Switching The Boiler Off; Prolonged Standstill Of The System. Frost Protection; Gas Change; Servicing Instructions - Baxi PRIME HT 240 Installers And Users Instructions

PRIME HT 240 - HT 280 - HT 330 PRIME HT 1.120 - HT 1.240 - HT 1.280
Boiler filling cock
Boiler filling cock
Boiler drain cock
Figure 4a Figure 4b
The boiler is equipped with a water pressure switch that prevents the boiler from starting up if there is no water in the
system.

5. SWITCHING THE BOILER OFF

To switch the boiler off, simply turn the selector "1" to the "0" position. This switches off the electricity supply to the
appliance.

6. PROLONGED STANDSTILL OF THE SYSTEM. FROST PROTECTION

We recommend you avoid draining the whole system as water replacements engender purposeless and harmful limesto-
ne deposits inside the boiler and on the heating elements.
In case the boiler is not operated during wintertime and is therefore exposed to danger of frost we suggest you add some
specific-purpose anti-freeze to the water contained in the system (e.g.: propylene glycole coupled with corrosion and
scaling inhibitors).
The electronic management of boilers includes a "frost protection" function in the central heating system which operates
the burner to reach a heating flow temperature of 30° C when the system heating flow temperature drops below 5°C.
The frost protection function is enabled if:
* electrical supply to the boiler is on;
* the gas service cock is open;
* the system pressure is as required;
* the boiler is not blocked.

7. GAS CHANGE

These boilers produced for natural gas can be converted to work with LPG.
Any gas change must be effected by a Qualified Service Engineer.

8. SERVICING INSTRUCTIONS

To maintain efficient and safe operation of your boiler have it checked by a Qualified Service Engineer at the end of every
operating period.
Careful servicing will ensure economical operation of the system.
Do not clean the outer casing of the appliance with abrasive, aggressive and/or easily flammable cleaners (i.e.: gasoline,
alcohol, and so on). Always isolate the electrical supply to the appliance before cleaning it (see section 5 Turning off the
boiler).
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INSTRUCTIONS FOR THE USER