UNT Controller—Unitary Controller (UNT) 91
Appendix B: UNT100/101
This section contains information specific to the discontinued
UNT100/101. To troubleshoot the UNT100/101, refer to the
Troubleshooting section of this technical bulletin.
The following list contains features of the UNT100/101 which differ from
the other UNT types.
•
No earth ground connections are allowed when wiring a
UNT100/101 series controller.
•
The N2 bus is not isolated. The secondary of the 24 VAC transformer
cannot be grounded.
•
The BIs can accept dry contacts only, not 24 VAC. They can also
accept 100 Hz as accumulator input.
•
The BO is not jumper selectable. The triac switches to the common
side of 24 VAC only.
untrm100
BINARY IN BINARY OUTPUTS
%,1$5< ,1
$1$/ 2* , 138 76
$1$/ 2 * , 13876
&20 021
%,1$5< &20
9'&
&20
3:5
,1
9
$&
%,1$5< 287387
9$& 72 /2$'6
9'&
$1$ /2*
287387
$1$/ 2*
287387
&2 0021
70
OFF
1 2 3 4 5 6 7 8
AS-UNT101-0
+
-
BINARY OUTPUTS
BINARY INANALOG INPUTS
TO ZONE STAT
ZBUS
AREF
NA+
NA-
24VAC
COMMON
24VAC
POWER
Figure 41: UNT100 Terminal Designations
What’s Different
About the
UNT100/101
UNT100/101
Terminal
Designations
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