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Desa VMH10TNB Owner'S Operation And Installation Manual Download Page 14

107032

For more information, visit www.desatech.com

For more information, visit www.desatech.com

14

Red

Red

Fan Switch

(Auto/Off/On)

Blue

Blue

Thermostat

Switch

(N.O.)

Green

White

Green

White

On

110/115 

V.A.C.

Blower

Motor

Black 

Off

1

2

3

Auto

Figure 20 - Installing Blower Bracket Assembly

Figure 19 - Wiring Diagram For Blower Accessory Built-In
Installation

INSTALLATION

Continued

Blower Bracket
Assembly

Screw

Wire Harness

Plastic
Wire Strap

Wire Harness

Switch
Plate

Switch

Clamp Connector
(not included)

Blue

Red

Outlet Receptacle
(Not Supplied)

Figure 21 - Removing Upper Louver  Assembly

Upper Louver
Assembly

Brass
Screws

3.

A licensed electrician must follow the wiring diagram to con-
nect incoming electrical supply to fan kit wiring harness (see
Figure 19).

4.

Plug power cord to the outlet receptacle (not provided) as shown
in Figure 20. Wind the extra cable in power cord and and tie it
up with the plastic wire strap (see Figure 20). Set the cable
bundle between the burner bracket and outer casing, away from
the burner.

5.

Test to make sure the blower is working properly.

6.

Reinstall upper louver assembly (see Figure 15, page 12) and
close lower louver.

INSTALLING OPTIONAL BLOWER
ACCESSORY GA3450T IN THERMOSTAT-
CONTROLLED MODELS

Removing Upper Louver Assembly

To install the blower accessory, you must first remove the upper
louver assembly.

1.

Remove 4 screws from upper louver assembly (see Figure 21).
Save these screws.

2.

Pull upper louver assembly straight out from the cabinet. Be care-
ful not to scratch the paint. Set louver assembly and screws aside.

Blower Bracket
Mounting Holes

Power
Cord

Extension Cord

Use extension cord if needed. The cord must have a three-prong,
grounding plug and a three-hole receptacle. Make sure cord is in good
shape. It must be heavy enough to carry the current needed. An
undersized cord will cause a drop in line voltage. This will result in
loss of power and overheating. Use a No. 16 AWG cord for lengths
less than 50 feet.

Lower Louver Door

Black

INSTALLATION

Installing Blower Accessory GA3450T in Remote-Ready Models (Cont.)
Installing Blower Accessory GA3450T in Thermostat-Controlled Models

Summary of Contents for VMH10TNB

Page 1: ...lteration service or maintenance can cause injury or property damage Refer to this manualforcorrectinstallationand operational procedures For as sistanceoradditionalinformation consult a qualified installer ser vice agency or the gas supplier WARNING This is an unvented gas fired heater It uses air oxy gen from the room in which it is installed Provisionsforadequate combustion and ventilation air ...

Page 2: ...ATING FIREPLACE 23 INSPECTING BURNERS 27 SAFETY INFORMATION DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of carbon monoxide poisoning resemble the flu with headaches dizziness or nausea If you have these signs the fireplace may not be working properly Get fresh air at once Have fireplace serviced Some people are more affected by carbon monoxide than othe...

Page 3: ... carpet cleaner or similar products turn fireplace off If heated the vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture 10 This fireplace needs fresh air ventilation to run properly This fireplace has an Oxygen Depletion Sensing ODS safety shutoff system The ODS shuts down the fireplace if not enough fresh air is available See Air for C...

Page 4: ...IGNITION SYSTEM This fireplace has a piezo ignitor This system requires no matches batteries or other sources to light fireplace THERMOSTATIC HEAT CONTROL FOR THERMOSTAT CONTROLLED MODELS Thermostat Controlled models have a thermostat sensing bulb and acontrolvalve Thethermostatwillautomaticallymodulatetheheat output to maintain a consistent room temperature This results in greater fireplace comfo...

Page 5: ... Removing Screen WARNING Always have branch support and screen in place before operating fireplace This pre vents excessive temperatures on fireplace surfaces WARNING Failure to position the parts in accor dance with these diagrams or failure to use only parts specifically approved with this fireplace may result in property damage or personal injury Screen Burner Support With Log Locator Tabs Bran...

Page 6: ...erm 6 x 10 11 kg per pa sec m2 or less with openings gasketed or sealed and b weather stripping has been added on openable win dows and doors and c caulking or sealants are applied to areas such as joints around window and door frames between sole plates and floors between wall ceiling joints between wall panels at penetrations for plumbing electrical and gas lines and at other openings If your ho...

Page 7: ...Inside Building B Vent room directly to the outdoors See Ventilation Air From Out doors page 8 C Install a lower Btu Hr fireplace if lower Btu Hr size makes room unconfined IftheactualBtu HrusedislessthanthemaximumBtu Hrthespacecansupport thespaceisanunconfinedspace Youwillneednoadditionalfreshairventilation AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilation Air From Inside B...

Page 8: ...formfromtoomuchmoisture SeeAirfor Combustion and Ventilation pages 6 through 8 Note Your fireplace is designed to be used in zero clearance installations Wallorframingmaterialcanbeplaceddirectlyagainst any exterior surface on the rear sides or top of your fireplace except where standoff spacers are integrally attached If standoff spacers are attached to your fireplace these spacers can be placed d...

Page 9: ... fireplace is to be used with an optional mantel the installation instructions included with your mantel shows an CSA approved method of attaching the fireplace mantel system to a wall IMPORTANT Only use optional cabinet or corner mantels specified in this manual Purchase the optional mantel from your dealer see Accessories pages 38 and 39 If your fireplace is to be recessed into the wall see Buil...

Page 10: ...ipment shutoff valve The flexible gas line must be the last item installed on the gas piping 4 If you have not assembled firebox follow instructions on page 5 5 Carefully set fireplace in front of rough opening with back of fireplace inside wall opening 6 Attach flexible gas line to fireplace gas regulator See Con necting Fireplace to Gas Supply page 18 7 Bend four nailing flanges on outer casing ...

Page 11: ...place on wood base 3 Place mantel around fireplace base assembly 4 Assemble brass trim kit See Assembling Brass Trim page 12 5 Firmly snap brass trim kit on shoulder screws Shoulder screws are located on fireplace cabinet see Figure 12 6 Align brass trim kit for flush fit around opening 7 Use two 3 wood screws provided and attach fireplace base to wooden base see Figure 12 8 Place base assembly ne...

Page 12: ...ghten both set screws on the adjusting plate with slotted screwdriver 7 Repeat steps 1 through 6 for other corner 8 Set brass assembly aside for later installation Figure 14 Assembling Brass Trim Side Brass Trim Top Brass Trim Mitered Edge Shim Set Screws Adjusting Plate Slot Figure 15 Removing Upper Louver Assembly and Branch Support Blower Bracket Mounting Holes INSTALLINGOPTIONALBLOWERACCESSORY...

Page 13: ...to Valve Cover Shield Figure 17 Wiring Diagram For Blower Accessory Standard Installation Red Red Fan Switch Auto Off On Blue Blue Thermostat Switch N O Green White Green White On 110 115 V A C Blower Motor Black Off 1 2 3 Auto 9 Install the switch plate on the valve cover shield with 2 10 screws provided see Figure 18 Route power cord out of the cabinet by inserting it through the bushing on the ...

Page 14: ... between the burner bracket and outer casing away from the burner 5 Test to make sure the blower is working properly 6 Reinstall upper louver assembly see Figure 15 page 12 and close lower louver INSTALLING OPTIONAL BLOWER ACCESSORY GA3450T IN THERMOSTAT CONTROLLED MODELS Removing Upper Louver Assembly To install the blower accessory you must first remove the upper louver assembly 1 Remove 4 screw...

Page 15: ...ushings found in hardware kit into both holes in rear of valve cover shield 2 Make sure the wire harness is firmly connected to the terminals on the blower bracket assembly Figure 23 Installing Blower Bracket Assembly 3 2 1 Wire Harness Valve Cover Shield Box Cover Wire Harness Switch Plate Blue Power Cord Red Switch Wiring Routing Hole in Baffle Blower Bracket Assembly Screw Baffle 3 Note the wir...

Page 16: ...ving Valve Cover Shield page 15 then 1 Install a snap bushing found in hardware kit into one of the holes on rear of valve cover shield The other hole is for a strain relief clamp not supplied to secure incoming electrical supply 2 Follow steps 2 through 6 in Installing BlowerAssembly page 15 Also remove black wire from middle switch terminal 2 3 Remove black plastic strain relief and power cord f...

Page 17: ...inting Down WARNING A qualified service person must con nect fireplace to gas supply Follow all local codes CAUTION Never connect propane LP fireplace directly to the propane LP supply This fireplace requires an external regulator not supplied Install the external regulator between the fireplace and pro pane LP supply For propane LP units the installer must supply an external regula tor The extern...

Page 18: ...ly NOTICE Most building codes do not permit con cealed gas connections A flexible gas line is pro vided to allow accessibility from the fireplace see Figure 31 The flexible gas supply line connection to the equipment shutoff valve should be accessible CONNECTING EQUIPMENT SHUTOFF VALVE TO HEATER CONTROL Installation Items Needed Phillips screwdriver sealant resistant to propane LP gas not provided...

Page 19: ... from gas supply piping sys tem 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 Pressurizesupplypipingsystembyeitheropeningpropane LPsup ply tank valve for propane LP gas or opening main gas valve lo catedonorneargasmeterfornaturalgas orusingcompressedair 4 Check all joints of gas supply piping system Apply n...

Page 20: ...valve Remote Ready Models see Figures 34 or 35 Apply noncorrosive leak detection fluid to all joints Bubbles forming show a leak 5 Correct all leaks at once 6 Light fireplace see Operating Fireplace pages 23 through 27 Check all other internal joints for leaks 7 Turn off fireplace see To Turn Off Gas to Appliance page 24 for Thermostat Controlled Models or page 25 for Remote Ready Models OPTIONAL ...

Page 21: ... to the TH terminal on the control valve Make sure that wire terminals are in the posi tions on your unit as pictured in Figure 41 If wires are not crossed the thermostat will not work 3 Route the 25 ft wire to a convenient location to mount your thermostat no outside wall IMPORTANT The wire may be shortened but must not be lengthened The thermostat should be mounted 54 above the floor in a loca t...

Page 22: ...onically calibrated at the factory No ad justment or leveling is necessary Figure 42 Back View of Thermostat Base Feed wires through rectangular slots W R Figure 43 Thermostat Base Terminals W and R Terminal W Terminal R OPTIONAL WALL SWITCH GWMS2 Remote Ready Models Only WARNING Do not connect this switch to any electrical source Electrical shock and or fire hazard will occur 1 Connect one termin...

Page 23: ...hours 1 STOP Read the safety information above 2 Make sure equipment shutoff valve is fully open 3 Turn control knob clockwise Clockwise to the OFF position 4 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Fol low B in the safety information above If you don t smell gas go to the next step 5 Turn control knob counterclockwise C clockwise ...

Page 24: ...he OFF posi tion the blower will not operate In the AUTO position the blower will start when the thermostat senses a sufficient in crease in firebox temperature Note Your fireplace and thermostat blower will not turn on and off at the same time The fireplace may run for several minutes before the blower turns on After the heater modulates to the pilot position the blower will continue to run The b...

Page 25: ... the floor If you smell gas STOP Fol low B in the safety information column 2 page 24 If you don t smell gas go to the next step 6 Press in and turn control knob counterclockwise to the PILOT position Press in control knob for five 5 seconds see Figure 49 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 in for 30...

Page 26: ... press the ON OFF buttons on the hand held remote control unit for up to 3 seconds to assure proper operation GHRC Series Operation 2a Press the ON OFF button to turn the burners on and off When turning burners off the pilot will remain lit OPERATING FIREPLACE REMOTE READY MODELS Optional Remote Operation GWMT1 Wall Mounted Thermostat Optional Figure 52 Setting the Selector switch Control Knob and...

Page 27: ...stat senses a sufficient in crease in firebox temperature Note Your fireplace and thermostat blower will not turn on and off at the same time The fireplace may run for several minutes before the blower turns on After the heater modulates to the pilot position the blower will continue to run The blower will shut off after the firebox temperature decreases Note It is safe to operate fireplace with b...

Page 28: ... minutes 2 Inspect burner pilot and primary air inlet holes on injector holder for dust and dirt see Figure 59 3 Blow air through the ports slots and holes in the burner 4 Check the injector holder located at the end of the burner tube again Remove any large particles of dust dirt lint or pet hair with a soft cloth or vacuum cleaner nozzle 5 Blow air into the primary air holes on the injector hold...

Page 29: ...d ODS pilot 6 Thermocouple connection loose at con trol valve 7 Thermocouple damaged 8 Control valve damaged REMEDY 1 Reconnect ignitor cable 2 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 3 Replace ignitor cable 4 Replace piezo ignitor 5 Replace pilot assembly 6 Replace pilot assembly 1 Turn on gas supply or open equipment shutoff valve 2 Turn control knob to PILOT ...

Page 30: ...intenance page 28 3 Replace gas regulator 1 Turn control knob to LO position and let warm up for a minute 2 Operate burner until air is removed from line Have gas line checked by local natural gas company 3 Observe minimum installation clear ances see pages 9 through 11 4 Clean burner see Cleaning and Mainte nance page 28 or replace burner orifice 1 Turn fireplace off when using furniture polish w...

Page 31: ... line pressure 3 ODS pilot is partially clogged 1 Gas leak See Warning statement at top of page 2 Control valve defective 1 Foreign matter between control valve and burner 2 Gas leak See Warning statement at top of page REMEDY 1 Replace 9 volt batteries in receiver and remote control 1 This is common with most fireplaces If noise is excessive contact qualified ser vice person 1 Open window to vent...

Page 32: ...8 32 5 8 x 27 13 16 x 11 5 8 32 5 8 x 27 13 16 x 11 5 8 32 5 8 x 27 13 16 x 11 5 8 Weight pounds Fireplace 44 1 2 lbs 44 1 2 lbs 44 1 2 lbs 44 1 2 lbs Shipping 48 lbs 48 lbs 48 lbs 48 lbs For purpose of input adjustment SPECIFICATIONS SPECIFICATIONS SERVICE HINTS TECHNICAL SERVICE SERVICE HINTS When Gas Pressure Is Too Low pilot will not stay lit burners will have delayed ignition fireplace will n...

Page 33: ... International s Technical Service Department at 1 866 672 6040 When calling DESA International have ready your name your address model and serial numbers of your fireplace how fireplace 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 Contactauthorizeddealersofthisproduct Iftheycan tsuppl...

Page 34: ...BREAKDOWN THERMOSTAT CONTROLLED MODELS VMH10TPB VMH10TNB EFS10TP and EFS10TN ILLUSTRATED PARTS BREAKDOWN Thermostat Controlled Models VMH10TPB VMH10TNB EFS10TP and EFS10TN 23 28 31 8 35 37 13 14 3 8 32 11 10 4 7 29 1 3 2 3 42 9 17 19 6 22 30 21 40 27 38 38 16 15 18 24 5 33 26 25 20 4 4 34 36 12 24 12 1 25 14 8 39 41 ...

Page 35: ...01 103671 01 Outlet Tube 1 17 100587 01 100587 01 Brass Screw 6 x 3 8 4 18 098303 02 098303 02 Regulator Screw 2 19 104335 01CK 104335 01CK Outer Shell Base 1 20 102649 02 102649 02 Branch Support 1 21 099415 04 099415 10 Gas Regulator 1 22 102875 01 102875 01 Regulator Bracket 1 23 101381 01 101381 01 Valve Cover and Piezo 1 24 099387 03 099387 03 Pilot Tube 1 25 098271 06 098271 06 Ignitor Cable...

Page 36: ...D PARTS BREAKDOWN REMOTE READY MODELS VMH26PRA VMH26NRA Shown EFS26PR and EFS26NR ILLUSTRATED PARTS BREAKDOWN Remote Ready Models VMH26PRA VMH26NRA EFS26PR and EFS26NR 39 37 38 4 22 40 32 11 28 30 12 7 35 25 10 9 7 23 1 2 20 20 8 14 6 24 33 19 34 31 31 13 41 21 5 26 18 15 27 20 3 20 29 16 18 3 17 42 36 4 4 20 ...

Page 37: ...45 01 102445 01 Piezo 1 17 099918 02 Regulator Pilot 1 18 098271 10 098271 10 Ignitor Cable 1 19 107186 01 107186 02 Injector 1 20 M11084 26 M11084 26 Screw Hex Head 10 x 3 8 25 21 098249 01 098249 01 Nut M5 6 22 103781 02 103781 01 Gas Valve 1 23 102639 01 102639 01 Baffle 1 24 101628 01 101628 01 Flexible Connector 1 25 104305 01 104305 01 Control Shield 1 26 103295 03BR 103295 03BR Screen Assem...

Page 38: ...s Equipment shutoff valve with 1 8 NPT tap Fits 1 2 NPT pipe BRASS TRIM KIT GA6095 For all models Optionalfour sidedbrass trim kit for recessed built in installations when unit is raised off of the floor Pro vides a finished appearance by covering rough edges of wall opening CABINET MANTEL WITH BUILT IN HEARTH BASE AND ROUNDED LEG STYLING GMC61U Series Unfinished GMC60F Series Oak Finished Appeara...

Page 39: ...ll models Your vent free gas appliance requires regular cleaning and maintenance to prevent performance problems This kit gives you the tools and instructions to make it easy to clean all critical areas of your appliance WALL MOUNT THERMOSTAT SWITCH GWMT1 Not Shown For all Remote Ready Models The desired comfort setting can be selected on the wall thermostat and the fireplace will automatically cy...

Page 40: ..._____________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ __________________________________________________________...

Page 41: ...ompleted College Completed Graduate School 13 Age of Purchaser Under 20 20 29 30 39 40 49 50 59 60 or Over 14 Buyer s total annual household income Under 15 000 15 000 to 19 999 20 000 to 34 999 35 000 to 49 999 50 000 to 74 999 75 000 to 99 999 100 000 and Over 15 Store where product was purchased Name ______________________________________ City _______________________ State __________ 16 In choo...

Page 42: ...107032 For more information visit www desatech com For more information visit www desatech com 42 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 TM Postage Required ...

Page 43: ..._______________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ ________________________________________________________...

Page 44: ...anyandallsuch other costs related to repairing a defective fireplace 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 INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR...

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