Rinnai R98LSi-ASME Installationshandbuch PDF herunterladen (Seite 26)

26 VB Series Indoor LS Manual

Venting Instructions

• This water heater is a direct vent water heater and

therefore is certified and listed with the vent

system. You must use vent components that are

certified and listed with the water heater model.

• Do not combine vent components from different

manufacturers.

• The vent system must vent directly to the outside

of the building and use outside air for combustion.

• Venting should be as direct as possible with a

minimum number of pipe fittings.

• Avoid dips or sags in horizontal vent runs by

installing supports per the vent manufacturer’s

instructions.

• Support horizontal vent runs every four feet and all

vertical vent runs every six feet or in accordance

with local codes.

• Vent diameter must not be reduced.

• Do not connect the venting system with an existing

vent or chimney.

• Do not common vent with the vent pipe of any

other water heater or appliance.

• Vent connections must be firmly pressed together

so that the gaskets form an air tight seal.

• RL75i, RL94i: The vent piece connected to the

water heater must be secured with one self-tapping

screw.

• Refer to the instructions of the vent system

manufacturer for component assembly instructions.

• If the vent system is to be enclosed, it is suggested

that the design of the enclosure shall permit

inspection of the vent system. The design of such

enclosure shall be deemed acceptable by the

installer or the local inspector.

Condensate

Condensate formation can occur in high efficiency

direct vent appliances. To prevent condensate

damage follow these instructions.

Intake / Exhaust Guidelines

Refer to the specific instructions on your vent product for additional

installation requirements.

NOTICE

Provisions must be made to prevent the condensate

from entering the water heater. Without proper

drainage or disposal, condensate will damage the heat

exchanger.

Do not plug or cap the integrated condensate line.

Without proper drainage or disposal, condensate will

damage the water heater.

WARNING

The condensate trap must be primed before operation

to prevent exhaust gases from entering the building.

NOTICE

If it becomes necessary to access an enclosed vent

system for service or repairs, Rinnai is not responsible

for any costs or difficulties in accessing the vent

system. Warranty does not cover obtaining access to

an enclosed vent system.

• Vertical terminations must incorporate a

condensate drain and trap as close as possible to

the appliance.

• RL75i, and RL94i water heaters have an integrated

condensate collector.

• Rinnai offers a condensate trap.

• Regions of cold climate will create more

condensate in the vent system. The condensate

collector should be used in cold climates.

• Use only vent that is approved and identified as

acceptable for your particular model.

• Do not use PVC, CPVC, ABS or galvanized

material to vent this appliance.

• Slope the venting toward the appliance according to

the vent manufacturers installation instructions.

• All condensate must drain and be disposed of per

local codes.

• Use only PVC or CPVC pipe for the condensate

drain line.

• The condensate drain pipe should be as short as

possible and have a downward pitch.

• Do not connect the condensate drain pipe directly

to the rain sewer.

• The condensate drain pipe (along its entire length)

must be at least the same diameter as the drain

line, (3/8 inch NPT).

• The end of the condensate drain pipe should be

open to the atmosphere. The end should not be

under water or other substances.

• Do not connect the condensate drain line with an

air conditioning evaporator coil drain.

• To minimize freezing of the condensate, run the

condensate drain line through an interior wall or

between insulation and an interior wall.

• The condensate collector should be used for all

hydronic heating applications.

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