Natural Gas Fuel Piping System - Honeywell Hauck MEGASTAR MS-25 Instructions Manual

I. NATURAL GAS FUEL PIPING SYSTEM
Eclipse recommends the use of gas manifolds that meet NFPA
guidelines. NFPA requires two fuel safety shutoff valves wired in
series and a shutoff valve downstream of the second (blocking)
safety shutoff valve, and high and low pressure switches that are
interlocked with the burner's safety shutoff valves. Eclipse gas
manifolds have been designed to ensure compliance to NFPA
requirements.
Figure 2. Typical Schematic of Burner Gas Piping
1. Install a controlling gas regulator in the main gas line within 25 ft (7.6m) of the burner. This
regulator should be sized to provide the required gas flow at the inlet of the burner manifold.
Exact gas pressure must be set at the initial start-up depending on piping configuration, burner
size, and maximum capacity desired. Regular settings are designed for best operation and
compliance with NFPA 54 (see Figure 2).
2. A manual equipment isolation valve, sediment trap and gas strainer must be installed upstream
of the gas control regulator to ensure compliance to NFPA requirements. The manual
NOTE
Page 10
MS-9
Y7863
(NOT TO SCALE)