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Commissioning
The inhibitor or combined inhibitor/anti-freeze must not cause damage
to the materials within the appliance (plastic, rubbers, mild steel,
stainless steel, copper and brass) and any other materials/components
within the system.
▶ Record the date when the inhibitor was added to the system on the
guarantee card.
▶ The concentration level of inhibitor in the system should be checked
every 12 months or sooner if system content is lost.
The addition of sealing agents to the system water is not permitted as
this can cause problems with deposits left in the heat exchanger.
6.2.1
Filling the appliance and adding Inhibitor
Before pressurising the system.
The appliance integral expansion vessel is pre-charged to 0.75 bar
(equal to a static head of 7.5m (24.6ft)). A Schrader type valve is fitted
to the expansion vessel to allow for pressure adjustment if required.
▶ If an extra expansion vessel is fitted to the central heating system,
ensure that it is set to the same pressure as the appliance internal
expansion vessel, refer to separate instructions supplied with the
extra expansion vessel.
Filling the system - Sealed systems
▶ Check that the drain cocks and manual air vents are closed and all
radiator valves are open.
▶ Add a suitable inhibitor or combined inhibitor/anti-freeze, if the
system might be exposed to freezing conditions, to the heating
system water in accordance with the manufacturers instructions.
Filling the system
▶ When initially filling the appliance, before power is applied, use the
pressure gauge to set the system pressure.
▶ Once the appliance electrical pre commissioning is complete and the
appliance is switched on, refer to the digital pressure display on the
appliance.
▶ Turn on the water main and open the system valves.
▶ Fill the system to between 1.3 and 1.7 bar via a WRAS approved
filling loop.
▶ The Automatic Air Vent will release any air trapped in the appliance.
▶ Manually vent all radiators, tighten the vent screws when completed
▶ Check the system for any leaks and correct if required.
▶ Top up the system pressure if the pressure has dropped below 1 bar.
▶ Isolate and remove the filling loop connections to the system.
The analogue pressure gauge within the appliance is for indication
purposes only, and is intended to assist when initially filling the system.
▶ Pressure shown on this gauge should not be compared to readings
shown on the digital display as they will differ, especially when the
circulation pump is running.
▶ Final adjustments to system pressure must be made whilst referring
to the digital pressure display.
42
system pressure [bar]
1,1
1,0
0,9
0,8
0,7
0,6
Table 22
Adjusting the operating pressure of the heating system
Display on the pressure gauge
1 bar
Minimum charge pressure (when system is cold)
1 - 1.5 bar
Optimal charge pressure
2,8 bar
Maximum charge pressure at maximum heating
water temperature must not be exceeded (pressure
relief valve opens).
Table 23
If the indicator is below 1 bar when the system is cold:
▶ Top up the water until the indicator is between 1 bar and 1.5 bar
again.
If pressure is not being maintained:
▶ Check tightness of expansion vessel and heating system.
6.3
Starting the appliance
NOTICE
Damage to appliance or system!
Running the appliance:
▶ Never run the appliance when the appliance/system is empty or
partially filled.
6.3.1
Control panel overview
1
2
3
4
Fig. 63
[1]
Display
( Heating mode on/off, set the maximum flow temperature
[2]
* Hot water mode, adjusting the hot water temperature (press
[3]
the button 3s for eco mode)
[4]
Chimney sweep mode
[5]
Save settings
[6]
Return/back
: To navigate through menus and decrease settings
[7]
: To navigate through menus and increase settings
[8]
Greenstar 1000 – 6721835943 (2023/08)
CH Flow Temperature [ °C]
86
79
72
64
57
50
5
6
7
8
0010042718-001
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