Helioakmi NovaSun Series User manual

TECHNICAL MANUAL
INSTALLATION, MAINTENANCE AND USE INSTRUCTIONS
ENGLISH

Dear Friends,
This is our rst attempt to communicate with you in this manner, where writing
becomes a friendly chat. Through the pages of our second enriched publica-
tion now in your hands, we present to you our company.
A company offering sunny solutions, working with passion and dedication, for
three decades now, to always offer you the best.
HELIOAKMI has been manufacturing and installing solar water heaters since
the 1970’s making thousands of loyal friends like you along the way. Our
experience in producing highly efcient non-defective products economically,
makes us justiably proud of our contribution to society. Because a solar water
heater isn’t just a simple appliance that makes our life easier. It is a whole phi-
losophy. A philosophy that has taken HELIOAKMI to the top of the world’s hot
water technology from the sun, in over 60 countries, in all climatic conditions
and for all types of water qualities.
A philosophy that leads the way and makes us, as professionals, feel the
weight of responsibility and obligation to offer products and services that are
in harmony with the environment and man. To hand over a better world to our
children.
Always true to our principle for excellence in design and continuous advance-
ments, HELIOAKMI today offers high standard solar water heaters.
Along with architects, engineers, installers and professionals in this eld we
can all create together. Using the most economic and efcient technologies
available we produce hot water from the sun. For the common good.
We live in “special” times. The environment is sounding the alarm. The whole
world is looking towards other renewable energy sources….. The international
outcry is raising consciousness… When the answer is right next to us, should
we still be searching for it?
Solar water heaters are not a luxury. They are a part of the future, today.
The future we promised our children.
Our goal is one. Quality of life. This is our philosophy.

C O N T E N T S
TECHNICAL SPECIFICATIONS AND DIMENSIONS -
ALL MODELS ……………………………………………………… PAGE 4
PACKING OF THE SOLAR WATER HEATER ……………… PAGE 5
WHAT YOU SHOULD KNOW ABOUT
THE NOVASUN SOLAR WATER HEATER ……………… PAGE 6
INSTALLATION INSTRUCTIONS ………………………… PAGE 7
ASSEMBLY DIAGRAM OF THE SUPPORT BASE
ON A FLAT SURFACE …………………………………… PAGE 8
ASSEMBLY DIAGRAM OF THE SUPPORT BASE
ON A SURFACE WITH MAXIMUM INCLINATION
OF 32° …………………………………………………… PAGE 10
ANALYTICAL DESCRIPTION OF THE STORAGE
TANK’S AND COLLECTOR’S COMPONENTS …… PAGE 12
INSTALLATION INSTRUCTIONS OF
THE STORAGE TANK AND COLLECTOR
ON THE SUPPORT BASE ………………………… PAGE 14
CONNECTION INSTRUCTIONS OF
THE STORAGE TANK, COLLECTOR AND COMPONENTS ……………… PAGE 16
FILLING INSTRUCTIONS OF THE CLOSED CIRCUIT
WITH THERMAL FLUID ………………………………………………………… PAGE 18
DESCRIPTION OF THE PARTS OF THE ELECTRIC RESISTANCE
AND THERMOSTAT - CONNECTION INSTRUCTIONS …………………… PAGE 20
SPECIAL CLIMATIC CONDITIONS …………………………………………… PAGE 22
INSTRUCTIONS AFTER THE INSTALLATION ……………………………… PAGE 24
TROUBLESHOOTING
REPLACEMENT OF THE MAGNESIUM ROD
PARALLEL CONNECTION OF MULTIPLE SYSTEMS …………………… PAGE 25
SERIAL CONNECTION OF MULTIPLE SYSTEMS ………………………… PAGE 25
TYPICAL INSTALLATION OF MULTIPLE UNITS …………………………… PAGE 26
TYPICAL INSTALLATION OF MULTIPLE UNITS
PARALLEL CONNECTION …………………………………………………… PAGE 26
PARALLEL CONNECTION OF SYSTEMS IN SERIES …………………… PAGE 27

4
1010
120
1275
160
1275
200
2050
200E
2050
260
2050
300
2580
300E
EXTERNAL DIMENSIONS - ALL MODELS
NOVASUN STORAGE TANK COLLECTOR SUPPORT BASE TOTAL WEIGHT
MODEL kg
Dimensions Weight Dimensions Collectors Surface Weight kg Weight
mm kg mm m
2(per collector) kg
EMPTY FULL
120 530x1100 52 2050x1010x90 1 2,10 43 26 121 231
160 530x1320 62 2050x1275x90 1 2,60 51 27 140 290
200 570x1320 70 2050x1275x90 1 2,60 51 27 148 338
200E 570x1320 70 2050x1010x90 2 4,20 43 28 184 376
260 530x2050 103 2050x1010x90 2 4,20 43 30 219 469
300 570x2050 114 2050x1010x90 2 4,20 43 30 230 520
300E 570x2050 114 2050x1275x90 2 5,20 51 30 246 536
• External casing : anodized aluminium
• Tank’s insulation : polyurethane foam 40-55 mm
• Cylinder’s material : galvanized sheeting 3mm
• Jacket’s material : low carbon steel 1,5 mm
• Cylinder’s internal Protection : durosmalt 80-120 microns
• Additional protection : magnesium rod
• Electric resistance : copper
• Thermostat : bipolar of four contacts
• Power rate : available from 0,8kW – 4kW
TECHNICAL SPECIFICATIONS
OF THE STORAGE TANK
EXTERNAL DIMENSIONS - ALL MODELS
Collector
with titanium
selective treat-
ment
TECHNICAL SPECIFICATIONS
OF THE COLLECTOR
1. External frame : anodized aluminium prole
2. Back side : galvanized sheeting - 0,6 mm
3. Back insulation : rock wool 40 mm
4. Side insulation : glass-wool of 20 mm
5. Absorber : A unique sheet of copper with
selective titanium coating or
with black paint / ulstrasonic
weldings or type “omega” (ø).
6. Absorber’s tubes : copper pipes ∅ 10 & ∅ 22
(risers and headers)
7. Cover : solar tempered glass
8. Water-tightness : EPDM rubber/
transparent silicone
Collector
with black
coating
• HELIOAKMI S.A. reserves the right to change the specications of the product and/or their accessories without prior notice.

• Merchandise travels under buyers responsibility and risk
• The specications of the products and their accessories can change any time without prior notice
• Settlement of any dispute are under the jurisdiction of the courts of Athens in Greece.
PACKING OF THE SOLAR WATER HEATER
All NOVASUN appliances (storage tank, collector, support
base and connection accesories), are delivered well packed
to the customer.
The storage tank is placed between two round styrofoam
covers of 7 cm each, which are tightened on the storage tank
with stretch lm. Then it is placed in a hard carton pack, on
which the indications of each model are displayed on the
outside.
The collector is packed with 4 plastic protective elbows, atta-
ched on each corner, which are fast tightened around the
collector with a plastic strap (upon special order, the collectors
could be delivered in groups of 10 pcs on a wooden pallete).
All the parts of the support base, the plastic bag with the
connection ttings, the thermal uid and other accessories are
packed in a carton box, on which the indications of each model
appear on the outside.
The plastic bag contains all the connection ttings of each
appliance like, screws, nuts for the support base, brackets,
pipe unions, moly plugs, screw-nuts, safety valves, plugs and
lling funnel of the thermal uid.
All the tubes of the storage tank and collectors are covered
with plastic plugs, in order to protect their turns from striking
during the transportation.
5
EXTERNAL DIMENSIONS - ALL MODELS

6
WHAT YOU SHOULD KNOW ABOUT THE NOVASUN SOLAR WATER HEATER
•The advanced technology’s NOVASUN
Solar water heaters use a closed
circuit of natural circulation. The spe-
cial thermal uid, used in the closed
circuit, enhances the performance of
the heater, protects it from the freeze
and it prevents the salt scale deposi-
tion inside the tubes of the collector.
The closed circuit (jacket) where the
thermal uid is circulating, is inde-
pendent and does not communicate
with the water storage tank.
• It is very important to choose with the
local representative of “HELIOAKMI”,
the right size of the solar water heater,
which will full your needs.
• For a better choice of the appliance, the
local climate conditions must be taken
into a serious consideration, as well as
your needs for hot water.
• The energy saving that you will have
with the NOVASUN solar water heater,
depends on the use of hot water, the
use of the electric resistance and the
local weather conditions. Under fa vou-
rable weather conditions, the energy
saving may reach up to 100%. On
sunny days, the power of solar radia-
tion is greater between 10:30am to
15:30pm. For this reason it is better to
schedule your heavy consumption of
hot water (washing machines etc) in the
middle of the day.
• During days with low sunshine and low
ambient temperature, we suggest you to
turn on the electric resistance, in order
to have hot water all the time.
hot outlet
cold inlet

7
INSTALLATION INSTRUCTIONS
• Before you start installing the solar
water heater, please read carefully all
the installation instructions stated and
illustrated in this manual.
• Before the installation of the solar water
heater, it is very important that customer
and installer agree on all the details
concerning the correct and safe instal-
lation of the appliance, such as loca-
tion, placement point, static resistance
and control of the surface on which the
appliance will be placed, piping and
wiring run etc.
• The position you will choose for the
installation of the solar water heater,
should not be shaded by any obstacles
(trees, buildings… etc) all around the
year.
• The installation should be done
according to the electric and plum-
bing regulations applicable in
your area.
• For optimum perfor-
mance, the solar water
heater must face the
south, for countries
located in the Northern hemis-
phere and north for countries
located in the Southern hemisphere. In
case that it is not totally possible for the
solar water heater to face the equator,
you can turn it towards East up to 30o
if major hot water draw is before 2pm,
or towards West up to 30o if major hot
water draw is after 2 pm. In both cases,
the losses of the total annual solar
contribution, is no more than 6%.
• If the solar water heater must be ins-
talled on a roof where the inclination is
less than 15o or more than 32o, then a
different than the standard equipment
of the support base must be used,
similar to the one used for regions with
typhoons, hurricanes and heavy winds.
• For the safer installation of the solar
water heater on sloping roofs, it is neces-
sary to install the support base in such a
position so that the storage tank to be
placed exactly over a roof timber and in
no case way between two timbers.
• If the surface on which the solar water
heater will be installed (sloping or at) is
not compatible with the standard equip-
ment supplied with each appliance, then
a different equipment must be used.
The installer has to choose, propose
and install this different equipment,
always under the concurrent opinion of
the customer.
• For installation on a sloping roof, the “D”
plates must be screwed with the appro-
priate screws and nuts on the roof tim-
ber, in order to secure the right and safe
installation of the solar water heater.
• In regions subject to heavy snowfalls,
it is very important to ensure, that too
much snow doesn’t accumulate behind
the storage tank, and to check if the
supports of the standard equipment are
good enough to withstand the weight of
the expected snow. The same attention
must be paid, for regions with heavy
winds and storms. In these cases, the
storage tank must be placed in a stable
way on the roof and must be tightened
with the additional metal straps. It is
absolutely necessary to use the typhoon
set (page 22).
• The tubes of the solar water heater as
well as the cold/hot water piping must
be very well insulated.
• Special attention must be taken for the
lling and connection of the closed cir-
cuit. Only experienced technicians can
provide you with the connection and the
lling. Before lling the closed circuit
with thermal uid, the storage tank must
be completely lled with water.
• Before starting the installation of the
solar water heater, you must read care-
fully all the instructions, described and
illustrated in this manual.
• After you have nished the installation
clean the area where all the work took
place. Fill in the warranty with all the
required details and have customer sign
it. Advice customer to mail immediately
the coupon of the warranty to Helioakmi
S.A.
• The installation must comply with the
local and national regulations and lows
(plumbing, electricity, hygiene, urban
and others) that are into force in your
country.
• The observance of the instructions
stated on this manual is very important
and the non-observance may cancel the
validity of the warranty.
• Helioakmi S.A. declines any responsi-
bility of any kind, that may arise from a
defected installation or from an incorrect
manipulation or from any elements or
accessories that are integrated/tted on
the appliance.

8
A
U
U
D
D
C
E
ZZ
B
B
FF
C
Support base for 200, 260 & 300
(with 2 collectors)
Assembly diagram of the support base on a at surface
A
B
C
D
F
E
E
UZ
Z
A
U
U
C
D
D
C
E
Z
A
B
E
B

A
B
C
D
F
E
E
UZ
9
A
E
LENGTHS OF THE
SUPPORT BASE PLATES
A = 2015 mm
B = 2360 mm
C = 1150 mm
D = 930 mm
D = 1180 mm
E = 840 mm
E = 1150 mm
E = 1430 mm
Z + U
F = 930 mm
same FOR
ALL MODELS
FOR MODEL 120L
FOR MODELS 160-200-260-300L
FOR MODEL 120L
FOR MODELS 160-200L with one collector
FOR MODELS 200-260-300L with two collectors
SAME FOR ALL MODELS
ONLY for models 260-300L
ASSEMBLY INSTRUCTIONS
Before choosing the location and the installation point, ensure that it
is not shaded by any obstacle (trees, buildings… etc, see obstacle
diagram page 10).
The same support base is used for either sloping or at sur-
faces.
Connect the plates A, B, C, D, U and Z by screwing them tight as
shown in the drawings.
For models 260 and 300, screw also the plates F. Screw
gently the bottom plate E on the plates B.
attention
The top plate E is adjusted after the placement
of the collectors.
Plumb the support base on the
at surface’s level. Place
the collector(s), on the
support base and then
screw it with the moly
plugs and the screw nuts
on the concrete, according to your
country’s regulations.
Support base
for 120, 160 & 200
(with 1 collector)
Z
A
U
U
C
D
D
C
E
Z
A
B
E
B

A
C
D
D
C
E
A
B
B
E
Z
U
U
Z
Assembly diagram of the support base on a surface with maximum
inclination of 32°
Attention: Exclusively and only for the
solar water heater NOVASUN 120 and
for its installation on a tiled rood, two
additional plates “E” (840mm length) are
required. These additional plates replace
the plates “C” (1150mm length).
Alternatively, for the formation of the
parallelogram frame, you can use the
existing plates “E” (840mm length) in the
place of the plates “C”. The plates “C”
(1150mm), by making two holes
∅ 10 where required, will be
installed in the place of
the plates “E”.
10

A
C
D
D
C
E
A
B
B
E
Z
U
U
Z
11
Before choosing the location and the ins-
tallation point, ensure that it is not shaded
by any obstacle (trees, buildings… etc,
see obstacle diagram here below).
The same support base is used for
either slopping or at surfaces.
Connect the plates (A) and (C) so that to
form a parallelogram frame, as shown in
the drawing.
Bend the four (D) plates as shown in the
drawing. Remove the tiles, and place the
bended plates (D) on the wooden timbers
or on the concrete of the roof.
Screw tightly the parallelogram frame
(A)+(C) on the plates (D). Plumb the sup-
port base and screw the plates (D) on the
wooden timber of the roof (see drawing).
Screw the plates (B) on the parallelogram
frame (A)+(C). Ensure that the plates (B)
are tightly screwed on the holes of the
plate (A).
Screw gently the bottom plate E on the
plates B.
attention:
The top plate (E) is xed after the place-
ment of the collector(s).
note
The standard support base can be used
also for surfaces with minimum inclination
15o and maximum 32o.
For smaller or greater inclinations, diffe-
rent equipment is offered.
OBSTACLE TABLE
Latitude Distance between
collector and obstacle
0º- 25º A = 1,0 x B
25º- 35º A = 1,5 x B
35º- 45º A = 2,0 x B
45º- 50º A = 2,5 x B
50º ou plus A = 3,0 x B
A = 2015 mm
B = 2360 mm
C = 1150 mm
D = 930 mm
D = 1180 mm
E = 840 mm
E = 1150 mm
E = 1430 mm
Z + U
F = 930 mm
same FOR
ALL MODELS
FOR MODEL 120L
FOR MODELS
160-200-260-300L
FOR MODEL 120L
FOR MODELS 160-200L
with one collector
FOR MODELS 200-260-300L
with two collectors
SAME FOR
ALL MODELS
ONLY for
models 260-300L
LENGTH OF
THE SUPPORT
BASE PLATES
ASSEMBLY INSTRUCTIONS
Z
A
U
U
C
D
D
C
E
Z
A
B
E
B

12
01 Storage tank
01A+B Storage tank’s suspension point (used only in production process,
ignore them)
01C Handles
02 Filling pipe (for the closed circuit)
02A Safety valve 3 BAR
03 Elbow raccord (4 pcs)
04 Thermal uid inlet pipe (to the storage tank from the collector) (indi-
cation “jacket”)
05 Small connection tube
05A Insulated cover of the small connection tube
06 Raccord
07 Water-tight compression ring
(4 pcs).
08 Hot water outlet pipe
for home consumption
(indication: “hot outlet”)
09 Magnesium rod
09A Magnesium rod socket
09B Magnesium rod’s plug (ó”)
10 Thermal uid outlet pipe
(from the collector to the
storage tank)
11 Collector(s)
12 Pipe unions (collector connectors). Only for models
with two collectors
13 Bottom left hand collector pipe
13A Plug 1/2”
14 Filling pipe for the closed circuit
14A Plug 1/2”
15 Cold water inlet pipe
(indication: “cold inlet”)
15A Reducer (3/4” – 1/2”)
16 Thermal uid outlet pipe (from
the storage tank to the collec-
tor) (Indication: “jacket”)
17 Top right hand collector
pipe
17A Plug 1/2”
18 Large connection
tube with insula-
tion cover
19 Thermal uid
inlet pipe
(return to the
collector)
20 Protective side
cover
20A Face plate
Analytical description of the storage
tank’s and collector’s components
01
02A
0203 04 05 06
07
07 05A
12
13A
13 10 110307 05A09A 09 09B 19
03 040708

06
13
01A01B
20A 14A 17A
14 15A 15161712
19 03 07 07 18 20
18
20
17 17A 15A
15
18
03
03

14
Before the placement of the collectors on
the support base, loose the screws of the
bottom plate E, so that the bottom n of
the collector can pass easy between the
plates E and B.
The top plate (E) is xed after the pla-
cement of the collector(s).
Place and centralize the collector(s) on
the support base.
For the models 200,260 and 300, which
consist of two collectors, you must
connect them to each other by using
the pipe unions (12), supplied with each
appliance.
Secure the bottom part of the collector(s)
by screwing tightly the bottom plate E on
the plates B.
Screw tightly the top plate E, on the
plates B, securing the collector(s).
E
E
Z
20A
B
E
A
12
B
Installation instructions of the storage tank and collector on the support base

15
Installation instructions of the storage tank and collector on the support base
Place the face-plate (20A) on the U, and
secure it under the collector(s).
Then place the storage tank on the two U.
attention
a. Before placing the storage tank on
the two U, check carefully if the plates
U and Z are screwed tightly to the
plates B.
b. The electric resistance must be on
the right hand side, as we face the
appliance.
c. Ensure that the appliance does not
tilt from one or the other side and that
the tubes (02) and (14) of the storage
tank are vertical on the highest point
of the storage tank. Use necesserily
a plumb.
Z
B
E
U
20A
U

16
Put the plug (17A) on the pipe (17) which
is located on the top right hand side of
the collector (13) and the plug (13A) on
the pipe (13) which is located on the bot-
tom left hand side of the collector, and
use Teon or oakum for their complete
water tightness.
For models 200, 260 and 300,
which have two collectors, connect them
by using the collector connector (pipe
unions) (12), supplied with each applian-
ce.
17
17A
13A
12
Connection instructions of the storage tank, collector and components

03
18
16
15 15A
03
03
07
05
08
04
10
17
Connection instructions of the storage tank, collector and components
Screw the elbow raccords (03) on the
pipes of the storage tank (04) and (16)
with the indication “jacket” and on the
pipes of the collector(s) (10) and (19)
respectively.
Afterwards join the small connection
tube (05) onto (04) and (10) and the big
connection tube (18) onto (16) and (19)
respectively. Before connecting the
tubes (05) and (18) ensure that the
compression rings (07) have been
placed on the tubes.
Screw the non-return valve (15B) on the
inlet pipe (15) of the storage tank (indica-
tion: “cold inlet”).
For models 200, 260 and 300, use
the reducer 3/4”-1/2” (15A). Screw the
spherical switch (15C) on the non-return
valve.
note
In cases that you use the valve type
(15BC), use the appropriate for each
case procedure.
Connect the cold water supply to the
spherical switch and turn the cold water
supply on until the storage tank is com-
pletely lled. When you are lling the
storage tank with water, the outlet of hot
water (08) should be opened. Connect
the hot water supply to the storage tank
outlet pipe (08). (Indication: “hot outlet”).
After connecting all the ttings, check
very carefully all connections for their
complete water tightness.
attention
In regions where the temperature falls
bellow zero, ensure that the connection
tubes of the storage tank and collector
as well as the hot and cold water piping
to/from the solar water heater are well
insulated.
FOLLOW STEP BY STEP THE
INSTALLATION INSTRUCTIONS OF
THIS MANUAL.
ALL THE PLUMBING INSTALLATIONS
MUST BE MADE IN ACCORDANCE
WITH THE PLUMBING REGULATIONS
APPLICABLE IN YOUR AREA.

18
For antifreeze protection of the solar water
heater, please follow the ratio of antifreeze pro-
tection stated in the table here below.
Mix well the thermal uid with water.
Start lling the closed circuit with the
mixture, from the pipes (14) and (02).
The lling must be done alternati-
vely, from both pipes (14) and (02).
During the lling, we advice you to
shake the system, so that to ensure
that no air is trapped inside the sto-
rage tank and the collector.
Continue this procedure until the close
circuit is completely full.
The responsibility for the correct use of
the antifreeze liquid quantity is for the
account of the installer and in no case of
Helioakmi S.A.
The use of water only or other liquid may cancel the
validity of the warranty.
20
Place the protective side cover (20).
12
Add some more uid in the closed circuit,
until it overows from the tubes (14) and
(02). Screw the plug (14A) onto the tube
(14) and x the safety valve (02A) onto
the tube (02).
Check carefully all connections for com-
plete water tightness.
14
02A 14A 02
17A
After the lling of the closed circuit, it is
necessary to loosen the plug (17A) at
the top right hand of the collector, until it
starts dripping thermal uid (for models
200, 260 and 300 with two collectors,
loose also the top pipe union (12) in order
to release the air from the collector(s).
Tighten back the plug (17A) and the col-
lector connection (12) and check for their
complete water tightness.
Filling Instructions of the Closed Circuit with Thermal Fluid (for the solar water heaters of closed circuit)

14
02A 14A
02
1919
17A
After the lling of the closed circuit, it is
necessary to loosen the plug (17A) at
the top right hand of the collector, until it
starts dripping thermal uid (for models
200, 260 and 300 with two collectors,
loose also the top pipe union (12) in order
to release the air from the collector(s).
Tighten back the plug (17A) and the col-
lector connection (12) and check for their
complete water tightness.
Filling Instructions of the Closed Circuit with Thermal Fluid (for the solar water heaters of closed circuit)
MODEL
CLOSED CIRCUIT
TOTAL CAPACITY
TEMPERATURE
- 5ºC
- 11ºC
- 18ºC
- 20ºC
- 27ºC
- 36ºC
NOVASUN
120 x 2.10m2
9 lt
8 lt
1 lt
7 lt
2 lt
6 lt
3 lt
6 lt
3 lt
5,5 lt
3,5 lt
4,5 lt
4,5 lt
NOVASUN
160 x 2.60m2
11 lt
10 lt
1 lt
9 lt
2 lt
7,5 lt
3,5 lt
7,5 lt
3,5 lt
6,5 lt
4,5 lt
5,5 lt
5,5 lt
NOVASUN
200 x 2.60m2
13 lt
11,5 lt
1,5 lt
10,5 lt
2,5 lt
9 lt
4 lt
9 lt
4 lt
7,5 lt
5,5 lt
6,5 lt
6,5 lt
NOVASUN
200E x 4.20m2
18 lt
16 lt
2 lt
14,5 lt
3,5 lt
12,5 lt
5,5 lt
12 lt
6 lt
10,5 lt
7,5 lt
9 lt
9 lt
NOVASUN
260 x 4.20m2
21 lt
19 lt
2 lt
16,5 lt
4,5 lt
14,5 lt
6,5 lt
14 lt
7 lt
12,5 lt
8,5 lt
10,5lt
10,5 lt
NOVASUN
300 x 4.20m2
22 lt
19,5 lt
2,5 lt
17,5 lt
4,5 lt
15,5 lt
6,5 lt
14,5 lt
7,5 lt
13 lt
9 lt
11 lt
11 lt
NOVASUN
300E x 5m2
23 lt
20,5 lt
2,5 lt
18,5 lt
4,5 lt
16 lt
7 lt
15,5 lt
7,5 lt
13,5 lt
9,5 lt
11,5 lt
11,5 lt
RATIO
Water
Fluid
Water
Fluid
Water
Fluid
Water
Fluid
Water
Fluid
Water
Fluid
ANTIFREEZE PROTECTION RATIO TABLE FOR SOLAR WATER HEATERS
Please take into account also to the dilution table on the bottle of the antifreeze liquid.

20
Description of the parts of the electric resistance
and thermostat
21 Plastic cover
22 Electric resistance
22A Thermostat’s socket
22B Resistance’s cover
23 Base of multiple plug (for the elec-
tric lines)
24 Metal wires for the connections of
the resistance with the thermostat
25 Rubber ange for water tightness
26 Central nut
27 Tightening nuts
28 Grounding lug
29 Electric resistance’s lug
30 Grounding wire
31 Power wire
32 Multiple plug for power lines
33 Thermostat
34 Temperature control
35 Safety thermal switch (indication
“F” or “S”)
CONNECTION OF THE CABLES
1. Turn off the power main supply.
2. The cover of the electric resistance is on the right hand side of the
storage tank. Unscrew the two screws and remove the cover.
3. The thermostat is adjusted from the factory at 60oC. You can
adjust it at the temperature you wish, by using the temperature
control (34). In that case we advise that the temperature you will
x not to exceed 75oC.
4. Check the safety thermal switch (indication “F” or “S”) on the ther-
mostat. The safety switch is in operation when it is pushed in.
DIAGRAM OF ELECTRIC
CONNECTION OF THE
THERMOSTAT
29
22B 22A
22
25
28
26
3435
33
24
27
32
24
27
29
29
23
30
123 4
30
50
60
70
80
N L
22A
230 VAC
1 2 3 4
RESISTANCE