Prestige SOLO 110.pdf - Bloom Lake Farms

Outdoor Reset ControlSECTION XI - Outdoor Reset ControlThe boiler setpoint for a heating call can befixed or vary with the outdoor temperature. Ifthe application requires a constant supply temperaturefrom the boiler, the outdoor temperaturesensor should not be connected to the boiler.If an outdoor temperature sensor is connectedto the boiler, the outdoor reset functionis automatically enabled and will vary the CHsetpoint with the change in outdoor temperature.The outdoor reset function has no affecton the DHW setpoint during a domestic call.Fig. 25: Sensor Enclosure and ComponentsMounting the Outdoor Sensor1. Remove the front cover and mountingscrews / anchors from the sensor enclosure.2. When mounting the enclosure the exteriorwall selected should represent the heat loadof the building. Typically a northern ornortheastern wall will suit most buildings.A southern facing wall may suit buildingsthat have large glass walls or windows onthe southern face.3. Ensure the sensor enclosure is shieldedfrom direct sunlight or the effects of heat orcold from other sources (exhaust fans,appliance vents...) to prevent false temperaturesensing.4. Mount the sensor enclosure at an elevationon the exterior wall to prevent accidentaldamage or tampering.5. Avoid mounting the enclosure in areas subjectedto excessive moisture.6. Once an area on the exterior wall has beendetermined, to affix the enclosure use theenclosure as a template to mark the locationof the mounting screws.7. Using a 3/16” drill bit, drill 2 pilot holes onthe marked locations.8. Tap the enclosed plastic anchors into thepilot holes. Use care not to damage theanchors.9. Mount the sensor enclosure using thescrews provided.Wiring the Sensor1. Remove the sealing nut and sealing gasketfrom the sensor enclosure.2. Route two 18 gauge wires through the sealingnut and gasket. Connect the wires tothe sensor terminals 1 and 2.3. Re-insert the sealing gasket and tighten thesealing nut to the sensor enclosure.4. Route the sensor wire back to the PRES-TIGE Solo boiler, ensuring the wires arenot run parallel to telephone or powercables.NOTICEIf the sensor wires are located in an areawith sources of potential electromagneticinterference (EMI) the sensor wiresshould be shielded or the wires should berouted in a grounded metal conduit. Ifusing shielded cable, the shielding shouldbe connected to the common ground ofthe unit.5. Connect the sensor wires to the outdoor sensorterminals on the 24V terminal strip locatedinside the boiler enclosure (see boilerwiring diagram, Fig. 20 page 32).50