Vanguard Heating Electric Heater GVB35P User Manual

®
VENTED PROPANE  
GAS HEATERS  
OWNER’S OPERATION AND INSTALLATION MANUAL  
Models: GVB35P and GVB50P  
WARNING: If the information in this manual  
is not followed exactly, a fire or explosion  
may result causing property damage, per-  
sonal injury, or loss of life.  
WARNING: Improper installation,  
adjustment, alteration, service, or  
maintenance can cause property  
damage, personal injury or loss of  
life. Refer to this manual for cor-  
rect installation and operational  
procedures. For assistance or  
additional information consult a  
qualified installer, service agency,  
or the gas supplier.  
FOR YOUR SAFETY  
— 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.  
• Immediatelycallyourgassupplierfrom  
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 per-  
formed by a qualified installer, service  
agency, or the gas supplier.  
Save this manual for future reference.  
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WARNINGS  
SAFETY  
INFORMATION  
IMPORTANT: Read this owner’s manual carefully and completely be-  
fore trying to assemble, operate, or service this heater. Improper use of  
thisheatercancauseseriousinjuryordeathfromburns,fire,explosion,  
electrical shock, and carbon monoxide poisoning.  
DANGER  
Carbon monoxide poisoning may lead to death!  
Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning  
resemble the flu, with headaches, dizziness, or nausea. If you have these signs, the  
heater may not be operating or venting properly. Get fresh air at once! Have heater  
or heater venting system serviced. Some people are more affected by carbon  
monoxide than others. These include pregnant women, people with heart or lung  
disease or anemia, those under the influence of alcohol, and those at high altitudes.  
Propane Gas: Propane gas is odorless. An odor-making agent is added to propane  
gas. The odor helps you detect a propane gas leak. However, the odor added to  
propane gas can fade. Propane gas may be present even though no odor exists.  
Make certain you read and understand all Warnings. Keep this manual for reference.  
It is your guide to safe and proper operation of this heater.  
1. A qualified service person must install heater and venting system.  
2. Use only propane gas. Do not convert heater to use different fuel type.  
3. Do not place propane supply tank(s) inside any structure. Locate propane supply  
tank(s) outdoors.  
4. If you smell gas  
• Shut off gas supply.  
• 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.  
5. This heater must have fresh air for proper operation. If not, poor fuel combustion  
and improper venting of flue gases will result. Carbon monoxide poisoning from  
backed-up flue gases could occur. The State of California lists carbon monoxide  
asareproductivetoxinunderProposition65.ReadtheinstructionsunderFreshAir  
for Combustion and Ventilation, pages 16 through 19 for complete information.  
6. Never install the heater  
• in a mobile home or a recreational vehicle.  
• where curtains, furniture, clothing, or other flammable objects are less than 48  
inches from the front, 53 inches from top, or 12 inches from right side and 6  
inches from left side and back of heater.  
• directly on carpeting, tile, or other combustible materials other than wood  
flooring. Place heater on metal or wood panel extending the full width and  
depth of heater.  
• as a fireplace insert.  
• in high traffic areas.  
• in windy or drafty areas.  
Continued  
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SAFETY  
WARNINGS Continued  
INFORMATION  
7. Provide the following minimum heater clearances from combustibles (as viewed  
from the front of heater):  
Continued  
Front: 48 inches  
Back: 6 inches  
Top: 53 inches  
Right Side: 12 inches  
Left Side: 6 inches  
8. Do not run heater  
• where flammable liquids or vapors are used or stored  
• under dusty conditions  
9. Never place clothing or any flammable objects on the heater or venting system.  
10. Heater and venting system surfaces are very hot during operation. Keep children  
and adults away from hot surfaces to avoid burns or clothing ignition. Carefully  
supervise young children when they are in the same room as heater. Heater will  
remain hot for a time after shutdown. Let surface cool before touching.  
11. Do not use heater as a cooking device.  
12. Do not alter heater or its controls. Any change may create a safety hazard.  
13. Turn off heater and unplug (if equipped with blower) and let cool before  
servicing. Unless you need gas supply for testing, shut off manual shutoff valve  
before servicing. Only a qualified service person should service and repair heater  
and venting system.  
14. Replace any safety screen or guard removed for servicing before running heater.  
15. Do not use heater if any part has been under water. Immediately call a qualified  
service person to inspect the heater and to replace any part of the control system and  
any gas control which has been under water.  
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PRODUCT  
IDENTIFICATION  
Control  
Knob  
Ignitor  
Button  
Lower Front  
Access Panel  
Figure 1 - Vented Propane Gas Heater  
Draft Hood  
Outlet for  
Venting  
System  
Control  
Valve  
Figure 2 - Vented Propane Gas Heater, Rear View  
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Install and use heater with care. Follow all local codes. In the absence of local  
codes, use the latest edition of the following:  
LOCAL CODES  
UNPACKING  
• National Fuel Gas Code ANSI Z223.1, also known as NFPA 54 *  
• National Electrical Code ANSI/NFPA 70 *  
• National Standard of Canada CAN1-B149 **  
*Available from: American National Standards Institute, Inc., 1430 Broadway  
New York, NY 10018; National Fire Protection Association, Inc., Batterymarch  
Park, Quincy, MA 02269.  
**Available from: Standards Council of Canada, 350 Sparks Street, Ottawa,  
Ontario, K1R 7S8.  
1. Remove heater from carton.  
2. Remove all protective packaging applied to heater for shipment.  
3. Check heater for any shipping damage. If heater is damaged, promptly inform  
dealer where you bought heater.  
Piezo Ignition System  
This heater has a piezo ignitor. This system requires no matches, batteries, or other  
sources to light heater.  
PRODUCT  
FEATURES  
Thermostatic Heat Control  
This heater has a thermostat sensing bulb and a control valve. This results in the  
greatest heating comfort. This can also result in lower gas bills.  
INSTALLING  
HEATER  
WARNING  
A qualified service person must install heater and venting  
system. Have them inspect heater before use and at least  
annually. Follow all local codes.  
NOTICE  
This heater must be electrically grounded if equipped with  
blower. Follow all local codes. In the absence of local  
codes, follow the National Electric Code, ANSI/NFPA 70  
(U.S.) or Canadian Electrical Code CSA C22.1 (Canada).  
CHECK GAS TYPE  
Use only propane gas. If your gas supply is not propane, do not install heater. Call  
dealer where you bought heater for proper type heater.  
INSTALLATION ITEMS  
Before installing heater, make sure you have all items below.  
• external regulator (supplied by  
installer, see page 10)  
• piping (check local codes)  
• sealant (resistant to propane gas)  
• manual shutoff valve *  
• ground joint union  
• test gauge connection * (see  
Figure 7, page 12)  
• sediment trap  
• tee joint  
• pipe wrench  
• venting materials  
* An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an  
acceptable alternative to test gauge connection. Purchase the optional A.G.A.  
design-certified manual shutoff valve from your dealer. See Accessories, page 35.  
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LOCATING HEATER  
INSTALLING  
WARNING  
Maintain the minimum clearances shown in Figure 3,  
below. If you can, provide greater clearances.  
HEATER  
Continued  
WARNING  
Never install the heater  
in a mobile home or a recreational vehicle.  
where curtains, furniture, clothing, or other flam-  
mable objects are less than 48 inches from the front,  
53 inches from the top, 12 inches from the right side  
and 6 inches from the left side and back of heater.  
directly on carpeting, tile, or other combustible  
materials other than wood flooring. Place heater on  
metal or wood panel extending the full width and  
depth of heater.  
as a fireplace insert.  
in high traffic areas.  
in windy or drafty areas.  
CAUTION  
If you install the heater in a home garage  
heater pilot and burner must be at least 18 inches  
above floor  
locate heater where moving vehicle will not hit it.  
For convenience and efficiency, install heater  
• where there is easy access for operation, inspection, and service.  
• in coldest part of room.  
• near an electrical outlet if you are planning to add blower to heater. See  
Accessories, page 35 for blower.  
CEILING  
6"  
Minimum  
53"  
Minimum  
Right  
Side  
Left  
Side  
6" Minimum  
from Back  
12"  
Minimum  
48" Minimum from  
Front of Heater  
Figure 3 - Heater Clearances  
Continued  
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VENTING HEATER  
INSTALLING  
Note: Venting/chimney materials are not supplied with heater.  
HEATER  
Continued  
WARNING  
A qualified service person must install the venting system  
for this heater. If venting system is not properly installed  
and maintained, the vent safety shut-off system will pre-  
vent the heater from running. Follow all local codes.  
WARNING  
This heater has a vent safety shut-off system. This  
system shuts off the heater gas supply if you do not vent  
heater properly or the venting system is blocked. Do not  
operate heater if not properly vented. Do not tamper with  
the vent safety shut-off system. Carbon monoxide poison-  
ing and death may result.  
WARNING  
When venting this heater, follow the safety information  
listed below.  
Never vent heater to another room or inside a build-  
ing. Only vent heater to the outdoors.  
Do not vent heater exhaust to a chimney or flue  
serving another solid-fuel-burning or gas appliance.  
We recommend you use flues classified as prefabri-  
cated or masonry all-fuel chimney or type-B vent. See  
Vent Types, page 10.  
If using old vent, check vent for soot, creosote, and  
loose particles. If vent is damaged, repair or replace  
it before using heater.  
Extend the vertical section of vent pipe at least three  
feet above roof penetration.  
Extend the vertical section of vent pipe at least two  
feet above the highest point of any roof within ten  
feet.  
The horizontal run of vent pipe should rise at least  
1/4 inch for each foot of run.  
Support the vent pipe at least every five feet along its  
length. Do not use combustible materials to support  
vent pipe.  
Never extend vent pipe horizontally through outside  
wall and terminate. You must connect a vertical run  
of vent pipe to the horizontal run. The vertical run  
must be at least 25% longer than the horizontal run.  
Install vent or chimney cap that is approved for use  
with vented gas room heaters.  
Do not use vent pipe smaller in diameter than that of  
the heater draft hood outlet.  
Do not use dampers in the vent pipes.  
Vertical height of vent must be greater than five feet  
above vent connection at draft hood.  
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VENTING HEATER (continued)  
INSTALLING  
WARNING  
Do not vent heater in any of the following ways (see Figure 4).  
WARNING ICON  
G
001  
HEATER  
Continued  
The vertical section of vent pipe must  
extend at least two feet above the  
highest point of any roof within ten  
feet.  
Heater must be vented to the out-  
doors. Never vent heater to another  
room or inside a building.  
Never extend vent pipe horizontally  
through a chimney or flue. You must  
connect a vertical run of vent pipe to  
the horizontal run. The vertical run  
must be at least 25% longer or five  
feet minimum than the horizontal run.  
Never extend vent pipe horizontally  
through outside wall and terminate.  
You must connect a vertical run of  
vent pipe to the horizontal run. The  
vertical run must be at least 25%  
longer than the horizontal run.  
Less than 5' between elbows  
Vertical run of pipe must be at least  
five feet from elbow to elbow.  
Figure 4 - Improper Venting Systems  
Continued  
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VENTING HEATER (continued)  
INSTALLING  
Proper Size Vent  
HEATER  
To safely vent heater, the vent connector pipe must be the same diameter as the draft  
hood outlet on the rear of the heater. Pipe that is too small can cause flue gas to spill  
fromtheheater.Fastenventconnectortothedrafthoodoutletwithasheetmetalscrew.  
Continued  
Vent Types  
Prefabricated or Masonry All-Fuel Chimney - This is a masonry chimney or a  
residential-type prefabricated chimney. Only use prefabricated chimneys listed by  
Underwriters Laboratories (UL), Inc.  
Type-B Vent - These vents are made of noncombustible, corrosion resistant  
material. They are certified by a nationally recognized testing agency. Type-B  
vents are double-walled pipe. Clearances to combustible construction must be in  
accordance with the listing of the particular type-B vent. Type-B vents are currently  
listed as B-1, B-1 1/2, and B-2.  
The illustrations below show both vent types. The illustration shows typical  
construction of each type of venting system. Minimum clearances and lengths are  
added to the illustrations.  
Terminate at least 5' above draft hood.  
If vent extends over 5' above roof,  
support with guy wires or braces.  
Seal Around  
Collar and  
Flashing  
Vent Cap  
Must Be At  
Least 2 Feet  
Above  
Highest Point  
Within 10  
Feet.  
Maintain Listed  
Clearance of Vent  
Lock  
Joints  
Position  
Firestop  
Support  
Laterals  
Support If  
Necessary  
Lock Joints  
Maintain Listed  
Clearance of  
Vent  
53"  
Min.  
6"  
Min.  
5'  
Min.  
Vertical Vent  
Lock Joints  
Heater  
Heater  
Vent  
Connector  
Prefabricated or Ma-  
Type-B Vent  
sonry All-Fuel Chimney  
Figure 5 - Typical Construction of Venting Systems  
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CONNECTING TO GAS SUPPLY  
INSTALLING  
HEATER  
WARNING  
A qualified service person must connect heater to gas  
Continued  
supply. Follow all local codes.  
CAUTION  
Never connect heater directly to the propane supply.  
This heater requires an external regulator (not sup-  
plied). Install the external regulator between the heater  
and propane supply.  
The installer must supply an external regulator. The external regulator will reduce  
incoming gas pressure. You must reduce incoming gas pressure to between 11 and  
14 inches of water. If you do not reduce incoming gas pressure, heater regulator  
damage could occur. Install external regulator with the vent pointing down as  
shown in Figure 6. Pointing the vent down protects it from freezing rain or sleet.  
External Regulator  
VENT  
BULK PROPANE  
TANK  
Vent Pointing Down  
Figure 6 - External Regulator with Vent Pointing Down  
CAUTION  
Use only new, black iron or steel pipe. Copper tubing  
may be used in certain areas. Check your local codes.  
Use pipe that is 1/2" in diameter or greater to allow  
proper gas volume to heater. If pipe is too small, undue  
loss of pressure will occur.  
The gas supply line to your heater must be 1/2 inch in diameter or larger. If the  
supply line branches to serve two or more heaters, the line from the branch back to  
the external regulator must be doubled or tripled, etc., in size (depending upon the  
number of heaters). Example for 1/2 inch diameter supply line: If the supply line  
branches to serve two heaters, the line diameter from the branch back to the  
external regulator must be at least 1 inch. If three heaters are served, the line  
diameter from the branch back to the external regulator must be at least 1 1/2  
inches.  
Note: If gas supply line total length exceeds forty feet, use a larger diameter pipe.  
Use pipe that is the next size larger than the heater control valve fitting.  
Continued  
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Installation must include a manual shutoff valve, ground joint union, plugged 1/8"  
NPT tap and a sediment trap. Locate NPT tap within reach for test gauge hook up.  
NPT tap must be upstream from heater (see Figure 7).  
INSTALLING  
HEATER  
Apply pipe joint sealant lightly to male threads. This will prevent excess sealant  
from going into pipe. Excess sealant in pipe could result in clogged heater valves.  
Continued  
CAUTION  
Use pipe joint sealant that is resistant to liquid petro-  
leum (LP) gas.  
Install sediment trap in supply line as shown in Figure 7. Locate sediment trap  
where it is within reach for cleaning. Locate sediment trap where trapped matter is  
not likely to freeze. A sediment trap traps moisture and contaminants. This keeps  
them from going into heater controls. If sediment trap is not installed or is installed  
wrong, heater may not run properly.  
IMPORTANT: Use two pipe wrenches when connecting gas piping to gas control  
valve of heater. This will prevent turning or damaging control valve.  
Acceptable  
construction  
of inlet gas  
Control  
Valve  
line  
From External  
Regulator (11"  
W.C. Min** to  
14" W.C. Max)  
Manual  
Shutoff  
Valve *  
Ground  
Joint  
Union  
Preferred  
construction  
of inlet gas  
line  
Reducer  
Bushing to  
1/8" NPT  
Test  
Gauge  
Connection*  
From  
1/8" NPT  
Plug Tap  
External  
Regulator  
(11" W.C.  
Min** to  
14" W.C.  
Max)  
Tee Joint  
Tee Joint  
Pipe  
Nipple  
Sediment  
Trap  
Cap  
Figure 7 - Gas Connection  
* An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an  
acceptable alternative to test gauge connection. Purchase the optional A.G.A.  
design-certified manual shutoff valve from your dealer. See Accessories, page 35.  
** For purposes of input adjustment.  
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CHECKING GAS CONNECTIONS  
INSTALLING  
WARNING  
Test all gas piping and connections for leaks after install-  
ing or servicing. Correct all leaks at once.  
HEATER  
Continued  
WARNING  
Never use an open flame to check for a leak. Apply a  
mixture of liquid soap and water to all joints. Bubbles  
forming show a leak. Correct all leaks at once.  
CAUTION  
Make sure external regulator has been installed be-  
tween propane supply and heater. See guidelines under  
Connecting to Gas Supply, page 11.  
Pressure Testing Gas Supply Piping System  
Test Pressures In Excess of 1/2 PSIG  
1. Disconnect heater and its individual manual shutoff valve from gas supply  
pipe. Pressures in excess of 1/2 PSIG will damage heater regulator.  
2. Cap off open end of gas pipe where manual shutoff valve was connected.  
3. Pressurize supply piping system by either using compressed air or opening  
propane supply tank valve.  
4. Check all joints of gas supply piping system. Apply mixture of liquid soap and  
water to gas joints. Bubbles forming show a leak.  
5. Correct all leaks at once.  
Test Pressures Equal To or Less Than 1/2 PSIG  
1. Close manual shutoff valve (see Figure 8).  
2. Pressurize supply piping system by either using compressed air or opening  
propane supply tank valve.  
3. Check all joints from propane supply tank to manual shutoff valve. Apply  
mixture of liquid soap and water to gas joints. Bubbles forming show a leak.  
4. Correct all leaks at once.  
Pressure Testing Heater Gas Connections  
1. Open manual shutoff valve (see Figure 8).  
2. Open propane supply tank valve.  
3. Make sure control knob of heater is in the OFF position.  
4. Check all joints from manual shutoff valve to control valve on heater. Apply  
mixture of liquid soap and water to gas joints. Bubbles forming show a leak.  
5. Correct all leaks at once.  
6. Light heater (see Operating Heater, pages 20 through 22). Check the rest of the  
internal joints for leaks.  
7. Turn off heater (see To Turn Off Gas to Appliance, page 22).  
On Position  
Off Position  
Continued  
Figure 8 - Manual Shutoff Valve  
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INSTALLING GLASS PANEL  
1. Locate the glass panel package inside the back of the heater.  
INSTALLING  
HEATER  
Continued  
CAUTION  
WARNING ICON  
G
001  
Before installing glass panels, inspect the edges. If you  
notice any chips or cracks, do not install. If the surface  
on either side is deeply scratched, do not install. If  
these conditions exist, contact your Vanguard dealer for  
replacement glass panels.  
CAUTION  
WARNING ICON  
G
001  
Do not operate heater without glass panels installed.  
Operating heater without glass panels will damage front  
of heater due to excess temperatures.  
CAUTION  
WARNING ICON  
G
001  
Glass panels may have sharp edges. Handle with care.  
2. Remove lower front access panel of heater by removing two screws at upper  
corners of panel. The lower front access panel covers the lower front access  
area (see Figure 9).  
3. Remove two screws on glass guard. Remove glass guard (see Figure 9).  
4. Carefully insert one glass panel up through lower front access area (see Figure 10,  
page 15).  
5. Carefully slip glass panel behind hearth assembly (see Figure 10, page 15).  
Glass  
Guard  
Lower Front  
Access Panel  
Figure 9 - Removing Lower Front Access Panel  
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6. Inserttopedgeofglasspanelintotheupperglassretainingchannel(seeFigure11).  
INSTALLING  
HEATER  
Continued  
Hearth  
Assembly  
Glass  
Panel  
Lower Front  
Access Area  
Figure 10 - Inserting Glass Panels  
CAUTION  
WARNING ICON  
G
001  
Make sure you insert top edge of glass panels into the  
upper glass retaining channel. Do not install glass  
panels with top edge of glass in front of the upper glass  
retaining channel. Glass panels will not automatically  
go into the channel. You must guide the glass panels  
into it. Incorrect installation will damage front of heater  
due to excess temperatures.  
7. Lower glass into lower glass retaining channel (see Figure 12). Slide glass panel  
all the way to the left side.  
Note: If you have chipped or cracked a glass panel during installation, do not  
use. Contact your Vanguard dealer for a replacement glass panel.  
8. Repeat steps 4 through 7 for all glass panels.  
9. Reinstall glass guard. Reinstall lower front access panel of heater.  
1
Upper Glass  
Glass  
Retaining  
1
Panel  
Glass  
Panel  
Channel  
Lower Glass  
Retaining  
Channel  
Lower Glass  
Retaining  
Channel  
2
2
Lower Front  
Access Area  
Figure 11 - Inserting Top Edge of  
Glass Panel into Upper Glass  
Retaining Channel  
Figure 12 - Inserting Glass into  
Lower Retaining Channel  
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FRESH AIR FOR  
COMBUSTION  
AND  
WARNING  
This heater must have fresh air for proper operation. If  
not, poor fuel combustion and improper venting of flue  
gases will result. Carbon monoxide poisoning from  
backed-up flue gases could occur. Read the following  
instructions to insure proper fresh air for this and other  
fuel-burning appliances in your home.  
VENTILATION  
Today’s homes are built more energy efficient than ever. New materials, increased  
insulation, and new construction methods help reduce heat loss in homes. Home  
owners weather strip and caulk around windows and doors to keep the cold air out  
and the warm air in. During heating months, home owners want their homes as  
airtight as possible.  
While it is good to make your home energy efficient, it is not good to make it too  
airtight. Your home needs to breath. If your home is too airtight, fresh air has little  
chance of entering in. This could be dangerous if you have fuel-burning appliances.  
These appliances need fresh, outside air for proper combustion and ventilation.  
Exhaust fans, fireplaces, clothes dryers, and fuel-burning appliances draw air from  
the house to operate. This heater is a fuel-burning appliance. It uses air from inside  
the house for combustion. It also uses this air as a draft for venting. This draft air  
helps move combustion gases through the vent pipe to the outdoors. If your house  
is too airtight, there is not enough fresh air for these items to use. Fresh air may  
draw back into the house through venting flues and chimneys. This will keep fuel-  
burning appliances from venting properly. This may cause them to release poison-  
ous carbon monoxide gas into your home. It is very important to provide enough  
fresh air to run all fuel-burning appliances.  
DANGER  
Carbon monoxide poisoning may lead to death!  
Carbon monoxide is a colorless, odorless gas. Early signs of carbon monoxide  
poisoning resemble the flu, with headaches, dizziness, and/or nausea. If you have  
these signs, the heater may not be operating or venting properly. Get fresh air at  
once! Have heater or heater venting system serviced. Some people are more  
affected by carbon monoxide than others. These include pregnant women, persons  
with heart and lung disease and anemia, those under the influence of alcohol, and  
those at high altitudes.  
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DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION  
Example 1: Locating Heater in Unconfined (Open) Area  
FRESH AIR FOR  
COMBUSTION  
AND  
NOTICE  
An unconfined area has a minimum air volume of 50  
cubic feet for each 1000 BTU/Hr input rating of all  
appliances in the area (cubic feet equals length x width  
x height of area). Include adjoining rooms only if there  
are no doors between the rooms or if you add ventila-  
tion grills between the rooms (see Ventilating Confined  
Area, page 19).  
VENTILATION  
Continued  
In an open area, the air that leaks around doors and windows may provide enough  
fresh air for combustion and ventilation.  
Draft Hood Spillage Test  
Follow the steps below to see if enough fresh air is available.  
1. Close all windows and doors.  
2. If you have a fireplace, start a fire. Build fire until flames are burning strongly.  
3. Turn on all exhaust fans. These include exhaust fans for kitchen, bathroom,  
water heaters (gas or electric), etc.  
4. Turn on all vented gas appliances. These include any room heaters, water  
heaters, clothes dryer, etc.  
5. Wait ten minutes for drafts to regulate.  
6. Check for draft-hood spillage at each vented gas appliance. Do this by holding  
a lit match two inches from the draft opening (see Figure 13). If match flame  
pulls toward the draft hood, there is no spillage. If match flame blows away  
from the draft hood, there is spillage. This is a hazardous condition. See Draft  
Hood Spillage, page 18.  
Vent Pipe  
Vent Pipe  
Draft Hood  
Match  
Heater  
Typical  
Water  
Match  
Heater  
Draft Hood  
Opening  
Figure 13 - Checking for Draft Spillage  
No Draft Hood Spillage: This shows there is enough fresh air in area for  
appliances. Turn off all exhaust fans and appliances if desired.  
Continued  
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Draft Hood Spillage: This is a hazardous situation. Draft hood spillage re-  
leases poisonous carbon monoxide gas into your home.  
FRESH AIR FOR  
COMBUSTION  
AND  
DANGER  
Carbon monoxide poisoning may lead to death!  
VENTILATION  
If draft hood spillage occurs, check for blocked flue connectors, vent pipes, and  
chimneys. If you find blockage, remove. Test again for spillage. If spillage still  
occurs or there was no blockage, you need more fresh, outside air in the house. You  
must provide additional fresh-air ventilation. Follow the steps below at once.  
Continued  
A. Open a window near the appliance(s) at least two inches. Test again for  
spillage. If spillage does not stop, open window more and retest. If spillage  
stops, keep window open while running appliance(s). Supply fresh, outside  
air by a permanent method as soon as possible. If spillage still occurs, leave  
window open and go to next step.  
B. If you have a fireplace, open a window or door near it at least two inches.  
Test again for spillage. If spillage does not stop, open window or door more  
and retest. If spillage stops, keep window or door open while using fire-  
place. Supply fresh, outside air by a permanent method as soon as possible.  
If spillage still occurs, leave window or door open and go to next step.  
C. If you have kitchen and bathroom exhaust fans, turn them off. Test again for  
spillage. If spillage stops, do not use exhaust fans. Turn off circuit breakers for  
fans if possible. Permanently supply fresh, outside air as soon as possible.  
Providing Permanent Fresh-Air Ventilation  
If draft hood spillage occurs, you must permanently supply fresh, outside air to the  
inside of your house. Provide extra fresh air by using ventilation grills or ducts.  
Connect these items directly to the outdoors or spaces open to the outdoors. These  
spaces include attics and crawl spaces. If you install this heater in an area with  
other gas appliances, you must total the BTU/Hr input rating of all appliances.  
Follow the National Fuel Gas Code NFPA 54/ANSI Z223.1. It lists fresh-air  
requirements for fuel-burning appliances.  
IMPORTANT  
Do not provide openings for inlet or outlet air into attic  
if attic has a thermostat controlled power vent.  
Chimney  
or Gas  
Vent  
Ventilated  
Attic  
Outlet  
Air  
Outlet  
Air  
To Attic  
To  
Crawl  
Space  
Inlet  
Air  
Ventilated  
Crawl Space  
Inlet Air  
Figure 14 - Ventilation Air from Outdoors  
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Example 2: Locating Heater in Confined (Closed) Area  
FRESH AIR FOR  
COMBUSTION  
AND  
NOTICE  
A confined area has an air volume of less than 50 cubic  
feet for each 1000 BTU/Hr input rating of all appliances  
in the area (cubic feet equals length x width x height of  
area). Include adjoining rooms only if there are no doors  
between the rooms.  
VENTILATION  
Continued  
If you install this heater in a confined area, you must provide additional fresh air.  
Ventilating Confined Area  
This fresh air would come from an adjoining open area or outdoors.  
WARNING  
The adjoining open area must have enough fresh,  
outside air ventilation to supply any appliance in that  
area plus the confined area. Follow instructions under  
Example 1: Locating Heater in Unconfined (Open) Area,  
page 17 to make sure fresh air ventilation is adequate.  
When ventilating to an adjoining open area, you must provide two permanent  
openings: one within 12" of the ceiling and one within 12" of the floor on the wall  
connecting the two areas. Follow the National Fuel Gas Code NFPA 54/ANSI  
Z223.1. It lists fresh-air requirements for fuel-burning appliances.  
12"  
Ventilation Grills  
Connecting Two Rooms  
to Meet Unconfined Space  
Ventilation  
Grills into  
Closet for  
Hot Water  
Heater  
12"  
Recommended  
Fresh Air Duct  
into Crawl Space in  
Furnace Area or in  
Closet with Water Heater  
Figure 15 - Ventilation Air from Inside Building  
After providing ventilation between rooms, check for draft hood spillage (see Draft  
Hood Spillage Test, page 17). If draft hood spillage still occurs, provide more  
ventilation between rooms or provide permanent ventilation from outdoors. See  
Providing Permanent Fresh-Air Ventilation, page 18.  
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OPERATING  
HEATER  
WARNING  
Heater and venting system surfaces are very hot during  
operation.Keepchildrenandadultsawayfromhotsurfacesto  
avoid burns and clothing ignition. Carefully supervise young  
children when they are in the same room as heater. Heater will  
remain hot for a time after shut down. Let surface cool before  
touching.  
NOTICE  
If operating heater for the first time, a slight odor will occur.  
This odor will go away after a few hours of operation.  
FOR YOUR SAFETY READ BEFORE LIGHTING  
WARNING  
If you do not follow these instructions exactly, a fire or  
explosion may result causing property damage, personal  
injury or loss of life.  
A. This appliance has a pilot which must be lighted by hand. When lighting the  
pilot, follow these instructions exactly.  
B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to  
smell next to the floor because some gas is heavier than air and will settle on the  
floor.  
WHAT TO DO IF YOU SMELL GAS  
• Do not try to light any appliance.  
• Do not touch any 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 or gas supplier. Force or attempted repair may result in a fire or  
explosion.  
D. Do not use this appliance if any part has been under water. Immediately call a  
qualified service technician to inspect the appliance and to replace any part of the  
control system and any gas control which has been under water.  
LIGHTING INSTRUCTIONS  
1. STOP! Read the safety information above.  
2. If heater is equipped with a blower, turn off all electric power to the heater.  
3. Make sure manual shutoff valve is fully open.  
4. Locate control knob on top of heater. Fully depress control knob in any position  
other than PILOT to shut off burner and pilot.  
DEPRESS  
Ignitor Button  
FOR OFF  
PILOT  
VEILLEUSE  
APPUYER POUR  
ARRÊTER  
Control Knob  
LOW  
BAS  
HIGH  
HAUT  
Figure 16 - Control Knob and Ignitor Button  
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5. 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 safety information at the top of  
page 17. If you don’t smell gas, go to the next step.  
OPERATING  
HEATER  
6. Turn control knob clockwise  
control knob for five seconds or more.  
to the PILOT position. Fully depress  
Clockwise  
Continued  
Note: You may be running this heater for the first time after hooking up to gas  
supply. If so, you may need to depress control knob in for 15 seconds. This  
allows air to bleed from the gas system.  
7. With control knob depressed, push down and release ignitor button. This will  
light pilot. The pilot is attached to the front of burner. You can see pilot through  
front glass of heater (see Figure 17). If needed, keep pressing ignitor button until  
pilot lights.  
Note: If pilot does not stay lit, refer to Troubleshooting, pages 26 through 29.  
Also contact a qualified service person or gas supplier for repairs. Until repairs  
are made, light pilot with match. To light pilot with match, see Manual Lighting  
Procedure, page 22.  
8. Keep control knob depressed for 30 seconds after lighting pilot. After 30 seconds,  
release control knob.  
• If control knob does not pop up when released, contact a qualified service  
person or gas supplier for repairs.  
• Shut off gas immediately.  
Note: If pilot goes out, repeat steps 4 through 8.  
9. If heater is equipped with a blower, turn on all electrical power to the heater.  
10. Turn control knob counterclockwise  
to desired setting.  
C-clockwise  
11. If equipped, turn blower control to the AUTO or ON position (if desired).  
CAUTION  
Do not try to adjust heating levels by using the manual  
shutoff valve.  
Figure 17 - Viewing Pilot  
Continued  
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MANUAL LIGHTING PROCEDURE  
OPERATING  
HEATER  
1. Remove lower front access panel on heater.  
Continued  
2. Locate pilot. Pilot is attached to the front of burner.  
3. Follow steps 1 through 6 under Lighting Instructions, pages 20 and 21.  
4. With control knob depressed, strike match. Hold match to pilot until pilot lights.  
5. Follow steps 8 through 11 under Lighting Instructions, page 21.  
TO TURN OFF GAS TO APPLIANCE  
Shutting Off Heater  
1. Fully depress control knob in any position other than PILOT to shut off burner  
and pilot.  
2. If equipped, turn blower control to OFF position.  
Shutting Off Burner Only (pilot stays lit)  
1. Turn control knob to the PILOT position. At this setting, only the pilot remains lit.  
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Check pilot flame pattern and burner flame pattern often.  
INSPECTING  
PILOT AND  
BURNER  
PILOT FLAME PATTERN  
Figure 18 shows a correct pilot flame pattern. Figure 19 shows an incorrect pilot  
flame pattern. The incorrect pilot flame is not touching the thermocouple. This will  
prevent the thermocouple from getting hot, causing the heater to shut down.  
FLAME  
Thermocouple  
Thermocouple  
Figure 18 - Correct Pilot  
Flame Pattern  
Figure 19 - Incorrect  
Pilot Flame Pattern  
If pilot flame pattern is incorrect, as shown in Figure 19  
• turn heater off (see To Turn Off Gas to Appliance, page 22)  
• contact a qualified service person  
BURNER FLAME PATTERN  
Note: To view burner flame, look through front glass of heater.  
Figure 20, page 24 shows a correct burner flame pattern. Figure 21, page 24 shows  
two incorrect burner flame patterns. One incorrect flame pattern shows high yellow  
flames and the other shows flames lifting off of burner.  
WARNING  
If high yellow flame occurs, your heater could produce  
increased levels of carbon monoxide. If burner flame is  
incorrect, follow instructions on page 24.  
NOTICE  
Do not mistake orange flames with yellow flame. Dirt or  
other fine dust particles enter the heater and burn  
causing brief patches of orange flame.  
Continued  
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INSPECTING  
PILOT AND  
BURNER  
Sharp Blue  
Flame  
FLAME  
Continued  
Figure 20 - Correct Burner Flame Pattern  
High  
Yellow  
Flame  
Flame  
Lifting  
Off of  
Burner  
Figure 21 - Incorrect Burner Flame Patterns  
If burner flame pattern is incorrect, as shown in Figure 21  
• turn heater off (see To Turn Off Gas to Appliance, page 22)  
• see Troubleshooting, pages 26 through 29.  
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CLEANING  
AND  
WARNING  
Turn off heater and let cool before cleaning or servicing.  
MAINTENANCE  
WARNING  
Keep heater clear and free from combustible materials,  
gasoline, and other flammable vapors and liquids.  
CAUTION  
You must keep control areas, burner, and circulating air  
passageways of heater clean. Inspect these areas of  
heater before each use. Have heater and venting system  
inspected yearly by a qualified service person. Heater  
may need more frequent cleaning due to excessive lint  
from carpeting, bedding material, etc.  
CABINET  
Air Passageways  
• Use a vacuum cleaner or pressurized air to clean.  
Exterior  
• Use a soft cloth dampened with a mild soap and water mixture. Wipe the  
cabinet to remove dust.  
COMBUSTION CHAMBER AND BURNER  
Clean the combustion chamber and burner if you have run the heater with a high  
yellow flame. Incomplete combustion from lack of air causes the yellow flame.  
This will deposit soot inside the combustion chamber and on the burner. To clean  
combustion chamber and burner, you must remove the burner from heater. See  
Service Procedures, page 31, to remove burner. After removing burner, blow inside  
of combustion chamber clean with compressed air. Clean burner with a soft-bristled  
brush. Blow soot from burner with compressed air.  
PILOT  
Use a vacuum cleaner, compressed air, or small, soft-bristled brush to clean.  
BURNER ORIFICE  
Use a vacuum cleaner, compressed air, or small, soft-bristled brush to clean. You  
can also use a tooth pick to clean orifice. Do not enlarge or damage orifice hole.  
PILOT AND BURNER FLAME  
Check the pilot and burner flame monthly. Make sure pilot and burner flame is  
burning correctly. See Inspecting Pilot and Burner Flame, page 23.  
VENTING SYSTEM  
Check the venting system at least once a year. Make sure joints are secure and vent  
pipe is in good condition. Do not obstruct combustion and ventilation air entering  
the rear of heater.  
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TROUBLE-  
SHOOTING  
WARNING  
Turn off and unplug heater and let cool before servicing.  
Unless you need gas supply for testing, shut off manual  
shutoff valve before servicing. Only a qualified service per-  
son should service and repair heater and venting system.  
Note: All troubleshooting  
items are listed in order of  
operation.  
CAUTION  
Never use a wire, needle, or similar object to clean pilot.  
This can damage pilot.  
OBSERVED  
PROBLEM  
POSSIBLE  
CAUSE  
REMEDY  
Whenignitorbuttonis 1. Incorrect spark gap.  
1. Adjustsparkgapto1/16".  
pressed, there is no 2. Ignitor electrode posi- 2. Replace ignitor.  
spark at pilot.  
tioned wrong.  
3. Ignitor electrode broken. 3. Replace ignitor.  
4. Ignitor electrode not con- 4. Reconnect ignitor cable.  
nected to ignitor cable.  
5. Ignitor cable pinched or 5. Free ignitor cable if  
wet.  
pinched by any metal or  
tubing. Keep ignitor  
cable dry.  
6. Piezo ignitor nut is loose. 6. Tighten nut holding piezo  
ignitor to heater cabinet.  
Nut is located inside  
heater cabinet at top.  
7. Broken or frayed ignitor 7. Replace ignitor cable.  
cable.  
8. Loose ignitor cable.  
9. Bad piezo ignitor.  
8. Reconnect ignitor cable.  
9. Replace piezo ignitor.  
Whenignitorbuttonis 1. Gas supply turned off or 1. Turn on gas supply or  
pressed, there is spark  
at pilot but no igni-  
tion.  
manual shutoff valve  
closed.  
2. Control knob not in PI- 2. Turn control knob to PI-  
LOT position. LOT position.  
3. Control knob not pressed 3. Press in control knob  
open manual shutoff  
valve.  
in while in PILOT posi-  
tion.  
while in PILOT position.  
4. Air in gas lines when in- 4. Continue holding down  
stalled.  
control knob. Repeat ig-  
niting operation until air  
is removed.  
5. Depleted gas supply.  
6. Pilot is clogged.  
5. Contact local propane gas  
company.  
6. Clean pilot (see Cleaning  
and Maintenance, page  
25) or replace pilot as-  
sembly.  
7. Gas regulator setting is 7. Replace control valve.  
not correct.  
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OBSERVED  
PROBLEM  
POSSIBLE  
CAUSE  
TROUBLE-  
REMEDY  
SHOOTING  
Pilot lights but flame  
goes out when  
control knob is  
released.  
1. Manual shutoff valve  
not fully open.  
2. Control knob not fully  
pressed in.  
1. Fully open manual shut-  
off valve.  
2. Press in control knob  
fully.  
Continued  
3. Control knob not  
pressed in long enough.  
3. After pilot lights, keep  
control knob pressed in  
30 seconds.  
4. Safety interlock system  
has been triggered.  
4. Wait one minute for  
safety interlock system  
toreset.Repeatignition.  
5. Hand tighten until snug,  
then tighten 1/4 turn  
more.  
5. Thermocouple connec-  
tion loose at control  
valve.  
6. Pilotflamenottouching  
thermocouple, which  
allows thermocouple to  
cool, causing pilot  
flame to go out. This  
problem could be  
caused by any or all of  
the following:  
6. A) Contact qualified  
service person to prop-  
erly adjust pilot flame  
B) Contact local pro-  
pane gas company.  
C) Clean pilot (see  
Cleaning and Mainte-  
nance, page 25) or  
A) Improperlyadjusted  
pilot flame  
replace pilot assembly.  
B) Low gas pressure  
C) Dirty or partially  
clogged pilot  
7. Thermocouple damaged.  
8. Control valve damaged.  
7. Replace thermocouple.  
8. Replace control valve.  
1. Safety interlock system  
has been inadvertently  
triggered.  
1. Fully depress control  
knob in any position  
other than pilot and re-  
lease. Wait one minute  
for safety interlock sys-  
tem to reset. Repeat igni-  
tion.  
Burner does not light  
after pilot is lit.  
2. Burner orifice is  
clogged.  
2. Cleanburner(seeClean-  
ing and Maintenance,  
page 25) or replace  
burner orifice.  
3. Burner orifice diameter  
is too small.  
3. Replace burner orifice.  
4. Inlet gas pressure is too  
low.  
4. Contact local propane  
gas company.  
1. Manifoldpressureistoo  
low.  
2. Burner orifice is  
clogged.  
1. Contact local propane  
gas company.  
2. Clean burner (see  
Cleaning and Mainte-  
nance, page 25) or re-  
place burner orifice.  
Delayed ignition of  
burner.  
Continued  
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OBSERVED  
PROBLEM  
POSSIBLE  
CAUSE  
TROUBLE-  
REMEDY  
SHOOTING  
Burner backfiring  
during combustion.  
1. Burner orifice is  
clogged or damaged.  
1. Clean burner (see Clean-  
ing and Maintenance,  
page 25) or replace  
burner orifice.  
Continued  
2. Burner damaged.  
2. Replace burner.  
3. Gas regulator defective.  
4. Delayed ignition.  
3. Replace control valve.  
4. See above.  
Yellow flame during  
burner combustion.  
1. Not enough air.  
1. Check burner for dirt and  
debris. If found, clean  
burner (see Cleaning and  
Maintenance, page 25).  
2. Replace control valve.  
2. Gas regulator defective.  
Slight smoke or odor  
during initial opera-  
tion.  
1. Residues from manu-  
facturing processes.  
1. Problem will stop after a  
few hours of operation.  
Burner fails to re-  
spond to thermostat.  
1. Pilot flame not lit.  
1. Light pilot burner (see  
Lighting Instructions,  
page 20).  
2. Pilot flame not properly  
heating end of thermo-  
couple.  
2. Pilot flame needs adjust-  
ing. Contact a qualified  
service person.  
3. Pilot burner orifice  
clogged or damaged.  
3. Clean pilot burner (see  
Cleaning and Mainte-  
nance, page 25).  
4. Control valve defec-  
tive.  
4. Replace control valve.  
5. Temperature at thermo-  
stat bulb satisfied.  
Heater produces a  
whistling noise when  
burner is lit.  
1. Air in gas line.  
1. Operate burner until air is  
removed from line. Have  
gas line checked by local  
propane gas company.  
2. Observe minimum instal-  
lation clearances (see  
Figure 3, page 7).  
2. Air passageways on  
heater blocked.  
3. Dirty or partially  
clogged burner orifice.  
3. Clean burner (see Clean-  
ing and Maintenance,  
page 25) or replace  
burner orifice.  
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TROUBLE-  
WARNING  
If you smell gas  
SHOOTING  
Shut off gas supply.  
Continued  
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  
neighbors phone. Follow the gas suppliers  
instructions.  
If you cannot reach your gas supplier, call the  
fire department.  
OBSERVED  
PROBLEM  
POSSIBLE  
CAUSE  
REMEDY  
1. This is common with  
most heaters. If noise is  
excessive, contact quali-  
fied service person.  
Heater produces a 1. Metal expanding while  
clicking/ticking noise  
just after burner is lit  
or shut off.  
heating or contracting  
while cooling.  
Heater produces un-  
wanted odors.  
1. Ventilate room. Stop us-  
ingodorcausingproducts  
while heater is running.  
2. Refill supply tank.  
3. Find and correct all  
leaks (see Checking Gas  
Connections, page 13).  
1. Heater burning vapors  
from paint, hair spray,  
glues, etc.  
2. Low fuel supply.  
3. Gas leak. See Warning  
statement at top of  
page.  
1. Check venting system.  
If damaged or blocked,  
repair. If venting system  
is OK, have qualified  
service person replace  
vent safety switch, wire  
harness, or thermo-  
couple interrupter.  
Heater shuts off in use. 1. Heater not venting cor-  
rectly. Vent safety switch  
shuts off heater.  
2. Contact local propane  
gas company.  
2. Low line pressure.  
3. Clean pilot (see Clean-  
ing and Maintenance,  
page 25).  
3. Pilot partially clogged.  
1. Find and correct all  
leaks (see Checking Gas  
Connections, page 13).  
Gas odor even when 1. Gas leak. See Warning  
control knob is in OFF  
position.  
statement at top of  
page.  
2. Replace control valve.  
2. Control valve damaged.  
Gas odor during com- 1. Foreign matter between 1. Take apart gas tubing  
bustion.  
control valve and burner.  
2. Gas leak. See Warning  
statement at top of  
page.  
3. Foreign fumes in area of  
heater being drawn  
through burner combus-  
tion.  
and remove foreign mat-  
ter.  
2. Find and correct all  
leaks (see Checking Gas  
Connections, page 13).  
3. Ventilate area around  
heater to remove any  
foreign fumes.  
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SERVICE  
WARNING  
PROCEDURES  
Turn off and unplug heater and let cool before servicing.  
Unless you need gas supply for testing, shut off manual  
shutoff valve before servicing. Only a qualified service  
person should service and repair heater and venting  
system.  
Removing Control Valve  
and Burner Tube  
1. Shut off gas supply to  
heater.  
Control Rod  
2. Remove lower front  
access panel on heater.  
3. Disconnect burner tube  
from orifice holder (see  
Figure 22).  
4. Remove pilot gas line  
from control valve (see  
Figure 22).  
Cotter Pin  
Control Valve  
Control Valve  
Bracket  
5. Disconnect wire connec-  
tors from thermocouple  
interrupter (see Figure  
22).  
6. Remove thermocouple  
and thermocouple inter-  
rupter from control valve.  
7. Remove cotter pin from  
control valve. This  
Mounting  
Screw  
Burner  
Tube  
releases the control rod  
from valve (see Figure  
22).  
Wire Connector  
Orifice  
Holder  
8. Remove the two mounting  
screws from control valve  
mounting bracket (see  
Figure 22).  
Thermocouple  
Interrupter  
9. Remove assembly from  
the rear of heater.  
10. To reinstall, reverse above  
steps. Turn on gas to  
heater and check for gas  
leaks. Apply a mixture of  
liquid soap and water to  
all joints. Bubbles forming  
show a leak. Correct all  
leaks at once.  
Thermocouple  
Pilot Gas Line  
Wire Connector  
Figure 22 - Removing Control Valve and Burner Tube  
11. Replace lower front  
access panel.  
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SERVICE  
PROCEDURES  
Continued  
Removing Burner  
1. Shut off gas supply to  
heater.  
Burner  
2. Remove lower front  
access panel on heater.  
3. Disconnect burner tube  
from orifice holder (see  
Figure 23).  
4. Remove orifice holder  
from burner (see Figure  
23).  
Burner  
Tube  
5. Remove pilot burner  
bracket nuts and remove  
pilot assembly (see Figure  
23).  
6. Move burner to the right  
for clearance. Rotate  
burner 90° and remove  
burner through lower front  
access opening.  
7. To reinstall, reverse above  
steps. Turn on gas to  
heater and check for gas  
leaks. Apply a mixture of  
liquid soap and water to  
all joints. Bubbles form-  
ing show a leak. Correct  
all leaks at once.  
Pilot Burner  
Assembly  
Pilot Burner  
Bracket Nut  
Orifice  
Holder  
Figure 23 - Removing Burner Tube, Orifice Holder,  
and Pilot Burner Assembly (35,000 BTU/Hr Burner Shown)  
Continued  
8. Replace lower front  
access panel.  
31  
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SERVICE  
PROCEDURES  
Continued  
Changing Burner Orifice  
Burner  
1. Shut off gas supply to  
heater.  
2. Remove lower front  
access panel on heater.  
3. Disconnect burner tube  
from orifice holder (see  
Figure 24).  
4. Remove orifice holder  
from burner (see Figure  
24).  
Orifice  
Burner  
Tube  
5. Use socket or open-end  
wrench to remove the old  
orifice from the orifice  
holder.  
Orifice  
Holder  
6. Clean and replace orifice,  
or replace with new  
orifice.  
Figure 24 - Orifice Location (35,000 BTU/Hr Burner Shown)  
7. Turn on gas to heater and  
check for gas leaks. Apply  
a mixture of liquid soap  
and water to all joints.  
Bubbles forming show a  
leak. Correct all leaks at  
once.  
8. Replace lower front  
access panel.  
Figure 25 - Orifice  
32  
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You may have further questions about installation, operation, or troubleshooting.  
If so, contact DESA International’s Technical Service Department at 1-800-323-  
5190.  
TECHNICAL  
SERVICE  
35,000 BTU/Hr  
Model  
50,000 BTU/Hr  
Model  
SPECIFICATIONS  
BTU  
35,000  
50,000  
Type Gas  
Ignition  
Propane Only  
Piezo  
Propane Only  
Piezo  
Pressure Regulator Setting  
Inlet Gas Pressure  
Maximum  
10.5" W.C.  
10.5" W.C.  
14" W.C.  
11" W.C.  
14" W.C.  
11" W.C.  
Minimum  
Dimensions, Inches  
Heater (H x W x D)  
Shipping Weight (pounds)  
Flue Vent Size  
Orifice Size  
25 x 27 1/4 x 16  
78  
4" dia.  
28 x 32 1/2 x 16  
98  
4" dia.  
52 drill, ø .0635  
46 drill, ø .081  
Note: These heaters are certified for elevations of 0-4500 feet above sea level. For  
elevations above 2000 feet, de-rate heater 4% for each 1000 feet above sea level.  
When gas pressure is too low  
• pilot will not stay lit  
SERVICE  
HINTS  
• burner will have delayed ignition  
• heater will not produce specified heat  
• propane gas supply may be low  
When gas quality is bad  
• pilot will not stay lit  
• burner will produce yellow flames and soot  
• heater will backfire when lit  
You may feel your gas pressure is too low or gas quality is bad. If so, contact your  
local propane gas supplier.  
33  
100354  
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Note: Use only original replacement parts. This will protect your warranty cover-  
age for parts replaced under warranty.  
ORDERING  
REPLACEMENT  
PARTS  
Parts Under Warranty  
Contact Vanguard dealer or call DESA International’s Technical Service Depart-  
ment at 1-800-323-5190.  
When calling DESA International, have ready  
• your name  
• your address  
• model number of your heater  
• how heater was malfunctioning  
• type of gas used (propane or natural gas)  
• purchase date  
Usually, we will ask you to return the defective part to the factory.  
Parts Not Under Warranty  
Contact Vanguard dealer. If they can’t supply original replacement part(s), either  
contact your nearest Parts Central (below) or call DESA International’s Parts  
Department at 1-800-972-7879.  
When calling DESA International, have ready  
• model number of your heater  
• the replacement part number  
These Parts Centrals are privately owned businesses. They have agreed to support  
our customer’s needs by providing original replacement parts and accessories. For  
certain parts, some Parts Centrals may refer you to a dealer in your area. When  
calling a Parts Central, ask for the Parts Department.  
PARTS  
CENTRALS  
Howard Industries  
1514 South Maple Ave.  
Los Angeles, CA 90015  
213-747-5121  
Washer Equipment Co.  
1715 Main Street  
Kansas City, MO 64108  
KS, MO, AR  
Warmer Image/Halco  
Enterprises  
208 Carter Dr., Unit 21  
West Chester, PA 19382  
215-696-2670  
816-842-3911  
Victor Manufacturing  
42 Rumsey Road  
1-800-368-0803  
Controls, Inc.  
E. Hartford, CT 06108  
NY, NJ, DE, PA, MD  
203-289-4223  
6820 Glenwood Ave.  
Raleigh, NC 27612  
NC, SC, VA, MD  
919-787-2242  
LaPortes Parts & Service  
2444 North 5th Street  
Hartsville, SC 29550  
803-879-3009  
Controlled Engineering  
299 Roosevelt Road  
Glen Ellyn, IL 60137  
708-469-7300  
1-800-334-5886  
Cans Unlimited, Inc.  
P. O. Box 645  
Taylor, SC 29687  
All States  
803-879-3009  
1-800-845-5301  
Taratin Tank Co.  
P.O. Box 6129  
Freehold, NJ 07728  
908-780-9340  
Portable Heater Parts  
342 N. County Rd 400E  
Valparaiso, IN 46383  
All States  
219-462-7441  
1-800-362-6951  
800-922-0724  
East Coast Energy  
707 Broadway  
W. Long Branch, NJ 07764  
908-870-8809  
Dealers LP Equip. Co.  
P.O. Box 341145  
Bartlett, TN 38184  
Al, TN  
901-386-8780  
800-428-8902  
FBD  
1-800-755-8809  
601 Hope Street  
Bowling Green, KY 42101  
502-796-8406  
800-654-8534  
ATP Services  
990 Avenue of Americas  
New York, NY 10018  
212-967-6255  
Capitol Hydronic Supply  
104 West Jefferson Street  
Falls Church, VA 22046  
703-416-8555  
American Air Dist.  
537 W. 62nd Street  
Shreveport, LA 71108  
318-861-0634  
Dayton Hardware  
P. O. Box 275  
North Dayton Station  
Dayton, OH 45404  
All States  
Tuco Industrial Products  
P.O. Box 5076  
Lynwood, WA 98046  
206-743-9533  
Master Service Center  
1184 Wilson  
Grand Rapids, MI 49504  
616-791-4760  
513-258-3721  
OH only 1-800-762-3426  
1-800-735-1268  
Central Air Supply  
424 North Rockwell  
Oklahoma City, OK 73127  
405-495-0014  
Auer Steel & Heating Supply  
2935 W. Silver Spring Dr.  
Milwaukee, WI 53209  
414-463-1234  
800-446-1446  
34  
100354  
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Purchase these heater accessories from your local dealer. If they can not supply  
these accessories, either contact your nearest Parts Central (see page 34) or call  
DESA International’s Parts Department at 1-800-972-7879. You can also write to  
the address listed on the back page of this manual.  
ACCESSORIES  
BLOWER KIT - PART NUMBER GA6010  
For all models. Provides better heat distribution.  
Makes heater more efficient. Complete installation  
and operating instructions provided with blower.  
MANUAL SHUTOFF  
VALVE - GA5010  
For all models. Manual shutoff valve  
with 1/8" NPT tap.  
35  
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ILLUSTRATED  
PARTS LIST  
Burner  
Assembly  
1
3
2
4
11  
7
50 Model  
27  
7
6
23  
7
8
35 Model  
6
25  
5
10  
22  
11  
9
26  
28  
13  
24  
12  
24-1  
24-2  
24-3  
24-4  
14  
19  
21  
20  
15  
17  
16  
18  
16  
4
17  
36  
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This list contains replaceable parts used in your heater. When ordering parts, follow  
the instructions listed under Ordering Replacement Parts on page 34 of this  
manual.  
PARTS LIST  
Burner  
Assembly  
KEY  
PART NUMBER FOR  
NO. GVB50P  
GVB35P  
DESCRIPTION  
QTY.  
1
2
3
4
5
6
7
100206-02  
098324-02  
097159-02  
098271-05  
099974-02  
099704-05  
——  
100206-01  
098324-02  
097159-02  
098271-05  
099974-01  
063015  
Combustion Chamber  
Control Knob  
1
1
1
1
1
1
3
2
1
1
1
3
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Piezo Ignitor  
Ignitor Cable  
Control Rod  
Limit Switch Bracket  
Screw, #10-16 x 3/8"  
Screw, #10-16 x 3/8"  
Wire Assembly  
Cotter Pin  
M11084-26  
——  
M11084-26  
099986-01  
100000-01  
231939  
8
099986-01  
100000-01  
231940  
9
10  
11  
Limit Switch  
M11084-38  
——  
——  
Screw, #8-18 x 3/8"  
Screw, #8-18 x 3/8"  
Screw, #10-16 x 2 1/2"  
Control Valve  
M11084-38  
099211-01  
100207-02  
098265-01  
098936-02  
100028-02  
100307-01  
099976-02  
530988  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
099211-01  
100207-02  
098265-01  
098936-02  
100028-02  
100307-01  
099976-02  
530988  
Elbow  
Thermocouple Interrupter  
Pilot Tubing  
Thermocouple  
Burner Tube  
Control Bracket  
Orifice Holder  
Orifice  
100309-01  
530124  
100309-01  
100469-01  
100384-01  
100090-01  
100308-02  
100467-01  
100466-01  
100468-01  
100465-01  
101342-04  
100385-01  
100090-01  
100308-02  
Burner Assembly  
Burner Bracket  
Pilot Assembly  
Pilot Sleeve  
24-1 100467-01  
24-2 100466-01  
24-3 100468-01  
24-4 100465-01  
Pilot Nut  
Pilot Electrode  
Nut Electrode  
25  
101342-05  
Glass Panel Package  
(includes bottom glass retainer)  
1
2
2
3
26  
27  
28  
098249-01  
530192  
098249-01  
530192  
Nut, M5 x 0.8  
Glass Spring  
098304-01  
098304-01  
Screw, #10-24 x 3/8"  
37  
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This list contains replaceable parts used in your heater. When ordering parts, follow  
the instructions listed under Ordering Replacement Parts on page 34 of this  
ILLUSTRATED  
PARTS LIST  
Cabinet  
manual.  
6
10  
Assembly  
8
11  
4
3
7
9
6
6
5
2
1
PART NUMBER FOR  
KEY  
NO. GVB50P  
GVB35P  
DESCRIPTION  
QTY.  
1
2
3
100202-02  
098304-01  
100202-01  
098304-01  
Lower Front Panel  
Screw, #10-16 x 3/8"  
1
2
1
100053-02BR 100053-01BR Hearth Assembly  
(includes items 5 & 7)  
Top Panel  
4
5
6
100204-02  
098304-02  
M11084-26  
——  
100204-01  
098304-02  
——  
1
2
17  
19  
1
Screw, #6-20 x 3/8"  
Screw, #10-16 x 3/8"  
Screw, #10-16 x 3/8"  
M11084-26  
7
100205-02BR 100205-01BR Glass Guard  
8
9
100203-02  
099123-01  
100203-01  
099123-01  
Cabinet Assembly  
Thermobulb Clip  
1
2
10  
11  
100101-02BS 100101-01BS Cabinet Back  
1
1
099997-01  
099997-01  
Switch Plug  
PARTS AVAILABLE - NOT SHOWN  
099988-01  
100157-01  
099988-01  
100157-01  
Lighting Instructions  
Decal, English  
1
Lighting Instructions  
Decal, French  
Control Position Decal  
Warning Decal  
1
1
1
099987-01  
100154-01  
099987-01  
100154-01  
38  
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NOTES  
39  
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WARRANTY INFORMATION  
Always specify model and serial numbers when communicating with the factory.  
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard  
written warranty. We make no other warranty, expressed or implied.  
LIMITED WARRANTY  
VANGUARD VENTED PROPANE GAS HEATERS  
LIMITED ONE YEAR WARRANTY  
This DESA product is warranted to the original purchaser to be free from defect in material and workmanship under normal use and  
maintenance for a period of one year from the date of installation whether or not actual use begins on that date. It is the responsibility of  
the consumer/owner to establish the warranty period. You are required to furnish proof of installation date, which may be a Bill of Sales  
orotherpaymentrecordwhichverifiestheoriginalinstallation. Aneworremanufacturedparttoreplaceanydefectivepartwillbeprovided,  
at DESA’s sole option, without charge for the part itself, FOB the shipping point. The exchanged part will be warranted for only the  
unexpired portion of the original warranty. Defective parts must be returned to DESA, transportation charges prepaid, (DESA is not  
responsible for any freight charges), where DESA will establish to its sole satisfaction that the part was or became defective under normal  
use and maintenance. This warranty provides a labor allowance to restore the product to proper operating condition. No reimbursement  
will be made for transportation, diagnostics, shipping, handling, or other incidental expenses. This warranty applies only to the product  
in its original installation location and is voided if the product is reinstalled elsewhere.  
LIMITED FOUR YEAR WARRANTY ON COMBUSTION CHAMBER  
During the second through fifth years after the date of original installation, DESA further warrants the combustion chamber against defects  
in material and workmanship under normal use and maintenance. A replacement combustion chamber will be provided under the same  
conditions as stated in the one year warranty.  
LIMITATION OF WARRANTIES  
All implied warranties (including implied warranties of merchantability) are hereby limited in duration to the period for which each limited  
warranty is given. Some states do not allow limitations on how long an implied warranty lasts so the above limitations may not apply to  
you. The expressed warranties made in this warranty are exclusive and may not be altered, enlarged, or changed by any distributor, dealer,  
or other person whomsoever.  
DESA WILL NOT BE RESPONSIBLE FOR:  
1. Normal maintenance as outlined in the owner’s operation and installation manual including cleaning of component parts; such as,  
orifices and burners.  
2. Failure to start and/or operate due to voltage or gas condition, blown fuses, open circuit breakers, loose or disconnected wires, low gas  
pressure, or other damages due to inadequacy or interruption of electrical service or gas supply.  
3. Damage or repairs required as a consequence of faulty or incorrect installation not in conformance with DESA instructions.  
4. Damage as a result of floods, winds, lightning, accidents, corrosive atmosphere, or other conditions beyond the control of DESA.  
5. Parts or accessories not supplied by DESA.  
6. Costs incurred in gaining access to the heater.  
7. Damage or repairs needed as a consequence of any misapplication, abuse, unreasonable use, unauthorized alteration, improper  
servicing, improper operation, or failure to provide reasonable and necessary maintenance.  
8. Freight charges incurred from parts replacement.  
9. DESA product installed outside the Continental U.S.A., Alaska, and Canada.  
10. DESA products whose serial number has been altered, defaced, or removed.  
11. Fuel or electricity costs or increases in such costs from any reason whatsoever.  
12. Any special, indirect or consequential property, economic, or commercial damage of any nature whatsoever. Some states do not allow  
the exclusion of incidental or consequential damages, so the above limitation may not apply to you.  
No representative, dealer, or other person is authorized to assume for DESA International any additional, different, or other liability in  
connection with the sale of this DESA product.  
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.  
For more information about this warranty, write:  
DESA  
INTERNATIONAL  
2701 Industrial Drive  
P.O. Box 90004  
Bowling Green, KY 42102-9004  
100354-01  
REV. C  
6/94  
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