A.O. Smith Cyclone XL 100 Series, Руководство по обслуживанию

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BLOWER SPEED CONTROL BLOWER SPEED CONTROL
The CCB monitors a feedback signal from a sensor that is installed on the blower. The CCB interprets the pulse signal from the sensor
and then sends a signal to the blower to produce the proper blower speed and input.
These models are capable of modulating their input rate. Therefore, the RPM readings can be in between the Heating Speed and
Minimum Modulation Speed RPMs. The input rate should be verified with the water heater operating at full input rate.
Table 2 and Table 3 list the RPMs for each model at high heating speed, low fire speed, and ignition speed.
Table 2. Blower RPMs - Nateral Gas
Nateral Gas Hirh Heatinr Speed - RPM Low Fire Speed RPM Irnition Speed RPM
BTHS 750 4475 2300 2000
BTHS 1000 6000 2300 2000
* Note: ±10% High Heating Speed RPMs are based from the Nominal “Certification” Heating Speed RPMs.
Table 3. Blower RPMs - Propane Gas
Propane Gas Hirh Heatinr Speed - RPM Low Fire Speed RPM Irnition Speed RPM
BTHS 750 4350 2700 2000
BTHS 1000 5800 2700 2000
* Note: ±10% High Heating Speed RPMs are based from the Nominal “Certification” Heating Speed RPMs.
BURNER ASSEMBLY BURNER ASSEMBLY
The Burner is a radial design burner with a steel fiber jacket on the outer surface and is part of a larger Burner Assembly. Figures below
show side views of the complete Burner Assembly removed from the water heater with key components identified. See the exploded
view in Figure 4 (page 7) also.
Flame rod, ½” to
burner surface
Spark igniter,
0.125” spark gap,
~1/2” to burner
surface
Firere 20. Berner Assembly