NOTICE: The National Fuel Gas Code (NFGC) mandates a manual gas shut- off
valve: See (NFGC) for complete instructions. Local codes or plumbing authority
requirements may vary from the instructions or diagrams provided and take
precedent over these instructions.
Installing The CA686M Tankless Water Heater
Typical Installation ( Some Items May Not Apply)
Expansion Tank
(If Needed)
To Hot Water
Faucet (S)
Drain Valve
Discharge Line
(To Suitable Drain)
Manual Gas
Appliance
Shut-Off
(Supplied)
Check Valve
Or Backflow
Preventer
Pressure
Refief Valve
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3330-A Marathon Ct Charleston, SC 29418
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