Airwell WELLEA SPLIT A R3 Installationsanleitung Seite 27

Code Assembly unit
Automatic air purge valve
1
2 Expansion vessel (8 L)
Refrigerant gas pipe
3
4 Refrigerant liquid pipe
Temperature sensors
5
Drainage port
6
Manometer
7
8 Flow switch
Pump_i
9
10 Plate heat exchanger
11 Water outlet pipe
Water inlet pipe
12
13 Pressure relief valve
14 Electrical heating belt(14.1-14.2)
15 Internal backup heater
8
1
14.2
15
2
7
13
11 3 4
6
Remaining air in the water circuit will be automatically removed
via the automatic air purge valve.
Four temperature sensors determine the water and refrigerant
temperature at various points.
5.1-T2B; 5.2-T2; 5.3-Tw_out; 5.4-Tw_in; 5.5-T1
The manometer allows readout of the water pressure in the water
circuit.
If water flow is below 0.6 m
water flow reach 0.66 m
The pump circulates the water in the water circuit.
Heat exchanging between water and refrigerant.
The pressure relief valve prevents excessive water pressure in the
water circuit by opening at 43.5psi(g)/0.3MPa(g) and discharging
some water.
They are for preventing frozen.(14.2 is optional)
The backup heater consists of an electrical heating element that will
provide additional heating capacity to the water circuit if the heating
capacity of the unit is insufficient due to low outdoor temperatures, it
also protects the external water piping from freezing during cold periods.
26
5.3
5.1
14.1
10
5.4
5.2
9
12
Explaination
/
/
/
/
/h, the flow switch open, then when the
3
/h,the flow switch close.
3
/
/