- MANUAL HTi
70
6 & 8 KW HEAT PUMPS -
14
6 - MAINTENANCE AND
TROUBLESHOOTING
•In order to ensure the best performance
results from your HTi
70
Heat pump it
should be subject to regular maintenance.
•An annual maintenance check is recommended
to be carried out by a qualifi ed professional on
the hydraulic heating circuit.
•All work carried out on the refrigerant circuit
must be done by a qualifi ed professional with a
category 1 certifi cate of aptitude.
•Always switch the appliance off before opening it.
6.1 - General information
After the appliance has been operating for a few days, it is
advised to check that the water circuit is properly sealed, and that
condensates are draining properly.
Note: In case of maintenance work or decommissioning of an
appliance, please respect all environmental protection
instructions concerning recovery, recycling, and
disposal of consumables and components.
In case of repair work on the HTi
70
Heat pump, the refrigerant
circuit, or the electrical box, it is important to follow the following
instructions:
6.2 - Maintenance on the hydraulic circuit
Inspection of the water circuit consists of removing sludge,
checking the lters, and stopping up any leaks that may have
appeared. Clean or replace clogged or dirty lters.
From time to time check that the condensates are draining
properly.
The HTi
70
Heat pump contains R290 refrigerant fl uid. It is not
subject to regulations concerning greenhouse gasses, and does
not necessitate mandatory annual maintenance by a quali ed
professional.
However, it is still recommended to carry out periodic (at least
once per year) cleaning of the evaporator ns if it is obstructed by
dust or leaves: this should be done using a vacuum cleaner or by
spraying with water.
Never clean the fi nned heat exchanger
with high-pressure cleaning equipment
as it could damage the fi ns.
6.3 - Maintenance of the Heat pump
• Always disconnect the appliance from
the power supply before accessing the
electrical terminals.
• Do not get water on any of the electrical
components.
6.4 - Maintenance of the electrical
components
• Check on both the HTi
70
Heat pump and the HTi
70
Pilot that the
electrical supply cables are properly connected to the terminals.
• Check the electrical connections for oxidization or overheated
sections.
• Check the tightness of the cables on the compressor starters.
• Clean any dust from the electrical box and check the
connections.
• Check that the ground cable is properly connected.
Any work on the refrigerant circuit must be undertaken by a
quali ed professional with a category 1 certi cate of aptitude. 1.
It is forbidden to release gas from the refrigerant circuit into the
atmosphere, and it is obligatory to recover the refrigerant before
undertaking any work on the circuit.
The HTi
70
Heat pump uses R290 refrigerant fl uid. Given the
fl ammable nature of this fl uid, any work on the refrigerant circuit
must be carried out using suitable equipment which complies with
the current rules and regulations in eff ect.
When handling the fl uid (recovery, draining, or refi lling), the
appliance must be disconnected from the power supply. Do not
smoke. Do not generate any fl ame (lighter, blowtorch) while
handing the fl uid. If work is necessary on the refrigerant circuit
using a fl ame (blowtorch), the refrigerant circuit must be emptied
and replaced with nitrogen.
Consulation of the meters can be done from the hydrualic pilot’s
display screen (refer to the Pilot’s user maual).
6.5 - Consulting the meters
Keep in mind that there may be some
refrigerant fl uid remaining in certain
parts of the circuit after it has been emptied and
replaced with nitrogen. (Creation of a fl ame is
possible).
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