Cerbos QUAD 10, User And Service Manual, Page: 27 / 38

Figure 26 - Diagram of electrical connections for the controller - pump group module ( WZ + gp , WZO + gp )
Other options for connecting the boiler to the electrical system are presented in the controller
manual attached to the boiler.
6 Using the boiler
Boiler operation includes activities related to boiler start-up, preparation for commissioning,
operation modes, extinguishing and cleaning. These steps should be performed in the following order:
a) Filling the boiler with mains water
b) Filling the fuel container with pellets (including filling the feeder pipe) (WZ, WZO, WZ +
GP , WZO + GP )
c) Start-up and setting of operating modes
d) Putting out the boiler
e) Cleaning the boiler
6.1 Filling and draining the boiler with water
WARNING!
It is forbidden to fill the boiler with water or top it up with water while
the boiler is in operation. Allow the boiler to cool down before refilling
water.
The boiler must be filled with water via the water drain socket (see Figure 1 - w11) . In the case of
the WZ + gp or WZO + gp variant, it is allowed to fill the boiler with connection "c" (see Figure 18 ). On
the other hand, the boiler can only be emptied using the drain connection.
Fill the boiler with water before starting the boiler start-up procedure. If the boiler has been started
and cooled down, the amount of water should be filled up with heated water. It is recommended to
use softened water with a PH value of 7. After filling, check the tightness of the boiler and installation .
6.2 Fuel requirements