CHS High Capacity Steam Boilers are uniquely
designed for larger commercial applications,
laboratories, hospitals and industrial plants.
CHS boilers are ideal for stand-by operations
requiring high pressure steam in remote
areas of an industrial plant which might incur
excessive pipe losses or expensive piping
costs to supply from a central steam supply.
CHS boilers are particularly suited for use in
off season periods when steam is needed for
critical processes or humidification and the
main boiler is shut down.
CHS Stock Boilers are Trimmed at 150 psig
for operation up to 135 psig corresponding to
353°F. They are also available with 15, 30, 50
and 100 psig trim. All catalog CHS boilers are
Water Feed (Pump) Control and Low Water
Cutoff (McDonnell Miller #157) automatically
maintains correct water level and shuts off the
boiler when the water level in the boiler drops
below safe limits.
Water Level Sight Glass allows for constant
visual observation of the water level in the
boiler during operation.
Auxiliary Low Water Cutoff — Solid state
control board with low voltage probe provides
backup protection for low water level in the
Steam Pressure Gauge with a range to 250
psig provided for visual indication of steam
Long Life Heating Elements — Conservatively
rated flange mounted 0.475” dia. copper
sheath heating elements provide uniform
water circulation and long life.
Full Port Blow Down Drain Valves — Two
heavy duty gate or ball valves connected in
series for high pressure are supplied for boiler
Integral Electrical Controls and Power Panels
with fuses and contactors mounted in heavy
gauge control cabinet(s) with hinged doors
and captive fasteners.
Control Circuits are 120V/1/60 Hz (Standard)
— 220V/1/50 Hz control circuits are available
for export boilers. Transformers are optional.
Manual On-Off Switch allows boiler control
and power circuits to be shut down locally.
Pilot Light visually indicates when boiler
control circuit is energized and the boiler is
Fiberglas® Insulation material around the
entire pressure vessel minimizes heat loss and
helps reduce energy costs.