Liberty Pumps Pro680 Serie Manual De Instalación página 5

Installation and Connections
A. Discharge: Using an adapter, connect the discharge pipe to
the threaded 2" or 3" port provided on the cover.
Note: The ProVore680 system is supplied with dual 2"
discharge outlets. Do not increase the pipe size above 2" as
adequate flow rates may not be achieved for proper
operation. Discharge sizes may be reduced to 1-1/2" or
1-1/4". Contact Liberty Pumps with questions regarding
proper pipe sizes and flow rates.
Install the remaining discharge line. A union should be
installed just above the cover to facilitate pump removal.
VENT
Figure 3. Cover–680-Series
Figure 4. Cover–1100-Series
A check valve is required after the union to prevent the
backflow of liquid after each pumping cycle. A gate or ball
valve should follow the check valve to allow periodic cleaning
of the check valve or removal of the pump. The remainder of
the discharge line should be as short as possible with a
minimum number of turns, to minimize friction head loss.
Contact Liberty Pumps or other qualified person if there are
questions regarding proper pipe size and flow rates.
Figure 5 shows a typical installation. Variations may apply to
actual installation.
8337000F
OPTIONAL
INLET
NAMEPLATE
2" NPT
DISCHARGE
B.
PORTS
INSPECTION/
ACCESS COVER
CORD ENTRY
2" OR 3"
DISCHARGE
2" OR 3" VENT
Copyright © Liberty Pumps, Inc. 2018 All rights reserved.
Ball valve
Duplex
Control
System
Figure 5. Typical Installation (Pro680-Series shown)
Vent: A 2" or 3" vent connection is provided on top of the
1100-Series unit. The P680-Series' vent is in the tank. The vent
must be piped to the existing building vent, or extended
outside on its own standpipe. The vent size should be in
accordance with applicable codes, but not less than the
discharge size. See Figure 6 for an example of venting
through the inlet pipe as an alternative solution.
VENT
WATER
CLOSET
Figure 6. Example Venting–Alternative Method
Check valve
Vent
Union
Discharge
Use no-hub
style connector
4" inlet pipe
SYSTEM
DISCHARGE
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