P70, P72, and P170 Series Controls for Low Pressure Applications Installation Instructions
4
•
Use the two inner holes with the Universal
Mounting Bracket (and screws supplied) when
mounting the control to a flat horizontal
surface. See
•
Mount controls with
NEMA 3R enclosures in a
level, upright position with the bellows and conduit
connection facing down. Ensure that all gaskets
are in place. Mounting controls with NEMA 3R
enclosures in any position other than upright and
level may trap water in the enclosure and
submerge internal components.
Wiring
P70, P72, and P170 controls for low pressure
applications are available with several switch options
and electrical ratings. Check the label inside the control
cover for model number, switch action, and electrical
rating. Check the wiring terminal designations on the
control switch block, and see the following applicable
wiring diagrams, when wiring the control. See Figure 4
through Figure 7 and Table 5 for switch actions and
models. Also see
!
WARNING: Risk of Electric Shock.
Disconnect or isolate all power supplies
before making electrical connections.
More than one disconnect or isolation
may be required to completely
de-energize equipment. Contact with
components carrying hazardous voltage
can cause electric shock and may result
in severe personal injury or death.
IMPORTANT:
Use copper conductors only. Make
all wiring connections in accordance with local,
national, and regional regulations. Do not exceed
the control’s electrical ratings.
IMPORTANT:
Use terminal screws furnished in the
switch block. Using other terminal screws will void
the warranty and may damage the switch.
Figure 3: Mounting the P70, P72, and P170 Low
Pressure Controls with NEMA 1 Enclosures
Figure 4: Typical Wiring for SPST Open-Low
Switch and Open-High Switch
(P70A, B, C, D and P170A, C, D Type Models)
Figure 5: Typical Wiring for SPDT Switch
(P70E and F Type Models)
