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Step 4: Install the Drain Saddle Clamp
Drain saddle clamps are used to direct the reject water of a RO System to drain. The provided drain saddle clamp is designed for a
standard 1-1/2" OD drainpipe. Always inspect the condition of drainpipes before install and ensure they are not thin and frail. Drain
saddle valve should not be installed near the garbage disposal; installation must be on the opposite pipe and above the cross bar
pipe.
IMPORTANT: Drain saddle clamps are available with 1/4" and 3/8" tubing connections. Most air gap faucets require a 3/8" drain
connection, while non-air gap faucet systems use a 1/4" drain connection. Identify your drain lines and confirm that your drain
saddle clamp has the appropriate connection size.
IMPORTANT: For basement installations, drain saddle clamps may not be needed. Please see the APPENDIX at the end of this
section for additional information.
CAUTION: Never install the drain saddle valve near the garbage disposal drainpipe. Backpressure caused by either unit may back
water up into the system.
1) Place the small square black felt gasket, with a circle cut out of the middle,
on the inside of the drain saddle. Peel off the sticky tape backing and
adhere it to the inside of the drain saddle.
2) Position the drain saddle around the drain pipe at least 1-1/2" above the
nut of the P-trap, to allow for the removal of the P-trap if necessary. Once
in position, securely tighten the saddle clamp to the drainpipe.
3) Insert a 1/4" drill bit into the opening of the drain saddle and drill a hole in
the drainpipe. Be extremely careful not to drill through the other side of
the pipe.
4) Attach the black compression nut to the drain saddle, but do not tighten at
this time.
Step 5: Install the Tank Shut-Off Valve
Locate the John Guest® tank shut-off valve included in the Parts Packet shipped with your system.
1) Wrap the male pipe threads (clockwise direction) on the top
of the tank with Teflon tape.
2) Hand-tighten the tank shut-off valve to the top of the tank.
Be sure it is tight, but do not over-tighten.
3) Turn the tank valve to the closed position for now.
4) For optimal flow, position the tank within 10 feet of the
faucet.
5) Check the storage tank pre-charge pressure at the stem near
the bottom of the tank. Tank pressure, when empty, should
be 5 to 7 psi.
15
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