Energy Master HHPM SERIES, Инструкции по установке, эксплуатации, техническому обслуживанию и ремонту

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Manual Heat Pump Model HHPM-V.2- SEP 2012
16
3.6 Condensate Drain
Heat pump draw air into the evaporator to absorb heat. The air is dehumidified producing
condensate on the surface of the evaporator coil. This condensate is collected in the coil drain pan and
must be piped away to a suitable drain system. Drain pipe connection
25
MM
. is provided for draining the
condensate from the unit. This connection is located on the underside of the heat pump base. Pipe the-
condensate drain with a "P" trap to prevent drain system air from being drawn back into the unit. Figure 8
shows the construction of "P" trap with a cleanout feature constructed from all PVC fittings.
Figure 7. PVC "P" trap
3.7 Tank Temperature Sensor
Heat pump water heater is controlled by a tank temperature sensor which senses storage tank
temperature and turns the heat pump on and off to maintain a preset temperature. The tank temperature
sensor will be installed and wired by the job contractor.
There are two adjustments, Setpoint and Differential, which must be set properly by the installer for
the water heating system to operate correctly.
The Setpoint is the temperature at which stop the heat pump.
The Differential is the temperature difference between the Setpoint and the temperature at which the
heat pump starts.
For example, Tank temperature with 60
o
C Setpoint and 5
o
C Differential settings would start
the heat pump when tank temperature falls to 60 - 5 = 55
o
C, and stop the heat pump when
tank temperature is brought up to 60
o
C.
It is essential to set the Differential large enough so that heat pump runs for at least 10 minutes