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P
ower Supply Dedicated 115VAC, 60 Hz, 15A.
G
as Supply Pipe Minimum 1/2” NPT (schedule 40 black iron pipe recommended).
A
pproved Gas Type Natural Gas.
G
as 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
1
8” 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
U2TW Models:
Normally open, closes on vacuum increase @ -1.28, opens on vacuum
decrease @-1.25
Blower
UTW1 Models:
115VAC, 60Hz, 3.1 amps, 3000 RPM, 42 CFM @ 1.5” W.C.
U2TW Models:a,
115VAC, 60Hz, 3.1 amps, 3000 RPM, 68 CFM @ 0.4” W.C.
Specifications
8