Design Guide HEV-HEH SEriES Heat Controller
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Engineering Design Guide HEV/H SERIES Heat Controller, LLC
Accessories & Options
Hot Water Generator
An optional insulated heat reclaiming desuperheater coil of vented
double-wall copper construction suitable for potable water shall be
pro vid ed. The coil and hot water circulating pump shall be factory
mounted inside the unit. A high limit and low compressor discharge
line temperature switch shall be pro vid ed to disable the pump when
these conditions occur.
Cupro-Nickel Heat Exchanger
An optional corrosion resistant CuNi coaxial heat exchanger shall be
factory in stalled in lieu of standard copper construction.
Thermostat ( eld installed)
A multistage auto-changeover electronic digital thermostat shall be
provided. The thermostat shall offer 3 heating and 2 cooling stages
with precise temperature control. An OFF-HEAT-AUTO-COOL-
EMERG system switch, OFF-AUTO fan switch, and indicating LED’s
shall be provided. The thermostat shall read out in °F or °C. An
optional remote indoor sensor and outdoor sensor use shall be
available on some models.
Auxiliary Heater ( eld installed)
An external, eld-installed electric heater shall provide supplemental
and/or emergency heating capability when used with the three stage
heating thermostat. (Heater is externally mounted on horizontal and
vertical units).
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