3
3. Compact water heaters
Type of water heater
COMPACT HEATER
COMPACT HEATER
for low mounting for overhead mounting
Nominal capacity
litres
10
15
10
15
30
Nominal power
watts
2000
2000
2000
2000
2000
Heating time (1)
minutes
19
28
24
28
57
Maintaining consumption
kWh per 24 hours at 65˚C (2)
0.63
0.68
0.42
0.51
0.73
Cooling constant
Wh per 24 hours / litre / ˚C
1.21
0.90
1.00
0.75
0.54
Main dimensions
A
mm
456
496
456
496
623
B
mm
255
287
255
287
338
C
mm
218
218
289
327
463
D
mm
262
294
262
294
345
E
mm
64
70
64
70
81
(1) As per standard NFC 73 221 (15˚C to 65˚C). (2) As per French Standard.
Electrical connections
Compact water heaters are factory set for a single-phase 230 VAC
power supply.
Earth continuity (with the special terminal on the unit) is compulso-
ry. The section of the line, the omnipole breaking device and the
protection system (fuses or circuit-breakers) shall be selected in
keeping with applicable standards, depending upon the input inten-
sity, voltage and power.
Note: The heaters must necessarily be connected to a fixed piping system.
In principle, power will be supplied to the heater at night, either manually or
automatically with the help of a clock supplied by the electricity company. In
this way, the water is heated when the reduced off-peak rate is charged for
electricity. The unit may be fitted with a switch for supplying power in the day-
time, when the full rate is charged.
Type of water heater
For low
For overhead
mounting
mounting
Capacity
litres
10
15
10
15
30
Power supply
single single single single single
Section
mm
2
2,5
2,5
1,5
2,5
2,5
Single-phase 230 V
Intensity
Amperes
8,7
8,7
7,0
8,7
8,7
Compact water heaters are supplied with a 750 mm long connecting cable.
Hydraulic connections
The connections are marked with blue (cold water) and red (hot
water) discs. Fitting a stop valve on the cold water supply pipe is
compulsory.
If the heater supplies water to only one drawing point and is not
connected in an inlet controlled configuration or if it is used to sup-
ply water to more than one drawing point,
a lead-sealed safety
valve calibrated to 7 bar must necessarily be fitted on the cold water
supply pipe (for the guarantee to operate). We recommend the use
of diaphragm type hydraulic safety units bearing the NF mark.
A
pressure reducing valve must be fitted if the supply pressure is
greater than 5.5 bar.
Examples of installation
Type of heater
COMPACT HEATER
COMPACT HEATER
for low mounting for overhead mounting
Capacity
litres
10
15
10
15
30
Dimensions of AFY 40 cast- female
1/2"
ron pipe joints in inches
male
3/8" or 1/2"
Copper pipe dimensions
mm
10 x 12 or 12 x 14
Note: Connections to copper pipes must necessarily be done by means of a
cast-iron male/female reducing or non reducing pipe joint for the guarantee
to operate. E.g. AFY 40 pipe joints.
;;
@@
;;
yy
Cold water
supply pipe
R 1/2
Hot water
outlet pipe
R 1/2
For
overhead
mounting
For
low
mounting
A
C
100
E
D
øB
A
C
100
E
D
øB
184
De D
ietr
ich
28
28
62
62
De D
ietr
ich
9 29
28
57
a
b
c
d
e
2 cm
(54)
30
For low mounting: 10 and 15 litres
For overhead mounting: 10, 15 and 30 litres
8978F004
8978F005
8978F003
Fastening
dimensions
in mm
750 mm long single-
phase
230 V connecting cable
Hot water outlet pipe
Thermal safety
device
Cladding in cylindrical
enameled white
sheet metal
Vitreous enamel,
resistant to the most
corrosive water
Cold water supply pipe
Adjustable thermostat
Operation
indicator lamp
Thick metal tank
(test pressure 12 bar)
Magnesium anode
High-powered heating
element made up of a
metal-clad resistor
Rigid injected
polyurethane
foam insulating material
(0% CFC)
Cladding in cylindrical
enameled white sheet
metal
Hot water outlet pipe
(stainless steel)
High-powered heating
element made up of a
metal-clad resistor
Thermal safety
device
(in electrical cabinet)
Operation
indicator lamp
Adjustable
thermostat
Vitreous enamel,
resistant to the most
corrosive water
Thick metal tank
(test pressure 12 bar)
Magnesium anode
Rigid injected
polyurethane foam
insulating material
(0% CFC)
Cold water supply
pipe with anti-splash
plug (stainless steel)
700 mm long
single-phase
230 V connecting
cable
Heater shown here: 10 L
Heater shown here: 15 L
8971Q006
8971Q005
9. Stop valve
28. Cold water supply pipe
29. Pressure reducing valve
30. Safety unit set to 7 bars
a. Cold water inlet including a non-
return valve
b. Connection to the calorifier cold
water inlet.
c. Stop valve.
d. valve and manual drain.
e. Drain orifice.
54. YA type load break (health regu-
lations).
57. Hot water outlet
62. Mixing tap fittings for free flow
