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14.0 PUMP - RELAY CONTROL FOR AMPTEC BOILERS
2 or 3 boilers on single phase 240V or three phase 415V supply
Isolation relays must be used as shown in figure 21 opposite for 2 or more boilers to operate the pump.
Boilers can be connected on a single phase 240V supply or on separate phases of a 415V supply.
Relay specification:
Coil
Contacts
Isolation
Capacitor
For 2 boilers use Heatrae Sadia part number 95 970 135
For 3 boilers use Heatrae Sadia part number 95 970 136
26
240V 50 Hz
240V 10Amps N/O (Normally Open)
Coil to Contact - 415V minimum working.
4.7uF 240V 50Hz Class X2
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