Maintenance - Danfoss Termix VMTD-F-B Instructions Manual

Instructions

Maintenance

8
Termix VMTD-F-B - substation for direct HE and DHW
Each substation requires little monitoring, apart
from routine checks and cleaning of strainers.
Regular inspections of the substation according to
this Instruction are recommended, which should
include checks of all operating parameters such
as meter readings.
VI.CW.C1.02 / LUK40110
© Danfoss 04/2011
Safety valve
The purpose of the safety valve is to protect the
substation from excessive pressure.
The blow-off pipe from the safety valve must not be
closed. The blow-off pipe outlet should be placed so
that it discharges freely and it is possible to observe
any dripping from the safety valve.
It is recommended to check the operation of safety
valves at intervals of 6 months. This is done by
turning the valve head in direction indicated.
Strainer
Strainers should be cleaned regularly by authorized
personnel. The frequency of cleaning would depend
on operating conditions and the manufacturer's
instructions.
GTU Pressure Equalizer
The GTU Pressure Equalizer absorbs the expansion
on the secondary side of the Termix water heaters
and can be used as a substitute to the safety
valve.
Furthermore the pressure equalizer absorbs a
possible increase in pressure, so a discharge outlet
is omitted.
The GTU Pressure Equalizer may not be applied in
systems with hot water circulation.
Return temperature limiter
FJVR (10-80 °C)
The return limiter type FJVR automatically controls
the return temperature from radiators, convectors
and floor heating pipes.
Spare parts can be ordered from Danfoss. Please
ensure that any enquiry includes the substation
serial number.
DEN-GT