Stimmen - , Durchschnittliche Bewertung: ( )

Anleitung A.O. Smith, modell S9371A

Hersteller: A.O. Smith
Dateigröße: 1.22 mb
Dateiname:

Unterrichtssprache:

Das Dokument wird geladen, bitte warten

HerunterladenSchließen

Das Dokument wird geladen, bitte warten

HerunterladenSchließen

The burner serves as the common grounding area. If there is not a good metal-to-metal contact between the burner and ground, run a lead from the burner to ground. NOTE: “Earth” ground is not required. S937XA Hot Surface Ignition Versions These models provide operating control of a direct ignition system using a hot surface igniter. Additional components required to complete the system must be ordered separately. They include: • Dual Valve Combination Gas Control: Any direct ignition gas control with 2.0A maximum main valve rating. VR8205, VR845, VR854, VR8450, or VR8540 recommended. • Hot Surface Igniter: Norton Model 201 or 271 or equivalent. NOTE: If igniter other than Norton Model 201 or 271 is used, the igniter must meet the following minimum specifications, required over the life of the igniter: 1. Igniter must reach 1000°C (1832°F) within 34 seconds with 102 Vac applied. 2. Igniter must maintain at least 500 megohms insulation resistance between the igniter leadwires and the igniter mounting bracket. 3. Igniter current draw at 132 Vac must not exceed 5 A. Sensor: Separate sensor required. Honeywell Q354 recommended. Igniter Wiring: Provide wiring harness to suit application. • Leadwires: No. 18 AWG, stranded copper with 105°C rated, 1/16 in. AWM insulation. • Terminals: Insulated. See Table 4 for HSI specific connectors. Transformer: Add current ratings of module, gas control, vent damper and any other components of the control system to determine transformer size requirements. Table 2. Specific Ignition Timings. Model Ignition Type Draft Type No. of IgnitionTrials Igniter/ Sensor Type Automatic Restart Time Ignition Activation Perioda Prepurge Timingb Postpurge Timingb S9360A Intermittent Pilot - Spark Induced 3 Separate 1 hour N/A 15 5 S9360A Intermittent Pilot - Spark Atmospheric 3 Separate 1 hour N/A 1 5 S9370A Direct Hot Surface Induced 3 Separate 1 hour 2.5 5 15 a Ignition Activation Period is the time that the hot surface igniter remains powered after the gas valve opens. b Purge Timing specified in seconds. 69-2076—01 6 S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS CIRCULATOR SPARK IGNITER FLAME SENSE INDUCER L1 L2 GND GND DAMPER ENVIRACOM DIAGNOSTIC SENSOR 1 SENSOR 2 ENVIRACOM DISPLAY GAS CONTROL MV PV PV/ MV PRESSURE SWITCH LIMIT SWITCH 1 1 S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS CIRCULATOR SPARK IGNITER FLAME SENSE INDUCER L1 L2 GND GND DAMPER ENVIRACOM DIAGNOSTIC SENSOR 1 SENSOR 2 ENVIRACOM DISPLAY GAS CONTROL MV PV PV/ MV PRESSURE SWITCH LIMIT SWITCH 1 1 24 VAC TRANSFORMER 1 OPTIONAL DEPENDING ON CONFIGURATION M24216 Fig. 4. Spark Ignition Wiring (S936X). 7 69-2076—01 S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS SENSOR 1 SENSOR 2 GAS CONTROL MV MVPRESSURE SWITCH LIMIT SWITCH M24218 ENVIRACOM DISPLAY ENVIRACOM DIAGNOSTIC 24 VAC TRANSFORMER L2 L1 GND FLAME SENSE HOT SURFACE IGNITER CIRCULATOR INDUCER GND S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS SENSOR 1 SENSO...