ESP HT 12 KW, Инструкция по установке и эксплуатации, Страница: 27 / 52

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PASRW030B-D-PS
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often as once per month. Maintaining the evaporator will keep heat
exchanging efficiently and will save you money. Do not power-wash
the evaporator.

Make regular checks of the system pressure. If the pressure drops
significantly make sure the fault is diagnosed quickly and repaired
accordingly – it is possible that the system has a leak and this must be
found and repaired.

If the pump is to be unused for any protracted period, it is important
to drain down the unit. When fitting the unit, install a full flow lever
valve on both the flow and return pipes so that the unit may be
isolated from the rest of the system and drained down easily, without
losing all water and glycol from the system. A water recharge and
inspection will be necessary before restarting the unit.

The unit and the water distribution system must be protected in the
winter to avoid freezing – this means using glycol in the system and
ensuring that water pipes are properly lagged with waterproof high
grade lagging with a wall thickness of at least 30mm. See further
notes below - these points must be observed to avoid the warranty
being invalidated:
a. Do not shut of the power supply to the heat pump in the
winter, when the air temperature is below 0°C. If the inlet water
temperature is above 2°C and below 4°C, the water pump will
automatically start to prevent the system from freezing. If the inlet
water temperature is below 2°C the system will automatically heat
the water to 2°C+.
b.
Use anti-freeze (Glycol water) Follow the guidelines below to
ensure you have the correct amount of anti-freeze in system: