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10’ OR LESS VENT CAP 2’ MIN. 2’ MIN. 5’ MIN.
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HORIZONTAL INSTALLATION FLOW > TO CHIMNEY TO BOILER VENT DAMPER VERTICAL INSTALLATION TO CHIMNEY VENT DAMPER AT BOILER DRAFT HOOD INSTALL VENT DAMPER WITH ACTUATOR TO SIDES OF VENT ONLY. DO NOT MOUNT ABOVE OR BELOW VENT. ACTUATOR MAY BE...
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DAMPER POSITION INDICATOR DAMPER OPEN JUMPER 24 VAC 120 VAC 60Hz DAMPER POSITION INDICATOR DAMPER CLOSED...
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1/2" Pipe 3/4" Pipe MODEL NAT PRO NAT PRO NAT PRO NAT PRO 0030 & 0042 125 350 500 0066 160 175 460 0090 125 325 400 0135 155 200 500 0180 1" Pipe 1 1/4" Pipe 115 300 425 System Maximum Models...
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CIRCULATOR VENT SENSOR BYPASS VALVE (MODELS 135 & 180 ONLY) BYPASS LINE TEMPERATURE AND PRESSURE GAUGE 2-STAGED CONTROLLER (MODEL 90 ONLY) PRESSURE RELIEF VALVE RELAY ADJUSTABLE HIGH LIMIT FIELD WIRING COMPARTMENT FAST RESPONSE TEMPERATURE SENSOR IGNITION MODULE (AUTO IGNITION ONLY) TRANSFORMER ROLL-OUT SENSOR GAS VALVE...
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