Xylem 6 71 075 145B User Manual
Instruction Manual
Laing Thermotech ACT-4
wireless Potable Hot Water
Recirculation Kit
Table of Contents
Introduction and Safety................................................................................................ 2
Introduction............................................................................................................... 2
Safety.......................................................................................................................... 2
Safety terminology and symbols........................................................................2
User safety.............................................................................................................3
Environmental safety............................................................................................4
Product Description...................................................................................................... 6
General description..................................................................................................6
Operational
Installation...................................................................................................................... 9
Preinstallation............................................................................................................ 9
Recommended installation....................................................................................10
Install the pump...................................................................................................... 11
Install the valve........................................................................................................12
Commissioning, Startup, Operation, and Shutdown............................................. 15
Thermostat controlled operation..........................................................................15
Thermostat controlled operation Plus Timer...................................................... 15
Optional Push-Button / Signal Repeater..............................................................17
specifications.......................................................................................6
Table of Contents
Maintenance................................................................................................................ 19
Valve and pump inspection...................................................................................19
Pairing after pump or valve replacement............................................................ 19
Replace the batteries..............................................................................................19
Return to service after shutdown of two weeks or more................................... 20
Troubleshooting..........................................................................................................21
LED codes................................................................................................................21
Operation troubleshooting................................................................................... 21
Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Instruction
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Introduction and Safety
Introduction and Safety
Introduction
Purpose of this manual
The purpose of this manual is to provide necessary information for:
• Installation
• Operation
• Maintenance
CAUTION:
Read this manual carefully before installing and using the product. Improper
use of the product can cause personal injury and damage to property, and may
void the warranty.
NOTICE:
Save this manual for future reference, and keep it readily available at the
location of the unit.
Safety
WARNING:
• The operator must be aware of safety precautions to prevent physical
injury.
• Any pressure-containing device can explode, rupture, or discharge its
contents if it is over-pressurized. Take all necessary measures to avoid
over-pressurization.
• Operating, installing, or maintaining the unit in any way that is not covered
in this manual could cause death, serious personal injury, or damage to the
equipment. This includes any
not provided by Xylem. If there is a question regarding the intended use of
the equipment, please contact a Xylem representative before proceeding.
• Do not change the service application without the approval of an
authorized Xylem representative.
modification to the equipment or use of parts
CAUTION:
You must observe the instructions contained in this manual. Failure to do so
could result in physical injury, damage, or delays.
Safety terminology and symbols
About safety messages
It is extremely important that you read, understand, and follow the safety
messages and regulations carefully before handling the product. They are
published to help prevent these hazards:
• Personal accidents and health problems
• Damage to the product
• Product malfunction
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Hazard levels
Hazard level Indication
DANGER:
A hazardous situation which, if not avoided, will
result in death or serious injury
Introduction and Safety
NOTICE:
Hazard categories
Hazard categories can either fall under hazard levels or let specific symbols
replace the ordinary hazard level symbols.
Electrical hazards are indicated by the following specific symbol:
Electrical Hazard:
These are examples of other categories that can occur. They fall under the
ordinary hazard levels and may use complementing symbols:
• Crush hazard
• Cutting hazard
• Arc flash hazard
User safety
General safety rules
These safety rules apply:
• Always keep the work area clean.
• Pay attention to the risks presented by gas and vapors in the work area.
• Avoid all electrical dangers. Pay attention to the risks of electric shock or
• Always bear in mind the risk of drowning, electrical accidents, and burn
Safety equipment
Use safety equipment according to the company regulations. Use this safety
equipment within the work area:
• Hard hat
• Safety goggles, preferably with side shields
• Protective shoes
flash hazards.
arc
injuries.
WARNING:
CAUTION:
A hazardous situation which, if not avoided, could
result in death or serious injury
A hazardous situation which, if not avoided, could
result in minor or moderate injury
• A potential situation which, if not avoided,
could result in undesirable conditions
• A practice not related to personal injury
Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Instruction
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Introduction and Safety
• Protective gloves
• Gas mask
• Hearing protection
• First-aid kit
• Safety devices
NOTICE:
Never operate a unit unless safety devices are installed. Also see specific
information about safety devices in other chapters of this manual.
Electrical connections
Electrical connections must be made by certified electricians in compliance with
all international, national, state, and local regulations. For more information
about requirements, see sections dealing specifically with electrical
connections.
Precautions before work
Observe these safety precautions before you work with the product or are in
connection with the product:
• Provide a suitable barrier around the work area, for example, a guard rail.
• Make sure that all safety guards are in place and secure.
• Make sure that you have a clear path of retreat.
• Make sure that the product cannot roll or fall over and injure people or
damage property.
• Make sure that the lifting equipment is in good condition.
• Use a lifting harness, a safety line, and a breathing device as required.
• Allow all system and pump components to cool before you handle them.
• Make sure that the product has been thoroughly cleaned.
• Disconnect and lock out power before you service the pump.
• Check the explosion risk before you weld or use electric hand tools.
Wash the skin and eyes
Follow these procedures for chemicals or hazardous
into contact with your eyes or your skin:
Condition Action
Chemicals or hazardous
fluids in eyes
Chemicals or hazardous
fluids on skin
fluids that have come
1. Hold your eyelids apart forcibly with your fingers.
2. Rinse the eyes with eyewash or running water for at least
15 minutes.
3. Seek medical attention.
1. Remove contaminated clothing.
2. Wash the skin with soap and water for at least 1 minute.
3. Seek medical attention, if necessary.
Environmental safety
The work area
Always keep the station clean.
Waste and emissions regulations
Observe these safety regulations regarding waste and emissions:
• Appropriately dispose of all waste.
• Handle and dispose of the processed liquid in compliance with applicable
environmental regulations.
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• Clean up all spills in accordance with safety and environmental
procedures.
• Report all environmental emissions to the appropriate authorities.
WARNING:
Radiation Hazard. Do NOT send the product to Xylem if it has been exposed to
any nuclear radiation.
Electrical installation
For electrical installation recycling requirements, consult your local electric
utility.
Recycling guidelines
Always follow local laws and regulations regarding recycling.
FCC Statement (United States Only)
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
1. this device may not cause harmful interference and
2. this device must accept any interference received, including interference
that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Consult the dealer or an experienced radio/TV technician for help.
Changes or
responsible for compliance could void the user’s authority to operate the
equipment.
Certifications
CSA Certified: NSF/ANSI-372 Compliant
Industry Canada RSS Statement (Canada Only)
This device complies with Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interference, including
interference that may cause undesired operation of the device.
modifications not expressly approved by the manufacturer
Introduction and Safety
Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Instruction
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Product Description
Product Description
General description
The ACT-4 wireless is a potable hot water recirculation kit for use in new and
retrofit domestic hot water systems. The kit helps to:
• Improve comfort through instant hot water
• Save energy
• Conserve water
Parts included in kit
• Pump with a built-in timer
• 6 ft (1.8 m) power cord
• Under-sink mixing valve with transmitter/receiver
• Two 1.5V LR06 AA Batteries
• Valve mounting bracket
• Two screws
• Installation, Operation, and Maintenance Manual (IOM)
Additional parts needed for install
• (2) 3/8" Compression x 1/2" stainless steel
• (2) 1/2" x 1/2" stainless steel
• Hand tools including various wrenches and #0 and #2 Phillips Head
screwdrivers
• (1) 3/4" Isolation shut-off valve and associated adapters and nipples
(optional - if pump desired to be isolated for maintenance)
Verify the type of 1/2" connection that may be required for the stainless steel
flex hoses: Compression or NPT/IPS.
flex hoses (optional)
flex hoses
Operational
Operational limits
6 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Instruction
specifications
Pump and valve
Operating medium Water
Maximum working pressure 145 PSI (10 bar)
Minimum operating differential pressure (Valve) 1.6 PSI (0.11 bar)
Maximum water temperature 203°F (95°C)
Motor 115 V, 1 PH, 60 Hz, 20 Watts input, 0.3 Amps,
4800 RPM
Operating noise level 30 dB
Battery power 1.5 V each
Estimated battery life 2 Years
Maximum operating range 150 ft (45 m)
Manual
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
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
satisfied, a
Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit Instruction
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