Ferroli OMNIA HYBRID C, Installation, Maintenance And User Manual

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89
EN
Cod. 3541T090 - Rev. 00 - 06/2019
MAINTENANCE
15.3 Access to internal components
To access the internal components after having dismantled the front panel (details 1 and 2 fig. 179) it is necessary to rotate the assembly of the heat pump electric
panel and expansion vessel (detail 3 fig. 179).
2
1
3
fig. 179 - access to internal components
15.4 Water load and system water pressure adjustment
The filling pressure read on the boiler water gauge (detail 2 - fig. 180) with sy-
stem cold must be approx 1.0 bar. If the system pressure falls below minimum
values, the boiler stops and fault F37 is displayed. Pull out the filling knob (detail
1 - fig. 180) and turn it anticlockwise to return it to the initial value. Always close
it afterwards.
Once the system pressure is restored, the boiler will activate the 300-second air
venting cycle indicated on the display by Fh.
To prevent boiler shutdown, it is advisable to periodically check the pressure on
the gauge with system cold. In case of a pressure below 0.8 bar, it is advisable
to restore it.
A
1
2
B
1
fig. 180 - Filling knob
15.5 System draining
The drain faucet ring nut is located under the safety valve inside the boiler.
To drain the system, turn the ring (ref. 1 - fig. 181) counter-clockwise to open the
faucet. Do not use any tools; use hands only.
To drain only the water in the indoor unit, first close the shut-off valves between the
system and indoor unit before turning the ring.
fig. 181 - Safety valve with drain faucet
15.6 Heat pump routine maintenance
The inspections described below, to which the unit must be subjected, do not require specific technical know-how. They merely include a few simple inspections involving certain parts
of the unit. The table below gives a recommended list of inspections which should be carried out at the indicated intervals. Provide controls and interventions more frequently in case
of heavy (continuous or intermittent high, close to operating limits, etc ...) or critical (essential service such as data centres, hospital etc ...) use.
Maintenance Frequency
Visual inspection of the unit
Annual
Inspection of hydraulic circuit
Annual
Inspection of electrical system
Annual
Inspection of condensing and fans system
Annual
Heat pump - Inspection of the water heat exchanger
Annual
Inspection of the water filter
Annual
Heat pump - Inspection of the water pumps (if present)
Annual
• Visual inspection of the structure of the unit
When checking the condition of the parts that form the structure of the unit, pay particular attention to the parts liable to rust.
If traces of rust are noted, they must be treated with rust-inhibitor paint in order to eliminate or reduce the problem.
Check to make sure that the external panels of the unit are well fixed.