Installation Of The Control Unit And Sensors; Suitable Control Units - Harvia HL7U1S Manuel De L'utilisateur/Opérateur

Heater model
HL(S)7U1S(A)
HL(S)9U1S(A)
HL(S)11U1S(A)
HL(S)7U3S(A)
HL(S)9U3S(A)
HL(S)11U3S(A)
Table 3. Supply wires (from the power unit to the heater)

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.
Figure 7. Automatic filling
10
Input Voltage Phase
kW
6,8 + 2,1 240 1 (2 Groups)
9,0 + 2,1 240 1 (2 Groups)
10,5 + 2,1 240 1 (2 Groups)
6,8 208 3
9,0 208 3
10,5 208 3
EN
Amperage
18,8 (2 Groups)
25 (2 Groups)
29,2 (2 Groups)
18,8
25
29,2
Heater model
HL(S)7U1S(A)
HL(S)9U1S(A)
HL(S)11U1S(A)
HL(S)7U3S(A)
HL(S)9U3S(A)
HL(S)11U3S(A)
Heater grade setting of the control unit
Table 4.
Vacuum breaker
R¾
Min. 90 °C Suitable control
Copper supply units
wire AWG No.
12 CX30C-U1
10 CX30C-U1
10 CX30C-U1
12 CX30C-U3
10 CX30C-U3
10 CX30C-U3
Heater grade setting of the
control units
d4
d4
d2
d4
d4
d2
Shut-off valve
Cold water
150–400 kPa
(1,5–4,0 bar)
Connection hose