geminox THR Series User Manual

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The THR boiler’s gas valve is controlled by the air
pressure supplied by the fan, thus guaranteeing a
correct air/gas ratio over the whole range of opera-
tion (constant CO
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spite any pressure drop in the combustion products
outlet or the air intake. The air-gas link is pneumatic.
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The THR boiler has a 230 volt variable-speed fan; It
is controlled by the regulator, which calculates the
speed needed at any given time to produce the re-
quired pressure.
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The THR boiler is fitted with a high performance pre-
mixed burner.
CO and NOx emissions are within the values laid
down by the most demanding quality standards.
(Blue Angel label).
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Manual adjustment of heating flow and domestic hot
water temperatures (if optional hot water tank in-
cluded) on the boiler control panel.
The heating regulator defines the heat output re-
quired to achieve the heating and hot water settings
entered by the user. These are set using tempera-
ture knobs for the boiler flow and hot water settings.
A winter/summer switch can be used to switch from
hot water only (summer position) to heating and hot
water (winter position).
Whether the switch is set to winter or summer, the
boiler is protected against freezing when the tem-
perature drops below 5 °C.
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Correction of flow temperature and adjustment of
hot water temperature (if optional hot water tank in-
cluded) on the boiler control panel.
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The hot water temperature setting is adjusted using
the hot water temperature control knob on the con-
trol panel.
Winter/summer switch set to the winter position, the
regulator automatically switches between winter
and summer. The boiler provides only hot water
when the average outdoor temperature exceeds
19 °C. Otherwise, the boiler provides heating and
hot water.
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P2: Gas valve output system
PL: Air pressure of air/gas servo-system
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geminox THR Series Specifications

General

Brand	geminox
Model	THR Series
Category	Boiler
Language	English