P70, P72, and P170 Series Controls for Dual Pressure Applications Installation Instructions
2
Table 1: Standard Model P70, P72, and P170 MICRO-SET® Dual Pressure Controls for Non-Corrosive
Refrigerants
Model Code
Number
Switch
Action
Low Pressure Side
psig (kPa)
High Pressure Side
psig (kPa)
Pressure
Connector
Limited
Knob
Adjustment
Range Differential Range Differential
(Non-
Adjustable)
P70LB-6
1
1. Control models with high pressure side (only) that are UL Listed as Refrigeration Pressure Limiting Controls.
SPST 12 in. Hg to
80 psig
(-41 to 552)
Min 5 (34)
Max 35 (241)
100 to 500
(690 to 3,447)
Fixed
Approximately
65 (448)
36 in. Capillary
with 1/4 in.
Flare Nut
Low CUT OUT
P70MA-18
1
Lockout
Requires
Manual Reset
None
P70SA-1
1
Two
Independent
SPDT
Fixed at
65 (448) or
Lockout
Requires
Manual Reset
P170LB-6
1
SPST Fixed
Approximately
65 (448)
1/4 in. Male
Flare
Connector
Low CUT OUT
P170MA-18
1
Lockout
Requires
Manual Reset
None
P170SA-1
1
Two
Independent
SPDT
Fixed at
65 (448) or
Lockout
Requires
Manual Reset
Table 2: Standard Model P70, P72, and P170 All Range Dual Pressure Controls for Ammonia
Model Code
Number
Switch
Action
Low Pressure Side
psig (kPa)
High Pressure Side
psig (kPa)
Pressure
Connector
Limited
Knob
Adjustment
Range Differential Range Differential
(Non-
Adjustable)
P70LA-2
1
1. Control models with high pressure side (only) that are UL Listed as Refrigeration Pressure Limiting Controls.
SPST 20 in. Hg to
100 psig
(-68 to 690)
Min 7 (48) Max
50 (345)
100 to 500
(690 to 3,447)
Fixed
Approximately
65 (448)
1/4 in. Female
NPT
Connector
None
P70MA-2
1
Lockout
Requires
Manual Reset