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8

901049

VENTED NATURAL GAS LOGS

INSTALLING DAMPER
CLAMP

Secure the damper stop clamp provided to
the leading edge of the damper as shown in
Figure 5. If for any reason this clamp doesn't
work on your fireplace, another suitable
clamp or permanent stop must be installed,
or the damper blade must be cut or removed.

Damper Clamp

Damper
Clamp

Damper

Manufactured
Fireplace

Masonry Fireplace

Figure 5 - Attaching Damper Clamp

INSTALLATION

Continued

Damper

Damper

 WARNING: Test all gas pip-

ing and connections for leaks
after installing or servicing. Cor-
rect all leaks at once.

 WARNING: Never use an

open flame to check for a leak.
Apply a mixture of liquid soap
and water to all joints. Bubbles
forming show a leak. Correct all
leaks at once.

CHECKING GAS
CONNECTIONS

Pressure Testing Gas Supply
Piping System

Test Pressures In Excess Of 1/2 PSIG

1.

Disconnect log set and its individual
manual shutoff valve from gas supply
piping system.

2.

Cap off open end of gas pipe where
manual shutoff valve was connected.

3.

Pressurize supply piping system by either
using compressed air or opening main gas
valve located on or near gas meter.

4.

Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles form-
ing show a leak.

5.

Correct all leaks at once.

6.

Reconnect log set and manual shutoff
valve to gas supply. Check reconnected
fittings for leaks.

CONNECTING TO GAS
SUPPLY

 WARNING: A qualified ser-

vice person must connect log set
to gas supply. Follow all local
codes.

Installation Items Needed

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

• piping (check local codes)

• sealant (resistant to LP gas)

• manual shutoff valve

• test gauge connection

• adjustable (crescent) wrench or pliers

• sediment trap

• tee joint

• pipe wrench

 CAUTION: Use only new,

black iron or steel pipe. Inter-
nally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of 1/2"
diameter or greater to allow
proper gas volume to log set. If
pipe is too small, undue loss of
pressure will occur.

Install sediment trap in supply line as shown
in Figure 6. Locate sediment trap where it is
within reach for cleaning. Locate sediment
trap where trapped matter is not likely to
freeze. A sediment trap traps moisture and
contaminants. This keeps them from going
into log set controls. If sediment trap is not
installed or is installed wrong, log set may
not run properly.

Installation must include a manual shutoff
valve, union, and plugged 1/8" NPT tap.
Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from
log set (see Figure 6).

Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in a clogged burner injector.

 CAUTION: Use pipe joint seal-

ant that is resistant to liquid pe-
troleum (LP) gas.

Figure 6 - Gas Connection

* Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See
Accessories, page 17.
** Minimum inlet pressure for purpose of input adjustment.

3" Minimum

Sediment Trap

From Gas Meter (5" W.C.**
to 10.5" W.C. Pressure)

A.G.A. Design-Certified
Manual Shutoff Valve
With 1/8" NPT Tap*

Approved Flexible Gas Hose
(if allowed by local codes)

Tee Joint

Pipe Nipple

Cap

Summary of Contents for Comfort Glow CVTR18

Page 1: ...rect installation and operational procedures For assistance or additional information consult a qualified installer service agency or the gas supplier WARNING This appliance is for installation only i...

Page 2: ...d fire box must be cleaned of soot creosote ashes and loose paint by a qualified chimney cleaner Creosote will ignite if highly heated Inspect chimney flue for damage 5 You must operate this log set w...

Page 3: ...that can be purchased sepa rately for this log set You must use the millivolt valve safety pilot kit to use remote accessories with this appliance See Acces sories page 17 UNPACKING CAUTION Do not rem...

Page 4: ...heatlossinhomes Homeowners weather strip and caulk around windows and doorstokeepthecoldairoutandthewarmair in During heating months home owners want their homes as airtight as possible While it is go...

Page 5: ...combustion air from the outdoors and vents to the outdoors 4 Compare the maximum Btu Hr the space can support with the actual amount of Btu Hr used _____________ Btu Hr maximum the space can support...

Page 6: ...he two spaces see options 1 and 2 Figure 2 You can also remove door into adjoining room see op tion 3 Figure 2 Follow the National Fuel Gas Code NFPA 54 ANS Z223 1 Section 5 3 Air for Combustion and V...

Page 7: ...must be in stalled only in a solid fuel burning fireplace with a working flue and constructed of non combustible material The charts in Figure 4 indicate technical information regarding the installati...

Page 8: ...s Needed Before installing log set make sure you have the items listed below piping check local codes sealant resistant to LP gas manual shutoff valve test gauge connection adjustable crescent wrench...

Page 9: ...16 wrench 6 Slip the air restrictor over the 1 8 pipe nipple Apply thread sealant to the male threads and install the rear burner nozzle onto the fitting Tighten with a 9 16 wrench 7 Place the grate...

Page 10: ...alve Manifold Block Figure 11 Installing Gas Control Valve Control Rod INSTALLATION Continued rod to the front 9 Install valve cover to burner pan using screws provided 10 Install thermocouple pilot a...

Page 11: ...e immedi ately Tighten or reassemble the loose connection s using pipe joint com pound until burner system is leak free 4 When the burner is tested and leak free observe the individual tongues of flam...

Page 12: ...f you then smell gas STOP Fol low the safety information above If you don t smell gas go on to the next step 4 Light a match and lay it on top of the U shaped burner near the edge of the cover on the...

Page 13: ...essed in for five 5 seconds Note You may be running this log set for the first time after hooking up to gas supply If so the control knob may need to be pressed in for 30 sec onds This will allow air...

Page 14: ...king sooting excessively Note It is natural and unavoidable for vented gas log sets to produce moderate levels of carbon soot where flames contact the logs This is especially true with propane LP gas...

Page 15: ...ce page 17 or replace pilot assembly 5 Hand tighten until snug then tighten 1 4 turn more 6 Replace thermocouple 7 Replace control valve 1 Clean burner orifice 2 Contact local natural or propane LP ga...

Page 16: ...tatement at top of page OBSERVED PROBLEM Log Set produces a clicking ticking noise just after burner is lit or shut off Log Set produces unwanted odors Gas odor even when control knob is in OFF positi...

Page 17: ...onal sTechnicalServiceDe partment at 1 800 DESA LOG 1 800 337 2564 WhencallingDESAInternational haveready your name your address modelandserialnumbersofyourfireplace how fireplace was malfunctioning t...

Page 18: ...18 901049 VENTED NATURAL GAS LOGS ILLUSTRATED PARTS BREAKDOWN CVTR18 CVTR24 4 19 23 21 22 20 24 25 26 2 3 8 7 11 10 1 5 6 15 9 14 12 13 27 16 18 5 17...

Page 19: ...Natural Gas 1 12 901761 01 901761 01 1 8 Hex Nipple 1 13 901760 01 901760 01 Manifold Block 1 14 901751 01 901751 01 Air Restrictor 1 15 901756 01 901756 01 Valve Cover 1 16 901056 01 901056 01 Brass...

Page 20: ...s Parts and Service 2444 North 5th Street Hartsville SC 29550 7704 803 332 0191 Parts Department Cans Unlimited Inc P O Box 645 Taylor SC 29687 0013 All States 803 879 3009 1 800 845 5301 Parts Depar...

Page 21: ...___________________ _______________________________________________________________________________________________ ____________________________________________________________________________________...

Page 22: ..._______________________ _______________________________________________________________________________________________ ________________________________________________________________________________...

Page 23: ...___________________ _______________________________________________________________________________________________ ____________________________________________________________________________________...

Page 24: ...log set will be the responsibility of the owner TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHEPRODUCT THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND...

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