Safety Valve, Contra Valve - The User; Scalding Safety; Cooling Circuit; Functioning Of Cooling Circuit - SWISSTHERM VT167 OHE Bedienungs Und Installationsanleitung Handbuch

SAFETY VALVE, CONTRA VALVE – The user:
W
ith the hot water tank installed the installer has mounted a safety valve. This valve is mounted to ensure the tank
against excessive pressure when the water by heating greatly expands. Since the contra valve that is mounted on the
cold water inlet (from waterworks), prevents water from flowing this way by pressure increase. It is therefore
necessary that the safety valve opens to let this pressure and excess water to escape since the container otherwise will
burst. There should not be anything wrong with the safety valve if it leaks, as this is a sign that it is effective. The
user is responsible for the safety valve is working, and should be checked 4-5 times a year. This is done by pressing
the spring loaded arm on the valve and then you can see and hear if water runs out, and thereby see that the valve is
working. Damage caused by a blocked safety valve is not covered by your warranty.

SCALDING SAFETY:

Under normal operation there will not be able to occur scalding hazard.
When operating with electric heating rod there will under normal operating
conditions not arise scalding hazard. Scalding hazard arises in the moment
when there is a failure of the thermostat built into the electric heating
element which warming continues to approx. 95° C - 98°C before the safety
thermostat disengage. To avoid scalding hazard you can build in a
thermostatic mixing valve on the hot water line from the hot water tank so
that there is a central mix in the hot water. The water temperature will
usually not be higher than 65°C with these valves installed.
Examples here include TA - MIX A thermostatic mixing valve 22 mm
which can be set between 35°C and 65°C. Incorporation of thermostatic
mixing valve is supplied by the manufacturer's instructions.

COOLING CIRCUIT

FUNCTIONING OF COOLING CIRCUIT:

956052
Refrigerant vapours are compressed in the compressor (5) from low
pressure (6 bar) to high pres-sure (18 bar), and sent into the D-tube
condenser (7), coiled round the hot-water tank, which is colder than the
refrigerant vapours. A condensation of the refrigerant vapours takes place
and the water in the tank is heated. The refrigerant is now a liquid and
passes through the dry filter (8), which will absorb and detain residual
moisture from the refrigerant, if any. In the heat exchanger (4) a further
transfer of heat is possible. The purpose of the expansion valve (3) is to
regulate the supply of liquid to the evaporator (2). A high-pressure
sensitive switch (6) secures the cooling circuit against an inadmissible
overpressure.
THERMOSTATIC
MIXING VALVE
HOT WATER
OUTLET
HOT WATER TANK
956119
COLD WATER
INLET
17