Automatic opening of the safety / relief valve
When the temperature at the safety / relief valve is below about 3 °C, the safety
/ relief valve opens automatically, the pushbutton comes out (position c). The
water in the boiler ows out via the discharge opening (d).
Safety / relief valve
The safety/relief valve automatically compensates for pressure when high
pressure is created in the system. In this case, the water is discharged outwards
intermittently via the discharge opening. This safety/drain valve does not protect
the water tank from damage by freezing.
a= Lever in “Operation – off” position
b= Lever in “Operation – off” position
c= Lever in “Drain” position
d= Drain opening (outward from the vehicle oor)
Opening the safety/relief valve
Move the lever vertically to the (c) position. The water in the boiler ows out over
the discharge opening (d). To ensure a safe ow of water, the accumulation of
dirt (snowy, mud, ice, brushwood, etc.) must be prevented at the discharge port
(d) of the safety / drain valve! No warranty can be claimed for damage caused by
freezing!
Closing the safety/drain valve
Move the lever horizontally to the (a) or (b) position.
2.11 Filling the boiler
Make sure that the safety / drain valve is closed (see section “Closing the safety
/ drain valve”).
The temperature in the FrostControl is approx. If it is below 7 °C, rst turn on
the heater to heat the installation site and the Frost-Control. After a few minutes,
when the temperature in the FrostControl rises above 7 °C, the safety/drain valve
can be closed.
- Turn on the power to the water pump (main switch or pump switch).
TRC458
Combi
60
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