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Power Supply Dedicated 115VAC, 60 Hz, 15A.
Gas Supply Pipe Minimum 1/2” NPT (schedule 40 black iron pipe recommended).
Approved Gas Type Natural Gas.
Gas Pressure 6.0” W.C. minimum, 11.0” W.C. maximum.
Venting System Power vent through the wall or vertical through the roof.
Approved Vent Materials PVC, CPVC or ABS.
Minimum clearance for
Servicing
18” from top, 24” from front, 4” sides and rear.
Water Supply Pressure
150 PSI maximum allowable working pressure. Check local codes for
supply pressure.
TCO Limit Residential 118
o
F (87
o
C), Commercial 199
o
F (93
o
C).
Residential Temperature
Set Point Range
60
o
F (16
o
C) to 160
o
F (71
o
C) (approximate temperatures).
Commercial Tempera-
ture Set Point Range
80
o
F (27
o
C) to 180
o
F (82
o
C) (approximate temperatures).
Blower Temperature
Switch
Normally closed, opens @ 165
o
F (74
o
C), auto reset @130
o
F (54
o
C)
Pressure Switch
UTW1 Models:
Normally open, closes on vacuum increase @ -0.68, opens on vacuum
decrease @ -0.65
U4TW Models:
Normally open, closes on vacuum increase @ -0.83, opens on vacuum
decrease @ -0.80
U2TW & UTW4 Models:
Normally open, closes on vacuum increase @ -1.28, opens on vacuum
decrease @-1.25
Blower
U1TW & U4TW Models:
115VAC, 60Hz, 3.1 amps, 3000 RPM, 42 CFM @ 1.5” W.C.
U2TW & UTW4 Models:
115VAC, 60Hz, 3.1 amps, 3000 RPM, 68 CFM @ 0.4” W.C.
Specifications
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