Xylem 6 71 075 145B ACT-4 Potable Hot Water Recirculating Systems - Manual (Page 9)

WARNING:
Do NOT exceed the maximum working pressure of the pump. This information
is listed on the nameplate of the pump.
WARNING:
California Proposition 65 warning! This product contains chemicals known to
the state of California to cause cancer and birth defects or other reproductive
harm.
How the system works
The ACT–4 wireless potable hot water recirculation kit features a factory paired
pump and mixing valve that wirelessly communicate temperature data and
operational status between each other. The ACT–4 wireless pump with built-in
timer is installed on the supply side of the hot water source, as presented below.
The paired mixing valve is installed under the sink farthest from the hot water
source. A temperature sensor within the valve detects the water temperature
and wirelessly transmits this data to the pump.
The desired water temperature at the mixing valve is set remotely with the
thermostat dial on the pump. When the water temperature sensed at the valve
is below the desired setting, a signal is sent to the ACT–4 wireless pump to
begin circulating hot water throughout the system. The mixing feature of the
valve tempers the cold water at the faucet or tap, providing instant hot water at
this location and so satisfying the need for hot water at all upstream water
outlets. When the temperature requirement at the valve has been satisfied, a
signal is sent to turn off the pump. This system prevents continuous running and
saves energy.
For more energy savings, the ACT–4 wireless pump can be set for Timer
Operation to run only during the time periods when hot water is most frequently
required.
An optional push-button / signal repeater device is available to provide instant
hot water with a touch of a button. Pressing the push-button will activate the
pump and begin circulating hot water throughout the system, outside of the set
Timer Operation, until the desired temperature is met at the valve. Acting in its
secondary function as a signal repeater, this device will also extend the
operational range of the pump and valve and aid in the transmission of data
between the two devices where necessary.
The instant hot water delivery with the ACT–4 wireless potable hot water
recirculation kit saves water and time, while improving comfort, as water does
not need to run continuously while waiting for it to warm up.
Product Description
Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Instruction
Manual 7