EarthLinked DSH-1872, Manual

Page: 8 / 20

DSH KIT (04/13) Page 8
Mounting/Location
The Desuperheater is mounted vertically on a solid surface indoors in a space with ambient
temperatures of 40°F or above. The Desuperheater is to be located within 10 feet of the
compressor unit and as close as possible to the storage water heater (not to exceed 25 feet),
with interconnecting water lines insulated.
Controls
As illustrated in Figures 3a and 3b, the Desuperheater contains a water high limit control. It is
factory set to 140°F. It also contains a refrigerant gas low limit, which is factory set to 125°F.
The freeze protection control is designed to operate the circulating pump when water
temperatures of 40°F or less are detected, in order to provide water circulation independent of
compressor operation.
Heat Exchanger
The Model DSH-1872 Desuperheater contains a corrosion resistant all-copper double wall heat
exchanger of counterflow twin tube design. The heat exchanger is continuously vented along its
entire length and meets IAPMO safety requirements and exceeds applicable UL requirements.
Circulator Pump
The Desuperheater contains a Taco 006 series low wattage wet rotor in-line single stage
circulator. The water cooled pump is rated at 60 watts, 230 volts and 0.40 amperes. It is
designed for 125 psig working pressure and up to 220°F fluid temperature. The pump housing is
bronze and the bearings are ceramic.