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TO 24-V
ISOLATED
TRANSFORMER
BRN
RED
CFM ACY
OUTDOOR
AIR
24V
24V
+
-
TB2
9
10
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
□
Terminal Block Terminal
Fig. 21 — Outdoor Airflow Control
Fig. 22 — Timed Discrete Output
PSIO
NO. 2
J6
HUM VLV
CARRIER PART NO.
HK35AA001
43
44
45
HHR
+
+
-
HUMIDIFIER
ACTUATOR
HUMIDIFIER
RELAY
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
Fig. 23 — Humidifier
37
38
HYD VLV
HYDRONIC VALVE
ACTUATOR
PSIO
NO. 2
J6
+
-
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
Fig. 24 — Hydronic Heating
TB2
31
6
PSIO
NO. 2
J7
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
□
Terminal Block Terminal
Fig. 25 — Freezestat
LEGEND
CV — Constant Volume
VAV — Variable Air Volume
Fig. 26 — Remote Supply Air Temperature
Reset/Space Temperature Offset
21