NORITZ AMERICA CORPORATION NH199-DV Manuel D'installation Et Mode D'emploi page 16

10.
Relief Valve Mounting
Before installing the relief valve, test the piping at 45 psi with the cap on.
1. Remove the front cover of the unit.
2. Remove the single screw holding the cap to the
housing.
• Do not lose this screw, it will be used in a
later step.
3. Remove the cap.
4. Locate the gasket supplied with the boiler, remove
the paper backing, and attach it to the supplied fitting
around the flange.
Gasket
5. Install the relief valve (supplied separately) in the fitting
before attaching it to the boiler.
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Boiler Case
Housing
Screw
Boiler Case
Housing
Cap
Paper Backing
Fitting
Safety Relief Valve
Fitting
6. Insert the relief valve assembly into the housing being
careful not to damage the o-ring. Insert and tighten
the screw that was previously removed in step 2.
Relief Valve Assembly
Press the fitting firmly into the housing while tightening
the screw. Failure to do so could cause a leak.
Screw
7. Secure the relief valve assembly to the boiler case
with the 2 supplied screws.
Relief Valve Assembly
Screw
8. Replace the front cover of the unit.
NOTE
When attaching the drain line to the end of the relief
valve, do not apply excess force to the end of the relief
valve assembly. Excessive force can damage both the
casing and the internal piping.
Boiler Case
Housing
O-ring
Screw
Boiler Case