Unical PK 300 X 2S Instruction Manual download pdf (Page 30)

Instructions for the installer

3.17 - SYSTEM FILLING AND DRAINING

Warning!

Do not mix the CH system's water with anti-

freeze or anti-corrosion solutions using

wrong concentrations! It could cause dama-

ge to the washers and could provoke noise

during normal boiler operation.

UNICAL refuses all liability for injury to

persons, animals or damage to property

deriving from not having respected the above

mentioned recommendations.

After completing all the system's service connections the

circuits may be filled.

To fill the system it is necessary to fit a filling cock on the

system's return.

The boiler is equipped with its own drain tap, whose

position is indicated in the figure on page 17.

This tap must NEVER be used for draining of the whole

system as this could lead to system dirt gathering in the

boiler, compromising good boiler operation. Therefore, the

system has to be fitted with its own draining tap, of the right

size for the system's capacity.

GRUPPO DI

CARICAMENTO

EXAMPLE OF FILLING MANIFOLED

FILLING MANIFOLD

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Unical PK 300 X 2S Instruction Manual Page 30