Cold water
Hot water
FILLING THE SYSTEM
Put the DHW tank under pressure
before
pressurizing the heating (primary) circuit.
Set-up conditions
•
External power supply isolated
DHW circuit fi lling procedure
1.
Open the isolating valves (
1
) and the draw-
off tap (
2
).
2.
Once the water flow rate has stabilized and
the air is totally evacuated from the system,
close the draw-off tap (
2
).
3.
Check all the connections for leaks.
Heating circuit fi lling procedure
1.
Open boiler front panel (refer to
applicable procedure in the manual).
2.
Open the isolating valves (
1
).
3.
Make sure that the drain valve (
3
) is
tightly closed.
4.
Open the fi lling valve (
2
).
5.
Once the system is bled from air,
bring the pressure to the static
pressure between 1.5 bar and 2 bar.
6.
Close the fi lling valve (
2
).
7.
Disconnect fi lling device from water
supply.*
Follow-on tasks
1.
Check there is no leak.
* UK specifi c reference G24.1 & G24.2 of the Water Regulations Guide.
1
1
2
3
1
2
1
Primary circuit filling procedure
1.
Make sure that the drain valve (
2
) is tightly closed.
2.
Open the isolating/filling valve (
1
).
3.
Once the system is bled from air, bring the
pressure to the static pressure between 1.5
bar and 2 bar.
4.
Close the isolating/filling valve (
1
).
5.
Disconnect filling device from water
supply.*
Follow-on tasks
1.
Check there is no leak.
2
1
SAFETY INSTRUCTIONS FOR STARTING UP
Essential recommendations for safety
•
The components inside the control panel may only be accessed by an approved
installer.
•
Set the water temperature in accordance with usage and local plumbing codes.
•
Make sure that the heating circuit filling valve is closed once the starting up
process is complete.
•
If there is a drain assembly, make sure that the condensate drain assembly is filled
with water before starting up the boiler. Fill with water as necessary.
•
Make sure that all connections are made and tight.
General remark
•
In normal operation, the burner starts automatically as soon as the boiler
temperature drops below the preset temperature.
GAS
pressure
(mbar)
EN
FR
NL
ES
IT
DE
PL
RU
en
41
WaterMaster 25 - 35 - 45 - 70 - 85 - 120 : A1006482 - 664Y7300 • D
STARTING UP
CHECKS BEFORE STARTING UP
Essential recommendation for safety
•
Check the tightness of the flue pipe connections.
Essential recommendation for the correct operation of the appliance
•
Control the tightness of the hydraulic circuit connections.
TOOLS REQUIRED FOR STARTING UP
The drain valve is located underneath and
the front cover of the base needs to be
removed to get access to it.
