3.13.1 Power management, 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.
In temporary or manual operation, for example in new construction heating, use a construction
thermostat or jumper with an in-line on/off switch for on/off management of the boiler. Do not turn off
the heat by removing power to the boiler. This will interrupt the moisture management routine (fan turns
at ultra low rpm for 90 minutes after burner shutdown) resulting in serious damage to the boiler. Treat the
boiler like a computer, where you do not just pull the plug when done.
3.13.2 120VAC line-voltage hook-up
Line-voltage wiring is done within the field-wiring box (see Wiring diagrams on page 97). 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 40 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.
3.13.1 Power management, quality and electrical protection
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