HD / HDL Valves & Systems Service Manual
Hankscraft Runxin, LLC 300 Wengel Drive 608.524.9465 hrh2o.com [email protected]
8
Plumbing and Mechanical Setup
•
Complete all plumbing according to local, state, and federal plumbing codes.
o
A 1/2" (13mm) minimum drain pipe should be used. However, if the backwash flow rates
exceed 7gpm or the length exceeds 20 feet (6m) then a 3/4" (19mm) drain pipe should be
used.
o
There must be an air gap between the drain line and the drain to prevent siphoning of
contaminated water back into the resin tank.
•
Use only Teflon tape on the drain fitting.
•
Solder joints should be completed prior to connecting piping to the valve. Solder joints near the
drain must be done before connecting the Drain Line Flow Control fitting (DLFC). Leave at least 6"
(152mm) between the DLFC and solder joints when soldering pipes that are connected on the
DLFC. Failure to do this could cause interior damage to valve. The valve manufacturer is not
responsible for damage incurred during installation.
•
When turning threaded pipe fittings onto plastic fitting, take precaution not to cross thread or over
tighten.
•
Ensure the unit is installed with enough space for operation and maintenance.
