Johnson Controls Penn System 450 Series Technical Bulletin page 30

Figure 12 shows the System 450 UI Main screens, System Status screens, and
System Setup screens for the control system shown in Figure 11.
C
Sn1
C
Sn3
C
Sn2
L1
L2
Room
Sensor
Sn3
Room
Heating
Loop
C1
Room Heating
Circulation Pump
Figure 11: Solar Water Space Heating Control System Example That Uses
30 System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin
C450CCN-x
C450YNN-1C
Control Module
Power Module
OUTR1, OUTR2
WIRING
24V Sn2
C
C
Sn1 Sn3
5V
C
240 120
VAC VAC
C2
Solar Water
Storage
Tank Storage
Sensor
Sn2
the Differential Control Feature
Solar Panel
Sensor
Sn1
C450SBN-x
Expansion
Module
OUTR3
C1
C2
Solar Panel
Circulation Pump