Product Overview

P20
Issue 9708
© 1997 Johnson Controls Inc.
Catalogue Section 6
Order No. PD
-
P20-E
3
T
ype number selection
In the model number the following information is given:
P20EA-
9650K
E
= Auto reset
F
= Manual reset low pressure types
G
= Manual reset high pressure types
A
= Basic models (only adjustable with special wrench)
B
= Universal replacement models ( field (screwdriver) adjustable types)
Pressure connection style (see page 6)
1
= style 45A
5
= style 50, 51 or customer special
6
= style 13
9
= style 34
Pressure differential. This is indicated in the “Differential Specification”
matrices (see page 4). The differential code is indicated by two characters.
Each differential code compares with a digit as indicated below.
This is the model number suffix that indicates the selected switch point (see
“Differential Specification” matrices, page 4 - horizontal line). The figures given
at the intersection of this horizontal line and the selected differential column
indicates the pressure differential that belongs to the selected switch point.
The model suffix is indicated in the “Differential Specification” matrices (see
page 4).
The above mentioned model P20EA-9650K indicates:
Auto reset
Basic model (special adjustment tool WRN12-1 needed)
Connection style 13
Differential AM equals 1.2 bar
High switch point 16 bar.
HP models
AM
BM
CM
DM
5
6
7
8
LP models
AL
BL
CL
DL
1
2
3
4
Differential code
Differential digit in model number