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UVS27 Vent-Free Gas Heater
20007068
This appliance should only be connected
by a qualified gas technician. Test to
confirm manifold pressures as specified
below.
The UVS27 and its individual shutoff valve must
be disconnected from the gas supply piping dur-
ing any pressure testing of that system at test
pressures in excess of 1/2 psig (3.5 kPa).
The UVS27 must be isolated from the gas supply
piping system by closing its individual manual
shutoff valve during any pressure testing of the
gas supply piping system at test pressure equal
to or less than 1/2 psig.
There must be a gas shutoff between the stove
and the supply.
In order to connect Natural Gas, use a fitting
with 1/2” NPT on the valve side and 1/2” natural
gas supply line with an input of 28,000 BTUs at a
manifold pressure of 3.5” between minimum inlet
supply of 5.5” w.c. and maximum of 14.0” w.c.
In order to connect Propane, use a fitting with 1/2”
NPT on the valve side and 1/2” propane gas sup-
ply line with an input of 28,000 BTUs at a manifold
pressure of 11.0” between a minimum inlet sup-
ply of 11.0” w.c. and maximum of 14.0” w.c.
CAUTION
Connect the Gas Supply Line
Check the Rating Plate attached by a steel cable to the
firebox, to confirm that you have the appropriate firebox
for the type of fuel to be used.
The appliance should have a main gas valve provided
in an accessible location for turning on or shutting off
the gas to the main burner.
This appliance should only be connected by a
qualified gas technician. Test to confirm manifold
pressures as specified below.
The UVS27 and its individual shutoff valve must be
disconnected from the gas supply piping during
any pressure testing of that system at test pres-
sures in excess of 1/2 psig (3.5 kPa).
The UVS27 must be isolated from the gas supply
piping system by closing its individual manual
shutoff valve during any pressure testing of the gas
supply piping system at test pressure equal to or
less than 1/2 psig.
There must be a gas shutoff between the stove and
the supply.
In order to connect Natural Gas, use a fitting with
3/8” NPT nipple on the valve side and 1/2” natural
gas supply line with an input of 28,000 BTUs at a
manifold pressure of 3.5” and minimum inlet supply
for adjustment of 5.5” w.c.
In order to connect Propane, use a fitting with 3/8”
NPT nipple on the valve side and 1/2” propane gas
supply line with an input of 28,000 BTUs at a mani-
fold pressure of 11.0” and minimum inlet supply for
adjustment of 11.0” w.c.
Gas connection should be made in accordance with
current National Fuel Gas Code, ANSI Z223.1/NFPA
54. Since some municipalities have additional local
codes, be sure to consult you local authority.
Connect the gas supply and test for leaks. Use a 50/50
solution of liquid soap and water to test for leaks at gas
fittings and joints. NEVER test with an open flame.
Light the pilot according to the directions on Psage 17,
before going to the next step.
Install Log Set
WARNING
Failure to position the parts in accordance with
this diagram or, failure to use only parts specifi-
cally approved with this heater, may result in
property damage or personal injury. Do not alter
the logs!
Loose material shall be installed per the instruc-
tions. Replacement of loose material must be
purchased from the original room heater manu-
facturer and application of excess loose material
may adversely affect performance of heater.
Warning: All previously applied loose material
must be removed prior to reapplication.
1. Remove the logs from their packaging, and inspect
each piece for damage. DO NOT INSTALL DAM-
AGED LOGS.
2. Install the rear log by placing it on the sheet metal
shelf at the back of the firebox. (Fig. 17) The log
should touch the back wall of the firebox and be
centered.