Specifications

SARIgas Zoom Z – ZF Page 18
Rev.0
START UP
WARNINGS BEFORE STARTING UP
Important:
- Before filling the system, check that the pump is not blocked.
- If the pump is blocked, remove the protective cap and use a screwdriver to rotate the pump rotor pin to the right
and left (Fig. 23/A).
- With the gas valve closed, check that the metre does not record the passage of gas for at least 10 minutes.
- Check that all the bleed valves on the system are open.
- Open the filling valve (Fig. 23/B) until the pressure given on the pressure gauge F, Fig. 1, indicates at least 1 bar
(14.22 P.S.I .).
- Close all the bleed valves in the system as soon as water starts to come out.
- At the end, close the filling valve when the pressure given on the pressure gauge is above 1.2 bar (max.1.5 bar)
17 P.S.I . (max..21.33 P.S.I. ): knob A Fig. 1, must be in position "O" to carry out this operation.
- Any future bleeding should be done with knob A in position "O".
Bleeding the boiler
Before filling the system with water, loosen the plastic cap of the automatic bleeding valve to remove the air
contained inside the boiler and heat exchanger.
Do not force manually the automatic valve outlet, as the water that comes out deposits micro particles of dirt on the
housing of the seal, and therefore dripping is unavoidable.
When the boiler is working, the bleeding valve cap must always be loose.
BEFORE STARTING UP THE BOILER
Carry out the following sequence, referring to figures 1-23:
1) If the gas valve is fitted to the boiler, turn it off.
2) Open the inlet cold water valve (if fitted).
3) Correctly fill the central heating system with water (see Fig. 23/B) and check that the pressure gauge (F fig. 1)
gives a pressure of at least 1.2 bar (17 P.S.I.). No water must flow out from the safety valve evacuation hole (fig. 8,
ref. 6).
4) Carry out the wiring connections to the boiler to 230  Volt - 50 Hz, according to the wiring diagrams on page 19,
Fig. 25. Wiring schould be in 3 core PVC cable not less than 0,75 mm to BS 6500 table 16, wiring external to the
boiler must be in accordance with the current I.E.E. wiring regulations and any local regulations which apply
5) Before opening the gas valve tap, the pump must be turned for a few minutes, by turning knob A to "I" and
knob B to WINTER , after about ten minutes open the gas valve tap, press button E Fig. 1, to start up the cycle.
Zoom
Fig. 23/A Fig. 23/B