22
Adjustment and Maintenance
[authorized by ITALTHERM].
Before boiler ignion, verify that pump is not blocked due to its inacvity: unscrew the plug
located in the middle of the cap and turn it manually using a
screwdriver or another suitable tool.
During the rst ignion of the brand new boiler, it is necessary that burner works for at least
During this me, the fumes of the eventual
residual manufacturing materials are produced, and they could alter the measured values.
Remark: during the rst 10 minutes of electrical power supply, the re-ignion delay is nil.
Remark: the knob
on control panel has the posion " that is used during the regulaon of
the MAX heang power (as described in this Secon) and also during factory test (not described).
For informaon purposes only, we explain that, further to a request of domesc hot water, this posion acvates the gas
boiler at the minimum output set for this funcon.
All boilers are tested and factory set during manufacture; however it is advisable, during the rst start-
ing up, to perform the following checks and, only if necessary, the adjustments that could be necessary.
check the inlet gas pressure and ow (see "Inlet gas check" on page 23);
check the burner pressure at maximum and minimum power input and gas valve adjustment (see
"Max and Min pressure adjustment" on page 23);
adjust the max power output in heang mode (see "Max heang power adjustment" on page 24);
eventual customizaon of the electronic sengs to adapt the boiler work to parcular system
requirements (see "Electronic sengs" on page 26).
Access to the inside of the boiler
Unscrew the screws 1 and remove the lower grid 2, if any;
Remark: Lower grid is spare inside packing, not assembled.
Push the casing 3 upwards and remove it;
unscrew the two screws 4 and overturn downwards the control panel 5;
aer the regulaons, close the boiler repeang everything in the other sense, carefully hooking the
casing 3 to the tongues 6.
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