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Start-up

Gas pressure switch
Air pressure switch

Gas pressure switch GW...A5/A6

The pressure switch can be used to 

monitor either falling pressure (min.) or 

increasing pressure (max.).

Types GW...A5/A6 are EC-type-tested 

and certified in accordance with the EC 

Gas Appliances Directive and EC Pres-

sure Equipment Directive. Class “S” as 

defined by EN 1854 and TÜV-tested as 

a pressure switch of special type for 

use in heating installations of steam 

and hot-water boilers in accordance 

with TRD 604 and VdTÜV information 

sheet pressure 100/1.

The nominal value (switch point) is 

adjusted using an adjustment wheel 

with scale.

Use:

GW ... A5 for dual solenoid valves

GW ... A6 for individual solenoid or 

motor valves

Verbundregler für EK 

Gas pressure switch A5

Verbundregler für EU

Gas pressure switch A6

Technical data:

Type of gas:

Gases according to DVGW Worksheet 

G 260/1, gas families 1, 2, 3

Degree of protection: IP 54

Ambient temperature:  -15°C to +60°C

Mounting position:  any

Operating pressure up to:

GW 50/150 A5A6 

 500 mbar

GW 500/ A5/A6

 600 mbar

Adjusting range:

GW 50 A5/ A6 5-50 mbar

GW 150 A5/ A6 10-150 mbar

GW 500 A5/ A6 100-500 mbar

Air pressure switch

The air pressure switch is provided for 

monitoring the pressure of the combu-

stion air fan. 

The pressure switch DL 50A has been 

designed for switching on, off or over an 

electric circuit in the case of changes of 

the actual pressure levels from the set-

point setting. The pressure switch DL 

50A can be used as overpressure, 

vacuum or differential pressure monitor 

for air and non-aggressive gases but 

not for gases according to DVGW 

Worksheet G 260/l.

Determining the differential pre-
flushing pressure and adjusting the 
differential pressure switch

• Burner in the pre-aeration phase.

• Measure pressure on test 

connection (2).

• Measure vacuum on test 

connection (3).

• Add the measured pressures.

• Set the scale to 90% of the calculated 

value.

Certification

The pressure switch is registered by 

CE/DIN-DVGW. 

Switch function test

Test buttons are provided to check the 

switch functions for proper operation 

(with safety cut-out and interlock). The 

burner is normally run in partial-load 

condition when testing the safety 

functions. On pressing button (4) the 

vacuum will be removed which causes 

the differential pressure to drop below 

the required level. If it is necessary to 

test the pressure switch functions under 

full-load conditions this may be done by 

pressing button (1). 

12/2011                14 072 205

Содержание Low-NOx N10.12000.30 G-EU2

Страница 1: ...Operation manual for the authorized specialist Gas forced draught burner Low NOx N10 G EU2 12 2011 14 072 205...

Страница 2: ...er head settings 13 Gas connection 14 Gas train description 15 Start up Checking procedure 17 Disassembling firing head 18 Gas start up mode Gas operating mode General safety function 19 Fuel air comp...

Страница 3: ...m to ensure a reliable supply with combustion air Maintenance The furnace system should be serviced at least once a year by an authorized specialist It is recommended to con clude a maintenance agreem...

Страница 4: ...worn while work is being carried out on the system Specified adjustment maintenance and inspection work must be carried out at the specified intervals Before any work is carried out on the system the...

Страница 5: ...combustion manager and other components Optional electro technical equipment BCS or Etamatic OEM as burner controller Power controller with protection soft start or Y D start externally in a separate...

Страница 6: ...oller electronic compound controller gas valve leak detector is placed in the separated switch cabinet Combustion air An overpressure fan impeller with a steep characteristic is provided to ensure a h...

Страница 7: ...full load range Boiler furnace pressure mbar Operation fields N10 12000 G EU2 according EN 676 Operation fields N10 14000 G EU2 according EN 676 Combustion power output MW Boiler furnace pressure mbar...

Страница 8: ...11 12 13 14 15 16 17 Arbeitsfeld N10 16000 45 G E FQ Operation fields N10 16000 G EU2 FQe according EN 676 Technical data Operation fields Combustion power output MW Boiler furnace pressure mbar FQe f...

Страница 9: ...ation volume flow natural gas m3 h t 15 C 1013 mbar dv 0 61 p p diagr T 288 1013 p dv 0 61 Pressure loss mbar Pressure loss gas mixed unit N10 G EU2 1 10 100 100 1000 10000 D r u c k v e r l u s t m b...

Страница 10: ...sional drawing N 10 G EU2 The cover of motor is removable in case of ope ning boiler door for revi sion Motor with disassem bled protection grid Drilling Template Air intake box cover with dismantled...

Страница 11: ...at a diameter not below 70 of the combu stion chamber diameter The space between the flame pipe of the burner and the boiler lining should be lined with heat resistant material such as Cerafelt This...

Страница 12: ...of the burner reference should be made to the circuit diagram of the furnace system The electric connection of the burner and gas valves and instruments is allo wed to be entrusted to authorized spe...

Страница 13: ...0 G EU2 620 155 118 491 497 375 65 30 10 N10 14000 G EU2 620 155 118 491 497 338 65 30 10 N10 16000 G EU2 620 155 118 491 497 338 65 30 10 Adjustment electrical Ignition Operation Gas ignition burner...

Страница 14: ...e flue resistance of the boiler and the gas pressure loss of the burner and valves and instruments group Caution The absence of impurities and foreign bodies must be checked before installa tion and c...

Страница 15: ...ains If the outlet side of the regulator i e individual fittings and instruments downstream of the gas pressure regula tor has not been designed to be com patible with the maximum supply pressure that...

Страница 16: ...ailable gas flow pressure 100 Burner 101 Impulse pipe gas pressure 120 Air flap 141 Ball valve 142 Gas filter 144 Gas pressure regulator 145 Safety shut off valve SSV 148 Safety relief valve SRV 150 G...

Страница 17: ...can be altered on the system without the use of tools As a result the position indicator is not always a definitive indication of flap position The position of the gas flap is always determined by the...

Страница 18: ...hen closing the casing cover do the following steps Screw in the screws 8 to 13 by doing only a few turns Tighten the screws beginning with the screws 8 and 9 followed by the screws 10 and 11 and fina...

Страница 19: ...electronic compound controller which in turn will control the actuators of the gas control damper and air control dampers and increase or decrease the flow rates according to a specific program The s...

Страница 20: ...controller as an option During long burner operating periods in the partial load range in particular the reduction in blower speed helps to con serve electrical energy and reduce noise emissions from...

Страница 21: ...ters have been appropriately configured to meet the requirements of the system The actua tors must similarly be chekked for cor rect adjustment During the I O test the manual gas shut off valves must...

Страница 22: ...P2 closed N L PE P 1 The STM 40 servomotor is used in con junction with various electronic com pound control systems Priority with products supplied by Lamtec Etama tic Etamatic OEM VMS FMS With some...

Страница 23: ...he electrical diagram and the supplementary information for the indi vidual flame sensors contained in the manufacturer s documentation N B The flame sensors must be regularly inspected for dirt and c...

Страница 24: ...00 500 mbar Air pressure switch The air pressure switch is provided for monitoring the pressure of the combu stion air fan The pressure switch DL 50A has been designed for switching on off or over an...

Страница 25: ...r Ambient temperature 15 to 60 C Storage temperature 20 to 80 C Threaded connection Rp to ISO 7 1 Pressure test points at the inlet down strearn of the strainer and at the out let Housing parts AlSi D...

Страница 26: ...bar CG 50 being pre set at the factory to pG 10 mbar Pre setting Measure gas pressure pG at testpoint B Set gas pressure at pG in accord ance with the burner manufacturer sspecifi cations and flue gas...

Страница 27: ...0 3 10 10 10 0 20 11 75 3 20 10 04 0 30 11 69 3 30 9 99 0 40 11 63 3 40 9 93 0 50 11 58 3 50 9 87 0 60 11 52 3 60 9 82 0 70 11 46 3 70 9 76 0 80 11 41 3 80 9 70 0 90 11 35 3 90 9 65 1 00 11 29 4 00 9...

Страница 28: ...r temperature in C CO2 carbon dioxide content in Examples Measured values in natural gas opera tion CO2 content of the flue gases10 8 Flue gas temperature 195 C Air intake temperature 22 C Flue gas lo...

Страница 29: ...eck the fan impeller for possi ble deformation and cracks 8 Clean the UV flame sensor 9 Clean the filters and screens 10 Check the electrical connections 11 Check the burner head setting Check the fla...

Страница 30: ...ays a clean and fat free surface of all parts to be fitted into one another For reassembly Place the disk and the bush into their initial position wit hout rotating into one another make sure that the...

Страница 31: ...essure 4 Are the shut off valves opened 5 Are all control and safety instruments such as boiler thermostat water supply failure cut out limit switches etc properly set 1 Ignition failure Cause Remedy...

Страница 32: ...sen sor Clean flame sensor Burner fails to start Check connection of automatic fur nace controller Trouble lamp lights flame trouble Unlock and search for cause UV Radiation too weak Check combus tio...

Страница 33: ...34 Manufacturer s declaration...

Страница 34: ...GmbH D 64546 M rfelden Walldorf ELCO Austria GmbH A 2544 Leobersdorf ELCOTHERM AG CH 7324 Vilters ELCO Rendamax B V NL 1410 AB Naarden ELCO Belgium n v s a B 1731 Zellik ELCO Italia S p A I 31023 Resa...

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