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UH-PRC002-EN58
Mechanical
Specifications
Field Installed Accessories
High Gas Line Pressure Regulator
(Natural gas units only)
Reduces main gas line pressure to a
minimum of seven inches W.C.. Pressure
at the jobsite must be specified. The
regulator is selected to accommodate
that specific pressure.
Thermostats
Low voltage room thermostat, single-
stage.
Low voltage room thermostat, single-
stage with summer/winter switch.
Low voltage duct thermostat, single-
stage.
Universal tamperproof guard for all
room thermostats.
Low voltage room thermostat, two-
stage.
Low voltage duct thermostat, two-stage.
Room thermostat, electronic modulating
control.
Duct thermostat, electronic modulating
control.
Override room thermostat, for use with
duct thermostat and electronic
modulating control.
Discharge Nozzles
Y Splitter
30° Downward (100-400 MBh only)
60° Downward (100-400 MBh only)
90° Downward (100-400 MBh only)
Factory Installed Options
Heat Exchanger Options
Type 409 Stainless Steel
Heat exchanger tubes and headers are
seam welded 20-gauge Type 409
stainless steel.
Type 321 Stainless Steel
Heat exchanger tubes and headers are
seam welded 20-gauge Type 321
stainless steel. (Not available on 30, 45,
60 and 75 MBh units.)
Additional Options
Type 409 Stainless Steel Burners
(Not available on 30, 45, 60 and 75 MBh
units.)
Type 409 Stainless Steel Draft Diverter
(Not available on 30, 45, 60 and 75 MBh
units.)
Orifices for elevations over 2,000 feet
Summer/Winter Switch
Vertical Louvers
Duct Discharge Flange
(Centrifugal fan units only) Provided in
lieu of louvers on units for use with field
ductwork.
OSHA Fan Guards – All Propeller Units
OSHA fan guards are available as a
factory installed or field installed option.