- 61 -
on the side where the glass is.
5.2. Cleaning the double glazing
If the fireplace insert is fitted with double glazing, cleaning may be carried
out by the operator only on the combustion chamber side and on the side
facing the room in which it is installed, as indicated in the operating
manual. If the internal panes within the glazing vacuum are dirty, cleaning
may only be carried out by customer service or a trained specialist
company.
5.3 Maintenance of the heat exchanger
The hydraulic pressure of the heating system must be checked at regular
intervals during the heating season. The H
2
O fireplace insert may only be
operated when completely filled and bled.
A heating inspection of all the safety devices (overheat discharge valve,
safety valve, etc.) and the other components must be carried out annually
before the heating season. The notes in the installation and operating
manuals of the respective component manufacturers must be adhered to.
This check may only be carried out by a specialist company which is able
to ensure proper functionality of the individual components. We recom-
mend that you sign a service contract with your specialist company. The
annual safety test (e.g. functional testing of the overheat discharge valve,
the pump thermostat, safety valve, expansion vessel, etc.) should be
carried out before the heating season. On performing the annual safety
checks, your specialist company must document them in the commission-
ing log. In the event of a claim, evidence of the maintenance work carried
out must be submitted to the service personnel.
- 62 -
6. Troubleshooting
Note: The fireplace must not be used as a waste incinerator. Furthermore
it is intended for non-continuous use. Nor can continuous combustion be
achieved by extracting combustion air – attempting to do this is not
permitted.
You can remedy the following problems yourself:
Description of problem
Solution
Overheat discharge valve
keeps cutting in (constant
water outflow through the
outlet). The water heat
exchanger cannot
discharge heat to the
heating system.
The buffer storage tank is “full”.
Extract heat from storage tank
Check operation and setting of the
pump thermostat and load unit
Set pump one increment higher
(greater flow rate).
Circulating pump not running. Pump
or power connection defective?
Return temperature too high,
< 70°C.
Check whether shutoff devices are
stuck.
Sufficient heating water present?
Overheat discharge valve
dripping.
Contamination of the overheat
discharge valve.
Flush the overheat discharge valve
by pressing the red cap on the fit-
ting.
Inspect the seat of the connection
seals and pistons (see manufactur-
er’s manual).
Where necessary, fit filters to the
system upstream of the safety de-
vice (make sure minimum flow is
maintained)
Gurgling noises, boiling
noises in the water-carrying
parts of the H
2
O cell (air in
the system)
Check system pressure
Bleed the system at the bleed valve.
In the case of newly filled or topped
up systems it will take some time for
all the air to escape. A single bleed
operation is often not sufficient.
Summary of Contents for Mini Z1 H2O
Page 5: ...9 Mini Z1 H2O Fig 1a 10 Mini Z1 H2O XL Fig 1b...
Page 6: ...11 Mini Z1h H2O XL Fig 1c 12 Varia 1V H2O Fig 1d...
Page 7: ...13 Varia 1Vh H2O Fig 1e 14 Varia 1V H2O XL Fig 1f...
Page 8: ...15 Varia 1Vh H2O XL Fig 1g 16 Varia 1V H2O XXL Fig 1h...
Page 9: ...17 Varia 1Vh H2O XXL Fig 1i 18 Varia 2Lh 2Rh H2O Fig 1j...
