3M 3MWTS100 Installation And Operating Instructions Manual Download Page 9

Page: 9 / 32

Step 7)

Attach drain line to drain line fi tting. To prevent back pressure from reducing fl ow rate

below minimum required for backwash, the drain line MUST BE sized according to run
length and relative height. Be careful not to bend fl exible drain tubing sharply enough
to cause “kinking” (if kinking occurs drain line MUST BE replaced). Typical examples of
proper drain line diameters are:

1) 1/2” ID up to 15 ft. when discharge is lower than inlet.

2) 5/8” ID up to 15 ft. when discharge is slightly higher than the inlet.

3) 3/4” ID when drain is 25 ft. away and/or drain is installed overhead.

Some areas prohibit the use of fl exible drain lines. Check your local pluming code prior to

installation.

Step 8)

Position the drain line over the drain and secure fi rmly. To prevent back-siphoning of

sewer water, provide an air-gap of at least 2” or 2 pipe diameters between end of drain
hose and drain (Figure 3). DO NOT raise drain line more than 10 ft. above fl oor.

Step 9)

Connect one end of the included 3/8” black polyethylene tubing

to the brine fi tting located on the left side of the control valve.
Connect the other end to the safety brine valve elbow inside of
the brine well in the brine tank. To do so, remove the retaining
clip from the brine line fi tting on the control valve. The retaining
clip is holding a plastic insert sleeve and needs to be inserted
into the polyethylene tubing before installing the tubing into the
fi tting elbow and hand tighten only.

CAUTION: DO NOT use pli-

ers or wrenches to tighten as damage may occur and will void
the manufacturer’s warranty.

Step 10)

Install the overfl ow line to the brine tank overfl ow fi tting (Figure

2). The overfl ow discharge must be lower than the overfl ow fi t-
ting. DO NOT interconnect overfl ow line with valve drain line.

Step 11)

Make certain the bypass valve inlet and outlet knobs are in

“bypass” position. After all plumbing connections have been
completed, open main water shut-off valve and restore power
to well pump. Check for leaks and correct as necessary.

Step 12)

Plug the control valve power cord into 110v/60Hz, non-switched

power source. Program the control valve (refer to page 3-1).

NOTE:

Regeneration settings for the control valve are factory

preset. The control valve design permits adjustment of the salt
setting. This adjustment may be necessary when unusual op-
erating conditions exist, such as high concentrations of iron,
manganese or hardness and/or high fl ow rates or daily water
consumption.

Step 13)

Manually set the control to backwash position. Press and hold the

REGEN button for 3 seconds. The valve will advance to the backwash position. Unplug power cord to prevent the unit from advancing automatically.

Step 14)

Partially open the inlet knob on bypass valve (Figure 4). This will allow the unit to fi ll slowly from the bottom up, reducing air entrapment. Allow

the unit to fi ll slowly, failure to do so could result in loss of resin to the drain. Once a steady stream of water, with no air sputtering, is fl owing to
the drain, the inlet and outlet bypass knobs can be fully opened (refer to Figure 4).

Step 15)

Plug the power cord back into the power source. Press the REGEN button and wait for the valve to advance to the next regeneration position.

Repeat the process until the valve is in the Service Position (Time of Day will be on the display).

Step 16)

Refer to

Section 3: Control Valve Programming and Regeneration Instructions

, on how to set control valve for proper set up and regeneration

settings.

SPECIAL SERVICE INSTRUCTIONS:

Under normal circumstances removal of the valve should not be required. However, if it must be removed, disconnect the plumbing attached to the by-

pass valve fi rst. Then, rotate the valve head assembly to the left or counter-clockwise. Before attempting any disassembly, pressure should be relieved
by shutting off water to the system and opening a faucet. Upon reassembly, all o-rings should be lubricated with silicone grease. Reattach valve head
assembly by rotating to the right or clockwise until valve head assembly is seated to the tank hand tight. Reconnect the plumbing to the bypass valve.

2-3

Figure 3

Figure 4. BYPASS VALVE

BYPASS VALVE

INLET

OUTLET

CONTROL VALVE BODY

DRAIN LINE FLOW

CONTROL ASSEMBLY

BRINE LINE

ELBOW

INJECTOR COVER