7.3 The WM -Control box has (4) mounting holes.
WM -Control Box weighs only 8 pounds. #12 screws
should hold the WM -Control Box in place. A wall
anchor device should be used to ensure the mounting
screws do not pull out of a wall.
8.0 Drain line connection:
The drain line should be installed accordance to the
local and state plumbing codes.
8.1 The unit may be plumbed to the drain using the
3/8” ID plastic tubing (which is included) or can be
adapted for a hard plumbed using the PVC bell
reducer. See drawing below for the correct parts.
8.2 Soft plumbed drain line. The WM has been
tested at the factory with soft drain line. You will find
the plastic connector already installed on the outlet
port of the Drain Control Needle Valve. Loosen the
compression nut on the plastic connector and insert the
3/8” OD tubing through the nut and into the connector.
Hands tighten compression nut then tighten with a
wrench. Run 3/8” tubing to a floor drain or sink drain
securing it along the way. Note: Air Gap is required
in the United States for all drain connections.
8.3 Hard plumbed drain line. Remove the plastic
connector from the outlet port of Drain Control Needle
Valve. Teflon tape the male pipe thread of the ¼”
Brass Hex Nipple and thread into the outlet port of
Drain Control Needle Valve.
Thread PVC Bell Reducer on to the ¼” Brass Hex
Nipple. The Hard drain line maybe run in either ½”
PVC or Copper pipe. Secure drain line according to
local and state plumbing codes.
NOTE: Use back up wrench then tighten all
connections or fittings.
9.0 Permeate line connecti on: The WM -PT-series
comes with 15 feet of ¼” OD Blue Poly Tubing.
Additional tubing can be added if needed.
Note: For future servicing of equipment down
stream a ball valves maybe plumbed before and
after pressurized storage tank.
9.1 Pressurized Storage Tank. For proper operation
of the WM -PT the recommended air pressure setting
in the pressurized storage tank then empty of water is
as follows:
2 to 10 gallon size tanks: 5 psi
23 to 46 gallon size tanks: 12 psi
USE only pressurized storage tank designed for
RO water.
10.0 Connection of feed water to WM-PT unit.
The water supply feeding into the WM-PT unit
must have a minimum feed water pressure of 35 psi
or 2.4 bars with a flow rate of 2.33 GPM for proper
operation.
10.1 Inlet connection port size.
WM -PT unit inlet port has been reduced to ½” Female
pipe threads at the factory. This bushing may be
removed for plumbing greater than ½” in size. The
maximum inlet port size for the WM -PT unit is 1”
female pipe, threads. Only use Teflon plumbing
tape on all connections into the WM-PT.
10.2 Pre-Ball Valve.
The WM -unit does not include a ball valve on the
inlet. It is recommend that a ball valve be installed on
the inlet of pre-filters for future servicing.
11.0 Electrical connection of WM-Module to WM-
control box.
All electrical connection between module and
control box are color-coded. Do not connect WM-
control box into power source at this time.
Back Pressure Gauge 0-
Needle Valve
Needle Valve
Valve
Gauge
Tubing
Switch
TSO
Settings: 40-
To Pressurized Storage tank
