Desa VMH10RNC Owner'S Operation And Installation Manual Download Page 18

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112462-01B

18

INSTALLATION

Continued

IMPORTANT:

 For natural gas, check gas line

pressure before connecting fireplace to gas line.
Gas line pressure must be no greater than 14 inches
of water. If gas line pressure is higher, heater regu-
lator damage could occur.

  CAUTION: Never connect pro-

pane/LP fireplace directly to the
propane/LP supply. This fireplace
requires an external regulator (not
supplied). Install the external regu-
lator between the fireplace and
propane/LP supply.

For propane/LP units, the installer must supply an
external regulator. The external regulator will re-
duce incoming gas pressure. You must reduce in-
coming gas pressure to between 11 and 14 inches
of water. If you do not reduce incoming gas pres-
sure, fireplace regulator damage could occur. In-
stall external regulator with the vent pointing down
as shown in Figure 21. Pointing the vent down
protects it from freezing rain or sleet.

  CAUTION: Use only new,

black iron or steel pipe. Inter-
nally-tinned copper tubing
may be used in certain areas.
Check your local codes. Use
pipe of 1/2" or greater diame-
ter to allow proper gas volume
to fireplace. If pipe is too small,
undue loss of volume will occur.

Installation must include an 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 Figures 22).

IMPORTANT:

 Install equipment shutoff valve in an

accessible location. The equipment shutoff valve is
for turning on or shutting off the gas to the appliance.
Check your building codes for any special require-
ments for locating equipment shutoff valve to fire-
places.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from go-
ing into pipe. Excess sealant in pipe could result
in clogged fireplace valves.

Propane/LP
Supply Tank

External Regulator

Figure 21 - External Regulator With Vent

Pointing Down

Vent Pointing Down

* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See 

Ac-

cessories,

 page 40.

Figure 22 - Gas Connection

CSA Design-
Certified Equipment
Shutoff Valve With
1/8" NPT Tap*

3" Minimum

Approved
Flexible Gas
Line

Pipe Nipple   Cap   Tee Joint

Propane/LP

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

NATURAL

From Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)

Sediment Trap

  WARNING: Use pipe joint

sealant that is resistant to liquid
petroleum (LP) gas.

We recommend that you install a sediment trap in
supply line as shown in Figure 22, page 18. Lo-
cate sediment trap where it is within reach for
cleaning. Install in piping system between fuel sup-
ply and heater. Locate sediment trap where trapped
matter is not likely to freeze. A sediment trap traps
moisture and contaminants. This keeps them from
going into fireplace controls. If sediment trap is
not installed or is installed wrong, fireplace may
not run properly.

Summary of Contents for VMH10RNC

Page 1: ...ot touch any electrical switch do not use any phone in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier ca...

Page 2: ...n aftermarket permanently located manufactured mobile home where not prohibited by local codes This appliance is only for use with the type of gas indicated on the rating plate This appliance is not c...

Page 3: ...tainsand orgenerateschemicals known to the State of California to cause cancer or birth defects or other reproductive harm IMPORTANT Read this owner s manualcarefullyandcompletely before trying to as...

Page 4: ...r furniture 10 This fireplace needs fresh air ventilation to run properly This fireplace has an Oxygen Deple tion Sensing ODS safety shutoff system The ODS shuts down the fireplace if not enough fresh...

Page 5: ...Y PILOT This fireplace has a pilot with an Oxygen Deple tion Sensing ODS safety shutoff system The ODS pilot is a required feature for vent free room fireplaces The ODS pilot shuts off the fireplace i...

Page 6: ...been completed 2 Cut two plastic straps to remove the log from the firebox cavity 3 An optional blower is available See Acces sories page 40 Install optional blower now Follow installation instruction...

Page 7: ...and windows may provide enough fresh air for combustion and ven tilation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is defi...

Page 8: ...maximum Btu Hr the space can support You must provide ad ditional fresh air Your options are as follows A Rework worksheet adding the space of an adjoin ing room If the extra space provides an uncon f...

Page 9: ...ry heat source If you have a central heating system you may run system s circulating blower while using heater This will help circulate the heat throughout the house In the event of a power outage you...

Page 10: ...valve test gauge connection ground joint union sediment trap tee joint pipe wrench ACSAdesign certified equipment shutoff valve with 1 8 NPT tap is an acceptable alternative to test gauge connection P...

Page 11: ...ns included with blower accessory Note If not installing blower accessory you may wish to run electrical wiring to your fire place for future blower installation see Ac cessories page 40 Use only appr...

Page 12: ...stible materials should never over lap the firebox front facing INSTALLATION Continued Figure 9 Attaching Fireplace to Wall Studs Nailing Flanges Nails or Wood Screws Wall Studs WARNING Do not allow a...

Page 13: ...screws provided and attach fireplace base to wooden base There are holes provided on each side and floor of firebox see Figure 11 8 Place base assembly next to wall at installa tion location 9 Remove...

Page 14: ...upper louver see Fig ure 14 Save these screws 3 Pull upper louver straight out from the cabi net Be careful not to scratch the paint Set louver and screws aside 4 Open lower louver door by swinging do...

Page 15: ...e wire harness through the hole in left side of baffle Pull wire harness through lower opening of firebox see Figure 15 8 Insert the 4 wire harnesses into one of the round holes in the rear of the fan...

Page 16: ...nd in hardware kit into one of the holes on rear of fan switch cover The other hole is for a strain relief clamp not supplied to secure incoming electrical supply 3 Follow steps 3 through 7 in Install...

Page 17: ...erson must connect fire place to gas supply Follow all local codes WARNING Never connect natural gas fireplace to private non utility gas wells This gas is commonly known as well head gas ATTACHING WO...

Page 18: ...be upstream from heater see Figures 22 IMPORTANT Install equipment shutoff valve in an accessible location The equipment shutoff valve is for turning on or shutting off the gas to the appliance Check...

Page 19: ...gas line into fireplace base area while replacing branch support Make sure the entire flexible gas line is in fireplace base area INSTALLATION Continued Figure 23 Attaching Flexible Gas Line to Equipm...

Page 20: ...id to all joints Bubbles forming show a leak 4 Correct all leaks at once INSTALLATION Continued Figure 24 Equipment Shutoff Valve ON POSITION OFF POSITION Open Closed Equipment Shutoff Valve Figure 25...

Page 21: ...isconnecting Wires From Control Valve Figure 28 Attaching Battery to Receiver Battery Clip 9 Volt Battery Receiver Terminal Wires Control Valve Jumper Wire White Wire to TH Terminal on Control Valve R...

Page 22: ...air con ditioning ducts 5 Gently remove the cover of the thermostat from the base Grasp the sides of the cover firmly and pull to separate from the base 6 Feed the electrical wires through the rectang...

Page 23: ...er see Figure 35 Do not allow log to contact flame If flame contacts log soot will be created 2 Reattach screen by placing the notches in the screen frame over the shoulder screws and pushing down INS...

Page 24: ...e control knob may need to be pressed in for 30 seconds or more This will allow air to bleed from the gas system If control knob does not pop out when released contact a qualified service per son or g...

Page 25: ...blower will not operate In the AUTO position the blower will start when the thermostat senses a sufficient increase in firebox temperature Note Your fireplace and thermostat blower will not turn on a...

Page 26: ...position Press in control knob for five 5 seconds see Figure 40 Note You may be running this fireplace for the first time after hooking up to gas supply If so the control knob may need to be pressed...

Page 27: ...Light ing Instructions on page 26 OPERATING FIREPLACE Continued 1 After lighting let pilot flame burn for about one minute Turn control knob to ON posi tion Slide the remote selector switch to the REM...

Page 28: ...HERMOSTAT SERIES MODEL GHRCTB The hand held remote can be operated using either the manual mode MANU or thermo static mode AUTO see Figure 45 To select Fahrenheit Centigrade mode display carefully pre...

Page 29: ...the thermocouple to cool When the thermocouple cools the fireplace will shut down If pilot flame pattern is incorrect as shown in Figure 48 turn fireplace off see To Turn Off Gas to Appli ance page 2...

Page 30: ...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 and primary air inlet holes on injector holder for dust and dirt se...

Page 31: ...osition 4 Air in gas lines when in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct REMEDY 1 Reconnect ignitor cable 2 Free ignitor cable if...

Page 32: ...Manifold pressure is too low 2 Burner orifice is clogged 1 Burner orifice is clogged or damaged 2 Damaged burner 3 Gas regulator defective 4 Inlet gas pressure is too low REMEDY 1 Press in control kno...

Page 33: ...heated vapors from furniture polish wax carpet cleaners etc may turn into white powder residue 1 Not enough combustion ven tilation air REMEDY 1 Problem will stop after a few hours of operation 2 Che...

Page 34: ...ially clogged 1 Gas leak See Warning statement at top of page 2 Control valve defective 1 Foreign matter between con trol valve and burner 2 Gas leak See Warning statement at top of page REMEDY 1 Repl...

Page 35: ...bleshooting If so contact DESA Heating Products 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 Heati...

Page 36: ...TAT CONTROLLED MODELS VMH10TPC VMH10TNC SHOWN EFS10TPA AND EFS10TNA 37 35 13 11 10 7 29 1 3 2 3 41 6 32 19 6 33 8 8 40 30 21 17 34 15 16 7 27 5 12 25 24 8 9 26 18 8 28 31 38 23 14 39 20 4 36 8 22 AAA...

Page 37: ...01 Electronic Ignitor Bracket 1 18 M11084 38 M11084 38 Screw 8 18 x 3 8 3 19 104335 01CK 104335 01CK Outer Shell Base 1 20 Firebox Floor 1 21 099415 04 099415 10 Gas Regulator 1 22 099123 01 099123 0...

Page 38: ...ODELS VMH10RPC VMH10RNC SHOWN EFS10RPA EFS10RNA TPTH TPTH TP TP TH TH 30 12 20 10 9 7 23 1 3 2 7 3 35 6 8 14 6 26 20 4 25 5 41 17 39 20 18 40 19 31 21 15 32 24 38 22 33 13 16 36 37 34 27 20 11 29 28 2...

Page 39: ...918 02 Regulator Pilot 1 18 098271 10 098271 10 Ignitor Cable 1 19 101004 13 101004 12 Injector 1 20 M11084 26 M11084 26 Screw Hex Head 10 16 x 3 8 36 21 108135 02 108135 02 Valve Bracket 2 22 103781...

Page 40: ...h edges of wall opening BLACK TRIM KIT GAB6094 Not Shown For all models Optional three sided black trim kit for custom and recessed installations when unit is on the floor Provides a finished appearan...

Page 41: ...r appliance ACCESSORIES Continued RECEIVER AND HAND HELD THERMOSTAT REMOTE CONTROL KIT GHRCTB For all Remote Ready Models Allows the fire place to be operated in a manually or thermostati cally contro...

Page 42: ...____________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________...

Page 43: ...____________________________________________________ ___________________________________________________________ ___________________________________________________________ ___________________________...

Page 44: ...or DESA Heating Products who will provide original factory replacement parts Failure to use original factory replacement parts voids this warranty The fireplace MUST be installed by a qualified insta...

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