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UNVENTED (VENT-FREE)
GAS LOG HEATER

OWNER’S OPERATION AND
INSTALLATION MANUAL

Save this manual for future reference.

Save this manual for future reference.

WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal injury, or loss of life.

— Do not store or use gasoline or other

flammable vapors and liquids in the vicinity
of this or any other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.
• Do not touch any electrical switch; do not

use any phone in your building.

• Immediately call your gas supplier from a

neighbor’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 qualified installer, service agency, or
the gas supplier.

WARNING: Improper installation, adjust-
ment, alteration, service, or maintenance
can cause injury or property damage. Re-
fer to this manual for correct installation
and operational procedures. For assis-
tance or additional information consult a
qualified installer, service agency, or the
gas supplier.

WARNING: This appliance is for installa-
tion only in a solid-fuel burning masonry
or UL127 factory-built fireplace, or in an
approved ventless firebox. It is design-
certified for these installations in accor-
dance with ANSI Z21.11.2. Exception: Do
not install this appliance in a factory-built
fireplace that includes instructions stat-
ing it has not been tested or should not be
used with unvented gas logs.

WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which
it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer
to 

Air for Combustion and Ventilation section on page 4 of this manual.

For more information, visit www.desatech.com

For more information, visit www.desatech.com

This appliance may be installed in an 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 convertible for use with other gases.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer

18", 24" and 30" Variable

Manually-Controlled Models

FLAME-MAX

®

 Vintage

Oak Log Design

FLAME-MAX

®

 Golden

Oak Log Design

18", 24" and 36" Variable Manually-Controlled Models

18" and 24" Thermostat-Controlled Models

18", 24" and 36" Remote-Ready Models

Remote-Ready and Variable Manually-Controlled Models Also Design-Certified As Vented

Decorative Appliances

LO

HI

OFF

Pilo

t

TM

Summary of Contents for FLAME-MAX FLAME-MAX Golden

Page 1: ...asonry or UL127 factory built fireplace or in an approved ventless firebox It is design certified for these installations in accor dance with ANSI Z21 11 2 Exception Do not install this appliance in a...

Page 2: ...ck and carbon monoxide poisoning WARNING Anychangetothisheateroritscontrols can be dangerous WARNING Do not use a blower insert heat exchanger insert or other accessory not approved for use with this...

Page 3: ...ow the instructions in Clean ing and Maintenance page 24 8 Before using furniture polish wax carpet cleaner or similar products turn heater off If heated the vapors from these prod ucts may create a w...

Page 4: ...you bought heater UNPACKING CAUTION Do not remove the data plates from the grate assembly The data plates contain important warranty and safety information OPTIONAL REMOTE CONTROL ACCESSORIES There a...

Page 5: ...as 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 bet...

Page 6: ...ir from the outdoors and vents to the outdoors Example Gas water heater _____________ Btu Hr Vent free heater _____________ Btu Hr Total _____________ Btu Hr 4 Compare the maximum Btu Hr the space can...

Page 7: ...ntilation grills or ducts You must provide two permanent openings one within 12 of the ceiling and one within 12 of the floor Connect these items directly to the outdoors or spaces open to the outdoor...

Page 8: ...ater in a bedroom or bathroom unless installed as a vented appliance see page 11 Remote Ready and Variable Manually Controlled Models Only in a recreational vehicle where curtains furniture clothing o...

Page 9: ...erial Clearances If Not Using Mantel Note If using a mantel proceed to If Using Mantel If not using a mantel follow the information on this page You must have noncombustible material s above the firep...

Page 10: ...in Figure 6 are not met you must have a hood When using a hood there are still certain minimum mantel clearances required Follow minimum clearances shown in Figure 7 when using hood NOTICE Surface tem...

Page 11: ...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 fire place floor with noncombustible material...

Page 12: ...ut moving heater base 7 Mark screw locations through one hole on each side of the mounting bracket see Figures 13 14 or 15 depending on your model If installing in a brick bottom fireplace mark screw...

Page 13: ...pe Internally tinnedcoppertubingmaybeusedincertain areas Check your local codes Use pipe of 1 2 diam eter or greater to allow proper gas volume to heater If pipe is too small undue loss of volume will...

Page 14: ...propane LPsupplyandheater See guidelines under Connecting to Gas Supply page 13 Pressure Testing gas Supply Piping system Test Pressures In Excess Of 1 2 PSIG 3 5 kPa 1 Disconnect appliance with its a...

Page 15: ...e grate and over front posts on chassis see Figure 22 page 15 2 Place rear log on rear of chassis see Figure 22 page 15 Slide log forward so that it sits against rear posts on chassis MPORTANT Make su...

Page 16: ...View Figure 24 Installing Golden Oak One Piece Log Set Log 2 Chassis Rear Post Middle Section at Bottom of Log Set Five Piece Log Set Chassis Burner U shaped Cutout in Chassis Log Set Burner Ports Gol...

Page 17: ...chassis see Figure 28 Log will hug the burner see Figure 29 4 Place right top log 4 over logs 1 2 and 3 as shown in Figure 29 Top log will sit down into indentions in these logs 5 Place left top log...

Page 18: ...efer to operate their heater with the chimney damper closed This will put all the heat into the room However there may be times you will desire the full flames of the HI heat setting but will find the...

Page 19: ...ou must open the vents before operating heater Youmustoperatethisheaterwithafireplacescreen in place Make sure fireplace screen is closed before running heater NOTICE During initial operation of new h...

Page 20: ...s Selecting higher settings produces greater heat output This results in increased heating comfort WARNING Do not operate heater between PILOT and HI positions CAUTION Do not try to adjust heating lev...

Page 21: ...ly to release some of the heat WARNING Damper handle will be hot if heater has been running Figure 34 Control Knob and Ignitor Button Location Shown as Supplied No Control Options OPERATING HEATER Con...

Page 22: ...sehold depending upon the amount of space to be heated the output of the central heating system etc For wall thermostat operation follow instruction supplied with thermostat accessory GWMT1 For wall s...

Page 23: ...ton un til OFF lights The pilot will remain lit IMPORTANT To turn the pilot off manually turn the con trol knob on the heater to the OFF position Figure 38 Thermostat Hand Held Remote Control Unit Sel...

Page 24: ...ures 41 and 42 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 ha...

Page 25: ...t 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 Tighten nut holding pie...

Page 26: ...warm up for a minute 2 Operate burners until air is removed from line Have gas line checked by local natu ral or propane LP gas company 3 Observe minimum installation clearances see pages 8 through 1...

Page 27: ...h air is available 2 Low 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 Ga...

Page 28: ...metal fireplace see Figure 47 for location If your fire place has glass doors position sensing bulb directly behind door gap on right bottom side see Figure 48 4 The mounting clip must be a minimum of...

Page 29: ...lly Controlled Thermostat Controlled Thermostat Controlled Btu Variable 20 000 39 000 20 000 33 000 21 500 36 000 Type Gas Propane LP Only Natural Propane LP Only Natural Propane LP Only Natural Ignit...

Page 30: ...nly original replacement parts This will protect your warranty coverage for parts replaced under warranty PARTS UNDER WARRANTY Contact authorized dealers of this product If they can t supply original...

Page 31: ...ostat and the log heater will automatically cycle from pilot to the heat setting selected WALL MOUNT ON OFF SWITCH GWMS2 Not Shown For all Remote Ready Models Allows the gas log heater to be turned on...

Page 32: ...ED FLAME MAX VINTAGE OAK LOG MODELS VYS18PA H18P VYS18NA H18N VYS24PA H24P VYS24NA AND H24N ILLUSTRATED PARTS BREAKDOWN Variable Manually Controlled Flame Max Vintage Oak Log Models VYS18PA H18P VYS18...

Page 33: ...01 102966 01 Upper Bracket 1 8 098867 10 098867 14 098867 10 098867 14 Gas Regulator 1 9 102780 03 102780 01 102780 03 102780 01 Outlet Burner Tube 1 10 102798 01 102798 01 102798 01 102798 01 Inlet...

Page 34: ...2 1 1 1 2 1 3 Note The Golden Oak Log 107027 01 for the VYD36PA model differs slightly from drawing 20 ODS Pilot Propane LP ILLUSTRATED PARTS BREAKDOWN VARIABLE MANUALLY CONTROLLED FLAME MAX GOLDEN O...

Page 35: ...102843 01 Burner Clip 1 13 102980 01 102772 01 102772 01 102772 01 Burner 1 14 102568 08 102568 06 102568 06 102568 06 Control Valve 1 15 098508 01 098508 01 098508 01 098508 01 Valve Retainer Nut 1 1...

Page 36: ...OAK LOG MODELS VYD18NA VYD24NA VYD30NA and VYD36NA ILLUSTRATED PARTS BREAKDOWN Variable Manually Controlled Flame Max Golden Oak Log Models VYD18NA VYD24NA VYD30NA and VYD36NA 5 21 11 12 13 1 5 1 4 2...

Page 37: ...7 102966 02 102966 01 102966 01 102966 01 Upper Bracket 1 8 098867 14 098867 14 098867 14 098867 14 Gas Regulator 1 9 102798 01 102798 01 102798 01 102798 01 Inlet Tube 1 10 102779 03 102779 01 10277...

Page 38: ...STAT CONTROLLED FLAME MAX GOLDEN OAK LOG MODELS VYD18PTA VYD18NTA VYD24PTA VYD24NTA VYD30PTA and VYD30NTA ILLUSTRATED PARTS BREAKDOWN Thermostat Controlled Flame Max Golden Oak Log Models VYD18PTA VYD...

Page 39: ...3 03 102983 02 102983 02 102983 01 102983 02 102983 01 Outlet Burner Tube 1 10 099056 19 099056 26 099056 17 099056 16 099056 17 099056 16 Burner Orifice Injector 1 11 102843 01 102843 01 102843 01 10...

Page 40: ...A HD30PR VYD36PRA and HD36PR ILLUSTRATED PARTS BREAKDOWN Remote Ready Flame Max Golden Oak Log Models VYD18PRA HD18PR VYD24PRA HD24PR VYD30PRA HD30PR VYD36PRA and HD36PR 5 14 14 15 23 14 9 19 8 7 10 2...

Page 41: ...9056 17 099056 17 Burner Orifice Injector 1 9 102966 01 102966 01 102966 01 Upper Bracket 1 10 102980 01 102772 01 102772 01 102772 01 Burner 1 11 099387 13 099387 09 099387 09 099387 09 Pilot Tube 1...

Page 42: ...VYD36PNA and HD36NR ILLUSTRATED PARTS BREAKDOWN Remote Ready Flame Max Golden Oak Log Models VYD18NRA HD18NR VYD24PNA HD24NR VYD30NRA HD30NR VYD36PNA and HD36NR 5 14 14 15 22 14 9 19 8 7 10 2 1 5 1 4...

Page 43: ...per Bracket 1 10 102980 01 102772 01 102772 01 102772 01 Burner 1 11 099387 15 099387 12 099387 12 099387 12 Pilot Tube Valve to regulator 1 12 103781 01 103781 01 103781 01 103781 01 Gas Control Valv...

Page 44: ...______________________________________________________ _______________________________________________________________________________________________ _________________________________________________...

Page 45: ...Completed 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 0...

Page 46: ...110399 01A For more information visit www desatech com For more information visit www desatech com 46 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 Postage Required TM TAPE TAPE...

Page 47: ...________________________________________________________ _______________________________________________________________________________________________ _______________________________________________...

Page 48: ...ry replacement parts voids this warranty 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...

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