Gas Pressure Regulation; Operation; Precautions - A.O. Smith BT- 65 Installation & Service Instructions Manual

MANIFOLD PRESSURE SETTING
Model Type of
Number Gas
BT-65 Natural
BT-65 Propane

OPERATION

It is recommended that a qualified person perform the initial firing
of the heater. At this time the user should not hesitate to ask the
individual any questions which he may have in regard to the
operation and maintenance of the unit.
THE GAS VALVE MUST HAVE BEEN IN THE OFF POSITION FOR
AT LEAST 5 MINUTES. This waiting period is an important safety
step. Its purpose is to permit gas that may have accumulated in
the combustion chamber to clear. IF YOU DETECT GAS ODOR AT
THE END OF THIS PERIOD DO NOT PROCEED WITH LIGHTING.
RECOGNIZE THAT GAS ODOR, EVEN IF IT SEEMS WEAK, MAY
INDICATE PRESENCE OF ACCUMULATED GAS SOMEPLACE IN
THE AREA WITH RISK OF FIRE OR EXPLOSION. SEE THE FRONT
PAGE FOR STEPS TO BE TAKEN.
Before lighting the pilot and operating the heater, the following
conditions must exist:
TABLE 2
Manifold
Input Pressure
65,000 Btu/hr 4.0 in. W.C.
16.7 KW/hr 1.0 Kpa
55,000 Btu/hr 10.0 in. W.C.
16Kw 2.49kPa
WARNING
• Entire system filled with water.
• Air purged from all lines and no leaks (gas and water).
• All gas and water lines open.

PRECAUTIONS

DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER
WATER. The heater must be replaced.
IF THE UNIT IS EXPOSED TO THE FOLLOWING, DO NOT
OPERATE HEATER UNTIL ALL CORRECTIVE STEPS HAVE BEEN
MADE BY A QUALIFIED SERVICEMAN:
1. EXTERNAL FIRE.
2. PHYSICAL DAMAGE.
3. FIRING WITHOUT WATER.
4. SOOTING.
NEVER OPERATE THE HEATER WITHOUT FIRST BEING CERTAIN
IT IS FILLED WITH WATER AND AN A.G.A. TEMPERATURE AND
PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE
OPENING OF THE HEATER.
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO
SHUT OFF, TURN OFF THE MANUAL GAS CONTROL VALVE TO
THE APPLIANCE.
A checklist is included in the SERVICE INFORMATION section of
this manual. By using this checklist the user may be able to make
minor operational adjustments and save himself unnecessary
service calls. However, the user should not attempt repairs which
are not listed in this section.
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