Control Panel Installation
P/N 151204 3-39
3.15.3 Using a MR-201/T Control Relay From Air Products
When the MR-201/T control relay is wired for polarity reversal, it reports alarm and trouble
events to a remote site. Alarms will override trouble conditions and it will not be possible to
reset the remote indicator until the condition is cleared and the control panel is reset.
If an alarm condition occurs, the alarm relay will close, overriding the trouble condition.
Current: 15 mA max.
Operating Voltage: 24 VDC nominal
Resistance: 4 KΩ
To install the MR-201/T for polarity reversal, follow the steps below:
1. Wire the MR-201/T as shown in Figure 3-29.
Figure 3-29 Wiring the MR-201/T
2. Program the NAC circuit as a nonsilence NAC (see Section 4.3).
Intended for Connection to a Polarity Reversal
Circuit of a Remote Station Receiving Unit
Having Compatible Rating.
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