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104462
VENT-FREE PROPANE/LP GAS STOVE HEATER
DESA INTERNATIONAL
CAUTION: Use pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
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 heater. If
pipe is too small, undue loss of
volume will occur.
Installation must include a equipment 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
heater (see Figure 21, SVYD18PR and
FSVYD18PR series, or Figure 22, page 13,
SVYD18P and FSVYD18P series).
IMPORTANT:
Install equipment shutoff
valve in an accessible location. The equip-
ment shutoff valve is for turning on or
shutting off the gas to the appliances.
Check your building codes for any special
requirements for locating equipment shutoff
valve to fireplaces.
Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
WARNING: Never connect
heater to private (non-utility) gas
wells. This gas is commonly
known as wellhead gas.
The gas inlet connection for the stove heater
is located on the lower right-hand side of the
stove when viewed from the front of the
unit. The gas connection can be made either
through the bottom right side or through the
lower back opening as illustrated in Figure
19. Make sure gas log heater is secured to
the stove cavity assembly.
The installer must supply an external regu-
lator. The external regulator will reduce
incoming gas pressure. You must reduce
incoming gas pressure to between 11 and 14
INSTALLATION
Continued
CONNECTING TO GAS
SUPPLY
WARNING: A qualified service
person must connect heater to
gas supply. Follow all local codes.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certified equipment shutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Pur-
chase the optional CSA design-certified
equipment shutoff valve from your dealer.
See Accessories, page 33.
Figure 19 - Gas Regulator Location and
Gas Line Access Into Stove Cabinet
Back Stove
Panel
Front
of
Stove
Unit
Gas Inlet
Connection
Access
Product
Identification
Label
Gas
Log
Heater
Back View
Side View
Figure 21 - Gas Connection (SVYD18PR and FSVYD18PR Series)
CAUTION: Never connect
heater directly to the propane/LP
supply. This heater requires an
external regulator (not supplied).
Install the external regulator be-
tween the heater and propane/LP
supply.
Figure 20 - External Regulator With Vent
Pointing Down
WARNING: This appliance re-
quires a 1/2" NPT (National Pipe
Thread) inlet connection to the
pressure regulator.
inches of water. If you do not reduce incom-
ing gas pressure, heater regulator damage
could occur. Install external regulator with
the vent pointing down as shown in Figure
20. Pointing the vent down protects it from
freezing rain or sleet.
3" Minimum
Sediment
Trap
Gas
Control
From External
Regulator (11" W.C.**
to 14" W.C. Pressure)
CSA Design-Certified Equipment
Shutoff Valve With 1/8" NPT Tap*
Approved Flexible Gas
Hose (if allowed by local
codes)
Tee
Joint
Pipe
Nipple
Cap
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down