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The temperature of hot water flowing
out of the heater is adjusted
by closing or opening of the
hot water valve slowly.
Equipment of the heater:
The set to be installed together with the tap: Heater, tap, spout with aerator
(fig. 1a), installation wrench, junction box (availa-
ble as an additional element), operating instruc-
tions, list of service centres, guarantee card.
Set for the installation with the service connec-
tion: Heater, shut-off valve, ½” connection, (fig.
1b), installation wrench, junction box, (available
as an additional element), operating instructions,
list of service centres, guarantee card.
Set for installation with the three-way tap.
Heater, 2 M 18x2/ ½” reducing nipples, installation wrench, shut-off valve
(available as an additional element), junction box (available as an additional
element), operating instructions, list of service centres and guarantee card.
For heaters with the power of 3700 W, an aerator and M 22x1/M 24x1 aera-
tor reducer is supplied.
fig 1
a)
b)
3. Construction of the water heater
The DAFI heater consists of the heating block placed on the water unit. The
water unit is made of the base which is provided with short stub pipes for
supply of cold water and discharge of hot water. Inside the heater, there is
the heating block provided with water channels with the heating element
(heating strand) and elements used for supplying electricity. The whole devi-
ce is enclosed in an enclosure.
4. Operating principle
After opening the hot water valve, the flowing water causes the flow con-
nector to be switched on (power is supplied to the heating element) and
the flowing water directed to the tap is heated. Water temperature depends
on the pressure and temperature of the water flowing into the heater. The
closure of the hot water valve causes the flow connector to be switched off
(the power supply to the heating element is interrupted). The temperature
of the water flowing into the heater can be adjusted only by closing and
opening of the hot water valve slowly within the scope of outflow of the hot
water from the heater.
The smaller water flow means the higher temperature.
