COZY CDV155B and User manual

DIRECT VENT
WALL FURNACE
INSTALLATION AND
OPERATING INSTRUCTIONS
P/N 70905
REV.02/2010
RR
INSTALLER: Leavethismanualwith the
appliance.
CONSUMER: Retainthis manualfor
futurereference.
NATURAL GAS CDV155B CDV255B CDV335B
L.P. GAS CDV156B CDV256B CDV336B
MODEL NUMBERS
WARNING: Iftheinformation in thismanualisnot
followedexactly, a fireorexplosionmayresultcausing
propertydamage,personalinjuryor lossoflife.
- Donot store or use gasolineor other flammable
vaporsandliquidsinthe vicinityofthisorany
otherappliance.
- WHATTO DOIFYOUSMELLGAS:


Donottrytolightany appliance.


Donottouchanyelectricalswitch,donotuseany
phoneinyourbuilding.


Immediatelycallyourgassupplierfroma neighbor’s
phone. Followthegassupplier’s instructions.


Ifyoucannotreachyourgassupplier,callthefire
department.
- INSTALLATIONAND SERVICEMUSTBE
PERFORMEDBYAQUALIFIEDINSTALLER,
SERVICEAGENCYORTHEGASSUPPLIER.
CDV15-B
CDV25/
CDV33-B
The coating selected to provide longer life to
the heat exchanger may smoke slightly upon
initial firing. Please provide adequate
ventilation if this occurs.
The appliance may be installed in an aftermarket permanently located, manufactured home (USA only)
or mobile home, where not prohibited by 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.
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 your safety, this furnace
and the vent system should be inspected at least annually by a qualified service technician.
This unit is for residential use only and is not approved for installation in greenhouses, or environments
involving dusty, wet, corrosive, or explosive conditions. Such conditions will invalidate the warranty and
may create unsafe conditions.
Installation,maintenance, service,trouble shootingandrepairsmustbeperformedbyaqualifiedserviceagency.
Mr./Mrs. Homeowner,DO NOTattempt anyoftheseprocedures yourselfasthiscould exposeyouto property
damage,personalinjury,orlossoflifeandwillinvalidateallwarranties.

INTRODUCTION
THIS IS A GAS-FIRED, DIRECT VENT WALL FURNACE THAT WILL OPERATE SAFELY AND
PROVIDE AN EFFICIENT SOURCE OF HEAT WHEN INSTALLED, OPERATED AND
MAINTAINED AS RECOMMENDED IN THESE INSTALLATION AND OPERATING
INSTRUCTIONS. READ THESE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING,
SERVICING, OR USING THE APPLIANCE. IF YOU DO NOT UNDERSTAND ANY PART OF
THESE INSTRUCTIONS CONSULT LOCAL AUTHORITIES, OTHER QUALIFIED INSTALLERS,
SERVICETECHNICIAN,THEGAS SUPPLIERORTHE MANUFACTURER.
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SAFETYRULES
1. Improper installation, adjustment, alteration, service, or maintenance can cause property damage, bodily injury, or death.
2. Use in other than a residential application may result in unsatisfactory performance and may void the warranty.
3. This appliance must be installed in accordance with local codes, if any; if not, follow the National Fuel Gas CodeANSI
Z223.1/NFPA54or the National Gas and Propane InstallationCode CSA-B149.1.
4. Do not install this wall furnace in a recreational vehicle or trailer.
5. Do not operate wall furnace unless it is connected to the supplied vent system with vent cap in place.
6. Check the rating label attached to the wall furnace to be sure it is equipped for the type gas you intend to use.
7. Never use a match, candle, flame or other source of ignition to check for gas leaks. Use only soapy water or liquid detergent.
8. Have your wall furnace and vent system inspected at least annually by a qualified service technician.
SPECIFICATIONS AND DIMENSIONS
Your Direct Vent Wall Furnace is shipped complete in one carton. This carton contains the furnace, vent
cap, vent tube, air inlet tube, template with rough-in dimensions, installation and operating instructions, and
the thermostat with thermostat wire (if applicable). NOTE: There will be two cartons if optional vent kit
or blower is purchased.
MODEL INPUT GAS TYPE MAX.WALL MIN.WALL
NO. BTU/HR. WIDTH DEPTH HEIGHT CONN. GAS THICKNESS THICKNESS
CDV155B 15,000 18” 9-3/4” 29-3/4” ½” NAT. 24” 5”
CDV156B 15,000 18” 9-3/4” 29-3/4” ½” L.P. 24” 5”
CDV255B 25,000 34-1/2” 9-3/4” 31-3/4” ½” NAT. 24” 5”
CDV256B 25,000 34-1/2” 9-3/4” 31-3/4” ½” L.P. 24” 5”
CDV335B 33,000 34-1/2” 9-3/4” 31-3/4” ½” NAT. 15” 5”
CDV336B 33,000 34-1/2” 9-3/4” 31-3/4” ½” L.P. 15” 5”
CONTENTS
Introduction……………………………. 2
Specifications and Dimensions…………. 2
Safety Rules……………………………. 2/3
Clearances……………………………… 3/4
Location……………………………….. 5
Installation………………………………. 5 - 8
VentKits.................................................. 5 - 7
GasConnection....................................... 8
BBSK Instructions................................... 12/13
LightingInstructions…………………… 9
PilotAdjustment……………………….. 10
BurnerOrifice…………………………… 10
WiringDiagram………………………… 10
RemovingMainBurner………………… 10
ProperBurnerFlame…………………… 11
ThermostatInstallation………………… 11
InstallingOptionalBlowerKit………… 11
MaintenanceInstructions......................... 19
TroubleShooting………………………. 18
PartsDrawing………………………….. 14//16
Parts List……………………………….. 15 /17
Warranty……………………………….. 21
The State of Massachusetts requires that installation and service of a gas appliance be
performedbyaplumberorgasfitter licensed in the CommonwealthofMassachusetts.

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9. Before cleaning or servicing, turn off the gas and allow furnace to cool.
10. Do not operate wall furnace without outer casing in place.
11. Due to high temperatures, the wall furnace should be located out of traffic and away from furniture and drapes.
12. Children and adults should be alerted to the hazard of high surface temperature and should be kept away to avoid burns or
clothing ignition.
13. Young children should be carefully supervised when they are in the same room with the wall furnace.
14. Do not place clothing or other flammable material on or near the furnace.
15. Installation and repair should be done by a qualified service technician. The wall furnace should be inspected before use
and at least annually by a professional service technician. More frequent cleaning may be required due to excessive lint
from carpeting, bedding material, etc. It is imperative that control compartments, burner, and circulating air passageways of
the furnace be kept clean.
16. Do not install in a closet, alcove, or small hallway where the furnace could be isolated from the space to be heated by
closing a door.
17. Do not put anything around the furnace or vent cap that will obstruct the flow of combustion and ventilation air.
18. The appliance, when installed, must be electrically grounded in accordance with local codes or, in the absence of local
codes, with the latest edition of National Electrical Code, ANSI/NFPA 70. In Canada, use CSA C22.1 Canadian
Electrical Code.
19. Never operate this furnace without the sight glass in place or with the glass broken or missing.
20. If it is suspected that rising water may enter the furnace, turn off the gas immediately. 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.
21. It is necessary to replace damaged gaskets or sealing material within the vent or air intake system. Failure to do so may
result in property damage, personal injury or loss of life.
22. Any safety screen or guard removed for servicing must be replaced prior to operating heater.
23. A gas appliance must not be connected to a chimney flue serving a separate solid-fuel burning appliance.
SAFETY RULES - CONT’D.
CDV15-B CDV25 / CDV33-B ALL VENT CAPS
1. When the wall furnace is installed directly on carpeting, tile or other combustible material other than
wood flooring, the furnace shall be installed on a metal or wood panel extending the full width and
depth of the furnace.
2. 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 (46cm)
above the floor. Such equipment shall be located, 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 a nearby parked vehicle. Paint may discolor or rubber may
harden and crack. DO NOT allow heated discharge air to blow directly onto open or closed containers
of paint, gasoline or other liquids having flammable vapors.
CLEARANCES
18” Min.
12”
Min. 9”
Min.
12” Min.
FIGURE 3
RIGHTSIDEWALL
LEFTSIDE WALL
FIGURE 2
CEILING
30”
CEILING
FLOOR
4”
1” 0”
LEFTSIDE WALL
RIGHTSIDEWALL
FIGURE 1 FLOOR
1” 1”
24”
1/2”

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VENT TERMINAL CLEARANCES
VentTerminal Air Supply Inlet Area where terminal is not permitted
REFERENCELETTERTODRAWING CANADIANINSTALLATIONS U.S.INSTALLATIONS
A = Clearance above grade, veranda, 12Inches (30 cm) 12 Inches (30 cm)
porch, deck, or balcony
B = Clearance to window or door that 12 Inches (30 cm) 9 Inches (23 cm)
may be opened
C = Clearance to permanently closed 12Inches (30 cm) 9 Inches (23 cm)
window
D = Vertical clearance to ventilated soffit 18Inches (46 cm) 18 Inches (46 cm)
located above the terminal within a
horizontal distance of 2 Feet (61 cm)
from the center line of the terminal
E = Clearance to unventilated soffit 18Inches (46 cm) 18 Inches (46 cm)
F = Clearance to outside corner 12Inches (30 cm) 12 Inches (30 cm)
G = Clearance to inside corner 12Inches (30 cm) 12 Inches (30 cm)
H = Clearance to each side of center line 3 Feet (91 cm) within a height Clearance in accordance with
extended above meter/regulator 15 Feet (4.5m) above the meter/ local installation codes and the
assembly regulator assembly requirements of the gas supplier
I = Clearance to service regulator 3Feet(91cm) Clearance in accordance with
vent outlet local installation codes and the
requirements of the gas supplier
J = Clearance to nonmechanical air supply 12Inches(30cm) 12Inches(30 cm)
inlet to building or the combustion
air inlet to any other appliance
K = Clearance to a mechanical air supply 6Feet (1.83m) 3 Feet(91 cm) above if within
inlet 10Feet(3m) horizontally
L = Clearance above paved sidewalk or 7 Feet (2.13m) A vent shall not Clearance in accordance with
paved driveway located on public terminate directly above a sidewalk or local installation codes and the
property paved driveway that is located between requirements of the gas supplier
two single family dwellings and
serves both dwellings
M = Clearance under veranda, porch, 12 Inches(30 cm) permitted only if Clearance in accordance with
deck, or balcony veranda, porch, deck, or balcony is local installation codes and the
fully open on a minimum of two sides requirements of the gas supplier
In accordance with the current CSA-B149.1 Natural Gas and Propane Installation Code
In aaccordance with the currentANSI Z223.1 / NFPA54 National Fuel Gas Code
1
2
12

LOCATION
1) The wall furnace must be installed on an outside wall.
2) For most efficient performance, locate furnace as centrally as possible in the area to be heated and where occupants may
move about freely without coming into contact with the grille.
3) 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
Failure to follow these instructions carefully could result in poor performance, property damage, personal
injury or death.
STEP 1. LOCATE VENT OPENING. Locate wall studs and center 9” vent opening a minimum of 22”
for CDV15 or 24-1/8” for CDV25/33 above the floor. To locate furnace at minimum clearance from floor, remove template from
carton and set on floor at location desired. On model CDV15, position template no closer than 1” from either side wall. For
model CDV25/33, position template 1” minimum from a left side wall or 0” from a right side wall. Check outside wall to be sure
there is proper clearances around the vent cap. See Figure 3. Next, mark and cut out the vent openings on both the inside and
outside walls (be sure to keep the holes level). See Figure 5. If a higher location on the wall is desired, raise bottom of template
to desired height, make sure template is level and centered between studs, mark and cut out vent openings.
STEP 2. ROUGH-IN GAS SUPPLY. Install a ½” diameter gas supply line. This line can enter through the
floor, side, or rear wall. For location of gas connection to valve, see Fig. 4. The gas supply line must have an individual manual
shut off valve located outside the cabinet, accessible from the room where the heater is installed. Install a drip leg immediately
ahead of the gas valve and provide a 1/8” N.P.T. plugged tapping, accessible for test gauge connection, immediately upstream of
the gas supply connection. The furnace and the 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 1/2” psig (3.5kPa). The furnace must be isolated from the
gas supply piping system by closing the individual manual shut off valve during any pressure testing of the gas piping system at
test pressures equal to or less than 1/2” psig (3.5kPa).
STEP 3. INSTALLING FURNACE – 5” TO 9” WALLS.Use only the exhaust tube, air intake
tube, wall thimble extension, and vent terminal provided with furnace. Do not attempt to lengthen the exhaust or air intake tubes,
this could cause an imbalance in the furnace resulting in poor performance and pilot outage, see Figure 6. Extend the telescoping
wall thimble extension (surrounding the wall thimble assembly) to approximately 9 inches. Center the wall thimble assembly in
the 9 inch opening and attach to inside wall using eight (8) screws. The wall thimble extension should extend through the
opening and be adjusted so end of wall thimble extension is even with outside wall. Install furnace flush to wall by sliding
exhaust tube and air intake tube through the wall thimble assembly. Secure the furnace to the wall with screws through each of
the four holes in the mounting brackets located on the back of the furnace. These holes are spaced so as to allow the screws to
enter into studs that are on 16 inch centers. On certain types of wall, anchors (not provided) may be required. Slide the vent
terminal onto the exhaust tube and the air intake tube. Secure vent terminal and vent terminal spacer plate to wall providing a
slight downward slope to the vent tubes. This will prevent water from entering. Anchors (not provided) may be required. Caulk
around vent terminal spacer plate with putty provided. See Figure 7. NOTE: Some framing may be necessary to provide a flat
surface for the vent terminal spacer plate to butt against, so rain cannot enter through cut out.
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