INSP & MAINT
85
Installation and Maintenance
Section 6 - Inspection and Maintenance
ᘐ WARNING: All maintenance and servicing tasks must
be carried out by a competent and suciently qualied
engineer.
The product contains the hydrocarbon refrigerant R290
which is very ammable. The refrigerant may mix with
air to form a ammable atmosphere increasing the risk
of re and/or explosion. Work that requires the removal
of the exterior casing of the Heat Pump must only be
carried out by competent persons who are familiar with
the risks of R290 refrigerant. Work on the refrigeration
circuit must only be carried out by a Cat I or Cat II F-gas
6.1 NORMAL OPERATION FEATURES
6.1.1 Crankcase Heater
If the outdoor temperature is less than 8°C and the
crankcase heater is switched on.
6.1.2 Primary Circulation Pump
If the outdoor unit is in standby, the primary circulation
pump will activate as part of the antifreeze protection
system.
6.1.3 Compressor Anti-cycle
prevents it switching back on for a minimum of 5 minutes.
6.1.4 Flow Temperature Control
target temperature, calculated from the outside
temperature, by modulating the compressor and the fan.
6.2 OVERALL MAINTENANCE PLAN TABLE
ⓘ IMPORTANT: Ideally, maintenance activities should
be scheduled during times where there is little heating
demand to avoid disruption to the end user.
maintenance listed in Table 22 should be conducted annually.
Maintenance Task Frequency
Heat Pump Inspection & Maintenance
1 year
DHW Cylinder Inspection & Maintenance
1 year
Control Box Inspection & Maintenance
1 year
System Inspection & Maintenance
1 year
Water Quality Treatment
1 year
Table 22 Maintenance Tasks
certied engineer with a City and Guilds 6187-21 certicate
or equivalent. Work done on the heat pump should be done
in accordance with industry standard safety procedures and
practices for working with hydrocarbons.
Work on electrical systems must only be carried out by
competent persons.
Refrigerant should never be released into the atmosphere.
Refrigerant is to always be collected and recycled using a
suitable recycling unit.
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