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13.17
Connection of STB temperature
limiter
To avoid boiler overheating in case of
regulator failure, STB or other safety
temperature limiter proper for the given
boiler has to be provided.
Connect STB limiter to terminals 1-2 of
working module shown in Fig. 18. Once the
limiter has tripped, fan and fuel feeder motor
are OFF.
Safety temperature limiter should
be suitable to operate at rated
voltage min.230V AC and hold
required certificates of approval.
In case the limiter is not installed- bridge the
terminals 1-2 using insulated wire of cross-
section area of min.0.75 mm
2
with insulation
enough thick to meet safety requirements for
the boiler.
Acc. recent regulations, use of
safety temperature limiters is
mandatory.
13.18
Connection of room control panel
Regulator may be equipped with ecoSTER-
TOUCH room control panel, which may
perform following functions:
room thermostat,
boiler control panel
alarm annunciator,
fuel level indicator.
Note: Cross-section area of wires
used to connect ecoSTER-TOUCH
control panel should be of min.
0.75mm
2
and its max. length
should not exceed 30 m.
This length may be longer if the wires used
have cross-section area larger than 0.75mm
2
4-wire connection:
2-wire connection:
For two-wire connection, power supply of 5 V
DC and rated current of min. 500 mA is
required.
Points to supply ecoSTER-TOUCH:
Connect GND and +5 V to external source of
supply
5
.
Connect lines D+ and D- acc. wiring diagram
provided below.
5
PS unit is not included in the regulator
supply.
Summary of Contents for ecoMAX810P3-L TOUCH
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