9
- regular maintenance and prevention.
It is recommended that a system log be kept containing the relevant maintenance data.
Damage that may occur due to a malfunctioning system
Component failures (e.str., pumps, valves)
Internal and external leaks (e.str., from heat exchangers)
Reduction in cross-section and flow blockage (e.str., heat exchanger, pipes, pumps can
become clogged due to limescale or corrosion)
Faster wear
Gas cushion formation (cavitation)
Adverse effects due to heat transfer (coatings, sedimentation) and associated noise
(e.str., roaring, flow noise)
THERMAL INSULATION
All heat and cold conductive parts of the piping must be insulated with special means of thermal
insulation in accordance with current standards. The main normative document, which defines the
requirements for thermal insulation, is Order No 1-245 of the Minister of Energy of the Republic of
Lithuania “ON THE APPROVAL OF RULES FOR INSTALLATION OF THERMAL INSULATION OF
EQUIPMENT AND HEAT TRANSMISSION NETWORKS” of 20 September 2017.
ELECTRICAL CONNECTION WORKS
DANGER!
Risk of electric shock! Always disconnect the device from the power supply prior to work on
the electrical system parts.
Remove the top cover of the heat pump by unscrewing the screws on the top of the device.
Connect the power cable to the marked heat pump relay terminals 1, 3, 5, respectively L1, L2, L3
(see, Section: “Heat pump electrical connection diagram”) and connect N and PE conductors to the
marked electrical connection diagram contacts, respectively.
