EN
10
R¾
Figure 7.
Automatic filling
3.4. Installation of the Control Unit and Sensors
•
The control unit includes detailed instructions
for fastening the unit on the wall and installing
the humidity sensor.
•
Install the sensor (WX248), which comes with
the heater, as shown in figure 6.
Do not place the supply air vent so that the air
flow cools the temperature sensor. Figure 5.
3.4.1. Suitable control units
•
Harvia CX30C-U1
•
Harvia CX30C-U3
See more detailed information from table 3.
Heater grade setting of the control unit: See table 4.
Please read the instructions of the control unit.
Shut-off valve
Vacuum breaker
Connection hose
Cold water
150–400 kPa
(1,5–4,0 bar)
Table 3. Supply wires (from the power unit to the heater)
Table 4.
Heater grade setting of the control unit
Heater model
Input
kW
Voltage
Phase
Amperage
Min. 90 °C
Copper supply
wire AWG No.
Suitable control
units
HL(S)7U1S(A)
6,8 + 2,1
240
1 (2 Groups)
18,8 (2 Groups)
12
CX30C-U1
HL(S)9U1S(A)
9,0 + 2,1
240
1 (2 Groups)
25 (2 Groups)
10
CX30C-U1
HL(S)11U1S(A)
10,5 + 2,1
240
1 (2 Groups)
29,2 (2 Groups)
10
CX30C-U1
HL(S)7U3S(A)
6,8
208
3
18,8
12
CX30C-U3
HL(S)9U3S(A)
9,0
208
3
25
10
CX30C-U3
HL(S)11U3S(A)
10,5
208
3
29,2
10
CX30C-U3
Heater model
Heater grade setting of the
control units
HL(S)7U1S(A)
d4
HL(S)9U1S(A)
d4
HL(S)11U1S(A)
d2
HL(S)7U3S(A)
d4
HL(S)9U3S(A)
d4
HL(S)11U3S(A)
d2
