Johnson Controls Serie Instrucciones De Instalación página 3

Table 3: Standard Model P70, P72, and P170 All Range Dual Pressure Controls for Non-Corrosive
Refrigerants
Model Code Switch
Number Action
1 SPST
P70LB-1
1
P70MA-1
P70NA-1
1 DPST
P72LA-1
1
P72LB-1
1
P72MA-1
1
P72NA-1
1 SPST
P170LB-1
1
P170MA-1
P170NA-1
1. Control models with high pressure side (only) that are UL Listed as Refrigeration Pressure Limiting Controls.
Installation
Dimensions
See Figure 1 and Figure 2 for dimensional information.
P70, P72, and P170 Series Controls for Dual Pressure Applications Installation Instructions
Low Pressure Side
psig (kPa)
Range Differential
20 in. Hg to Min 6 (41)
100 psig Max 50 (345)
(-68 to 690)
Fixed (Manual
Reset)
Min 7 (48)
Max 50 (345)
Fixed (Manual
Reset)
Min 7 (48)
Max 50 (345)
Fixed (Manual
Reset)
High Pressure Side
psig (kPa)
Range Differential
(Non-
Adjustable)
100 to 500 Fixed
(690 to 3,447) Approximately
65 (448)
Lockout
Requires
Manual Reset
Fixed
Approximately
65 (448)
Lockout
Requires
Manual Reset
Fixed
Approximately
65 (448)
Lockout
Requires
Manual Reset
Pressure Limited
Connector Knob
Adjustment
36 in. Capillary Low CUT OUT
with 1/4 in.
Flare Nut
None
None
Low CUT OUT
None
1/4 in. Male Low CUT OUT
Flare
Connector
None
3