Rinnai EX11C (RHFE-265FTA) - Manuel (Page 23)

Rinnai Corporation EX08C, EX11C Manual 23
Extension Kit Installation (EX11C only)
INCORRECT
• Too many bends (limit is 2)
• Air intake hose is above
exhaust pipe
Extension through the top
AIR
INTAKE
HOSE
EXHAUST
PIPE
PIPE
CLAMP
PIPE
STOPPER A
CLAMP
Extension to the right (facing appliance)
CLAMP
PIPE
STOPPER A
PIPE
CLAMP
LONG
BENT
ELBOW
EXHAUST
ELBOW
AIR
INTAKE
HOSE
EXHAUST
PIPE
Extension to the left (facing appliance)
CLAMP
PIPE
STOPPER A
PIPE
CLAMP
LONG BENT ELBOW
EXHAUST
ELBOW
AIR
INTAKE
HOSE
EXHAUST
PIPE
If necessary, extension kits are available to extend the
exhaust line and air intake hose between the manifold
and the appliance.
(1) The maximum vent length is 13 feet (4 m) with 2
bends. The bent pipe attached to the appliance
does not count toward the max limit of 2 bends.
(2) For altitudes at or below 2000 feet (610 m), the
maximum vertical length is 8 feet (2.4 m). For
altitudes above 2000 feet (610 m), the maximum
vertical length is 5 feet (1.5 m).
(3) If the extension is longer than that shown in the
table below, the condensate may overflow the
condensation pan. Therefore, extensions
exceeding this length should drain to the outside
and sloped 3° downward.
(4) Do not allow any low points or sagging in the
exhaust line. Otherwise, condensate may block
the exhaust and affect combustion.
(5) Vent extensions installed in unconditioned air
space must be insulated with high temperature
insulation and must be accessible.
(6) Vent extensions must not be concealed per NFPA
54 and must be accessible allowing inspection and
repair. Decorative covers are available from
Rinnai.
These figures show the 3 possible ways that the
extension exhaust line and air intake hose may be
directed away from the appliance. All 3 views are from
behind the appliance. For your configuration,
position the air intake hose as shown.
8 feet (2.4 m) at or below 2000 feet (610 m)
5 feet (1.5 m) above 2000 feet (610 m)