Zodiac Pool Systems Nature2 Pro A Plus Installation And Operating Manual page 2

Installation
For proper operation, the acceptable flow rate for the Pro A Plus
is 20 to 80 GPM.
For flow rates up to 80 GPM, use the fittings provided to connect the
corrugated tubing from the filter to the Pro A Plus.
For flow rates of more than 80 GPM, the unit must be hard-plumbed
using schedule 40 PVC.
If your pump system is designed to produce flow rates greater
than 80 GPM or if the plumbing is greater than 2", the Pro A Plus
must be installed in a bypass configuration.
Install the Vessel
IMPORTANT: Turn off the pump and filter. Isolate the pool
equipment (to prevent pool draining), plugging all lines between
the equipment and the pool, or closing the in-line valve.
Decide where to install the Pro A Plus vessel. It must be installed:
• on a concrete slab to support the weight of the vessel
• after the filter on the main return to the pool
• after the heater (downstream from a solar heating system)
• with a check valve between the vessel and the pool return
to prevent the pool from draining during installation, cartridge
change or chlorine tablet addition
Never install Pro A Plus feeder directly into copper plumbing as
pipe damage may occur. If you have brass or bronze backwash
valves, or other sensitive metallic components, consult your
dealer for precautions or recommendations.
Refer to the diagram below for part references.
2
Nature Cartridge
®
Vessel Cap
2
Nature
Indicator
Ring
2
Nature
Locking
Ring
2
Nature
Cartridge
Chamber
Drain Plug
Inlet Port
1. Wrap the hose adapters from the parts bag (holding adapter with
threaded end towards you) with Teflon
wraps, overlapping about half the tape on the threads.
Note: If the pool uses the large diameter hose (1-1/2"), cut off
the ends of the adapter (the 1-1/4" stubs) as marked on each
adapter, so water flow is not blocked.
2. Hand tighten both adapters into the base of the Pro A Plus.
Then, with a wrench, tighten no more than one-half turn more.
Chlorine
Dispenser Cap
Chlorine
Locking
Ring
Chlorine
Regulator Dial
Chlorine
Dispenser
Drain Plug
Outlet Port
tape three (3) or four (4)
®*
3. Disconnect the hose on the outlet side of the filter. Connect it to
the outlet side (chlorine side) of the vessel.
4. Install a new section of connector hose between the outlet side
of the filter and the inlet side of the vessel. Use hose clamps
(in parts bag) to secure the hose. The new installation will be:
Pool - Pump - Filter - Nature
5. Important: Do not install the Nature2 Cartridge. Screw on
the vessel caps until snug. Do not over tighten. Verify that all
connections are secure.
6. Open any valves (remove plugs) used to isolate the equipment.
Start the pump and check the system for leaks.
Hard-Plumbing Installation
1. Connect the outlet from the filter to the vessel inlet port with
the appropriate Schedule 40 PVC pipe. Secure the connection
with PVC pipe glue.
2. Connect the vessel outlet port to the pool's return line with the
same type of PVC pipe and secure with pipe glue.
3. Allow sufficient time for the glue to dry.
Important: Do not install the Nature2 Cartridge. Screw on
4.
the vessel caps until snug. Do not over tighten. Verify that all
connections are secure.
5. Open any valves (remove plugs) used to isolate the equipment.
Start the pump and check the system for leaks.
Bypass Installation
Install the Nature2 vessel on a bypass loop as the last component on
the pool return line. To create the bypass.
From
Pool
Filter
Pump
1. Install two (2) tees in the pool return line to allow water to be
diverted to the Pro A Plus vessel.
2. Connect the bypass line from the first tee to the inlet of the vessel
and from the outlet of the vessel, connect a line to the second tee.
To Auxiliary
3. Install a control valve in the return line between the first and
Equipment
second tee to control the water flow through the bypass.
4. Important: Do not install the Nature2 Cartridge. Screw
on the vessel caps until snug. Do not over tighten. Verify that
all connections are secure.
5. Open any valves, including the control valve, that were closed.
Start the pump, diverting water through the new bypass.
6. With the valve open, read the pressure on the filter gauge. Adjust
the control valve until the filter gauge increases by 2 psi.
7. Check the vessel and system for leaks.
2
2 Vessel - Pool.
Pro A Check Valve
Heater Plus
1st Tee 2nd Tee
Valve
To
Pool