2
Note
These controls are designed for use only
as operating controls. Where an operating
control failure would result in personal injury
or loss of property it is the responsibility of
the installer to add devices or systems that
protect against, or warn of, control failure.
Manual reset models are possible as optional
construction for quantities only.
Mounting
Mounting can easily be done with a mounting
bracket 271-51L (order separately) or directly
on a surface. Mounting holes 4.5 mm diam. and
M4 holes are provided.
Adjustment
Adjustment of range and differential can be done
by turning the hexagonal range screw and
differential screw. These screws can also be
locked by a lockplate accessory (KIT023N600)
(order separately).
The range scale indicates high switch point
(contacts A - B open, A - C closed). Deduct
differential to obtain low switch point.
Range
Differential (bar)
(bar)
0 - 1
0.16 - 0.55
0.2 - 4
0.25 - 0.80
-0.2 - 10
1 - 4.5
1 - 16
1.3 - 2.5
3 - 30
3 - 12
0.2 - 4
Manual reset
4 - 16
-0.2 - 10
1 - 4.5
Catalogue Section 6
Type number selection table
Max. bellows
pressure (bar)
3.5
8
15
25
33
8
25
15
Note: 1 bar = 100 kPa ≈ 14.5 psi
Contact function
Fig. 1
A - B open on pressure increase.
A - C close simultaneously.
Optional construction note
If your requirements are not in the type number
selection table, then please contact your
Johnson Controls representative.
Repair and replacement
Repair is not possible. In case of an improperly
functioning control, please check with your
nearest supplier. When contacting the supplier
for a replacement you should state the
type/model number of the control. This number
can be found on the data plate or cover label.
Approved acc. To
PED 97/23EC Cat IV
Yes
Yes
Yes
Yes
No
Yes
Yes
No
P48
Issue 03/06/2003
Order number
P48AAA-9110
P48AAA-9120
P48AAA-9130
P48AAA-9140
P48AAA-9150
P48BEA-9120
P48BEA-9140
P48AAA-9230
© 2003 Johnson Controls Inc.
Code No. PD-P48-E
