Wiring Instructions - Aztec EB 897 01 Installation Instructions Manual

WIRING INSTRUCTIONS

(continued)
3 PHASE SUPPLY CONNECTIONS FOR 2 OR
MORE BOILERS
MAINS SUPPLY CABLES
Connect each boiler to each phase.
CONTROLS SIGNAL
Wire as shown in wiring diagram.
PUMP CONNECTIONS
The pump to be connected to one boiler only.
See wiring diagram
IMPORTANT: ALL ELECTRICAL CONNECTIONS
SHOULD BE CHECKED, LOOSE CONNECTIONS CAN
CAUSE PROBLEMS.
WARNING: THIS APPLIANCE MUST BE EARTHED
1. Any exposed pipe work must be earthed in
accordance with IEE regulations.
2. On completion of installation all electrical; work
must be tested to IEE regulations and NICEIC
inspection and completion certificate must be
issued.
PUMP WIRING FOR MULTIPLE
BOILER INSTALLATION
Supplied By www.heating spares.co Tel. 0161 620 6677
IMPORTANT: When a 3-phase supply, a warning
FIG. 14
WIRING FOR EXTERNAL PROGRAMMER
CONTROLLING 3 BOILERS ON A 3 PHASE SUPPLY
11
notice MUST be placed by the boiler
to indicate a voltage in excess of 250v.
FIG. 15 FIG. 15