Trianco TRISTAR OPTIMA JUNIOR K CB, Руководство по установке, Страница: 13 / 44

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To fill the system once the pipework has been
connected, first gain access to the inside of the boiler
(see
section 4 , page 16 ) and open the cap on the
automatic air valve ( item 23 , page 10 ). Gradually
open the filling loop valves located on the underside
of the boiler. Once at desired pressure, close the
filling loop and open the manual air valve (
item 2 ,
page 10 ) to vent the system when full. When
complete, close the manual air valve ( fig 7 ).
All system filling must be done in accordance with
recommended WRAS guidelines.
Automatic Air Valve
Manual Air Valve
The boiler operates between working pressures of
1-1.5 bar. This can be checked on the pressure
gauge located on the front control panel. Once all the
air has been vented from the system, close the
manual and automatic air valves. Once the desired
pressure has been reached, close the filling valves.
Before initial firing of the boiler, ensure that the pump
has not become blocked by carrying out the following
operation:
1) Remove screw ‘A’ ( fig 8 ).
2) Turn the rotator knob, taking care not to apply
excessive force.
3) Replace screw ‘A’.
Check that the circulator is operating correctly, and if
necessary, bleed of air by turning screw ‘A’ anti-
clockwise. Tighten once complete.
Important: Before proceeding, always ensure that
the water within the pump is not boiling.
Also take care not to damage any other
components with water which may
escape during this process.
The pump is factory-set at setting III . In most
circumstances this is the best setting to achieve
optimum boiler performance and will not require
adjustment. We recommend that this is not altered
unless strictly necessary.
To change the pump speed, rotate knob ‘ S ’ (see
below) into the required position ( I , II , III ).
The householder should be informed that the system
pressure should be checked periodically via the
gauge on the front face of the control panel.
To recalibrate the system pressure, slowly open the
filling valves on the underside of the appliance. When
the desired pressure has been reached, close the
valve.
(continued overleaf)
3.4 FILLING THE SYSTEM 3.5 CIRCULATING PUMP
3.6SYSTEM PRESSURE CHECKS
FIG. 6
FIG. 8
A
FIG. 7