3.10.1 Power quality and electrical protection
In areas of unreliable power, appropriate surge protectors and or power conditioning equipment
should be installed in power supply wiring circuits.
Note
The IBC boiler (like any modern appliance that contains electronic equipment) must have
a “clean” power supply, and is susceptible to power surges and spikes, lightning strikes
and other forms of severe electrical “noise”. Power conditioning equipment (surge
protectors, APC or UPS devices) may be required in areas where power quality is
suspect.
3.10.2 120VAC line-voltage hook-up
Line-voltage wiring is done within the field-wiring box (see Wiring diagrams on page 119). Connect
the boiler to the grid power using a separate, fused circuit and on/off switch within sight of the boiler.
Use 14-gauge wire in BX cable or conduit properly anchored to the boiler case for mains supply and
pump circuits.
Figure 36 Line voltage load pump terminals
Caution
The on-board controller load pump relays are protected with 5 Amp fuses. The maximum
recommended load on each fuse is 4 Amps (80% of rating). The maximum combined
pump load is 10 Amps. Isolation relays or contactors must be used if the loads exceed
these maximums.
Connect a 120VAC / 15 amp supply to the "AC IN" tagged leads in the wiring box.
3.10.1 Power quality and electrical protection
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