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Installation instructions
ENGLISH
Commissioning must be done by professionally
qualied personnel. Unical will not be held liable
for damage to persons, animals or objects, due to
failure to comply with the aforesaid instructions.
Before commissioning the boiler, check the following:
3.11 - COMMISSIONING
does the installation meet the specic standards and regulations in force, both relating to the
gas part as well as the electrical part?
do the combustion air intake and ue gas exhaust take place properly according to
what is dened by the specic rules and regulations in force?
is the fuel supply system sized according to the capacity required by the
boiler? Is it equipped with all safety and control devices required by the standards in force?
is the power supply of the boiler 230V - 50Hz?
has the system been lled with water (approximately 0.8/1 bar pressure on the pressure gauge with the pump stopped)?
Has the condensation drain trap been lled with water as indicated in chapter 3.8?
are any system shut-o gate valves open?
does the gas to be used correspond to the boiler calibration gas?: otherwise, perform
the boiler conversion in order to use the gas available;
this operation must be carried out by technical sta qualied in compliance with the standards in force;
is the gas supply valve open?
has the system been checked for gas leaks?
is the outside main switch ON?
is the system safety valve ecient and is it connected to the drains?
is the condensation drain trap connected to the drains?
has the system been checked for water leaks?
are the ventilation conditions and minimum distances to perform any maintenance
ensured?
have the GAS, HEATING and DOMESTIC HOT WATER pipes been cleaned thoroughly with products suitable for
each circuit?
has a surveillance and protection system against gas leaks been installed? (Optional)
are the system pipes NOT used as the electrical system earthing?
has the system been sized properly bearing in mind the radiator pressure drops,
thermostatic valves, radiator stop valves?
has the operator been trained and has the documentation been supplied?
Please tick the completed operations
Switching boiler on and o
To switch the boiler on and o, see the Uy reg-
ulator manual
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