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110882-01K

12

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

If reasons number 1 or 2 apply to you, you must 

permanently open chimney flue damper. You must 

install the damper clamp accessory (to order, see 

Accessories

, page 42). This will insure vented 

operation (see Figure 10). The damper clamp will 

keep damper open. Installation instructions are 

included with clamp accessory. 

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. 

INSTALLATION

Continued

Figure 10 - Attaching Damper Clamp

Damper 
Clamp

Damper

Manufactured 

Fireplace

Masonry Fireplace

Damper

Damper

INSTALLING HEATER BASE 
ASSEMBLY

 WARNING: You must secure 

this heater to fireplace floor. If 

not, heater will move when you 

adjust controls. Moving heater 

may cause a gas leak.

 WARNING: If installing in a 

sunken  fireplace,  special  care 

is  needed.  You  must  raise  the 

fireplace  floor  to  allow  access 

to  heater  control  panel.  This 

will  insure  adequate  air  flow 

and guard against sooting and 

controls being damaged. Raise 

fireplace floor with noncombus-

tible material. Make sure material 

is secure.

  CAUTION:  Do  not  pick  up 

heater base assembly by burn-

ers. This could damage heater. 

Only handle base assembly by 

grates.

IMPORTANT:

 Make sure the heater burners are 

level. If heater is not level, heater will not work 

properly. For thermostat models, avoid damage 

to thermostat bulb. Avoid nicks or sharp bends 

in thermostat bulb wire. Keep thermostat bulb 

in mounting bracket until ready to mount base 

to floor. See 

Optional Positioning Of Thermostat 

Sensing Bulb

, page 33.

Installation Items Needed

•  hardware package (provided with heater)

•  approved flexible gas hose and fittings (not 

provided) (if allowed by local codes) 

•  sealant (resistant to propane/LP gas, not pro

-

vided)

•  electric drill with 3/16" masonry drill bit

Note:

  Install  optional  HRC200  Receiver  and 

Hand-Held Remote Control Kit (see 

Accessories,

 

page 42) before installing gas log heater (Remote-

Ready Models Only). See installation instructions 

included with the kit. 

Summary of Contents for R 18" Remote-ready

Page 1: ...urgassupplierfromaneighbor 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 inst...

Page 2: ...agency or the gas supplier WARNING This appliance is for installation only in a solid fuel burning mason ry or UL127 factory built fireplace or in a listed vent less firebox enclosure It is design ce...

Page 3: ...eep this manual for reference It is your guide to safe and proper operation of this heater WARNING Any change to this heater or its controls can be dangerous WARNING Do not use a blower insert heat ex...

Page 4: ...Deple tion Sensing ODS safety shutoff system The ODS shuts down the heater if enough fresh air is not available See Air for Combustion and Ventilation page 6 If heater keeps shutting off see Troubles...

Page 5: ...nt or up a chimney Heat is generated by both realistic flames and glowing coals This heater is designed for vent free operation with flue damper closed It has been tested and approved toANSI Z21 11 2...

Page 6: ...Includes the room in which you will install heater plus any adjoining rooms with doorless pas sageways or ventilation grills between the rooms 1 Determine the volume of the space length x width x hei...

Page 7: ...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 Se...

Page 8: ...n out doors located on floor or wall of fire place If not drafting may cause pilot outage or sooting Use a heat resistant sealant Do not seal chimney flue damper WARNING Never install the heater in a...

Page 9: ...Wall Example NOTICE Manual control heaters maybeusedasaventedproduct Ifso youmustalwaysrunheater with chimney flue damper open If running heater with damper open noncombustible material above fireplac...

Page 10: ...e fireplace opening Noncombustible materials such as slate marble tile etc must be at least 1 2 thick With sheet metal you must have non combustible material behind it Noncombustible material must ext...

Page 11: ...of Mantel Shelf Mantel Shelf Floor Clearances A If installing appliance on the floor level you must maintain the minimum distance of 14 to combustibles see Figure 8 B If combustible materials are les...

Page 12: ...NING If installing in a sunken fireplace special care is needed You must raise the fireplace floor to allow access to heater control panel This will insure adequate air flow and guard against sooting...

Page 13: ...inued Heater Gas Regulator Flexible Gas Hose if allowed by local codes Figure 11 Attaching Flexible Gas Hose to Heater Gas Regulator Variable Manually Controlled and Thermostatically Controlled Models...

Page 14: ...the installer must supply an external regulator The external regulator will reduce incoming gas pressure You must reduce incoming gas pressure to between 11 and 14 inches of water If you do not reduc...

Page 15: ...ptional CSA design certified equipment shutoff valve from your dealer See Accessories page 42 Minimum inlet pressure for purpose of input adjustment Figure 17 Gas Connection Remote Ready Models Only G...

Page 16: ...e for natural gas or propane LP supply to equipment shutoff valve for propane LP see Figure 19 or 20 Apply noncorrosive leak detection fluid to all joints Bubbles form ing show a leak 4 Correct all le...

Page 17: ...Receiver Figure 22 Installing Remote Receiver Front Back Insulating Washers Remote Receiver Mounting Clips Front Back Wires Nut Nut Screw White Wire From Receiver Installation Continued Front Back ins...

Page 18: ...s in the back of the rear log 3 against the rear grate prongs Make sure the log fits securely over the prongs see Fig ure 28 Make sure log is completely vertical and not leaning in toward burner where...

Page 19: ...ce and to replace any part of the control system and any gas control which has been under water lighting instructions WARNING If fireplace has glass doors never operate this heater with glass doors cl...

Page 20: ...rclockwise to desired heating level The burners should light Set control knob to any heat level between HI and LO 9 To leave pilot lit and shut off burners only turn control knob clockwise to the PILO...

Page 21: ...ol system and any gas control which has been under water Operating Heater Continued lighting instructions WARNING If fireplace has glass doors never operate this heater with glass doors closed If you...

Page 22: ...ave pilot lit and shut off burners only turn control knob clockwise to the HI position then press in and turn clockwise to PILOT position Operating Heater Continued Figure 32 Pilot Ignitor Electrode T...

Page 23: ...the control system and any gas control which has been under water Operating Heater Continued lighting instructions WARNING If fireplace has glass doors never operate this heater with glass doors clos...

Page 24: ...goes out repeat steps 4 through 8 page 19 9 Slightly push in and turn control knob coun terclockwise to the ON position 10 Wait one minute and switch selector switch to the ON position to light burner...

Page 25: ...gure 36 Setting the Selector Switch Control Knob and Flame Adjustment Knob for Remote Operation On Off Series Model HRC100 Hold the control button on the hand held remote until burner turns on Hold th...

Page 26: ...pilot flame pattern Figure 39 shows a correct pilot flame pattern Figure 40 shows an incorrect pilot flame pattern The incorrect pilot flame is not touching the thermocouple This will cause the therm...

Page 27: ...r inspected yearly by a qualified service person Heater may need more frequent cleaning due to excessive lint fromcarpeting pethair bedding material etc WARNING Failure to keep the primary air opening...

Page 28: ...a drinking straw if compressed air is not available CLEANING AND MAINTENANCE Continued Figure 43 Injector Holder On Outlet Burner Tube Burner Tube Injector Holder Primary Air Inlet Holes Ports Slots F...

Page 29: ...in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When ignitor button is pressed there is no spark at ODS pilot When igni...

Page 30: ...Contact local natural or pro pane LP gas company 2 Clean burner s see Cleaning and Maintenance page 27 or replace burner orifice s 3 Contact qualified service person 1 Clean burner see Cleaning and M...

Page 31: ...into white powder residue 1 Not enough combustion ven tilation air 1 Battery is not installed Bat tery power is low 1 Metal expanding while heat ing or contracting while cooling REMEDY 1 Check burner...

Page 32: ...ween con trol valve and burner 2 Gas leak See Warning statement at top of page 1 Thermostat sensing bulb needs to be repositioned Thermostat Controlled Models Only 2 Hand held remote control is too cl...

Page 33: ...ew after removing the thermostat sensing bulb IMPORTANT Do not force or bend the thermostat sensing bulb or capillary 3 The thermostat sensing bulb may be located to the lower right front side of fire...

Page 34: ...ve 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 and serial n...

Page 35: ...let Gas Pressure in of water Maximum 14 10 5 14 10 5 14 10 5 Minimum 11 5 11 5 11 5 Shipping Weight 30 lbs 30 lbs 30 lbs For purpose of input adjustment 30 Thermostat 30 Variable 30 Remote Ready Contr...

Page 36: ...18 18 26 6 2 6 1 24 25 22 21 9 10 12 11 13 14 4 25 25 8 6 20 7 19 3 5 1 36 Models 1 18 24 30 Models 2 Illustrated Parts Breakdown Variable Manually Controlled split oak Models nvs18NV nvs18PV nvs24NV...

Page 37: ...n 1 15 098508 01 098508 01 098508 01 098508 01 Valve Retainer Pin 1 16 102568 01 102568 01 102568 01 102568 01 Gas Valve NG 1 102568 02 102568 02 102568 02 102568 02 Gas Valve LP 1 17 101005 01 101005...

Page 38: ...ted parts breakdown Thermostat controlled Models nvs18NT nvs18PT nvs24NT nvs24PT nvs30NT nvs30PT nvs36NT and nvs36PT 3 2 1 36 Models 1 18 24 30 Models 8 9 24 10 23 5 29 9 2 9 1 6 7 26 12 13 15 14 16 4...

Page 39: ...8354 01 098354 01 098354 01 Control Knob 1 16 102013 01 102013 01 102013 01 102013 01 Control Rod 1 17 100000 01 100000 01 100000 01 100000 01 Cotter Pin 1 18 101053 01 101053 01 101053 01 101053 01 A...

Page 40: ...parts breakdown remote ready variable control models nvs18nr nvs18pr nvs24nr nvs24pr nvs30nr nvs30pr nvs36nr and nvs36pr 22 12 13 20 19 14 21 17 18 16 23 4 15 27 25 5 28 29 26 5 7 8 10 9 1 9 2 7 9 5 6...

Page 41: ...103782 01 103782 01 Valve Bracket 1 16 M12461 26 M12461 26 M12461 26 M12461 26 Screw 5 17 103781 01 103781 01 103781 01 103781 01 Gas Control NG 1 103781 02 103781 02 103781 02 103781 02 Gas Control L...

Page 42: ...HRC200 For all Remote Ready Models Allows the fire place to be operated in a manually or thermostati cally controlled mode You can turn the fireplace on and off without ever leaving the comfort of yo...

Page 43: ...NON circulating Not Shown For all models damper CLAMP GA6080 Not Shown For Remote Ready and Variable Manually Controlled Models Permanently opens chimney flue damper for vented operation lava rock GA6...

Page 44: ...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 condit...

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