72
Checking the refrigerant circuit for leaks
Check the floor area, valves and all visi-
ble solder joints for traces of oil.
Note
Traces of oil indicate a leak in the refrig-
erant circuit. Have your heat pump
checked over by a refrigeration engi-
neer.
Filling and venting the primary side
!
Please note
Avoid appliance damage.
Charge the primary circuit before
connecting the power supply.
1.
Check the pre-charge pressure of the
expansion vessel.
2.
Charge the primary circuit with
Viessmann heat transfer medium
and vent.
Note
Ensure frost protection down to
–19 °C.
Viessmann heat transfer medium is a
ready-mixed ethylene glycol-based
medium. It contains inhibitors for cor-
rosion protection. The heat transfer
medium can be used at temperatures
down to –19 °C.
3.
Check the connections for possible
leaks. Replace faulty or displaced
gaskets.
Filling and venting the secondary side
Unsuitable fill and top-up water increa-
ses the level of deposits and corrosion.
This can lead to system damage.
Observe VDI 2035 regarding quality and
amount of heating water, including fill
and top-up water.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5546 273 GB
Содержание BW 351.A07
Страница 28: ...28 Removing the top panel 1 Installation sequence Siting the heat pump cont 5546 273 GB ...
Страница 88: ...88 Opening the casing door Troubleshooting Repairs cont 5546 273 GB ...
Страница 90: ...90 D C Q R S V K X P F J U T X Q S T R D Y W Type BWC 351 A07 Troubleshooting Repairs cont 5546 273 GB ...