17
Maintenance 3
• The dwelling station was leak tested and
䡺
the electric components were checked
for firm seating and integrity
• The strainers were cleaned
䡺
• The station was bled
䡺
• The faultless operation of the ball valves was checked
䡺
• All isolating valves are open
䡺
• Closing function check of the PM controller:
䡺
– The heat exchanger has to cool down after
drawing off
• Flow temperature:
• Setting of the central pump was checked
䡺
• Set hot water temperature:
(Thermostat setting:
)
• Cold water pressure:
• Differential pressure station:
(Handwheel setting:
)
• Set
heating water temperature:
(Thermostat setting:
)
(only variable temperature circuit)
• Heat meter check
䡺
• Read-out values according to heat meter:
Temperature:
Flow rate:
• Proper function of the system
䡺
(e.g. temperatures, flow rates)
was checked by drawing off water
• Safety valve checked
䡺
(only HTU Duo with heating circuit
separation system)
• The following has to be documented when
replacing system components:
– Component:
– Reason for replacement:
Date:
Name:
Date/ Signature installer
Maintenance 4
• The dwelling station was leak tested and
䡺
the electric components were checked
for firm seating and integrity
• The strainers were cleaned
䡺
• The station was bled
䡺
• The faultless operation of the ball valves was checked
䡺
• All isolating valves are open
䡺
• Closing function check of the PM controller:
䡺
– The heat exchanger has to cool down after
drawing off
• Flow temperature:
• Setting of the central pump was checked
䡺
• Set hot water temperature:
(Thermostat setting:
)
• Cold water pressure:
• Differential pressure station:
(Handwheel setting:
)
• Set
heating water temperature:
(Thermostat setting:
)
(only variable temperature circuit)
• Heat meter check
䡺
• Read-out values according to heat meter:
Temperature:
Flow rate:
• Proper function of the system
䡺
(e.g. temperatures, flow rates)
was checked by drawing off water
• Safety valve checked
䡺
(only HTU Duo with heating circuit
separation system)
• The following has to be documented when
replacing system components:
– Component:
– Reason for replacement:
Date:
Name:
Date/ Signature installer
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