STA-RITE SR200NA - Gas and Air Flow Through the Heater

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SECTION ONE – Heater Design and Function

1. The Blower draws ambient air into the Burner

System by negative pressure th rough the AA

2. The Blower at the same time is drawing Natural or

Propane Gas into the Burner System by negative

pressure t h rough the GG

3. The air and gas are thoroughly mixed in the MM

4. The BB

then forces the air/gas mixture into the

in the CC

under a

slight positive pressure.

5. The mixture is ignited in the CC

, around the circumference of the

. Combustion continues until the pre-

set water temperature is reached.

6. The HH

tubes surrounding the

Burner/Flameholder extract heat from the hot flue

gases and heat the water flowing through the

tubes.

7. The cooled exhaust is collected in a sealed EE

, then is discharged out the VV

1-5

Gas

Air

Exhaust

Gas and Air Flow Through the Heater

Figure 1-5: Air and Gas Flow

Risk of fire or explosion.

If Combination Gas Control Valve does not open or if

fuel does not ignite properly, DO NOT attempt to over-

ride safety interlocks to force combustion. Find and

fix fault before operating heater.

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