9. Plug the pump cord into the wall outlet and start the system. In the event of a
disruption in the power supply, the ACT–4 wireless pump will resume communication
with the paired mixing valve.
10. Open the timer cover. Rotate the dial clockwise until the current time is aligned with
the pointer at the top (12 o'clock position) of the dial.
See Thermostat Controlled Operation PLUS Timer section below.
Install the valve
1. Prepare the installation site, which is the faucet/tap farthest from the hot water source.
2. Close the hot and cold water riser shutoff valves and open the hot and cold water
faucets/taps to relieve the water pressure. Close the water faucets/taps.
In some older homes, the riser shutoff valves may be difficult to shut off completely. If
so, turn off the water at the main water inlet valve to the house.
3. Remove the existing flexible line connections to the hot and cold water faucet/tap
threaded nipples.
Use a bucket to collect any excess drainage.
a) If necessary, replace existing flexible hoses with new stainless steel braided
flexible hoses in the lengths required.
4. Screw on the two existing 1/2” hose connections to the corresponding hot and cold
sides of the valve housing, denoted as “H” and “C” respectively. Grip the valve only by
the brass hex feature during assembly.
Be careful not to kink the existing hose lines while bending, which can prevent
adequate flow and/or cause the valves to break.
a) Inspect the rubber washers in the hose connections to ensure that they are in
reusable condition. If not, replace.
Installation
Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Installation, Operation and Maintenance
Manual
11
