A.O. Smith 100 Series, Руководство по обслуживанию

Страница: 8 / 80

8
Servicing should only be performed by a Qualified Service Agent
INSTALLATION CHECKLIST
The list below represents some of the most critical installation requirements that, when overlooked, often result in operational
problems, down time and needless parts replacement. Before performing any troubleshooting procedures use the list below to
check for installation errors. Costs to correct installation errors are not covered under the limited warranty. Ensure all installation
requirements and instructions contained in the Instruction Manual that came with the boiler/water heater have been observed and
followed.
1.
The vent (exhaust) pipe must not be combined or connected to any other appliance’s vent system or chimney.
2. The intake air pipe must not be combined or connected to any other appliance’s intake air piping.
3. The boiler/water heater(s) covered in this manual are condensing appliances. Condensate will form in the vent pipe during normal
operation, condensate can also form in the intake air piping in certain circumstances. Ensure the intake air and/or vent piping
is not installed in a manner that will allow water to be trapped in the piping. This will lead to blocked exhaust and/or blocked air
intake fault conditions and Control System lock outs.
4. Ensure the intake air and/or vent piping is the correct size for the installed length. See the venting requirements section in the
Instruction Manual that came with the boiler/water heater. Using smaller pipe than is required will lead to blocked exhaust and/or
blocked air intake fault conditions and Control System lock outs.
5. Ensure the intake air and/or vent piping are within the maximum equivalent lengths required in the Instruction Manual that came
with the boiler/water heater. Exceeding the maximum length or number of elbows allowed will also lead to blocked exhaust and/
or blocked air intake fault conditions and Control System lock outs.
6. Ensure there is a water trap formed in the condensate drain tube/line connected to the exhaust elbow on the boiler/water heater
and that the condensate drain is flowing freely. Condensate drain blockage will cause the heat exchanger to fill with water and
lead to blocked exhaust fault conditions and Control System lock outs.
7. Ensure the vent and intake air terminations have adequate clearances from each other and the terminations of other appliances.
Failure to maintain adequate clearances can cause the recirculation of flue gases between the vent and intake air piping.
Recirculation of flue gases will cause poor combustion, sooting, ignition failure, rough starts, rough operation, premature failure
of the heat exchanger and icing of the combustion air intake during severe cold weather.
8. Direct vent terminations being installed in dead air spaces such as alleys, atriums, and inside corners can also cause the
recirculation of flue gases between the vent and intake air piping. To prevent the recirculation of flue gases, maintain as much
distance as possible between the intake air and vent terminations.
9. Ensure the screens in the factory supplied terminations are securely installed to prevent blockage in the intake air and/or vent
piping.
10. On Direct Vent installations ensure the screen at the intake air connection on the water heater was removed before the intake air
piping was connected.
11. Ensure the power supply connections to the water heater are polarity correct. Use the Digital Multi Meter to verify correct polarity
and ground at an outlet the water heater is plugged into. Reversed polarity (neutral and hot wires reversed) will cause the AC
Reversed fault condition and Control System lock out.
12. Ensure the boiler/water heater and the burner are properly grounded. The Control System requires an adequate earth ground
for flame sensing (verification). Inadequate grounding to the water heater and/or the burner will cause the Ignition Failure fault
condition and Control System lock out.