Install Instructions

P 800.995.2222
DiversiTech Corporation
www.diversitech.com
U.S. Patent 7,821,411
DOC32447
TYPICAL SINGLE STAGE CONNECTION
Air Handler
Thermostat
SOS Switch
Condenser
(contactor only)
X
Y
R
G
W
Y
C
Y
R
G
W
C
HEAT PUMP WITH DEFROST BOARD
Condenser
(contactor, unloader
valve circuit board)
Check current with
clamp-on Amp
Meter. Must be
< 2.5 Amps.
X
Y
R
G
W
Y
R
W
C
Y
R
G
W
C
Thermostat
SOS Switch
Air Handler
HIGH EFFICIENCY UNITS
X
Y1
Y2
R
G
W
Y1
Y2
R
W
C
Y1
Y2
R
G
W
C
Thermostat
Air Handler
SOS Switch
Check current with
clamp-on Amp
Meter. Must be
< 2.5 Amps.
Condenser
(contactor, unloader
valve circuit board)
RELAY FOR HIGH CURRENT AND SPECIAL APPLICATIONS
Where the load cannot be assured, or multiple circuits must be interrupted, it is suggested
to connect a control relay (such as the DiversiTech 8400 or 9400 series) to control the load(s).
Air Handler
or Controls
Thermostat or
other controls
Contacts
to High
Current Load
DiversiTech
Relay part
number
D90-370
X
R
C
24VAC
24V Relay
SOS Switch
•Refrigeration
Units
•A/C Units
where large
loads such as
gas valves or
reversing valves
must be
switched
•Special appli-
cation such as
building auto-
mation and
alarm systems
V.3 1/14