Johnson Controls DSH024C Series - FIGURE 15 - Typical Control Diagram for Three Stage Cooling (DSH096 C)

25
SECTION 1 – INSTALLATION
FORM 145.32-IOM5
ISSUE DATE: 04/08/2019
1
LD27706
FIGURE 15 - TYPICAL CONTROL DIAGRAM FOR THREE STAGE COOLING (DSH096C)
Common
24V Input
TRF
Standard Jumper
(If No Options)
Optional Condensate
Overflow Switch
Optional Smoke
Detector
24V Input
24V
SD–24
SD–R
C
X
OCC
RC
C
R
G
Y1
W2
W1
W3
Y2
Y3
1
2
1
3
4
5
2
X
R
SD
C
OCC
G
Y2
Y1
W2
W1
W3
Y3
Expansion Board
Terminal Block
Terminals on a
Limited Number of
Thermostats
Optional field installed jumper is required if desired to
change the unit logic to a two stage cooling operation
R
1
1
Thermostat
Terminals
6
Main Control
Terminal Block
NOTES
1. Unit is capable of supporting up to three stages of discrete heating.
2. Unit is designed to support three stages of discrete cooling.
3. Jumper is required for any combination of R, RC, or RH.
4. OCC is an output from the thermostat to indicate the occupied condition.
5. X is an input to thermostat to display the error status.
6. Jumper is required if no option is installed between SD-24 and SD-R.