Expansion Vessel
The expansion tank meets the expansion of the
hot water circulating in the central heating
(heating circuit) circuit, which is a closed circuit
system.
Tank volume is 6 litres and inlet connection
point is G3/8 (external thread)
Differential Air Pressure Switch (APS)
The differential air pressure switch is used in hermetic models. It monitors air flow by measuring the
pressure difference between fresh air and waste gas required for combustion. When there is a
blockage in the hermetic chimney set or in the case of severel external air currents, the differential air
pressure is switched off to stop the combination from operating. The low pressure inlet of the
differential air pressure switch is connected to the fan via a silicone hose. The high pressure inlet is
again connected to the combustion chamber by means of a silicone hose.
At the start of operation, the differential air pressure switch is on. In the first stage, the fan starts to
run, when the pressure difference rises above the set value within a certain period of time, the switch
closes and the combination starts working. When the pressure difference falls below a certain value,
the switch is opened and the combination is inhibited from operating.
Fan
The fan allows both the discharge of exhaust
gas and the fresh air required for combustion
in the hermetic combination.
Maximum power:
48W
Inner diameter of silicon hose : 5 mm
Limit Thermostat
Limit thermostat is bimetal type. The limit
thermostat opens when the water temperature
from the exchanger exceeds 105°C and stops the
operation of the combination by cutting off the
signal to the electronic board and provides safety.
When the water temperature falls below 75°C, the
limit thermostat switches off and allows the
combination to restart after a reset. Limit
thermostat is mounted in monotermic models with
2 screws (YSB 2.9 * 6.5) to the upper central
heating flow pipe.
Summary of Contents for GP11
Page 1: ...GP 11 13 16 20 24 kW HM HERMETIC MONOTERMIC COMBI BOILER SERVICE MANUAL...
Page 7: ...8 SERVICE PARAMETER LIST...
Page 8: ...9 OPERATION PARAMETERS...
Page 22: ......