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111826-02C

For more information, visit www.desatech.com

8

Figure 7 - Attaching Flexible Gas Hose to  Gas Regulator 

Gas Control 

Flexible Gas 
Hose (if allowed 
by local codes) 

  WARNING: This appliance requires a 3/8" NPT 

(National Pipe Thread) inlet connection to the pres-
 sure regulator.

  WARNING: A qualifi ed ser vice per son must con nect 

appliance to gas sup ply. Follow all local codes.

  CAUTION: Never connect propane/LP fi replace   

directly to the propane/LP supply. This unit re quires 
an external regulator (not supplied). Install the external 
regu la tor be tween the unit and propane/LP supply.

  WARNING: Never connect natural gas fi replace to 

pri vate (non-utility) gas wells. This gas is com mon ly 
known as wellhead gas.

Installation Items Needed

Before installing appliance, make sure you have the items listed 
below.

•    external regulator (supplied by installer)
•    piping (check local codes)
•    sealant (resistant to propane/LP gas)
•    equipment shutoff valve *
•    test gauge connection *
•    sediment trap
•    tee joint
•    pipe wrench
•    approved fl exible gas line with gas con nec tor (if allowed by lo cal 

codes) (provided) 

* A CSA design-certifi ed equipment shutoff valve with 1/8" NPT 
tap is an ac cept able alternative to test gauge con nec tion. Pur chase 
the optional CSA design-certifi ed equipment shutoff valve from 
your dealer. See Accessories, page 22.

For propane/LP units, the installer must supply an external reg u -
la tor. The external reg u la tor will reduce incoming gas pressure. You 
must reduce in com ing gas pressure to between 11 and 14 inches of 
water. If you do not reduce in com ing gas pressure, regulator dam-
age could occur. Install external reg u la tor with the vent point ing 
down as shown in Figure 8 page 9. Pointing the vent down protects 
it from freezing rain or sleet.

  CAUTION: Use only new, black iron or steel pipe. 

In ter nal ly-tinned copper tubing may be used in cer-
 tain areas. Check your local codes. Use pipe of 1/2" 
di am e ter or greater to allow prop er gas vol ume to 
appliance. If pipe is too small, undue loss of volume 
will occur.

CONNECTING TO GAS SUPPLY

INSTALLATION

Continued 

INSTALLATION
Installing Appliance Assembly
Connecting To Gas Supply

  WARNING: If installing in a sunken fi re place, spe-

cial care is needed. You must raise the fi re place fl oor 
to allow access to appliance control panel. This will 
in sure ad e quate air fl ow and guard against soot ing. 
Raise fi replace  fl oor with noncom bus ti ble ma te ri al. 
Make sure material is secure.

  CAUTION: Do not pick up appliance as sem bly by 

logs. This could damage unit. Only handle  assembly 
by grates.

IMPORTANT:

 Make sure the appliance is  level. If unit is not level, 

unit will not work properly.

Installation Items Needed

•    control cover kit (provided with appliance)

•    approved fl exible gas hose and fi ttings (pro vid ed with appliance)  

(if al lowed by lo cal codes) 

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

Note:

 Install optional Hand-Held Remote Control Kit (see Ac ces -

so ries, page 22) before in stall ing gas log appliance (Remote-Ready 
Models Only). See installation in struc tions  in clud ed  with  the  kit.

 

1.    Apply pipe joint sealant lightly to male threads of gas fi tting 

(not provided). Connect ap proved fl exible gas hose to inlet side 
of gas con trol (see Figure 7).

2.    Position appliance in fi re place. 

3.    Connect to gas supply. See Con nect ing  To  Gas  Supply.

INSTALLING APPLIANCE ASSEMBLY

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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