Desa RH10PT User Manual

Page 1

BLUE FLAME VENT-FREE PROPANE/LP GAS HEATER OWNER’S OPERATION AND INSTALLATION MANUAL

MODELS REM10PT AND RH10PT

10,000 Btu/Hr Thermostatically-Controlled Heater

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 performed by a quali-

ﬁed installer, service agency or the gas supplier.

Save this manual for future reference.

For more information, visit www.desatech.com

Page 2

WARNING: 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.

WARNING: This is an unvented gas-ﬁred heater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer to Air for Combustion and Ventilation section on page 5 of this manual.

This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.

State of Massachusetts: The installation must be made by a licensed plumber or gas ﬁtter in the Commonwealth of Massachusetts.

Sellers of unvented propane or natural gas-ﬁred supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit.

Vent-free gas products are prohibited for bedroom and bathroom installation in the Common wealth of Massachusetts.

TABLE OF CONTENTS

Safety Information ............................................... 3

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

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

Product Identiﬁcation ...........................................

Product Features ................................................. 5

Propane/LP Supply .............................................. 5

Installation ........................................................... 5

Operating Heater ................................................11

Inspecting Heater .............................................. 12

Cleaning and Maintenance ................................ 13

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Troubleshooting ................................................. 14

Storage .............................................................. 17

Speciﬁcations .................................................... 17

Service Hints ..................................................... 17

Technical Service ..............................................

Service Publications .......................................... 17

Accessories ....................................................... 17

Replacement Parts ............................................ 17

Illustrated Parts Breakdown and Parts List ....... 18

Warranty

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

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SAFETY INFORMATION

WARNING: This product contains and/or generates chemicals known to the State of California to cause cancer or birth defects or other reproductive harm.

IMPORTANT: Read this owner’s manual carefully and completely be fore tr ying to assemb le, 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 head aches, 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.

Propane/LP Gas: Propane/LP gas is a fuel gas.

Fuel gases are odorless. An odor-making agent is added to fuel gases. The odor helps you detect a fuel gas leak. However, the odor added to fuel gas can fade. Fuel gas may be present even though no odor exists.

Make certain you read and understand all warn ings. Keep this manual for reference. It is your guide to safe and proper operation of this heater.

WARNING: If the recreational or commercial enclosure does not have a window or roof vent, DO NOT USE THIS HEATER inside.

This heater should be inspected before each use. Frequent cleaning may be required. The control compartments, burners and circulating air passageways of the heater must be kept clean.

Due to high temperatures, the appliance should be located out of trafﬁc and away from combustible materials.

Children and adults should be alerted to the hazard of high surface temperature and should

stay away to avoid burns or clothing ignition.

Do not place clothing or other ﬂammable material on or near the appliance. Never place any objects on the heater.

Heater will remain hot for a time after shutdown. Allow surface to cool before touching.

Young children should be care-

fully supervised when they are near the heater.

WARNING: Any change to this heater or its controls can be dangerous.

Any safety screen or guard removed for servicing the appliance must be replaced prior to operating the heater.

WARNING: Do not use a blower insert, heat exchanger insert or other accessory not approved for use with this heater.

Keep the appliance area clear and free from combustible ma terials, gasoline and other ﬂam mable vapors and liquids.

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SAFETY INFORMATION

Continued

1. Install and use heater with care. Follow all local ordinances and codes. In the absence of local ordinances and codes, refer to the

Standard for Storage and Handling of Liqueﬁed Petroleum Gas, ANSI/NFPA 58 and the Natural Gas Installation Code, CAN/CGA B149.2. This instructs on the safe storage and

handling of propane/LP gases.

2. This appliance is only for use with the type of gas indicated on the rating plate. This ap pliance is not convertible for use with other gases.

3. This heater may be used in a recreational enclosure or temporary construction work enclosure with a remote reﬁllable propane/LP cylinder ONLY when the cylinder is located outdoors and the heater is used with the hose kit #LPA3090 (included with this heater). NEVER bring a reﬁllable propane/LP cylinder indoors. A ﬁre or explosion can occur causing property damage, serious injury or death.

4. Use only the hose and factory preset regulator provided with the heater. Use only replacement pressure regulators and hose assemblies speci ﬁed in this manual. See Accessories, page 17.

5. Inspect the hose before each use of the heater. If it is evident there is excessive abrasion or wear or the hose is cut, it must be replaced prior to the heater being put into operation. Use replacement hose assembly kit #LPA3090 (see Accessories, page 17).

6. Use only propane gas set up for vapor with drawal.

7. This heater shall not be installed in a bedroom or bathroom.

8. This heater needs fresh, outside air ventilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff sys tem. The ODS shuts down the heater if not enough fresh air is available. You must provide a minimum 10 square inches of ventilation air for adequate combustion.

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

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

11. Do not use heater if any part has been under water. Immediately call a qualiﬁed service technician to inspect the room heater and to replace any part of the control system and any gas control which has been under water.

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

13. Operating heater above elevations of 4,500 feet could cause pilot outage.

14. Turn off propane/LP supply when not in use.

15. Check heater for damage before each use. Do

not use a damaged heater.

16. Do not alter heater. Keep heater in its original state.

17. Do not use heater if altered.

18. This heater can only be used in a recreational or commercial enclosure with a window or roof vent. This heater is not for outdoor use.

19. Before using the heater provide adequate ventilation. An area of 10 square inches of opening of a window or roof vent is needed for adequate combustion and ventilation air.

LOCAL CODES

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

*Available from:

American National Standards Institute, Inc.

1430 Broadway

National Fire Protection Association, Inc.

New York, NY 10018

Batterymarch Park

Quincy, MA 02269

UNPACKING

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 return to dealer where you bought heater.

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PRODUCT

IDENTIFICATION

Ignitor Button

Front Panel

Regulator Hose

Figure 1 - Vent-Free Propane/LP Gas

Heater

Control Knob

Heater Cabinet

Grill Guard

Glass Panel

PRODUCT FEATURES

SAFETY PILOT

This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. 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.

PROPANE/LP SUPPLY

Propane/LP gas and propane/LP tank(s) are to be furnished by the user. The propane/LP cylinder to be used must be constructed and marked in accordance with the speciﬁcations for the propane/LP gas cylinders of the U.S. Department of Transportation (DOT).

Use this heater only with a propane/LP vapor withdrawal supply system. See Chapter 5 of the Standard for Storage and Handling of Liqueﬁed

Petroleum Gas, ANSI/NFPA 58 and/or CAN/CGA B149.2. Your local library or ﬁre department will

have this booklet.

The amount of propane/LP gas ready for use from propane/LP tanks varies. Two factors decide this amount:

1. The amount of propane/LP gas in tank(s)

2. The temperature of tank(s)

This heater is designed for use with a 20 or 40 pound reﬁllable propane/LP cylinder when used as a self contained heating system (with hose and regulator). Larger tanks may be used if installed in a permanent gas supply system.

The propane/LP cylinder used must include a collar to protect the cylinder valve and a listed overﬁlling prevention device (OPD).

INSTALLATION

CHECK GAS TYPE

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

WARNING: This appliance is equipped for propane/LP gas. Field conversion is not permitted.

LOCATING HEATER

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

WARNING: Never install the heater

• in a bedroom or bathroom

• where curtains, furniture,

clothing or other ﬂammable objects are less than 36" from the front, top or sides of the heater

• as a ﬁreplace insert

• in high trafﬁc areas

• in windy or drafty areas

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Page 6

INSTALLATION

36"

FLOOR

CEILING

Minimum

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

6" Minimum From Sides Of Heater

Right Side

Left Side

Continued

CAUTION: This heater creates warm air currents. These currents move heat to wall surfaces next to heater. Installing heater next to vinyl or cloth wall coverings or operating heater where impurities (such as, but not limited to, tobacco smoke, aromatic candles, cleaning ﬂu ids, oil or kerosene lamps, etc.) in the air exist, may discolor walls or cause odors.

CAUTION: If you install the heater in a home garage

• heater pilot and burner must

be at least 18" above ﬂoor.

• locate heater where moving

vehicle will not hit it.

For convenience and efﬁciency, install heater

• where there is easy access for operation, inspec tion and service

• in coldest part of room

THERMOSTAT SENSING BULB

The thermostat sensing bulb is located inside the heater. Do not move this bulb during installation or operation of the heater.

INSTALLING HEATER TO WALL

Marking Screw Locations

1. Determine where you will locate heater.

WARNING: Maintain mini-

mum clearances shown in Figure

3. If you can, provide greater clearances from ﬂoor and join

ing wall.

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

Installing Two Mounting Screws

Note: Wall anchors and mounting screws are in hardware package. The hardware package is provided with heater.

8 7/8"

Minimum To

Maintain 6"

Clearance From Wall

JOINING WALL

7 3/4"

Mounting

Screw

Locations

Minimum To

Maintain 3"

Clearance

From Floor

20 1/4"

Figure 2 - Mounting Clearances As

Viewed From Front of Heater

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

Figure 3 - Mounting Screw Locations

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, page 7).

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FLOOR

110373-01E

Page 7

INSTALLATION

Continued

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

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 (thick ness of penny) is between screwheads and wall (see Figure 6).

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 4 - Folding Anchor

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.

Figure 8 - Removing Front Panel Of

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 hol low or solid wall, install wall anchor. Follow steps 1 through 5 under Attaching To Wall Anchor Method, page 6. If installing bottom mounting screw into wall stud, drill hole at marked location using 9/64" drill bit.

5. Replace heater on wall. Insert bottom anchor screw through back panel

6. 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 8 through 10).

Heater

Keyhole Slots

Figure 7 - Location Of Keyhole Slots On

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Back Panel Of Heater

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Figure 9 - Installing Bottom Mounting

Screw

Page 8

INSTALLATION

Continued

CONNECTING TO PORTABLE CYLINDER GAS SUPPLY

WARNING: Review and understand the warnings in the Safety Information section, page

3. They are needed to safely op erate this heater. Follow all local codes when using this heater.

WARNING: Test all gas piping and connections for leaks after installation or servicing. Never use an open ﬂame to check for a leak. Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak. Correct all leaks at once.

WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.

Never bring a refillable pro pane/LP cylinder indoors. A ﬁre or explosion can occur causing property damage, serious injury or death.

IMPORTANT: You must use a propane/LP gas supply cylinder that is compatible with the connection device provided with the hose and regulator.

1. Remove 90° gas ﬁtting from hardware bag.

2. Apply pipe joint sealant lightly to male NPT threads (see Figure 10). This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

3. Hold gas pressure regulator with wrench when connecting the 90° gas ﬁtting. Do not over tighten connection to regulator. The regulator body could be damaged.

4. Provide propane/LP supply system (see Pro

pane/LP Supply

Connect fuel gas ﬁtting on hose/regulator assembly to propane/LP tank(s). Turn fuel gas ﬁtting counterclockwise into threads on tank. Tighten ﬁrmly using a wrench. IMPORTANT: Position regulator so that hose leaving the regulator is in a horizontal position (see Figure 11). This

, page 5).

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places the regulator vent in the proper position to protect it from the weather.

6. Connect hose to heater inlet. Tighten ﬁrmly using a wrench. You must use the regulator supplied with heater.

Open propane/LP supply valve on propane/LP tank(s) slowly. Note: If not opened slowly, excess-ﬂow check valve on propane/LP tank may stop gas ﬂow. If this happens, close propane/LP supply valve and open again slowly.

Check all connections for leaks. Apply a noncorrosive leak detection ﬂuid to gas joints. Bubbles forming show a leak that must be corrected.

9. Close propane/LP supply valve.

Pressure Regulator

Heater Cabinet

Apply Sealant To This End Only

Elbow

Hose To Regulator

Figure 10 - Gas Connection

Propane/LP Supply Valve

Propane/LP Tank

Figure 11 - Regulator Position

Regulator

Hose Fitting

Fuel Gas Fitting

CONNECTING TO PERMANENT GAS SUPPLY

WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to

the pressure regulator.

WARNING: A qualiﬁed service person must connect heater to gas supply. Follow all local codes.

110373-01E

Hose To Heater

Page 9

INSTALLATION

Continued

CAUTION: Never connect heater directly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply.

Installation Items

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

• external regulator (supplied by installer)

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• equipment shutoff valve *

• ground joint union

• test gauge connection *

• sediment trap

• tee joint

• pipe wrench * A CSA design-certiﬁed equipment shutoff valve

with 1/8" NPT tap is an acceptable alternative to test gauge connection. The optional CSA designcertiﬁed equipment shutoff valve can be purchased from your dealer. See

If installing to a ﬁxed fuel piping system, the installation must conform with local codes or, in the absence of local codes, with the National Fuel

Gas Code, ANSI Z223.1

If the heater will be connected to a permanent gas source, the installer must supply an external regulator. The external regulator will reduce in coming gas pressure. You must reduce incoming gas pressure to between 11" and 14" of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install the external regulator with the vent pointing down as shown in Figure 12. Pointing the vent down protects it from freezing rain or sleet.

Propane/LP Supply Tank

Figure 12 - External Regulator With Vent

110373-01E 9

Accessories, page 17.

External Regulator

Vent Pointing Down

Pointing Down

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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 of large enough diameter to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

Installation must include equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 13).

IMPORTANT: Install an equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.

3/8" NPT Pipe Nipple**

Ground Joint Union

Equipment Shutoff Valve*

From External Regulator (11" W.C. to 14" W.C. Pressure)

* A CSA design-certiﬁed equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certiﬁed equipment shutoff valve from your dealer. See

** The 90º elbow on the regulator is removed and the 3/8" NPT pipe nipple is installed in its place.

3" Min.

Figure 13 - Gas Connection

Accessories, page 17.

Pressure Regulator

Tee Joint Reducer

Bushing to 1/8" NPT

1/8" NPT Plug Tap

Tee Joint

Pipe Nipple

Cap

Heater Cabinet

Trap

Sediment

Connection*

Test Gauge

Page 10

INSTALLATION

Continued

CHECKING GAS CONNECTIONS FOR PERMANENT GAS SUPPLY

WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open ﬂame to check for a leak. Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure external regulator has been installed between propane/LP supply and heater. See guidelines under

Connecting to Permanent Gas Supply, page 8.

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1. Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.

2. Cap off open end of gas pipe where equipment shutoff valve was connected.

3. Pressurize supply piping system by opening propane/LP supply tank valve or using com pressed air.

4. Check all joints of gas supply piping system. Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Reconnect heater and equipment shutoff valve to gas supply. Check reconnected ﬁttings for leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1. Close equipment shutoff valve (see Figure 14).

2. Pressurize supply piping system by either opening propane/LP supply tank valve or using compressed air.

3. Check all joints from supply tank to equip ment shutoff valve (see Figure 15). Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak.

4. Correct all leaks at once.

PRESSURE TESTING HEATER GAS CONNECTIONS

1. Open equipment shutoff valve (see Figure 14).

2. Open propane/LP supply tank valve.

3. Make sure control knob of heater is in the OFF position.

4. Check all joints from equipment shutoff valve to thermostat gas valve (see Figure 15). Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Light heater (see Lighting Instructions, page

11). Check all other internal joints for leaks.

7. Turn off heater (see To Turn Off Gas to Appli ance, page 12).

8. Replace front panel.

Equipment Shutoff Valve

Figure 14 - Equipment Shutoff Valve

Control Valve Location

Propane/LP Supply

Tank

Figure 15 - Checking Gas Joints

Open

Closed

Equipment Shutoff Valve

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Page 11

OPERATING HEATER

FOR YOUR SAFETY READ

BEFORE LIGHTING

WARNING: If you do not follow these instructions exactly, a ﬁre or explosion may result causing property damage, per sonal 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 neig h bor ʼs phon e. Fo llo w the gas supplierʼs 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, donʼt try to repair it, call a qualiﬁed service technician. 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. Make sure equip ment s hutoff valve is fully open.

3. Turn off any electric power to the appliance if service is to be performed.

4. Turn control knob clockwise OFF position.

5. Wait ﬁve 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 above. If you donʼt smell gas, go to the next step.

to the

6. Turn control knob counterclockwise to the PILOT position. Press in control knob for ﬁve (5) seconds.

7. With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached to the front of burner. Note: You may be running this heater for the ﬁrst time after hooking up to gas supply. If so, you may need to press in control knob for 30 seconds or more. This will allow air to bleed from the gas system. If needed, keep pressing ignitor button until pilot lights. If ignitor does not light pilot, refer to Troubleshooting, page 14 or 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 12.

8. Keep control knob pressed in 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.

Note: If pilot goes out, repeat steps 4 thru 7.

Thermostat models have a safety interlock system. Wait one (1) minute before lighting pilot again.

9. Turn control knob counterclockwise to desired heating level. The main burner should light.

CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve.

Ignitor Button

Figure 16 - Control Knob In The OFF

Thermocouple

Figure 17 - Pilot

Control Knob

Position

Ignitor Electrode

Pilot Burner

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Page 12

OPERATING HEATER

Continued

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1. Turn control knob clockwise OFF position.

2. Turn off all electric power to the appliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

Turn control knob clockwise PILOT position.

THERMOSTAT CONTROL

OPERATION

The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas ﬂow to the burner. This increases or decreases the burner ﬂame height. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any heat level between 1 and 5. Selecting the 5 setting will cause the burner to remain fully on without modulating down in most cases.

Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room temperature (depending on housing construction, installation location, room size, open air tem peratures, etc.). Frequent use of your heater will let you determine your own comfort levels.

MANUAL LIGHTING

PROCEDURE

1. Remove front panel (see Figure 8, page 7).

2. Follow steps 1 through 7 under Lighting Instructions, page 11.

3. With control knob pressed in, strike match. Hold match to pilot until pilot lights.

4. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 9, under Lighting Instructions, page 11.

5. Replace front panel.

to the

INSPECTING HEATER

Check pilot ﬂame pattern and burner ﬂame pattern often.

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 cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

If pilot ﬂame pattern is incorrect, as shown in Figure 19

•

turn heater off (see To Turn Off Gas to Appliance)

• see Troubleshooting, page 14

Thermocouple

Figure 18 - Correct Pilot Flame Pattern

Thermocouple

Figure 19 - Incorrect Pilot Flame Pattern

BURNER FLAME PATTERN

Figure 20, page 13, shows a correct burner ﬂame pattern. Figure 21, page 13, shows an incorrect burner ﬂame pattern. The incorrect burner ﬂame pattern

shows yellow tipping of the ﬂame. It also shows the ﬂame higher than 1/2 the glass panel height.

WARNING: If yellow tipping occurs, your heater could pro duce increased levels of carbon monoxide.

NOTICE: Do not mistake orange ﬂames with yellow tipping. Dirt or other ﬁne particles enter the heater and burn causing brief patches of orange ﬂame.

If burner ﬂame pattern is incorrect, as shown in Figure 21, page 13

turn heater off (see To Turn Off Gas to Appliance)

•

• see Troubleshooting, page 14

Pilot Burner

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110373-01E

Page 13

1/2 GLASS HEIGHT

CORRECT FLAME PATTERN

HIGH POSITION

1/2 GLASS HEIGHT

INSPECTING HEATER

1/2 GLASS HEIGHT

Continued

Figure 20 - Correct Burner Flame Pattern

Yellow Tipping

Figure 21 - Incorrect Burner Flame Pattern

CLEANING AND

MAINTENANCE

WARNING: Turn off heater

and let cool before cleaning.

CAUTION: You must keep

control areas, burner and circu-

We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSI. Your local computer store, hardware store or home center may carry compressed air in a can. You can use a vacuum cleaner in the blow position. If using com pressed air in a can, please follow the directions on the can. If you donʼt follow directions on the can, you could damage the pilot assembly.

1. Shut off the unit, including the pilot. Allow the unit to cool for at least thirty minutes.

2. Inspect burner, pilot for dust and dirt.

3. Blow air across the ports/slots and holes in the burner.

4. Never insert objects into the pilot tube.

Clean the pilot assembly also. A yellow tip on the pilot ﬂame indicates dust and dirt in the pilot as sembly. There is a small pilot air inlet about two inches from where the pilot ﬂame comes out of the pilot assembly (see Figure 22). With the unit off, lightly blow air through the air inlet. You may blow through a drinking straw if compressed air is not available.

lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualiﬁed service person.

Pilot

CAUTION: You must check

Assembly

and keep burner/venturi tubes clean of insect and insect nest. A clogged tube can lead to a ﬁre.

WARNING: Failure to keep

the primary air opening(s) of

(Propane/LP

Pilot Shown)

Pilot Air Inlet

Figure 22 - Pilot Inlet Air Hole

the burner(s) clean may result in sooting and property damage.

ODS/PILOT AND BURNER

Use a vacuum cleaner, pressurized air or small, soft bristled brush to clean.

BURNER PILOT AIR INLET

The primary air inlet holes allow the proper amount of air to mix with the gas. This provides a clean burning ﬂame. Keep these holes clear of dust, dirt and lint. Clean these air inlet holes prior to each heating season. Blocked air holes will create soot. We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualiﬁed service person.

110373-01E 13

www.desatech.com

Burner Tube

Ports/Slots

Figure 23 - Injector Holder On Burner

Tube

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.

Pilot Air Inlet Hole

Injector Holder

Page 14

TROUBLESHOOTING

WARNING: Turn off and unplug heater and let cool before servicing.

Only a qualiﬁed service person should service and repair heater.

CAUTION: Never use a wire, needle or similar object to clean

ODS/pilot. This can damage ODS/pilot unit.

Note: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM

When ignitor button is pressed, there is no spark at ODS/pilot

When ignitor button is pressed, there is spark at ODS/pilot but no ignition

ODS/pilot lights but ﬂame goes out when control knob is re leased

POSSIBLE CAUSE

Ignitor electrode positioned wrong

2. Ignitor electrode broken

3. Ignitor electrode not connected to ignitor cable

4. Ignitor cable pinched or wet

5. Piezo ignitor nut is loose

6. Broken ignitor cable

7. Bad piezo ignitor

1. Gas supply turned off or equipment shutoff valve closed

2. Control knob not in PILOT posi tion

3. Control knob not pressed in while in PILOT position

4. Air in gas lines when installed

5. Depleted gas supply

6. ODS/pilot is clogged

Gas regulator setting is not correct

1. Control knob not fully pressed in

2. Control knob not pressed in long

enough

3. Safety interlock system has been triggered

4. Equipment shutoff valve not fully open

5. Thermocouple connection loose at control valve

6. Pilot ﬂame not touching thermocouple, which allows thermocouple to cool, causing pilot ﬂame to go out. This problem could be caused by one or both of the following:

A) Low gas pressure B) Dirty or partially clogged

ODS/pilot

7. Thermocouple damaged

8. Control valve damaged

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REMEDY

1. Replace pilot assembly

2. Replace pilot assembly

3. Reconnect ignitor cable

4. Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry

5. Tighten nut holding piezo ignitor to heater cabinet. Nut is located inside heater cabinet at top

6. Replace ignitor cable

7. Replace piezo ignitor

1. Turn on gas supply or o pen equipment shutoff valve

2. Turn control knob to PILOT position

3. Press in control knob while in PILOT position

4. Continue holding down control knob. Repeat igniting operation until air is removed

5. Contact local propane/LP gas company

6. Clean ODS/pilot (see Cleaning and Maintenance, page 13) or replace ODS/pilot assembly

7. Replace gas regulator

1. Press in control knob fully

2. After ODS/pilot lights, keep con trol knob pressed in 30 seconds

3. Wait one minute for safety interlock system to reset. Repeat ignition operation

4. Fully open equipment shutoff valve

5. Hand tighten until snug, then tighten 1/4 turn more

6. A) Contact local propane/LP gas company

B) Clean ODS/pilot (see Clean-

ing and Maintenance, page 13) or replace ODS/pilot assembly

7. Replace pilot assembly

8. Replace control valve

110373-01E

Page 15

OBSERVED PROBLEM

Burner does not light after ODS/ pilot is lit

TROUBLESHOOTING

Continued

POSSIBLE CAUSE

1. Burner oriﬁce is clogged

2. Inlet gas pressure is too low

REMEDY

1. Clean burner (see Cleaning and Maintenance, page 13)

or replace burner oriﬁce

2. Contact local propane/LP gas company

Delayed ignition of burner

Burner backﬁring during combustion

Yellow flame during burner combustion

Slight smoke or odor during initial operation

Heater produces a whistling noise when burner is lit

1. Manifold pressure is too low

2. Burner oriﬁce is clogged

1. Burner oriﬁce is clogged or damaged

2. Inlet gas pressure is too low

3. Burner damaged

4. Gas regulator defective

1. Not enough air

2. Inlet gas pressure is too low

3. Gas regulator defective

1. Residues from manufacturing processes

1. Turning control knob to highest position when burner is cold

2. Air in gas line

3. Air passageways on heater blocked

4. Dirty or partial ly clogg ed burner oriﬁce

1. Contact local propane/LP gas company

2. Clean burner (see Cleaning and Maintenance, page 13) or replace burner oriﬁce

1. Clean burner (see Cleaning and Maintenance, page 13) or replace burner oriﬁce

2. Contact local propane/LP gas company

3. Replace burner

4. Replace gas regulator

1. Check burner for dirt and debris. If found, clean burner (see Cleaning and Mainte- nance, page 13)

2. Contact local propane/LP gas company

3. Replace gas regulator

1. Problem will stop after a few hours of operation

1. Turn control knob to lowest position and let warm up for a minute

2. Operate burner until air is removed from line. Have gas line checked by local propane/ LP gas company

3. Observe minimum installation clearances (see Figure 2, page 6)

4. Clean burner (see Cleaning and Maintenance, page 13) or replace burner oriﬁce

Heater produces a clicking/ticking noise just after burner is lit or shut off

110373-01E 15

1. Metal expanding while heating or contracting while cooling

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1. This is common with most heaters. If noise is excessive, contact qualiﬁed service person

Page 16

TROUBLESHOOTING

Continued

WARNING: 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.

IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors.

OBSERVED PROBLEM

He a ter pro d u ces un w a nted odors

Heater shuts off in use (ODS operates)

Gas odor even when control knob is in OFF position

Gas odor during combustion

POSSIBLE CAUSE

1. Heater burning vapors from paint, hair spray, glues, etc. (see IMPORTANT statement above)

2. Low fuel supply

3. Gas leak. Se e War ning

statement above

1. N o t e n o u g h f r e sh air is available

2. Low line pressure

3. O D S/ pi l o t i s p ar ti al ly clogged

1. Gas leak. Se e War ning

statement above

2. Control valve defective

1. Foreign matter between control valve and burner

2. Gas leak. Se e War ning

statement above

REMEDY

1. Ventilate room. Stop using odor causing products while heater is running

2. Reﬁll supply tank

3. Locate and correct all leaks (see Checking Gas Connec

tions for Permanent Gas Sup ply, page 10)

1. Open window and/or door for ventilation

2. Contact local propane/LP gas company

3. Clean ODS/pilot (see Cleaning and Maintenance, page 13)

1. Locate and correct all leaks (see Checking Gas Connec

tions for Permanent Gas Supply, page 10)

2. Replace control valve

1. Take apart gas tubing and remove foreign matter

2. Locate and correct all leaks (see Checking Gas Connec-

tions for Permanent Gas Sup ply, page 10)

Moisture/condensation noticed on windows

1. Not enough combustion/ven tilation air

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1. Provi de more com bustion

area. A minimum 10 square inches of ventilation air must be prov ided for ad equ a te combustion

110373-01E

Page 17

STORAGE

CAUTION: Disconnect heater fr om propane/LP supply tank(s).

When the propane/LP supply cylinder is not disconnected from the heater, the heater and the cylinder must be stored outdoors, in a well ventilated space, out of reach of children. Do not store in a building, garage or any other enclosed area.

Storage of the heater is permissible only if the cylinder is disconnected and removed from the heater. Cylinders must be stored outdoors out of reach of children. Do not store in a building, garage or any other enclosed area.

1. Store propane tank(s) in safe manner. See Chapter 5 of Standard for Storage and Han

dling of Liqueﬁed Petroleum Gases, ANSI/ NFPA 58. Follow all local codes. Always store

propane tanks outdoors.

2. Place plastic cover caps over brass ﬁttings on inlet connector and hose/regulator assembly.

3. Store in dry, clean and safe place. Do not store hose/regulator assembly inside heater combustion chamber.

4. When taking heater out of storage, always check inside of heater. Insects and small animals may place foreign objects in heater.

SPECIFICATIONS

REM10PT AND RH10PT

• Rating: 5,000/10,000 Btu/Hr (Variable)

• Type Gas: Propane/LP Only

• Ignition: Piezo

• Internal Regulator Setting: 8" W.C.

• Inlet Gas Pressure to Heater (inches of water):

14" Max., 11" Min.

• Supply Pressure to Regulator: Min (for input

adjustment) - 10 psi, Max - 200 psi

SERVICE HINTS

When Gas Pressure Is Too Low

• pilot will not stay lit

• burner will have delayed ignition

• heater will not produce speciﬁed heat

• propane/LP gas supply may be low

You may feel your gas pressure is too low. If so, contact your local propane/LP gas supplier.

TECHNICAL SERVICE

You may have further questions about installation, operation or troubleshooting. If so, contact DESA Heating Productsʼ Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready.

You can also visit DESA Heating Productsʼ techni cal service web site at www.desatech.com.

SERVICE PUBLICATIONS

You can purchase a service manual from the address listed on the back page of this manual. Send a check for $5.00 payable to DESA Heating Products.

ACCESSORIES

Purchase this heater accessory from your local dealer. If they cannot supply this accessory, call DESA Heating Products at 1-866-672-6040 for

referral information. You can also write to the ad dress listed on the back page of this manual.

FUEL GAS CONNECTOR - LPA4020

Connects regulator to all standard propane tanks. U.L. and A.G.A. listed.

ELECTRONIC IGNITOR KIT - GA435 Not Shown

For all piezo ignitor models. Provides easier lighting of the pilot.

REPLACEMENT PARTS

Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty.

PARTS UNDER WARRANTY

Contact authorized dealers of this product. If they canʼt supply original replacement part(s), call DESA Heating Productsʼ Technical Service Department at 1-866-672-6040.

When calling DESA Heating Products, have ready

• your name

• your address

• model and serial numbers of your heater

• how heater was malfunctioning

• type of gas used (propane/LP or natural gas)

• purchase date Usually, we will ask you to return the part to the factory.

PARTS NOT UNDER WARRANTY

Contact authorized dealers of this product. If they canʼt supply original replacement part(s) call DESA Heating Products at 1-866-672-6040 for referral information.

When calling DESA Heating Products, have ready

• model number of your heater

• the replacement part number

110373-01E 17

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Page 18

ILLUSTRATED PARTS BREAKDOWN

MODELS

REM10PT AND RH10PT

Pilot

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110373-01E

Page 19

PARTS LIST

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 17 of this manual.

KEY NO. PART NO. DESCRIPTION QTY.

1 098304-01 Screw, #10 x 3/8" • • 2 2 099467-09 Front Panel Assembly • 1

099467-10 Front Panel Assembly • 1 3 099318-04 Grill Guard • • 1 4 101108-01 Grill Guard Clip • • 2 5 102017-02 Bottom Glass Retainer • • 1 6 098260-11 Glass Panel • • 1 7 099319-02 Top Glass Retainer • • 1 8 110701-01 Elbow Fitting • • 1 9 099317-02 Deﬂector Unit • • 1 10 098271-09 Ignitor Cable • • 1

098249-01 Nut, M5 • • 2

11 12 110803-02 ODS/Pilot Assembly • • 1 13 104263-03 Burner • • 1 14 099387-11 Pilot Tubing • • 1 15 104259-06 Injector, 1 Piece • • 1 16 NJF-8C Hex Nut • • 1 17 099415-18 Pressure Regulator • • 1 18 104261-01 Burner Tubing • • 1 19 104264-01 Regulator Tubing • • 1 20 098522-18 Thermostat Gas Valve • • 1 21 ** Cabinet • • 1 22 097159-04 Piezo Ignitor • • 1

PARTS AVAILABLE - NOT SHOWN

100642-02 Hardware Assembly • • 1

LPA3090 Hose/Regulator Assembly

107888-04 Control Position Decal • • 1

116360-01 Lighting/Warning Tag Eng

116360-02 Lighting/Warning Tag Span

105345-01 Wire Tie • • 1 ** Not a ﬁeld replaceable part.

REM10PT

RH10PT

• • 1

110373-01E 19

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Page 20

110373 01

WARRANTY INFORMATION

KEEP THIS WARRANTY

Model

Serial No.

Date of Purchase

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 WARRANTIES FOR NEW AND FACTORY

RECONDITIONED PRODUCTS

New Products: DESA Heating Products warrants this heater and any parts thereof, to be free of defects in materials

and workmanship for two (2) years from the date of ﬁrst purchase, when operated and maintained in accordance with the manufacturer's instructions. These warranties are extended only to the original retail purchaser, when proof of purchase is provided.

Factory Reconditioned Heaters: DESA Heating Products warrants this factory reconditioned heater and any parts

thereof, to be free of defects in materials and workmanship for thirty (30) days from the date of ﬁrst purchase, when operated and maintained in accordance with the manufacturer's instructions. These warranties are extended only to the original retail purchaser, when proof of purchase is provided.

This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Heating Products Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA Heating Products who will provide original factory replacement parts. Failure to use original factory replacement parts voids this warranty. The heater MUST be installed by a qualiﬁed installer in accordance with all local codes and instructions furnished with the unit.

This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that fail or become damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel, diagnostic cost, labor, transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner.

TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUD ING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO TWO (2) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE; AND DESA HEATING PRODUCTSʼ LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA HEATING PRODUCTS SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential damages, so the above limitation on implied warranties or exclusion or limitation on damages may not apply to you.

This warranty gives you speciﬁc legal rights and you may also have other rights that vary from state to state.

For information about this warranty write:

2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 www.desatech.com

110373-01 Rev. E 07/05

NOT A UPC