3
`
All appliance pipe fittings are made via 22mm compression fittings, threaded 3/4”BSP male parallel.
`
A servicing valve must be incorporated into the cold water supply
`
The expansion vessel must be connected between the check valve and the appliance.
`
It is recommended that the outlet point of the drain pipework be at least 1 metre below the level of the base of the
appliance (this can be achieved by attaching a hose to the drain tap outlet spigot).
`
Safety discharge connections (including the tundish) must to conform to G3 building regulations.
3. Installation - Water
12
4
6
7
5
8
9
10
3
2
1
11
8
2
9
9
2
Figure 4: Typical installation - schematic (not to scale)
Item
Description
1
Cold Water Mains in
2
Service Valve (not supplied)
3
Pressure Reducing Valve (PRV)
4
Balanced Cold Water Draw Off
5
Check Valve
6
Expansion Vessel
7
Expansion (Pressure) Relief Valve
8
Tundish
9
To Drain (Waste)
10
Hot out
11
Water heater
12
Temperature and Pressure Relief Valve
Table 2: Typical installation table
WARNING
`
Under no circumstances should the
factory fitted Temperature/Pressure
Relief Valve be removed.
`
The cold water controls supplied MUST
be fitted to the mains water supply to
the appliance.
`
The discharge pipe should not be
blocked or used for any other purpose.
`
The tundish should not be located
adjacent to electrical components.
4. Commissioning & Controls
4.1 Commissioning procedure
`
Ensure water supply is turned on - allow tank to fill.
`
Switch on electrical supply to the water heater. You
will notice that the display and all options will light
up for a few seconds.
`
After a few seconds the display will go into its
default "S" smart setting. The "°C" graphic will blink
indicating water heating cycle is active.
`
In this default mode the temperature of the water is
automatically selected but will adjust based on the
usage patterns learnt.
4.2 User Interface
WARNING
DO NOT apply electicial power to the water
heater until the unit has been filled with
water.
S
Figure 5: User interface
Item
Description
1
Mode selection and programming
2
Selected mode
3
Temp up/level up
4
Temp down/level down
5
2 digit display
6
Program periods
7
Validation and Boost
Table 3: User interface
