30
Installation and maintenance instructions ecoTEC exclusive 0020193968_05
1.
Check whether all thermostatic radiator valves and
both service valves on the product are open.
2.
Connect a hose to the drain valve that is located at the
lowest position in the heating system.
3.
Open the radiator valves and the drain valves so that
the water can drain quickly. Start at the next point in
the installation and open the purging valves on the ra-
diators so that the contaminated water can completely
drain.
4.
Close the draining cocks.
5.
Refill the heating system with water.
6.
Check that the expansion relief valve of the heating
system is functioning correctly by turning the handle on
the valve.
7.
Check the pressure in the heating system and top up
with water if necessary.
8.
Close the filling valve and the cold water tap.
9.13
Purging the heating installation
1.
Select the check programme
P.00
.
◁
The product does not start up, the internal pump
operates intermittently and purges either the heat-
ing circuit or the hot water circuit.
◁
The display shows the filling pressure of the heat-
ing installation.
2.
Make sure that the filling pressure of the heating install-
ation does not fall below the minimum filling pressure.
– ≥
0.08 MPa (
≥
0.80 bar)
◁
At the end of the filling procedure, the filling pres-
sure of the heating installation should be at least
0.02 MPa (0.2 bar) above the counter-pressure
of the expansion vessel ("Exp") (P
Installation
≥
P
Exp
+
0.02 MPa (0.2 bar)).
3.
If there is still too much air in the heating installation
at the end of the check programme
P.00
, repeat the
check programme.
9.14
Filling and purging the hot water system
1.
Open the cold water stop valve on the product.
2.
Fill the hot water system by opening all the hot water
draw-off valves until water escapes.
9.15
Gas inspection
9.15.1 Checking the air/flue pipe/flue gas
recirculation
1.
Check the flue gas installation is intact in accordance
with the latest gas safe technical bulletin and informa-
tion supplied in the installation instructions.
2.
For extended flue gas installations check for flue gas
recirculation using the air analysis point.
3.
Use a flue gas analyser.
4.
If you discover unusual levels of CO or CO
2
in the
supply air, search for the leak in the flue system or for
signs of flue gas recirculation.
5.
Eliminate the damage properly.
6.
Check again whether the supply air contains any un-
usual levels of CO or CO
2
.
7.
If you cannot eliminate the damage, do not start up the
product.
9.15.2 Checking the gas flow rate
The gas flow rate has been set during production and does
not require adjustment. With the front casing fitted check the
gas flow rate of the boiler as follows:
▶
Start up the product with the check programme
P.01
.
▶
In addition, ensure that maximum heat can be dissipated
into the heating system by turning up the room thermo-
stat.
▶
Wait at least 5 minutes until the boiler has reached its
operating temperature.
▶
Ensure that all other gas appliances in the property are
turned off.
▶
Measure the gas flow rate at the gas meter.
▶
Compare the measured values with the corresponding
values in the table.
Qnw from the data
plate
H gas in m
³
/h
Nom.
+5%
−
10%
15.3
1.62
1.70
1.46
18.4
1.95
2.05
1.76
24.7
2.61
2.74
2.35
25.7
2.72
2.86
2.45
28.6
3.03
3.18
2.73
30.6
3.24
3.40
2.92
35.7
3.78
3.97
3.40
Condition
: Gas flow rate not in the permissible range
▶
Check all of the piping and ensure that the gas flow rates
are correct.
▶
Only put the product into operation once the gas flow
rates have been corrected.
Condition
: Gas flow rate in the permissible range
▶
End the check programme
P.01
.
▶
Allow the boiler to cool down by allowing pump overrun to
operate for a minimum of 2 minutes.
▶
Record the boiler maximum gas flow rate onto the
Benchmark gas boiler commissioning checklist.
9.15.3 Checking the gas flow pressure
1.
Ensure that the gas inlet working pressure can be ob-
tained with all other gas appliances in the property
working.
2.
Close the gas stopcock.
