Installation Guide

Y1
Y2
W
G
O/B
R
X
Y1
Y2
W1
W2
G
O/B
R
X
Y1
Y2
W1
W2
G
O/B
R
Y1
Y2
W1
W2
G
O/B
R
R
X
iO-TWIN
1 2 3 4 5 6 7 8
iO-TWIN
LEAD/LAG
CONTROL
Y1
W1
G
O/B
R
X
Y1
W1
G
O/B
R
X
WIRING DIAGRAM USING iO-LL LEAD/LAG CONTROLLERS AND iO-TWIN
TWINNING KIT FOR 2 HEAT / 1 COOL HEAT PUMP
WITH UPSTAGING
(Auxiliary / EH Heat Work Together)
iO-06-1107-090120
Indianapolis, IN 46237
www.iohvaccontrols.com
For Technical Support Call Toll Free: 866-225-5032