Honeywell Economizer Actuators; Figure 11: Honeywell Economizer Actuators Wiring Information - York EZ Zone Upgrade Manual

036-21423-001 Rev. A (0602)

Honeywell Economizer Actuators

When the HVAC units that are being upgraded to
the Meridian 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 Meridian 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 2ZAI004700266 Actuator Interface Mod-
Honeywell M7415 Actuator
Without Interface Module
Warning:
Must Be Used For Connection To
Actuator Or Serious Damage Will
Result
!
Wiring 2ZAI004700266 Actuator Interface Module Kit To Zone Manager (Basic & Plus Systems)

Figure 11: Honeywell Economizer Actuators Wiring Information

Upgrade
2 4
V A
T R
C
T R
1
S E
N
S O
T
R
T 1
M
I N
P O
P
S N
P 1
Installing Interface Module To Honeywell M7415 Or 7405 Actuator
ANALOG
INPUTS Zone Manager
+12V
SAT
RAT
OAT
AUX1
AUX2
AUX3
GND
GND
EXHAUST
CONTACTS
N.O.
ANALOG
A1
OUTPUTS
A1
G
A2
G
TB2
24 VAC - Isolation Transformer
An Isolation Transformer
24VAC
ule kit is available from York. This kit includes both
the Interface Module and a 24VAC Isolation Trans-
former.
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 Meridian controller board.
Honeywell M7415
Actuator With Q769C1007
Interface Module Installed
Place Interface Module On
Terminals P1 and P
Q769C1007 Interface Module
+
P1
-
P
T1
T
TR
24VAC
TR1
EZ Zone/Meridian
2 4
V A
T R
C
T R
1
S E
N
S O
T
R
T 1
Honeywell Series M7415
Or M7405 Actuator
23