Proheat M80 Manuel de service télécharger pdf (Page 30)

An increase in the compressor air pressure over the nozzle will add more

atomized fuel into the combustion tube; however the combustion air provided

y the combustion air blower remains constant resulting in a rich air/fuel

mixture and possibly black smoke from the exhaust.

A restriction in the amount of air through the combustion chamber (restricted

air intake, dirty heat exchanger plugged exhaust) will also result in a rich air/fuel

mixture as the compressor air pressure (and atomized fuel flow) remains constant.

A restriction in the fuel line, filter, screens, or nozzle fuel passage will reduce

the atomized fuel/air flow into the combustion tube: however the combustion

air provided by the combustion air blower remains constant resulting in a lean

air/fuel mixture and possibly gray/white smoke from the exhaust.

A decrease in the compressor air pressure over the nozzle will reduce the

amount of atomized fuel/air into the combustion tube; however the combustion

air provided by the combustion air blower remains constant resulting in a lean

air/fuel mixture and possibly gray/white smoke from the exhaust.

Examples:

Figure 2-2. M80 Fuel Delivery Theory of Operation.

BLOWN AIR

BLOWER

MOTOR

COMBUSTION

AIR BLOWER

AIR

COMPRESSOR

FUEL

SOLENOID

(N.C.)

FUEL

PUMP

ATMOSPHERIC

PRESSURE

NOZZLE

FUEL 0 PRESSURE

VENTURI EFFECT

AIR

ATOMIZED

FUEL

FRESH

AIR IN

FRESH

AIR IN

FUEL

DRAWN

FUEL TANK

AIR

FILTER

FUEL

FILTER

AIR PRESSURE

2.9 psi

FUEL

REG.

5 – 10 psi

REGULATOR

SCREEN

FUEL DELIVERY

BLOCK SCREEN

2-5

PROHEAT M-SERIES G-II PCM SERVICE MANUAL

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 89 90

Commentaires sur ces manuels

Pas de commentaire

Proheat M80 Manuel de service Page 30

Commentaires sur ces manuels

Produits connexes et manuels pour Chauffages d'appoint Proheat M80