Piping
Use at least 2" IPS PVC (51mm) pipe. Increase size if a
long run is needed.
To avoid strains on the Max-E-Pro
®
High Efficiency
Pool and Spa Pump, support both suction and
discharge pipes independently. Place these supports
near the pump.
To avoid a strain left by a gap at the last connection,
start all piping at the pump and run pipe away from the
pump.
Never use a suction pipe smaller than pump suction
connection.
To avoid airlocking, slope suction pipe slightly upward
toward the pump.
NOTICE: To prevent flooding when removing pump for
service, all flooded suction systems must have gate
valves in suction and discharge pipes.
Fittings
Fittings restrict flow; for best efficiency use fewest
possible fittings.
Avoid fittings which could cause an air trap.
Pool fittings must conform to International Association
of Plumbing and Mechanical Officials (IAPMO)
standards.
Use only non-entrapping suction fitting or double
suction.
SUCTION
REQUIREMENTS
Pump suction is hazardous and can trap
and drown or disembowel bathers. Do not use or
operate swimming pools, spas, or hot tubs if a suction
outlet cover is missing, broken, or loose. Follow the
guidelines below for a pump installation which minimizes
risk to users of pools, spas, and hot tubs.
Entrapment Protection
The pump suction system must provide protection
against the hazard of suction entrapment or hair
entrapment/entanglement.
Suction Outlet Covers
All suction outlet covers must be maintained. They must
be replaced if cracked, broken, or missing.
See below for outlet cover certification requirements.
All suction outlets must have correctly installed, screw-
fastened covers in place.
Testing and Certification
Suction outlet covers must have been tested by a
nationally recognized testing laboratory and found to
comply with the latest ASME/ANSI Specification for
Suction Fittings For Use in Swimming Pools, Spas, Hot
Tubs, and Whirlpool Bathtub Applications.
Outlets Per Pump
Provide at least two hydraulically balanced main drains,
with covers (See Figure 2), for each swimming pool
pump suction line. The centers of the main drains
(suction fittings) must be at least three feet apart.
The system must be built so that it cannot operate with
the pump drawing water from only one main drain (that
is, there must be at least two main drains connected to
the pump whenever it is running). (See Figure 2).
However, if two main drains run into a single suction
line, the single suction line may be equipped with a
valve which will shutoff both main drains from the pump
(see Figure 2).
More than one pump can be connected to a single
suction line as long as the requirements above are met.
At Least
3 Feet
Suction Outlet
(Main Drain)
Suction Outlet
(Main Drain)
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
Pump
Valves OK between
pump and Tee
No valves between
Tee and Main Drains
Figure 2 – Recommended pump suction layout.
3
MAX-E-PRO
®
High Efficiency Pool and Spa Pump Installation and User’s Guide
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