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.
1
2
3
4
5
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6
8
9
10
1.
ACT-4 wireless pump
2.
Hot water source
3.
Hot water
4.
Cold water
5.
Hot water flex hose
6.
cold water flex hose
7.
Hot water supply hose
8.
Cold water supply hose
9.
ACT-4 wireless mixing valve
10. Optional push-button / repeater
Product Description
Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Installation, Operation and Maintenance
Manual
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