Ariston IHUB 4 - Manual (Page 5)

General remarks
The manufacturer cannot be responsible for the damages caused by improper
installation or by failure to follow instructions in this pamphlet. Comply with the
installation instructions before completing electric connection.
The thermostat has been pre-set at the factory between 41°C (105° F) and 45° C (113° F).
Hydrogen gas can be produced in a hot water system served by this heater that has
not been used for a long period of time (generally 2 weeks or more). Hydrogen gas is
extremely flammable. To reduce the risk of injury under these conditions, it is
recommended that the hot water faucet be opened for several minutes at the kitchen
sink before using any electrical appliance connected to the hot water system. If
hydrogen gas is present, there will probably be an unusual sound such as air escaping
through the pipe as the water begins to flow. There should be no smoking or open
flame near the faucet at this time.
CAUTION
CAUTION
CAUTION
Installation instructions
Fasten the supplied mounting bracket to the wall. Use screws that are suitable for the
wall material and the weight of the heater. Hang the water heater on the bracket. Tug
down wards on the heater to ensure that both “fingers” of the bracket are seated in the
mounting slots. Confirm water piping orientation before wall mounting.
Heater can sit on floor. Confirm water piping orientation before locating on floor location.
The GL6+ needs to be wired with 12 GA. wire to a minimum 20 amp/ maximum 20 amp
branch circuit. (Remove cover plate V (fig. 3/4) using a thin screw-driver operating on point
W (fig. 3/4). Unscrew the screw below and lift the cover C (fig. 3/4). When reassembling work
in the opposite way being careful to insert first the tongue of the cover into the slot.) Insert
12 AWG through conduit at rear of heater. Secure internal wire connector below thermostat
(fig. 3/3) and connect wiring to right side of thermostat control. (+) to lower terminal marked
“L”, neutral to upper terminal marked “N”. Unit must be grounded T (fig. 3/3).
When the GL6+ is not within sight of the electrical circuit breakers, a circuit breaker lockout
or additional local means of disconnection for all non grounded conductors must be provided
that is within sight of the appliance. [REF NEC 422.31]
Connect the cold water inlet pipe to the inlet nipple (marked with a blue ring) and the hot
water outlet pipe to the outlet nipple (marked with a red ring).
The model GL 6+ can be piped horizontally from the side or vertically from the top. If you
wish to install the unit horizontally, with the piping connections on the right side, you will have
to be certain the tap between the two water tappings is plugged, the supplied Temperature
and Pressure Relief Valve will need to be installed on top.
If you wish to install the unit vertically, with the piping connections on top, you will have to be
certain the tap on the side is plugged, the supplied Temperature and Pressure Relief Valve
will need to be installed on top.
Wall
mounting
(only for vertical
installation)
MODEL GL 6+
Wiring
and
Grounding
instructions
Pipe
connections
Floor
Mounting
The GL 6+ water heater can be installed under the sink.
Fasten the supplied mounting bracket to the wall. Use screws that are suitable for the
wall material and the weight of the heater. Hang the water heater on the bracket. Tug
down wards on the heater to ensure that both “fingers” of the bracket are seated in the
mounting slots. Wall
mounting
MODEL GL 2.5 - GL 4
The GL 2.5 and GL 4 water heaters can be installed under the sink.
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