Regulation Of The Water Temperature; Protection Against A Shortage Of Water; Maximum Temperature Protection; Air Differential Pressure Switch - REMEHA Gas 310 ECO PRO-285 Installation, User And Service Manual

Gas 310 ECO PRO - Gas 610 ECO PRO
3.4

Technical specifications

160514 - 125467-05
¼For more information on controlling a modulating pump, See
paragraph: "Electrical connections", page 36.
Parameters p43 and p44 are used to modify the pump settings.
¼See the Installation and service manual HMI GAS 310/610 ECO
PRO for comprehensive operating instructions. This includes
information about changing and reading parameters, the meaning of
fault codes and deleting the failure memory.
3.3.4.

Regulation of the water temperature

The boiler is equipped with electronic temperature control based on
flow, return, and boiler block temperature sensors. The flow
temperature can be set between 20°C and 90°C. The boiler reduces
its power when the set outlet-temperature is attained. The cutout
temperature is the set heating outlet-temperature + 5 °C.
3.3.5.

Protection against a shortage of water

The boiler is fitted with a safety device to prevent the shortage of water
based on temperature measurements (Temperature difference
between flow and return). If ΔT = 25 K is reached (factory setting),
the boiler reduces its output by modulating to remain in operation as
long as possible. If ΔT ≥ 25 K the boiler goes into part load. If ΔT >
25 + 5 K the boiler goes into a normal control stop (blocking).
3.3.6.

Maximum temperature protection

The maximum protection switches the boiler off if the water
temperature is too high (110°C) and locks it on the control box (Fixed
value, cannot be modified). Once the fault has been rectified, the
boiler can be reset by pressing the J button for 2 seconds.
3.3.7.

Air differential pressure switch

Before a start and when the boiler is in operation, the air pressure
differential switch PS measures the difference in pressure between
the measuring points at the rear of the heat exchanger p
-
box p . If the pressure difference is greater than 6 mbar, then the boiler
will lock out. Once the fault has been rectified, the boiler can be reset
by pressing the J button for 2 seconds.
3.4.1.

Boiler type Gas 310 ECO PRO

3. Technical description
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and the air
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