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5) Open the manifold high and low pressure valves to charge the system using
the recommended initial charge.
6) Close the manifold high and low pressure valves. Turn on the power to start
the system.
7) Check the following temperatures and pressures.
5. Adjusting and Completing the Installation
1) Checking pressure control settings
I.
The adjustable
pressure control
Suction pressure setting: Cut out=5 psig; Cut in=25 psig; Differential=20 psig
Head pressure setting: Cut out=230 psig; Cut in=150 psig; Differential=80 psig
It is necessary to adjust the setting in the field to reach the correct cycle time.
A. P70 Single/Dual Control
B. PS2 Dual Control
Fig. 11 Adjustable Pressure Control