ROC COMBI HE 2802 - Checks Before Operation

30
If the gas supply serves other appliances,
ensure that an adequate supply is available
both to the boiler and the other appliances
when they are in use at the same time.
Pipe work must be of an adequate size. The
nal pipes size must not be smaller than the
appliance inlet size.
Open the gas cock (supplied with the
connection kit) to the appliance and check the
gas connection on the appliance for leaks.
Water Treatment
The boiler is equipped with a stainless steel
heat exchanger.
The detailed recommendations for water
treatment are given in BS 7593:2006: the
following notes are given for general guidance;
If the boiler is installed on an existing system,
any unsuitable additives must be removed;
Under no circumstances should the boiler be
red before the system has been thoroughly
ushed; the ushing procedure must be in line
with BS 7593:2006.
Firstly fill the central heating system with
the power off, and flush through cold, fill
the central heating system again, adding
a flushing detergent, run the boiler on
central heating until it reaches its operating
temperature and flush the system, refill the
system with a suitable corrosion inhibitor.
Please check the following steps before turn
on the gas boiler:
●
Technical data on the data plate must
match the supply of electricity, water, and gas
supply.
●
Flue pipes should be unobstructed and
installed as instructed.
●
Ensure the minimum space for maintenance
when there is furniture, walls or other
obstacles surrounds.
Make sure all the heating system pipes and
DHW pipes connecting to the boiler have been
cleaned carefully.
●
Check the gas pipe line and water pipe
connection to see if there is any leakage.
Note:
Strictly prohibit children and people who do
not know how to operate the gas boiler.
Please read “manual for installation and
maintenance” and “user’s guide for domestic
gas boiler” carefully before using. If you have
any queries, please contact the after-service
department.
Opening the valves
●
Make sure the cold water inlet valve has
already been opened. This can be tested by
turn on the tap of D.H.W. until there is water
owing out.
●
Conrm the heating return water valve and
valve on the gas pipe are all opened.
●
The safety valve is only for safety purpose,
you should not touch it.
Test the pressure of system
Test the pressure of system on the pressure
gauge. The pointer on the gauge should be
between 1.0-1.2bar. If the pointer stayed
below 1.0 bar when the appliance is cooled,
please add water to the system, see “adding
water to appliance”
Checks before operation
The installer/engineer will instruct you on how
to use the appliance when commissioning the
boiler or service for the rst time.
Precautions before operation
The first ignition must be performed by the
installer/engineer.