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8
9
10
12
11
10
DSIO2
J5
CHANNEL
60
TB3
FIELD
CONTROL
WIRING
RED
BLU
ORN
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
□
Terminal Block Terminal
Fig. 15 — Heat Interlock Relay
SR
+
ENTHALPY
CONTROL
REMOVE
620 Ω
RESISTOR
S
+
ENTHALPY
SENSOR
DIFFERENTIAL
ENTHALPY SENSOR
(RETURN AIR)
Fig. 16 — Differential Enthalpy Sensor
LEGEND
DSIO — Relay Module
Fig. 17 — Remote Start
12
7
13
15
TB3
ACCESSORY
OUTSIDE AIR
RELATIVE HUMIDITY
SPACE/RETURN
RELATIVE HUMIDITY
2
1
2
1
1
2
1
2
J2
J1
J2
J1
24V
FIELD-SUPPLIED
24-V ISOLATED
POWER SUPPLY
24V
FIELD-SUPPLIED
24-V ISOLATED
POWER SUPPLY
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
□
Terminal Block Terminal
Fig. 18 — Accessory Humidity Control
28
22
25
J7
PSIO
NO. 2
TB2
6
PRESSURIZATION
PURGE
EVACUATION
SHUTDOWN
19
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
□
Terminal Block Terminal
Fig. 19 — Fire/Smoke Control
PSIO
NO. 2
J7
24V
9
1
10
5
INDOOR AIR
QUALITY ACY
+
-
FIELD-SUPPLIED
24-V ISOLATED
POWER SUPPLY
16
17
Fig. 20 — Indoor Air Quality
20