Heatmaster 35 TC, 85 TC Installation, Operating And Servicing Instructions

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EN • 1

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

Installation, Operating and

Servicing Instructions

Page 2

EN • 2

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

WARNINGS 3

Who should read these instructions 3 Symbols 3 Recommendations 3 Applicable standards 3 Warnings 3

INTRODUCTION 4

Totally condensing 4 Operating mode 4 Description of the specifications 6 Production of hot water 6 Frost protection 6

USERS GUIDE 7

Direction for use 7 Settings parameters 7

TECHNICAL CHARACTERISTICS 8

Natural gas categories 9 Propane categories 9 Domestic hot water features 9

ELECTRICAL CONNECTION 10

Wiring diagram 10

INSTALLATION INSTRUCTIONS 11

Dimensions 11 Hydraulic connections 11 Boiler room 11

INSTALLATION 12

Connection to the chimney 12 Connection to the gas 13 Domestic hot water connection 13 Heating connections 14 Installation of a single high temperature circuit with room thermostat ACV 15 control 15 Installation of a weather depending heating circuit high or low temperature 16 Installation of two heating circuit controlled by control unit and ZMC-1 module 18

COMMISSIONING AND MAINTENANCE 20

Commissioning the system 20 Inspection and maitenance 20 Temperature sensor resistance tables 20 Disassembling the burner 21 Disassembling and checking the electrode 21 Cleaning the heat exchanger 21

MCBA PARAMETERS FOR THE SPECIALIST 22

Standby mode 22 Setting the MCBA parameters 23 Request for information on the installation 24 Entering the code 24 MCBA parameters with code restricted access 25 Communication mode 28 Error mode 28 Safety stop [error mode] 29

INDEX

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ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

WHO SHOULD READ THESE INSTRUCTIONS

These instructions should be read by:

- the specifying engineer

- the installer

- the user

- the service engineer

SYMBOLS

The following symbols are used in this manual:

• The parts may only be replaced by genuine factory parts. You will find a list of the spare parts and their ACV reference number at the end of this document.

• The burners are preset in our factory for use with natural gas

[equivalent to G20].

• Specific regulation applicable in Belgium:

The CO2 level, the air and gas flows and the gas / air ratio

are factory set . Any field adjustments of those settings is not allowed in Belgium.

• It is important to switch the boiler off before carrying out any work.

• There are no user accessible parts inside the boiler casing.

APPLICABLE STANDARDS

The appliances carry the CE mark in accordance with the standards in force in the various countries (European Directives 92/42/EC “Efficiency”, 90/396/EC “Gas appliances”). They also carry the “HR-TOP” label (Gas condensation boilers).

WARNINGS

IF YOU SMELL GAS:

- Immediately isolate the gas supply.

- Open windows and doors to ventilate the area.

- Do not use any electrical appliances and do not operate any

switches.

- Immediately notify your gas supplier and/or your installer.

This documentation is part of the information delivered with the appliance and must be given to the user and stored in a safe place!

An approved installer must carry out the assembly, commissioning, maintenance and repair of the system, in accordance with current standards in force.

ACV shall not accept any responsibility for damage caused by non-compliant location of the system or by use of the parts or connections not approved by ACV for this application.

The manufacturer reserves the right to change the

technical characteristics and specification of its products without notice.

The availability of some versions and their accessories

is market dependant.

WARNINGS

RECOMMENDATIONS

• Please, carefully read this manual before installing and commissioning the boiler.

• It is prohibited to carry out any modifications to the inside of the appliance without the manufacturer’s prior and written agreement.

• The product must be installed and serviced by trained engineers, in compliance with current standards.

• Any failure to follow instructions relating to tests and test procedures may result in personal injury or risks of pollution.

• To guarantee safe and correct operation of the appliance, it is important to have it serviced and maintained every year by an approved installer or maintenance company.

• In case of anomaly, please call your service engineer.

• Despite the strict quality standards imposed by ACV during the manufacture, inspection and transport of its appliances, you might notice some errors. Please report immediately any fault to your approved installer. Remember to note the fault code displayed on the screen.

Risk of scalding

Essential instruction for the safety of persons and the environment.

Danger of electrocution.

Essential instruction for the correct operation of the installation.

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ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

TOTALLY CONDENSING : The HeatMaster

TC combines the unique ACV Tank-in-Tank concept with a dual primary circuit resulting in exceptional performance from a totally condensing combination boiler.

Tank-in-Tank technology

ACV’s advanced implementation of thermal storage technology is tried and tested and is remarkably simple, efficient and reliable. At the heart of the HeatMaster® TC is a stainless steel tank through which the flue tubes pass. This is surrounded by a mild steel shell containing the primary water, which extends down to the combustion chamber and even around the flue tubes. The burner fires onto the primary water which indirectly heats the stainless steel tank containing the hot water. As with all Tank-in-Tanks, this is corrugated over its full height and is suspended in the HeatMaster® TC by its hot and cold water connections. The area of the heat transfer surface is therefore much greater than that of standard direct fired water heaters. A much larger heat transfer surface means that Tank-in-Tank units recover much faster than any other kind of hot water storage device - and keeps boiler cycling to a minimum. The high storage temperature within the inner tank also results in exceptional hot water outputs.

Dual primary circuit technology

The HeatMaster® TC primary circuit is split into two sections - a high temperature upper circuit and a low temperature lower circuit, divided by a separation plate. The hot water storage tank is located in the upper circuit which always operates at a temperature of between 60°C and 90°C. This is ideal for hot water production as it maintains the stored water at constantly high temperatures, eliminating bacterial formation such as Legionellae, as well as resulting in high volume hot water production. The down-firing flue tubes pass through the upper circuit, through the separation plate and into the lower circuit. The primary water here operates at a temperature typically between 30°C and 60°C for heating (dependent on the heating return temperature), perfect for condensing when working in heating mode.

Dual coil technology

During hot water mode, the bottom circuit operates at a much lower temperature, typically 5°C to 20°C depending on the cold water inlet temperature. The incoming cold water enters the lower primary circuit via an indirect water preheater. As this preheater is wrapped around the lower flue tubes of the combustion chamber, it is able to absorb the remaining heat from the flue gases. The result is that during hot water mode the

HeatMaster® TC totally condenses whether on full or part-load.

INTRODUCTION

Heating

The heating return enters the lower circuit of the boiler, which allows the boiler to operate in condensing mode. The upper circuit of the

HeatMaster® TC is kept

at a consistently high temperature due to the internal shunt pump which ensures that the primary water circulates around the heat exchanger flue tubes.

Heating and hot water

Once up to temperature, the HeatMaster® TC is capable of producing heating and hot water simultaneously.

Hot water

With the upper circuit maintained at high temperature, the

HeatMaster® TC is always

ready to supply hot water on demand.

The cold water enters through the indirect water preheater at the base of the heat exchanger and is preheated before entering the hot water tank. The low temperature of the bottom circuit results in continuous condensation of the flue gases in hot water mode.

Operating modes

In both heating and hot water modes, the premix gas burner fully modulates the power to match the system demand.

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ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

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INTRODUCTION

HeatMaster® 35 TC

1. Flue connection concentric Ø 80/125 mm convertible to parallel connection 80/80 mm

2. Connection frame [optional]

3. Domestic hot water outlet

4. Heating flow

5. Stainless steel heat exchanger

6. Stainless steel Tank-in-Tank hot water store

7. Stainless steel cold water inlet coil

8. Heating return

9. Cold water inlet

10. Condenstrap

11. Modulating premix gas burner

12. Gas connection

13. Combustion chamber

14. Control panel

15. Primary heating circuit

16. Boiler shunt pump

17. Separation plate

18. Drain cock

HeatMaster® 85 TC

1. Flue connection concentric Ø 100/150 mm convertible to parallel connection Ø 100/100 mm

2. Domestic hot water outlet

3. Heating flow

4. Combustion chamber

5. Stainless steel heat exchanger

6. Stainless steel Tank-in-Tank hot water store

7. Auxiliary tank primary return

8. Indirect water preheater

9. Heating return

10. Cold water inlet

11. Separation plate

12. Gas connection

13. Modulating premix gas burner

14. Control panel

15. Primary heating circuit

16. Boiler shunt pump

17. Primary expansion vessel (2x)

18. Primary safety valve (3 bar)

19. Polyurethane foam insulation

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DESCRIPTION OF THE SPECIFICATIONS

The HeatMaster® TC is an hot water producer combined in a condensing boiler in accordance to the Belgium "HR-Top" standard. The boiler is certified compliant with "CE" standards as a connected appliance C13(x) - C33(x) - C43(x) - C53 - C83(x), but it can also be connected as an open appliance in category B23.

Lining

The boiler is protected by a steel lining that first of all undergoes a degreasing and phosphation process before being lacquered and heated at 220°C. The inside of this lining is coated with a layer of thermal and acoustic insulation, reducing losses to a minimum.

Heat exchanger

The core of the HeatMaster® TC features a new stainless steel heat exchanger. This piece of technology represents the fruit of exhaustive research and intensive laboratory testing. It reflects ACV’s eighty years of experience in using stainless steel for heating and hot water functions. The particular geometry of the exchanger pipes is calculated to obtain a very large Reynolds number throughout its cycles. The HeatMaster® TC achieves an exceptional output that remains stable throughout the boiler’s life, given that it causes no oxidation on the exchanger, which is manufactured entirely from quality steel.

Burner

ACV uses its BG 2000-M burner for the HeatMaster® TC: this is an air/gas premix burner providing safe and silent operation while limiting emissions (NOx and CO) to an incredibly low level. Although the ACV BG 2000-M boiler is very modern, it uses proven technology and is manufactured from standard spare parts that are easily available on the market.

Temperature regulation

The basic version of the HeatMaster® TC is fitted with a microprocessor controlled regulator (MCBA) which takes over both the safety functions (ignition, monitoring the flame, limiting the temperature, etc.) and control of the boiler temperature. This MCBA also includes a weather-dependent regulator. All you need to do is connect the outdoor temperature sensor available as an option to the device. However, this regulator can also operate with a standard on/off room thermostat In addition, with the combination of a weather -dependent regulator and a room thermostat, you can control the temperatures based on the weather with compensation for the indoor temperature. There are four user adjustable parameters. By entering a special maintenance code, qualified ins tallers can access several other parameters to adapt the boiler to special requirements. In principle, these parameters are factory set for all normal applications.

PRODUCTION OF HOT WATER

In addition to its exceptional hot water performances, the ACV Tank-in-Tank concept provides the follwoing advantages :

- A solution for scale deposits: thanks to the specially designed corrugations, the hot water tank expands and contracts during the heating cycle, preventing the formation of scale.

- A guarantee against the risk of Legionnellae Disease and bacteria: the hot water tank is fully immersed in the primary

circuit and the hot water is constantly kept at a temperature above 60°C.

- Exceptional resistance against corrosion and aggression: provided by the stainless steel.

FROST PROTECTION

The boiler is equipped with an integrated frost protection: as soon as the boiler temperature drops below 7°C, the system activates the central heating pump. As soon as the NTC1 flow temperature drops below 3°C, the system automatically ignites the burner until the temperature rises above 10°C. The pump continues to run for about 10 minutes.

If an outdoor temperature sensor is connected to the system, the pump is activated as soon as the outside temperature drops below the specified threshold.

To provide efficient protection for the whole system against frost, all the valves on the radiators and the convectors should be completely open.

INTRODUCTION

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ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

DIRECTIONS FOR USE

Your system must be checked once a year by an approved installer or maintenance company.

Starting the burner

During operation, the burner starts automatically as soon as the boiler temperature drops under the required set point and it stops as soon as the boiler reaches that temperature.

Control panel

SETTINGS PARAMETERS

Setting the domestic hot water temperature:

(Hot water temperature)

- Press Mode: The screen displays PARA.

- Press Step: the first character is 1 and the last t wo characters

give the current hot water temperature setting.

- To change this temperature, press + or - until the last two

digits show the desired temperature value.

- Press Store to save the new temperature setting.

- Press Mode twice to return to Pilot mode (normal operating

mode).

Enabling or disabling the hot water heating mode:

(hot water)

- Press Mode: The screen displays PARA.

- Press Step twice: the first charact er is 2 and the last two

characters give the current setting:

00 = disabled; 01 = enabled.

- To change this parameter, press + or - until the screen displays

the desired value:

00 = disabled; 01 = enabled.

- Press Store to save.

- Press Mode twice to return to Pilot mode (normal operating

mode).

Enabling or disabling Central Heating mode:

(heating)

- Press Mode: The screen displays PARA.

- Press Step three times: the firs t character is 3 and the last

two characters give the current setting:

00 = disabled; 01 = enabled.

- To change this parameter, press + or - until the screen displays

the desired value:

00 = disabled; 01 = enabled.

- Press Store to save.

- Press Mode twice to return to Pilot mode (normal operating

mode).

Setting the central heating temperature:

(maximum temperature for the heating circuit)

- Press Mode: The screen displays PARA.

- Press Step four times: the first character is 4 and the last

two characters give the current central heating temperature setting.

- To change this temperature, press + or - until the last two

digits show the desired temperature value.

- Press Store to save the new temperature setting.

- Press Mode twice to return to Pilot mode (normal operating

mode).

Fault:

The temperature setting for the appliance and the safety functions for its various parts are continuously monit ored by a regulator controlled by a microprocessor (the MCBA). In the event of a fault, this MCBA disables the appliance and displays an error code: the screen flashes displaying E as the first character, followed by the error code.

To reset the appliance:

- Press "Reset" on the screen.

- Contact your inst aller of the fault happens again.

USERS GUIDE

Heating system

The central heating circuit must be pressurized (see in the chapter “Installation” how to define the system pressure). The pressure indicator is located on the right-hand side of the display.

If your system needs to be refilled more than twice

a year, please contact your installer.

The CH pressure must be a minimum of 1 bar and mus t be checked by the end user on a regular basis. If the pressure drops under 0.5 bar, the integrated water pressure switch blocks the appliance until the pressure in the system returns to a level above 0.8 bar. The connection for a fill valve is provided underneath the appliance. The installer can also fit the system with a separate valve. Make sure that the appliance is powered off when filling the system. To do this, toggle the Star t/Stop switch located on the left of the screen to Off. (see the Control

panel).

For more information, please ask your installer when the system is delivered.

A safety valve is provided at the underneath of the appliance. If the system pressure exceeds 3 bars, this valve opens and drains the water from the system. In this case, please contact your installer.

bar

1O3

MCBA display

Pressure gauge

ON/OFF switch

Summer/Winter switch

Pre-cut for an optional Control Unit controller

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ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

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TECHNICAL CHARACTERISTICS

HeatMaster

35 TC

HeatMaster

85 TC

Central heating Natural gas Propane Natural gas Propane

Max. Input 80/60°C

34,9 30,6 85,0 [92,0] 85,0 [92,0]

Min. Input 80/60°C

10,0 10,0 17,2 17,2

Max. output 80/60°C

34,1 29,9 82,5 82,5

Min. output 80/60°C

9,8 9,8 16,7 16,7

Efﬁ ciency 30% load [EN677]

108,5 108,5 107,0 107,0

Efﬁ ciency domestic hot water mode [Δt = 30°C]

105,9 105,9 105,0 105,0

Flue gases

CO emissions max. / min. Input

mg/kWh

70 / 6 105 / 17 70 80

NOx emissions max. / min. Input

mg/kWh

59 / 29 72 / 31 70 / 30 85 / 40

NOx classiﬁ cation [EN483] 5 5 5 5

Flue gas temperature — max. Input 80/60°C

°C

60 60 65 65

Flue gas temperature — max. Input 50/30°C

°C

32 32 35 35

Mass ﬂ ow rate of combustion products

kg/h

55 46,5 137 [148] 134 [145]

Flue gas pipe - Max. pressure drop

130 130 150 150

Concentric ﬂ ue gas channel maximum length Ø 80 / 125 mm

20 20 20 20

Gas G20 / G25 G31

Category [varies by country]

I 2E[S]B — I 2Er

I 2L — I 2E

I 2ELL — I 2H

I 2HS

I 3P I 3+ I 3B

I 2E[R]B — I 2Er

I 2L — I 2E

I 2ELL — I 2H

I 2HS

I 3P I 3+ I 3B

Gas pressure

mbar

20 / 25 30 / 37 / 50 20 / 25 30 / 37 / 50

G20 gas ﬂ ow rate

3,7 — 8,99 [9,73] —

G25 gas ﬂ ow rate

4,3 — 10,46 [11,32] —

G31 gas ﬂ ow rate

— 1,25 — 3,48 [3,76]

max. Input

% CO

9,4 10,5 9,3 11,0

min. Input

% CO

9,0 10,1 8,9 10,6

Hydraulic parameters

Max. operating temperature

°C

90 90 90 90

Total capacity

189 189 315 315

Heating circuit capacity

108,5 108,5 125 125

Maximum operating pressure central heating

bar

3333

Heat exchanger pressure drop [ΔT = 20°C]

mbar

30 30 200 200

Electrical connection

Class

30 30 30 30

Supply voltage

V/Hz

230/50 230/50 230/50 230/50

Maximum absorbed electrical power

0,8 0,8 1,0 1,0

Weight empty kg 174 174 284 284

[…] = Domestic hot water mode

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ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

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TECHNICAL CHARACTERISTICS

Natural gas categories

BE FR NL LU DE

AT - CH - CZ - DK - ES - IT

FI - UK - IE - PT - SE - GR

I 2E(S)B

[G20] 20 mbar – [G25] 25 mbar

I 2E(R)B *

[G20] 20 mbar – [G25] 25 mbar

I 2Er

[G20] 20 mbar – [G25] 25 mbar

I 2L

[G25] 25 mbar

I 2E

[G20] 20 mbar

I 2ELL

[G20] 20 mbar – [G25] 20 mbar

I 2H

[G20] 20 mbar

I 2HS

[G20] 25 mbar

(*) HeatMaster® 85 TC

Propane categories

DK - NL

NO - IT

BE - CH - ES

FR - UK - IE

PT - FI - SE

IT - GR

AT - CH CZ - ES NL - DE LU - HU

BE - CH ES - FR

UK - IE

IT - PT

CZ - DK - ES

FI - FR - UK

IE - IT - NL

NO - PT - SE

AT - CH

CZ - DE

I 3P

[G31] 30 mbar

I 3P

[G31] 37 mbar

I 3P

[G31] 50 mbar

I 3+

[G30 + G31] 28 / 30 / 37 mbar

I 3B

[G30] 28 / 30 mbar

I 3B

[G30] 50 mbar

DOMESTIC HOT WATER FEATURES

HeatMaster

35 TC

HeatMaster

85 TC

Operating conditions at 80°C

Peak ﬂ ow at 40°C [ΔT = 30°C]

L/10’

419 850

Peak ﬂ ow at 40°C [ΔT = 30°C]

L/60’

1312 3177

Constant ﬂ ow at 40°C [ΔT = 30°C]

L/h

1057 2793

Peak ﬂ ow at 45°C [ΔT = 35°C]

L/10’

381 722

Peak ﬂ ow at 45°C [ΔT = 35°C]

L/60’

1080 2717

Constant ﬂ ow at 45°C [ΔT = 35°C]

L/h

898 2394

Peak ﬂ ow at 60°C [ΔT = 50°C]

L/10’

224 459

Peak ﬂ ow at 60°C [ΔT = 50°C]

L/60’

692 1778

Constant ﬂ ow at 60°C [ΔT = 50°C]

L/h

578 1583

Pre-heat time

minutes

37 35

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ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

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ELECTRICAL CONNECTION

WIRING DIAGRAM : HeatMaster® TC

1. Power supply 230 V

2. ON/OFF switch

3. Boiler shunt pump

4. Heating pump (optional)

5. Gas valve rectifier

6. 230Volt - 24Volt transformer

7. MCBA

8. Display

9. Water pressure switch

10. Fan PWM control

11. Summer/Winter switch

12. NTC1 flow sensor

13. NTC2 return sensor

14. NTC5 flue gas temperature

15. Room thermostat (optional)

16. NTC3 domestic hot

17. NTC4 outdoor temperature (optional)

18. NTC6 second heating circuit flow sensor (optional)

19. Zero volt of 24V circuit.

20. Safety contact thermostat RAM (optional)

21. Ionisation and ignition cable

22. Burner power supply 230 V (only HeatMaster

85 TC]

B. Blue Bk. Black Br. Brown G. Grey Or. Orange R. Red V. Violet W. White Y/Gr. Yellow/Green

123 546

12345678910111213

230V

BUS B

BUS A

X11.

X12.

Y/Gr

OrG

BkBkB

Y/Gr Y/Gr

Y/Gr

X1.6

X1.5

X1.4

X1.3

X1.2

X10.6

X10.7

X10.1

X10.3

X1.1

X2.12

X2.11

X2.10

X2.9

X2.8

X2.7

X2.6

X2.5

X2.4

X2.3

X2.2

X2.1

X3.6

X3.5

X3.4

X3.3

X3.2

X3.1

X4.3

X4.2

X4.1

X5.4

X5.3

X5.2

X5.1

1010

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INSTALLATION INSTRUCTIONS

Min. 300 mm

Min. 25 mm Min. 25 mm

bar

1O3

BOILER ROOM

- Make sure that all air vents are unobstructed any times.

- Do not store any flammable products in the boiler room.

- Do not store any corrosive products, paint, solvents, salts, chlorine products and other detergent products near the appliance.

- If you smell gas, do not switch on any lights, turn off the gas tap at the meter, ventilate the rooms and contact your installer.

ACCESSIBILITY

The appliance must be positioned in such a way to be accessible any time. In addition, the following distances are required around the appliance.

DIMENSIONS

35 TC

85 TC

A mm 1720 2145

B mm 600 690

C mm 500 580

D mm 80 100

E mm 125 150

F mm 140 160

G mm 1700 2095

H mm 670 725

I mm 110 125

J mm 100 105

K mm 200 270

L mm 960 1210

M mm - 200

N mm 170 235

O mm 230 240

Weight empty (kg] 174 284

bar

1O3

HYDRAULIC CONNECTIONS HeatMaster® 35 TC HeatMaster® 85 TC

Heating connection [F] Ø 1" 1"1/2

Domestic hot water connection [M] Ø 1" 1"1/2

Gas connection [M] Ø 3/4" 3/4"

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ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

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INSTALLATION

bar

2 1O3

1000 mm

2000 mm

Sample calculation:

The diagram below consists of the following parts: pipe with monitoring section + 2 * 90° pipe bends + 2 metres of horizontal pipe + 2 * 45° pipe bends + (2 + 1 + 1) metres of vertical pipe and fall back + discharge.

Therefore, the resistance of this system is as follows:

2.5 + (2 x 6.0) + (2 x 5.0) + (2 x 4.0) + (4 x 5.0) + 20 = 72.5 Pa.

This value is less than the maximum authorised resistance, therefore the installation is compliant.

CONNECTION TO THE CHIMNEY

- The chimney connections must comply with the applicable standards (in Belgium: NBN D51-003), the local energy supplier’s instructions, the fire regulation and neighbourhood good practices.

- The HeatMaster® TC has an inbuilt gas/air ratio regulator, which makes it largely independent of the pressure drop in the air intake and flue gas extraction system. However, the maximum pressure drop for this system may not be exceeded, or the pressure will diminish. Nevertheless, the gas/air ratio regulator continuously guarantees optimum combustion with very low emission levels.

- To avoid any condensate flow through the terminal, the horizontal flue gas pipes must always be installed with a min. slope of 5 mm per meter, upwards from the boiler side.

- There must be no obstruction or openings for any other appliances within a radius of 0.5 metres around the flue terminal of the HeatMaster® TC.

- The maximum flue resistance is 130 Pascal for the

HeatMaster® 35 TC and 150 Pascal for the HeatMaster® 85 TC. You can use the following table as the basis for calculating

this value: (please also refer to the specimen calculation presented

under the table).

C53

C33

150 min.

120

C13

B 23

C43

C43C33

bar

2 1O3

bar

1O3

bar

2 1O3

bar

2 1O3

Options for connection to the chimney

Table of flue resistance in Pascal

(1 Pascal = 0,01 mbar)

Pipe

concentric

Air inlet

separate

Air extraction

separate

35 TC

Ø 80/125

85 TC

Ø 100/150

35 TC

Ø 80

HM 85 TC Ø 100

35 TC

Ø 80

HM 85 TC Ø 100

1 m straight pipe

5.0 13,5 1.5 4,1 2.0 5,5

Pipe with a monitoring section

2.5 6,8 — — 1.0 2,7

90° pipe bend

6.0 16,4 1.9 5,2 3.4 9,3

45° pipe bend

4.0 10,9 1.3 3,5 2.3 6,3

Vertical pipe

20.0 54,5 — — — —

Horizontal pipe

15.0 40,9 — — — —

This table is based on the equipment offered by ACV and cannot be applied generally.

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INSTALLATION

CONNECTION TO THE GAS

- The HeatMaster® TC is fitted with a Ø 3/4” male fitting connec tor, on which you can connect the gas tap.

- The gas connection must comply with the applicable regulations (e.g. NBN D51-003 in Belgium) in the country of installation.

- Where there is a risk of dirt stemming from the network, place a gas filt er upstream from the connection.

- Drain the gas pipe and check in minute detail that all the boiler pipes, both inside and outside, are sealed.

- Check the gas pressure in the system.

Consult the technical characteristics.

- Check the gas pressure and consumption when commissioning the appliance.

DOMESTIC HOT WATER CONNECTION

Before pressurising the central heating circuit

(primary) you should first pressurise the domestic hot water tank (secondary) .

The HeatMaster® TC boiler can be connected direc tly on the domestic hot water circuit.

Flush out the system before connecting the domestic hot water part.

The installation must be fitted with an approved safety unit with a 7-bar safety valve, a non-return valve and a shut-of f valve.

During the heating process, the domestic hot water dilates and the pressure increases. As soon as the pressure exceeds the safety valve setting, the valve opens and discharges a small quantity of water. Using a hot water expansion vessel

(2 litres at least) will prevent this phenomenon and reduce

water hammer effect.

The hot water output temperature may reach temperatures in excess of 60°C, which can cause burns. We therefore recommend that that you install a the rmostatic mixer immediately after installing the appliance.

If stop valves are used in the domestic hot water

system, they can cause pressure waves when closed. Use devices designed to reduce water hammer to avoid this phenomenon.

1. Cold water supply tap

2. Non-return valve

3. Pressure reducing valve

4. Safety group

5. Hot water expansion vessel

6. Thermostatic mixer

7. Drawoff tap

bar

1O3

Page 14

EN • 14

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

HEATING CONNECTIONS

Recommendations

Before pressurising the central heating circuit

(primary) you should first pressurise the domestic hot water tank (secondary) .

- The central heating system must be completely flushed out wi th tap water before connecting the boiler.

- The central heating safety valve is incorporated under the appliance and must be routed to the drain with an open connection (to allow inspection).

- A temperature homogeneisation pump fits the boiler. That pump runs aswell during hot water mode aswell in heating mode. The speed selection of the pump must be set to 3.

- Fill the system with fresh water. Contact your ACV representative about the use of inhibitors.

- It is possible that the pumps are locked due to the

presence of residual water from tests completed on the appliance. Therefore, we recommend that you unblock the pumps before filling the appliance.

- You will find the connection for the filling valve and/or drainage valve on the bottom of the appliance. Fill the appliance to a minimum pressure of one bar. Drain the whole system and re-fill the appliance to a pressure of 1,5 bar.

- Fit the condenstrap, fill it with t ap wat er and connect the hose to the drain using a connection with an inspection section. Make sure you prevent the freezing of the condensates.

INSTALLATION

HEATING CONNECTIONS : GENERAL

1. Isolating valve, heating system

2. Safety valve calibrated to 3 bar, with pressure gauge

3. System filling valve

4. Expansion vessel

5. Drain cock

6. Condenstrap

7. Heating pump

bar

1O3

Page 15

EN • 15

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

INSTALLATION

INSTALLATION OF A SINGLE HIGH TEMPERATURE CIRCUIT WITH ROOM THERMOSTAT ACV 15 CONTROL

General diagram

The On/Off room thermostat controls the central heating system (radiators only).

The pump is powered as soon as the room thermost at generates an heat demand.

Advantages for the user:

- Simplicity of the system

- Direct connecton to existing installations

ACV 15

MCBA

Factory

setting

Typical

setting Description

00 : Heating mode “OFF” 01 : Heating mode “ON”

Setting temperature for the heating water (adjustable between 30 and 85°C).

00 : Using a outside temperature sensor and a room thermostat

12345678910111213

3456789

11 12 13

123 546

3546

Remove this shunt before connectiong a room thermostat

Optional accessories

Code Description

10800018 Room themostat ACV 15

10800097

[HM 35 TC]

High temperature kit DN20

Including: one circulation pump, two isolating valves, check valve, two thermometers

10800107

[HM 85 TC]

High temperature kit DN32

Including: one circulation pump, two isolating valves, check valve, two thermometers

Page 16

EN • 16

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

INSTALLATION

General diagram

This is a simple way to control two heating circuits (radiators or floor heating) with weather depending control.

Advantages for the user:

- Comfort

- Efficiency

RAMNTC12K

MCBA

AF120

ACV 15

AM3 - 11

SQK 349

INSTALLATION OF A WEATHER DEPENDING HEATING CIRCUIT HIGH OR LOW TEMPERATURE

Optional accessories

Code Description Code Description

10800018 Room themostat ACV 15 10510100

Outside temperature sensor 12kΩ — AF120

10800095

AM3-11 module

Controls the second heating circuit

- communicates directly with the MCBA

10800152

[HM 35 TC]

Low temperature kit DN20

Including: one circulation pump, two isolating valves, check valve, two thermometers, the 3-way valve with integrated bypass

537D3040

Contact sensor 12kΩ

To be mounted on the outlet of controlled circuit

10800106

[HM 85 TC]

Low temperature kit DN32

Including: one circulation pump, two isolating valves, check valve, two thermometers, the 3-way valve with integrated bypass

10510900

Contact thermostat RAM 5109

Required to protect all ﬂ oor heating circuits

10800019

Servomotor SQK 349

Electromechanical servomotor SQK 349 for the three-way valve included in low temperature kit

(opening times :

150 seconds)

Page 17

EN • 17

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

INSTALLATION

Factory

setting

Typical

setting Description

Maximum setpoint in domestic hot water mode

00 : Domestic hot water mode “OFF” 01 : Domestic hot water mode “ON”

00 : Heating mode “OFF” 01 : Heating mode “ON”

Maximum temperature of the heating circuit (must be higher than hot water setpoint)

Minimum outside temperature [T4] (adjustable between -20 and 10°C).

Maximum outside temperature [T4] (adjustable between 15 and 25°C).

10 : Heating pump controlled by room thermostat - hot water priority active 21 : Heating pump runs continuously - hot water priority active 50 : Heating pump controlled by room thermostat - hot water priority not active 61 : Heating pump runs continuously - hot water priority not active

Maximum temperature of the heating circuit

Minimum temperature of the heating circuit

PhPE

12345678910111213

To be wired in accordance with the applicable regulations.

Outside T° (°C)

-20-25 -10-15 0-5 1052015 25

P39

P40

P6 P7

T° departure boiler (°C)

Page 18

EN • 18

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

INSTALLATION

General diagram

This configuration controls two heating circuits (radiators or floor heating). In addition, the Room unit features a remote monit oring of the two circuits

You can adjust those t wo circuits depending on the outside temperature.

This is the ideal configuration for floor heating with additional heating provided by radiators.

You can select various heating functions, and program up to three weekly schedules, as well for the central heating as for the hot water production.

INSTALLATION OF TWO HEATING CIRCUIT CONTROLLED BY ROOM UNIT AND ZMC-1 MODULE

Optional accessories

Code Description Code Description

10800034

Room Unit RSC

Supplied with outside temperature sensor

10800077

[HM 35 TC]

Collector 2 circuits DN20

With bypass, connecting tubes and integrated wall brackets

10800119

ZMC-1 module (kit)

Controls the second heating circuit

- alarm contact - operates only in conjonction with the Room Unit RSC.

10800152

[HM 35 TC]

Low temperature kit DN20

Including: one circulation pump, two isolating valves, check valve, two thermometers, the 3-way valve with integrated bypass

10800036

Clip-in interface RMCIEBV3

Enables communications between the MCBA and the Room Unit RSC

10800104

[HM 85 TC]

Collector 2 circuits DN32

With integrated wall brackets

10800045

Contact sensor 2kΩ — VF202

To be mounted on the outlet of controlled circuit

10800142

[HM 85 TC]

Connection kit DN32 to the manifold

Including: two ﬂ exible 1"1/2 hoses and 1"1/4 reduction ﬁ ttings

10510900

Contact thermostat RAM 5109

Required to protect all ﬂ oor heating circuits

10800106

[HM 85 TC]

Low temperature kit DN32

Including: one circulation pump, two isolating valves, check valve, two thermometers, the 3-way valve with integrated bypass

10510100

Outside temperature sensor 12kΩ — AF120

10800019

Servomotor SQK 349

Electromechanical servomotor SQK 349 for the three-way valve included in low temperature kit

(opening times :

150 seconds)

RAM

MCBA

AF120

Room Unit

SQK 349

VF202

SQK 349

ZMC1

VF202

Page 19

EN • 19

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

INSTALLATION

Factory

setting

Typical

setting Description

Maximum setpoint in domestic hot water mode

00 : Domestic hot water mode “OFF” 01 : Domestic hot water mode “ON”

00 : Heating mode “OFF” 01 : Heating mode “ON”

Maximum temperature of the heating circuit (must be higher than hot water setpoint)

AV MPK ZU AUF

24V

A B VF VE

ZMC1

AV MPK ZU AUF

24V

A B VF VE

ZMC1

1 2 3 4 5 6 7 8 9 10111213

1 2 3 4 5 6 7 8 9 10 11 12 13

12 AB

To be wired in accordance with the applicable regulations.

10800036: Interface address “0”

= 7

= 6

= 5

= 4

= 3

= 2

= 1

= 0

Page 20

EN • 20

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

Réf. 3: The gas valve offset setting is a sealed factory setting. In principle, it may not be modified.

COMMISSIONING THE SYSTEM

Before pressurising the central heating circuit

(primary) you should first pressurise the domestic hot water tank (secondary).

Both the domestic hot water tank and the central

heating circuit must be filled before using the boiler.

- Slowly fill the tank and drain it by opening a hot water tap. Drain all the taps and check that there are no leaks in the domestic hot water system.

- Fill the whole system up to a minimum pressure of 1 bar (preferably 1.5 bar), using the boiler’s fill valve. Fill the system slowly. Also check that the automatic air vent on the tank is working. Check that there are no leaks in the central heating system.

- Vent the shunt pump and unblock it if necessary.

- Open the gas tap, drain the pipe and check that there are no leaks in the system.

- Place the condensing trap on the bottom face of the boiler and check it is fill with water.

- Connect the plug to the wall socket and power on the appliance. If needed, place the room thermostat to its highest position. The boiler should start. Check the gas pressure and allow the boiler to heat up for a few minutes. Set the boiler to High Power mode and check the CO2 level (see the table

of Technical Characteristics)

. Then, set the boiler to Low Power

mode and check the CO2 level again (see the table of Technical

Characteristics)

- Set the central heating and hot water temperatures following the values given in the Directions for Use.

- Drain the central heating system again and, if necessary, re-fill it.

- Make sure the central heating system is correctly balanced and, if necessary, adjust the valves to prevent a greater or lesser flow than planned to some circuits or radiators.

The condensate flow pipe diameter can not be decreased.

Moreover this pipe can never be blocked.

CHECKING THE SETTINGS

- Check that the parameters are set in accordance with the user’s needs: see page 3, Directions for Use.

- Check the boiler settings: this task can only be carried out by an ACV-trained installer or by the ACV maintenance department.

- Set the appliance to High Power mode by simultaneously pressing the mode and Plus keys.

COMMISSIONING AND MAINTENANCE

- Check the dynamic gas pressure at the gas valve (see diagram

below, ref. 1)

. This must be at least 18 mbars. Wait a few minutes for the appliance to heat up to a minimum temperature of 60°C. Check the CO2 setting using a measurement instrument. Please see in the Technical Characteristics for optimum value.

To increase the CO2 value, turn the venturi screw counterclockwise;

turn it clockwise to reduce the value (see diagram below ref. 2).

Then put the appliance to High Power mode by simultaneously

pressing the mode and Plus keys. Wait a few minutes to stabilise.

Check the CO2 value. It should be either equal to the full power

value or a maximum of 0.5% less than this value. If you record a significant deviation,please contact the ACV maintenance department.

INSPECTION AND MAINTENANCE

ACV recommends that you have your boilers inspected

and cleaned if need be at least once a year.

Plug out the appliance before undertaking any work, even if only recording measurements and adjusting the settings.

- Check that the condenstrap is not fouled, fill it, if need be, and check that there are no leaks.

- Check that the safety valves are operating correctly.

- Drain the whole system and if necessary re-fill the appliance to pressure of 1.5 bar.

If you have to refill your circuit more than twice a year,

please contact your installer.

- Check the boiler charge in High Power mode. If there is a big difference between this value and the original setting, the deviation could mean a blockage in the air intake pipes or flue gas extraction pipes, or that the exchanger has become fouled with an accumulation of dirt.

TEMPERATURE SENSOR RESISTANCE TABLES

T° [°C] R Ω T° [°C] R Ω T° [°C] R Ω

- 20 98200 25 12000 70 2340

- 15 75900 30 9800 75 1940

- 10 58800 35 8050 80 1710

- 5 45900 40 6650 85 1470

0 36100 45 5520 90 1260

5 28600 50 4610 95 1100

10 22800 55 3860 100 950

15 18300 60 3250

20 14700 65 2750

Page 21

EN • 21

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

COMMISSIONING AND MAINTENANCE

DISASSEMBLING THE BURNER

- Close the inlet gas valve.

- Remove the top front panel of the boiler.

- Unplug the fan plug(s), the ignition cable, the gas valve control and the ignition electrode earth.

- Loosen the 4 burner nuts using a ratchet wrench.

- Unscrew the three-way coupling on the gas pipe.

- In one unit, lift up the burner with the fan and the gas valve to remove them from the exchanger. Be careful not to damage the burner insulation in the exchanger.

- Check the condition of the insulation and the seals and replace them if necessary before re-assembling the burner following the same procedure but in the reverse order.

CLEANING THE HEAT EXCHANGER

- Remove the burner assembly as described above.

- Remove the burner gasket.

- Clean the combustion chamber using a vacuum cleaner.

- It could be necessary to clean the flue tubes by putting water in the combustion room. After that operation, it is necessary to clean the condensing trap.

- Check the burner insulation and the burner gasket; replace the parts if necessary.

- Check the igniter, replace if necessar y

- Reassemble the burner and check for leakages.

- Power up the appliance, set the boiler in full power mode and recheck for leaks.

- Check the gas pressure and the CO2 level as explained in previous paragraf.

DISASSEMBLING AND CHECKING THE ELECTRODE

- Remove the ignition cable.

- Remove the two fixing screws.

- Remove the electrode earth but make sure the serrated washer is fixed between the earth cable and the electrode when re-assembling.

- Check the condition of the seals and replace them if necessary before re-assembling the electrode following the same procedure but in the reverse order.

X 4

3 - 4

HeatMaster® 35 TC HeatMaster® 85 TC

Page 22

EN • 22

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

MCBA PARAMETERS FOR THE SPECIALIST

STANDBY MODE

Standby Mode

After you power down the appliance the screen displays Pilot mode, as shown in the figure above.

This is the standard MCBA mode. The MCBA automatically returns to this mode after 20 minutes if no keys have been pressed on the screen. Any parameters that were modified are then enabled.

The first character shows the current status of the boiler depending on the condition of both the boiler and the burner. The last 2 characters indicate the start temperature.

Once the cause of the blockage has been resolved, the burner starts automatically within 150 seconds at most.

If the burner is blocked for one of the reasons mentioned above, the screen display alternates between a 9 followed by the temperature (two last digits) and b with the error code.

Status Boiler function

Standby, no demand for heat

Fan first, fan after

Ignition

Operation of the boiler burner for the heating

Operation of the boiler burner for the domestic hot water

Air pressure limit or obtaining the number of start revolutions

The burner goes out when the specified value is reached. A demand for heat is present nonetheless.

Pump over-run time after the demand for central heating

Pump over-run time after the demand for domestic hot water

Burner blocked:

• : T1 > 95°C

•

: T2 > 95°C

•

: T2 - T1 > 10°C after 90 seconds

•

: dT1/dt > maximum gradient T1

•

: water pressure switch not off

•

: no fan signal

•

: erroneous fan signal

•

: T1 - T2 > Δ max.

•

: NTC3 short-circuit

•

: NTC5 short-circuit

•

: NTC3 interrupt

•

: NTC5 interrupt

•

: T5 > T5 max

•

: wait for the fan to start

Status Boiler function

Internal check — three-way valve

Boiler burner in hot water ready function

Test function: Central heating high power

Test function: Central heating low power

Test function: Boiler with fixed number of revolutions

Page 23

EN • 23

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

MCBA PARAMETERS FOR THE SPECIALIST

SETTING THE MCBA PARAMETERS

Parameter Mode

To access Parameter mode when the system is in Pilot mode, press MODE once.

To scroll through the list of parameters, simply press “step”. To modify a parameter value, use the + or - keys.

Then press “Store” to save the value you just changed. The screen flashes once to confirm the data has been saved.

To activate the parameters you changed, press MODE once more (which brings you into Info mode). However, if you do not press a key, the system returns to Pilot mode after 20 minutes and automatically enables the changes.

Factory setting

Key Screen Description of parameters

HeatMaster

35 TC

HeatMaster

85 TC

STEP

Adjusting the hot water temperature

STEP

Production of hot water

00 = Stop

01 = Start

STEP

Turn On/ Turn Off the heating

00 = Stop

01 = Start

STEP

Maximum temperature in Central Heating mode

Key Screen

MODE

Page 24

EN • 24

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

MCBA PARAMETERS FOR THE SPECIALIST

ENTERING THE CODE

Code Mode

You can access the following parameters by entering the service code:

• Parameters 5 - 42

• Communication mode

• Fan Speed mode

• ERROR mode

Only ACV authorised installers know the access code.

For further information, please contact our after-sales

department.

To access Code mode, press

MODE and STEP simultaneously

[only from Standby mode!].

MODE STEP

Press STEP once and the system displays C

in position 1, followed by arbitrary

characters in positions 3 and 4.

STEP

Press + or - to change the code.

+ -

Press STORE, the screen flashes briefly

to indicate that the code has been accepted.

STORE

Press MODE until the system

displays the correct mode.

REQUEST FOR INFORMATION ON THE INSTALLATION

Info Mode

To switch from Standby to Info mode, press Mode twice.

Key Screen

Description of

parameters

STEP

Boiler temperature T1 [Top of the primary]

STEP

Boiler temperature T2 [Top of the primary]

STEP

Hot water temperature T3 in °C [Bottom of the hot water tank]

STEP

Outdoor temperature T4 in °C

STEP

Flue gas temperature

STEP

Calculated boiler temperature in °C

STEP

Rate of increase of T1 temperature in °C/s

STEP

Rate of increase of T2 temperature in °C/s

STEP

Rate of increase in the hot water temperature in °C/s

STEP

Flow temparature of the heating circuit (with module AM3-11 only)

Key Screen

MODE

Press STEP until the system displays the information you need. The point located behind the first position flashes to indicate that the boiler is in INFO mode.

Page 25

EN • 25

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

MCBA PARAMETERS FOR THE SPECIALIST

Factory setting

Key Screen Description of parameters HM 35 TC HM 85 TC

STEP

Minimum temperature of the top part of the boiler in heating mode when using an outdoor sensor

In order to avoid cycling between heating and hot water mode, it is preferable to set that parameter higher than DHW set point [Para 1]

STEP

Minimum outdoor temperature [adjust the heating curve]

STEP

Maximum outdoor temperature [adjust the heating curve]

STEP

Frost protection temperature

STEP

Correction of outdoor temperature

STEP

Blockage T 0 = Disabled

STEP

Acceleration time lag 00 = Stop [minute]

STEP

Night reduction heating (°C)

STEP

Maximum number of fan revolutions in CH mode [rpm x 100]

Natural gas

Propane

STEP

Maximum number of fan revolutions in CH mode [rpm /min.]

Natural gas

Propane

STEP

Max. number of revs in domestic hot water mode [rpm x 100]

Natural gas

Propane

STEP

Maximum number of fan revolutions in domestic hot water mode [rpm]

Natural gas

Propane

STEP

Minimum number of fan revolutions [rpm x 100]

Natural gas

Propane

MCBA PARAMETERS WITH CODE RESTRICTED ACCESS

Page 26

EN • 26

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

MCBA PARAMETERS FOR THE SPECIALIST

Factory setting

Key Screen Description of parameters HM 35 TC HM 85 TC

STEP

Minimum number of fan revolutions [rpm]

Natural gas

Propane

STEP

Number of fan revolutions at ignition [rpm x 100]

Natural gas

Propane

STEP

CH pump over-run 0 = 10 sec. [step = 1 minute]

STEP

Domestic hot water pump over-run time [step = 10.2 sec]

STEP

Central Heating modulation hysteresis enabled

STEP

Central Heating modulation hysteresis disabled

STEP

Domestic hot water modulation hysteresis enabled

STEP

Domestic hot water modulation hysteresis disabled

STEP

Detection of domestic hot water hysteresis enabled

STEP

Detection of domestic hot water hysteresis disabled

STEP

Central Heating blockage time [sec. x 10,2]

STEP

Domestic hot water blockage time [sec. x 10,2]

STEP

Domestic hot water  Central Heating blockage time [sec. x 10,2]

Page 27

EN • 27

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

MCBA PARAMETERS FOR THE SPECIALIST

Factory setting

Key Screen Description of parameters HM 35 TC HM 85 TC

STEP

Re-modulate the difference T1 - T2

STEP

Bus address [-1 = disabled]

STEP

Temperature increase set point for the production of hot water

STEP

00 : High temperature circuit - heating pump controlled by room

thermostat - hot water priority active 10 : Controlled circuit (outside sensor + AM3-11 module) - heating pump controlled by room thermostat - hot water priority active 21 : Controlled circuit (outside sensor + AM3-11 module) - heating pump runs continuously - night reduction possible - hot water priority active 50 : Controlled circuit (outside sensor + AM3-11 module) - heating pump controlled by room thermostat - hot water priority not active 61 : Controlled circuit (outside sensor + AM3-11 module) - heating pump runs continuously - night reduction possible - hot water priority not active

STEP

Selection of the type of hot water production - That parameter is fixed in a HeatMaster® TC and must not be changed

STEP

Manual fan speed

STEP

First position: PWM pump level during burning in, not used

Second position: PWM pump level during over-run time, not used

STEP

T set hold boiler warm

STEP

Maximum temperature for the 2nd heating circuit

STEP

Minimum temperature for the 2nd heating circuit

STEP

2nd circuit temperature hysteresis

STEP

First position: Special pump [0 = disabled]

Second position: Minimum disable cycle [0 = disabled]

Page 28

EN • 28

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

ERROR MODE [with code]

ERROR mode indicates the most recent error, as well as the status of the boiler and its readings at the time this error occurred.

Key Screen

MODE

COMMUNICATION MODE [with code]

When in this mode, the system displays the communication between the boiler and the control module, the optional interface kit or the optional programmable room thermostat.

Key Screen

MODE

Key Screen

Description of

parameters

STEP

Code error of the last lock-out

STEP

Status of the boiler at the time of the error

STEP

Temperature T1 at the time of the error

STEP

Temperature T2 at the time of the error

STEP

Hot water temperature T3 at the time of the error

STEP

Outdoor temperature T4 at the time of the error

Key Screen

Description of

parameters

STEP

No communication

Communication between the boiler module and the optional control modules only

Communication between all the devices connected

Key Screen

Description of

parameters

MODE

Fan speed

STEP

The current fan speed is

5.500 rpm.

FAN MODE [with code]

MCBA PARAMETERS FOR THE SPECIALIST

Page 29

EN • 29

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

MCBA PARAMETERS FOR THE SPECIALIST

Codes Description of the fault Resolution of the fault

Abnormal flame signal

- Check the wiring (short-circuit in the 24V wiring)

- Check the electrode

- Replace the MCBA (water damage)

No flame signal after five attempts at firing the boiler

- Check the ignition cable

- Check the electrode and the position of the electrode

- Check that there is gas at the burner.

Rectifier or gas valve error Replace the rectifier or the gas valve

Persistent lock Press “RESET”

Internal error

If the problem persists after two RESET attempts, replace the MCBA.

EPROM error

If the problem persists after two RESET attempts, replace the MCBA.

Max input, thermostat open or 24V fuse gone.

- Check the wiring

- Check the 24V fuse on the MCBA.

- Shunt12-13 missing

Internal error

If the problem persists after two RESET attempts, replace the MCBA.

T1 > 110°C

- Check the NTC wiring and replace if necessary.

If NTC1 is OK, please verify that the water flows trough the boiler.

T2 > 110°C - Check the NTC wiring and replace if necessary.

T1 gradient too high

- Check that the pump is turning.

- If there is no problem with the pump, drain the system.

No fan signal present

- Check the fan control connection

- Check the fan wiring

If the problem persists after two RESET attempts, replace the MCBA.

The tacho signal of the blower does’nt go to zero.

- Check that the convection flow through the chimney is not high enough to rotate the blower.

If not, exchange the blower.

NTC1 short-circuit

- Check the connection of the NTC1 sensor

- Check the wiring of the NTC1 sensor

If the problem persists, replace the NTC1 sensor

NTC2 short-circuit

- Check the connection of the NTC2 sensor

- Check the wiring of the NTC2 sensor

If the problem persists, replace the NTC2 sensor

To unlock the system:

• Press RESET on the screen.

• Contact your installer if the fault happens again.

SAFETY STOP [ERROR mode]

If a fault occurs while the appliance is running, the system locks and the screen starts to flash. The first character is an E and the next two characters give the code for this fault, as illustrated in the table below.

Page 30

EN • 30

ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH

664Y2800.B

MCBA PARAMETERS FOR THE SPECIALIST

Codes Description of the fault Resolution of the fault

NTC3 short-circuit

- Check the connection of the NTC3 sensor

- Check the wiring of the NTC3 sensor

If the problem persists, replace the NTC3 sensor

NTC1 connection open

- Check the connection of the NTC1 sensor

- Check the wiring of the NTC1 sensor

If the problem persists, replace the NTC1 sensor

NTC2 connection open

- Check the connection of the NTC2 sensor

- Check the wiring of the NTC2 sensor

If the problem persists, replace the NTC2 sensor

NTC3 connection open

- Check the connection of the NTC3 sensor

- Check the wiring of the NTC3 sensor

If the problem persists, replace the NTC3 sensor

Internal error

If the problem persists after two RESET attempts, replace the MCBA.

Flue gas temperature too high (NTC5)

- Check the connection of the NTC5 sensor

- Check the wiring of the NTC5 sensor

If the problem persists, replace the NTC5 sensor

Error while reading the parameters

Press RESET

If the error persists, replace the MCBA.

Problem with the power supply to the fan

- Check the MCBA power supply voltage.

If it is OK, replace the fan.