Auto-Zone Control Systems EZ-Zone to Auto-Zone Upgrade Guide (Version 01C) - Manual (Page 23)

EZ Zone/Auto-Zone
Upgrade 23
Honeywell Economizer Actuators
TR
T1
P
P1
24VAC 24VAC
Zone Manager
Wiring OE266-01 Actuator Interface Module Kit To Zone Manager (Basic & Plus Systems)
Installing MS000204 Interface Module To Honeywell M7415 Or 7405 Actuator
Q769C1007 Interface Module
(WM # MS002004)
Warning:
!
An Isolation Transformer
Must Be Used For Connection To
Actuator Or Serious Damage Will
Result
+
TR1
T
-
A1
G
TB2
A2
G
OUTPUTS
ANALOG
A1
N.O.
CONTACTS
EXHAUST
AUX3
GND
GND
AUX2
AUX1
ANALOG
SAT
OAT
RAT
INPUTS
+12V
Honeywell Series M7415
Or M7405 Actuator
24
VA
C
24
VA
C
T1 T1
TR TR
T T
P
P1
TR1 TR1
SENSOR SENSOR
MIN
POSN
M7415A1014 025-26250 M7415A1014 025-26250
24 VAC - Isolation Transformer
(WM # WP000019)
Honeywell M7415 Actuator
Without Interface Module
Honeywell M7415 Actuator With
Q769C1007 (WM # MS000204)
Interface Module Installed
Place Interface Module On
Terminals P1 and P
Figure 11: Honeywell Economizer Actuators Wiring Information
When the HVAC units that are being upgraded to
the Auto-Zone system are equipped with either the
Honeywell M7415 or M7405 economizer actua-
tors, an interface module and a isolation transformer
are required in order to connect and use the econo-
mizer outputs on the Auto-Zone system. The inter-
face module converts the Honeywell actuator from
0-5VDC operation to 0-10VDC operation. An iso-
lation transformer is also required for this installa-
tion to prevent voltage feedback to the control sys-
tem. The OE266-01 Actuator Interface Module kit is available from WattMaster. This kit includes both
the MS000204 Interface Module and a 24VAC Iso-
lation Transformer.
Warning: Both the interface module and a 24VAC
isolation transformer must be installed as shown
below when connecting to the Honeywell M7415
or M7405 actuator. Failure to install these com-
ponents as shown can result in serious damage to
the Auto-Zone controller board.