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 WA686M Tankless Water Heater
Typical Installation (Some Items May Not Apply)
1
16
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Expansion Tank
(If Needed)
To Hot Water
Faucet (S)
Pressure
Relief Valve
Drain Valve
Discharge Line
(To Suitable Drain)
Manual Gas
Appliance
Shut-Off
(Supplied)
Check Valve
Or Backflow
Preventer
Summary of Contents for WA686M-NG
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