TREND NuAire XBOXER XBC 75 ECOSMART2, Installation, Control Details, Operating And Maintenance, Page: 28 / 48

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XBOXER XBC ECOSMART2 (NT) MODELS
16.0 ELECTRICAL DETAILS
16.6 CONNECTION CHART
3RM-2 Relay Module
(HRM Mode)
IQ422 Expansion Module Din Rail
Description Terminal No. Terminal No. Terminal No. DI AI DO AO
Fresh Air Sensor 1 (4,5) 1
Supply Air Sensor 2 (6,7) 1
Return/Room Air Sensor 3 (8,9) 25-26 1
Input 4 4 (10,11) 1
Input 5 5 (12,13) 31-32 1
Alarm Circuit 1 (Fan, Heater) 4DIX Terminal A 27-28 (Some Models) 1
Alarm Circuit 2 (Pump, Filter) 4DIX Terminal B 29-30 1
Volt-Free Enable Input Signal 4DIX Terminal C 33-34 1
Volt-Free Boost Input Signal 4DIX Terminal D 35-36 1
Extract Fan 0-10V 7 (16,17) 1
Supply Fan 0-10V 8 (18,19) 1
Heat Demand 0-10V 9 (20,21) 1
Cool Demand 0-10V 10 (22,23) 1
Bypass Damper 1
Healthy signal to Relay 4 1
Link from IQ422 GND to AC GND 11 (25) 23
Volt-Free Fan Run Relay 12 (26,27) 3RM-2 Relay 1 1
Volt-Free Cool Demand Relay 3RM-2 Relay 2 1
Volt-Free Heat Demand Relay 3RM-2 Relay 3 1
230V Enable Input 10 1
230V Fan Boost Input 11 1
Volt-Free Healthy Relay 13-14 1
4DIX Input
3RM-1 Relay Module
(TRM Mode wired for
binary switching)
6 (14,15)
11 (24,27)
Wired for binary switching.
See 3RM Datasheet for info.