Rinnai EX08DT Installation And Operation Manual page 24

4.4.5 Connect the Gas
WARNING
When connecting the gas valve or other gas
components in the gas line, use a backup
wrench to ensure the connection is gas tight.
 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 furnace 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).
 After completion of gas pipe connections
all joints including the furnace 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.)
 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 section "3.2 Specifications."
 Refer to an approved pipe sizing chart if in
doubt about the size of the gas line.
24
4.4.6 Adjust the Gas
Pressure Settings
Complete these instructions for altitude and
vent length.
 Default altitude: 0 - 2,000 ft. (0 - 610 m)
 Default vent length:
 EX11DT: 0 - 7 ft. (0 - 2 m) + 1 Elbow
 EX08DT: 0 ft. (0 m)
 For altitudes greater than 2,000 ft. (610 m)
or installations with vent lengths longer
than 7 ft. (2 m), refer to Table 8: Gas
Pressure on the next page.
For high altitude installations in Canada, the
conversion shall be carried out by a
manufacturer's authorized representative, in
accordance with the requirements of the
manufacturer, provincial or territorial authorities
having jurisdiction and in accordance with the
requirements of CAN/CGA-B149.1 or CAN/
CGA-B149 installation codes.
CAUTION

Do not touch any other areas on the PC
board besides the "SW" switches while
power is supplied to the furnace. Parts
of the PC board are supplied with 120
volts AC.

Do not insert hands or objects into the
circulation fans while they are running.
Injury or mechanical malfunction may
occur.

Do not touch the areas at or near the
exhaust. This area becomes very hot
and could cause burns.
IMPORTANT
The regulator has been factory pre-set. If
the pressure is incorrect, contact Rinnai
technical support.
EX08DT and EX11DT Installation and Operation Manual