Potterton NXR4 Installation, Operation & Maintenance Manual page 32

POTTERTON COMMERCIAL PRODUCTS DIVISION
INSTALLATION, OPERATION & MAINTENANCE MANUAL
NXR4
Fig. 21 – Additional Volt Free Signals Using Potterton Volt Free Contact Kit
(available through Commercial Sales Office - telephone number on the back of this manual).
VM1
R4 N R3
NO NC COM NO NC
14 12 11 14
2 – Way Volt Free Connector Box
N
VM2
N
COM
12 11
VOLT-FREE CONTACTS
ST
R4 – 1 STAGE RUN INDICATION
ND
R3 – 2 STAGE RUN INDICATION
N - NEUTRAL
CONNECTIONS
NO NC
11 –14 11 – 12
N0 = NORM OPEN
NC = NORM CLOSED
Note: Two volt-free contacts already fitted.
SECTION 6
PAGE 31