Desa CGN12 User Manual

VENT-FREE NATURAL GAS HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Model: CGN12

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.

— 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.

W ARNING: Improper installation,

adjustment, alteration, service, or maintenance can cause injury or property damage. 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.

Save this manual for future reference

CONTENTS

SECTION PAGE

Safety Information.........................................................................2

Product Identification .................................................................... 4

Local Codes ................................................................................... 4

Unpacking......................................................................................4

Product Features ............................................................................4

Installing To Wall..........................................................................5

Connecting To Gas Supply............................................................9

Checking Gas Connections............................................................10

Operating Heater ...........................................................................12

For Your Safety Read Before Lighting...................................12

Lighting Instructions ............................................................... 12

To Select Heating Level..........................................................14

To Turn Off Gas To Appliance...............................................15

Manual Lighting Procedure ....................................................15

Inspecting Burner ..........................................................................15

Pilot Flame Pattern..................................................................15

Burner Flame Pattern .............................................................. 16

Cleaning And Maintenance ........................................................... 17

Troubleshooting.............................................................................17

Technical Service .......................................................................... 20

Specifications ................................................................................21

Service Hints .................................................................................21

Replacement Parts ......................................................................... 21

Parts Centrals.................................................................................22

Service Publications ......................................................................22

Accessory ......................................................................................22

Parts List ........................................................................................ 23

Illustrated Parts Breakdown ..........................................................23

Warranty Information .................................................................... Back Cover

SAFETY

INFORMATION

WARNINGS

WARNING ICON G 001

IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, and carbon monoxide poisoning.

DANGER

WARNING ICON G 001

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 working properly. Get fresh air at once! Have heater 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.

Continued

SAFETY

WARNINGS

WARNING ICON G 001

Continued

INFORMATION

Continued

1. Use only natural gas. Do not convert heater to use different fuel type.

2. 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

3. Never install the heater

• in sleeping quarters, a mobile home, or a recreational vehicle

• where curtains, furniture, clothing, or other flammable objects are less than 36 inches from the front, top, or sides of the heater

• as a fireplace insert

• in high traffic areas

• in windy or drafty areas

4. Always run heater with control knob at LOW or HIGH locked positions. Never set control knob between locked positions. Poor combustion and higher levels of carbon monoxide may result.

5. Open window to admit fresh, outside air when using heater. Open window one or two inches. When used without fresh, outside air, heater may give off carbon monoxide gas.

6. Never run heater in small, closed room. Open door into next room to help ventilate.

7. Keep all air openings in front and bottom of heater clear and free of debris. This will insure enough air for proper combustion.

8. If heater shuts off, do not relight until you provide fresh, outside air. If heater keeps shutting off, have it serviced.

9. Do not run heater

• where flammable liquids or vapors are used or stored

• under dusty conditions

10.Never place any objects on the heater.

11.Surface of heater becomes very hot when running heater. Keep children and adults away from hot surface to avoid burns or clothing ignition. Heater will remain hot for a time after shut-down. Allow surface to cool before touching.

12.Make sure grill guard is in place before running heater.

13.Do not alter heater or its controls. Any change may create a safety hazard.

14. Do not use heater if any part of heater has been under water.

15.Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.

16. Do not operate heater in elevations above 4,500 feet.

PRODUCT

IDENTIFICATION

Control Knob

Grill Guard

Burners

LOCAL CODES

UNPACKING

Front Panel

Figure 1 - Vent-Free Natural Gas Heater

Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code ANSI Z223.1, also known as NFPA 54*.

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

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.

Heater Cabinet

PRODUCT

FEATURES

Safety Device

This heater has a pilot with an Oxygen Depletion Sensor Shutoff System (ODS). The ODS/pilot is a required feature for vent-free room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air.

Piezo Ignition System

This heater has a piezo ignitor. This system requires no matches, batteries, or other sources to light heater.

INSTALLING

TO WALL

NOTICE

A qualified service person must install heater. Follow all local codes.

CHECK GAS TYPE

Use only natural gas. If your gas supply is not natural, do not install heater. Call dealer where you bought heater for proper type heater.

INSTALLATION ITEMS

Before installing heater, make sure you have the items listed below.

• piping (check local codes)

• sealant (resistant to propane gas)

• manual shutoff valve *

• ground joint union

* 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 ACCESSORY, page 22.

• test gauge connection * (see Figure 10, page 10)

• sediment trap

• tee joint

• pipe wrench

LOCATING HEATER

This heater is designed to be mounted on a wall.

WARNING

WARNING ICON G 001

Maintain the minimum clearances shown in Figure 2 (page 6). If you can, provide greater clearances from floor, ceiling, and joining wall.

WARNING

WARNING ICON G 001

Never install the heater

• in sleeping quarters, a mobile home, or a recreational vehicle

• where curtains, furniture, clothing, or other flammable objects are less than 36 inches from the front, top, or sides of the heater

• as a fireplace insert

• in high traffic areas

• in windy or drafty areas

CAUTION

WARNING ICON G 001

Operating heater where impurities in the air (such as tobacco smoke) exist may discolor walls.

CAUTION

WARNING ICON G 001

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

Continued

36"

FLOOR

CEILING

Minimum

Minimum To Top Surface Of Carpeting, Tile Or Other Combustible Material

8" Minimum From Sides Of Heater

Right Side

Left Side

INSTALLING

TO WALL

Continued

Figure 2 - Mounting Clearances As Viewed From Front of Heater

INSTALLING HEATER TO WALL

Marking Screw Locations

1. Determine where you will locate heater.

WARNING

WARNING ICON G 001

Maintain minimum clearances shown in Figure 3. If you can, provide greater clearances from floor and joining wall.

2. Mark two mounting screw locations on wall (see Figure 3).

7 3/4"

Mounting

Screw

Locations

20 1/4"

Minimum To

Maintain 3"

Clearance

From Floor

10 7/8"

Minimum To

Maintain 6"

Clearance From Wall

JOINING WALL

FLOOR

Figure 3 - Mounting Screw Locations

Installing Two Mounting Screws

Note:

Wall anchors and mounting screws are in hardware package. The hardware

package is provided with heater.

Attaching to wall stud method

For attaching mounting screw to wall stud

1. Drill hole at marked location using 9/64" drill bit.

2. Insert mounting screw into wall stud.

3. Tighten screw until 1/16" space (thickness of penny) is between screwhead and wall.

Attaching to wall anchor method

Follow instructions below to attach mounting screws to hollow walls (wall areas between studs) or solid walls (concrete or masonry).

1. Drill holes at marked locations using 5/16" drill bit. For solid walls (concrete or masonry), drill at least 1 1/4" deep.

2. Fold wall anchor (see Figure 4).

3. Insert wall anchor (wings first) into hole. Tap anchor flush to wall.

Figure 4 - Folding Anchor

4. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to “pop” open anchor wings (see Figure 5).

IMPORTANT:

Do not hammer key!

For thick walls (over 1/2" thick) or solid walls, do not pop open wings.

5. Tighten two screws until 1/16" space (thickness of penny) is between screwheads and wall (see Figure 6).

Thin Walls (1/4" to 1/2" thick)

Figure 5 - Popping Open Anchor Wings For Thin Walls

Thin or Thick Wall (thick wall shown)

1/16" Space

Solid Wall

Figure 6 - Tightening Anchors

Placing Heater On Mounting Screws

1. Locate two keyhole slots on back panel of heater (see Figure 7).

2. Place large openings of slots over screwheads. Slide heater down until screws are in small portion of slots.

Keyhole

Slots

Figure 7 - Location Of Keyhole Slots On Back Panel Of Heater

Removing Front Panel Of Heater

1. Remove two screws near bottom corners of front panel.

2. Lift straight up on grill guard until it stops. Grill guard will slide up about 1/4".

3. Pull bottom of front panel forward, then down.

Figure 8 - Removing Front Panel Of Heater

Installing Bottom Mounting Screw

1. Locate bottom mounting hole. This hole is near bottom on back panel of heater (see Figure 9).

2. Mark screw location on wall.

3. Remove heater from wall.

4. If installing bottom mounting screw into hollow or solid wall, install wall anchor. Follow steps 1 through 5 under Attaching To Wall Anchor Method, page 7. If installing bottom mounting screw into wall stud, drill hole at marked location using 9/64" drill bit.

5. Replace heater on wall.

6. Insert bottom anchor screw through back panel into bottom anchor or drilled hole (see Figure 9).

7. Tighten screw until heater is firmly secured to wall. Do not over tighten.

Note:

Do not replace front panel at this time. Replace front panel after making

gas connections and checking for leaks (see pages 9-11).

Figure 9 - Installing Bottom Mounting Screw

+ 16 hidden pages