FireBird Bio-Tec, Руководство пользователя

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Page 17
6. 7 Electrical connections
Electrical connections to the Bio-Tec are made to two terminal blocks located behind
the digital controller. These terminal blocks can be accessed by removing the top
panel behind the digital controller. The terminal block on the left hand side contains
all the power and relay connections while the block on the right hand side is for
sensor and stat connections.
Power/Relay Connections – Left hand terminal block
The mains power and fan connections
are already pre-wired. The earth, live
and neutral for the three circulating
pumps are connected according to the
symbols shown on the block.
P1 = boiler pump / Laddomat
P2 = heating circulating pump
P3 = circulating pump to hot water
storage tank (if connected)
Sensor & Stat Connections - Right hand terminal block
The table below identifies the different sensors used on the Bio-Tec boiler and the
sensor type. Two types of resistant sensors are used – PT1000 and a NTC 5k/25
sensor. The performance of these sensors can be checked using the resistance
charts shown in tables 2 and 3
No. Measures Sensor Type
O1 Boiler Temperature NTC 5k/25
O2 Flue Gas Temperature Pt1000
O3 Accumulator Tank Upper
Temperature NTC 5k/25
O4 DHW Tank Temperature NTC 5k/25
O5 Reserved for additional
accumulator tank NTC 5k/25