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C: Standard Piping Installation Requirements
Observe the following guidelines when making the actual installation of the boiler piping:
1) The relief valve is packaged loose with the boiler and must be installed in the location shown in Figure 2.1. The relief
valve is set to open at 30 psi. If the valve is replaced, the replacement must have a relief capacity in excess of the DOE
heating capacity for the boiler. Pipe the discharge of the relief valve to a location where water or steam will not create a
hazard or cause property damage if the valve opens. The end of the discharge pipe must terminate in an unthreaded pipe.
If the relief valve discharge is not piped to a drain, it must terminate at least 6 inches above the fl oor. Do not run relief
valve discharge piping through an area that is prone to freezing. The termination of the relief valve discharge piping must
be in an area where it is not likely to become plugged by debris.
DANGER
•
PIPE RELIEF VALVE DISCHARGE TO A SAFE LOCATION.
• DO NOT INSTALL A VALVE IN THE RELIEF VALVE DISCHARGE LINE.
• DO NOT INSTALL RELIEF VALVE IN A LOCATION OTHER THAN THAT SPECIFIED BY THE
FACTORY.
• DO NOT PLUG THE RELIEF VALVE DISCHARGE.
Figure 9.9: Boiler Head Loss