Installation Guide

8
Safety Ratings
The Mirror Defogger is UL listed under standard 499. The main
electrical line feeding the Mirror Defogger must incorporate a
GFCI for North America. For the le number, please contact
WarmlyYours.
9
Installing Mirror (cont.)
CAUTION:
Electric heated mirror may crack under the following
conditions:
1. If there is no gap between the
mirror and hard substances. If
there is tile or marble around the
perimeter of the heated mirror, the
mirror may crack during heating
because there is not enough room
to allow for the expansion of the
mirror. A 2mm gap around the
perimeter of the mirror is required to
allow for this expansion.
2. If a mirror is held in place by
a nail or other rigid mounting
materials, ensure that there is room
for expansion around the other 3
edges. The mirror may crack if
trapped between the mounts and
other hard objects.
3. The following are 3 examples of
mirror cutting that may cause the
mirror to crack
a. a rectangular hole for a switch,
outlet, or other appliance.
b. a hole exceeding a diameter of 2”
(50mm). Common for plumbing.
c. inner angles cut into the mirror.
Marble or ceramic tile
Marble or ceramic tile
Hard substance
Mirror with a hole that
exceeds 50mm in diameter
Mirror has
inner angle
Rectangular
hole
Mirror has
outer angle
Fogless mirror
Fogless mirror