Mark Climate POWERFLEX Manuale utente

Technical manual EN

MARK POWERFLEX

0660405_R03

INSTRUCTIONS FOR USER

If you have questions concerning the use of your boiler or heating system, please ask your

installer. It is in your own interest and that of the installer that you are aware of how to

operate your boiler and heating system safely and efciently.

Operation

Water, coming from the radiators or from the DHW unit is heated in the aluminium heat exchanger.

The CH or DHW pump guarantees circulation of water. The air needed for combustion is sucked in

by a rpm controlled fan. At low boilertemperatures the uegasses can be cooled down sufciently for

condensation of the water.This water is drained to the sewer via a built in syphon. This drainage may

never be blocked. A burnercontroller with built in micro-processor takes care of the electrical regulation

of the boiler.

Topping up

The built in manometer indicates if the waterpressure is sufcient. As soon as the waterpressure drops

below 1 bar topping up is necessary. If topping up becomes a regular occurrence, your installation should

be checked by an installer.

Disconnect from the main. Connect the lling hose to the cold water tap and to the ll and drain valve

of the boiler. Before tightning the coupling in the installation slowly ll the hose with water allowing

present air to escape. Now open the ll and drain valve and slowly ll the installation till a pressure

between 1.5 and 2.0 bar is reached. When nished connect again to the main.

Bleeding

To remove any air present in the heating system and boiler, bleeding is necessary. Disconnect from the

main. Open all the radiator valves. Bleed the air from all the radiators starting with the ones at the

lowest point in the system.After bleeding, check the water pressure and top up if required (if water

pressure has dropped below 1 bar). Connect to the main again.

Starting the boiler

Please ask your installer how to start the boiler. Depending on how your heating system is controlled,

this could be via an external timeclock, thermostat, switch or otherwise. Once the boilerVolt-free enable

contacts are closed, the boiler will commence its starting sequence.

Boiler ow temperature

The burner controller adjusts the owtemperature between 20 ° and 85 °C. The temperature setting

can be changed using the control panel.The installation manual provides the instructions for setting the

ow temperature.

DHW (Hot Water) temperature (if applicable)

From the factory the DHW temperature is set to a value of 60 °C. This set value can be changed into

a value between 35 and 65 °C with help of the buttons on the control panel. If the DHW device has a

thermostat the DHW temperature can be adjusted by setting this thermostat.

Warning

Incorrect installation, adjustment, alteration, repair or maintenance work may lead to material

damage or injury. All work must be carried out by certied, qualied professionals. If the appliance

is not positioned in accordance with the instructions, the warranty shall be rendered void. This

appliance is not intended for use by children or persons with a physical, sensory or mental

handicap, or who lack the required experience or expertise.Children must be supervised to

ensure that they do not play with the appliance.

Switching off the boiler

During summer time the room thermostat can be set to a lower value to turn off the boiler. During

winter or during a longer periode of absence this temperature never should be set to a lower value than

15 °C. Don’t switch of the power. During a period of frost all the radiators should be partly or totally

opened to avoid danger of freezing.

The integrated pump control wil activate the pump every 24 hours during a short period even if no

demand is present.This prevents the pump jamming. Only when work on the boiler is carried out may

the main electricity supply and the gas supply be turned off (your installer can show where these are

located).

Errors

If an error occurs rst check the following

• Is the room thermostat properly set?

• Is the boiler connected to the main? Power supply present?

• Is the gas valve opened?

• Are the radiator valves open?

• Is the waterpressure in the installation higher than 1 bar?

• Is the Installation bled thoroughly?

An error is indicated by a ashing code on the display. It is very important for the sake of a correct

diagnosis to mention this ashing code when calling your installer. Reset the burner controller by

pressing the OK button on the control panel. If the error more often occurs contact your installer.

Maintenance

A yearly inspection of the boiler to be done by your installer is necessary. The life-time and the reliability

of the installation are improved by doing so.The casing of the boiler can be cleaned with a soft cloth (no

abrasives). Never use solvents like thinner!

Caution

The air supply (for air needed for combustion) and the ue parts are essential parts for safe and efcient

functioning of the boiler. Changes on these systems by non qualied persons are not allowed just like the

settings of the gasvalve.The gas/air ratio is set to a lambda value of approximately 1.26.This corresponds

with a CO2 level of 9,3 % (full load).

For further information see installation manual.

The information in this document is subject to change without notice.The most recent version of this

manual is always available at www.markclimate.com/downloads.

1 DESCRIPTION BOILER

1 Manometer

2 Display LCD

3 Power switch

4 Fuse

5 Burnerhood

6 Sight glass

7 Flow NTC

8 Ignition electrode

9 Ionisation ame detector

10 Inspection cover

11 Air supply

12 Gas pipe

13 Air intake silencer

14 Overheat limiter

15 Gas valve

16 Fan

17 Flow

18 Flue gas NTC

19 Return

20 Exhaust

21 Syphon

22 Sump inspection cover

23 Return NTC

24 Fill and drain valve

25 Water pressure switch

26 Automatic air vent

27 Venturi

28 Boiler controller (Maxsys)

29 Terminal strip

30 Air pressure switch

31 Syphon pressure switch

2 TECHNICAL DATA

340-5 425-6 510-7 595-8

Central heating

Nominal input max load (Hi) kW 340 425 510 595

Nominal input min load (Hi) kW 68 85 102 119

Nominal output max load 80-60 ºC kW 331 413,1 495,7 578,3

Nominal output min load 80-60 ºC kW 66 82,5 99 115,6

Efciency max load 80-60 ºC (Hi) % 97,2 97,2 97,2 97,2

Efciency min load 80-60 ºC (Hi) % 97 97 97 97

Efciency max load 50-30 ºC (Hi) % 103,1 103,1 103,1 103,1

Efciency 30% load 30 ºC (return) (Hi) %108,1 108,1 108,1 108,1

Flue gas

Temperature ue-gas max load 80-60 ºC ºC 65-70 65-70 65-70 65-70

Temperature ue-gas min load 80-60 ºC ºC 60-65 60-65 60-65 60-65

Flow ue-gasses at max load G25 m3/h 556 695 835 974

Flow ue-gasses at min load G25 m3/h 111 139 167 195

Maximum ue-resistance Pa 250 250 300 300

Emission CO (n=1) ppm 116 110 100 90

Emission NOx (n=1)/Nox class ppm 27/class 6 27/class 6 27/class 6 27/class 6

Types B23, B33, C13, C33, C43, C53, C63, C83 yes yes yes yes

Gas

Gasow max load G25 m3/h 41,8 52,3 62,8 73,2

Gasow min load G25 m3/h 8,4 10,5 12,6 14,6

Gas ow max load G25.3 m3/h 39,94 49,93 59,92 69,91

Gas ow min load G25.3 m3/h 7,99 9,98 11,98 13,98

Gasow max load G20 m3/h 36 45 54 63

Gasow min load G20 m3/h 7,2 9 10,8 12,6

CO2content max load G25/G20 /G25.3 % 9,3 9,3 9,3 9,3

CO2content min load G25/G20 /G25.3 % 9,1 9,1 9,1 9,1

O2content max load G25 % 3,90 +0,10-0,30 3,90 +0,10-0,30 3,90 +0,10-0,30 3,90 +0,10-0,30

O2content min load G25 % 4,30 +0,35-0,20 4,30 +0,35-0,20 4,30 +0,35-0,20 4,30 +0,35-0,20

O2content max load G25.3 % 3,95 +0,10-0,35 3,95 +0,10-0,35 3,95 +0,10-0,35 3,95 +0,10-0,35

O2content min load G25.3 % 4,35 +0,35-0,25 4,35 +0,35-0,25 4,35 +0,35-0,25 4,35 +0,35-0,25

O2content max load G20 % 4,25 +0,10-0,35 4,25 +0,10-0,35 4,25 +0,10-0,35 4,25 +0,10-0,35

O2content min load G20 % 4,60 +0,40-0,20 4,60 +0,40-0,20 4,60 +0,40-0,20 4,60 +0,40-0,20

Water

Maximum ow temperature ºC 85 85 85 85

Content heat-exchanger (without manifolds) ltr 36,2 43,7 51,1 58,5

Minimum/maximum operating pressure bar 0,8/6 0,8/6 0,8/6 0,8/6

Hydraulic resistance mbar 200 210 220 230

(DT20 nominal ow at full load 80-60 ºC)

Maximum DT max load/min load ºC 25/35 25/35 25/35 25/35

Maximum waterow m3/h 28,5 35,6 42,7 49,8

Weight

Mass of heat exchanger with manifolds and

sump

kg 150 180 215 245

Total weight boiler kg 330 365 429 464

Sizes of casing

Width mm 700 700 700 700

Depth without exhaust connection mm 1222 1222 1553 1553

Height with wheels (without) mm 1540 (1431) 1540 (1431) 1540 (1431) 1540 (1431)

Electrical

Protection IP 00B 00B 00B 00B

Supply life+neutral V/Hz 230/50 230/50 230/50 230/50

Standby power consumption* W 21 21 36 36

Min load powerconsumption* W 78 78 105 105

Max load power consumption* W 587 587 874 874

Maximum allowable power consumption W 2300 2300 2300 2300

Fuse A 10 10 10 10

* as coming from factory without extra devices connected

2.1 Component Matrix

Overview of main components used in PowerFlex-series

Part 340-5 425-6 510-7 595-8

Boiler control Honeywell Maxsys S4966V2052 S4966V2052 S4966V2052 S4966V2052

Display (user interface) DSP 49G2193 DSP 49G2193 DSP 49G2193 DSP 49G2193

Fan MVL 230VAC G3G200-GN20-30 G3G200-GN20-30 G3G250-GN17-01 G3G250-GN17-01

Gas-valve Dungs 230 VAC MBC-700-SE-S02 MBC-700-SE-S02 MBC-700-SE-S02 MBC-700-SE-S02

Venturi Honeywell VMU500A VMU500A VMU680 VMU680

Texi Burner round 130 mm Worgas 433 529 623 718

Silencer air-inlet yes

Silencer ue-gas round 250 mm L=300mm yes double yes single yes single yes single

NTC 12 k L=50 3 3 3 3

NTC 12 k OTC optional optional optional optional

Water low pressure device 1,6/0,8 bar yes yes yes yes

Pressure difference switch 40 Pa in and 25 Pa

out

yes yes yes yes

Syphon pressure difference switch 12,4 mbar out yes yes yes yes

Gas pressure switch : in 11,7-14,3 and out 8,6-

11,4 mbar

yes yes yes yes

3 DIMENSIONS

Indice

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