Noritz NH199-DV Installation And Instruction Manual

Also see for NH150-DV: User's information manual

Contents

1610. Relief Valve Mounting1. Remove the front cover of the unit.2. Remove the single screw holding the cap to thehousing.• Do not lose this screw, it will be used in alater step.3. Remove the cap.4. Locate the gasket supplied with the boiler, removethe paper backing, and attach it to the supplied fittingaround the flange.5. Install the relief valve (supplied separately) in the fittingbefore attaching it to the boiler.7. Secure the relief valve assembly to the boiler casewith the 2 supplied screws.6. Insert the relief valve assembly into the housing beingcareful not to damage the o-ring. Insert and tightenthe screw that was previously removed in step 2.8. Replace the front cover of the unit.NOTEWhen attaching the drain line to the end of the reliefvalve, do not apply excess force to the end of the reliefvalve assembly. Excessive force can damage both thecasing and the internal piping.Press the fitting firmly into the housing while tighteningthe screw. Failure to do so could cause a leak.Before installing the relief valve, test the piping at 45 psi with the cap on.