Johnson Controls METASYS VAV110 - Page 47

VAV Controller—Variable Air Volume (VAV) Controller 47
n2wire1a
NCU
(TB1 on Communication
Terminal Board)
To
Next
N2
Device
N2 REF
N2 -
N2 +
HRD
GRD
SFT
GRD
REF
SFT
GRD
N2+
N2-
1
2
3
6
5
4
N2 +
N2 -
N2 REF
REF N2- N2+
1 2 3 4 5 6
BINARY INANALOG I NPUTS BIN ARY O UTPUTS
BINARY INPUT
ANALOG INPUTS
1 2 3 4 5 6 1 2 3 4
ANALOG INPUTS
CO MMO N
TO
ZONE
STAT
BINA RY OUTPUT
1 2 3 4 5 6 7 8
Z BUS
DSI
1 2 3 4 5 6
BINARY COM
R
Note: Since the VAV Controller is a self-terminating device, end-of-line termination for the
N2 Bus is not required.
Figure 20: Connecting the VAV Controller to an NCM
Table 14: Terminal Locations
TB1 Terminal Function Number VAV Connection
Chassis Ground
6 None
Soft Ground
5 None
N2B Ref Ground
4 AREF
Soft Ground
3 None
-N2B Connection
2 N2 Bus: N2-
+N2B Connection
1 N2 Bus: N2+
N2 Wiring to the
Network Control
Module