Rinnai RH180 Installation Manual download pdf (Page 16)

16 RH180 Manual

Venng

This water heater must be vented vercally to the

outside of the building or structure.

This water heater is not designed or cered for side

wall horizontal vent terminaons.

All installaons must be vented in accordance with

Naonal Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest

edion and the requirements of state or local codes.

In Canada, the furnaces must be vented in accordance

with the Naonal Standard of Canada, CAN/CSA

B149.1 and CAN/CSA B149.2 - latest edions and

amendments and the codes of the local ulity or

other authority having jurisdicon.

NOTE: The vercal height of the Category I venng

system must be at least as great as the horizontal

length of the venng system.

Venng Requirements

Screw

Vent Pipe (4” diameter)

Screw

WARNING

TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH

DUE TO ASPHYXIATION,

COMMON VENTING WITH OTHER MANUFACTURER’S

INDUCED DRAFT APPLIANCES IS NOT ALLOWED.

WARNING

Devices aached to the vent system intended to

increase system eciency by reducing the heat loss of

the vent system MUST not be used on this water

heater. Rinnai accepts no liability for damage or injury

if such devices are installed on the vent system with

this appliance.

WARNING

Vent Pipe Assembly: To avoid damage to the vent and

vent adapter, pre drill holes with a 1/8” drill bit.

Aach the vent to the vent adapter with #8 screws.

 All vent (Category I) passing through a concealed

space, an ac or oor, MUST be Type B double wall

vent and/or Type B double wall vent connectors. For

vent passing through an interior wall, use Type B vent

with venlated thimble ONLY.

 The RH180 CANNOT be vented into any chimney

serving an open replace or any other solid fuel

burning appliance.

 Use the same diameter Category I connector or vent as

permied by NFPA 54/ANSI Z223.1 venng tables.

 It is not permied to reduce vent diameter (4”).

 It is emphasized that vercal Category I vent or vent

connector runs be as short and direct as possible.

 Vercal outdoor runs of type B or ANY single wall vent

below the roof line are NOT permied.

 All horizontal vent runs to be sloped up away from the

RH180 a minimum of ¼” (6mm) per foot.

 All horizontal vent runs are to be supported, at a

minimum, every 6' (2m) using suitable clamps and/or

metal straps.

 Exisng gas vent or chimney is to be checked to ensure

they meet clearances and local codes.

The RH180 can ONLY be connected to a manufactured

chimney or vent that complies with a recognized

standard. Venng into a masonry or concrete chimney

is only permied as outlined in the NFPA 54/ANSI

Z223.1 Naonal Fuel Gas Code venng tables. It is

therefore a contractual obligaon on the part of the

installer to follow all safe venng requirements.

Poison carbon monoxide gas hazard.

If this appliance is replacing a previously common

vented water heater, it may be necessary to resize

the exisng chimney liner or vent to prevent over siz-

ing problems for the other remaining appliance

(s). See codes and/or standard having jurisdicon.

Failure to properly vent this water heang appliance

or other appliance(s) can result in death, personal

injury and/or property damage.

WARNING

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Rinnai RH180 Installation Manual Page 16

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