H2O Manual | 9
5. Installation
4.3 Identification
The H2O is shown in Figure 2. Each H2O is
uniquely identified by its MAC address. This is
printed inside the top cover and is also visible
as the Wifi hotspot name when the device is in
hotspot mode.
5.1 Safety and isolation
As the H2O is installed into a building’s electrical
infrastructure and also has both AC and DC
power supplies, it is necessary to ensure that
the installation area is secured and safe before
beginning the installation.
To install the H2O, follow these steps:
Begin by making sure that the AC supply is
fully isolated, either at the main breaker, RCD
or dedicated isolation device. Then ensure that
the DC PV supply is also fully isolated. Ensure
that supplies are also locked out to prevent
accidental reconnection, as necessary.
5.2 Installation of the H2O
Note that the H2O will generate some heat and
it is necessary to take that into consideration
when choosing your installation location.
To begin your H2O installation, locate a suitable
position for it which fulfills all the following
criteria:
»
A firm, even vertical surface
»
A location that is fully indoors
»
Free from excessive dust and moisture
»
Has free airflow and at least 300mm
clearance all around
»
Is not subjected to heat generated by
another device (eg: above a cooker or
directly adjacent to the geyser)
»
It may not be mounted inside a cupboard or
other place without free airflow.
»
Is within reach of the 10m temperature
probe’s maximum length.
»
Not directly below the Geyser where it may
be splashed by any geyser leak event or in the
case of maintenance work.
The H2O may not be mounted horizontally or
at an oblique angle. It must be mounted with
the terminal chamber at the bottom of the front
cover (ie: correctly rotated)
The H2O may not be installed within the ceiling
or roof cavity.
Mount the supplied bracket with suitable fixings
to the identified surface and, having done so,
ensure that it is firm and secure.
Attach the H2O to its bracket by positioning it
over the hooks and sliding it downwards. There
should be a small gap between the bracket and
the rear surface of the H2O’s housing to allow
for sufficient airflow.
5.3 Electrical installation
Depending on whether this is a new or existing
geyser installation, follower either the steps
labelled “
Existing installations
” or “
New
installations” below.
Note that the H2O can be used off-grid, without
an AC supply. In this case, ignore instructions
relating to the AC supply below.
Note that, depending on where the H2O is
mounted, the following steps may differ.
