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Master Meter, Inc. 101 Regency Pkwy, Mansfield, TX 76063 T: 817-842-8000 F: 817-842-8100 MasterMeter.com
Allegro
User Manual
Models: ALLEGRO4I, ALLEGRO4E
FCC ID: NTA2W4GB4
IC: 4732A-2W4GB4
Rev 1.0
Jan, 2026
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Master Meter, Inc. 101 Regency Pkwy, Mansfield, TX 76063 T: 817-842-8000 F: 817-842-8100 MasterMeter.com
Allegro general view
Model: ALLEGRO3E
Model: ALLEGRO3I
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Master Meter, Inc. 101 Regency Pkwy, Mansfield, TX 76063 T: 817-842-8000 F: 817-842-8100 MasterMeter.com
Regulation Information
FCC Part 15 Regulation Class B digital device notice
The digital circuit of this device 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.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-Consult the dealer or an experienced radio/TV technician for help.
CAN ICES-3 (B)/NMB-3(B)
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numerique de la classe B est conforme a la norme NMB-003 du Canada.
FCC interference Notice
This device complies with part 15 of the FCC rules.
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.
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Master Meter, Inc. 101 Regency Pkwy, Mansfield, TX 76063 T: 817-842-8000 F: 817-842-8100 MasterMeter.com
Industry Canada interference Notice
This device complies with Industry Canada’s license-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.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio
exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :
(1) l’appareil ne doit pas produire de brouillage;
(2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d’en compromettre le fonctionnement.
FCC and Industry Canada Radiation Hazard Warning
WARNING! To comply with FCC and IC RF exposure compliance requirements, the device
should be located at a distance of at least 46 cm from all persons during normal operation. The
antennas used for this product must not be co-located or operated in conjunction with any
other antenna or transmitter.
Le dispositif doit être placé à une distance d'au moins 46 cm à partir de toutes les personnes au
cours de son fonctionnement normal. Les antennes utilisées pour ce produit ne doivent pas être
situés ou exploités conjointement avec une autre antenne ou transmetteur.
The device meets the exemption from the routine evaluation limits in section 2.5 of RSS-102
and compliance with RSS-102 RF exposure, users can obtain Canadian information on RF
exposure and compliance.
WARNING! Changes or modifications to this equipment not expressly approved by the party
responsible for compliance (Master Meter) could void the user’s authority to operate the
equipment.
Professionally trained personnel should install the equipment.
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Master Meter, Inc. 101 Regency Pkwy, Mansfield, TX 76063 T: 817-842-8000 F: 817-842-8100 MasterMeter.com
MULTI-JET METER INSTALLATION INSTRUCTIONS
The installation instructions detailed below are consistent with recommendations by the American
Water Works Association in AWWA Manual M6, Water Meters-Selection, Installation, Testing, and
Maintenance.
WE RECOMMEND IN THE DESIGN OF THE INSTALLATION:
1. The installation should include a high quality, low pressure loss shutoff valve
upstream of the meter to prevent water damage to the customer property when service
is required, a downstream shutoff valve is likewise recommended.
2. The meter should be installed in a horizontal plane, with the register upright, in a
location accessible for reading, service and inspection.
3. The installation should be leak-tight, with properly sized gaskets. When meter
connections are ordered from Master Meter, gaskets are provided. Appropriate gaskets
and couplings also are available from a qualified waterworks distributor. Whenever a
meter is pulled from the line, discard and replace the old gaskets.
4. Although AWWA opposes the grounding of electrical systems to potable water
delivery lines, such practices do exist. To prevent accidental harm to service personnel,
make certain that an electrical grounding strap is installed around the meter.
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Master Meter, Inc. 101 Regency Pkwy, Mansfield, TX 76063 T: 817-842-8000 F: 817-842-8100 MasterMeter.com
AT THE TIME OF INSTALLATION:
1. Thoroughly flush the service line upstream of the meter to remove dirt and debris.
2. Remove meter spud thread protectors. Note: To protect the meter spud threads, sore
the meter with the thread protectors in place.
3. Set the meter in the line. Arrows on the side of the meter and above the outlet spud
indicate the direction of flow.
4. Do not over-tighten connections; tighten only as required to seal. Do not use pipe
sealant or Teflon tape on meter threads.
5. With upstream shutoff valve only: Open the shutoff valve slowly, to remove air from
meter and service line. Open a consumer faucet slowly to allow entrapped air to escape.
Close the customer Faucet.
5.1. With upstream and downstream shutoff valves installed:
A. To test the installation for leaks: Close the outlet (downstream) shutoff valve.
Open the inlet (upstream) shutoff slowly until the meter is full of water.
B. Open the outlet (downstream) valve slowly until air is out of the meter and
service line. Open a customer faucet slowly to allow entrapped air to escape.
Close the customer faucet.
