Using The Secondary Zone Remote Panel (Optional); Restore Central Heating System Pressure; Draining The System; Draining The Domestic Hot Water Circuit - Immergas TRIO PACK HYBRID 4 Instructions And Warnings

2.4 USING THE SECONDARY ZONE
REMOTE PANEL (OPTIONAL).
For general operation of the zone remote panel, see the relative
instruction booklet.
The settings on the remote panel, such as operating mode, flow
setting, humidity setting etc. are synchronised with those on the
main remote panel.
Moreover, the main remote panel is not disabled if there is any
zone remote panel.
2.5 RESTORE CENTRAL HEATING SYSTEM
PRESSURE.
1. Periodically check the system water pressure (the indoor unit's
pressure gauge hand must indicate a value between 1 and 1.2
bar).
2. If the pressure falls below 1 bar (when the system is cold) restore
normal pressure via the relevant cock located to the left of the
manifold, accessible from the main door (refer to the main
components).
3. Close the valve after the operation.
4. If the pressure reaches values around 3 bar, there is a risk of
tripping the safety valve (in this case, remove water from a
radiator air vent valve until a pressure of 1 bar is achieved, or
ask for assistance from professionally qualified personnel).
5. In the event of frequent pressure drops, contact qualified staff
for assistance to eliminate the possible system leakage.
2.6

DRAINING THE SYSTEM.

Make sure that the filling cock is closed.
Open the draining cock (Fig. 36, pos. 8).
Open all the vent valves present.
At the end, close the draining cock.
Close all the previously opened vent valves.
If fluid containing glycol was added to the system
circuit, make sure it is recovered and disposed of in
accordance with standard EN 1717.
2.7 DRAINING THE DOMESTIC HOT
WATER CIRCUIT.
To do this, always close the domestic cold water inlet upstream
of the appliance.
Open any domestic hot water tap to discharge the pressure from
the circuit.
Then open the storage tank unit draining cock (Fig. 36, pos. 1)
and loosen the storage tank hot water outlet fitting to facilitate
water drain.
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2.8

DECOMMISSIONING.

In the event of permanent system shutdown, contact professional
staff for the procedures and ensure that the electrical, water supply
lines are previously shut off and disconnected and that the solar
collector (if present) is covered.