Simplified Wiring Guide for R, Y1, Y2 Terminals

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R Terminal

24VAC TRANSFORMER1

UCB Main Pin1

UCB Unit Shutdown Smoke Shutdown A 24VAC OUT

UCB Unit Shutdown Smoke Shutdown B

UCB Unit Shutdown Remote Shutdown A

UCB Unit Shutdown Remote Shutdown B

UCB PMR 24V A

UCB PMR Cont B

UCB Main Pin7

LSM

UCB Main Pin8

R Terminal (You Now have R)

Y1 Terminal

UCB THERMOSTAT Y1 TERMINAL

UCB ECON Pin1 Blue to

PL6 Pin2 Blue Loop Plug

PL6-R Pin2 Blue Loop Plug

PL6-R Pin5 Blue Loop Plug

PL6 Pin5 Gray Loop Plug

UCB ECON Pin2 Gray

UCB REHEAT/HP Pin1 Gray

REHEAT CONTROL Pin6 Gray

REHEAT CONTROL Pin5 Gray*

UCB REHEAT/HP Pin2 Gray*

UCB COMP Pin2 and

UCB to LPS1 to

UCB HPS1 to

UCB Comp Pin3 to

FTP to

COFS to

CC Compressor Contactor

Y1 Terminal (You now have Y1)

Y2 Terminal

UCB THERMOSTAT Y2 TERMINAL

UCB ECON Pin4 Yellow to

PL6 Pin8 Yellow Loop Plug

PL6-r Pin8 Yellow Loop Plug

PL6-R PIn9 Yellow Loop Plug

PL6 Pin9 Orange Loop Plug

UCB ECON Pin3

UCB REHEAT/HP Pin3 Orange

REHEAT CONTROL Pin11 Orange

REHEAT CONTROL Pin10 Orange*

UCB REHEAT/HP Pin4 Orange*

UCB COMP Pin1

LDR (LOADER)

Y2 Terminal(You now have Y2)

The next series will show W1, W2 and Reheat! In various configurations, like UCB, CTB etc…

The link to wiring diagram above shows color paths for colors above and two diagrams one for Siemens economizer and Honeywell (Jade) W7220 control on the other diagram.

Disclaimer: The technical statements, information and recommendations contained herein are believed to be accurate as of the date hereof, but Mingledorff’s does not make representations or warranties, express or implied, as to its accuracy, its completeness, or the results to be obtained. The information is being provided for informational purposes only and is intended for use by persons having adequate skill and expertise regarding the proper selection, use and application of the products and recommendations and at their own risk and discretion.