Avanta Plus Combination Boilers 24c | 28c | 35c | 39c

Flue Systems

Horizontal Flues

The Avanta Plus is designed for room sealed operation and no compartment ventilation is required. It must be installed with the correct Remeha approved flue accessories.
See our flue booklet for the full range of flue accessories and components

Flue Systems

Vertical Flues

Flue Systems

NOTE

  • The 90° Bend supplied with the horizontal flue kit is not included in any equivalent length calculations. For each 90° bend deduct 1.4m from the maximum flue length. For each 45° bend deduct 0.65m from the maximum flue length.

 

Description

60/100mm
Flue Diameter
L (Length
/Angle)

Part Number
– 60/100

80/125mm
Flue Diameter
L (Length
/Angle)

Part Number
– 80/125

A

Horizontal Concentric
Flue Kit

500mm

MG82328

500mm

KT812

A

Horizontal Non Cuttable Concentric
Flue Extension Kit

1000mm

MG82335

N/A

N/A

B

Vertical Concentric
Flue Kit

600mm

MG82330

600mm

KT813

C

Cuttable Concentric
Flue Extension

500mm

S103222

500mm

MGD86618

D

Non Cuttable Concentric
Flue Extension

250mm

MG83236

N/A

N/A

D

Non Cuttable Concentric
Flue Extension

500mm

MG83237

500mm

MGD86611

D

Non Cuttable Concentric
Flue Extension

1000mm

S103221

1000mm

MGD86612

F

Concentric Flue Bend

90°

MG83247

90°

MGD86603

G

Concentric Flue Bend

45°

MG83248

45°

MGD86592

H

Wall Bracket – white

N/A

MG87720

N/A

MGD87863

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Terminal Kits – Overview

  • Terminal

    Plume Management

    • PM Horizontal terminal kit installed with 1m extension
  • Terminal

    Plume Management with Vertical Outlet

    • PM Horizontal terminal kit with a vertical outlet
  • Terminal

    Balcony Terminal

    • PM Horizontal balcony kit suitable for a 2m balcony or overhang
  • Remeha iSense

    Plume Management with Deflector Outlet

    • PM Horizontal terminal kit installed with an adjustable deflector outlet

Boiler Type

Telescopic flue length ‘L’

Avanta Plus Combi
24c / 28c / 35c / 39c

250 – 450mm

Note: Telescopic Flue System – 450mm for Standard Flue. 1000mm Flue Option also available. 60/100 Extended Telescopic Flue.

Avanta Plus Combi

Flue diameter
(mm)

Max vertical/ horizontal
flue length ‘L’ (m)

24c

80/125

29

60/100

6

28c

80/125

29

60/100

6

35c

80/125

30

60/100

7

39c

80/125

25

60/100

5

Avanta Plus Combi PMK

Flue diameter
(mm)

Max vertical/ horizontal
flue length ‘L’ (m)

24c

80/125

4

60/100

4

28c

80/125

4

60/100

4

35c

80/125

4

60/100

4

39c

80/125

4

60/100

4

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Avanta Plus Combi – 60/100mm
Plume Management Kits

  • Terminal

    PMK – Horizontal Terminal Kit

    1. PMK wall terminal
    2. LP boiler bend (Avanta Plus)
    3. Wall plates (1 white and 1 black)
    4. 1000mm flue extension (60mm)
    5. Support bracket (60mm)
    6. 90° bend (60mm)
    7. Flue outlet (60mm)
    8. Bird guard

    NOTE: The horizontal terminal unit must be installed with the outlet pointing vertically upwards.

  • PMK – Horizontal Terminal Kit installed

    Terminal

  • Terminal

    PMK – Horizontal Terminal Kit with vertical outlet

    1. PMK wall terminal
    2. LP boiler bend (Avanta Plus)
    3. Wall plates (1 white and 1 black)
    4. 1000mm flue extension (60mm)
    5. Support bracket (60mm)
    6. Vertical outlet

    NOTE: The horizontal terminal unit must be installed with the outlet pointing vertically upwards. The vertical outlet replaces the 90° bend, flue outlet and bird guard which are discarded.

  • PMK – Horizontal Terminal Kit with a vertical output installed

    Terminal

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Avanta Plus Combi – 60/100mm
PMK Balcony Terminal Kit

  • Terminal

    PMK Balcony Flue 60/100mm

    1. PMK balcony terminal
    2. LP boiler bend (Avanta Plus)
    3. Wall plates (1 white and 1 black)
    4. Two 1000mm flue extension (60mm)
    5. Two Support bracket (60mm)
    6. Flue outlet (60mm)
    7. Bird guard

    NOTE: Horizontal terminal unit must be installed with the flue exit point at the top of the air inlet (flue exit is offset from centre line).

  • PMK Balcony flue 60/100 installed for a 2M overhang

    Terminal

Spare Parts
60/100mm Plume Management

  • Terminal

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Flue Terminal Positioning Guide

Position Guide

NOTE (fig 1): Dimensions D, E and F can be reduced to 40mm without affecting boiler performance but we would advise deflectors for these small distances and also to ensure that the condense plume does not affect adjacent surfaces. Also in addition to dimension E the terminal can be extended as shown in the diagram (fig 2)

NOTE (fig 2): It is important when fitting a plume management and balcony kit that the dimensions in table must be maintained in relation to both the air inlet as well as the flue outlet.

Dimension

Terminal Location

Min Distance
to Terminal (room sealed)

A

Directly below an opening, air brick, opening window, etc.

300mm

B

Above an opening, air brick, opening window, etc

300mm

C

Horizontally to an opening, air brick, opening window, etc.

300mm

D

Below a gutter or sanitary pipe work

75mm

E

Below the eaves

200mm

F

Below a balcony or carport roof

200mm

G

Above ground, roof or balcony level

300mm

H

From vertical drain / soil pipe work

40mm

J

From an internal or external corner

300mm

K

From a surface or boundary facing the terminal

600mm

L

Vertically from a terminal on
same wall

1500mm

M

Horizontally from a terminal on same wall

300mm

N

From a terminal facing the terminal

1200mm

P

From an opening in a carport (e.g. door, window) into the building

1200mm

R

From a vertical structure

500mm #

S

Above an intersection with the roof

300mm

#: This dimension to be increased to 1500mm if combustible material.

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Changing Parameters

Changing the parameters at service level (with access code)

To avoid non authorised adjustments, some parameter settings can only be changed once the special access code 12 has been entered. This code may only be used by qualified installers. The following settings can be changed at user and service level:

Settings at service level:

1) Do not exceed this value

* the system boiler in combination with an external calorifier will not warm up the calorifier in the Eco-mode

** minus character is not shown in display

*** only change for propane firing

Can be changed by users

Factory settings

Codes

Description

Setting range and notes where applicable

24c

28c

35c

39c

P 1

Tset flow

20 – 85°C

75°C

75°C

75°C

75°C

P 2

Tset DHW

40 – 65°C

55°C

55°C

55°C

55°C

P 3

Boiler regulation

0 = CHoff and DHWoff 
1 = CHon and DHWon 
2 = CHon and DHWoff 
3 = CHoff and DHWon

1

1

1

1

P 4

Eco-mode or DHW preheat setting

0 = DHW preheat on
1 = DHW preheat off *
2 = regulated by controller

2

2

2

2

P 5

Anticipated current

0 = no anticipated current for thermostat on/off
1 = anticipated current for thermostat on/off

0

0

0

0

P 6

Display off automatically

0 = display stays off
1 = display stays on
2 = display light switches off automatically after 3 minutes

2

2

2

2

 

To be changed by installer only

Factory settings

Codes

Description

Setting range and notes where applicable

24c

28c

35c

39c

P 17

Maximum fan speed CH (natural gas)

10 – 70 x 100 rpm

351)

371)

411)

501)

Maximum fan speed CH (propane)

10 – 70 x 100 rpm

331)

371)

411)

481)

P 18

Maximum fan speed DHW (natural gas)

Do not change ***

441)

551)

631)

671)

Maximum fan speed DHW (propane)

Adjustments for propane firing

431)

521)

601)

651)

P 19

Minimum fan speed
(CH and DHW) (natural gas)

Do not change ***

13

13

13

13

Minimum fan speed
(CH and DHW) (propane)

Adjustments for propane firing

20

20

20

20

P 20

Starting fan speed

Do not change

25

25

25

25

P 21

Pump setting CH

0 = low
1 = high

0

0

0

0

P 22

Pump running time after CH

1 – 99 minutes

2

2

2

2

P 23

Connection with Heat Recovery Unit (HRU)

0 = no connection with HRU
1 = connection with HRU

0

0

0

0

P 24

State remote alarm
(X7 terminal)

0 = off (connectors 1 and 2 closed)
1 =  alarm signal (connectors 1 and
2 closed)
2 = run indication (connectors 1 and
3 closed)
3 = ext. gas valve (connectors 1 and
3 closed)
4 = external pump relay (connectors
1 and 3 closed)

0

0

0

0

P 25

Legionella protection

0 = off
1 = on
2 = automatic (after putting boiler into operation, it will run for DHW operation 65°C once a week)

0

0

0

0

P 26

DHW cut-in temperature

2 – 15 °C

5

5

5

5

P 27

Heat curve set point flow temperature

0 – 60 °C

20

20

20

20

P 28

Heat curve set point outside temperature (min)

0 – 30 °C

20

20

20

20

P 29

Heat curve set point outside temperature (max)

-40 – 0 °C

-15**

-15**

-15**

-15**

P 30

Boiler type

0 = combi
1 = system

0

0

0

0

P 31

DHW control stop

0 – 20 °C

15

15

15

15

PdF (PdU is shown later)

Restore factory settings

On identification plate dF setting X is shown. Change parameter into X will restore the factory settings.

X

X

X

X

On identification plate dU setting Y is shown. Change parameter into Y will restore the factory settings.

Y

Y

Y

Y

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Error Codes

Combination Boilers

How to deal with errors

  • Make a note of the displayed error code
  • Press the ‘reset’ key for 3 seconds. If the error code continues to appear, look for the cause in the error table below and resolve it

NOTE  The error code is important for the correct and swift detection of the nature of the error and for possible support from our technical help line.

Remeha Technical Line 0844 879 7690

Error Code

Description

Possible Cause

Check / Solution

E0

Flow or return sensor fault

Short circuit in the flow, return or boiler temperature sensor

Check the wiring and the connections of the sensors visually: are the plugs all correctly in position? With a multimeter: measure the resistance in the wiring and connection.

Defective or not (properly) connected flow, return or boiler temperature sensor

Check that the sensors are working; take the sensors out * and measure the resistance with a multimeter at room temperature (20 – 25°C); the sensor is working properly if the resistance is between 12 and 15 kΩ.

E1

Flow temperature is higher than the set maximum temperature

Insufficient water

Check the minimum water pressure, read off the gauge.

No through flow

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; if that is in order the pump is faulty.

Too much air in the system

Vent the system.

Deviation in the flow or return temperature sensor

Check that the sensors are working; take the sensors out * and measure the resistance with a multimeter at room temperature (20 – 25°C); the sensor is working properly if the resistance is between 12 and 15 kΩ.

E2

Return temperature is higher than the flow temperature

Insufficient water

Check the minimum water pressure, read off the gauge.

No through flow

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.

Too much air in the system

Vent the system.

Sensors not wired correctly

Check the wiring between sensors and control unit.

Deviation in the flow or return temperature sensor

Check that the sensors are working; take the sensors out * and measure the resistance with a multimeter at room temperature (20 – 25°C); the sensor is working properly if the resistance is between 12 and 15 kΩ.

E3

Control unit or earth fault

Mains supply not correctly earthed. Control unit faulty

Check that the power supply from the switch spur is properly earthed, if that is the case the control unit is faulty.

E4

More than 5 start
attempts without any flame formation

No ignition spark

Check:
• the connection between the ignition wire and the ignition trafo;
• the ignition wire and electrode for ‘dielectric breakdown’;
• the inter-electrode distance, this should be 3-4mm; that the ignition electrode is properly earthed.

A spark but no flame

Check that:
• the gas tap is open;
• the gas pre-pressure is sufficient;
• the gas pipe is de-aerated;
• the gas valve is energised during ignition and opens;
• the electrode is correctly fitted and clean;
• the CO2 adjustment at low and full load;
• there is no obstruction / fitting fault in the gas pipe;
• there is no obstruction in the air supply or flue (e.g. a blocked siphon); there is no recirculation of flue gasses (either inside or outside the boiler).

There is a flame but no, or insufficient ionisation (lower than 3 or higher than 9 µA)

Check:
• the flame, is the heart of the flame visible and the flame stable?
• the CO2 adjustment at low and full load;
• that the ignition electrode is correctly earthed;
• visual check of the ignition/ionisation electrode: look for white oxide film
(remove with sandpaper or a screwdriver); look at the shape (are the pins still the original shape and is the distance between the two ends of the pins between 3 and 4mm).

E5

No ionisation or ionisation failure more than 5 times during one heat demand

CO2 wrongly adjusted

Check:
• CO2 adjustment on the gas block;
• ignition/ionisation pin;
• flue/air-supply connections;
• gas flow at full load;
• if there is no recirculation of flue gasses (either inside or outside the boiler).

E6

Unwanted flame formation

 

Faulty control unit, replace control unit.

E7

No water in the boiler or the pump is not working

Insufficient water

Check the minimum water pressure, read off the gauge and check for leaks.

No through flow

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.

Too much air in the system

Vent the system.

Wrong pump wiring

Check wiring from and to control unit.

E8

Fan fault

Fan is not working

Check:
• fan function;
• fan wiring and connection.

Fan does not stop

Check:
• fan function;
• fan wiring and connection;
• excess chimney draught.

E10

No through flow during venting cycle

Insufficient water

Check the minimum water pressure, read off the gauge and check for leaks.

No through flow

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.

Too much air in the system

Vent the system.

Wrong pump wiring

Check wiring from and to control unit.

E11

Air box temperature
to high

Air leakage from heat exchanger
to air box

Check:
• the sealing of the viewing glass;
• whether front plate of heat exchanger is properly tightened
• front plate sealing;
• whether ignition electrode is properly fitted.

E13

Heat-exchanger fuse protection has responded; replace the heat exchanger after finding and solving the cause

Heat exchanger faulty

Check wiring between heat exchanger fuse.

Insufficient water

Check the minimum water pressure, read off the gauge and check for leaks.

No through flow

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.

E43

Parameter limits

Automation settings

Replace dF / dU settings

E44

Parameter check

Automation settings

Replace dF / dU settings.

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