Installation Manual

6
4.5 Installation under Pavers (Stone or Brick)
1. Ensure that there is a solid base of 4” to 8” (102mm to 203mm) of crushed rock
aggregate base and that it is tamped down and ready to receive the mortar pour.
2. It is extremely important that the paver installer does NOT use any heavy
equipment, machinery, or vehicles over the exposed Heating Cable. During
the paver installation process, it is recommended that care be taken to avoid
stepping on the hot-cold factory splice portion of cable (green meets black).
It is the responsibility of the electrician to use a 500 VDC megohmmeter and
a multi-meter to continuously check on the Heating Cables that are currently
being worked on top of, to ensure they have not been damaged, and will be
ready for action once the mortar pour has cured.
3. For installations in stairs and ramps that will include hand rails, it is strongly
recommended that the paver installer pre-sleeve for the posts to avoid any and
all drilling of the mortar. The Heating Cable must be routed around these sleeves
or posts to avoid any direct contact with them. It is the responsibility of the
electrician and the paver installer to coordinate their eorts so they avoid saw-
cutting or drilling thru Heating Cables that are no longer visible beneath the
mortar.
4. The paver installer or electrician should place wire mesh (like would be used
in concrete) down on top of the crushed rock aggregate. The mesh should be
staked down rmly to the crushed rock so it remains at. Next, the Heating Cable
or Mats should be attached to the mesh using wire ties to maintain proper depth
and spacing, 3” (76mm) for free-form type Cable. Reference the WarmlyYours
custom installation plan provided with quotation so that this process goes
smoothly.
5. At this time, the electrician must route the cold lead(s) thru rigid metal conduit(s)
or other approved means, to get back to an accessible weatherproof junction
box(es). Care must be taken by the electrician so that none of the heated section
(green) enters any conduit. For this type of application, we recommend using
an aerial mounted snow sensor to avoid having to cut around a circular slab
mounted sensor (this could cause a trip hazard or premature paver crumble).
Once the conduit(s) is in place, the product is ready to receive the mortar pour
or sand, or limestone screenings.
6. Care must be taken by the paver installer so the mortar covers the Heating Cables
/ Mats and they will not make direct contact with the pavers. We recommend
that at least 1” (25mm) thick mortar is poured over the Heating Cables / Mats,
but no more than 1.5”(38mm). If using sand or limestone screenings, cover to an
uncompacted depth of 1.5” (38mm), leveled to grade.
7. The paver installer(s) must take care not to walk on the hot-cold factory splice
and to avoid damaging the Heating Cables with shovels or rakes. Mats should
be placed mesh facing up, keeping the wire-side-down, to help protect them
from shovels.
8. The electrician needs to complete nal testing of all the Heating Cables / Mats
with a multi-meter and a megohmmeter to verify and record that each Heating
Cable has survived the pour of mortar, and is ready for action once the mortar is
cured. These values must be recorded on the warranty card on page 35.
9. If sand or limestone screenings are used instead of mortar, avoid dropping
pavers onto the surface, as doing so may damage the heating cables.
WARNING
1. Brick and Stone Pavers must NOT be any thicker than 2.5” (63.5mm).
2. We do not recommend tire track coverage when using pavers