Desa CGFP28NT - Manual (Page 14)

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UNVENTED (VENT-FREE) NATURAL GAS FIREPLACE
CGFP28N and CGFP28NT
* Purchase the optional A.G.A. design-cer-
tified manual shutoff valve from your dealer.
See Accessories, page 25.
INSTALLING GAS PIPING TO
FIREPLACE LOCATION
Installation Items Needed
Before installing fireplace, make sure you
have the items listed below.
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• manual shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• approved flexible gas line with gas con-
nector (if allowed by local codes) (not
provided)
* 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.
NOTICE: A qualified service per-
son must connect fireplace to
gas supply. Follow all local codes.
WARNING: Never connect
fireplace to private (non-utility)
gas wells. This gas is commonly
known as wellhead 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 fireplace. 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
fireplace (see Figure 30).
Check your building codes for any special
requirements for locating manual 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 fireplace 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 30. Locate sediment trap where it
is within reach for cleaning. Locate sedi-
ment trap where trapped matter is not likely
to freeze. A sediment trap traps moisture
and contaminants. This keeps them from
going into fireplace gas controls. If sedi-
ment trap is not installed or is installed
wrong, fireplace may not run properly.
Mantel Clearances for Built-In
Installation
If placing mantel above built-in fireplace,
you must meet minimum clearance between
mantel shelf and top of fireplace opening
(see Figure 29).
If your installation does not meet the mini-
mum clearances shown in Figure 29, you
must:
• raise the mantel to an acceptable height,
OR
• remove the mantel.
Figure 29 - Minimum Mantel Clearances
for Built-In Installation
INSTALLATION
Continued
20"
24
1
/2
"
27
1
/2
"
30"
2 1/2 "
6"
8"
10"
Mantel Shelf
A.G.A. Design-Certified
Manual Shutoff Valve
With 1/8" NPT Tap*
3" Minimum
From Gas
Meter
(5" W.C.
to 10.5"
W.C.
Pressure)
Approved
Flexible
Gas Line
Tee Joint Cap
Figure 30 - Gas Connection
Pipe Nipple
Sediment Trap
Note:
All Vertical
measurements
are from top of
fireplace
opening to
bottom of
mantel shelf.
All measure-
ments are in
inches.