Frost Protection; Commissioning - Servicing - Wolf SEM-1 Instrucciones De Montaje

Commissioning

Frost protection

Servicing
Magnesium anode
Flange
Fault
Leakage of the solar tank
Heating-up time too long
Industrial water temperature too low
3043754_0507

Commissioning - Servicing

The installation and initial commissioning may be performed only by a recognised
installation company.
Flush pipes and tank thoroughly after installation, fill tank with water. Open warm water
flow tap until water runs out and check safety valve by introducing air.
It is essential to fill and completely bleed tank before the first start-up!
Attention: The max. operating pressure is 10 bar and must not be exceeded!
Exceeding the permissible operating pressure may cause leakages and destruction
of the storage tank.
Operation with charging pump:
Set tank temperature controller SP1 to desired temperature (60°C max.).
When connecting an electronic tank sensor, the tank temperature is set at the
boiler control.
Operation with electrical auxiliary heating system E2 / E4,5 / E6
Set tank temperature controller of the heating control to 20°C.
Turn tank temperature controllers of the electrical auxiliary heating system to
desired temperature (60°C max).
In case of prolonged absence, the tank temperature controller can be turned completely
to the left (counter-clockwise). The frost protection function remains active.
The unit must be checked by a professional company every 2 years.
In case of a built-in magnesium anode, the protective effect is based on an
electrochemical reaction, which results in a decomposition of the magnesium. For
this reason, it must be checked every 2 years and replaced if necessary.
When changing the anode, the tank pressure must be relieved.
Close cold water connection, switch off circulating pump and open any hot water tap
in the house.
When using a built-in impressed-current anode, no servicing is required.
After removing the flange the seal has to be replaced prior to reassembly, torque of
Attention
nuts 20-25 Nm.
Cause
Flange leaking
seal.
Pipe connections leaking
Heating water temperature too low
(measure at the supply of solar tank,
not at the boiler)
Heating water amount too small
(causes large spreading,
i.e. return temperature too low)
Heating coil does not bleed
Calcification of heating surfaces
Thermostat switches off too early
Return temperature too low
(e.g. excessive spreading)
Remedy
Re-tighten screws. Replace
Re-seal
Increase temperature (adjust controller)
Larger pump
Observe back pressure of parallel
heater circuit
Bleed repeatedly with switched-off
pump
Decalcify heating area with suitable
products (not mechanically)
Reset thermostat
Larger charging pump
SEM-1
15