vent pipe should be cut. If the heater is to be
recessed, cut out opening for heater between studs on the
interior wall and cut out the floor plate between the studs, so
heater will set flat on floor as all dimensions are given from
a finished floor. The height of the cut out for a 40,000 BTU
model is 78-5/8”, for the 55,000 models the cut out height is
87-5/16”. NOTE: This dimension may be increased to allow
moreroom for installation and making the wiringconnection,
then refinished.
Next, cut out a 9-1/4” opening in exterior wall for the vent
tubes to pass through. The center of opening for the 40,000
BTU furnace is 59”, the center for opening for 55,000 BTU
furnace is 68-1/2”. See Figure 5, on Page 6.
If the heater is to be surfaced mounted, cut out 9-1/4” opening
through the interior and exterior wall. The center of cut out
willbe59”for40,000BTUand68-1/2”for55,000BTUmodels.
Be sure both cutouts are level with each other.
INSTALLING THE FURNACE
Thevent systemsupplied withthis furnacewill accommodate
walls ¾” (when recessed) up to 12” thick. Use only the
exhaust tube, air intake tube and vent cap supplied with
heater. Do not attempt to lengthen the exhaust or air intake
tubes, this could cause an imbalance in the heater resulting
in poor performance and pilot outage (See Figure 6).
Measure exact distance “X” between surface on which back
of cabinet will rest (inside of recessed cavity or face of wall
when freestanding) and the outside wall surface (see Figure
6).
Inlet Air Tube “A” – Measuring from gasketed surface,
mark and cut pipe same as dimension “X”. Remove any
burrs.
Vent Exhaust Tube “B” – Measuring from gasketed
surface, mark and cut pipe 1-3/4” greater than dimension
“X”. Remove any burrs.
Fasten vent exhaust tube “B” to heat exchanger collar and
Inlet Air Tube “A” to flange on back of furnace using 16 #
3/8 screws (“C”) provided. Be sure gaskets are in place and
not damaged. Anytime the vent pipes are removed check
and replace gaskets (if necessary). Failure to replace missing
or damaged gaskets may expose homeowner to life
threatening conditions.
Secure furnace in place using 2 holes provided in bottom of
casing. NOTE: Make sure both tubes are centered in cut
out. Slide the vent cap onto the pipes extending from the
back of the furnace. A rotating or twisting motion will ease
this installation. Secure vent cap and vent cap spacer plate
to wall causing the vent tubes to have a slight downward
pitch. This will prevent water from entering. Anchors (not
provided) may be required. Caulk around vent cap spacer
plate with caulking provided. NOTE: Some framing may
be necessary to provide a flat surface against the vent cap
spacer plate and to prevent rain from entering the wall
opening.
GASCONNECTION
Make the gas connection between the manual shut off valve
and the furnace gas control valve with approved ½”
connectors. Compounds used on threaded joints of gas
piping shall be approved for use with L.P. gas. The gas
lines must be checked for leaks by the installer with soapy
water or liquid detergent, never use an open flame. If
connections are not exposed, a pressure test must be run.
Be sure to disconnect the gas supply line from the appliance
valve before pressure testing. The manifold pressure is
pre-set at the factory and should be 3.5” w.c. for Natural
Gas and 10” w.c. for L.P. Gas. The minimum inlet pressure
for Natural Gas is 4.5” w.c. and 11” w.c. for L.P. Gas, “for
purpose of input adjustment”. The maximum inlet pressure
should never exceed 7.0” w.c. on Natural Gas or 14” w.c.
on L.P. Gas.
THERMOSTAT INSTALLATION
Follow the instructions included with the thermostat. Select
alocation for the thermostat on an inside wall approximately
5 feet above the floor where it won’t be affected by heat or
cold sources such as direct sunlight, televisions, fireplaces,
hidden hot or cold water pipes, drafts, etc., and a minimum
of 4’from the heater. The thermostat must never be placed
in an adjacent room. Connect thermostat wires to
thermostat and mount to wall. Run wire to furnace and
make connections to thermostat wires coming out of top of
furnace. Use insulated staples (provided) to secure wire to
wall.
OPERATION
This heater is equipped with a slow opening gas control. On
a call for heat the gas valve does not snap-open to full
manifold pressure, but opens with a gradual increase to
normal manifold pressure. The time lapse from the call for
heat to normal operating pressure is two to five seconds.
The slow open feature assures a safe, less noisy ignition.
After the heat exchanger has warmed sufficiently, the fan
will automatically come on to efficiently transfer the heat
into the room. NOTE: The 40,000 BTU models have a one
speed and the 55,000 BTU models have a two-speed
automatic fan.
Vent
Cap Vent Cap
Spacer
Plate
Heat
Exchanger
Collar
FIGURE6
Page 7

LIGHTING INSTRUCTIONS: DVCF403C-H/404C-H, DVCF553C-H/554C-H
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 instruc-
tions exactly.
B. BEFORE LIGHTING,smell allaround theappliance
areafor gas. Besure tosmell nexttothe floorbecause
some gas is heavier than air and will settle on the
floor.
WHATTODOIFYOUSMELLGAS:
- Do not try to light any appliance.
- Do not touch any electric 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. Forceor attemptedrepair mayresult ina fireor
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.
PN91211 02/05
LIGHTING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
Page 8
6. Wait five (5) minutes to clear out any gas. Then smell for
gas, including near the floor. If you smell gas, STOP!
Follow “B” in the information on the safety label. If you
don’t smell gas, go to the next step.
7. Open sight glass cover.
8. Locate red piezo ignitor button on side of gas control.
Locate pilot behind sight glass. (Follow metal pilot tube
from gas control).
9. Turngas controlknob counterclockwise to“PILOT”.
10. Push in pilot control knob and hold in. Immediately begin
a series of pushing and releasing the red piezo ignitor
button, while observing the pilot through the sight glass.
Continue to spark until pilot is lit. Continue to hold the
pilot control knob in for about one (1) minute after the
pilot is lit. Release the pilot control knob and it will pop
back up. Pilot should remain lit. If pilot goes out, repeat
steps 4 thru 9.
- If knob does not pop up when released, STOP and
immediately call your service technician or gas supplier.
- 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. Close sight glass cover.
12. Turn gas control knob counterclockwise to “ON”.
13. Replace lower front panel.
14. Turn on all electric to the appliance.
15. Set thermostat to desired setting. PN91211 02/05
1. Turn thermostat to it’s lowest setting.
2. Turn off all electric power to the appliance if service is to be performed.
3. Remove lower front panel.
4. Push in gas control knob slightly and turn clockwise to “OFF”. Do not force.
5. Replace lower front panel. PN91211 02/05
Gas Control
Knob NOTE: Knob
can not be
turned from
“PILOT”to
“OFF” unless
knob is pushed
in slightly. Do
not force.
Pilot Control Knob
1. STOP! Read the information on the safety label.
2. Set thermostat to lowest setting.
3. Turn off all electric power to the appliance.
4. Remove lower front panel.
5. Push in gas control knob slightly and turn clcockwise
to “OFF”.

LIGHTING INSTRUCTIONS: DVCF407C-H/408C-H, DVCF557C-H/558C-H
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 orloss of life.
A. This appliance is equipped with an ignition device which
automatically lights the pilot. Do not try to light the
pilot by hand.
B. BEFOREOPERATING,smell all aroundtheappliancearea
for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.
WHATTODOIFYOUSMELLGAS:
- Do not try to light any appliance.
- Do not touch any electric 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
turnby hand,don’t trytorepair it,call aqualified service
technician. Forceor attemptedrepair mayresult ina 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. PN 91214 02/05
LIGHTING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
Page 9
1. Turn thermostat to it’s lowest setting.
2. Turn off all electric power to the appliance if service is to be performed.
3. Remove lower front panel.
4. Push in gas control knob slightly and turn clockwise to “OFF”. Do not force.
5. Replace lower front panel. PN91214 02/05
Gas Control
Knob
1. STOP! Read the information on the safety label.
2. Set thermostat to lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition device which
automatically lights the pilot. Do not try to light the pilot
by hand.
5. Remove lower front panel.
6. Push in gas control knob slightly and turn clockwise
to “OFF”.
7. Wait five (5) minutes to clear out any gas. Then smell for
gas, including near the floor. If you smell gas, STOP!
Follow “B” in the information on the safety label. If you
don’t smell gas, go to the next step.
NOTE: Knob
can not be
turned to
“OFF” unless
knob is pushed
in slightly. Do
not force.
8. Turn gas control knob counterclockwise to “ON”.
9. Replace lower front panel.
10. Turn on all electric power to the appliance.
11. Set thermostat to desired setting.
12. If the appliance will not operate, follow the
instructions “TO TURN OFF GAS TO
APPLIANCE” and call your service technician or
gas supplier.
PN91214 02/05
Gas Control
Knob

PILOT ADJUSTMENT
Locate the pilot adjustment screw on the valve. The
pilot flame should surround at least the top 3/8” of the
powerpile (pilot generator) or flame sensor (see Figure
7). The pilot is unregulated so it will be operating at
inlet line pressure (Max. 7” w.c. for Natural Gas and
11” w.c. for Propane). To decrease the pilot flame,
turn the screw clockwise (approximately six full
turns to bottom of pilot light channel) until you produce
sufficient flame at the minimum noise level.
TO REMOVE MAIN BURNER FOR
INSPECTIONANDCLEANING
1. Turn thermostat to lowest setting and allow furnace to cool.
2. Turn off all electric power to furnace.
3. Remove lower grille.
4. Disconnect gas supply to valve.
5. Disconnect wires from gas valve.
6. Remove 15 screws holding burner door to burner box. Pull
door forward to remove complete burner, gas valve assembly.
7. After inspecting and cleaning, place burner assembly back
into burner box and tighten 15 screws. NOTE: Be sure door
gasket is not damaged and will effect a proper seal or pilot
outage will occur.
8. Connect wires back to valve.
9. Connect gas supply back to valve.
10. Turn on electric to furnace.
11. Follow lighting instructions, and replace lower grille.
It is recommended that the furnace and all components be inspected
at least annually by a qualified service technician. This should
include the burner, pilot, heat exchanger, and vent system. Be sure
that the flow of combustion and ventilation air is not obstructed.
IMPORTANT: Keep burner and control compartment clean.
Vacuum control compartment at the start of the heating season
and as often as needed.
PROPERBURNER FLAME
The burner flame may be observed by raising the sight glass cover.
A proper flame will have a dark blue inner mantle that sits right on
top of the burners with a lighter blue outer mantle rising above the
burner (See Figure 8). There may be some yellow where the pilot
flame and burner flame meet. There is no primary air adjustment on
the burner, and proper flame is assured since the correct manifold
pressure and orificing has been done at the factory. NOTE: It is
advised that the burner flames be checked at least twice during the
heating season for any changes in burner flame characteristics.
The appliance area must be kept clear and free from combustible
materials, gasoline, and other flammable vapors and liquids. This
heater comes from the factory with the proper burner orifice for
elevations up to 2,000 feet. Heaters installed above 2,000 feet must
be derated 4% for every 1,000 feet. For the proper orifice size, find
theModel Numberandelevation ontheorifice chart. Replaceburner
orifice. Orifice change must be completed by a qualified installer or
service technician.
Page 10
NATURAL GAS
MODEL 0 to 2,000 - 4,000 - 6,000 - 8,000 –
NUMBER 2,000’ 4,000’ 6,000’ 8,000’ 10,000’
DVCF403C 32 34 35 36 40
DVCF407C 32 34 35 36 40
DVCF553C 3.6m 29 30 30 31
DVCF557C 3.6m 29 30 30 31
ORDER KIT #49840 2287-1 HIGH ALTITUDE KIT
L.P. GAS
MODEL 0 to 2,000 - 4,000 - 6,000 - 8,000 –
NUMBER 2,000’ 4,000’ 6,000’ 8,000’ 10,000’
DVCF404C 49 50 51 52 52
DVCF408C 49 50 51 52 52
DVCF554C 44 45 47 48 49
DVCF558C 44 45 47 48 49
ORDER KIT #49840 2287-1 HIGH ALTITUDE KIT
PILOTFLAMEADJUSTMENT: Pilot flame
should envelop 3/8 to 1/2 inch of the tip of sensor.
FIGURE7A FIGURE 7B
STANDING PILOT I.I.D. PILOT
1-1/2
3/4
FIGURE8
3/8” to 1/2” 3/8”
to 1/2”
PilotAdj. Screw PilotAdj. Screw
HONEYWELL
VR8200HSERIES HONEYWELL
VR8204HSERIES
FIGURE7C FIGURE 7D
STANDING PILOT I.I.D. PILOT

DVCF403C / 404C-H STANDING PILOT DVCF553C / 554C-H
MOTOR
FAN SWITCH
LIMIT SWITCH
115V.A.C.
24V.A.C.
TRANSFORMER
THERMOSTAT
AUXILIARY
LIMIT GAS
VALVE
DVCF403C-H
DVCF404C-H
LADDER
SCHEMATIC
LIMIT SWITCH
THERMOSTAT
AUXILIARY
LIMIT GAS
VALVE
DVCF553C-H
DVCF554C-H
LADDER
SCHEMATIC
FAN SWITCH
115V.A.C.
TRANSFORMER
24V.A.C.
MOTOR
SELECTOR
SWITCH
Page11
THERMOSTAT
POWER
CORD
MOTOR
WHITE
BLACK
BROWN
BLACK
TRANSFORMER
BLUE BLACK
LIMIT
SWITCH FAN
SWITCH
AUXILIARY
LIMIT SWITCH
GASVALVE
BLACK
BLACK
BLACK
BLACK
BLACK
GREEN
WHITE
WHITE
DVCF403/404C-H
PICTORIAL SCHEMATIC
MODELNO. AMPS
DVCF403C-H 1.95
DVCF404C-H 1.95
BLACK
BLUE
TH TR
BROWN
MOTOR
THERMOSTAT POWER
CORD
WHITE
BLACK
BLACK
RED
RED BROWN
BLACK
TRANSFORMER
GREEN
WHITE
WHITE
BLACK
BLACK
BLACK
BLACK
BLACK
GASVALVE
AUXILIARY
LIMIT SWITCH
BROWN
LIMIT
SWITCH FAN
SWITCH
SELECTOR
SWITCH
BLACK
DVCF553/554C-H
PICTORIAL SCHEMATIC
MODELNO. AMPS
DVCF553-C-H 3.05
DVCF554-C-H 3.05
GREEN
BLUE
BLUE BLACK
RED
TH TR

DVCF407C-H, DVCF408C-H I.I.D. DVCF557C-H, DVCF558C-H
Page 12
FAN SWITCH MOTOR
LIMIT SWITCH
THERMOSTAT
115V.A.C.
24V.A.C.
TRANSFORMER
IGNITION
MODULE
GAS
VALVE
DVCF407C-H
DVCF408C-H
LADDER
SCHEMATIC
MODELNO. AMPS
DVCF407C-H 2.2
DVCF408C-H 2.25
AUXILIARYLIMIT
MODELNO. AMPS
DVCF557C-H 3.3
DVCF558C-H 3.35
SELECTOR
SWITCH MOTOR
FAN SWITCH
LIMIT SWITCH
115V.A.C.
TRANSFORMER
24V.A.C.
THERMOSTAT
DVCF557C-H
DVCF558C-H
LADDER
SCHEMATIC
IGNITION
MODULE
GAS
VALVE
AUXILIARYLIMIT
PILOT
THERMOSTAT POWER
CORD
MOTOR
GREEN
WHITE
WHITE
BLACK
BROWN
BLACK
WHITE
BLACK
BLUE BLACK
TRANSFORMER
LIMIT
SWITCH FAN
SWITCH
AUXILIARY
LIMIT
SWITCH
BLACK
GASVALVE
Spark
Sense
24 V
24 V
Gnd.
Gnd(Burner)
PV
MV/PV
MV
BLACK
BLACK
DVCF407/408C-H
PICTORIAL
SCHEMATIC
IGNITION
MODULE
BLACK
BLACK
BROWN
MV/PV
MV
PV
BLACK
BLUE
THERMOSTAT
POWER
CORD
GREEN
WHITE
WHITE
BLACK
BROWN
BLACK
WHITE
BLACK MOTOR
GREEN
BLACK
RED
RED
TRANSFORMER
LIMIT
SWITCH FAN
SWITCH
Selector
Switch
Black
BLACK
BLACK
BLACK
AUXILIARY
LIMIT
SWITCH
BLACK
PILOT
GASVALVE
DVCF557/558C-H
PICTORIAL
SCHEMATIC
BLUE
BLUE RED
BLACK
BROWN
MV/PV MV
PV
IGNITION
MODULE
Spark
Sense
24 V
24 V
Gnd.
Gnd(Burner)
PV
MV/PV
MV

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper operation after servicing.
TERMINAL BLOCK WIRING DIAGRAM
PowerCord
(Green)
TerminalBoard
Ground (Green)
Motor
(Green) PowerCord (White)
Transformer(Black)
Motor(Black)
Fan
Switch
(Black)
Limit
Switch
(Blue)
Transformer(Black)
PowerCord(Black)
Fan/LimitSwitch(Brown)
P/N91122
DVCF403, 404, 407, 408C-H
MOTOR(White)
MAINTENANCE INSTRUCTION
For proper and safe operation, keep furnace and furnace area clean.
At regular intervals turn control valve off, let cool and clean inside
control compartment. To clean cabinet, use only a damp cloth.
Do not use any kind of solvent or cleaning fluid that could leave a
residue or invisible coating that would burn or give off fumes
when furnace is turned on.
Have the furnace checked, cleaned, and repaired by a qualified
service technician, including the vent system, pilot and burner
operation prior to use each year.
The bearings of the fan motor should be oiled every twelve (12)
months with S.A.E. 20 oil. (See Figure 10).
Follow a regular service and maintenance schedule for safe and
efficient operation.
Examine the venting system as a routine part of the safety
performance check on an annual basis.
MANUAL RESET SWITCH
For your safety this furnace is equipped with a manual reset limit switch. In case of failure by the primary limit switch, this
switch will shut the valve down completely before unsafe temperatures are reached. After a cool down period, switch must be
manually reset. If outages persist, call a qualified service person.
OILTUBE
FIGURE10
WARNING: This is a gas-fired appliance. Keep the area clear of gasoline and other flammaable vapors and
liquids. All combustible material must be kept clear of this area to avoid fire or explosion.
Page 13
Fan/LimitSwitch(Brown)
PowerCord (White)
Transformer(Black)
Selector Switch
(Red)
Motor
(Red)
PowerCord
(Green)
TerminalBoard
Ground (Green)
Motor
(Green) PowerCord(Black)
Limit
Switch
(Blue)
Selector
Switch
(Black)
Motor(Black)
Transformer(Black)
MOTOR(White)
P/N91123
DVCF553, 554, 557, 558C-H

OPTIONALSIDEDISCHARGE KITS
This kit must be installed by a qualified installer or service technician.
SIDE DISCHARGE ON CASING
1. Use Optional Kit No. 306SR-A.
2. Cut out and remove embossed area on casing side.
3. Remove knockout from inner liner.
4. Place 1-1/2” boot from kit through opening,
matching flanges of boot to knockout on inner liner.
5. Mark screw holes and remove boot.
6. Drill holes with a 1/8” drill.
7. Attach inner boot with screws provided.
8. Place grille into position, drill holes into casing,
and attach with screws provided.
SIDE DISCHARGE (With Extension Boot)
NOTE: Maximum boot length is 10 inches.
1. Use Optional Kit No. 30SRB-A.
2. Cut opening in drywall as shown in Fig. 9.
3. Position plaster ground as shown in Figure 9.
(Optional).
4. Cut out and remove embossed section on casing side.
5. Remove knockout on inner liner.
6. Put heater into position.
7. Place inner boot into position, mark and cut boot
flush with wall. Place outer boot into position, mark
and cut boot flush with wall.
8. Place boot trim into position, slide inner boot through
wall from adjacent room and attach to inner liner.
Slide outer boot through wall from adjacent room
and attach to casing side.
9. Place grill in position and secure to wall.
ROUGH-INS FOR SIDE DISCHARGE
Install plaster grounds as shown in Figure 9. NOTE: When
side discharge Kit No. 30SRB is being used, furnace should be
set exactly 4” from side wall.
KIT NO. 306SR
SIDE REGISTER - FLUSH
KIT NO. 30SRB
SIDE REGISTER W/BOOT
Page 14
Plaster
Ground
10-3/16”
14-3/8”
SIDE
FIGURE9

14-PEK KIT INSTRUCTIONS
(14’PLUG EXTENSIONKIT)
This kit must be installed by a qualified installer or service technician.
FORNON-RECESSED INSTALLATIONS ONLY
90Degree
Outside
Corner
3FT.
SECTION
WALL
3FT.
SECTION
BOTTOM
SECTION
1
2
3
4
UNITS WITH TERMINAL BOARD
STEP #
1. Turn heater off following Section 3 in “Lighting
Instructions” and allow to cool.
2. Turn off all electricity to heater.
3. Remove top louver assembly, fan shroud and fan
blade.
4. Loosen two screws on romex connector.
5. Remove junction box cover plate.
6. Disconnect three power cord terminals and pull
power cord out of top of heater.
7. Insert power cord provided in kit through romex
connectorand plugonto terminal boardfollowing
wiring diagram found in lighting and operating
instructions.
8. Tighten two screws on romex connector.
9. Replace junction box cover plate.
10. Replace fan blade, fan shroud and top louver
assembly.
11. Snap 90 degree outside corner (Ref. 1) onto 3
footsection (Ref. 2)plastic raceway. Insertpower
cordand removebluebacking fromadhesivestrip
on raceway and apply to side of heater.
12. Insert power cord into second 3-foot section of
raceway (Ref. 3) and remove blue backing and
apply to side of heater, butting up against bottom
of other section.
13. Cut14-inchlong bottom sectiontorequiredlength
(see chart), insert power cord, remove backing
and apply to side of heater.
14. Plug power cord into wall receptacle.
15. Light the heater following lighting instructions.
Page 15
LENGTHOFBOTTOM
SECTION (REF. 4)
MODEL NO. PLASTIC RACEWAY
DVCF40 5-5/16 Inches
DVCF55 14 Inches
NOTE: Above lengths terminate approximately
2 inches above floor.

DIRECTVENTCOUNTERFLOWWALLFURNACE
MODELS:
DVCF403C-H, DVCF404C-H
DVCF407C-H, DVCF408C-H
DVCF553C-H, DVCF554C-H
DVCF557C-H, DVCF558C-H
Pricesandspecificationssubjecttochange
withoutnotice. Allprices areF.O.B.factory.
Page 16
39 1g
51
1a
1f
1e
1d
24
1b
36
2
35
61
50
18
11
16
17
3
52 38
30
8
7
922 44
10
6
26
1c
4
19 21 20
ATTN: CONTRACTORS AND SERVICE
TECHNICIANS, we only sell parts through our
wholesalers, but the prices listed are for your
convenience. For prompt parts service, contact
the wholesaler from which you purchased your
Cozy heater. NOTE: Parts & schematic draw-
ings on current models are shown at
www.cozyheaters.com.
APRIL2013
REV. 04/2013
THERMOSTAT
23
VENTASSEMBLY
40 37 49 48 47
46
45
USE ONLYFACTORYSUPPLIED PARTS
I.I.D. CONTROL MODULE
HONEYWELL
43
Spark
Sense
24 V
24V Gnd.
Gnd.(Burner)
PV
MV/PV
MV
BURNERASSEMBLY
DVCF40C-H, DVCF55C-H, SERIES
55 14 15 12 25b 28b
28 25
34
58
13
13b
41
53
57
56
31
59
60
32
33
42

HOWTOPROPERLYORDER PARTS
In addition to part description and part number, please give model number, serial number, and type of gas used.
APRIL2013
REV.04/13
Page 17
*Requires 2 ** Requires4
NAT. DVCF407C-H DVCF553C-H DVCF557C-H
MODEL NUMBER L.P. DVCF408C-H DVCF554C-H DVCF558C-H
REF. PART LIST PART LIST PART LIST PART LIST
PART DESCRIPTION NO. NO. PRICE NO. PRICE NO. PRICE NO. PRICE
Casing Side, Right 1a 34065 68.80$ 34065 68.80$ 34560 75.30$ 34560 75.30$
Casing Side, Left 1b 34055 68.80$ 34055 68.80$ 34550 75.30$ 34550 75.30$
Center Front Panel Assembly 1c 34104 34.20$ 34104 34.20$ 30534 35.30$ 30534 35.30$
Top Assembly 1d 34050 13.00$ 34050 13.00$ 34050 13.00$ 34050 13.00$
Upper Back Assembly 1e 34080 52.50$ 34080 52.50$ 34080 52.50$ 34080 52.50$
Lower Back Assembly 1f 34090 44.80$ 34090 44.80$ 34575 49.50$ 34575 49.50$
BottomAssembly 1g 34070 19.70$ 34070 19.70$ 34070 19.70$ 34070 19.70$
Casing Mounting Brackets N/A *30260 1.60$ *30260 1.60$ *30260 1.60$ *30260 1.60$
Liner Assembly 2 34115 99.80$ 34115 99.80$ 34600 107.50$ 34600 107.50$
Fan Shroud Assembly 3 34140 29.20$ 34140 29.20$ 34140 29.20$ 34140 29.20$
Top Louver 4 34100 20.00$ 34100 20.00$ 34590 21.70$ 34590 21.70$
BottomLouver Assembly 6 30100 38.90$ 30100 38.90$ 30100 38.90$ 30100 38.90$
Upper Front Shield 7 30250 4.30$ 30250 4.30$ 30250 4.30$ 30250 4.30$
Switch Box 8 30252 8.80$ 30252 8.80$ 30450 8.90$ 30450 8.90$
Switch Box Cover 9 30253 3.50$ 30253 3.50$ 30253 3.50$ 30253 3.50$
Lower Front Shield 10 30256 6.30$ 30256 6.30$ 30256 6.30$ 30256 6.30$
Motor Mounting Bracket 11 *34088 4.40$ *34088 4.40$ *34579 2.50$ *34579 2.50$
Burner 12 72107 46.80$ 72107 46.80$ 72107 46.80$ 72107 46.80$
Pilot Bracket 53 34440 4.90$ 34440 4.90$ 34440 4.90$ 34440 4.90$
Valve, VR8200H-1004, Nat. W/78089 Dis. Bushing 13 78090 153.50$ N/A N/A 78090 153.50$ N/A N/A
Valve, VR8200H-1103, L.P. w/78089 Dis. Bushing 13 78091 158.60$ N/A N/A 78091 158.60$ N/A N/A
Valve, VR8204H-1006, Nat. w/78089 Dis. Bushing 13b N/A N/A 78092 150.70$ N/A N/A 78092 150.70$
Valve, VR8204H-1006 (Conv.), L.P. w/78089 Bushing 13b N/A N/A 78093 150.70$ N/A N/A 78093 150.70$
Disappearing Bushing 1/2x3/8 N/A 78089 2.40$ 78089 2.40$ 78089 2.40$ 78089 2.40$
Manifold 14 72103 23.50$ 72103 23.50$ 72103 23.50$ 72103 23.50$
Burner Orifice, Natural Gas 15 72147 4.20$ 72147 4.20$ 72140 4.20$ 72140 4.20$
Burner Orifice, L.P. Gas 15 72149 4.20$ 72149 4.20$ 72141 4.20$ 72141 4.20$
Fan Motor 16 72108 90.70$ 72108 90.70$ 72110 103.00$ 72110 103.00$
Fan Blade 17 78101 29.60$ 78101 29.60$ 78101 29.60$ 78101 29.60$
Rubber Grommet (Requires 4) 18 **78010 3.80$ **78010 3.80$ **78010 3.80$ **78010 3.80$
Limit Switch 60T11-L220F 19 N/A N/A N/A N/A 72160 7.20$ 72160 7.20$
Limit Switch 60T11-L180F 19 78065 7.20$ 78065 7.20$ N/A N/A N/A N/A
Fan Switch 60T12-120-15 Deg. F 20 78067 7.50$ 78067 7.50$ 78067 7.50$ 78067 7.50$
Speed Switch 60T13-F160-30 21 N/A N/A N/A N/A 78066 10.90$ 78066 10.90$
Aux. Limit Switch 60T15-L350 22 78086 11.40$ 78086 11.40$ 78086 11.40$ 78086 11.40$
Thermostat 24 Volt 23 78355 24.60$ 78355 24.60$ 78355 24.60$ 78355 24.60$
Transformer 24 78069 28.90$ 78069 28.90$ 78069 28.90$ 78069 28.90$
Transformer Plate N/A 34089 4.60$ 34089 4.60$ 34089 4.60$ 34089 4.60$
Terminal Board 35 78300 6.20$ 78300 6.20$ 78300 6.20$ 78300 6.20$
Pilot 0.140.512, Natural Gas (w/Electrode) 25 72020 27.80$ N/A N/A 72020 27.80$ N/A N/A
Pilot 0.140.502, L.P. Gas (w/Electrode) 25 72021 27.80$ N/A N/A 72021 27.80$ N/A N/A
Cozy Handle 26 84003 2.70$ 84003 2.70$ 84003 2.70$ 84003 2.70$
Thermostat Wire 27 74518 1.70$ 74518 1.70$ 74518 1.70$ 74518 1.70$
Thermocouple Q309A1954 28 78095 14.00$ N/A N/A 78095 14.00$ N/A N/A
Insulated Staples 29 74209 1.60$ 74209 1.60$ 74209 1.60$ 74209 1.60$
Pilot Assy. Electronic w/Flame Ignitor Nat. 25b/28b N/A N/A 78098 36.60$ N/A N/A 78098 36.60$
Pilot Assy. Electronic w/Flame Ignitor L.P. 25b/28b N/A N/A 78099 36.60$ N/A N/A 78099 36.60$
Wiring Harness 30 72251 23.00$ 72251 23.00$ 72250 25.90$ 72250 25.90$
DVCF403C-H
DVCF404C-H
PARTS LIST CONTINUED
Mr. Contractor, we only sell parts through our wholesalers, but the prices listed above are for your convenience. For prompt
parts service, contact the wholesaler from which you purchased your Cozy heater. NOTE: Parts & schematic drawings on
current models are shown at www.cozyheaters.com.

Page 18
In addition to part description and part number, please give model number, serial number, and type of gas used.
HOWTO PROPERLYORDERPARTS
APRIL2013
REV.04/13
NAT.
MODEL NUMBER L.P.
REF. PART LIST PART LIST PART LIST PART LIST
PART DESCRIPTION NO. NO. PRICE NO. PRICE NO. PRICE NO. PRICE
Pow er Cord N/A 78213 5.80$ 78213 5.80$ 78213 5.80$ 78213 5.80$
Sight Glass 31 43252 8.00$ 43252 8.00$ 43252 8.00$ 43252 8.00$
Sight Glass Cover 32 43258 1.90$ 43258 1.90$ 43258 1.90$ 43258 1.90$
Sight Glass Gasket - 1-3/8x3" 33 72067 1.90$ 72067 1.90$ 72067 1.90$ 72067 1.90$
Burner Box Gasket 34 72059 7.20$ 72059 7.20$ 72059 7.20$ 72059 7.20$
Slip Joint Assembly w/Gaskets 50 34220 33.40$ 34220 33.40$ 34220 33.40$ 34220 33.40$
Slip Joint Gasket - 3-1/2x7 N/A 72057 5.80$ 72057 5.80$ 72057 5.80$ 72057 5.80$
Slip Joint Ring Gasket - 9-1/2" Circle 61 72056 2.70$ 72056 2.70$ 72056 2.70$ 72056 2.70$
Slip Jt. Ring Gsk. (2 pc. Graphite) 3-3/4x7-1/2" N/A 72058 5.80$ 72058 5.80$ 72058 5.80$ 72058 5.80$
Flue Outlet Pipe Gasket - 7" Circle 36 72055 2.30$ 72055 2.30$ 72055 2.30$ 72055 2.30$
Air Intake Pipe Gasket - 9-1/2" Circle 37 72054 4.60$ 72054 4.60$ 72054 4.60$ 72054 4.60$
Heat Exchanger Cover Plate 52 34195 4.40$ 34195 4.40$ 34195 4.40$ 34195 4.40$
Heat Exchanger Cover Plate Gasket - 7x6" 38 72053 2.00$ 72053 2.00$ 72053 2.00$ 72053 2.00$
Burner Box Inlet Gasket - 11-1/2x5" (Air Box) 39 72052 8.60$ 72052 8.60$ 72052 8.60$ 72052 8.60$
Exhaust Pipe Gasket - 7" Circle 40 72051 2.70$ 72051 2.70$ 72051 2.70$ 72051 2.70$
Manifold Gasket - 2x2" 55 72068 1.90$ 72068 1.90$ 72068 1.90$ 72068 1.90$
Piezo Igniter 41 80016 7.00$ N/A N/A 80016 7.00$ N/A N/A
Igniter Wire 0.028.508 42 72022 5.80$ N/A N/A 72022 5.80$ N/A N/A
Ignition ControlBox S8600B, Honeywell 43 N/A N/A 78097 157.10$ N/A N/A 78097 157.10$
Heat Exchanger Kit 44 34805 334.30$ 34805 334.30$ 34815 336.90$ 34815 336.90$
Vent Cap Assy. w/Spacer Plate Complete 45 &46 34250 157.00
$ 34250 157.00$ 34250 157.00$ 34250 157.00$
Vent Cap Mounting Kit 47 34330 13.10$ 34330 13.10$ 34330 13.10$ 34330 13.10$
Air Intake Pipe Assembly 48 34280 34.90$ 34280 34.90$ 34280 34.90$ 34280 34.90$
Vent Exhaust Pipe Assembly 49 34290 27.20$ 34290 27.20$ 34290 27.20$ 34290 27.20$
Elbow 3/8x90 Degree N/A 84501 2.50$ 84501 2.50$ 84501 2.50$ 84501 2.50$
Air Drop Assembly 51 34201 152.80$ 34201 152.80$ 34630 171.90$ 34630 171.90$
Burner Box BottomAssembly 58 34400 62.40$ 34400 62.40$ 34400 62.40$ 34400 62.40$
Burner Access Door 56 34425 13.50$ 34425 13.50$ 34425 13.50$ 34425 13.50$
Burner Access Gasket - 4x13" 57 72065 10.10$ 72065 10.10$ 72065 10.10$ 72065 10.10$
90 Deg. Pilot Fitting N/A N/A N/A 70352 13.10$ N/A N/A 70352 13.10$
Pilot Tube Bracket 60 34475 2.40$ 34475 2.40$ 34475 2.40$ 34475 2.40$
Vent Terminal Shield N/A 34950 74.60$ 34950 74.60$ 34950 74.60$ 34950 74.60$
Pilot Tubing w/Fittings - 16" N/A 78452 6.60$ 78452 6.60$ 78452 6.60$ 78452 6.60$
Pilot Tube Gasket - 2-1/2x3/4" 59 72063 1.60$ 72063 1.60$ 72063 1.60$ 72063 1.60$
Lighting Instructions DVCF N/A 91260 N/C 91261 N/C 91260 N/C 91261 N/C
DVCF403C-H DVCF407C-H DVCF553C-H
DVCF554C-H DVCF557C-H DVCF558C-HDVCF404C-H DVCF408C-H
Mr. Contractor, we only sell parts through our wholesalers, but the prices listed above are for your convenience. For prompt
parts service, contact the wholesaler from which you purchased your Cozy heater. NOTE: Parts & schematic drawings on
current models are shown at www.cozyheaters.com.

TROUBLE SHOOTING CHART
For use by a qualified installer or service technician.
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
Flame too large 1. Defective operator section of valve. 1. Replace valve.
2. Burner orifice too large. 2. Check with local gas company for proper orifice
size and replace.
3. If installed above 2,000 feet. 3. See orifice chart, page 10.
Yellow burner flame 1. Clogged burner ports. 1. Remove main burner and check for obstructions in
throat, ports, and orifices. Clean - but do not enlarge
ports or orifices.
2. Obstructions around vent cap. 2. Make sure area around vent cap is clear, be sure
vent system is sealed.
Gas Odor 1. Gas leak. 1. See Page 1.
Delayed Ignition 1. Pilot flame too small. 1. Adjust pilot flame.
2. Burner ports clogged at pilot. 2. Clean burner ports (do not enlarge).
3. Low gas pressure. 3. Check gas supply pressure.
4. Pilot decreases in size when main 4. Supply piping is too small. Consult local gas
burners come on. company or competent installer.
Failure to ignite 1. Main gas off. 1. Open all manual gas valves.
2. Thermostat not set high enough to call 2. Set thermostat to higher temperature.
for heat.
3. Clogged burner orifice. 3. Clean burner orifice (do not enlarge).
4. Thermostat wired wrong or defective. 4. Check wiring, jump across thermostat terminals at
valve, if valve open, re-check wires, replace thermostat.
Burner won’t turn off 1. Defective or damaged thermostat wire, 1. Can be checked by removing wire from valve terminal.
or thermostat. If valve goes off, replace wire or thermostat.
2. Thermostat location. 2. Follow instructions, check location.
3. Defective or sticking valve. 3. Replace valve.
4. Excessive gas pressure. 4. Contact utility supplying gas.
Incorrect gas input 1. Gas input not checked. 1. Re-check gas input.
2. Clogged orifice. 2. Clean orifice with a smooth wood toothpick,
do not enlarge.
Not enough heat 1. Furnace undersized. 1. This is especially true when a dwelling or room is
enlarged. Have the heat loss calculated and
compare to furnace output. Your gas company can
supply you with this information. If furnace is
undersized, replace with correct size unit.
2. Thermostat set too low. 2. Raise temperature setting.
3. Incorrect supply pressure. 3. Check supply pressure.
Too much heat 1. Thermostat set too high. 1. Lower temperature setting.
2. Combination control valve stuck open. 2. Replace combination control valve.
Pilot and main burner 1. Weak thermocouple. 1. Check millivoltage and replace if low.
go out during normal 2. Input too high. 2. Check input rate.
operation 3. Cover around pilot lighter hole not 3. Tighten wing nuts securing cover and sight glass.
air tight. Check and replace gasket if needed.
4. Vent tubes not properly installed or 4. Follow instructions. Check both exhaust and air
sealed. intake tubes, and vent cap. Be sure all gaskets are
in place and properly sealed. Use only tubes and
vent cap supplied. Do not alter vent tubes or cap.
Page 19

TROUBLESHOOTINGCHART-Continued
Foruse bya qualifiedinstalleror servicetechnician.
SYMPTOM POSSIBLE CAUSES CORRECTIVEACTION
Burner won’t turn on 1. Gas valve not turned on. 1. Turn gas valve to “on” position.
2. No voltage to valve. 2. Check for 24 Volts to valve from transformer.
3. Defective thermostat. 3. Check wall thermostat.
4. No 115 V. Line voltage. 4. Provide line voltage.
5. Gas valve defective. 5. Replace gas valve.
6. Manual reset switch not engaged. 6. Depress red button on switch.
(STANDING PILOT) 1. Air in line. 1. Bleed line.
2. Defective thermocouple 2. Replace thermocouple.
Pilot won’t light, or 3. Pilot flame too low. 3. Adjust pilot flame.
stay lit 4. Manual reset switch not engaged. 4. Depress red button on switch.
(I.I.D. PILOT) 1. Sparker won’t work. 1. Check wire connections, provide adequate
ground.
Pilot won’t light 2. Sparker won’t light pilot. 2. {a} Pilot flame too small.
{b} Turn valve to “on” position.
{c} Check for pilot restriction.
3. Manual reset switch not engaged. 3. Depress red button on switch.
SERVICE RECORD SERVICE RECORD
Page 20
TROUBLE SHOOTING CHART FOR INTERMITTENT IGNITION SYSTEM
(I.I.D.) - SEE “PAGE 21”