9
Illustration
Check
6. Drill holes for the remaining four screws.
7. Hang the unit again by the first screw, and then
insert and tighten the remaining four screws.
8. Take waterproofing measures so that water does
not enter the building from screws mounting the
device.
• Make sure the unit is installed securely so that it will
not fall or move due to vibrations or earthquakes.
• The weight of the device will be applied to the wall. If the strength of the wall is not suffi-
cient, reinforcement must be done to prevent the transfer of vibration.
• Do not drop or apply unnecessary force to the device when installing. Internal parts may
be damaged and may become highly dangerous.
• Install the unit on a vertical wall and ensure that it is level.
Locating Screw Holes
Mounting
Structure
• When installing with bare hands, take caution to
not inflict injury.
• Be careful not to hit electrical wiring, gas, or water
piping while drilling holes.
Item
CAUTION
Be sure to do
Installations at Elevations
Above 610m (2,000').
• If this water heater is being installed at an elevation of 610m
(2,000') or higher, disconnect the connector labeled "High
Elevation Disconnect" as illustrated on the right. This con-
nector is located inside the unit.
HIGH ELEV
AT
ION
DISCONNECT
Mounting Bracket
(upper)
Location of Screw Hole
Locating Screw Holes
10 - 46mm
(0.4 - 1.8")
mounting bracket
(upper)
mounting bracket
(lower)
mark
(10mm (0.4") intervals)
Tapping Screw
• The distance between the unit and the wall can be ad-
justed within the range of 10 - 46mm (0.4 - 1.8").
Adjust the brackets as necessary to accommodate the
vent system (factory default is 10mm (0.4")).
1. Loosen the four screws in the mounting bracket (upper),
match the desired mark to the back of the unit, and then
tighten the screws.
2. Loosen the four screws in the mounting bracket (lower) and
secure it in the same position as the upper mounting bracket.
3. Drill a single screw hole, making sure to hit a stud.
4. Insert and tighten the screw and hang the unit by
the upper wall mounting bracket.
5. Determine the positions for the remaining four screws
(two for the top bracket and two for the bottom), and
remove the unit.
• Disconnect power to the water heater before disconnecting
this connector. Failure to perform this step will result in a
"73" code displayed on the remote controller and a cease in
operation. If this occurs, disconnect, then reconnect power
to the water heater to reset the system.
