How to Install Your Pure Water Midi Classic Automatic Water Distiller

Midi Classic Water Distiller with StandInstalling your new Midi Classic Water Distiller is easy and can be done by the homeowner or a plumber (refer to local codes before self installation).  Before you begin the install, select a location that will be level and also close to the water supply and an appropriate outlet, as well as in a well ventilated area.  This might be in your basement, the garage (if you live in an area where temperatures do not drop below freezing), or your kitchen, given that there is enough room.  Note that if you want to have distilled water transported to a faucet or refrigerator, you will need to purchase a pump kit.  You can set these distillers on our custom made stands, your countertops, strong shelves or on the floor as long as there is something underneath holding the product at least 8 inches from the floor.

Note: When connecting tubing, insert it fully, and pull on it to make sure it is connected tightly without leaks.

Note: Our automatic units can weigh up to 42 lbs. Please be careful moving this distiller.

Before Installing your Distiller

remove and identify all parts kits as listed in your manual.  With a pliers, remove the black plug in the fitting marked “Distilled Water Outlet”. If you are not installing a demand pump, insert the grey plug, located in the parts kit bag, into the fitting, Pump installation information is discussed later in the manual.  Remove the wire tie inside the boiling tank used to restrain the float during transit.

Automatic Water Distiller Installation

Automatic Water Distiller Installation

Prepare to Connect the Incoming Water Line

Notes and Cautions:

  • The use of softened water for the raw water supply is recommended to minimize scale build-up in the boiling tank and drain valve.
  • The Midi-Classic comes standard with a saddle tapping valve. In some areas a saddle tapping valve may not be permitted. In such instances, contact your authorized Pure Water Distributor for other water line connection options.
  • Do not plug the unit into the power source until instructed to do so.
  • CAUTION: DO NOT use a hot water line for your supply line.
  • CAUTION: DO NOT turn the saddle tapping valve handle before or during installation. Be sure the piercing lance does not protrude beyond the rubber gasket. Failure to do this may result in damage to the piercing needle.

Hooking Up the Incoming Water Line:

  1. Locate the items in the parts kit bag as identified as “Incoming Water Hook-Up”.
  2. Turn the household water supply OFF.
  3. Remove the blue plug in the fitting marked “Raw Water Inlet”.
  4. Install the 1/4” speedfit elbow onto the fitting. Pull to test.

5a. For installation on copper pipes:

  1. Assemble the saddle tapping valve on the cold water pipe so the outlet is in a convenient direction.
  2. Tighten the screws evenly so the brackets are parallel. Tighten firmly, but do not over tighten.
  3. Connect the 25’ of 1/4” plastic tubing to the saddle tapping valve.
  4. Cut the required length of tubing to run from the saddle tapping valve to the distiller, but make sure you coil a minimum of 8 feet of tubing behind the Midi Automatic Water Distiller to allow it to be moved away from the wall for cleaning or service.
  5. Cut a one foot piece of 1/4” tubing off the end of the tubing to allow the strainer to be installed.

Note: You may also use a piece of tubing that was cut in step d.

  1. Install the one foot piece of tubing into the elbow on the Raw Water Inlet. Pull to test.
  2. Install a 1/4” compression nut onto the tubing coming from the distiller.
  3. Install the tubing onto the strainer. Make sure the tubing is inserted fully into the strainer and the flow is in the correct direction. Tighten the nut firmly.
  4. Install a 1/4” compression nut onto the tubing coming from the saddle tapping valve and connect to the inlet stem of the strainer. Tighten firmly.
  5. Turn the saddle tapping valve handle clockwise until you feel it is firmly seated.

Note: You have now pierced the water supply line and the valve is closed.

  1. Turn the handle counterclockwise to open the valve. Turn on the household water supply and check the connections for leaks. Tighten where required.

5b. For installation on brass, steel, or PVC pipes:

Note: Make sure the water supply is turned off and drain the line. Make sure your are using the cold water line.

  1. Drill a 3/16” hole in the pipe. Use a hand drill to avoid shock hazard.
  2. Turn the saddle tapping valve handle to expose the lance beyond the rubber gasket no more than 3/16”.
  3. Assemble and place the body of the valve over the hole so the lance fits into the hole. Make sure the outlet is in a convenient direction.
  4. Tighten the screws evenly so the brackets are parallel. Tighten firmly, but do not over tighten.
  5. Turn the saddle tapping vale handle clockwise to close the valve.
  6. Connect the 25’ of 1/4” plastic tubing to the saddle tapping valve.
  7. Cut the required length of tubing to run from the saddle tapping valve to the distiller, but make sure you coil a minimum of 8 feet of tubing behind the distiller to allow it to be moved away from the wall for cleaning or service.
  8. Cut a one foot piece of 1/4” tubing off the end of the tubing to allow the strainer to be installed. Note: You may also use a piece of tubing that was cut in step d in the previous section.
  9. Install the one foot piece of tubing into the elbow and pull to test.
  10. Install a 1/4” compression nut onto the tubing coming from the distiller.
  11. Install the tubing onto the strainer. Make sure the tubing is inserted fully into the strainer and the flow is in the correct direction. Tighten flow the nut firmly.
  12. Install a 1/4” compression nut onto the tubing coming from the saddle tapping valve and connect to the inlet stem of the strainer. Tighten firmly.
  13. Turn the handle counterclockwise to open the valve. Turn on the household water supply and check the connections for leaks. Tighten where required.

Installing the Boiling Tank Drain Valve

  1. Remove the blue plug from the fitting marked “Boiling Tank Drain” on the back of the unit. Note: Ensure that Teflon tape has been applied to the threads of the fitting on the drain valve.
  2. Locate the drain valve from the parts kit bag and install it onto the boiling tank drain fitting . Tighten using an adjustable wrench. Note: Tighten until the outlet is pointing down.
  3. Insert the drain extension tube into the drain valve. Note: Make sure the compression sleeve is on the drain tube. 4. Holding the tube in place, tighten the nut with a 5/8” wrench until the tube is secure. See figure 10. 5. Loosen the nut slightly so the extension tube can be rotated, yet is secure.

Installing the Storage Tank Faucet

  1. Locate the faucet and rubber washer in the parts kit bag. Install the rubber washer onto the stem of the faucet.
  2. Remove the red plug in the fitting on the front of the Midi-Classic.
  3. Install the faucet into the fitting by rotating the faucet clockwise until tight and the sight glass is in the proper vertical position. Note: Do not twist the faucet by the sight glass. It is fragile.

Connecting the Power Cord

Note: On some 240V units, the power cord may be sold separately and not included in the part kit bag. Ensure the Power Switch is turned to the OFF position.

  1. Locate the power cord in the parts kit bag. Install the female end of the power cord into the outlet on the back of the unit marked “Power Cord Plug”.

Starting Up Your Automatic Water Distiller

Notes and Cautions: Note: This system must be fully grounded at all times. The electrical receptacle : you use must be a fully grounded, single phase, AC 115-120 volt, 15 amp minimum circuit. If a two-pronged wall receptacle is encountered, it is the personal responsibility and obligation of the customer to contact a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly grounded. If an extension cord must be used, it should be a 3-wire, 15-amp minimum cord.

CAUTION: Do not, under any circumstances, cut or remove the round grounding prong from the electrical plug.

Steam Sterilizing

Steam sterilization is a method of disinfecting your distiller and storage tank. It’s done by allowing the unit to operate without the fan, thus allowing steam to pass through the system and into the storage tank. To steam sterilize your Midi-Classic: Note: Remove the red caps on the condensing coil outlet and storage tank inlet.

1. Locate the 12” piece of silicone tubing from the parts kit bag. Place one end on the condensing coil tube and one end on the tube to the storage tank.

2. Plug the distiller power cord into the power supply.

3. Open the storage tank faucet and lock open. Place a bucket underneath to catch the condensation.

4. Turn the Fan Switch to “Sterilize”. This switch is located under the top plate.

5. Turn the Power Switch to ON.

6. Remove the boiling tank lid and make sure the boiling tank is filling with water. When the water stops, the heating element will come on.

7. Replace the boiling tank lid. Tighten securely.

8. With the heating element operating and the fan switch set to “Sterilize”, the unit is steam sterilizing. Allow the unit to steam sterilize for 45 minutes to 1 hour.

9.  Turn the Power Switch to OFF.

10. Allow the unit to cool for approximately 15 minutes. Close the storage tank faucet.

11. Remove the silicone tubing used for steam sterilization. Keep this tubing for future use. If you purchased a demand pump, install it now by following the instructions included with the pump kit.

Connecting the Post Filter To hook-up the Carbon Post Filter:

  1. Locate the post filter and two elbows in the parts kit bag.
  2. Remove the two yellow plugs in each end of the post filter by pushing on the blue collets. Note: You may need a needle nose pliers to get the plugs out.
  3. Insert an elbow into each end of the post filter. Insert fully.
  4. Install the post filter onto the condensing coil and storage tank outlet tubes.

Insert fully and pull to test.  The flow direction is from the coil to the storage tank. The unit is now ready for operation. Turn the Power Switch to “On”, the Fan Switch to “Distill”, and the unit will operate automatically and fill the storage tank with distilled water. This will take approximately 18 hours. The unit will then monitor your water usage and restart as you draw water from the storage tank. Discard the first batch of distilled water.

If you are installing a demand pump, make sure you test the connections before discarding the first batch.  The pump will not operate until there is enough water in the storage tank.

Do NOT use the demand pump to discard the first batch of distilled water. The storage tank will hold approximately 4.5 gallons of distilled water. You can remove approximately two gallons of water before the unit will restart.