INSTALLATION
This electric unvented storage water heater includes the basic
installation elements which are found in the packaging, i.e.:
- Insulating bushing for pipes.
- Safety valve.
Installation and first operation of the storage heater and the
fittings have to be done by an expert which can take the
responsibility for properly done work and explains the handling
procedures.
For the connection the specific technical conditions of the
energy supplier as well as the valid standards and safety
regulations have to be considered.
WALL MOUNTING PROCEDURE
Hot water6
Use 4 adequately resistant and sturdy screws and rawl-
plugs capable of holding the weight of the filled heater.1Safetyvalve2Min. 20 mm air inlet
Cold water
50 cm3
LOCATION45
The installation procedure is greatly facilitated by the possibility
to locate the unit horizontally (EWH-comfort/N and
EWH-classic/N) or vertically in a frost-free (!) place anywhere
the house.
It would be a good idea to place the unit as close as possible50 cm
to the outlet - short piping means little loss of temperature.
Hot water 6
A minimum space of 50 cm below the outlet pipe is necessary
for servicing.
6
As shown in the drawing the input and output pipes must be
on the left side when the heater is installed horizontally.
Should the unit be close to a wall leave the recommended
21
minimum-space for maintenance and service.Safety valve
Do not install the heater with its wall mounts against the floorCold water
nor on a horizontal plane.Min. 20 mm air inlet345
HYDRAULIC INSTALLATION
1.Safety valve
The heater must be connected to the water supply mains.2.Turning knob for cleaning and draining
3.Draining pipe for the safety valve
a) The safety valve - supplied with the heater- MUST be
4.Stop valve
installed on the cold water input (see right side)
5.Reducing valve - necessary when pressure is more than 5 bar-
- Before connecting the safety valve with the heaterto be installed after the Ometer�, the
6.Earthed plastic sleeves (supplied with the heater)
connecting pipe must be rinsed carefully.
- The draining pipe and the safety valve must be left open
to the air and be installed in a continuous downward slope.ELECTRIC INSTALLATION
Water expands when heated. The units of the series classic,All storage water heaters of the EWH-series are of 220/230 V
basis and comfort are supplied with a safety valve that letssingle phase design. Before connecting make sure that the
mains supply and unit input features coincide.
the expanding water flow back into the cold-water feed.
The heaters installation procedure is totally straightforward
The units of the series classic/N and comfort/N have a safety
and only requires that Low Voltage Electronic Regulations are
valve that prevents the expanding water (N=non return)
met. Although well known by the installers we would like to
from flowing back into the cold-water feed. Here a suitable
point out some of the basics:
siphon for the absorption of the expanding water is to install.
OThe following volumes and provisions shall be taken into
The drain of the safety valve must not be blocked.account for installations in bathrooms or toilets�.
To open the safety valve (not safety valve basis) to let thePROHIBITED VOLUME.- It is the volume limited by the
water flow from the heater - via the outlet - turn the knobtangential and vertical planes with respect to the outer edges
clockwise or counterclockwise as you please.of bathtub, toilet pan or shower enclosure and by a plane
situated 2,25 m above the same or the floor, should the units
The proper operating of the safety valve should be tested
be embedded in the same.
periodically that way:
- turn the knob clockwise or counterclockwise up to the top
position
- the water should flow out of the passage
- turn the knob to its down position
The pressure rating is indicated on the knob.
b) If the water-supply pressure exceeds 5 bar, a type-approved
reducing valve must be installed.Safety valveSafety valve basisSafety valve |
ACEC
