Crown Boiler TWZ125 Specifications download pdf (Page 17)

FIGURE 14: TANKLESS HEATER PIPING

IX Fuel Line Piping

Fuel line piping design, materials and construction must be in accordance with local building codes, requirements of the local

authority having jurisdiction, and, the latest edition of Installation of Oil-Burning Equipment (ANSI/NFPA 31). Refer also to

the instruction manuals provided with the burner and oil pump.

Depending on the location of the fuel oil storage tank in relation to an oil burner, there are four types of oil piping systems

generally being used:

a) ONE-PIPE GRAVITY SYSTEM - used when a fuel oil storage tank is positioned above an oil burner fuel pump. See

Figure 15. A vertical distance from top of the tank to center line of the pump (Dimension ‘H’) over 8 feet will result in

a pump inlet pressure in excess of the 3-psi limit in NFPA-31.

FIGURE 15: ONE-PIPE GRAVITY SYSTEM

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Crown Boiler TWZ125 Specifications Page 17