COZY VC501C Gas Fired Vented Room Heater Owner’s Manual

COZY VC501C Gas Fired Vented Room Heater

Product Information

The Gas-Fired Vented Room Heater is a residential appliance designed to provide heat in a room. The model numbers available for this heater are VC201C, VC351C, and VC501C. This appliance is equipped with a safety control system designed to protect against improper venting of combustion products. The heater has a coating that provides longer life to the heat exchanger but may smoke slightly upon initial firing. The installation, maintenance, service, troubleshooting & repairs must be performed by a qualified service agency. The unit is not approved for installation in mobile homes, greenhouses, or environments involving dusty, wet, corrosive, or explosive conditions.

Product Usage Instructions

1. Before installation, read the manual carefully and follow the instructions.

2. Check the specifications provided to ensure that the heater is compatible with your home’s gas supply.

3. Ensure that the heater is installed in a location free from flammable vapors and liquids.

4. Provide adequate ventilation in case the heater smokes slightly during initial firing.

5. Ensure that the installation, maintenance, service, troubleshooting & repairs are performed by a qualified service agency.

6. Do not attempt to install the unit in mobile homes or environments involving dusty, wet, corrosive, or explosive conditions as this may create unsafe conditions and invalidate all warranties.

7. Follow the instructions provided in the manual for lighting the heater.

8. Maintain proper burner flame and ensure that the pilot
   adjustment is correct.

9. Keep records of all services performed on the heater for future reference.

WARNING : If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

• Do not store or use gasoline or other flammable 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 supplier’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.
• The coating selected to provide longer life to the heat exchanger MAY SMOKE SLIGHTLY UPON INITIAL FIRING. Provide adequate ventilation if this occurs.
• This appliance is equipped with a safety control system designed to protect against improper venting of combustion products.
• Installation, maintenance, service, troubleshooting & repairs must be performed by a qualified service agency. DO NOT attempt any of these procedures if you are notqualified as this could expose you to property damage, personal injury, or loss of life and will invalidate all warranties.

INSTALLER : Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.
WARNING : This product can expose you to chemicals including epichlorohydrin which is known to the State of California to cause cancer and birth defects and/or other reproductive harm. For information go to www.p65warnings.ca.gov. This unit is NOT to be installed in mobile homes. This unit is for residential use only and is not approved for installation in mobile homes, greenhouses, or environments involving dusty, wet, corrosive, or explosive conditions. Such conditions will invalidate the warranty and may create unsafe conditions.

READ CAREFULLY BEFORE INSTALLING UNIT
These installation instructions are a general guide and do not supersede applicable local codes and ordinances. Before planning or making the installation be sure it complies with all phases of the local heating code. (Or, in the absence of local codes, with the latest edition of National Fuel Gas Code, ANSI.Z223.1, or CAN1-B149).
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, or Canadian Electrical Code CSA-C22.1.
All of the ANSI and NFPA standards referred to in these installation instructions are the ones that were applicable at the time the design of this appliance was certified.

NFPA Standards: NATIONAL FIRE PROTECTION ASSOCIATION 1 Batterymarch Park Quincy, Massachusetts | USA 02169-7471
ANSI & Canadian Standards:
CSA GROUP 178 Rexdale Boulevard, Toronto, Ontario | Canada M9W 1R3
The design of this appliance was certified to comply with the latest edition of ANSI Z21.86 and CSA 2.32.
Installer must leave these instructions with the consumer, have them complete, and return the warranty card.
The State of Massachusetts requires that installation and service of a gas appliance be performed by a plumber or gas fitter licensed in the Commonwealth of Massachusetts. See page 13.

ROOM HEATER SPECIFICATIONS

Your room heater comes packed in a single carton. Before installation, check the rating plate to verify that the Model Number is correct and that the room heater is equipped for the type gas you intend to use.

24”

15-1/4”

| 26”

30”

15-1/4”

| 26”

30”

19-1/4”

Input (BTU / HR)

Gas Inlet / Outlet Size Vent Size

| 20,000

1/2 x 3/8”

3”

| 35,000

1/2 x 3/8”

4”

| 50,000

1/2 x 3/8”

4”

Center of Vent Floor| 16-1/2”| 21-1/2”| 21-1/2”
Approximate Shipping Weight Optional Blower Model| 59 lbs N / A| 85 lbs CHB-3| 102 lbs CHB-3

INTRODUCTION

THIS IS A GAS-FIRED, GRAVITY VENTED ROOM HEATER 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 THIS APPLIANCE. IF YOU DO NOT UNDERSTAND ANY PART OF THESE INSTRUCTIONS, CONSULT LOCAL AUTHORITIES, OTHER QUALIFIED INSTALLERS, SERVICE TECHNICIAN, THE GAS SUPPLIER, OR THE MANUFACTURER.

VENTING
This heater must be connected to a properly installed and maintained venting system. This heater is equipped with a manual reset vent safety shut- off device. Pilot burner outage will occur if the heater is not connected to a vent system. Pilot burner outage may occur due to restriction or blockage in the vent or if connected to a masonry chimney having an area greater than the vent size shown above. This appliance should be vented through a properly sized listed type B vent that has been constructed in accordance with the National Building Code. If a horizontal section of vent is used, it must slope upwards a minimum of ¼ inch per foot of length.
This heater must not be connected to a vent system being used for wood or coal burning appliances. The use of more than one appliance per vent system will most likely cause the vent safety shut-off device to shut off the heater due to the cooling of vent temperatures through the draft diverter of the second appliance. In some situations, the vent safety shut-off may shut down the heater if a large, unlined, masonry chimney is used. Due to low vent temperatures associated with more efficient heaters it may take too long to get the vent action going in a chimney before the shut-off device will shut down the heater. If this is the case, we recommend lining the chimney with the proper size type B vent pipe or type B chimney liner.
WARNING : Do NOT bypass the vent safety shutoff switch. To do so could expose the consumer to property damage, personal injury or possible death. The switch, when activated, will extinguish the burner flame. If the homeowner experiences this problem, the vent system must be checked and corrected.
NOTE : When an existing Category I heater is removed or replaced, the original venting system may no longer be sized to properly vent the attached appliances. The following is a list of possible causes and corrective actions.

POSSIBLE CAUSES

1. Blockage in Vent Pipe

| CORRECTIVE ACTION

1. A) Check vent pipe for blockage, such as bird nest, wasp nest, twigs, leaves, etc.

B) Check that the vent cap is properly installed, not shoved too far down on the vent pipe.

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2. Burner is Over Firing| 2. A) Check the manifold pressure.

B)   Check the rate      NOTE: This appliance was orificed for elevations up to 2,000 feet. When installed at higher elevations refer to orifice chart (on page 9) in main burner orifice section of instructions for proper orifice size and re-orifice accordingly.

3.            Improper Vent System

A.    Vent Too Short

__

__

__

B.    Restriction in Vent System Caused by Offsets

__

__

C.    Incorrect Vent Pipe

| 3.    Correct Vent System

A) The vent should not terminate less than 5 feet above the drafthood connection. A gas vent extending through an exterior wall shall not terminate adjacent to the wall or below eaves or parapets. Also, the top of the vent must be at least 2 feet above all obstacles within a 10 feet radius, including the roof. See Figure A (on page 5).

B)     All type “B” vent shall extend in a generally vertical direction with offsets not exceeding 45 degrees, except that a vent system having not more than one 60 degree offset may be allowed. Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal run of a vent plus the horizontal vent connector shall be not greater than 75 percent of the vertical height of the vent. Any offsets used should be as far above the drafthood as possible to allow the venting action to begin before any restriction is encountered.

C)    Use listed “B” type vent pipe. Do not use transite or any other type of ceramic pipe for venting. Do not use single wall pipe for vent or vent connector.

4. Loose Connections on the Vent Safety Wiring Harness| 4. Check the connection on both the switch and the gas valve. Tighten if necessary.

WARNING : CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death.

The following steps shall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation:

1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code, CSA B149.1 and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition.
3. As far as practical, close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other spaces of the building.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not connected to the venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they are operating at maximum speed. Do not operate a summer exhaust fan.
6. Follow the lighting instructions. Place the appliance being inspected into operation. Adjust the thermostat so appliance is operating continuously.
7. Test for spillage from draft hood equipped appliances at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle.
8. If improper venting is observed during any of the above tests, the venting system must be corrected in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or Natural Gas and Propane Installation Code, CSA B149.1.
9. After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-fired burning appliance to their previous conditions of use.

CONNECTING THE VENT INTO AN EXISTING CHIMNEY

GAS SUPPLY
This heater must be connected to a gas supply capable of supplying the full rated capacity. Provide a 1/8 inch N.P.T. plugged tapping, accessible for test gauge connection, immediately upstream of the gas supply connection to the appliance.

MINIMUM INLET PRESSURE

(For purpose of input adjustment) :

|

4.5” w.c.

|

11.0” w.c.

MAXIMUM INLET PRESSURE

(Must NEVER Exceed):

| 7” w.c.| 14” w.c.

NORMAL MANIFOLD PRESSURE:

|

3.5” w.c.

|

10.0” w.c.

The gas supply piping should be sized in accordance with ANSI Z223.1 National Fuel Gas Code.
If the outlet pressure of the gas valve must be adjusted, this must be done by a qualified service technician using proper tools and instruments.
Check all connections with soapy water for possible gas leaks. Never use a match, candle or other ignition source. It is recommended that pipe compound which is resistant to the action of liquefied petroleum gases be used. Do not use Teflon tape or Teflon impregnated compound.

Fig. D: GAS SUPPLY

LOCATION AND SPECIAL PRECAUTIONS

• 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 temperature 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, guard, or casing top removed for servicing a room heater must be replaced prior to operating the appliance.
• 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.
• For purpose of identifying the sides of the heater. When you are facing the front of the heater the right side has the access door and the left side is solid.
• If heater is installed in a residential garage, the burner and pilot must be above 18”. Locate or protect heater so it cannot be damaged by a moving vehicle.

The appliance and its individual shutoff valve must be disconnected from the gas supply piping during any pressure testing of that system at test pressure in excess of ½ psig.
The appliance must be isolated from the gas supply piping 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 ½ psig.

COMBUSTION AND VENTILATION AIR
When installed, this gas appliance must be provided with fresh air for combustion, ventilation, and dilution of hot flue gases. The minimum required volume of the area where the appliance is installed must be 50 cubic feet per 1,000 btu/hr.
If installed in an area of the home that is considered an unconfined space, the natural infiltration of air around windows and doors will be adequate. If the area is considered a confined space (less than 50 cubic feet per thousand btu), fresh air can be supplied by providing two permanent openings into adjoining rooms. Each opening shall have a minimum free area of one square inch per 1,000 btu per hour of the total input rating of all gas appliances in the confined space, but not less than 100 square inches. One of the openings shall be within 12 inches of the ceiling and one within 12 inches of the floor. See Figure E-1 (to the right).
If the home is of unusually tight construction (new and remodeled homes), free air must be supplied through opening(s) to the outdoors. This can be accomplished by providing 2 permanent openings, one commencing within 12 inches of the ceiling and one within 12 inches of the floor. These openings shall communicate directly with the outdoors, or spaces that communicate freely with the outdoors, such as a ventilated attic and crawl space through galvanized or equivalent corrosion-resistant ducts. Exception: Unobstructed stud and joist spaces are acceptable ducts provided that not more than one fire block is removed. Special provisions must be taken to insure that these stud and joist spaces cannot be blocked with insulation or other objects. Each of these openings using vertical ducts shall have a minimum free area of one square inch per 4,000 btu/hr of total input rating of all gas appliances. See Figures E-2 (to the right) and E-3 (below). If horizontal ducts are used, the minimum free area shall be one square inch per 2,000 btu/hr of total input rating of all gas appliances.
Fresh make-up air can also be provided through a duct to one permanent opening commencing within 12 inches of the ceiling. The minimum free area of this opening shall be one square inch per 3,000 btu/hr of the total input rating of all gas appliances but not less than the sum of the areas of all vent connectors in the space. See Figure E-4 (below).
When calculating the amount of fresh air needed you must include make-up air requirements for the operation of exhaust fans, kitchen ventilation systems, clothes dryers, and fireplaces.
Additional information can be found in the latest edition of ANSI Z223.1
(National Fuel Gas Code).
DRAFT DIVERTER
The draft diverter must be installed in the same atmospheric pressure zone as the combustion air supply for the main burner.

CLEARANCES

If the area where the appliance is to be installed contains carpeting, tile, or combustible materials, other than wood flooring, the appliance shall be installed on a metal plate (stoveboard), a wood panel, or other non- combustible materials. The use of ceramic or quarry tile is acceptable and provides an appealing surface that is easily cleaned. This material is to extend 2 inches from each side and 12 inches from the front. It is advisable to extend this to the wall behind the appliance.

Clearances to Combustibles are as Follows:

• From jacket to adjacent side walls, 2” on the 20/35, and 6” on the 50. Maintain adequate clearance on right side for accessibility.
• From rear surface vertical vent pipe to rear walls – 6”.
• From rear of unit to rear wall, 13” on 20/35, and 14” on the 50.
• From top of heater to ceiling, 34” on the 20/35, and 31” on the 50.
• From top of heater to any overhanging projections such as a mantle or window sill is 22” on the 20/35, and 19 inches on the 50 model, with a maximum horizontal extension of 18 inches.

The clearances around the air opening into the combustion chamber must be maintained, and the burner must be kept clean.
Do not permit dust or dirt to accumulate here. The other clearances previously mentioned must be maintained.
There must be adequate room provided and maintained around the heater for accessibility and for the flow of combustion and ventilation air.

CAUTION : THERE MAY BE MOMENTARY AND SPASMODIC ORANGE FLASHES IN THE FLAME. This is caused by the burning of air borne dust particles and is not to be confused with the yellow tipping which is a stable or permanent situation when there is insufficient primary air.

PILOT ADJUSTMENT

The pilot flame can be observed by opening the pilot lighting hole cover. The pilot flame should surround the top 3/8 to ½ inch of the pilot generator (See Figure H-2).
If the flame needs adjusting, first locate the pilot adjustment screw cap and remove. Adjustment screw is underneath (See Figure H-1).

• To increase the flame, turn the pilot adjustment screw counterclockwise
• To decrease the flame, turn the screw clockwise.

NOTE : The pilot is unregulated. If incoming line pressure is more than 7” w.c. Natural Gas or 11” w.c. for Propane Gas, the pilot flame size should be decreased.
Fig. H-1

MAIN BURNER ORIFICE
This appliance was shipped from the factory with an orifice sized to give the correct gas input using the gas for which the heater was equipped. There may be local conditions, such as variation in gas supply pressure or BTU content of the gas, which may be cause for a change in the orifice. The gas company supplying the fuel or the installing contractor should check the gas input rate.
If the rate exceeds the “BTUH INPUT” on the rating plate by 5%, the orifice must be replaced with a smaller orifice by a qualified service technician to reduce the input to the rating plate value.
The input rate will need to be adjusted for elevation above 2,000 Feet. See the Specific Elevations chart (to the right) to determine the correct orifice size for your Model Number and elevation. These orifice sizes are based on a heating value of 1020 for Natural Gas and 2500 for Propane Gas.
CAUTION : As elevation increases, derating is necessary for the safe and proper operation of this heater. Do not increase the Btu input rate by increasing the orifice size or gas pressure. Allow for elevation derating when sizing gas heating equipment.
Fig. I: Proper Burner Flame Specific Elevations

Model No.| 0 to

2,000’

| 2,000’ –

4,000’

| 4,000’ –

6,000’

| 6,000’ –

8,000’

| 8,000’ –

10,000’

---|---|---|---|---|---
NATURAL GAS| | |
VC201| 45| 47| 48                   49| | 50
VC351| 35| 37| 38                   40| | 42
VC501| 30| 31| 31                   32| | 35
PROPANE GAS| | | |
VC202| 1.3mm| 55| 56                   56| 57
VC352| 1.65mm| 53| 53                   54| 54
VC502| 47| 49| 49                   50| 51
ORDER KIT #49820| 45-1 High Altitude| Kit|

LIGHTING INSTRUCTIONS

MODELS: VC201C / VC351C/ VC501C

WARNING : If you do not follow these instructions exactly, a fire or explosion may result causing  property damage, personal  injury or loss of life.

FOR YOUR SAFETY READ BEFORE LIGHTING

1. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly.

2. 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 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.

3. 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.

4. 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.

LIGHTING INSTRUCTIONS

1. STOP! Read the information on the safety label.

2. Turn temperature control knob to “OFF” or to it’s lowest position.

3. Depress and turn gas control knob clockwise to “OFF” position.

4. 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.

5. Open casing door and pilot lighting hole cover.

6. Find pilot. (Follow metal pilot tube from gas control).

7. Locate red piezo ignitor button on top of heater.

8. Turn gas control knob counterclockwise to “PILOT”.

9. Push in gas control knob and hold in. Immediately begin a series of pushing and releasing the red piezo ignitor button, while observing the pilot. Continue to spark until pilot is lit. Continue to hold the gas control knob in for about one (1) minute after the pilot is lit. Release the gas control knob and it will pop back up. Pilot should remain lit. If pilot goes out, repeat steps 3 thru 9.
   • If knob does not pop up when released, STOP & 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” & call your service technician or gas supplier.

10. Close pilot lighting hole cover and casing door.

11. Turn gas control knob counterclockwise

12. Turn temperature control knob to desired setting.

TURNING OFF GAS TO APPLIANCE

1. 1. Turn the temperature control knob to it’s lowest setting.
2. 2. Push in gas control knob slightly and turn clockwise 2. Push in gas control knob slightly and turn clockwise

MAINTENANCE

THIS IS A GAS-FIRED APPLIANCE, KEEP THE AREA CLEAR OF GASOLINE AND OTHER FLAMMABLE VAPORS & LIQUIDS. ALL COMBUSTIBLE MATERIAL MUST BE KEPT CLEAR OF THIS AREA.
Have a qualified service technician check the burner periodically. Remove and clean if necessary.

CLEANING – To clean the front casing of your heater, it is only necessary to use a soft cloth. Light dust can be removed in this way. To obtain a polish or gloss, use a little light machine oil on the cloth. Do not use metal polish or cleaning solution. The burner ports should be kept free from lint and dust.

CLEANING OF COMBUSTION CHAMBER
The combustion chamber of your console heater should never need to be cleaned if proper burner adjustment and gas pressures are maintained. However, if an unusual circumstance should occur, the following procedure should be followed in cleaning your combustion chamber.

1. Turn off gas supply to heater at manual valve in supply line to heater.
2. Disconnect heater at ground joint union ahead of main gas valve.
3. Remove main control and orifice assembly.
4. Remove burner.
5. Remove combustion chamber.
6. Using a scraper, scrape inside of a primary combustion chamber. This should be area of heaviest accumulation of carbon.
7. Remove plug bottom located in bottom rear of second combustion chamber. Using a bottlebrush, clean inside of this chamber. Shake residue out the clean-out hole.
8. Clean the rear chamber by using bottlebrush through the vent tube openings.
9. Replace combustion chamber, burner and control. Check all gas piping for leaks before lighting heater.

Repair service must be performed by a qualified service technician. The heater should be inspected before initial use. An annual cleaning of control compartment and safety performance check must be made by a qualified service technician. More frequent cleaning may be required when exposed to the excessive lint conditions due to carpeting and bedding material, etc. It is imperative that the control compartment, burners, and circulating air passageways of the heater be kept clean. Any safety screen, casing top, or guard removed for servicing the heater must be replaced prior to operating heater.
If the venting system is not maintained in proper operating condition, the vent safety shutoff will not allow heater to operate. Periodic examination of the entire venting system as a routine part of the safety performance check must be performed on an annual basis.
It is advised that the pilot and main burner flames be checked at least twice during the heating season for any changes in flame characteristics. See Figures H-2 & Figure I (on page 9).

TROUBLESHOOTING CHART ( FOR QUALIFIED SERVICE TECHNICIAN ) – MAIN BURNER

Flame Too Large| 1.   Defective operator section of gas valve.

2.   Burner orifice too large.

3.   Pressure regulator malfunction.

| 1.   Replace complete valve.

2.   See orifice chart to determine the correct size for your Model Number & elevation.

3.   Regulator must be adjusted by a qualified serviceman using proper tools

and instruments.

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Noisy

Flame

| 1.   Noisy pilot.

2.   Burr in orifice

(if it whistles or resonates).

3.   Excessive gas input.

| 1.   Reduce pilot gas with adjusting screw on combination gas. (See Fig. H-1).

2.   Remove burr or replace orifice (Do not enlarge orifice).

3.   See “Flame Too Large”, above.

Yellow Tip

Flames

(Some yellow tipping on Propane Gas is permissible)

| 1.   Clogged main burner ports.

2.   Clogged draft hood.

3.   Linted up air shutter.

| 1.   Clean main burner ports (Do not enlarge ports).

2.   Clean draft hood.

3.   Check for dust or lint at air mixer opening and around the shutter.

Floating Flame| 1. Blocked venting.| 1. Clean flue passageways to relieve blockage.
Gas Odor| 1.   Chimney or flue obstruction.

2.   Drafts around heater.

3.   Gas leak.

| 1.   Clean flue.

2.   Eliminate drafts.

3.   Shut off gas service immediately. Check piping. Call gas company. See “For

Your Safety” (Page 10) , and “Gas Supply” (Page 6).

Delayed

Ignition

| 1.   Pilot flame too small.

2.   Burner ports clogged near pilot.

3.   Low gas pressure.

4.   Pilot decreases in size when main burners come on.

5.   Drafts around unit.

6.   Pilot lighter door open causing

disturbance of pilot flame.

7.   Improper venting.

8.   Pressure regulator malfunction.

| 1.   Check pilot orifice, clean, increase pilot gas flow if necessary by adjusting at

combination control valve (See Fig. H-1 on page 9).

2.   Clean burner ports (do not enlarge ports).

3.   Check gas supply pressure. See “Gas Supply” (Page 6).

4.   Supply piping is inadequately sized. Consult local gas utility or competent installer.

5.   Eliminate drafts.

6.   Close pilot lighter door.

7.   See “Venting” (Pages 3-5).

8.   Regulator must be adjusted by a qualified serviceman using proper tools and

instruments.

Failure to Ignite| 1.    Main gas off.

2.    Defective gas valve.

| 1.   Open all manual gas valves.

2.   Replace gas valve.

Condensation

of Water Vapor

| 1. Improper venting.| 1. See the “Venting” section (Pages 3-5).
Burner Won’t Turn Off| 1.   Defective or sticking automatic valve.

2.   Excessive gas pressure

(The supply gas pressure must not exceed 1/2 psi or 14” water column).

| 1.   Clean or replace valve.

2.   To correct this situation contact the utility supplying the gas. See the “Gas Supply” section (Page 6).

Incorrect Gas Input| 1.   Gas input not checked.

2.   Clogged orifice.

3.   Pressure regulator.

4.   Thermostat capillary tube damaged.

| 1.   Re-check gas input. See “Gas Supply” section (Page 6).

2.   Check orifices for clogging. If clogged, clean out the hole carefully with a

smooth wood toothpick. (Do not in any way enlarge or distort it).

3.   Regulator must be adjusted by a qualified serviceman using proper tools and

instruments.

4.   Replace bulb control switch.

Not Enough Heat| 1.   Heater undersized.

2.   Temperature dial set too low.

3.   Incorrect gas supply pressure.

| 1.     This is especially true when a dwelling or room is enlarged. Have the heat loss calculated and compare to the heater output (70% of input). Your

gas company or installer can supply you with this information. If heater is undersized, replace with correct size unit.

2.     Raise setting of temperature dial. See “Lighting & Shutting Down Instructions.” (See page 10).

3.     Check gas supply pressure and regulator pressure as outlined above.

Too Much

Heat

| 1.     Temperature dial set too high.

2.     Combination control valve sticks open.

| 1. Lower setting of temperature dial. See “Lighting & Shutting Down Instructions” on page 10.

2.   Replace combination control valve.

TROUBLESHOOTING CHART – AUTOMATIC PILOT & VALVE

Burner Won’t

Light

| 1.   Pilot flame too large or too small.

2.   Defective combination control valve.

| 1. Re-adjust pilot flame using adjustment on combination control valves (See

Fig. H-1 & H-2 on page 9).

2.   Replace valve.

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Pilot Outage| 1.   Dirt in pilot orifice.

2.   Pilot lighter door open.

3.   Defective automatic pilot section in combination control valve.

4.   Defective pilot generator.

5.   Vent safety shut off system.

| 1.   Clean pilot orifice with air or solvent, do not ream.

2.   Close pilot lighter door.

3.   Replace combination control valve.

4.   Replace pilot generator.

5.   See the “Venting” section (Pages 3-5).

Pilot Will

Not Stay Lit When Control Knob is Released

| 1.   Pilot flame too large or too small.

2.   Defective pilot generator.

3.   Defective gas valve.

4.   Loose connections at spill switch or ECO on gas valve.

| 1. Re-adjust pilot flame using adjustment on combination control valves ( See

Fig. H-1 & H-2 on page 9).

2.   Replace pilot generator.

3.   Replace gas valve.

4.   Tighten connections.

INSTALLATIONS IN THE STATE OF MASSACHUSETTS

All installations in the State of Massachusetts must use the following requirements when installing, maintaining or operating direct-vent propane or natural gas-fired space heaters.
For direct-vent appliances, mechanical-vent heating appliances or domestic hot water equipment, where the bottom of the vent terminal and the air intake is installed below four feet above grade the following requirements must be satisfied:

1. If there is not one already present, on each floor level where there are bedroom(s), a carbon monoxide detector and alarm shall be placed in the living area outside the bedroom(s). The carbon monoxide detector shall comply with NFPA 720 (2005 Edition).

2. A carbon monoxide detector shall be located in the room that houses the appliance or equipment and shall:

   • Be powered by the same electrical circuit as the appliance or equipment such that only one service switch services both the appliance and the carbon monoxide detector.

   • Have battery back-up power;

   • Meet ANSI/UL 2034 Standards and comply with NFPA 720 (2005 Edition); and

   • Have been approved and listed by a Nationally Recognized Testing Laboratory as recognized under 527 CMR.
     A CARBON MONOXIDE DETECTOR SHALL:

   • Be located in the room that houses the appliance or equipment;

   • Be either hard-wired or battery powered or both; and

   • Shall comply with NFPA 720 (2005 Edition).

3. A product-approved vent terminal must be used, and if applicable, a product-approved air intake must be used. Installation shall be in strict compliance with the manufacturer’s instructions. A copy of the installation instructions shall remain with the appliance or equipment at the completion of the installation.

4. A metal or plastic identification plate shall be mounted at the exterior of the building, four feet directly above the location of vent terminal. The plate shall be of sufficient size to be easily read from a distance of eight feet away, and read “Gas Vent Directly Below”.

CHB-3 BLOWER INSTALLATION – ( OPTIONAL )
This kit must be installed by a qualified installer or service technician.
CAUTION : Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

1. STEP 1. Run black wire & white wire that comes from bottom of junction box down through the heat shield. See Figure K-1.
2. STEP 2. Insert junction box into opening in back of heater. Attach using four #8×1/2” black screws provided. See Figure K-1.
3. STEP 3. Attach fan switch to fan switch bracket using two #8×1/2” plated, Phillip head screws provided. The 2” flange on the bottom of bracket and terminals on the fan switch should be toward the back of the heater when properly installed.
4. STEP 4. Locate the two engagement holes in base of heater. On a 35,000 Btu heater these holes are approximately 6-1/2” from the back edge and right and left holes are 5-1/4” and 7-1/4” respectfully from the right side (as viewed from back of heater). On a 50,000 Btu heater the holes are approximately 10-3/4” from the back edge and right and left holes are 5-3/8” and 7-3/8” respectfully from the right side. Attach fan switch bracket to base using two #8×1/2” hex head screws provided. This will require a ¼” socket and ratchet. See Figure K-1.
5. STEP 5. Locate the blower opening and mounting tab on the base of the heater. Insert the front flange of the blower housing under the mounting tab, lower the back of the blower down onto the base aligning the clearance holes in the blower base with the engagement holes in the heater base. Secure the blower to the base with two #8 screws provided. See figure K-1.
6. STEP6 : Connect black wire from junction box to right fan switch terminal. See Figure K-2.
7. STEP 7: Connect white wire from junction box to white fan motor wire. See Figure K-2.
8. STEPb 8 : Connect black wire from fan motor to left fan switch terminal. See Figure K-2.
9. STEP 9 : Turn variable speed control switch clockwise (as viewed from front of unit) to “OFF”.
10. STEP 10. Plug power cord into 115 V. grounded receptacle.
11. STEP 11. Turn variable speed control switch counterclockwise (as viewed from front of unit) from “OFF” to “HIGH”. Blower will now cycle on automatically when the switch temperature is met after the main burner comes on. The blower will continue to run for a short period after the main burner goes off. Blower speed can be adjusted by setting the variable speed control switch between high and low.

WARNING : This appliance is equipped with a three-prong (grounding) plug for your protection against shock hazard and must be plugged directly into a properly grounded three-prong receptacle. Do not cut or remove the grounding prong from this plug.

TSK WALL STAT KIT – ( OPTIONAL )
( VC-C Dexen Valve Series ) | WALL THERMOSTAT INSTALLATION INSTRUCTIONS
This kit must be installed by a qualified installer or service technician.
Your heater can be re-wired to operate with a millivolt wall thermostat by your qualified installer/service person. See wiring diagram below for correct wiring. NOTE: Do not disconnect the wire from the blocked flue switch to the “TH” terminal on the gas valve.

1. STEP 1. Turn temperature control knob to “OFF” or lowest setting.
2. STEP 2. Turn gas valve control knob to “OFF”.
3. STEP 3. Disconnect wire leading from Part #80180 (Bulb Control Switch) from valve.
4. STEP 4. Cut the remaining wire leading from Part #80180 (Bulb Control Switch) to the blocked flue switch, leaving its end connected to the blocked flue switch and leaving enough length to reach the gas valve. Strip 1/2” of the insulation from the cut end of the wire.
5. STEP 5. Connect one leg of thermostat wire to the “TH” terminal on the gas valve.
6. STEP 6. Connect second leg from the thermostat to the stripped wire coming from the blocked flue switch. Secure this connection inside the heater cabinet.
7. STEP 7. Secure both red wires from blocked flue switch inside heater cabinet. Make sure none of the wires have enough slack to lay against the heat exchanger or draft hood.
8. STEP 8. Remove lighting instructions P/N 91245, 91246, 91247 from back of heater and replace with P/N 91242, 91243, 91244 lighting instructions supplied in TSK Kit.
9. STEP 9. Follow lighting instructions to place heater in operation

VENTED CONSOLE – ( PARTS LIST )
VC-C Closed Front Circulators & CHB3 Blower | Specifications are subject to change without notice.
ATTN : Contractors and Qualified Service Technicians
We only sell parts through our wholesalers. For prompt parts service, contact the wholesaler from which you purchased your Cozy heater.
NOTICE : When ordering any component in the control train assembly, specify either Dexen, Honeywell, or Robertshaw components. HOW TO PROPERLY ORDER PARTS:
In addition to the part description and numbers, please be prepared to provide:

• Model Number
• Serial Number
• Type of Gas Used

This information can be found on the rating plate that is attached to the heater.

REF. #| PART DESCRIPTION| PART NO.| PART NO.| PART NO.
---|---|---|---|---
1| HOUSING , VC Service| 1017474| 1017475| 1017476
2| DOOR , Small Service| 1017477| 1017477| 1017478
3| KNOB , Phenolic Fluted-Rim| 1017451| 1017451| 1017451
4| U-NUT , Clip-on No-Slip Pk25| 1017452| 1017452| 1017452
5| INSULATION , Foil Faced, 8.5 x 6.5| 1017286| 1017286| 1017287
6

7

8

9

10

| BRACKET , Door

SCREW , 8 x 1/2 Pan, Teks Pt. (Qty: 2)

INSULATION , Foil Faced

BRACKET

INSULATION , Foil Faced

| 1017285

50605

80281

1017227ASM

80280

| 1017285

50605

80286

1017282ASM

80297

| 1017285

50605

80289

1017282ASM

80297

11

12

13

| BRACKET (Qty: 2)

BRACKET

INSULATION , Foil Faced

| 1017281ASM

1017227ASM

80281

| 1017283ASM

1017284ASM

80285

| 1017283ASM

1017284ASM

80288

NOTE : Parts & schematic drawings on current models are shown at: cozyheaters.com Specifications subject to change without notice.

REF. #| PART DESCRIPTION| PART NO.| PART NO.| PART NO.|
---|---|---|---|---|---
14| PIEZO IGNITOR| 80016| 80016| 80016|
15| CASING , Top Assembly| 45052-10| 45552-10| 46402-10
16| GROMMET , Control Rod| 80010| 80010| 80010
17| REMOTE MOUNTING BRACKET| 45062| 45062| 45062
18| BULB CONTROL SWITCH (Cotherm)| 80180| 80180| 80180
19| HEAT EXCHANGER , Closed Front| 45200| 45675| 46500-K|
20| REAR LEG , Heat Exchanger| N/A| 45760| 45760
21| GUSSET| 45195-10 __ 45195-10| __   *45195-10|
22| CASING BASE , Assembly| 45175| 45640| 46460|
23| LEG LEVELLERS, 4 per heater| 80009| 80009| 80009
24| DRAFT DIVERTER , Assembly| 45300| 45783| 46558|
25| CASING , Back Assembly| 45150| 45612| 45612
26| SWITCH , Vent Safety Spill / VC| 80102| 80106| 84166
27| WIRING HARNESS| 80212| 80213| 80213
28| VALVE , 6003 Natural Gas Valve, Dexen| 84085| 84085| 84085
29| VALVE, Support Bracket| 45336| 45336| 45336|
30| MANIFOLD| 80133| 80133| 80135
31| ORIFICE NUT| 80024| 80024| 80024
32| BURNER ORIFICE , Natural Gas| 80025| 80058| 80119
33| BURNER , Steel| 80123| 80124| 80125
34| PILOT ASSY. 0.140.514 Nat. w/ Electrode| 80062| 80062| 80062|
35| PILOT GENERATOR 23”| P043801| P043801| P043801
36| LIGHTING HOLE COVER , Pilot| 45332| 45332| 45332
37| BURNER MOUNTING PLATE , Assembly| 45817| 45817| 45817
38| PILOT TUBING Assy. w/Fittings 24”| 70012| 70012| 70012
39

50

| PIEZO WIRE

BULB CONTROL SWITCH KNOB

| 80128

1017125

| 80128

1017125

| 80128

1017125

VENTED CONSOLE – ( PARTS LIST )
VC-C Closed Front Circulators & CHB3 Blower | Specifications are subject to change without notice.
ATTN : Contractors and Qualified Service Technicians. We only sell parts through our wholesalers. For prompt parts service, contact the wholesaler from which you purchased your Cozy heater.
NOTICE : When ordering any component in the control train assembly, specify either Dexen, Honeywell, or Robertshaw components.

HOW TO PROPERLY ORDER PARTS:
In addition to the part description and numbers, please be prepared to provide:

• Model Number
• Serial Number
• Type of Gas Used

This information can be found on the rating plate that is attached to the heater.

NOTE : Parts & schematic drawings on current models are shown at: cozyheaters.com
Specifications subject to change without notice.

LIMITED WARRANTY

The manufacturer, Williams Comfort Products, warrants this Cozy wall furnace or heater to the original purchaser under the following conditions: ANY WARRANTY CONSIDERATIONS ARE CONTINGENT ON INSTALLATION BY A QUALIFIED INSTALLER (CONTRACTOR). SELF-INSTALLATION IS PROHIBITED AND WILL INVALIDATE YOUR WARRANTY.

LIMITED ONE-YEAR WARRANTY

1. Any part thereof which proves to be defective in material or workmanship within one year from date of original purchase for use will be replaced at the Manufacturer’s option, FOB to its factory.
2. No liability is assumed by the Manufacturer for removal or installation labor costs, nor for freight or delivery charges.

LIMITED EXTENDED WARRANTY

1. In addition to the above limited one year warranty on the complete unit, any combustion chamber which burns out or rusts under normal installation, use and service conditions during a period of nine years following expiration of the one-year warranty period will be exchanged for a like or functionally similar part.
2. No liability is assumed by the Manufacturer for removal or installation labor costs, nor for freight or delivery charges.

LIMITATIONS

1. 1. THIS LIMITED WARRANTY IS THE ONLY WARRANTY MADE BY THE MANUFACTURER, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE ARE LIMITED TO THE SAME ONE YEAR TERM AS THE EXPRESS WARRANTY. UNDER NO CIRCUMSTANCES SHALL THE MANUFACTURER BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, SPECIAL OR CONTINGENT DAMAGES OR EXPENSES ARISING DIRECTLY OR INDIRECTLY FROM ANY DEFECT IN THE PRODUCT OR ANY COMPONENT OR FROM THE USE THEREOF. THE REMEDIES SET FORTH HEREIN ARE THE EXCLUSIVE REMEDIES AVAILABLE TO THE USER AND ARE IN LIEU OF ALL OTHER REMEDIES. Some states do not allow limitation on how long an implied warranty lasts, and some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you.
2. This warranty does not include any charge for labor or installation.
3. This warranty does not extend to painted surfaces or to damage or defects resulting from accident, alteration, misuses or abuse or improper installation.
4. This warranty does not cover claims which do not involve defective workmanship or materials.

DUTIES OF THE CONSUMER

1. The heating equipment must be installed by a qualified installer and operated in accordance with the installation and homeowner’s instructions furnished with the equipment.
2. Any travel, diagnostic costs, service labor, and labor to repair the defective unit will be the responsibility of the owner.
3. A bill of sale, canceled check, payment record or permit should be kept to verify purchase date to establish the warranty period.
4. Have the installer enter the requested information in the space below.

GENERAL

1. The manufacturer neither assumes nor authorizes any person to assume for it any other obligation or liability in connection with said equipment.
2. Service under this warranty should be obtained by contacting your dealer. Provide the dealer with the model number, serial number, and purchase date verification.
3. If, within a reasonable time after contacting your dealer, satisfactory service has not been received, contact: Customer Service Department, 250 West Laurel Street, Colton, CA 92324 for assistance.
4. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.

TO REGISTER YOUR FURNACE: GO ONLINE TO THE COZY HEATERS WEBSITE AT: www.cozyheaters.com/warranty-registration/
COZY HEATING SYSTEMS 250 WEST LAUREL STREET – COLTON, CA 92324
INSTALLER: Leave this manual with the appliance.
CONSUMER : Keep this manual for future reference.
Installation, maintenance, service, troubleshooting & repairs must be performed by a qualified service agency. DO NOT attempt any of these procedures if you are not qualified as this could expose you to property damage, personal injury, or loss of life and will invalidate all warranties.
www.cozyheaters.com | 888-444-1212 | 250 West Laurel Street, Colton CA 92324 USA Subject to change without notice | © 2023

References

• Home - Cozy Heating Systems LLC
• Home - Cozy Heating Systems LLC
• Register Your Furnace Product - Williams Comfort Products
• p65warnings.ca.gov
• Products - Cozy Heating Systems LLC

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