Hot Water Boiler Manual – Models H 635, H 650
11
O’ = 35 dm
3
(selected value)
The actual volume
O
the pressure expansion vessel shall be determined using the calculated volume of the
pressure expansion vessel
O
’ as the next higher size manufactured
.
J) Fitting the boilers with overheating safety device
The H6 line boilers are fitted with the safety heat exchanger for removing the excessive heat complying with the
Czech standard CSN EN 303-5 and the Government Decree No. 163/2000 Coll. This exchanger shall ensure
that the highest permitted temperature of water in the boiler (i.e. 110 °C) is not exceeded. The safety heat
exchanger is designed as the through-flow water heater which is controlled by the safety relief valve on the
outlet. The connection sizes of couplings allow utilization of the TS 130 discharge fitting with a double sensor
manufactured by Honeywell. Our product is certified for this valve type.
Functional principle:
The sensor in the tank installed in the rear section of the boiler monitors the water temperature in the boiler.
If the water temperature in the boiler exceeds 95 °C, the valve starts opening automatically and supplies water to
the inbuilt safety exchanger which takes out the heat. This way the boiler overheating is avoided. As soon as
water in the boiler cools down, the valve starts closing automatically and the cold water supply to the safety
exchanger is closed completely after all. This activity may take place several times. This depends on the fuel
quantity in the charging shaft or on the time for which the reduced heat consumption by the heating system took
place respectively.
Notice:
- carry out the assembly and connection according to the picture on page 12 and instructions by manufacturer
- it is always necessary to connect the withdrawal safety valve to water inlet into cooling loop so that the
cooling loop would not be under the constant pressure of service water
- we do not recommend any other cooling loop connection – see. picture Boiler connection
- in case of non-observance of the recommended cooling loop connection to the boiler according to the
instruction manual, an over-pressuring of the cooling loop and thus its leakage may occur,
a loop damaged in
this way does not fall within the conditions for guarantee
- the valve attachment to a permanent source of cooling water with the pressure of min. 1 bar (preferably
public water pipes) with the temperature of ca. 15°C is necessary for the correct operation of the valve
- recheck the correct operation of the valve at least once a year
- in case of unclearness of the cooling loop connection contact a service worker at the manufacturer under tel.
571 675252 or 602 743970
