User Guide

10 • On-Demand Rack System
MAINTENANCE / SPECIFICATIONS
MAINTENANCE
WARNING
Read and follow all instructions,
cautions, and warnings in the water
heaters’ Installation Manual and
Owner’s Guide.
Failure to do so can
lead to loss of life, personal injury,
and/or property damage.
Replacing a Water
Heater
1. Turn OFF the power supply, the gas
supply, and the water supply.
2. Disconnect the power cable. If you
have an outdoor model, verify that
the electrical connections are not
powered by checking them with a
non-contact circuit tester.
ᴏ
Indoor Model:
Simply unplug the power cord
from the outlet.
ᴏ
Outdoor Model:
Disconnect the power cable
at the bo om of the water
heater. See the water heater’s
Installation Manual and
Owner’s Guide for details.
3. Disconnect the gas, cold water, and
hot water connections.
4. Remove the bolts as described
below. The locations are shown by
the arrows in Figure 6. If you have a
wall mounted rack, see
Figure 8.
During this step, hold and support
the water heater so that it does
not fall.
ᴏ
Free Standing Rack:
Remove the six bolts that secure
the water heater.
ᴏ
Wall Mounted Rack:
Rotate each T-bolt 90-degrees to
release the water heater from
the rail. Look at the indicator
at the end of each T-bolt to
determine its orienta on. The
indicator should be parallel with
the T-channel. See Figure 7.
5. Lift the water heater from the rack.
6. Secure the new water heater to the
rails. If the heater is being mounted
on a wall mounted rack, refer to
Figure 8.
7. Connect the water, gas, and
electrical connections as outlined
in the water heater’s Installation
Free standing rack
systems:
• Each heater secured
by six bolts.
• Four are located as
shown at right.
dǁŽĂĚĚŝƟŽŶĂůďŽůƚƐ
are located top center
ĂŶĚďŽƩŽŵĐĞŶƚĞƌ
Wall mounted
rack systems:
Each heater
secured by
four T-bolts.
Figure 6: Location of nuts to be loosened / tightened. (Applies to each heater.)
Figure 7: T-bolt indicator (wall mounted racks only).
Grooved indicator runs parallel
with the bolt head.
• Removal: Indicator must be
parallel with T-Channel.
• /ŶƐƚĂůůĂƟŽŶ: To secure water
heater, indicator must be
perpendicular to T-Channel.
T-Channel
(Side of Rail)
B.) Hold heater up to
rail and slide
T-Bolts into
T-Channel.
C.) Rotate a T-Bolt 90° to
lock it into place.
Tighten Nut. (Torque:
25 Nm +/- 5%.)
D.) Repeat at the three
remaining corners of
the water heater.
Flange
A.) Place T-Bolt through corner hole in
ŇĂŶŐĞĂƐƐŚŽǁŶďĞůŽǁƚŚĞŶƐƚĂƌƚŶƵƚ
on opposite side. Repeat at all four
corners of heater.
Nut
Nut
T-Bolt
Figure 8: Securing the water heater to a wall mounted rack with T-bolts. Reverse the process to
remove a water heater.