27
EN
Specifications are subject to change without notice.
© 2022 Mitsubishi Electric US, Inc.
Specifications are subject to change without notice.
© 2022 Mitsubishi Electric US, Inc.
13.4. Changing blower external static pressure
The air handler is equipped with an adjustable static pressure
setting. The available settings are shown in the table below.
Model
Available ESP [in. WG]
PVFYP08
0.30
0.50
0.80
PVFYP12
0.30
0.50
0.80
PVFYP18
0.30
0.50
0.80
PVFYP24
0.30
0.50
0.80
PVFYP30
0.30
0.50
0.80
PVFYP36
0.30
0.50
0.80*
PVFYP42
0.30
0.50
0.80
PVFYP48
0.30
0.50
0.80
PVFYP54
0.30
0.50
0.80**
*PVFY-P36 in Downflow External Static pressure: 0.60
**PVFY-P54 in Downflow External Static pressure: 0.70
The air handler will be set to 0.50 ESP from the factory.
The blower static pressure setting can be changed by changing the
dip switches SWA & SWC. Vertical, Horizontal Right, and Horizontal
Left Switch C will always be in the “1” position. When the air handler
is installed in the Downflow position, Switch C needs to be in the “2”.
position.
External Static Pressure
Switch A
0.3 in. WG
(75 Pa)
0.5 in. WG
(125 Pa)
(
Factory Setting)
0.8 in. WG
(200 Pa)
Switch C
Switch C
Vertical,
Horizontal Right,
Horizontal Left
(
Factory Setting)
Downflow
Locate the CN31 connector in the upper right-hand corner of the
circuit board. Carefully remove the connector with the jumper from
the board. Cut the jumper on the CN31 connector and wire a
normally closed safety float switch across these wires.
Carefully reinstall the connector back onto the board
Upper right corner
of circuit board
CN31
Normally Closed
Float switch
SWA
SWA
SWA
1
2
3
1
2
3
1
2
3
2
1
1
2
2
1
1
2
External Static Pressure
Switch A
0.3 in. WG
(75 Pa)
0.5 in. WG
(125 Pa)
(
Factory Setting)
0.8 in. WG
(200 Pa)
Switch C
Switch C
Vertical,
Horizontal Right,
Horizontal Left
(
Factory Setting)
Downflow
Locate the CN31 connector in the upper right-hand corner of the
circuit board. Carefully remove the connector with the jumper from
the board. Cut the jumper on the CN31 connector and wire a
normally closed safety float switch across these wires.
Carefully reinstall the connector back onto the board
Upper right corner
of circuit board
CN31
Normally Closed
Float switch
SWA
SWA
SWA
1
2
3
1
2
3
1
2
3
2
1
1
2
2
1
1
2
