Froling FHG, Руководство по эксплуатации и обслуживанию

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Safety
Froling GmbH, Industriestraße 12, 4710 Grieskirchen, AUSTRIA Page 21
www.froling.com
B0600008_US
2
Overheat Thermostat (Safety Temperature Limit Switch – STL)
The Overheat Thermostat stops combustion at a boiler temperature of
212°F (100°C). The circulators continue to run!
In case Overheat Thermostat automatically has been activated:

Wait for boiler temperature to drop below 170°F (77°C)

Remove cap of Overheat Thermostat (STL) by screwing-off counter-
clockwise. STL located at right hand side of Boiler Control System
viewed from front side of the boiler.

Release STL by pushing button behind cap using a small screw driv-
er or ball point pen. Release is successful, when fault is gone on dis-
play.

Screw-on cap of STL again (clockwise).
On the Boiler Control System there is an Overheat Thermostat. If the
boiler exceeds 212°F (100°C) it will shut off the Induced Draft Fan.
Gravity Over-heat Dump Loop
A gravity over-heat dump loop is required for solid fuel boiler to dissi-
pate heat during power outages. In the event of a power failure, this
loop should provide dissipation for at least 10% of the boiler’s maximum
rated output. Usually this heating zone is connected to the heating sys-
tem by a solenoid valve, normally closed. In case of electrical power
failure the valve opens the Gravity Over-heat Dump Loop and fluid is al-
lowed to convectively circulate through this loop.
Overheat loop: with electricity
The Honeywell L4008B aquastat provided with the boiler is wired in
parallel with the thermostat on the zone with the most heating capacity
in the main living area. Upon reaching the aquastat set point (200
º
F)
the heating zone will be activated, pulling heat away from the boiler.
The home owner is alerted to a potential problem with the boiler by an
overly warm living space.
2.5 Emergency procedure
2.5.1 In the event of loss of electrical power

Do not open any Boiler Doors or Ash-Pit Door

Do not load fuel into the boiler

Push the black clutch release button on each actuator and manually
close the air dampers by turning them all the way counter-clockwise
(left).

Boiler Control System automatically restarts after power fail restart

One hour after power has returned, check system for normal opera-
tion and compare the pressure gauge reading to initial settings.
If system pressure is low, replenish water to the heating system ac-
cording plumber’s instructions.