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12
auxiliary relay (optional kit) cont.
Installation (internal)
1. Secure Relay by removing adhesive backing tape
2. Attach pre-made blue wire to terminal 1 on Relay
3. Attach pre-made red wire to terminal 0 on Relay
4. After removing protective fi lm, attach Cable Pad
to rear of hinged door in location shown
5. Use Zip Ties as shown
6. Connect blue wire to terminal marked ‘SP2’ on rear of Display
7. Connect red wire to terminal marked ‘PSU+’ on rear of Display
8. Drill hole 5/8” (16mm) diameter hole for Cable Gland Be careful not to damage Relay
1
2
3
4
5
6
7
8
Installation (external)
The Auxiliary Relay comprises two sets of double pol / double throw dry contacts. Both sets of contacts will operate at the
same programmed fl ow rate as set in
Step 5
above. Each of the two sets of contacts has a normally open and a normally
closed relay. The ‘normal state’ is the condition that the contacts are in before they are activated by the coil is energized by
the programming value. Please refer to the Auxiliary Relay Connection Diagram show on Page 7 of this document.
Using the cable spade connectors provided, connect the external wiring to the required Auxiliary Relay outputs. For example,
if the Heater requires a contact closure to operate, connect the heater enable circuit to either terminals 4 and 2, or 8 and
6. Both of these are normally open contacts that will close when the relay coil is energized by the setting applied in
Step 5
above.
1
1
2
3
4
5
6
7
8
