Pereko AGRO Multi 12, Operation And Maintenance Manual

Page: 71 / 116

35
Connection of the boiler shunt pump 1- ecoMAXX
regulator - module A, 2
– boiler shunt pump, 3 –
relay RM 84-2012-35-1012 RELPOL and base
GZT80 RELPOL
The
boiler shunt pump may operate basing
upon the read-out of:
- the return temperature sensor - the pump
starts once temperature at the boiler return
sensor has dropped below the value set in
the
parameter CH pump activation
temperature available in the main menu. It
is recommended to set this value at min.
50°C,
- the return temperature sensor and the
boiler temperature sensor - the pump starts
once the temperature difference has
exceeded the value of H1 parameter and
stops once it has dropped below H2 value.
Those parameters are available in:
Menu Service Settings Pumps. The
condition: H1>H2 has to be fulfilled.
For a proper operation of the hydraulic
system with the boiler shunt pump, a control
valve to limit the flow has to be installed and
adjusted.
It is recommended to connect the
regulator (1) and the pump (2) to
one common source of power
supply. This solution will enable
disconnecting power supply to
both equipment at the same time.
11.16 STB temperature limiter
Version with temperature limiter
When temperature of water in the boiler
exceeds 95
°C , power supply of the electric
feeder and the fan is cut off by the safety
temperature limiter. To reset the limiter it is
needed to press the button placed in the side
of the casing, near the power switch.
Pressing of that button is only possible when
temperature of water in the boiler drops.
Version without temperature limiter
If the regulator ecoMAX910R1 is not factory-
equipped with the safety temperature limiter,
the STB should be connected as an external
device. The STB temperature limiter should
be connected to the 1-2 terminals shown on
the
electric scheme. If the safety
temperature of water in the boiler exceeds,
the power supply of the fan and the engine
of feeder will be cut off by the temperature
limiter.
Safety temperature limiter should
have nominal operation voltage of
~230V and should follow current
regulations.
Warning: 1-2 terminals are under
dangerous voltage.
11.17 Connection of room control panel
The ecoSTER200 room control panel may be
installed. Main functions of the panel are
following:
- room thermostat (3 thermostat units),
- boiler control,
- alarm annunciator,
- fuel level indication.
4-wire connection:
The panel ecoSTER TOUCH should be
connected to the G3 connector of the
regulator, according to the electric
scheme.
The version 2 of the panel ecoSTER200
should be connected as shown in the
picture below, together with room
sensors CT7 of a thermostat 2,3.