Manual Elco R3600 (page 30 of 192) (English, German, Dutch, French, Italian)

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Commissioning

Check functionality of safety devices

Gas tightness check

Boiler shut down

Water flow temperature sensor (1)

Disconnect the plug from the sensor

while the boiler is switched on. This

should result in a lockout no. 12.

The lockout should disappear as soon

as the plug is placed back in position,

the boiler will restart.

Water flow switch (2)

Close (slowly!) the valve in the flow

connection to the system while the boi-

ler is running on minimum load.

When the valve is almost closed and

the water flow is insufficient, the water

flow switch will switch off and the

boiler will go in lockout 40. Open the

valve. A manual reset is necessary.

Minimum gas pressure switch (4)

Close the gas cock when the boiler is in

standby position (K). Open the test

point on the gas valve (3) while meas-

uring the gas pressure on the test point

of the gas pressure switch (5).

The boiler will go in lockout no. 2 when

the switch off setting is achieved. Close

both test points and open the gas cock.

Check functionality of safety devices

All safety devices have to be checked

on good functioning. Safety devices on

a standard boiler are a water flow tem-

perature sensor, water flow switch,

minimum gas pressure switch and ioni-

sation electrode. These devices can be

checked as described below.

Ionisation electrode (6)

Remove electrical connection from the

ionisation electrode while the boiler is

running, the boiler will go in lockout

no.5. The boiler will try to restart. With

the electrical connection removed, the

restart will result in lockout no. 4. When

the connection is already mounted, the

restart will be successful.

Measuring the ionisation current can

be done by mounting a multi-meter (set

to µA) in between the ionisation elec-

trode and its electrical connection. The

ionisation current should always be

above 1.2 µA, in normal conditions it

will be 6 µA and above.

Gas tightness check

Check the gas tightness of all sealed

connections with an approved soap or

electronic gas analyzer, for example:

Test points

Bolt connections

Gaskets of mixing system, etc.

Boiler shut down

When the boiler will not be used for

longer periods, shut down the boiler by

following procedure:

Switch the boiler in standby operation

(K)

Switch off the boiler with the on/off

switch (7)

Disable power supply to the boiler by

deactivating the mains isolator switch

in the boiler room

Close the gas supply to the boiler.

1 2

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Elco R3600 Manual

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