Doyon WM35 Manual - Page 8
Browse online or download pdf Manual for Measuring Instruments Doyon WM35. Doyon WM35 13 pages. Doyon wm35 water meter: operating instruction
Print PageWARNING : THE INTERVENTION OF A LICENSED INSTALLER IS NEEDED
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In the case of hard water (with high limescale content = hardness in French degrees higher
than 25-30) it is necessary to employ an ion exchange water softener. This unit must be
calibrated so as to maintain a residual hardness ranging between 5 and 10 French degrees.
We advise against the use of electronic water softeners, since their efficacy has not been
proved yet.
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Fix the doser on the wall at a height from the floor of 1350 ÷ 1550mm using the two wall
plugs supplied. The 90° wall plug hook is supplied to provide support for the water delivery
outlet elbow.
Do not place other machines below the DOSER.
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Arrange the water inlet tubings, mounting the ball taps (1) at their ends.
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Connect the doser to the ball gates valve using connectors (2).
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Connect the delivery tube (10) to the machine.
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Provide connection to an adeguate power supply (see equipment rating plate near the plug 6),
monophase, 50 or 60Hz, using the supplied flying spcket, fitted with a three core cable with
min. section 3 x 1 mm². It is advisable to use an external switch.
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If a pump remote control is required, use the power socket provided to supply the remote
contactor of the pump(s). The employment of such pump is necessary when the inlet pressure
is less than 7 psi, for example when using unpressurized water heaters or refrigerators.
NOTICE : in the case of water chiller equipped with a surge tank with pressure switch,
this must be by-passed and the pump must be controlled directly by the Doser, through
a power relay.
The plug has the following wiring diagram :
7
INSTALLATION
MAX 3A resistive