Connecting To Gas Supply - Comfort Glow CGS2718P Owner's Operation And Installation Manual

INSTALLATION
Continued
5. Remove heater base from fireplace.
6. Drill holes at marked locations using
3/16" drill bit.
7. Attach base assembly to fireplace floor
using two masonry screws (in hardware
package) (see Figure 12).
8. Connect to gas supply. See Connect-
ing To Gas Supply.
Fitting
Flexible Gas Hose
(if allowed by local codes)
Figure 11 - Attaching Flexible Gas Hose
to Heater Gas Regulator
Figure 12 - Attaching Base Assembly to
Fireplace Floor
104386
CONNECTING TO GAS
SUPPLY
WARNING: A qualified ser-
vice person must connect heater
to gas supply. Follow all local
codes.
heater directly to the propane/LP
supply. This heater requires an
external regulator (not supplied).
Install the external regulator be-
Heater Gas
tween the heater and propane/LP
Regulator
supply.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
Masonry
• manual shutoff valve *
Screw
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* An A.G.A. design-certified manual shutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Pur-
chase the optional A.G.A. design-certified
manual shutoff valve from your dealer. See
Accessories, page 25.
The installer must supply an external regu-
Mounting lator. The external regulator will reduce
Bracket
incoming gas pressure. You must reduce
incoming gas pressure to between 11 and 14
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
13. Pointing the vent down protects it from
freezing rain or sleet.
CAUTION: Never connect
11
OWNER'S MANUAL
Propane/LP
Supply Tank
Vent Pointing Down
Figure 13 - External Regulator With Vent
Pointing Down
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
pressure will occur.
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
heater (see Figure 14, page 12).
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.
CAUTION: Use pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
Install sediment trap in supply line as shown
in Figure 14, page 12. 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 mois-
ture and contaminants. This keeps them
from going into heater controls. If sediment
trap is not installed or is installed wrong,
heater may not run properly.
External Regulator
Continued