Carrier 48MPD Installation, Start-Up And Service Instructions Manual page 21

OUTDOOR
TO 24-V
BRN 24V
ISOLATED
RED 24V
TRANSFORMER
CFM ACY
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
+ 43
-
44
45
+
CARRIER PART NO.
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
Fig. 23 — Humidifier
TB2
AIR
+
9
-
10
HUMIDIFIER
HUM VLV
ACTUATOR
HUMIDIFIER
HHR
RELAY
HK35AA001
PSIO
NO. 2
J6
+ 37
- 38
LEGEND
TB — Terminal Block
Field Wiring
Component Terminal
Fig. 24 — Hydronic Heating
PSIO
NO. 2
J7
31
6
TB2
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
HYD VLV
HYDRONIC VALVE
ACTUATOR