Wolf MKS 85 Installation & Servicing Instructions Manual page 13

Connections
Pipework
Boiler - Heating
Filling the Heating Equipment
Emptying the Heating Equipment
Minimum Boiler Power
Type
Power range kW
Minimum boiler power
kW
Burner stage 1
Installation / Minimum Boiler Powers
Venting
Safety flow
Exhaust pipe connection
Emptying and filling
Connect the boiler flow and boiler return to the appropriate connections on the boiler.
See above for the connections.
In order to prevent reverse circulation, a check-valve must be fitted behind the heating
circuit pump(s).
A safety group must be fitted.
It must not be possible to shut off the connecting line between the boiler and the safety
valve!
Connect floor heating via a four-way mixer.
System isolation by means of a heat exchanger is necessary for pipes or air conditioned
floors that are not proof against diffusion.
The boiler and the heating equipment may only be filled when a safety valve that accords
with regulations (maximum opening pressure 3 bar) has been fitted to the boiler's
"venting" connection.
In order to fill the heating equipment, fit a filling and emptying cock to the "emptying and
filling " connection, and connect a water hose.
When filling the equipment, watch the pressure indication on the safety group.
Check the safety valve for correct operation.
Vent the boiler (automatic venting valve).
Switch the equipment off and allow it to cool.
Open the emptying cock at the boiler.
Open the venting valves at the radiators.
To avoid falling below the dew point, the following minimum boiler powers are
necessary in the 1st stage of 2-stage burners:
85 100 140
70-100 85-120 110-160 160-230 200-300 280-380 360-460 420-550
51 60 84
Boiler flow
MKS
190 250 340
114 150 204
Boiler return
MUS
420 500 85
70-85
252 300 51
100
85-100
60
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