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3

5. 

Turn off the pump and isolate the equipment 

(to prevent 

drain ing the pool) by plugging all lines running from the pool 

to the equipment, closing in-line valves, and/or using the 

winterizing line plugs to seal off the skimmer pipe and all 

return inlets.  You are now ready to insert the purifier into the 

pool’s lines. 

6. 

Disconnect the hose

 on the outlet side of the filter. Connect 

it to the outlet side of the purifier.

7. 

Install a new section of connector hose

 between the outlet 

side of the filter and the inlet side of the purifier. Use the hose 

clamps from the parts bag to secure the two ends of the new 

hose.

NOTE

  If your pool uses large diameter hose (1-1/2”) cut 

off the ends of the adapter (the 1-1/4” stubs) as 

marked on each adapter, so they do not block the 

flow of water.

 

The new installation should be:  Pool →  Pump → Filter → 

Nature

2

 Purifier → Pool.

8. 

Remove plugs or open all valves

 used to isolate the filter. 

Screw on the cap until it is snug. 

Do not over tighten.

 Check 

that all connections are secure.

IMPORTANT   Do not install the Nature2 Cartridge until the 

purifier installation is complete.  

9. 

Turn on the pool pump

 and check for and repair any leaks 

you find.

10.  Compare the pressure reading on the filter gauge with the 

pressure reading recorded above.

 

If the pressure increased by:

 

Between 1 and 2 psi:

  Pressure is good. Some increase is 

necessary for water to be forced into the vessel. The vessel 

installation is complete and ready for cartridge start-up.

 

More than 2 psi: 

 There is too much pressure for the 

circulating pump, filter and vessel to work efficiently. The 

vessel may need to be connected via partial bypass. Consult 

your dealer.

  

Less than 1 psi: 

 Use the Flow Restrictor Installation.

Flow Restrictor Installation

1.  Plug any lines (or close valves) to prevent pool from losing 

water.

2.  Disconnect hoses from vessel.
3.  Remove cap and hose adapters.
4.   Remove flow restrictor from the parts bag.
5.  While holding the vessel with the inlet port facing up, reach in 

and place restrictor (fingers facing down) into the flow control 

collar (hole approximately 1” in diameter). 

NOTE

  You may need to reach into the outlet port side of 

the unit to help position the restrictor.

6.  Once the restrictor is positioned properly, place the unit on a 

flat, firm surface keeping the inlet port face up.

7.  Apply downward pressure on restrictor using a blunt-handled 

tool such as the end of a broom handle until it snaps into 

place.

8.  Reinstall the vessel and recheck the system pressure.

Bypass Installation

This 38 mm (1 1/2 in.) Nature

2

 Purifier system may need to be 

installed in bypass to the filtration system if plumbing size is 

greater than 38 mm (1 1/2 in.) diameter or if flow rates are greater 

than 303 L/min (80 gpm).
The Nature

2

 Purifier is installed on a bypass loop after the filter 

and always before a chemical dispenser, if equipped, as shown 

below. 

Pump

and

filter

Flow from pool

First

“T”

Second

“T”

Control

valve

Pool heater,

if equipped

Chemical 

dispenser,

if equipped

Return flow

to pool

Optional location

of Nature

2

 Purifier

To Create the Bypass:

1. 

Install a “T” in the return line

 to allow water to divert to the 

Nature

2

 Purifier.  This “T” is then connected to the inlet of the 

purifier. 

2. 

Install a control valve in the return line

 after the first “T” 

and before the second “T”.

3. 

Fully open any valves (including the control valve) that 

were closed

 to isolate the purifier.

4. 

Start the pump

 allowing water to pass through the newly 

plumbed system.  The control valve in the return line 

between the two “T”s will controll the flow through the 

purifier.

NOTE

   For flows in excess of 303 L/min or 80 gpm with the 

Nature

2

 in bypass, do not exceed a 10.3 kPa increase in filter 

backpressure.  Once 10.3 kPa is reached in this situation the 

flow is corrected through the purifier. 

5. 

Check the purifier

 for leaks and fix or replace any fittings.

6. 

Follow the start up procedures. 

Summary of Contents for Nature2 Express

Page 1: ...kg Circulation system flow rate 95 303 L min Purifier flow rate 38 68 L min internal bypass Maximum operating pressure 173 kPa Cartridge dimensions 248 x 118 mm Replacement cartridge A30 ec 18 000 11...

Page 2: ...rifier Cartridge 6 Winterizing Your Pool 6 Warranty 7 Install the Vessel Refer to the diagram below for part references 1 Decide where to install the Nature2 vessel It should be installed On a concret...

Page 3: ...el 3 Remove cap and hose adapters 4 Remove flow restrictor from the parts bag 5 While holding the vessel with the inlet port facing up reach in and place restrictor fingers facing down into the flow c...

Page 4: ...ace becomes rough or discolored The water becomes cloudy or milky white How to fix Add acid to bring alkalinity down Start Up Before starting up a new Nature2 Cartridge clean debris and algae out of t...

Page 5: ...algaecide treatments are recommended for outdoor pools that experience persistent algae problems Do not use algae treatments containing either copper or sodium bromide Stains Blue green Copper or iro...

Page 6: ...ses the spread of algae and other pollutants 2 There is no need to shock the pool during cool weather unless the water becomes cloudy as may occur after a winter storm See Cloudy Water in Troubleshoot...

Page 7: ...the cartridge is defective or does not perform to your complete satisfaction for the entire six 6 months we will make prorate rebate based on your actual period of use Please consult this Owner s Man...

Page 8: ...l 888 647 4004 Fax 905 825 5780 Zodiac Pool Systems Inc 2620 Commerce Way Vista CA 92081 1 800 822 7933 www ZodiacPoolSystems com ZODIAC is a registered trademark of Zodiac International S A S U used...

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