Desa REM10PT Quick start guide

MODELS REM10PT AND RH10PT
10,000 Btu/Hr Thermostatically-Controlled Heater
BLUE FLAME VENT-FREE PROPANE/LP GAS HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
For more information, visit www.desatech.com
WARNING: If the information in this manual is not fol-


         


— WHAT TO DO IF YOU SMELL GAS
 
• Do not touch any electrical switch; do not use any

 

 

 -




www.desatech.com 110373-01F2
SAFETY INFORMATION
  -
-
teration, service or main-
tenance can cause in-

Refer to this manual for
correct installation and
 
For assistance or addi-
tional information con-
   


WARNING: This is an
  -
    
from the room in which


and ventilation air must
Air
for Combustion and Ven-
tilation


     
   
   
   

   
  
chemicals known to the State
of California to cause cancer or
-



   
    

    
   
   



 Early signs of carbon
monoxide poisoning resemble the u, 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 inuence
of alcohol and those at high altitudes.
TABLE OF CONTENTS
Safety Information ............................................... 2
Local Codes......................................................... 4
Unpacking............................................................ 4
Product Features................................................. 4
Product Identication........................................... 5
Propane/LP Supply.............................................. 5
Installation ........................................................... 5
Operating Heater................................................11
Inspecting Heater .............................................. 12
Cleaning and Maintenance................................ 13
Troubleshooting................................................. 14
Storage.............................................................. 17
Specications .................................................... 17
Service Hints ..................................................... 17
Technical Service............................................... 17
Service Publications .......................................... 17
Accessories ....................................................... 17
Replacement Parts ............................................ 17
Illustrated Parts Breakdown and Parts List........ 18
Warranty Information ...........................Back Cover

www.desatech.com
110373-01F 3
  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.
    
this heater or its controls can

WARNING: Do not use a
   
-

WARNING: If the recreational
or commercial enclosure does
not have a window or roof vent,
DO NOT USE THIS HEATER


-

-


    

-

  
     

     

  
    


Heater will remain hot for a time


-


    
    -


    
-
-

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 Lique-
ed 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 rellable 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 rellable propane/LP cylinder
indoors. A re 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-
ed in this manual. See Accessories, page 17.
SAFETY INFORMATION
Continued

www.desatech.com 110373-01F4
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 qualied 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 qualied 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.
SAFETY INFORMATION
Continued
LOCAL CODES
Install and use heater with care. Follow all lo-
cal 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
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
State of Massachusetts: The installation must
be made by a licensed plumber or gas tter in
the Commonwealth of Massachusetts.
Sellers of unvented propane or natural gas-red
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 bed-
room and bathroom installation in the Com-
monwealth of Massachusetts.
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.
PRODUCT FEATURES

This heater has a pilot with an Oxygen Deple-
tion 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.

This heater has a piezo ignitor. This system re-
quires no matches, batteries or other sources to
light heater.

www.desatech.com
110373-01F 5
PRODUCT
IDENTIFICATION
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 specications for the pro-
pane/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 Liqueed
Petroleum Gas, ANSI/NFPA 58 and/or CAN/CGA
B149.2. Your local library or re 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 rellable 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
overlling prevention device (OPD).
Figure 1 - Vent-Free Propane/LP Gas
Heater
Heater
Cabinet
Grill
Guard
Glass
Panel
Front
Panel
Control
Knob
Ignitor Button
Regulator Hose
INSTALLATION

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.
   
   
    

LOCATING HEATER
WARNING:Maintain the mini-

      
   

WARNING: Never install the
heater
 
• where curtains, furniture,
   


heater
 
 
• in windy or drafty areas
CAUTION: This heater cre-
    
currents move heat to wall sur-
    
heater next to vinyl or cloth wall
   


-

the air exist, may discolor walls


www.desatech.com 110373-01F6
CAUTION: If you install the

 

    

For convenience and efciency, install heater
• where there is easy access for operation, inspec-
tion and service
• in coldest part of room
INSTALLATION
Continued
36"
3"
FLOOR
CEILING
Minimum
Minimum To Top Surface
Of Carpeting, Tile Or Other
Combustible Material
6"
Minimum
From
Sides Of
Heater
Right
Side
Left
Side
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
Mounting
Screw
Locations
8 7/8"
Minimum To
Maintain 6"
Clearance
From Wall
7 3/4"
20 1/4"
Minimum To
Maintain 3"
Clearance
From Floor
FLOOR
JOINING WALL

Note: Wall anchors and mounting screws are
in hardware package. The hardware package is
provided with heater.

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.

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 rst) into hole. Tap
anchor ush 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.
Figure 4 -
Folding Anchor
Figure 5 - Popping
Open Anchor Wings
For Thin Walls
Thin
Walls
(1/4"
to 1/2"
thick)
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

1. Determine where you will locate heater.
WARNING: Maintain mini-

     
-

2. Mark two mounting screw locations on wall
(see Figure 3).

www.desatech.com
110373-01F 7
5. Tighten two screws until 1/16" space (thick-
ness of penny) is between screwheads and wall
(see Figure 6).
INSTALLATION
Continued
Figure 6 - Tightening Anchors
1/16"
Space
Thin or Thick
Wall (thick
wall shown)
Solid
Wall
Figure 7 - Location Of Keyhole Slots On
Back Panel Of Heater
Keyhole Slots
Figure 8 - Removing Front Panel Of
Heater

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.

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.

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.
6. Insert bottom anchor screw through back panel
into bottom anchor or drilled hole (see Figure 9).
7. Tighten screw until heater is rmly 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).
Figure 9 - Installing Bottom Mounting
Screw

www.desatech.com 110373-01F8
INSTALLATION
Continued


WARNING: Review and un-
    
Safety Information
-



and connections for leaks after


    

    

    


    -




IMPORTANT: You must use a propane/LP gas
supply cylinder that is compatible with the connec-
tion device provided with the hose and regulator.
1. Remove 90° gas tting 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 tting. Do not over
tighten connection to regulator. The regulator
body could be damaged.
4. Provide propane/LP supply system (see Pro-
pane/LP Supply, page 5).
5. Connect fuel gas tting on hose/regulator assem-
bly to propane/LP tank(s). Turn fuel gas tting
counterclockwise into threads on tank. Tighten
rmly using a wrench. IMPORTANT: Position
regulator so that hose leaving the regulator is
in a horizontal position (see Figure 11). This
places the regulator vent in the proper position
to protect it from the weather.
6. Connect hose to heater inlet. Tighten rmly
using a wrench. You must use the regulator
supplied with heater.
7. Open propane/LP supply valve on propane/LP
tank(s) slowly. Note: If not opened slowly,
excess-ow check valve on propane/LP tank
may stop gas ow. If this happens, close pro-
pane/LP supply valve and open again slowly.
8. Check all connections for leaks. Apply a noncor-
rosive leak detection uid to gas joints. Bubbles
forming show a leak that must be corrected.
9. Close propane/LP supply valve.
Propane/LP
Tank
Propane/LP
Supply Valve
Regulator
Hose To
Heater
Fuel Gas
Fitting
Figure 11 - Regulator Position
Figure 10 - Gas Connection
Heater
Cabinet
Pressure
Regulator
Elbow
Hose To
Regulator
Hose Fitting
Apply Sealant To
This End Only


   
    


 -

     


www.desatech.com
110373-01F 9
INSTALLATION
Continued
CAUTION:Neverconnectheater

    
   


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-certied equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. The optional CSA design-
certied equipment shutoff valve can be purchased
from your dealer. See Accessories, page 17.
If installing to a xed 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.
CAUTION: Use only new,
     -


     




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.
    


Figure 12 - External Regulator With Vent
Pointing Down
External
Regulator
Propane/LP
Supply Tank
Vent
Pointing
Down
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test Gauge Connection*
Heater
Cabinet
Pressure
Regulator
Tee
Joint
Pipe
Nipple
Cap
Ground
Joint
Union
3/8" NPT
Pipe
Nipple**
Equipment
Shutoff Valve*
From
External
Regulator
(11" W.C.
to 14" W.C.
Pressure)
Figure 13 - Gas Connection
Sediment Trap
3"
Min.
* A CSA design-certied equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certied equipment shutoff valve from your
dealer. See Accessories, page 17.
** The 90º elbow on the regulator is removed and
the 3/8" NPT pipe nipple is installed in its place.

www.desatech.com 110373-01F10
INSTALLATION
Continued
Figure 14 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
CHECKING GAS CONNECTIONS


and connections, internal and
external to unit, for leaks after
 

WARNING: Never use an

-



CAUTION: Make sure exter-


   
Connecting to Permanent Gas
Supply




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 uid 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 ttings for
leaks.


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 uid to all joints.
Bubbles forming show a leak.
4. Correct all leaks at once.

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 uid 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.
Propane/LP
Supply
Tank
Equipment
Shutoff
Valve
Control Valve Location
Figure 15 - Checking Gas Joints