
Installation and Service Instructions Midco International Inc.4140 West Victoria Street Chicago, Illinois 60646tel 773.604.8700 fax 773.604.4070
Part 2 ServiceCAUTION: Do not tamper with the unit or controls. If trouble occurs contact yourserviceman.CAUTION: Be sure that the main and pilot manu
XI Blower and MotorXII Gas Pressure RegulatorXIII Main Automatic SafetyShut-Off ValveV48 Diaphragm Gas Valve (Not for use in Canada)V5055 Valve Body w
V5055 Valve Body with Motorized Actuator Cont.XIV Automatic Gas Valve Leak TestXV Flame SafeguardXVI Special Equipment Do not disassemble the valv
Part 1 InstallationI SpecificationsBurner Style Power TypeFlame Safeguard Instantaneous electronic typewith flamerod detection (flame rectification).•
III Preparation of theHeating ApplianceContinuedIV Combustion Chamber Make sure that the boiler gauge glass is clean so that water level can be ea
For warm-air furnaces or Scotch Marine boilers with tubular combustion chambers, thecombustion chamber length must be great enough to exceed the
IV Combustion ChamberContinuedDetailed information is available on request. Since firing door installations will generally leave no openings for f
Figure 7: Conventional Boiler—Small FireboxFigure 8: Tubular Combustion ChambersFigure 9: Firing Door Installation in Three Pass BoilerIV Combustion C
V Chimney and Flue PipeThe chimney should be inspected for unsafe conditions such as deteriorated masonryand excessive soot or other blockage or poten
VI ElectricalVII Gas Piping The burner when installed, must be wired and grounded in accordance with local codes or inthe absence of local codes,
VII Gas Piping Cont.VIII Burner Start-Up In higher gas pressure systems (over 14" W.C.) it is very important to install the properpressure re
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