Blower Speed Control - State Water Heaters SUF 119300 Service Handbook

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.
Below is a chart for the blower rpms.
Note: 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.
HEATING SPEED- RPM
NATURAL GAS
*RANGE
SUF 60120 5265-6435
SUF 100150 4815-5885
SUF 100199 6480-7920
SUF 100250 8145-9955
SUF 119300 3105-3795
SUF 119400 4163-5088
SUF 119500 5220-6380
HEATING SPEED- RPM
PROPANE GAS
*RANGE
SUF 60120 5940-7260
SUF 100150 4613-5638
SUF 100199 6188-7563
SUF 100250 7740-9460
SUF 119300 3150-3850
SUF 119400 4050-4950
SUF 119500 5085-6215
*Note: ±10% Heating Speed RPMs are based from the Nominal "Certification" Heating Speed RPMs.
MXI Series 300/301
Production
5460
5185
6880
8700
3450
4625
5750
Production
6060
4992
6550
8230
3200
4200
5225
Servicing should only be performed by a Qualified Service Technician
LOW FIRE IGNITION SPEED
SPEED RPM RPM
3220 3500
2725 3000
2725 3000
2725 3000
2350 4500
2350 4500
2350 4500
LOW FIRE IGNITION SPEED
SPEED RPM RPM
3750 3000
2625 5100
2625 5100
2625 5100
2310 5770
2310 5770
2310 5770
CONDENSATE CONDENSATE
SPEED RPM SPEED TEMP
5460 80°F
5185 90°F
5185 90°F
5185 90°F
3450 80°F
3450 80°F
3450 80°F
CONDENSATE CONDENSATE
SPEED RPM SPEED TEMP
6060 80°F
4992 90°F
4992 90°F
4992 90°F
3200 80°F
3200 80°F
3200 80°F
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