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NORA Oilheat Technicians Manual

Oilheat Technician’s Manual piping ................................................................... 3-10 replacement ......................................................... 2-14, 3-5 sizes .................................................................... 3-5 types ................................................................... 3-8 - 3-9 underground ......................................................... 3-7 water problems .................................................... 3-4 Tanks, Evaluation Forms ................................................ 3-13 Tempering/Mixing Valve .................................................. 13-21 Tertiary Air ..................................................................... 1-9 Thermal-mechanical Control ........................................... 11-5 Thermal/Motor Overload Switch ..................................... 10-6 Thermistor ...................................................................... 12-18 Thermostats ................................................................... 12-5 3 wire vs. 2 wire ................................................... 12-5 connections .......................................................... 11-6 electronic ............................................................. 12-7 location ................................................................ 12-7 low voltage/line voltage ........................................ 12.-6 mounting .............................................................. 12-8 troubleshooting ..................................................... 12-13 Tools ............................................................................ 14-4 Total Gear Set Capacity ................................................. 4-5 Transformers .................................................................. 9-4 construction ......................................................... 9-6 iron core ............................................................... 8-16, 9-8 replacement ......................................................... 9-6 testing equipment ................................................. 9-8, 9-9 wiring ................................................................... 9-6 Triple Acting Aquastat Relays ........................................ 12-22 Trunks ............................................................................ 13-6 Tune-ups ........................................................................ 14-3 cleaning ............................................................... 14-7 procedures ........................................................... 14-5 safety .................................................................. 14-3 tools ..................................................................... 14-4 Turbulators ..................................................................... 13-9 Two Pipe System ........................................................... 4-6, 13-8, 13-10 Underground Fill Pipes ................................................... 2-7 Vacuum .......................................................................... 4-4, 4-5, 4-13 pump vacuum check ............................................ 4-25 vacuum gauge ...................................................... 4-5 vacuum power bleed ............................................ 4-11 vacuum reading .................................................... 4-5 vacuum test ......................................................... 4-14, 4-15, 4-24 Vacuum Relief Valves ..................................................... 13-20 Valves ............................................................................ 4-10 anti-siphon valve .................................................. 4-20 electric zone valves ............................................. 13-15 flow control .......................................................... 13-13 foot valve ............................................................. 4-21 mixing .................................................................. 13-21 oil safety valve ..................................................... 4-20 pressure reducing ................................................. 13-13, 13-21 pressure-regulating ............................................... 4-5 pressure relief ...................................................... 13-13 relief valve ........................................................... 13-17, 13-20 servicing .............................................................. 4-20 solenoid oil valves ................................................ 4-3, 4-18, 4-20, 8-14 tempering ............................................................. 13-21 thermal safety valve ............................................. 3-11, 4-21 vacuum relief valves ............................................ 13-20 Vaporstat ....................................................................... 12-14 Vent Alarms ................................................................... 3-10 Vent Pipes ..................................................................... 3-10 Viscosity ........................................................................ 2-5, 5-12 Voltage ........................................................................... 9-5, 9-8 Voltmeter ....................................................................... 8-18, 8-22 Volts ............................................................................ 8-4 measuring ............................................................ 8-18 Warm Air Systems ........................................................ 13-3 blowers ................................................................ 13-3 duct system ......................................................... 13-5 - 13-6 furnaces ............................................................... 13-3 troubleshooting ..................................................... 13-6 Warm Air Circuit ............................................................ 12-11 Warm Air Ducts ............................................................. 16-10, 16-15 Warm Air Fans/Blowers ................................................. 10-14 Warm Air Motors ............................................................ 10-14 Warm Air Limit Controls ................................................. 12-8, 12-11 Water Heater components ......................................................... 13-20 stack connections ................................................ 6-12, 6-13 Water Problems ............................................................. 2-7 Watts ............................................................................ 8-5 Zone Valves ................................................................... 13-15 Zoning ............................................................................ 13-14 Oilheat Technicians Manual—XVIII


NORA Oilheat Technicians Manual
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