25
1.800.627.4499
Premium Commercial Controls
ERV
UNIT CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
with offset
no offset
19.2 K
9.6 K
38.4 K
57.6 K
CAREL
Modbus
ON
OFF
Address
Ext.
Prot
Baud
Address
Ext Baud Prot
EXPANSION MODULE
X3-27
X3-23
X3-21
IAQ-W OR IAQ-D SENSOR
P/N 131308 OR 131307
4.2.5 Differential Pressure Duct or Room Pressure Sensor
The pressure transmitter with a display screen (below right) is an optional accessory and would
be installed in a duct to run the fan to meet a specific duct pressure. These sensors provide a
0–10VDC signal scaled as specified in the Duct Pressure scaling screen.
FIGURE 4.2.3 PRESSURE DIFFERENTIAL TRANSMITTER (TYP)
FIGURE 4.2.4 ELECTRICAL PRESSURE DIFFERENTIAL
TRANSMITTER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
with offset
no offset
19.2 K
9.6 K
38.4 K
57.6 K
CAREL
Modbus
ON
OFF
Address
Ext.
Prot
Baud
Address
Ext Baud Prot
EXPANSION MODULE
X3-25
X3-27
DUCT PRESSURE SENSOR
P/N 131309
X3-21
NOTE: When wiring
sensor, do not wire
directly to the
expansion module;
wire to the X3 terminal
block, see Figure 4.2.0.
NOTE: When wiring
sensor, do not wire
directly to the
expansion module;
wire to the X3 terminal
block, see Figure 4.2.0.
