Desa GVC65NA, GVC35NA, GVC50NA User Manual

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VENTED NA TURAL
GAS HEA TERS
OWNER’S OPERATION AND INSTALLATION MANUAL
Models: GVC65NA, GVC50NA, GVC35NA
WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, per­sonal injury, or loss of life.
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.
• 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 per-
formed by a qualified installer, service agency, or the gas supplier.
WARNING: Improper installation,
adjustment, alteration, service, or maintenance can cause property damage, personal injury or loss of life. Refer to this manual for cor­rect installation and operational procedures. For assistance or additional information consult a qualified installer, service agency, or the gas supplier.
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Save this manual for future reference.
CONTENTS
SECTION PAGE
Safety Information.........................................................................3
Product Identification .................................................................... 5
Local Codes ................................................................................... 6
Unpacking .................................................................................... 6
Product Features ............................................................................ 6
Installing Heater ............................................................................6
Check Gas Type...................................................................... 6
Installation Items.....................................................................6
Locating Heater.......................................................................7
Venting Heater ........................................................................8
Connecting to Gas Supply ...................................................... 11
Checking Gas Connections..................................................... 13
Fresh Air For Combustion and Ventilation...................................14
Determining Fresh-Air Flow for Heater Location
Example 1: Locating Heater in Unconfined (Open) Area 15
Draft Hood Spillage Test............................................ 15
Providing Permanent Fresh-Air Ventilation .............. 16
Example 2: Locating Heater in Confined (Closed) Area..17
Ventilating Confined Area ......................................... 17
Operating Heater ........................................................................... 18
For Your Safety Read Before Lighting .................................. 18
Lighting Instructions............................................................... 18
Manual Lighting Procedure .................................................... 20
Blower Operation (For Models with Blower) ........................ 20
To Turn Off Gas To Appliance .............................................. 20
Inspecting Pilot and Burner Flame................................................ 21
Pilot Flame Pattern..................................................................21
Burner Flame Pattern .............................................................. 21
Cleaning and Maintenance ............................................................ 23
Troubleshooting.............................................................................24
Service Procedures ........................................................................28
Removing Control Valve and Burner Tube............................28
Removing Burner.................................................................... 29
Changing Burner Orifice ........................................................ 30
Blower Wiring Diagram................................................................ 30
Technical Service .......................................................................... 31
Specifications ................................................................................ 31
Service Hints ................................................................................. 31
Accessories .................................................................................... 31
Ordering Replacement Parts..........................................................32
Parts Centrals................................................................................. 32
Illustrated Parts List ......................................................................33-35
Warranty Information.................................................................... Back Cover
2
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SAFETY
INFORMATION
WARNINGS
IMPORTANT: Read this owner’s manual carefully and completely be-
fore trying to assemble, operate, or service this heater. Improper use of
this heater can cause serious injury or death from burns, 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.
Natural Gas: Natural gas is odorless. An odor-making agent is added to natural gas.
The odor helps you detect a natural gas leak. However, the odor added to natural gas
can fade. Natural 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 natural gas. Do not convert heater to use different fuel type.
3. 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.
4. 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 as a reproductive toxin under Proposition 65. Read the instructions under
for Combustion and Ventilation, pages 14 through 17 for complete information.
5. 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.
Fresh Air
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Continued
3
SAFETY
WARNINGS
Continued
INFORMATION
Continued
6. Provide the following minimum heater clearances from combustibles (as viewed from the front of heater):
Front: 48 inches Back: 6 inches Top: 53 inches Right Side: 12 inches Left Side: 6 inches
7. Do not run heater
• where flammable liquids or vapors are used or stored
• under dusty conditions
8. Never place clothing or any flammable objects on the heater or venting system.
9. 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.
10. Do not use heater as a cooking device.
11. Do not alter heater or its controls. Any change may create a safety hazard.
12. 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.
13. Replace any safety screen or guard removed for servicing before running heater.
14. 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 Natural Gas Heater
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Draft Hood Outlet for Venting System
Control Valve
Blower (on models equipped with blower)
Figure 2 - Vented Natural Gas Heater, Rear View
5
LOCAL CODES
Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of the following:
• 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; or National Fire Protection Association, Inc., Batterymarch Park, Quincy, MA 02269
**Available from: Standards Council of Canada, 350 Sparks Street, Ottawa, Ontario, K1R 7S8
UNPACKING
PRODUCT
FEATURES
INSTALLING
HEATER
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.
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.
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 natural gas. If your gas supply is not natural gas, 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.
• piping (check local codes)
• sealant (resistant to propane gas)
• manual shutoff valve *
• ground joint union
• test gauge connection * (see
Figure 7, page 12)
* 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 31.
• sediment trap
• tee joint
• pipe wrench
• venting materials
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INSTALLING
LOCATING HEATER
HEATER
Continued
WARNING
Maintain the minimum clearances shown in Figure 3, below. If you can, provide greater clearances.
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 heater has blower or if you are planning to add blower to heater. See Accessories, page 31 for blower.
CEILING
6"
Minimum
Left Side
53"
Minimum
Right Side
6" Minimum
from Back
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48" Minimum from
Front of Heater
Figure 3 - Heater Clearances
12"
Minimum
Continued
7
INSTALLING
HEATER
Continued
VENTING HEATER
Note:
Venting/chimney materials are not supplied with heater.
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 pre­vent 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 poisoning and death may result.
WARNING
When venting this heater, follow the safety information listed below.
Never vent heater to another room or inside a build­ing. 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 prefabri­cated or masonry all-fuel chimney or type-B vent. See
Vent Types,
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.
page 10.
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INSTALLING
VENTING HEATER
(continued)
HEATER
Continued
WARNING
Do not vent heater in any of the following ways (see Figure 4).
Heater must be vented to the out­doors. Never vent heater to another room or inside a building.
The vertical section of vent pipe must extend at least two feet above the highest point of any roof within ten feet.
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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
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.
Continued
9
INSTALLING
HEATER
Continued
VENTING HEATER
(continued)
Proper Size Vent
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 from the heater. Fasten vent connector to the draft hood outlet with a sheet metal screw.
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.
5'
Min.
6"
Min.
Heater
Vent Cap Must Be At Least 2 Feet Above Highest Point Within 10 Feet.
Maintain Listed Clearance of Vent
Support If Necessary
Lock Joints
Lock Joints
Vent Connector
Seal Around Collar and Flashing
Position Firestop
Maintain Listed Clearance of Vent
Vertical Vent
Heater
Lock Joints
Support Laterals
53"
Min.
10
Prefabricated or Masonry All-Fuel Chimney
Figure 5 - Typical Construction of Venting Systems
Type-B Vent
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INSTALLING
CONNECTING TO GAS SUPPLY
HEATER
Continued
WARNING
A qualified service person must connect heater to gas supply. Follow all local codes.
WARNING
Never connect heater to private (non-utility) gas wells. This gas is commonly known as well-head gas.
IMPORTANT:
line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater regulator damage could occur.
Check gas line pressure at gas meter before connecting heater to gas
Gas Meter
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Figure 6 - Connecting Heater to Utility Gas Line
CAUTION
Use only new, black iron or steel pipe. Internally-tinned 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 gas meter must be doubled or tripled, etc., in size (depending upon the number of heaters). to serve two heaters, the line diameter from the branch back to the gas meter must be at least 1 inch. If three heaters are served, the line diameter from the branch back to the gas meter must be at least 1 1/2 inches.
Note:
Use pipe that is the next size larger than the heater control valve fitting.
Example for 1/2 inch diameter supply line:
If gas supply line total length exceeds forty feet, use a larger diameter pipe.
If the supply line branches
Continued
11
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