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www.desatech.com

119162-01A

6

AIR FOR COMbUSTION 

AND VENTILATION

 WARNING: This heater shall 

not  be  installed  in  a  confined 

space or unusually tight construc

-

tion unless provisions are provid

-

ed for adequate combustion and 

ventilation air. Read the following 

instructions to insure proper fresh 

air for this and other fuel-burning 

appliances in your home.

Today’s homes are built more energy efficient 

than ever. New materials, increased insulation and 

new construction methods help reduce heat loss 

in homes. Home owners weather strip and caulk 

around windows and doors to keep the cold air out 

and the warm air in. During heating months, home 

owners want their homes as airtight as possible.

While it is good to make your home energy effi-

cient, your home needs to breathe. Fresh air must 

enter your home. All fuel-burning appliances need 

fresh air for proper combustion and ventilation.

Exhaust fans, fireplaces, clothes dryers and fuel 

burning appliances draw air from the house to 

operate. You must provide adequate fresh air for 

these appliances. This will insure proper venting 

of vented fuel-burning appliances.

PROVIDING ADEQUATE 
VENTILATION 

The following are excerpts from 

National Fuel 

Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, 

Air for Combustion and Ventilation.

All spaces in homes fall into one of the three fol-

lowing ventilation classifications:

1.  Unusually Tight Construction

2.  Unconfined Space

3.  Confined Space

The information on pages 6 through 8 will help 

you classify your space and provide adequate 

ventilation. 

Unusually Tight Construction

The air that leaks around doors and windows 

may provide enough fresh air for combustion and 

ventilation. However, in buildings of unusually 

tight construction, you must provide additional 

fresh air.

Unusually tight construction is defined as 

construction where:

a.  walls and ceilings exposed to the out

-

side  atmosphere  have  a  continuous 
water  vapor  retarder  with  a  rating  of 
one perm (6 x 10

-11

 kg per pa-sec-m

2

) or 

less with openings gasketed or sealed 

and 

b.  weather stripping has been added on 

openable windows 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 home meets all of the three criteria 

above, you must provide additional fresh 
air.  See 

Ventilation  Air  From  Outdoors

page 8. 

If  your  home  does  not  meet  all  of  the 

three criteria above, proceed to Determin

-

ing 

Fresh-Air  Flow  For  Heater  Location

below. 

Confined and Unconfined Space

The National Fuel Gas Code, ANSI Z223.1/NFPA 

54 

defines a confined space as a space whose 

volume is less than 50 cubic feet per 1,000 Btu 

per hour (4.8 m

3

 per kw) of the aggregate input 

rating of all appliances installed in that space and 

an unconfined space as a space whose volume is 

not less than 50 cubic feet per 1,000 Btu per hour 

(4.8 m

3

 per kw) of the aggregate input rating of 

all appliances installed in that space. Rooms com-

municating directly with the space in which the 

appliances are installed*, through openings not 

furnished with doors, are considered a part of the 

unconfined space.

* Adjoining rooms are communicating only if 

there are doorless passageways or ventilation grills 

between them.

DETERMINING FRESH-AIR FLOW 
FOR HEATER LOCATION

Determining if You Have a Confined or 
Unconfined Space

Use this work sheet to determine if you have a 

confined or unconfined space.

Summary of Contents for VGC18NR

Page 1: ...l 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 call the fire department Installation and service must be performed by a quali fied installer service agency or the gas supplier INSTALLER Leave this manual with the appliance CONSUMER Retain this manual for future reference...

Page 2: ...pliance is for installation only in a solid fuel burning mason ry or UL127 factory built fireplace or in alistedvent less firebox enclosure It is design certified for these installationsinaccordance with ANSI Z21 11 2 Excep tion Do not install this appliance in a factory built fireplace that includes instructions stating it has not been tested or should not be used with unvented gas logs WARNING T...

Page 3: ...icals 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 assemble op erate or service this fireplace Improper use of this fireplace can cause serious injury or death from burns fire explo sion electricalshockandcarbon monoxide poisoning DANGER Carbonmonoxide poisoning may lead to dea...

Page 4: ...se products may create a white powder residue within burner box or on adjacent walls and furniture 10 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 enough fresh air is not available See Air for Combus tion and Ventilation page 6 If heater keeps shutting off see Troubleshooting ...

Page 5: ... heaters This heater may also be operated as a vented decorative ANSI Z21 60 product by opening the flue damper Safety Device 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 Electronic Ignition System This heater has an electronic ig...

Page 6: ...ation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is defined as construction where a walls and ceilings exposed to the out side atmosphere have a continuous water vapor retarder with a rating of one perm 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 w...

Page 7: ... of Btu Hr used The space in the above example is a confined space because the actual Btu Hr used is more than the maxi mum Btu Hr the space can support You must provide additional fresh air Your options are as follows A Rework worksheet adding the space of an adjoin ingroom Iftheextraspaceprovidesanunconfined space remove door to adjoining room or add ventilation grills between rooms See Ventilat...

Page 8: ...gheater Thiswillhelp circulatetheheatthroughoutthe house In the event of a power outage you can use this heater as your primary heat source WARNING A qualified ser vice person must install heater Follow all local codes NOTICE State or local codes may only allow operation of this appliancein a vented configura tion Check your state or local codes WARNING Make sure the selector switch is in the OFF ...

Page 9: ... you bought heater for proper type heater WARNING This appliance is equipped for natural or pro pane LP gas Field conversion is not permitted INSTALLATION AND CLEARANCES For Vent Free Operation WARNING Maintain the minimum clearances If you can provide greater clearances from floor ceiling and adjoining wall Installation Continued Carefully follow the instructions below This will ensure safe insta...

Page 10: ...combustible material is more than 12 you may need the hood accessory to deflect heat away from your mantel shelf See Figure 5 and Figures 6 and 7 page 11 for minimum clearances IMPORTANT If you cannot meet these minimum clearances you must operate heater with chimney flue damper open Go to Installing Damper Clamp Accessory for Vented Operation page 12 Heat Resistant Material A Figure 5 Heat Resist...

Page 11: ...tel Clearances When Using Hood Minimum Non Combustible Material Minimum Non Combustible Material Height Distances to Underside of Mantel Top of Fireplace Opening Underside of Mantel Shelf 12 8 A 18 14 20 17 22 19 24 20 All minimum distances are in inches Log Set 24 30 36 Models 18 Model 2 1 2 6 8 10 Mantel Shelf Minimum Noncombustible Material 8 Min 12 15 18 All minimum distances are in inches Log...

Page 12: ...ory See chart below for minimum permanent flue opening you must provide Attach damper clamp so the minimum permanent flue opening will be maintained at all times Area of Various Standard Round Flues Diameter Area 5 20 sq inches 6 29 sq inches 7 39 sq inches 8 51 sq inches Chimney Minimum Permanent Height Flue Opening 6 to 15 39 sq inches 15 to 30 29 sq inches Damper Damper Clamp Damper Damper Clam...

Page 13: ...mortar joint of bricks 4 Remove heater base from fireplace 5 Drill holes at marked locations using 3 16 drill bit 6 Attach base through holes in front panel of base to fireplace floor using masonry screws provided in hardware package see Figure 12 7 Connect to gas supply See Connecting To Gas Supply Figure 11 Attaching Flexible Gas Hose to Heater Gas Regulator Gas Control Flexible Gas Hose if allo...

Page 14: ...iameter or greater to allow proper gas volume to heater Ifpipeistoosmall 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 Figure 14 IMPORTANT Install equipment shutoff valve in an accessible location The equipment shutoff valve is for turning...

Page 15: ...ve 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 either opening propane LP supply tank valve for propane LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air 4 Check ...

Page 16: ...on of remote accessory WARNING Turn off heater and let cool before handling any part of heater Make sure gas is turned of to unit Gas Meter Figure 17 Checking Gas Joints Natural Gas Only Thermostat Gas Valve or Control Valve Location Equipment Shutoff Valve Installation Continued 2 Carefully remove logs and set aside 3 Locate mounting screws on sides of heater base assembly and remove screws Set s...

Page 17: ...Receiver and Hand Held Remote Control Two 9 volt alkaline batteries not included are required to operate this heater with the wireless hand held remote control set One battery must be installed in the receiver and one in the hand held remote control unit Note Only use alkaline batteries Installing 9 Volt Battery in Receiver 1 Locate back of receiver behind receiver bracket mounted on base assembly...

Page 18: ...rial is a skin irritant Gloves or tweezers are recommended to prevent skin irritation Separate the pieces Place ember pieces one at a time over surface of flat front burner see Figure 27 page 19 Do NOTplace ember material anywhere else on the unit Use only ember material supplied with unit Excessive ember material may produce carbon monoxide or soot 7 Place right crossover log 7 onto pin in log 5 ...

Page 19: ...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 don t try to repair it call a qualified service tech nician or gas supplier 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 ap...

Page 20: ...g levels by using the equipment shutoff valve WARNING Make sure the remote selector switch is in the OFF position when you are away from home for long periods of time Heater will come on auto matically with selector switch in the ON position Note Home owners generally prefer to op erate their heater with the chimney damper closed This will put all the heat into the room However there may be times ...

Page 21: ...r TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1 Turn control knob clockwise to the OFF position 2a Set switch in the OFF position 2b If Using Optional Hand Held Remote Set selector switch in the OFF position to prevent draining battery Shutting Off Burners Only pilot stays lit You may shut off the burners and keep the pilot lit by doing one of the following 1 Turn control knob clockwise to th...

Page 22: ...in the center of the room facing towards the fireplace Note Do not hold the hand held remote for a long time Body temperature will affect its operation in the AUTO mode Safety Features When away from home for an extended period of time or as a child safety feature to prevent accidental ignition of the fireplace the receiver ON OFF REMOTE switch should be in the OFF position Auto Shutoff Feature 1 ...

Page 23: ...n Thermocouple Pilot Burner FRONT BURNER FLAME PATTERN Figure 36 shows correct front burner flame pat tern Figure 37 shows incorrect front burner flame pattern The incorrect burner flame pattern shows yellow tipping at top of blue flame WARNING If yellow tipping occurs your heater could pro duce increased levels of carbon monoxide If front burner flame pattern shows yellow tipping follow instructi...

Page 24: ...e unit to cool for at least thirty minutes 2 Inspect burner pilot and primary air inlet holes on injector holder for dust and dirt see Figure 38 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 prim...

Page 25: ...in PILOT position 4 Air in gas lines when installed 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 pinched by any metal or tubing Keep ignitor cable dry 3 Replace ignitor cable 4 Replace ignitor 5 Replace pilot assembly 6 Replace pilot assembly 7 Install new alkaline battery in electronic...

Page 26: ...eset Repeat ignition operation 4 Fully open equipment shutoff valve 5 A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 24 or replace ODS pilot assembly 6 Hand tighten until snug then tighten 1 4 turn more 7 Replace pilot assembly 8 Replace control valve 1 Contact local natural or pro pane LP gas company 2 Clean burner s see Cleaning and Maintena...

Page 27: ...s line checked by local natural or propane LP gas company 3 Observe minimum installa tion clearances see pages 9 through 11 4 Clean burners see Cleaning and Maintenance page 24 or replace burner orifice s 1 Turn heater off when using furniture polish wax carpet cleaners or similar products 1 Refer to Air for Combustion and Ventilation requirements page 6 1 Replace 9 volt batteries in re ceiver and...

Page 28: ... 1 Gas leak See Warning statement at top of page 2 Control valve or gas control defective 1 Foreign matter between con trol valve and burner 2 Gas leak See Warning statement at top of page 1 Hand held remote control is too close to heater REMEDY 1 Open window to ventilate room Stop using odor caus ing products while heater is running 2 Refill supply tank propane LP only 3 Locate and correct all le...

Page 29: ...e delayed ignition heater will not produce specified heat propane LP gas supply may be low Youmayfeelyourgaspressureistoolow Ifso con tact your local propane LP or natural gas supplier Technical Service You may have further questions about installation operation or troubleshooting If so contact DESA Heating Products Technical Service Department at 1 866 672 6040 When calling please have your model...

Page 30: ...2 01A 30 Illustrated Parts Breakdown Remote Ready Variable Control Models VGC18NR VGC18PR VGC24NR VGC24PR VGC30NR VGC30PR 29 1 27 23 29 29 3 2 29 4 5 10 11 23 21 22 20 14 13 16 15 17 12 29 26 9 6 7 8 29 17 19 29 29 24 28 25 ...

Page 31: ...Orifice Natural Front 1 111819 11 Elbow Orifice Natural Front 1 111819 10 Elbow Orifice Propane LP Front 1 15 118844 01CK Ignitor Bracket 1 16 111435 01 Electronic Ignitor 1 17 118618 01CK Pan Burner Bracket 1 18 098271 10 Ignitor Cable 1 19 118920 01CK Warning Label Bracket 1 20 112829 02 Air Shutter 1 21 14527 Gasket 1 22 119321 01 Venturi Tube 1 23 098249 01 ODS Nut 4 24 116559 04 Natural Gas A...

Page 32: ... 4 119417 05 119418 05 119419 05 Front Right Log 5 1 5 119417 03 119418 03 119419 03 Right Log 3 1 6 119417 06 119418 06 119419 06 Left Crossover Log 6 1 7 119417 07 119418 07 119419 07 Right Crossover Log 7 1 Illustrated Parts Breakdown and Parts List Log Sets for Models VGC18PR NR VGC24PR NR AND VGC30PR NR This list contains replaceable parts used in your heater When ordering parts follow the in...

Page 33: ...ed RECEIVER AND HAND HELD REMOTE CONTROL KIT HRC100 For all models Allows the fireplace to be turned on and off by using a hand held remote control A wall mount docking station is included WALL MOUNT THERMOSTAT SWITCH GWMT1 Not Shown For all models The desired comfort setting can be selected on the wall thermostat and the log heater will automatically cycle from pilot to the heat setting selected ...

Page 34: ...gular 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 Information video 108917 01 For all models A care and maintenance video is available by calling 1 866 672 6040 You may also email your request to productsupport desaint com Fire Crackle CF6 A Not Shown For all models Creates the ...

Page 35: ...____________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _________________________________...

Page 36: ...stalled 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...

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