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Air Source Heat Pump Water Heater
19
8 Installation Diagram of the Unit
Figure 8-1 Installation diagram of the unit
Table 8-1 Dimensions and specifications
Name
Interfacing Pipe Screw Thread
Hot water outlet of the water tank
G1/2
Cold water inlet of the water tank
G1/2
In the installation diagram of the unit, the dotted lines indicate the installation
diagram for installing the preheating water return function. With this function, it is
ensured that the water in the pipe between the water tank and the location for water
use is hot. That is, the user can always use hot water when opening the tap. This
does not require the user to drain the cold water for use of hot water. This function
requires the installation of a water return system (water return pump, water return
pipes, and water return check valve and temperature sensor for water return pipes)
during the installation of the unit. Wilo RS15/6 is recommended for the water return
pump. If other pumps are used, the requirements are as follows: flow
≥ 1 m
3,
; lift
≥ 6
m. A length of about 10 m is recommended for the water return pipe, and a
resistance of 50 k
Ω
is recommended for the
cycle temperature sensor
.