HEARTH PRODUCTS
KITS AND ACCESSORIES
775,239M
Rev. a, 08/2008
DESIGNER™ GaS CONvERSION INSTRuCTIONS LP TO NG
CaT. NO. H5428, MODEL DBv-CK-LP TO NG
INSTaLLaTION INSTRuCTIONS FOR CONvERTING FROM PROPaNE GaS (LP) TO
NaTuRaL GaS (NG). FOR uSE wITH THE DESIGNER™ DIRECT vENT GaS FIREPLaCE INSERTS
KIT CONTENTS (See Figure 1):
avERTISSEMENT
1 ea. Robertshaw NG Regulator Kit (A)
1 ea. #37 NG main burner orifice (30,000 BTU’s) (B)
1 ea. Nova SIT NG pilot orifice (C)
1 ea. Instruction Sheet
Cet équipement de conversion sera installé par une
agencequalifiéedeserviceconformémentauxinstruc-
tionsdufabricantettoutesexigencesetcodesapplica-
blesdel'autorisésavoirlajuridiction. Sil'information
danscetteinstructionn'estpassuivieexactement,un
feu,explosionouproductiondeprotoxydedecarbone
peutrésulterledommagescauserdepropriété,perte
oublessurepersonnelledevie. L'agencequalifiéede
service est esponsable de l'installation propre de cet
équipment. L'installationn'estpaspropreetcompléte
jusqu'à l'opération de l'appareil converti est chéque
suivant les critères établis dans les instructions de
propriétaire provisionnées avec l'équipement.
TOOLS NEEDED (See Figure 2):
5/32” Allen Wrench Or T-Handle Wrench
#2 Phillips Screwdriver
1/2” Open End Wrench
Figure 1 - Kit Contents
B
A
IMPORTaNT CaNaDa
Theconversionshallbecarriedoutinaccordancewith
therequirementsoftheprovincialauthoritieshaving
jurisdictionandinaccordancewiththerequirements
of the CaN/CSa B149.1 Installation code.
C
IMPORTaNT LE CaNaDa SEuLEMENT
Figure 2 - Tools Needed
La conversion devra être effectuée conformément
aux recommandations des autorités provinciales
ayant juridiction et conformément aux exigences
du code d'installation CaN/CSa B149.1 .
waRNING
This conversion kit shall be installed by a qualified
serviceagencyinaccordancewiththemanufacturer's
instructionsandallapplicablecodesandrequirements
oftheauthorityhavingjurisdiction. Iftheinformation
in these instructions is not followed exactly, a fire,
explosionorproductionofcarbonmonoxidemayresult
causing property damage, personal injury or loss of
life. The qualified service agency performing this
installationisresponsiblefortheproperinstallationof
thiskitandassumesresponsibilityforthisconversion.
The installation is not proper and complete until the
operation of the converted appliance is checked as
specified in the manufacturers instructions supplied
with the kit.
IMPORTaNT
The burner orifices provided in this kit are only for
use at elevations of 0 to 2,000 feet (610 M) in the
uSa and 0 to 4,500 feet (0-1372 M) in Canada. at
higher elevations the BTu input must be de-rated
by 4% for every 1,000 feet (305 M) to maintain
the proper ratio of gas to air. If the installer must
convert the unit to adjust for varying altitudes, a
derationinformationstickermustbefilledoutbythe
installer and adhered to the appliance at the time
of the conversion. Contact your local gas supplier
for deration requirements for your area.
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Step 6.To remove burner, unscrew the 5/32” allen head screw, securing
the right end of the burner. See Figure 8.
Step 9. Firmly pull the pilot hood straight up and off to access the hexed
pilot orifice (see Figures 11 and 13). Use a 5/32” allen head
wrench to unscrew the pilot orifice and lift it out (see Figures
12 and 13). Replace with the new NG pilot orifice provided. Re-
install the pilot hood. Note: The raised part of the pilot bottom
lines up with the notch in the pilot hood (see Figure 13).
Step 7.Next, push the air shutter control lever in until it stops. See
Figure 9.
Step 8.Slide burner to the right until it comes off the burner orifice. Lift
the right end of burner until it releases from the copper rod. See
Figure 10.
Remove 5/32”
allen head screw,
Pilot Hood
Figure 11 - Pull Off Pilot Hood
Figure 8 - Remove Screw From Burner
use 5/32” allen wrench
to remove pilot orifice
Push air shutter lever
in until it stops.
Figure 12 - Remove Pilot Orifice
SIT Millivolt Pilot
assembly Shown
Figure 9 - Push In Shutter Lever
Pilot
Hood
Pilot
Burner Tube assembly
Orifice
Burner Orifice
This raised part of
the pilot bottom
must line up with
the notch in the
pilot hood.
Figure 13
Figure 10 - Remove Burner
NOTE: DIAGRAMS AND ILLUSTRATIONS ARE NOT TO SCALE.
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Step10.Using1/2”openendwrench,removetheLPburnerorifice. Install
the new NG orifice. Make sure to use pipe sealing compound on
threads of the new orifice (see Figure 14).
Inlet Gas Supply Pressure
Fuel #
Minimum
Maximum
Desired
Nat.
Gas
5" wC/po. C.E
(1.24 kPa)
10.5" wC/po. C.E
7" wC/po. C.E
(1.74 kPa)
(2.61 kPa)
Manifold Gas Supply Pressure
Fuel #
Low
High
1/2” End wrench
Natural
Gas
(Lo) 1.7" wC/po. C.E
(Hi) 3.5" wC/po. C.E
(0.42 kPa)
(0.87 kPa)
Step 14.Reinstall the burner, log set support, log set and glass door
assembly. See Pages 9 and 10 (Log Set Installation) and Page
19(DoorAssemblyInstallation)intheInstallationandOperation
Manual.
Burner Orifice
Step 15.Lighttheapplianceperthelightinginstructionslabelonappliance
(located below glass door) or lighting instructions on Page 14
intheInstallationandOperationManual. Inspectforproperpilot
and burner flame appearances. See Flame Color and Behavior
on Page 15 and Inspect The Pilot System For Proper Flame on
Page 16 in the Installation and Operation Manual. Also see
Figures 16 and 17 on this page.
Figure 14 - Replace Burner Orifice
Step 11.Install burner, and make sure air shutter is 1/8” open (see in-
structionsonPage13oftheInstallationandOperationManual).
Afterstep15, withtheappliancelitandfullywarmedup, evaluate
the burner flame appearance and re-adjust air shutter for proper
flame appearance, if necessary.
Figure 16 - Proper Pilot Flame Appearance
air Shutter Lever
Soot at
Flame Tip
Soot above
Flame Tip
No Soot at
Flame Tip
Figure 15 - Adjust Air Shutter
Dark Orange
Semi-Transparent
Flame
Ports on Pan
Burner assembly
Yellow Flame
Step 12. Turn on gas supply and test for gas leaks using a gas leak test
solution (see Test Procedure on Page 12 of the Installation and
Operation Manual).
No Blue Flame
Center
Blue Flame
Center
PROPERLY
BuRNING FLaME
IMPROPERLY
BuRNING FLaME
Step 13.Using a manometer, test the inlet and manifold gas pressure
per instructions in the Installation and Operation Manual (Page
12) and as shown in the following 2 tables.
Figure 17 - Burner Flame Appearance
NOTE: DIAGRAMS AND ILLUSTRATIONS ARE NOT TO SCALE.
Lennox Hearth Products reserves the right to make changes at any time, without notice, in
design, materials, specifications, prices and also to discontinue colors, styles and products.
Consult your local distributor for fireplace code information.
Printed in u.S.a. © 2008 Lennox Hearth Products
1110 west Taft avenue • Orange, Ca 92865
P/N 775,239M REv. a 08/2008
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