SECTION 6
POTTERTON COMMERCIAL PRODUCTS DIVISION
INSTALLATION, OPERATION & MAINTENANCE MANUAL
PAGE 24
Fig.21 - Pump Overrun Using Changeover Pipe Thermostat
Fig.22 – Volt Free Connections
L1
L2
L3
N
Control
Panel
Terminals
Incoming
Supply
Pump
No
C
Nc
Auxillary Contact on boiler
time control etc
Pipe
Thermostat
Set <55
o
L
4 – WAY VOLT-FREE CONNECTOR BOX
R2
N
240 V
AC
NO
14
NC
12
COM
11
R1
N
240 V
AC
NO
14
NC
12
COM
11
R4
N
240 V
AC
NO
14
NC
12
COM
11
R3
N
240 V
AC
NO
14
NC
12
COM
11
11
9
6
4
N
VOLT-FREE CONTACTS
R1 – BURNER LOCKOUT INDICATION
R2 – 1
ST
STAGE RUN INDICATION
R3 – 2
ND
STAGE RUN INDICATION
R4 – OVERHEAT INDICATION
N - NEUTRAL
CONTROL PANEL TERMINAL STRIP
Summary of Contents for Isis HE
Page 1: ...MAY 2004 ...