Specifications

33
A. O. Smith Water Products Service Handbook
Ashland City, Tennessee 2005
©
Training Department
ELECTRICAL INFORMATION
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Inlet or Tank Probe
Minimum Set Point - 80°F (27°C) Maximum Set Point - 190°
(87.5°C) or 220°F (104°C) (Via Dip Switch "G")
ADJUSTABLE SETTING (ON CCB)
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ENVIRONMENT
*Included with IRI (Industrial Risk Insurance) equipped models.
SWITCHES - ALL ARE 24VAC STATISTICS INCH W.C. CONNECTS TO RECEPTACLE:
11 & 4NC BCC.O.N)TPO( hctiwS tneV rewoP
Differential Blower Prover N.O. .70 ± .05" to close CCB CN14
Blocked Flue Switch N.C. opens at .60 ± .05" CCB CN14
*High Gas Pressure Switch N.C.
opens at 5.25" Nat.;
12.8" Prop CCB CN13
Low Gas Pressure Switch N.O. closes at 4.5" CCB CN13
31NC BCC.O.NhctiwS wolF retaW
11NC BCC.O.NhctiwS ffo-tuC retaW woL
*
*IRI Gas Valve Sense
SUPPLY CIRCUIT
BOARD 120 VAC; 60 Hz 18-30 VAC, 60 Hz
TEMP SENSING TYPE SENSOR CONNECTS TO RECEPTACLES
Probe#1 Outlet water Thermistor CCB CN 1
High Limit 24 VDC-NC CCB CN 14
Probe #2 Inlet water Thermistor CCB CN1
2NC BCCrotsimrehT3# eborP
3NC BCCCAV 42tatsomreht knat etomeR)tpO( ro
CENTRAL CONTROL BOARD
Remote tank Temp. probe