SUPER-Selector
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PT Control
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Alarm Output
The alarm output relay is energized whenever the control sensor reads higher than the
high alarm setting, lower than the low alarm setting, or any of the installed sensors fail.
If the CONTROL SENSOR fails, the control also locks itself into the stage that the
control was in at the moment of failure and continues to operate in that stage and mode.
Powered Inlets
Chore-Time recommends using a separate, independent, static pressure monitor
controlled, power inlet system as part of the total ventilation system to most fully
realize the benefits of staging fans while in power ventilation mode.
Wiring the System
Chore-Time recommends limiting the load for each relay to 1 H.P. This is to help
insure years of trouble-free operation from your control.
There are enough relays that no external contactors are required. Because of the
concentration of wires into one box, it is recommend that the wire entry into the box
be through conduits(s) as opposed to romex connectors.
A ground lug is provided in the lower center of the box and must be used. It is a very
important part of the lightning protection.
All outputs on the terminal strips are from SPST relays. Each input is connected to
the common terminal of the SPST Relay and the output is the normally open
terminal of that same relay.