ATI Technologies WHC500 Reference manual

1936
ATI DI MARIANI SRL - Via E. Mattei, 461 –Zona Industriale No. 4 Torre del Moro - 47522 Cesena (FC) - Italy
Tel .: [phone] - Fax: [phone] - Web: www.atimariani.it - Email: [e-mail]
VAT NR. IT 00281090407 - REA 143693
CONDENSING GAS-FIRED STORAGE
WATER HEATER.
WHC400
WHC500
WHC700
WHC900
ENG - Manual of installation, use and
maintenance.
Read and follow these instructions before installing the unit.
Always keep on hand this manual during any servicing intervention.
This manual is also available in the electronic format and can be downloaded from the website
www.atimariani.it
Jan-19

ENG - Manual of installation, use and maintenance.
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Jan-19
INDEX
1. GENERAL WARNINGS ................................................................................................................................................................. 3
2. TRANSPORT, STORING AND RECYCLING .................................................................................................................................... 4
3. CORRECT DISPOSAL OF THE PRODUCT....................................................................................................................................... 4
4. CONTENT, WEIGHT AND PACKAGING DIMENSIONS .................................................................................................................. 5
5. APPLIANCE CATEGORIES ............................................................................................................................................................ 5
6. TECHNICAL SPECIFICATIONS ...................................................................................................................................................... 6
7. COUNTRIES OF DESTINATION AND GAS CATEGORIES................................................................................................................ 6
8. APPLIANCE DIMENSIONS AND FEATURES .................................................................................................................................. 7
9. THE INSIDE OF THE APPLIANCE .................................................................................................................................................. 8
10. FUNCTIONAL AND STRUCTURAL DESCRIPTION ..................................................................................................................... 9
11. COMPONENTS OF THE BOILER ............................................................................................................................................ 10
12. CONTROL PANEL DISPLAY .................................................................................................................................................... 11
13. SAFETY AND INSTALLATION LOCAL REGULATIONS.............................................................................................................. 11
14. INSTALLATION...................................................................................................................................................................... 13
15. POSITIONING THE APPLIANCE ............................................................................................................................................. 13
16. FLUE SYSTEM ....................................................................................................................................................................... 14
17. WATER CONNECTION .......................................................................................................................................................... 16
18. GAS CONNECTION................................................................................................................................................................ 17
19. ELECTRICAL CONNECTIONS.................................................................................................................................................. 17
20. STARTING AND TEMPERATURE ADJUSTMENT..................................................................................................................... 18
21. GAS SETTING AND CHANGING OF GAS TYPE ....................................................................................................................... 20
22. MENU PARAMETERS AND DESCRIPTION ............................................................................................................................. 23
23. ANTILEGIONELLA FUNCTION ............................................................................................................................................... 25
24. ELECTRONIC BOARD AND WIRING....................................................................................................................................... 26
25. OTHER SYSTEM FEATURES ................................................................................................................................................... 29
26. FAULTS ................................................................................................................................................................................. 29
27. SAFETY ANOMALIES ............................................................................................................................................................. 29
28. PROBES FAULTS ................................................................................................................................................................... 34
29. FAN FAULTS ......................................................................................................................................................................... 36
30. FAULTS FLOW....................................................................................................................................................................... 38
31. SERVICING THE HEAT EXCHANGER ...................................................................................................................................... 39
32. PERIODIC MAINTENANCE .................................................................................................................................................... 39
33. WARRANTY VALIDATION ..................................................................................................................................................... 39

ENG - Manual of installation, use and maintenance.
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1. GENERAL WARNINGS
THIS BOOKLET IS AN INTEGRAL AND ESSENTIAL PART OF THE APPLIANCE AND MUST BE KEPT WITH
CARE NEXT TO IT FOR ANY FUTURE REFERENCE. IT CONTAINS IMPORTANT INFORMATION
REGARDING SAFETY, INSTALLATION, OPERATION AND MAINTENANCE.
THE APPLIANCE IS DESIGNED FOR HOT WATER PRODUCTION ONLY: ANY OTHER USE OF IT IS
UNSUITABLE AND DANGEROUS.
THE APPLIANCE SHOULD NOT BE INSTALLED IN DAMP ROOMS AND HAS TO BE PRESERVED BY
SPRINKLINGS OF WATER OR OTHER LIQUIDS, TO AVOID DAMAGES TO ELECTRICAL AND THERMAL
DEVICES.
A QUALIFIED PERSON, WHO IS RESPONSIBLE FOR THE IMPLEMENTATION OF THE EXISTING SAFETY
STANDARDS, MUST PERFORM THE INSTALLATION. AN IMPROPER INSTALLATION, CAUSED BY THE
NON-OBSERVANCE OF THE MANUFACTURER’S INSTRUCTIONS, MAY CAUSE INJURY TO PERSONS,
ANIMALS OR DAMAGES, FOR WHICH THE MANUFACTURER DECLINES ALL RESPONSIBILITY.
KEEP ALL PACKAGING MATERIAL (PLASTIC BAGS, POLYSTYRENE, WOOD, CLIPS, ETC.) OUT OF REACH
OF CHILDREN AS IT MAY PRESENT A POTENTIAL HAZARD.
THE APPLIANCE IS NOT INTENDED FOR USE BY CHILDREN AGED LESS THAN 8 YEARS AND BY
PERSONS WITH REDUCED PHYSICAL, SENSORY OR MENTAL CAPACITIES, LACK OF EXPERIENCE OR
KNOWLEDGE, UNLESS THEY HAVE BEEN GIVEN SUPERVISION OR INSTRUCTIONS CONCERNING THE
USE OF THE APPLIANCE BY A PERSON RESPONSIBLE FOR THEIR SAFETY.
CHILDREN SHALL NOT PLAY WITH THE APPLIANCE.
CLEANING AND MAINTENANCE, INTENDED TO BE CARRIED OUT BY THE USER, SHALL NOT BE MADE
BY CHILDREN WITHOUT SUPERVISION.
IF THE APPLIANCE IS SOLD OR TRANSFERRED TO ANOTHER OWNER, MAKE SURE THAT THIS
BOOKLET STAYS WITH THE APPLIANCE, SO THE NEW OWNER AND / OR INSTALLER CAN CONSULT IT.
DO NOT PUT ANYTHING ON THE TOP OF THE APPLIANCE. IN ORDER TO AVOID DAMAGES CAUSED
BY FROST, DRAIN THE TANK COMPLETELY, IN THE EVENT THE APPLIANCE IS LEFT UNUSED FOR A
LONG PERIOD IN A NON HEATED ROOM. THE MANUFACTURER IS NOT RESPONSIBLE FOR FAULTY
OPERATIONS OR BROKEN PARTS CAUSED BY FROST AND FOR WATER LEAKAGE FROM THE PLANT.
TO GET THE BEST PERFORMACE AND THE WARRANTY VALIDATION, WE RECOMMEND TO FOLLOW
THE INSTRUCTIONS HERE BELOW AND TO USE ONLY ORIGINAL SPARE PARTS AND KITS PROVIDED
BY THE MANUFACTURER.
MORE APPLIANCES IN THE SAME ROOM, FOR A TOTAL THERMAL CAPACITY HIGHER THAN 35 KW,
ARE A HEAT STATION AND ARE SUBJECT TO THE PROVISION OF THE FIREMEN CIRCULAR NO. 68.
IT IS STRICTLY FORBIDDEN TO TAMPER ANY DEVICE FACTORY SET AND SEALED BY THE
MANUFACTURER.

ENG - Manual of installation, use and maintenance.
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2. TRANSPORT, STORING AND RECYCLING
• The appliance must be transported and stored under cover and protected from frost.
• The appliance must not be handled and / or laid horizontally: it can be transported only in a vertical position.
• Handle the unit by means of a forklift or a manual pallet truck. Enter the parallel arms of the forklift in the lower part of the
appliance, as shown in the picture below.
• Remove the packaging by undoing the 4 screws at the bottom corners of the appliance, then pull upwards the packaging,
being careful not to damage the appliance.
3. CORRECT DISPOSAL OF THE PRODUCT
The symbol shown on the equipment indicates that waste must be disposed of in “separate
collection” and so the product must not be disposed of together with urban waste. The user
must take the product to special “separate waste collection centres” provided by local
government, or deliver it to the retailer against the purchase of a new product. Separate
collection of waste and subsequent treatment, recycling and disposal operations promotes the
production of equipment with recycled materials and limits negative effects of waste. Illegal
disposal of the product leads to the enforcement of administrative penalties.

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4. CONTENT, WEIGHT AND PACKAGING DIMENSIONS
The appliance is delivered packaged in a wooden cage with appropriate protection. See table below for size.
Dimensions in mm - Weight in kilograms: Kg
WHC400
WHC500
WHC700
WHC900
A
820
820
1030
1030
B
1100
1100
1300
1300
C
1740
2100
1800
2170
Weight
with
packaging
203
229
259
297
5. APPLIANCE CATEGORIES
These appliances are classified as: "Condensing gas fired storage water heaters".
Gas Categories: I2H, I3P I2L and derived second categories
TYPE C Appliance classes (EN 483) (see table):
C63 appliance connected to an air intake and flue outlet
approved system and sold separately; the fan is upstream of
the heat exchanger.
C53 appliance connected to
two points having a different
pressure; the fan is upstream
of the heat exchanger.
C33 appliance connected to
coaxial or twin pipe flue
system so close to have the
same vertical wind conditions
(roof) with fan upstream of
the heat exchanger.
C13 appliance connected to
coaxial or twin pipe flue
system so close to have the
same wind conditions
(horizontally through the
wall) with fan upstream of
the heat exchanger.
C43 appliance connected to
coaxial or twin pipe flue
system so close to have the
same wind conditions, which
intakes air from the chimney
and with fan upstream of the
heat exchanger.
C83 appliance connected to
twin pipe flue system with air
intake from the outside and
flue outlet through the
chimney; the fan is upstream
of the heat exchanger.

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6. TECHNICAL SPECIFICATIONS
WHC400
WHC500
WHC700
WHC900
Classe efficienza sanitaria - efficiency class
A
B
B
A
Profilo di carico - load profile
XXL
XXL
XXL
XXL
Capacita’ nominale serbatoio - tank nominal capacity
l
395
500
700
856
Efficienza –efficiency
%
84
78
78
116
Portata termica nominale Q - nominal calorific flow rate QN
kW
25
25
25
25
Portata termica minima Q - minimum calorific flow rate Qm
KW
5
5
5
5
Potenza termica nominale P - nominal power output PN
KW
24,5
24,5
24,5
24,5
Potenza termica minima P - minimum power output Pm
KW
8,3
8,3
8,3
8,3
Consumo gas - gas consumption
m3/h
2,7
2,7
2,7
2,7
Temperatura fumi –flue gas temperature
°C
68
68
68
68
Valore di emissione di NOx - NOx emission value
mg/kWh
53
53
53
53
Pressione max acqua - max water pressure
kPa (bar)
600 (6)
600 (6)
600 (6)
600 (6)
ηcombustione - Η combustion
%
98
98
98
98
ηacqua - H water
%
99
102
100
100
Prelievo continuo Δ 25°c - Δ 25°C water spillage
l/h
841
841
841
841
Grado di protezione –protection level for electrical
appliance
IP
21
21
21
21
Potenza elettrica nominale - nominal electric power
W
51
51
51
51
Caratteristiche elettriche - Electrical characteristics
V/Hz
230V ~ 50Hz
230V ~ 50Hz
230V ~ 50Hz
230V ~ 50Hz
7. COUNTRIES OF DESTINATION AND GAS CATEGORIES
Country (EN ISO 3166-1):
Category:
gas type / pressure (EN 437):
AL
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
AT
I2H
G20 - 20 mbar
BE
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
BG
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
CH
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
CY
I2H
G20 - 20 mbar
CZ
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
DE
I2E
G20 - 20 mbar
DK
I2H
G20 - 20 mbar
EE
I2H
G20 - 20 mbar
ES
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
FI
I2H
G20 - 20 mbar
FR
I2H, I2Er, I2Esi, I3P II 2H3P, II2Esi3P
G20 - 20 mbar; G25 - 25 mbar; G31 - 37 mbar
GB
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
GR
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
HU
I2H, I3P
G20 - 25 mbar; G31 - 37 mbar
IE
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
IT
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
LT
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
LU
I2H
G20 - 20 mbar
LV
I2H
G20 - 20 mbar
MK
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
MT
I2H
G20 - 20 mbar
NL
I2L, I3P II2L3P
G25 - 25 mbar; G31 - 37 mbar
NO
I2H
G20 - 20 mbar
PL
I2E; I3P II2E3P
G20 - 20 mbar; G31 - 37 mbar
PT
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
RO
I2H, I2E; I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
SE
I2H
G20 - 20 mbar
SI
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
SK
I2H, I3P II 2H3P
G20 - 20 mbar; G31 - 37 mbar
TR
I2H
G20 - 20 mbar

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8. APPLIANCE DIMENSIONS AND FEATURES
WHC400
WHC500
WHC700
WHC900
A FLUES IN & OUT
1810
1810
1810
1810
B HEIGHT
1699
2049
1754
2114
C HOT WATER OUTLET G 1-1/4”
1585
1936
1641
1999
D SAFETY VALVE
1443
1443
1462
1462
E RETURN G 1”
733
733
752
752
F DEPTH
990
990
1190
1190
G COLD WATER INLET G 1-1/4”
229
229
205
205
H WIDTH
710
710
920
920
Dimensions in millimeters: mm

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9. THE INSIDE OF THE APPLIANCE
The following instructions will show the internal components of the heating boiler, their configuration and maintenance.
Remove the frontal casing of the appliance to carry out these interventions.
1. remove the screws from both the left and right side, by means of a common screwdriver (not supplied);
2. remove the screws from the lower part of the appliance;
3. paying attention to the upper gland, unscrew the nut on the opposite side of the sheet, so to push the cable out of the
sheet slot, then leave the cable free;
4. it is now possible to remove the whole front bonnet by means of the handles on both sides of the appliance.
To reassemble the bonnet, follow the instructions in reverse.
PAY ATTENTION TO THE STEEL RIMS, BECAUSE THEY MAY BE SHARP: THE USE OF PROTECTIVE EQUIPMENT IS RECOMMENDED.
THE MANUFACTURER DOES NOT ASSUME ANY RESPONSIBILITY FOR POSSIBLE INJURIES.

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10.FUNCTIONAL AND STRUCTURAL DESCRIPTION
The purpose of this appliance is to allow the heat exchange between the combustion products of the premix burner and the
water stored in the tank through a heat exchanger that is in contact with the burner.
The combustion is completely sealed with respect to the place where the appliance is installed, taking in the air required for
combustion from the outside and discharging the combustion products always outside.
The sealed combustion chamber is placed in the front part of the appliance, inside the casing.
A siphon, which grants the condensate drain, is placed at the bottom of the appliance.
TANK
It is built with a sturdy sheet and grants a remarkable resistance to pressure. It is also subject to an internal glass lining
treatment. A Ø120 flange allows the inspection and cleaning of its internal surface.
HEATING BOILER
It is placed in the front part of the appliance and is composed of: burner, heat exchanger, gas valve, premix fan. The chamber is
airtight with respect to the place where the appliance is located.
3-WAY VALVE
It is used to allow an accurate maintenance of the internal heat exchanger.
WATER PUMP AND FLOWMETER
They are located under the boiler. The water pump collects the water from the tank and pushes it vertically towards the heat
exchanger. The flowmeter senses the flow rate values and transmits them to the control board.
FLUE KITS (it is compulsory to install the kit provided by the appliance manufacturer)
To be chosen amongst those available, according to the installation requirements. It allows the connection of the combustion
chamber with the outside, bringing the combustion air to the burner and discharging flues.
MAGNESIUM ANODE
The appliance is factory equipped with two magnesium anodes in order to protect the device from galvanic currents that can
corrode the interior surface of the appliance. One anode is installed on the inspection flange, the other one is located in the
upper part of the appliance.
A. AIR IN & OUT
B. CONTROL BOX CASING
C. CONTROL PANEL DISPLAY
D. HEATING BOILER
E. 3-WAY VALVE
F. FLOWMETER
G. WATER PUMP
H. BASEMENT –HANDLING POINT
I. LOWER PROBE
J. INSPECTION FLANGE WITH ANODE
K. CONDENSATE DRAIN
L. MIDDLE PROBE
M. STORAGE TANK
N. UPPER ANODE
O. BALL VALVE

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11.COMPONENTS OF THE BOILER
A. CONTROL BOX CASING
Protective cover of the electronic control box and earthing
point.
B. CONTROL PANEL DISPLAY
It is used by the operator to ensure the full control of the
appliance software.
C. GAS VALVE
Located on the left side of the heat exchanger, it adjusts
the inlet gas flow to the premix fan.
D. HEAT EXCHANGER
It consists of a stainless steel coil and allows the heat
exchange between the combustion heat and the sanitary
hot water of the boiler.
E. AIR CHANNEL
It is used for channeling the incoming air to the injector
holder. The air intake is done through the coaxial outer
tube.
F. WATER INLET
Copper-brass pipe for the water extraction from the boiler.
G. CONDENSATE DRAIN
A siphon is located under the boiler: it collects condensate.
It is necessary to discharge condensate by means of a
flexible tube and to collect it in a system specially conceived
for this purpose.
H. FLUE OUTLET
Flue pipe. A condensate trap is placed at its bottom.
I. FAN
The fan is used to mix air and gas before the burner.
J. WATER OUTLET
Copper-brass pipe for the hot water outlet from the heat
exchanger.
K. ELECTRODES
Two electrodes (an ingnition and a detection one) are
located in the upper part of the heat exchanger.
L. GAS INLET PIPE
copper-brass pipe for the gas inlet into the appliance.