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SECTION 2: INSTALLATION

CAUTION

To reduce the risk associated with property damage due to water leakage:

•  Installation and use 

MUST

 comply with existing state or local plumbing codes.

• 

SHUT OFF FUEL OR ELECTRIC POWER SUPPLY TO WATER HEATER

 after water is shut off.

Step 1

Refer to Typical Installation Sequence (Figure 1) for correct placement 
of neutralizer in relationship to other water treatment devices. Installa-
tion location is critical because it may change the effectiveness of other 
products.

Step 2

Shut off all water at main supply.  On a private well system, turn off 
power to pump and drain pressure tank. Make certain pressure is re-
lieved from complete system by opening nearest faucet to drain system.  
Shut off fuel supply to hot water heater.

Step 3

Gently rock tank from side to side in order to make sure the gravel shipped inside the tank is spread across the bottom of the tank (APUN301 
only). Gravel may have shifted during shipping and handling. Locate the bypass valve and connect to the head assembly. Assemble the con-
nection fi ttings and connect to the bypass valve. Tighten the connection nuts on both the bypass and connections fi ttings by hand only. Close 
both the inlet and outlet valves on the bypass and leave in closed position until instructed otherwise.

CAUTION

To reduce the risk associated with property damage due to water leakage:

•  Installation and use 

MUST

 comply with existing state or local plumbing codes.

•  Mount system in such a position as to prevent it from being struck by other items used in the area of installation.
•   Install on a fl at/level surface. It is also advisable to sweep the fl oor to eliminate objects that could pierce the media tank.

To reduce the risk associated with property damage due to plugged water lines:

•  Pay particular attention to correct orientation of control valve. Water fl ow should match arrow on control valve. The inlet and outlet of other water treatment 

equipment products will vary depending on the control valve brand used.

Step 4

Refer to diagram (Figure 2) for recommended plumbing procedure. Cut main 
supply line as required to fi t plumbing to the inlet and outlet of neutralizer. Use 
thread tape on nipple threads, as most pipe thread pastes will cause deterio-
ration of plastic fi ttings. Hold nipples with wrench while attaching plumbing. 
DO NOT OVERTIGHTEN. If a boiler drain (not supplied) is to be connected, be 
sure to install it on the outlet side of the APUN Series Upfl ow Acid Neutralizer 
System. 

Figure 2.  RECOMMENDED PLUMBING PROCEDURE

1. APUN Head Assembly
2. Bypass Valve
3. Connection Fittings
4. Media Tank
5. 1” PVC Tee (Threaded Female)

1

4

2

5

Boiler Drain Attachment

3

Figure 1.  TYPICAL INSTALLATION SEQUENCE

2

Summary of Contents for APUN100-LM

Page 1: ...ON AND OPERATING INSTRUCTIONS APUN SERIES UPFLOW ACID NEUTRALIZERS MODELS APUN101 APUN201 APUN301 APUN100 LM APUN200 LM INSTR2195 0412 Installer please leave with homeowner Homeowner retain for future...

Page 2: ......

Page 3: ...old water system as an electrical safety ground a jumper must be used to ensure a sufficient ground connec tion across the Acid Neutralizer System installation piping refer installation to qualified p...

Page 4: ...stem cartridges plastic fittings or plastic plumbing On plastic fittings never use pipe sealant or pipe dope Use PTFE thread tape only pipe dope properties may deteriorate plastic Take care when using...

Page 5: ...the pH is approximately 5 5 6 0 units The neutralizer media dissolves when water with a low pH passes through The blend is used to take advantage of the fast vigorous pH adjusting capabilities of mag...

Page 6: ...d position until instructed otherwise CAUTION To reduce the risk associated with property damage due to water leakage Installation and use MUST comply with existing state or local plumbing codes Mount...

Page 7: ...in Open boiler drain and slowly open inlet valve to flush the APUN Series Upflow Acid Neutralizer System Discharge water from hose will be milky white due to fines generated during shipping and handli...

Page 8: ...through the tank remove the fill port cap and measure down to the top of the media The tank should be 2 3 full If not add media REPLENISHING MEDIA 1 Close inlet and outlet valves Open bypass valve so...

Page 9: ...onnect the plumbing attached to the bypass valve first Then rotate the fill port head assembly to the left or counter clockwise Before attempting any disassembly pressure should be relieved by shuttin...

Page 10: ...flow Distributor Tube 6236435 6236435 6236435 6236435 DF37 69 4 Media Calcium carbonate N A C 050P N A C 050P x4 C 050P x6 5 Gravel 1 4 x 1 8 N A QC 18 N A QC 22 QC 22 6 Funnel U1006 U1006 U1006 U1006...

Page 11: ...8 V3152 O ring 135 2 9 V3155 O ring 112 2 10 V3156 O ring 214 2 V3191 01 Vertical Adapter Assembly 6 5 6 5 4 1 4 1 1 2 3 3 1 2 Order No Description Quantity V3151 Nut 1 Quick Connect 2 V3150 Split Ri...

Page 12: ...tion shall be at 3M Purification Inc s option to replace or repair the Product or refund the purchase price of the Product This warranty does not cover labor The remedy stated in this paragraph is Cus...

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