Danfoss Termix VVX-I, Installation Manual, Page: 16 / 24

Installation Guide Termix VVX-I
6.4 Extras
6.4.1 Circulation pipe
The circulation pipe set is mounted directly on the controller.
The set includes circulation pipe, single check valve and fitting.
When mounting the hot water circulation directly on the controller
the hot water circulation temperature will be equal to the idle
temperature. The idle temperature is a few degrees lower than the
set domestic hot water temperature.
6.5 Maintenance
The substation requires little monitoring, apart from routine
checks. It is recommended to read the energy meter at regular
intervals, and to write down the meter readings.
Regular inspections of the substation according to this Instruction
are recommended, which should include:
Strainers
Cleaning of strainers.
Meters
Checking of all operating parameters such as meter readings.
Temperatures
Checking of all temperatures, such as DH supply temperature and
DHW temperature.
Connections
Checking all connections for leakages.
Safety valves
The operation of the safety valves should be checked by turning
the valve head in the indicated direction.
Venting
Checking that the system is thoroughly vented.
Inspections should be carried out minimum every two years.
Spare parts can be ordered from Danfoss. Please ensure that any
enquiry includes the substation serial number.
Authorized personnel only
Assembly, start-up and maintenance work must be performed by
qualified and authorized personnel only.
16 DEN-GT VI.EH.G3.02 / LUK40440
Danfoss District Energy