42 VAV Controller—Variable Air Volume Controller
Figure 16 illustrates the polarization of the 6-pin and 8-pin phone jacks on
the VAV Controller or Metastat. Terminal 1 is to the extreme left as you
face the jack opening, tab notch down.
6-pin
PHONEJK
8-pin
Figure 16: Phone Jack Polarization
The following table defines the pin usage for each jack.
Table 13: Phone Jack Pin Identification
8-Pin Jack
(VAV Controller to Metastat)
6-Pin Jack (VAV140/141 Controller
to CBLPRO or ZT and CBLPRO or
Zone Terminal to Metastat)
Pin Signal Pin Signal
1
AI 3 Heating Setpoint
1
Not used
2
AI 2 Warmer, Cooler, or
Cooling Setpoint
2
24 VAC
3
AI 1 Temperature Sensor
3
24 VAC/ZBus Common
4
AI 1 Sensor Common
4
Not used
5
24 VAC
5
Zone Bus
6
24 VAC/ZnBs Common
6
Not Used
7
AI 2/3 Common
8
Zone Bus
Note: Refer to the Vendor Code Numbers in the Ordering Information
section of this technical bulletin for information on cables.
Phone Jack
Polarization
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