CFM UVSTR36 - Manual (Page 7)

7
UVSTR / UVCVR Series Vent-Free Fireboxes
7412960
Install Gas Log Heater
1. Connect the shutoff valve, union and any required
approved fittings (See NOTE below) between the valve
and the gas line.
Access to the gas line on the UV Series firebox is made
through the left or right side of the firebox. Locate the
appropriate gas line in the outer casing of the firebox
and remove the insulation from the gas line tube.
From the inside of the firebox, locate the knockout on
the firebrick - be sure you are on the appropriate or gas
line side of the firebox. Using a flat- bladed screwdriver
or small chisel and hammer, carefully tap around the
knockout until it loosens and falls out.
2. Install the Vent-Free Gas Log Heater exactly as
described in the instructions for the heater. If for any
reason, you do not have these instructions, contact
your dealer or manufacturer for another copy.
NOTE: The gas line connection to the log set can be
made with properly tinned 3/8" copper tubing, 1/2" rigid
pipe, or an approved flex connector. Because some mu-
nicipalities have additional local codes, it is always best
to consult your local authority.
U.S. INSTALLATIONS – Follow local codes and the
National Fuel Gas Code ANSI Z223.1/NFPA 54.
Always check for gas leaks with a mild
soap and water solution. Do not use an
open flame for leak testing.
When using copper or flex connector use only approved
fittings. Always provide a union so that gas line can
be easily disconnected for burner or fan servicing. See
gas specification for pressure details and ratings.
Connect the Gas Line
Gas access holes are provided on both sides of the
firebox.
Check gas valve type. Use only the gas type indicated
on the gas log rating plate. If the gas listed on the plate
is not your type of gas supply, DO NOT INSTALL. Con-
tact your Dealer for the proper model.
Always use an external regulator for all LP fireboxes to
reduce the supply tank pressure to a maximum 14" w.c.
This is in addition to the regulator fitted to the vent-free
heater.
WARNING: Connection directly to an un-
regulated LP tank can cause an explosion.
For final connection of the gas log heater to the gas
line, see Section 5 and Figure 6.
FP598
Fig. 6 Typical gas supply installation.
GF598
nvb GAS SUPPLY INSTALL
12/4/97
1/2" Gas Supply
1/2" x 3/8" Shut-Off Valve
3/8" Nipple
3/8" Union
3/8"
Nipple
Gas Supply Line
Cold Climate Insulation
In cold climates, insulation of the enclosure around the
firebox is suggested to avoid problems with cold air.
Insulating the enclosure around the firebox is recom-
mended, but not a requirement
The following steps are suggested to minimize cold air
problems.
Insulate the base of the firebox with a noncombustible
insulation. This step is particularly important for outside
wall installations over concrete slab floor construction.
If a platform is used to raise the firebox, the insulation
should be placed onto the platform before the firebox is
set. (Fig. 7)
Refer to Page 5, Figure 3 for minimum clearances to
combustibles.
Inspect joints of the firebox as well as the points of seal-
ing between the firebox and the finishing materials.
When a firebox is installed in a chase or on an outside
wall, the enclosure should be insulated like any other
outside wall of the home. Plywood or hardboard may
be placed on the standoffs and insulation placed on this
surface. (Fig. 8)