MDX-R3 VGB COMPLIANT DEBRIS DRAIN
STANDARD POOL DESIGN
DUAL DRAIN
SDX2
ENLARGED SUCTION ELEMENT
SECOND DRAIN
ANY ORIENTATION
75mm TEE
63mm OR LARGER
CIRCULATION LINE
75mm MINIMUM
Design Flow Rate = 132 GPM (500 LPM)
Maximum GPM (LPM) = 132 (500)
Velocity at 132 GPM (500 LPM) = 1.294 FPS (.39 MPS)
For technical assistance call
1-800-621-5886 or contact your
regional representative.
MDX-R3 SYSTEM DESIGN
These MDX-R3 instructions provide two methods to choose from, with additional methods for specific jurisdictions,
(California specifically but not limited to that state). Your local codes may require additional safety measures. Paramount
Pool & Spa Systems and its representatives cannot recommend or endorse installation methods other than those provided
in these MDX-R3 instructions.
Maximum Pump Size:
MDX-R3 is rated for a maximum of 132 GPM (500 LPM). While system flow rate will vary with
pump size and the Total Head Loss for a given system, virtually any modern pump is capable of
exceeding this limit, therefore it is the responsibility of the system designer to make sure it is not
possible to exceed 132 GPM (500 LPM).
NOTICE
In the event of one suction outlet being completely blocked, the remaining suction outlets serving that system shall have a
flow rating capable of the full flow of the pump(s) for the specific suction system.
MDX-R3 and SDX must be installed in accordance with Paramount’s written instruction manual,
and in conformity with applicable Federal, State, Local and Swimming pool industry building
and safety codes.
WARNING
Plumbing of the included enlarged suction element (13” of 4” pipe) to the 4" port
of the MDX-R3 is required.
After the enlarged suction element, the included reducer
adapter may then be used to reduce the pipe size to 2½”. A 3” coupler may be attached to
the outside diameter of the reducer or a 4” coupler directly to the enlarged suction element
for systems where the flow through the MDX-R3 is intended to exceed 90 GPM.
Use of 2½”
pipe minimum throughout the suction side of the system is strongly encouraged for
optimum performance.
For your convenience, Paramount Pool & Spa Systems includes the
enlarged suction element, and the reducer adapter with the MDX-R3. To order separately, please
see page 12 for the part number.
NOTICE
NOTICE
The use of two 45˚ in place of a 90˚ allows for the best debris removal and minimizes large debris
from getting caught in the line.
