Install in accordance with applicable standards and regulations.
No blocking devices, valves, pumps, armatures or reducing devices may be fitted to safety lines,
extension lines to open systems or feeder pipes to safety valves in closed systems.
Safety valves and running-dry protection devices should be fitted directly to the outflow pipe (no valves).
3.4.5 Overflow from safety valve and expansion tank
Install in accordance with applicable standards and regulations.
3.4.6 Safety valves and safety pipe
These are carried out in accordance with the water norm and the National Labour Inspection's directions.
The overflow from the safety valve and the expansion tank
These are carried out in accordance with the National Labour Inspection's directions.
3.4.7 Pump
The size of the circulation pump ought to be determined by calculation on the basis of the size of the
system, pipe dimension and execution. The pump can be connected to the boiler control by means of the
plug supplied.
3.4.8 Protection against freezing
The central heating system can be protected against freezing with anti-freeze, but remember that the hot
water tank (if connected) is not protected. We recommended having a plumber add the anti-freeze if
protection against freezing is required.
3.5 Electricity connection
Here, the normal trade guidelines are valid.
Electricity connection to the boiler takes place by means of the cable which is supplied.
3 x Phase + Zero and earth. There must be a cut-out switch in the permanent installation.
Type MULTI-HEAT Standard model (400 V)
(1) = L1, (2) = L2, (3) = L3, (4) = zero, yellow/green = earth - see relevant technical data.
Type MULTI-HEAT Special model (230 V)
(Brown) = L1, (Blue) = Neutral, (Yellow/green) = earth
( ) = cable colour(s).
For electrical diagrams - see section 4.2 - Electrical Diagrams.
The pump is attached to the plug enclosed in a plastic bag (no. 100350).
