Heating System Piping - RBI FUTERA III Series HeatNet Installation & Operation Manual

FUTERA III INSTALLATION AND OPERATION INSTRUCTIONS
Relief Valve
Pipe the discharge of the pressure relief valve as shown
in Figure 8.
WARNING: Never install any type of valve between
the boiler/water heater and the relief valve or an
explosion causing extensive property damage,
severe personal injury or death may occur!
Figure 8 – Futera III Piping

HEATING SYSTEM PIPING

General Piping Requirements
All heating system piping must be installed by a qualifi ed
technician in accordance with the latest revision of the
ANSI/ASME Boiler and Pressure Vessel Code, Section IV,
and ANSI/ASME CSD-1, Standard for Controls and Safety
Devices for Automatically Fired Boilers. All applicable local
codes and ordinances must also be followed. A minimum
clearance of 1 in, 25 mm must be maintained between
heating system pipes and all combustible construction. All
heating system piping must be supported by suitable
hangers not the boiler. The thermal expansion of the
system must be considered when supporting the system.
A minimum system pressure of 12 psig, 82.7 kPa must
be maintained.
Flow Switch
The fl ow switch supplied with the boiler/water heater must
be wired to the terminal strip in the control panel to prevent
the boiler from fi ring unless there's adequate water fl ow
through the unit. The fl ow switch must be installed in the
supply piping adjacent to the boiler outlet connection.
CAUTION: Failure to properly install the fl ow switch
may result in damage to the boiler/water heater heat
exchanger voiding the warranty!
Heating Boiler Piping Connections
The supply and return connections should be sized to suit
the system, see Table 6.
Table 6 – Supply & Return Pipe Sizing (Flanged)
ModelSize
500 thru 1000
1250 thru 2000
13
SupplySize Return Size
2" 2"
2 1/2" 2 1/2"