Steffes 5140 Owner & Installers Manual - Manual (Page 34)

Appendix  A.09 Comfort Plus Hydronic
System low Voltage Wiring Diagram - PSC Motor
The "r" and "C" positions in the low voltage terminal
strip may be used as a source of 24 VAC for powering
external low voltage devices (60 VA maximum).
BLUE/RED
PURPLE/WHITE
BLUE/YELLOW
YELLOW
GRAY
BLUE
TRANSFORMER
75 VA R C
PURPLE
GRAY/WHITE
ORANGE
BLUE/WHITE
BROWN
BLACK
GREEN
RED
YELLOW
WHITE
BLUE/RED
DISCHARGE AIR SENSOR
FOR OPTIONAL AIR HANDLER
COM
Peak Control Connections Terminals for Connection with Heat Pump
W O O2 H G Y Y2 P RP AP SC OS DS NO NC
DISCHARGE WATER SENSOR
YELLOW
ORANGE/BLUE
BLUE
BLUE/WHITE
ORANGE
YELLOW/BLUE
-
+ M
PROCESSOR BOARD
+
-
M
P
M
A
5130/5140
5120/5130/5140
UPPER BRICK CORE SENSOR
LOWER BRICK CORE SENSOR
RED
YELLOW
YELLOW
RED
HAZARDOUS VOLTAGE: Risk of
electric shock. Can cause injury or
death. All low voltage wiring must
be segregated from line voltage
circuits in the system.
WARNING