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INSTALLATION
Continued
7. Mark screw locations through one hole
on each side of the mounting bracket
(see Figure 12). If installing in a brick-
bottom fireplace, mark screw locations
in mortar joint of bricks.
8. Remove heater base from fireplace. If
installing optional control accessories,
do so at this time. Follow all directions
provided with accessory.
9. Drill holes at marked locations using
3/16" drill bit.
10. Attach base assembly to fireplace floor
using two masonry screws (in hardware
package).
Flexible Gas
Hose (if allowed
Fitting
by local codes)
Figure 11 - Attaching Flexible Gas Hose
to Heater
Masonry Screw
Mounting Flanges
Figure 12 - Attaching Base Assembly to
Fireplace Floor
108382
CONNECTING TO GAS
SUPPLY
WARNING: A qualified service
person must connect heater to
gas supply. Follow all local codes.
WARNING: Never connect
propane/LP heater directly to the
propane/LP supply. This heater
requires an external regulator (not
supplied). Install the external
regulator between the heater and
propane/LP supply.
WARNING: Never connect
natural gas heater to private (non-
utility) gas wells. This gas is com-
monly known as wellhead gas.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (for propane/LP units
only, 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
* 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 24.
For Propane/LP Gas: The installer must
supply an external regulator. The external
regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to
between 11 and 14 inches of water. If you do
not reduce incoming gas pressure, heater
regulator damage could occur. Install exter-
nal regulator with the vent pointing down as
shown in Figure 13. Pointing the vent down
protects it from freezing rain or sleet.
11
OWNER'S MANUAL
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 an 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 14, page 12).
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 appliance.
Check your building codes for any special
requirements for locating equipment shutoff
valve to fireplaces.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
WARNING: Use pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
Propane/LP
Supply
Tank
Figure 13 - External Regulator With Vent
Pointing Down (propane/LP gas only)
For more information, visit www.desatech.com
External
Regulator
Vent
Pointing
Down
Continued
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