Product Specifications; Water Vapor: A By-Product Of Unvented Room Heaters - White Mountain Hearth WHISKEY RIVER VFDR18LBW10N-1 Installation And Owner's Manual

Model
VFDR(18,24,30)LBW
VFDR18LBW10
VFDT(18,24,30)LBW
VFDM(18,24,30)LBW
VFDR18LBW10N
VFDR18LBW10P

wATer VAPOr: A By-PrODucT OF uNVeNTeD rOOM HeATerS

Water vapor is a by-product of gas combustion. An unvented room
heater produces approximately one (1) ounce (30ml) of water for
every 1,000 BTU's (.3KW's) of gas input per hour.
Unvented room heaters must be used as supplemental heat (a
room) rather than a primary heat source (an entire house). In most
supplemental heat applications, the water vapor does not create a
problem. In most applications, the water vapor enhances the low
humidity atmosphere experienced during cold weather.
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PrODucT SPecIFIcATIONS

Gas Valve Type
Natural
Millivolt
Propane
Natural
Millivolt
Propane
Natural
Thermostat
Propane
Natural
Manual
Propane
Model
Max. Rate
VFDR18LBWN
VFDR18LBWP
VFDR24LBWN
VFDR24LBWP
VFDR30LBWN
VFDR30LBWP
VFDT18LBWN
VFDT18LBWP
VFDT24LBWN
VFDT24LBWP
VFDT30LBWN
VFDT30LBWP
VFDM18LBWN
VFDM18LBWP
VFDM24LBWN
VFDM24LBWP
VFDM30LBWN
VFDM30LBWP
regulator Pressure
Setting
3.5" W.C.
10.0" W.C.
3.5" W.C.
10.0" W.C.
6.0" W.C.
10.0" W.C.
6.0" W.C.
10.0" W.C.
BTU/hr. BTU/hr.
Med. Rate
10,000 N/A
10,000 N/A
28,000 N/A
28,000 N/A
34,000 N/A
34,000 N/A
40,000 N/A
40,000 N/A
28,000 N/A
28,000 N/A
34,000 N/A
34,000 N/A
40,000 N/A
40,000 N/A
28,000 23,000
28,000 25,000
34,000 29,000
34,000 30,000
40,000 32,000
40,000 36,000
The following steps will help insure that water vapor does not
become a problem.
1. Be sure the heater is sized properly for the application, including
ample combustion air and circulation air.
2. If high humidity is experienced, a dehumidifier may be used to
help lower the water vapor content of the air.
3. Do not use an unvented room heater as the primary heat source
(an entire house).
Gas Inlet Pressure Gas Inlet Pressure
Max
10.5" W.C.
13.0" W.C.
10.5" W.C.
13.0" W.C.
10.5" W.C.
13.0" W.C.
10.5" W.C.
13.0" W.C.
BTU/hr.
Min. Rate
N/A
N/A
19,000
22,000
24,000
26,000
27,000
31,000
19,000
22,000
24,000
26,000
27,000
31,000
19,000
22,000
24,000
26,000
27,000
31,000
Minimum
4.5" W.C.
11.0" W.C.
5.0" W.C.
11.0" W.C.
7.0" W.C.
11.0" W.C.
7.0" W.C.
11.0" W.C.
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