Instruction manual

Hallett 15xs Instruction Manual

Connecting the Pipes

We recommend that a qualified plumber or certified technician perform the water

connections for your Hallett. Water must flow into the inlet at the bottom of

the unit. The outlet is located at the top of the unit. Install the shutoff valve

before the unit.

Step 1: Shut off the water supply. Caution: Always turn off the water supply

before modifying or disconnecting any piping. Always open a faucet after shutting

off the water supply to relieve water pressure and ensure that the water has been

completely shut off.

Step 2: If you have decided to install an optional bypass line and drain, you may

begin to install these fittings at this point. See Figure 1B or 1C for more

information on how to connect optional bypass piping and drain.

Step 3: Connect the solenoid valve to the plumbing just upstream of (before) the

unit. Note the solenoid valve ensures that should the system fail, due to power

loss, color in the water or low UV lamp output, the system will fail in safe mode

and shut down the flow of water to your tap.

The direction of flow through the valve is important – verify flow direction with

label on the valve. Caution: over tightening a metal fitting into the valve will

cause it to crack. Do not over tighten. Keep the coil of the valve pointing

upward (to prevent water from dripping on it). Water will not flow backwards

through the valve. See Figure 1D

Step 4: Connect the solenoid valve to the Stainless flexible hose attached to the

bottom of the Hallett. Do not bend the hose excessively. Make sure the sealing

washer is inside the end of the hose before making the connection. The solenoid

valve plugs into the right hand side of the unit where a port is provided. The

valve is a non-serviceable component and nothing else should be plugged

into this port. Secure the cable from the valve to the wall. The solenoid valve is

normally closed and must be powered to open. The valve has a manual override

(white lever) that can be used to force the valve open should you require water

for service/emergency purposes (note in the event of alarm and shut down it is

recommended you boil your water). In any regulated sites such as municipal

applications, the manual override should not be used. For normal operation,

always leave valve in automatic position. In the Setup menu of the Hallett, toggle

the valve to be “Installed” and a monthly reminder will appear to test valve.

Caution: Do not allow solder or solder flux to fall in or on the unit.

Step 5: Connect the remaining piping to the top Stainless flexible hose at the top

of the unit. Do not use PVC pipe or braided hose at the outlet – during

extended periods of no flow, water temperatures may exceed softening point of

PVC if unit fails to purge. Metal pipe or high temperature plastic pipe such as

PEX, should be used after the flexible hose. Make sure the sealing washer is

inside the end of the hose before making the connection. Do not bend the flexible

hose excessively. Tighten securely.