E.C.A. SCOT SC 24 HM Installation and User Manual

HIGH EFFICIENCY

CONDENSING BOILER

SCOT SC 24 HM

INSTALLATION AND USER’S

OPERATING INSTRUCTIONS

E.C.A. Call Center 444 0 322

İÇİNDEKİLER

PREFACE................................................................................................................................................................................................................................................................................................................................................................................

GUARANTEE & SERVICE.........................................................................................................................................................................................................................................................................................................

DEFINITIONS OF SYMBOLS........................................................................................................................................................................................................................................................................................

SAFETY INSTRUCTIONS AND PRECAUTIONS............................................................................................................................................................................................................

PRODUCT..........................................................................................................................................................................................................................................................................................................................................................................

General Specicaons .............................................................................................................................................................................................................................................................................................................

Notaons Of Product ..................................................................................................................................................................................................................................................................................................................

Technical Data.....................................................................................................................................................................................................................................................................................................................................................

BOILER PACKAGING............................................................................................................................................................................................................................................................................................................................

INSTALLATION......................................................................................................................................................................................................................................................................................................................................................

Selecon Of The Boiler Locaon.................................................................................................................................................................................................................................................................

Mounng The Boiler .....................................................................................................................................................................................................................................................................................................................

CONNECTIONS ................................................................................................................................................................................................................................................................................................................................................

Condensate Connecon .....................................................................................................................................................................................................................................................................................................

Flue Connecon ..........................................................................................................................................................................................................................................................................................................................................

Gas Supply & Water Systems ..............................................................................................................................................................................................................................................................................

Electricity Supply........................................................................................................................................................................................................................................................................................................................................

COMMISSIONING ..................................................................................................................................................................................................................................................................................................................................

Final Checks And Operaons Before Boiler Start-up ....................................................................................................................................................................

Informaon Required for Safe and Economic Usage of Your Boiler ...............................................................................................

Control Panel Combuson Check & Gas Valve Adjustments ...............................................................................................................................

GAS TYPE CONVERSION.........................................................................................................................................................................................................................................................................................................

FAULT & FAILURE FINDING............................................................................................................................................................................................................................................................................................

MAINTENANCE ..............................................................................................................................................................................................................................................................................................................................................

STANDARDS AND REGULATIONS ..............................................................................................................................................................................................................................................................

APPENDIX ......................................................................................................................................................................................................................................................................................................................................................................

MOUNTING TEMPLATE .......................................................................................................................................................................... ...............................................................................................................................

EC DECLARATION OF CONFORMITY ................................................................................................................................................................................................................................................

1

2

3

5

8

10

12

13

14

22

23

25

26

27

33

35

39

40

42

1

INTRODUCTION

E.C.A. Scot 24 kW condensing boilers have been designed for an ecient, safe and comfortable

central heang and domesc hot water requirement. Scot 24 kW condensing boilers have the ability

to operate with natural gas or LPG.

The assembly and usage informaon of 24 kW Scot condensing boilers are available in this manual.

Detailed informaon have been provided in the guide regarding the technical specicaons of the

devices, selecon of the boiler locaon, ng its water, gas, ue and electric supply connecons, gas

conversion, maintenance informaon and resoluon of possible failures. Please carefully read the

manual in order to benet from all the features of your device.

Keep all the documents provided by your device in order to refer when required.

GUARANTEE AND SERVICE

• The appliance has guarantee period against faulty workmanship or material in condion that the

instrucons and precauons in this manual must be obeyed. The service operaons and general

maintenance must be carried out only qualied person.

• The warranty cercate must be registered by Service in the installaon day.

• Your appliance needs not any repairs if operated according to this manual. For assistance for addional

informaon, consult qualied person, installer or gas supplier.

DEFINITIONS OF SYMBOLS

The following symbols have been placed at required points in the text in order to draw aenon to

signicant points regarding the usage and assembly of the device. The meanings of the symbols have

been specied below.

• Indicates that the situaon that can only be interfered by qualied

person.

• Explanaons containing informaon that should be considered by

the user.

CAUTION: Means that material or slight individual damage may arise.

DANGER: Means that severe individual damage may arise.

• This appliance is not intended for use by person (including children)

with reduced physical, sensory and mental capabilies or lack of

experience and knowledge, unless they have been given supervision

or instrucon concerning use of appliance by a person responsible

for their safety. Children should be supervised to ensure that they do

not play with the appliance.

2

SAFETY INSTRUCTIONS AND PRECAUTIONS

Safety Instrucons

When a gas leak is found or suspected;

- Turn o the gas valve of the boiler and the valves of all other devices operang with gas.

- Shut o the stove, oven and similar appliances to put their ame out.

- Do not light matches, lighter etc, and stub out your cigaree.

- Venlate the environment by opening the doors and windows.

- Do not touch the buons and plugs of electrical devices.

- Turn o gas supply at the gas meter

- Do not use the phones at places where the gas leak is suspected.

- Call your qualied person as soon as possible.

• Do not place and use ammable and explosive liquid or materials around the boiler.

• Keep materials such as water, foam away from electrical connecons during operaons such as

cleaning, gas leak test etc.

• Do not lay the LPG container down

• Do not block air vents, openings made in the walls of the room which provide fresh air to the

installaon room.

Water Systems & Gas Supply Line

• Before installaon of the boiler, the water systems (CH & DHW circuit) and gas supply line must

be completed in accordance with the relevant regulaons and standards by user.

Gas Type Conversion

• The appliances should be purchased depending on operang gas type. In case of a demanding

gas type conversion, this is made with charge.

• Gas type conversion should be performed by the authorized service. Gas leak test should be

made aer the conversion operaon.

• The self-adhesive conversion label must br placed on the boiler aer gas type conversion.

Installaon

• The boiler must be installed in accordance with naonal and local requirements, gas safety

regulaons, relevant standarts and this manual by qualied installer.

• The appliance should be mounted against a closed wall.

• The appliance should not be posioned having direct contact to steam or gases.

• Any change of ue posion must not be made without consulng qualied person.

Boiler Start Up

• Boiler start up must be performed certainly by qualied person.

• Gas Type (Natural Gas / LPG), gas supply pressure (mbar), maximum DHW operang water

pressure (bar) and electricity supply voltage on the informaon plate must be suitable with

mains supply condions. This is checked by qualied person.

• Before connecng the ue, siphon must be lled with water to prevent the risk of the ue gases

• Ambient temperature of the room where the boiler installed should

be between 5 – 35 °C.

3

escaping into the installaon room.

• Aer boiler start up, you should request informaon about operang the boiler and safety

precauons from qualied person.

Usage and Maintenance

• Read carefully instrucons and precauons in this manual against wrong usage which causes

unsafe condions.

• The boiler should be checked and serviced for general maintenance once a year. Maintenance

and service operaons must be carried out only qualied person.

• Only a damp cloth should be used for cleaning the outer surface of the boiler and then the

surfaces should be dried completely. Do not use chemical substances or soluons which cause

rust and scratches in your appliances.

PRODUCT

General Specicaons

SCOT high eciency condensing boilers have been designed for providing ecient, safe and

comfortable central heang (CH) and domesc hot water (DHW). The boilers are suitable for only

room sealed operaon and are supplied for use with both natural gas and LPG.

Main board provides all the funconality and safety of the boiler. The board drives gas valve, fan,

pump and 3-way-valve. Flame in burner is checked regularly.

The control panel has been designed ergonomically. Scot condensing boiler having visualized plasc

control panel and advanced LCD display provides ease for user and service. Operaon modes, actual

and setpoint CH, actual and setpoint DHW, parameter menu, Error Codes can be seen on LCD display.

There are two DHW opon;

Comfort Mode (Adapve pre-heang control) / Normal Mode

◊ Comfort mode keeps the domesc water in a preheated condion depending on the user’s habit.

The DHW habit of the user is recorded. These recorded data is taken into account to control preheat

funcon the next day at the same me. (24 hours later)

◊ Normal mode is for the economical DHW control, ie. Without DHW preheat.

The safety systems in your appliance provide enre safety for you and your appliance. The safety

systems are;

• Flue Gas Over-heat Safety System (105 °C)

• Flame Failure Safety System

• Boiler Over-heat Safety System (2 levels: 95 °C and 105 °C)

• DHW (Domesc Hot Water) Over-heat Safety System

• High Water Pressure Protecon System (3 bar)

• Low Voltage Protecon System (160 VAC)

• High Voltage Protecon System (260 VAC)

• EMC (Electromagnec Compability) Filter

CAUTION: The device can cause vital dangerous situaon and material

damage incase of misuse or inapropriate usage.

4

1. Stainless Steel Exchanger

2. Air / gas manifold

3. Frequency Controlled Fan

4. Pump

5. Hydraulic circuit – ow manifold

6. Gas Valve

7. Water Pressure Sensor

8. Central Heang Outlet NTC

Temperature Sensor

9. Central Heang Return NTC

Temperature Sensor

10. Turbine

11. Air/Gas Mixer

12. Manual air vent

13. Ignion Electrodes

14. Ionizaon Electrode

15. Flue Gas NTC Sensor

16. Hydraulic circuit – return manifold

17. Ignion

18. Expansion vessel

19. Siphon

20. Plate Heat ExchangerThermal

cut-o 1600C

21. Thermal cut-o 1600C

12

1

15

13

17

618

11

10

19

20

4

16719

2

14

9

5

8

3

Figure 1

21

• Thermal Accumalaon Protecon System (with by-pass circuit and“ pum p over-run”)

• Frost Protecon System (The appliance must be on stand-by to acvate the frost protecon

Water Flow Inspecon

• Pump Dry Run Protecon System (0,3 bar)

• Pump An-scking Funcon

• 3 Way Valve An-scking Funcon

• Automac Air Vent

• Expansion Vessel (8-10 liters)

5

Notaons Of Product

Notasyon Açıklama

SC 24 HM E.C.A. Scot High Eciency Condensing Boiler

- 24 kW Central Heang Output (60/800C)

- 26 kW Domesc Hot Water Output (60/800C)

Technical Data

Scot high eeciency condensing boilers are suitable for only room sealed (C Type) operaon.

C type boilers C13(x), C33(x), C43(x), C53(x), C63(x), are air independent gas appliances. Required fresh air

for combuson is provided independently from the installaon room by the air supply ducts and

products of combuson is discharged by the ue gas ducts.

Table 1

6

SC 24 HM Unit

Gas Category II 2H 3B/P

Type C13(x), C33(x), C43(x),

C53(x). C63(x). C83(x)

Gas Type G20 G30/G31

Central Heang

CH Min. Heat Output (80/600C) 4,8 4,8 kW

CH Max. Heat Output (80/600C) 24,1 24,1 kW

CH Min. Heat Output (50/300C) 5,3 5,4 kW

CH Max. Heat Output (50/300C) 26,6 26,6 kW

CH Min. Heat Input 5 5 kW

CH Max. Heat Input 25 25 kW

Domesc Hot Water

DHW Min. Heat Output 4,8 4,8 kW

DHW Max. Heat Output 26 26 kW

DHW Min. Heat Input 5 5 kW

Max. Thermal Load 27 27 kW

Gas Consumpon*

Natural Gas (at Max. Lad) 2,616 m3/h

Natural Gas (at Min. Load) 0,506 m3/h

Propane (at Max. Lad) 1,92 kg/h

DHW Max. Heat Input 0,41 kg/h

Gas Supply Pressure

Natural Gas (G20) 20 mbar

Propane (G31) 37 mbar

Domesc Hot Water

Min. Operang Pressure 3 l/min

Max. Operang Pressure 12 (for ∆t=31°) l/min

Operang Pressure (for ∆t=35°) 10,6 l/min

Min. Water Pressure 0,4 bar

Max. Water Pressure 10 bar

Set Temperature Range 35-60 °C

General

Electric Supply 230 AC - 50 Hz VAC/Hz

Electrical Power Consumpon 125 wa

Expansion Vessel 8liter

Dimensions (H×W×L) 750x454x378 mm

Weight (Net) 40 kg

Central Heang Circuit

Min. Operang Pressure 0,8 bar

Max. Operang Pressure 3 bar

Set Temperature Range 30-80 °C

* For gas consumpon calculaon;

Natural Gas: Hu=9.59 kWh/m³ LPG (Butane/Propane): Hu=12.793 kWh/kg

Propane¦ Hu=12.91 kWh/kg

Table 2

7

Elektrik Devre Şeması

6

7

M

9

V1 V2

1

2

4

5

3

8

10 11

12

14

13

17 13

18 20

19

15

16

21

22

23 24

25 26

27 28 29 30

31

32

X1A

X1B

X2AX2BX2CX3AX3B

X4A

X4B

X4D X4C

X5

X6

X7 X8A X8B X8C X8D X8E X8F

mv

sr/ys

kh

mv

pm

by

gr

sr

tr

sy

kr

tr

kr

ys

mv

kh

pm

gr

sr

kr

sy

by

N

L

N

LN

L

NL

N

L2L1

IONPE

V2-

V2+V1-V1+

PNM

Speed

GND

PNM

PFB

GND

+-

++++

----

5V

GND

OUT

5V

GND

OUT

1. 230 VAC Power Supply

2. 230 VAC Room Thermostat

3. 230 VAC Terminal (Room Thermostat)

4. 230 VAC Pump

5. 230 VAC Fan

6. 230 VAC Igniter

7. Ignion Electrodes

8. Ionizaon Electrode

9. 230 VAC 3 Way Diverter Valve

10. 230 VAC Gas Valve (Safety)

11. 230 VAC Gas Valve (Modulaon)

12. Pump PWM

13. Terminal

14. 24 VDC Opentherm Room Thermostat

(Oponal)

15. CAN Bus

16. Boiler Chip Card (BCC) Port

17. PC Communicaon / e-Bus port

18. Outside Temperature Sensor (Oponal)

19. CH Flow NTC Sensor

20. Thermal Safety Fuse 1600C

21. KD Return Water NTC Sensor

22. Flue Gas NTC Sensor

23. Water Pressure Sensor

24. Turbine

25. CH Potenometer

26. DHW Potenometer

27. Reset Buon

28. ECO Buon

29. COMFORT Buon

30. Informaon Buon

31. LCD Screen

32. Fuse 4A

Figure 2

8

The pieces required for the assembly of the device (wall bracket, 5 gaskets for water and gas

connecons, screws) are placed on the top styrofoam. The other parts which seen in the g 2b are

oponal. Oponal parts are.

• Mounng bracket

• CH connecng pipes (3/4’’, 2 units)

• DHW connecng pipes (1/2’’, 2 units)

• Gas supply pipe (3/4’’, 1 unit)

• Nipples (1/2’’, 2 units- 3/4’’, 3 units)

• 4 units ½” and 6 units ¾” gaskets (for water and gas connecons)

Figure 3

BOILER PACKAGING

CAUTION: The instrucons on the boiler package should be considered

during transportaon and storage of the device.

- The device is delivered with a cardboard box with a dimension of 870 x 520 x 420 (HxWxL) mm as

supported by upper and lower styrofoams (Figure 2a).

Oponal

9

1. 90° Concentric Elbow

2. Flue Gas Plug

3. Air Inlet Plug

4. Sealing Ring Ø 60

5. Sealing Ring Ø 100

6. Extension Pipe

7. Screws

8. Flange

9. Bolt and Nut

10. Flat Sealing Ring

11. Concentric Terminal (Ø 60/ Ø 100)

12. Inner Flange (EPDM)

13. Outer Flange (Plasc)

- Hermec ue set is delivered within a cardboard box in addion to the device.

Standard hermec ue set (Ø 60/100) consists of the following pieces (Figure 3).

Şekil 4

1

2

3

4

5

6 9

7

8

10

11 12

13

10

INSTALLATION

Selecon of the Boiler Locaon

The boiler must be installed in accordance with gas safety regulaons and relevant standards.

Addionally, the clearance around the boiler should be as shown in g 4. In order to make service,

maintenance and usage easier.

Figure 4: Indicates the minimum distances that should remain on top and sides of the device.

(dimensions have been provided in mm).

Figure 5a Figure 5b

• Do not assemble your boiler at locaons subject to direct sunlight.

Sunlight may cause change of color on the external surface of the

device.

- The outer surface of the boiler do not exceed 85°C in maximum mode so do not take addional

precauons against construconal materials (combusble materials).

378 mm

min.500mm

750mm

239 mm

182mm

114mm

min. 500 mm

454 mm

min. 50 mm min. 50 mm

11

C Type (hermec) devices are not suitable for external environment installaon. It should be

within in the building.

The air/ue terminal must be exposed to the external air and allow free passage of air cross it

at all mes.

• The ue ducts are always wet.

• Under cold or excessive humid weather condions the water vapor

inside the waste gas may condensate while leaving the ue.

- In case of gas leakage, it is necessary to vent the installaon room according to naonal and local

requirements, although the room sealed operaon boilers are independent of room volume and

venlaon.

- The minimum acceptable dimensions from the terminal to obstrucons an venlaon openings

must obey naonal and local requirements.

- All horizontally ed ducts (air/ue) should be ed 2° or 3° upwards incline to allow condensate

water drain to the boiler.

DANGER: For room sealed operaon, the boiler locaon and air/ue termina

posion must obey naonal and local requirements, gas safety regulaons

and relevant standarts.

DANGER: Do not block the air vents which provide fresh air to the

installaon room.

Room Sealed Operaon (C Type)

12

Mounng The Boiler

Having determined the boiler locaon,

• The points of lock screws of wall bracket and assembly bracket are marked by using the assembly

template inside installaon and user’s operang instrucons of the device (pages 40-41). The

mounng bracket is an oponal part.

• Aer drilling the marked points, wall assembly bracket and assembly bracket are xed on the wall

by the dowel and lock screws which are inside the packaging of the device.

• Finally, the boiler is hanged on the wall by placing the assembly bracket on the back side of the

boiler on the mounng bracket assembled on the wall.

Figure 6a Figure 6b

750 mm

13

CONNECTIONS

Condensate Connecon

• All condensing boilers generate condensing discharge. The amount

of the condensate water depends on the working condions of your

appliance. This can be up to 1.7 litres condensate water an hour.

- The plasc pipe should be xed to the outlet pipe of the siphon and the pipe should be connected

to drain line. 1) If naonal and local requirements do not allow this such a connecon, the outlet pipe

of the siphon should be open to connecon and should not be closed/blocked.

- If the pipe work is not terminated within the building, the pipe must be insulated against freezing.

- The connecon pipes and ngs must be made of plasc material only.

- All horizontal parts must be connected at a slight 2° or 3° downwards incline to ensure to a good

ow.

14

Flue Connecon

3 dierent types fo air/ue system can be designed for Scot high eciency condensing boiler. In

a) The air/ue system is designed by horizontal concentric ducts

b) The air/ue system is designed by vercal concentric ducts

c) The air/ue system is designed by two separate ducts (twin connecon)

a) Connecon by Horizontal Concentric Ducts

• The concentric vercal adapter (Ø60/100 mm) allows 90° concentric elbow (Ø60/100 mm)

360°(Figure 7).

• The standard horizontal air/ue kit parts shown in Fig 3.

• The air/ue kit, given with your appliances is only suitable for

horizontal air ue design. For the other types, you should order

required accecories from qualied services.

• All horizontally ed ducts (air/ue) should be ed at a slight 2° or 3°

upwards incline to allow condensate water drain to the boiler.

• The parts of standard horizontal ue kit are available in Figure 4.The

horizontal ue connecons should be assembled as to have an

upwards inclinaon of 2° or 3° as to allow the return of condensate to

the device.

Figure 7

15

Figure 8

• Lubricate the internal part of the seals before the assembling. Oils and

greases are not suitable for the “EPDM”. A correct lubricaon using

silicon – substances is advised.

If the length of the ue is insucient, addional ue accessories should be ordered through

qualied service. Do not use ue set parts of dierent brands and types.

- Horizontal hermec ue kit accessories (Figure 8)

a) L= 500 mm concentric extension (Ø60/100 mm) 7006951561

L= 1000 mm concentric extension (Ø60/100 mm) 7006951562

b) 90° Concentric Elbow (Ø60/100 mm) 7006951560

c) 45° Concentric Elbow (Ø60/100 mm) 7006951559

a)

b) c)

16

Total length of horizontal air/ue system set shouldn’t exceed B=13m for SC 24 HM. Furthermore,

each extra 90° concentric elbow or two pieces of 45° concentric elbow decreases the maximum

length 1 m.

Figure 9

L1

L

2

L3

LMAX=L1+L2+L3=B-1

Lmax = B

LMAX = L1+L2 = B - 1

L1

L2

a)

b)

c)

17

b) Connecon by vercal Concentric Ducts

-The standard vercal air/ue kit is showed in Figure 10.

a) Concentric vercal adapter with ange (Ø60/100 mm) 7006951718

- Flat sealing ring

- Sealing ring EPDM (Ø60 mm)

- Seal ring EPDM (Ø100 mm)

b) Vercal concentric terminal (Ø60/100 mm) 7006951719

Figure 10

18

L

1

L

2

min.370mm

LMAX=L1+L2=C-0,5

If the air/ue kit length is insucient, addional ue accessories can be ordered.

- Vercal air/ue kit accessories (Ø60/100 mm)

a) Concentric extension L=500 mm (Ø60/100 mm)

7006951561 - concentric extension L= 1000 mm

(Ø60/100 mm) 7006951562

b) 90° Concentric Elbow (Ø60/100 mm) 700695156

c) 45° Concentric Elbow (Ø60/100 mm) 7006951559

d) Pitch Roof Outlet Kit (adjustable) 7006901417

Maximum length for vercal ue connecon can be SC 24 HM C=14 m.

Using of each one piece 90° elbow or two pieces 45° elbow decrease the maximum ue length 1 m.

(Figure 12).

a)

Figure 11

min.370mm

LMAX=C

b)

Figure 12

min.370mm

L

2

L1

LMAX=L1+L2=C-1

c)

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E.C.A. SCOT SC 24 HM Installation and User Manual

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