Mounting and Wiring the Control
2-5
Wiring the AC Transformer
Transformer:
Connect the Transformer to terminals 1 and 2 on the
control board. See wiring table at right for wire size to
use.
Use wired-in or plug-in 110 (e.g. 1321)/220VAC
transformer, with 16.5VAC, 25VA output.
Notes
• Use caution when wiring the
transformer to the control to guard
against blowing the transformer fuse
(the fuse is non-replaceable).
• Wiring to the AC transformer must
not exceed 76m using 1.2mm O.D.
wire. The voltage reading between
terminals 1 and 2 of the control must
not fall below 16.5VAC or an “AC
LOSS” message will be displayed.
• Do not connect to AC mains power
while making any wiring connections
to the control. As a safety precaution,
always power down the control when
making such connections.
Wiring Table
Distance from control Wire Gauge
Up to 15m 0.8mm O.D.
15-30m 1.0mm O.D.
30-76m 1.2mm O.D.
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