Johnson Controls P70 Serie Manual Del Usuario página 6

Table 2: Standard P70, P72, and P170 Control Models for High Pressure Applications
Model Switch Action
Number
Condenser Fan Cycling Control Models (for Noncorrosive Refrigerants)
SPST
P70AA-118
Open-Low
DPST
P72AA-27
Open-Low
SPST
P170AA-118
Open-Low
P70CA-2*
SPST
P70CA-3* Open-High
P70DA-1*
4-Wire, 2-Circuit
Line-M1 Close-High
Line-M2 Open-High
P70KA-1*
P72CA-2*
DPST
Open-High
P72DA-1*
P170CA-3*
SPST
Open-High
P170DA-1*
4-Wire, 2-Circuit
P170KA-1* Line-M1 Close-High
Line-M2 Open-High
SPST
P70AA-119
Open-Low
P70CA-5*
SPST
Open-High
P70DA-2*
Continued on next page . . .
6 P70, P72 and P170 Series Controls for High Pressure Applications Installation Instructions
Range
Psig (kPa)
100 to 400
psig
(690 to 2758)
100 to 400
psig
(690 to 2758)
All-Range Control Models (for Noncorrosive Refrigerants)
50 to 500
(345 to 3448)
Ammonia-Compatible Models
50 to 300
50 to 500
(345 to 3448)
Differential Pressure
Connection
Psi (kPa)
Minimum 35 36 in. Capillary with
(241) 1/4 in. Flare Nut
Maximum 200
(1379)
Minimum 35
(241)
Maximum 200
1/4 in. Male
(1379)
Flare Connector
Minimum 60 1/4 in. Male
(414) Flare Connector
Maximum 150
(1034)
Manual Reset
Lockout
36 in. Capillary with
1/4 in. Flare Nut
Minimum 60
(414)
Maximum 150
(1034)
manual Reset
Lockout
Minimum 60
(414)
Maximum 150
(1034)
1/4 in. Male
Flare Connector
Manual Reset
Lockout
Minimum 20
(138)
Maximum 120
(827)
Minimum 60 1/4 in. SS
(414) Female NPT
Maximum 150
(1034)
Manual Reset
Lockout
Maximum Working
Pressure (MWP)
Psi (kPa)
475
(3275)
525
(3620)
525
(3620)