Rinnai EX11C Installation Manual download pdf (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

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)

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 79 80

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Rinnai EX11C Installation Manual Page 23

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