RBI Gas boilers - Page 14

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Figure 10 Typical Primary/Secondary, Low Temperature Piping System (See Notes)
NOTES:
1. Boiler circuit piping must be sized large enough to handle maximum  ow through unit.
2. Boiler and pump purging required. Air must be purged from 3-way valve after the boiler is  lled. Use purge
valves provided. Purge valve may be located on pump  ange. On multiple boiler installations the  ow switch
may fail due to trapped air. See manual for procedure.
3. All boilers furnished with factory mounted outlet water temperature gauge.
4. For HeatNet operation, a sensor is required and installation at a minimum of 12" from the primary tee.
Notice: These drawings show suggested piping con guration, valving and are diagrammatic.
Check with local codes and ordinances for speci c requirements.
H-16 REV C
H-16 REV C