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John Wood 300 Series Installation And Operating Manual
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John Wood 300 Series Installation And Operating Manual

Residental gas water heaters, power direct vent gas models with hot surface ignition, not for use in manufactured mobile homes
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Download this manual See also: Instruction Manual
WARNING: If the information in these instruc-
tions is not followed exactly, a fire or explosion
may result causing property damage, personal
injury or death.
- Do not store or use gasoline or other flam-
mable vapours and liquids in the vicinity of
this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas sup-
plier's instructions.
• If you cannot reach your gas supplier, call
the fire department.
- Installation and service must be performed by
a qualified installer, service agency or the
gas supplier.
NOT FOR USE IN MANUFACTURED (MOBILE) HOMES
Read and understand instruction
manual and safety messages
before installing, operating or
servicing this water heater.
Failure to follow instructions and
safety messages could result in
death or serious injury.
Instruction manual must remain
with water heater.
WARNING

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Summary of Contents for John Wood 300 Series

  • Page 1 NOT FOR USE IN MANUFACTURED (MOBILE) HOMES WARNING: If the information in these instruc- tions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. - Do not store or use gasoline or other flam- mable vapours and liquids in the vicinity of this or any other appliance.
  • Page 4 WARNING WARNING Read and understand instruction Fire Hazard manual and safety messages For continued protection against before installing, operating or risk of fire: servicing this water heater. • Do not install water heater on Failure to follow instructions and carpeted floor. safety messages could result in •...
  • Page 5 CAUTION WARNING Improper Installation, use and service may result • Before servicing the water heater, make sure the blower assembly is unplugged in property damage. or the electrical supply to the water • Do not operate water heater if flood damaged. heater is tumed "OFF".
  • Page 9 BURN...
  • Page 11 WARNING Electric Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. EARTH GND Failure to do so can result in CAPACITOR death or electrical shock. BLOWER FLAME SENSOR HOT SURFACE IGNITER PRESSURE SWITCH (CLOSED) PRESSURE SWITCH (OPEN) PRESSURE SWITCH (CLOSED) HIGH LIMIT SWITCH (CLOSED) Circled numbers indicate...
  • Page 13 WARNING Fire or Explosion Hazard • Do not store or use gasoline or other flammable vapours and liquids in the vicinity of this or any other appliance. • Avoid all ignition sources if you smell gas. • Do not expose water heater control to excessive gas pressure.
  • Page 14 WARNING Breathing Hazard - Carbon Monoxide Gas • Flue gases may escape if vent pipe is deformed, broken, or not properly connected. Breathing carbon monoxide can cause brain damage or death. Always read and understand instruction manual. WARNING Breathing Hazard - Carbon Monoxide Gas •...
  • Page 16 BURN WARNING Toxic Chemical Hazard • Do not connect to non-potable water system.
  • Page 17 HOT WATER EXPANSION TANK (OPTIONAL) TO HOUSE COLD SUPPLY FIXTURE CHECK VALVE (IF USED REQUIRES EXPANSION TANK) COLD INLET EXTERNAL FLOW CIRCULATOR CONTROL HOSE BIB (OPTIONAL) MIXING VALVE RETURN OUTLET DRAIN/ WATER SUPPLY PURGE HEATER VALVE SPRING LOADED INTERNAL CHECK CIRCULATOR VALVE HANDLER...
  • Page 18 CAUTION Property Damage Hazard • Avoid water heater damage. • Install thermal expansion tank if necessary. • Do not apply heat to cold water inlet. • Contact qualified installer or service agency.
  • Page 19 WARNING Explosion Hazard • Temperature-pressure relief valve must comply with ANSI Z21.22-CSA4.4 and ASME code. • Properly sized temperature- CAUTION pressure relief valve must be installed in opening provided. • Do not plug, block, or cap the Water Damage Hazard discharge line.
  • Page 20 WARNING Breathing Hazard - Carbon Monoxide Gas • For operation above 3,079 metres (10,100 ft.) a high altitude orifice must be installed. • Contact a qualified installer or service agency. Breathing carbon monoxide can cause brain damage or death. Always read and understand instruction manual. T&P Relief Valve Insulation (Outlet opening on underside) Manual Relief Lever...
  • Page 21 WARNING Fire and Explosion Hazard • Contaminants in gas lines can cause fire or explosion. • Clean all gas piping before installation. • Install sediment trap in accor- dance with B149.1. WARNING Fire and Explosion Hazard • Use joint compound or tape compatible with natural gas and propane.
  • Page 22 CAUTION Property Damage Hazard • Avoid water heater damage. Fill tank with water before operating. •...
  • Page 23 CAUTION Improper Installation, use and service may result in property damage. This unit includes an air intake terminal and an exhaust vent terminal. WARNING Breathing Hazard - Carbon Monoxide Gas • Install vent system In accordance with codes. • Do not operate water heater if flood damaged. •...
  • Page 33 WARNING Breathing Hazard - Carbon Monoxide Gas Failure to install the appropriate screen could result in improper heater operation with attendant risk of property damage, personal injury or death by fire or carbon monoxide poisoning. Breathing carbon monoxide can cause brain damage or death. Always read and understand instruction manual.
  • Page 35 WARNING Breathing Hazard - Carbon Monoxide Gas Vent pipe connections to the blower must be properly seated and tightened to prevent the leakage of flue gases into the area. Breathing carbon monoxide can cause brain damage or death. Always read and understand instruction manual. CAUTION Property Damage Hazard •...

  • Page 39: For Your Safety Read Before Lighting

    FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. FLAMMABLE FLAMMABLE BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES. A.
  • Page 40 BURN...
  • Page 42 WARNING Explosion Hazard • Flammable hydrogen gases may be present. • Keep all ignition sources away from faucet when turning on hot water.
  • Page 43 WARNING Breathing Hazard - Carbon Monoxide Gas • Flue gases may escape if vent pipe is not properly connected. • Be alert for obstructed, sooted or deteriorated vent system to avoid serious injury or death. • Do not store corrosive chemicals in vicinity of water heater.
  • Page 44 DANGER Fire and Explosion Hazard • Do not place chemical vapour emitting products near air intake and exhaust terminations. • Do not use or store flammable vapour products such as gasoline, solvents or adhesives in the same room or area near water heater or other appliance.
  • Page 45 DANGER • Burn hazard. • Hot water discharge. • Keep hands clear of drain valve discharge. BURN...
  • Page 46 CAUTION Property Damage Hazard • Avoid water heater damage. • Inspection and replacement of anode rod required.
  • Page 47 WARNING Read and understand instruction manual and safety messages before installing, operating or servicing this water heater. Failure to follow instructions and safety messages could result in death or serious injury. Instruction manual must remain with water heater.

This manual is also suitable for:

301 series