DIVA HF
17
EN
Table. 6 - Accessories
Connection to collective flues
fig. 13 - Examples of connection to flues (
= Air /
= Fumes)
Table. 7 - Typology
If the boiler is to be connected
DIVA HF
to a collective flue or a single flue with natural
draught, the flue or chimney must be expressly designed by professionally qualified tech-
nical personnel in conformity with the current regulations and be suitable for sealed
chamber units equipped with fan.
4. SERVICE AND MAINTENANCE
4.1 Adjustments
Gas conversion
The unit can work on natural gas or LPG and is factory-set for use with one of these two
gases, as clearly shown on the packing and data plate. Whenever a different gas to that
for which the unit is arranged has to be used, the special conversion kit will be required,
proceeding as follows:
1.
Disconnect the power supply ahead of the boiler and close the gas cock;
2.
Replace the nozzles at the main burner and pilot burner, fitting the nozzles indicated
in the technical data table in cap. 5, depending on the type of gas used
3.
Connect the power supply ahead of the boiler and open the gas cock;
4.
Modify the parameter for the type of gas:
•
put the boiler in standby mode
•
press the DHW buttons details 1 and 2 - fig. 1 for 10 seconds: the display shows
“
b01
“ flashing.
•
press the DHW buttons details 1 and 2 - fig. 1) to set parameter
00
(for opera-
tion with natural gas) or
01
(for operation with LPG).
•
press the DHW buttons details 1 and 2 - fig. 1 for 10 seconds.
•
the boiler will return to standby mode
5.
Adjust the minimum and maximum pressures at the burner (ref. relevant para-
graph), setting the values given in the technical data table for the type of gas used
6.
Apply the sticker, contained in the conversion kit, near the data plate as proof of the
conversion.
TEST mode activation
Press the heating buttons (detail 3 - fig. 1) together for 5 seconds to activate the
TEST
mode
. The boiler lights at the maximum heating power set as described in the following
section.
The heating and DHW symbols (fig. 14) flash on the display; the heating power will ap-
pear alongside.
fig. 14 - TEST mode (heating power = 100%)
Press the heating buttons (details 3 and 4 - fig. 1) to increase or decrease the power
(Min.=0%, Max.=100%).
If the TEST mode is activated and enough hot water is drawn to activate the DHW mode,
the boiler remains in TEST mode but the 3-way valve goes to DHW.
To deactivate the TEST mode, press the heating buttons (details 3 and 4 - fig. 1) together
for 5 seconds.
The TEST mode is automatically deactivated in any case after 15 minutes or on stopping
of hot water drawing (if enough hot water has been drawn to activate the DHW mode).
Adjustment of pressure at the burner
Since this unit has flame modulation, there are two fixed pressure values: the minimum
and maximum, which must be those given in the technical data table according to the
type of gas.
•
Connect a suitable pressure gauge to pressure point
“B”
located downstream of the
gas valve
•
Remove the protection cap
“D”
undoing screw
“A”
.
•
Operate the boiler in
TEST mode
.
•
Adjust the power to the max. value.
•
Adjust the max. pressure with screw
"G"
, clockwise to increase the pressure and
anticlockwise to decrease it
•
Disconnect one of the two Faston connectors from the modureg
"C"
on the gas
valve.
•
Adjust the min. pressure with screw
"E"
, clockwise to decrease the pressure and
anticlockwise to increase it.
•
Reconnect the Faston connector detached from the modureg on the gas valve.
•
Check that the maximum pressure has not changed.
•
Refit protection cap
“D”
.
•
To end the
TEST mode
repeat the activation sequence or wait 15 minutes.
A
After checking or adjusting the pressure, make sure to seal the adjust-
ment screw with paint or a specific seal.
Losses in m
eq
Air
inlet
Fume exhaust
Vertical
Horizontal
Ø 80
PIPE
0.5 m M/F
1KWMA38A
0.5
0.5
1.0
1 m M/F
1KWMA83A
1.0
1.0
2.0
2 m M/F
1KWMA06K
2.0
2.0
4.0
BEND
45° F/F
1KWMA01K
1.9
2.9
45° M/F
1KWMA65A
1.9
2.9
90° F/F
1KWMA02K
2.0
3.0
90° M/F
1KWMA82A
1.5
2.5
90° M/F + Test point
1KWMA70U
1.5
2.5
PIPE SECTION
with test point
1KWMA16U
0.2
0.2
for condensate drain
1KWMA55U
-
3.0
TEE
for condensate drain
1KWMA05K
-
7.0
TERMINAL
air, wall
1KWMA85A
2.0
-
fumes, wall with antiwind
1KWMA86A
-
5.0
FLUE
Split air/fumes 80/80
1KWMA84U
-
12.0
Fume outlet only Ø80
1K
1KWMA86U
-
4.0
Ø 100
REDUCTION
from Ø80 to Ø100
1KWMA03U
0.0
0.0
from Ø100 to Ø80
1.5
3.0
PIPE
1 m M/F
1KWMA08K
0.4
0.4
0.8
BEND
45° M/F
1KWMA03K
0.6
1.0
90° M/F
1KWMA04K
0.8
1.3
TERMINAL
air, wall
1KWMA14K
1.5
-
fumes, wall with antiwind
1KWMA29K
-
3.0
Ø 60
PIPE 1 m M/F
010028X0
-
2.0
6.0
BEND 90° M/F
010029X0
-
6.0
REDUCTION 80 - 60
010030X0
-
8.0
TERMINAL fumes, wall
1KWMA90A
-
7.0
ATTENTION: CONSIDER THE HIGH PRESSURE LOSSES OF Ø60 ACCESSORIES;
USE THEM ONLY IF NECESSARY AND AT THE LAST FUME EXHAUST SECTION.
Type
Description
C2X
Intake and exhaust in common flue (intake and exhaust in same flue)
C4X
Intake and exhaust in common and separate flues , but undergoing similar wind conditions
C8X
Exhaust in single or common flue and wall intake
B3X
Intake from installation room by means of concentric duct (that encloses the exhaust) and exhaust in
common flue with natural draught
IMPORTANT - THE ROOM MUST BE PROVIDED WITH APPROPRIATE VENTILATION
C
8X
C
2X
C
4X
IIII
IIIIIIIIIIIIIII
IIIIII
IIII
II
III
IIIIIIII
IIIII
cod. 3541E613 - Rev. 00 - 02/2016
