Appliance For Excessive Heat Removal - Cooling Circuit; Boiler Attack Fd Solid Fire Used In System Of Open Air Exhaustion And Natural Water Flow - ATTACK FD20 Instructions For Use Manual

8 APPLIANCE FOR EXCESSIVE HEAT REMOVAL – COOLING
CIRCUIT
WARNING: For admitting claim there must be used a cooling circle and thermoregulation
circle with ATTACK FD SOLID FIRE boiler used in closed ventilation system.
A cooling circuit serves to excessive heat removal so that the highest water temperature 110°C
in the boiler was not overreached. The cooling circuit is connected to the boiler flanges. In case
the pump stops working, discharge water is cooled by the cooling circuit, as overheating could
cause opening the thermoregulating valve by 95°C. Return water is carried with the help of an
interconnection between cooling circuit and the flange of return water.
Hydraulical chart of cooling
circuit's connection
Outlet of heating water to the system
Inlet of return water from cooling circuit
9 BOILER ATTACK FD SOLID FIRE USED IN SYSTEM OF OPEN
AIR EXHAUSTION AND NATURAL WATER FLOW
In the system of open air exhaustion and natural water flow it is not necessary to use a cooling
circuit with a thermoregulation valve.
WARNING: Follow the rules against water pollution!
Outlet of cooling water
Inlet of cooling water
Thermoregulation valve STS20
Inlet of return water to the boiler from the system
Thermoregulation valve STS20
Min. temperature
Set-up temperature
(initial opening)
Max. flow temperature
Max. operation pressure 10 bar
Max. flow
–10 °C
97 °C
110 °C
3
6,5 m /h
11