Ecoflam Multicalor 300.1 Manual Download

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pag.6

techniques for energy saving

LB1203

MULTICALOR 300.1÷400.1

ADJUSTMENT OF GAS MINIMUM PRESSURE SWITCH

Unscrew off and remove cover M. - Set regulator N to a value equal to 60% of gas nominal feed
pressure (i.e. for nat. gas nom. pressure = 20 mbar, set regulator to a value of 12 mbar; for
L.P.G. nom. pressure of G30/G31- 30/37 mbar, set regulator to a value of 18 mbar).Screw
up cover M

ADJUSTMENT OF THE AIR PRESSURE SWITCH

Unscrew screws A and B and remove cover C.- Set the pressure switch to the minimum by
turning regulator D to position 1.
- Start the burner and keep in low flame running, while checking that combustion is cor-
rect. Through a small cardboard, progressively obstruct the air intake until to obtain a
CO2 increase of 0,5÷0,8% or else, if a pressure gauge is available, connected to pressure
port E, until reaching a pressure drop of 1 mbar (10 mm of W.G.). - Slowly increase the
adjustment value of the air pressure switch until to have the burner lockout. Remove the
obstruction from the air intake, screw on the cover C and start the burner by pressing the
control box rearm button.

Note: The pressure measured at pressure port E must be within the limits of the pressure
switch working range. If not, loose the locking nut of screw F and gradually turn the same: clockwise
to reduce the pressure; counterclockwise to increase. At the end tighten the locking nut.

2,5

0,4

0,6

0,9

3,0

1,5

2,1

1,8

2,4

2,7

1,2

gas pressure

switch

air pressure switch

LEAKAGE CONTROL DEVICE DUNGS VPS 504-VDK 200

When the thermostats are closed, the gas leakage control device checks the valve seals by pressurizing the circuit between the
two gas valves. When test pressure is reached the device remains in stand-by for about 25 seconds. At the end of the test the yel-
low pilot light on the control device lights up and the burner is enabled to carry out the start-up cycle. If the seal on one of the
valves is faulty and this causes a drop in test pressure, the device puts the system into the safety condition and the red pilot right
on the device lights up. The flame control device starts the burner fan to carry out prewashing of the
combustion chamber,checking fan air pressure via the air pressure switch. After preventilation the igni-
tion transformer starts operating, generating a spark between the electrodes and simultaneously the gas
valves open (safety gas valve VS and first stage operating valve VL). If the flame does not ignite or goes
out, total safety is ensured by an ionization detection probe. The safety time limit in the event of no
flame is less than 2 seconds at start-up and less than 1 during operation. In the event of no gas being
supplied or of a considerable drop in pressure the minimum gas pressure switch interrupts burner operation. About 20/30
seconds after ignition the flame control device commands operation of the second stage via the gas valve and air servocontrol,
thus taking the burner to maximum power.

DISPOSITIVO
CONTROLLO

TENUTA

LANDIS & STAEFA SQM 50.381A2 AIR DAMPER MOTOR

Remove cover to gain access to the adjusting cams.The cams are to be adjusted through the suitable key provided

for. Description:

- High flame operating opening position adjusting cam (Light-Oil /Gas)

- Ignition flame opening position adjusting cam (Gas).

III

- Low flame operating opening position adjusting cam (Gas)

- Low flame operating opening position adjusting cam ( Light-Oil)

- 2nd flame solenoid valve opening On/Off cam (Light-Oil)

- Not used cam