A.O. Smith CEWH-A1 Series Installation Instructions Manual page 9

Use the hex wrench and expansion bolts to mount and fix the hangers on the wall. See Figure IV for
details:
Cautions:
* The nylon expansion tube must be put through the hole of the hanger first, before inserted
into the drilled hole.
* Must use the special hex wrench to drive the bolt into the nylon expansion tube. Don't
permit to use other tools. Once the bolt head pressing the hanger plate and making the
hanger unmovable by itself, stop further tightening to prevent damaging the nylon tube.
Hang up the water heater by placing the 2 square holes of mounting bracket into the hanger hooks on
the wall. Move the water heater downward to ensure that the square holes are fastened to the root of the
hanger hooks and confirm water heater is fixed steadily. See Figure V for details.
CEWH-A1 Cylinder Electric Wall-Hung Water Heater CEWH-A1 Cylinder Electric Wall-Hung Water Heater
L
Figure III
ø10
Wall
Figure IV
Model
CEWH-40A1
CEWH-50A1
CEWH-60A1
CEWH-80A1
CEWH-100A1
90mm
Figure V
L （mm）
260
380
260
380
380
Square Hole
5
CEWH-A1