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Gas Connection
• The gas supply line shall be gas tight, sized and so
installed as to provide a supply of a gas sufficient to
meet the maximum demand of the heater without
loss of pressure.
• A shut off valve and appliance connector valve
should be installed in the upstream of the gas line
to permit servicing.
• Flexible pipe and any appliance connector valve
used for gas piping shall be types approved by
nationally recognized agencies.
• Any compound used on the threaded joint of the
gas piping shall be a type which resists the action
of liquefied petroleum gas (propane / LPG).
• Check the gas supply pressure immediately
upstream at a location provided by the gas
company. Supplied gas pressure must be within
the limits shown in the Specifications section.
• After completion of gas pipe connections all joints
including the heater must be checked for gas
tightness by means of leak detector solution, soap
and water, or an equivalent nonflammable solution,
as applicable. (Since some leak test solutions,
including soap and water, may cause corrosion or
stress cracking, the piping shall be rinsed with
water after testing, unless it has been determined
that the leak test solution is non-corrosive.)
Clearances to Combustibles
When determining where to install the appliance
the clearances to combustibles shown in the
figure must be followed. Also refer to the Safety
Behaviors and Practices section. The clearance
to combustibles from the top is zero.
• Refer to an approved pipe sizing chart if in doubt
about the size of the gas line.
• Install manual gas cut-off valve so that it can be
accessed for easy operation. Do not conceal
manual cut-off valve behind back spacer.
Rinnai Corporation ES11 Manual
15
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