Honeywell S9360A Installation Instructions Manual page 16

S9360, S9361, S9370, S9371 INTEGRATED BOILER CONTROLLERS
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
APPEARANCE
SMALL BLUE FLAME
LAZY YELLOW FLAME
WAVING BLUE FLAME
NOISY LIFTING
BLOWING FLAME
HARD SHARP FLAME
Fig. 11. Examples of unsatisfactory pilot flames.
® U.S. Registered Trademark
© 2011 Honeywell International Inc.
69-2076—03
Printed in United States
CAUSE
CHECK FOR LACK OF GAS FROM:
• CLOGGED ORIFICE FILTER
• CLOGGED PILOT FILTER
• LOW GAS SUPPLY PRESSURE
• PILOT ADJUSTMENT AT MINIMUM
CHECK FOR LACK OF AIR FROM:
• DIRTY ORIFICE
• DIRTY LINT SCREEN, IF USED
• DIRTY PRIMARY AIR OPENING,
IF THERE IS ONE
• PILOT ADJUSTMENT AT MINIMUM
CHECK FOR:
• EXCESSIVE DRAFT AT PILOT
LOCATION
• RECIRCULATING PRODUCTS
OF COMBUSTION
CHECK FOR:
• HIGH GAS PRESSURE
THIS FLAME IS CHARACTERISTIC
OF MANUFACTURED GAS
CHECK FOR:
• HIGH GAS PRESSURE
• ORIFICE TOO SMALL
M3272A
M.S. Rev. 07-11