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111826-02C

For more information, visit www.desatech.com

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  WARNING: Before installing in a solid fuel burn-

 ing fi replace, the chimney fl ue and fi rebox must be 
cleaned of soot, creosote, ash es and loose paint by 
a qual i fi ed  chim ney cleaner. Creosote will ignite if 
highly heated. A dirty chimney fl ue may create and 
dis trib ute soot within the house. In spect chim ney fl ue 
for damage. If damaged, repair fl ue damper  before 
operating appliance.

INSTALLATION AND CLEARANCES 

LOG SIZING REQUIREMENTS         Min. 

                Minimum Firebox Size          Flue size

Log                               Front    Rear*
Size  Height  Depth  Width  Width

18"        17"        14"        24"       20" 

    8"

24"        17"        14"        28"       22" 

    8" 

 

               

*Measured at 14" depth

Damper Clamp

Damper
Clamp

Damper

Manufactured 
Fireplace

Masonry Fireplace

Figure 6 - Attaching Damper Clamp

Damp er

Damper

INSTALLATION

Flue Opening Specifi cations

Installation and Clearances

Venting Specifi cations for Installation

Installing Damper Clamp

INSTALLATION

  WARNING: Before installing in a solid fuel burn-

 ing fi replace, the chimney fl ue and fi rebox must be 
cleaned of soot, creosote, ash es and loose paint by 
a qual i fi ed  chim ney cleaner. Creosote will ignite if 
highly heated. A dirty chimney fl ue may create and 
dis trib ute soot within the house. In spect chim ney 
fl ue for damage.

NOTICE:  Installation, service, and repair of this ap-
 pli ance must be performed by a qualifi ed  in stall er, 
ser vice agency, com pa ny or gas supplier ex pe ri enced 
with this type of gas ap pli ance. Only fac to ry au tho rized 
components list ed in these in struc tions may be used 
in ac cor dance with the man u fac tur er’s in struc tions 
and all codes and requirements of the authority hav-
ing ju ris dic tion. Any modifi cations to this kit, or use 
of unauthorized com po nents or ac ces so ry items will 
void the man u fac tur er’s war ran ty, and may result in 
a haz ard ous condition.

FLUE OPENING SPECIFICATIONS

Note:

 This vented appliance must be in stalled only in a solid-fuel 

burning fi replace with a working fl ue and constructed of non com -
bus ti ble  material.

The charts in Figure 4 indicate technical in for ma tion  regarding  the 
installation of your gas log set. Please make sure that all of the spec-
 i fi  ca tions shown are applicable be fore  in stal la tion  is  at tempt ed.

The fi replace must include a working fl ue and venting system with 
the minimum open ings shown in the Figure 5.

CHECK GAS TYPE

Use the correct gas type (natural or propane/LP) for your unit. If 
your gas supply is not correct, do not instal in fi replace. Call dealer 
where you bought the appliance for proper type of appliance.

VENTING SPECIFICATIONS FOR 
INSTALLATION

The fi replace chimney fl ue and vent must be draft ing properly. To 
check the vent for proper drafting: Light a tightly rolled news pa per 
on one end and place it at the inside front edge of the fi replace. Ob-
serve the smoke and be sure the vent is properly drawing it up the 
chimney. If the smoke spills out into the room, extinguish the fl ame 
and remove any obstruction until proper venting is achieved.

The chimney fl ue damper must be fi xed open to provide a min i mum 
of 81 sq. in. of free air opening during operation of this log set. A mul-
tipurpose damper clamp is provided to fi x the damper in position.

The minimum fl ue sizes shown in Figure 5 are based on a 6' chimney 
height using round pipe. Your minimum fl ue size will vary based 
on input rate and chimney height. Refer to the National Fuel Gas 
Code ANSI Z223.1/NFPA 54, Section 6.6
, for details.

INSTALLING DAMPER CLAMP

Secure the damper stop clamp provided to the leading edge of the 
damper as shown in Figure 6. If for any reason this clamp doesn't 
work on your fi replace, an oth er suitable clamp or permanent stop 
must be installed, or the damper blade must be cut or removed.

  WARNING: Make sure the selector switch is in the 

OFF po si tion before installing appliance .

Figure 4 - Technical Information Charts

SPECIFICATIONS (W.C.)

         FUEL INLET            MANIFOLD
          PRESSURE             PRESSURE

               Min.        Max.               

   NG         7          10.5             3.5

   LP         11           14                10

Figure 5 - Sizes & Clearances

Summary of Contents for Design Dynamics VTD-18N-BTB

Page 1: ...appliance may be installed in an aftermarket 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 applian...

Page 2: ...18 ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST 20 ACCESSORIES 22 OWNER S REGISTRATION FORM 23 WARRANTY INFORMATION Back Cover your building immediately call your gas supplier from a neighbor s phone Fo...

Page 3: ...urface to avoid burns or clothing ignition Log set will remain hot for a time after shutdown Allow surface to cool before touching 14 Carefully supervise young children when they are in the room with...

Page 4: ...nformation on pages 4 through 6 will help you classify your space and provide adequate ventilation Unusually Tight Construction The air that leaks around doors and windows may provide enough freshairf...

Page 5: ...8 m3 per kw of the aggregate input rating of all appli ances installed in that space Rooms communicating directly with the space in which the appliances are installed through openings not furnished wi...

Page 6: ...Into Adjoining Room Option 2 Ventilation Grills Into Adjoining Room Option 1 12 12 AIR FOR COMBUSTION AND VENTILATION Ventilation Air Cont the outdoors or spaces open to the outdoors These spaces inc...

Page 7: ...y in a solid fuel burning fireplace with a working flue and constructed of noncom bustible material The charts in Figure 4 indicate technical information regarding the installation of your gas log set...

Page 8: ...ure regulator dam age could occur Install external regulator with the vent pointing down as shown in Figure 8 page 9 Pointing the vent down protects it from freezing rain or sleet CAUTION Use only new...

Page 9: ...leak detection fluid to all joints Bubbles forming show a leak Correct all leaks at once CAUTION Make sure external regulator has been installed between propane LP supply and appliance Seeguidelinesun...

Page 10: ...joints from gas meter to equipment shutoff valve for natural gas or propane LP supply to equipment shutoff valve for propane LP see Figure 11 Apply noncorrosive leak detection fluid to all joints Bubb...

Page 11: ...d turn control knob counterclockwise to the PILOT position Press in control knob for five 5 seconds see Figure 13 Note You may be running this appliance for the first time after hooking up to gas supp...

Page 12: ...NG PROCEDURE 1 Follow steps 1 through 6 under Lighting Instructions 2 Depress control knob and light pilot with match 3 Keep control knob pressed in for 30 seconds after lighting pilot After 30 second...

Page 13: ...orrect Pilot Flame Pattern Your pilot may vary from pilots shown Pilot Burner Thermocouple Pilot Burner Thermocouple Figure 17 Incorrect Pilot Flame Pattern Your pilot may vary from pilots shown Therm...

Page 14: ...gnitor cable 2 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 3 Tighten nut holding piezo ignitor to base panel of log set Nut is located behind base panel 4 Replace ignit...

Page 15: ...Problem will stop after a few hours of operation 1 Turn control knob to LO position and let warm up for a minute 2 Operate burners until air is removed from line Have gas line checked by lo cal natura...

Page 16: ...DS pilot is partially clogged 1 Gas leak See Warning statement at top of page 2 Control valve or gas control defective 1 Foreign matter between control valve and burner 2 Gas leak See Warning statemen...

Page 17: ...of water Maximum 10 5 W C 10 5 W C Minimum 5 0 W C 5 0 W C Shipping Weight 32 lbs 34 lbs For purpose of input adjustment VTD 18P PDG VTD 18P BTB VTD 24P PDG VTD 24P BTB Btu Variable 37 000 54 000 41 0...

Page 18: ...arranty coverage for parts replaced under warranty PARTS UNDER WARRANTY Contact authorized dealers of this product If they can t supply original replacement part s call DESA International s Technical...

Page 19: ...111826 02C For more information visit www desatech com 19 19 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 20: ...EAKDOWN VTD 24N PDG VTD 24P PDG VTD 24N BTB VTD 24P BTB VTD 18N PDG VTD 18P PDG VTD 18N BTB VTD 18P BTB 3 Log sets and mounting plates are ordered as an assembly REMOTE MODELS ONLY GTA Replacement Par...

Page 21: ...6 01 111796 02 111816 01 111793 01 see table page 20 112359 01 111800 01 111372 01 112370 01 111371 02 111807 02 111796 01 097159 04 103784 01 103784 02 099998 01 111817 02 111828 01 103778 01 111816...

Page 22: ...HUTOFF VALVE GA5010 For all models Equipment shutoff valve with 1 8 NPT tap Fits 1 2 NPT pipe FIREPLACE HOOD Black GA6050 Brass GA6052 Antique Brass GA6053 For all models Helps deflect heat away from...

Page 23: ...ge 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...

Page 24: ...111826 02C For more information visit www desatech com 24 2701 S Harbor Blvd Santa Ana CA 92704 www desatech com Postage Required TM...

Page 25: ..._________________________________ ________________________________________________________________________________________________ _____________________________________________________________________...

Page 26: ...cement parts voids this warranty The appliance 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 pa...

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