Installation; Water Connection - Stiebel Eltron SHP-A 220 Plus Utilisation Et Installation

iNSTAllATiON

installation
10. Installation
WARNING Injury
!
Incorrect installation can lead to serious injury or mate-
rial losses. Before any work, ensure sufficient clearances
for the installation.
Handle sharp-edged components carefully.

10.1 Water connection

Material losses
!
Carry out all water connection and installation work in
accordance with regulations.
Material losses
!
The corrosion protection provided by the anode can only
be guaranteed when the electrical conductivity of the do-
mestic hot water is within the limits stated in the chapter
"Specification / Data table".
Cold water line
Galvanised steel, stainless steel, copper and plastic are approved
materials. A safety valve is required.
DHW line
Stainless steel, copper and plastic pipework are approved.
Material losses
!
When using plastic pipework, observe the manufacturer's
data and the chapter "Specification / Fault conditions".
f Thoroughly flush the pipework before connecting the ap- f
pliance. Foreign bodies, such as welding pearls, rust, sand
or sealant can impair the operational reliability of the
appliance.
Material losses
!
To protect the connections against corrosion the water
connection must be made with flat gaskets. The use of
hemp on connections is not permissible.
The insulated screw fittings included in the standard
delivery serve to prevent and insulate against cathodic
scaling due to highly conductive water.
1
1 Union nut (G1)
2 Insulating sleeve
3 Flanged pipe (22x1 mm, Copper)
4 Gasket
www.stiebel-eltron.com
2 3 4
f Using the gaskets, insulating sleeves and union nuts provid- f
ed, connect the flanged pipes included in the standard deliv-
ery to the "Cold water inlet" and "DHW outlet" connections.
f Check the insulated screw fitting for tightness. f
Safety valve
The appliance is a sealed unvented DHW cylinder. Provide the
appliance with a pressure relief valve.
f Install a type-tested safety valve in the cold water supply f
line. The response pressure of the safety valve must be below
or equal to the permissible operating pressure of the DHW
cylinder.
The safety valve protects the appliance against unacceptable ex-
cess pressure. The diameter of the cold water supply line must be
no greater than the diameter of the safety valve.
f Ensure that the expansion water escaping from the safety f
valve can drip into a drain, e.g. a tank or funnel.
Ensure the drain cannot be shut off.
f Size the drain so that water can drain off unimpeded when f
the safety valve is fully opened.
f Ensure that the discharge pipe of the safety valve is open to f
atmosphere.
f Fit the discharge pipe of the safety valve with a constant f
downward slope and in a room free from the risk of frost.
Pressure reducing valve
The maximum pressure in the cold water supply line must be at
least 20 % below the response pressure of the safety valve. If the
maximum pressure in the cold water supply line is higher, install
a pressure reducing valve.
Drain valve
f Install a suitable drain valve at the lowest point in the cold f
water inlet line.
DHW circulation
The heat losses incurred in the DHW circulation line and the elec-
trical power consumption of the circulation pump reduce the effi-
ciency of the system. The cooled water in the DHW circulation line
mixes with the cylinder content. Where possible, avoid installing
a DHW circulation line. Where that is not possible, the DHW cir-
culation pump must be controlled thermally or by time switch.
Thermal insulation
f Insulate the DHW line and valves against heat loss and to im- f
prove energy efficiency in accordance with locally applicable
regulations.
f Insulate the cold water supply line to prevent condensate f
forming.
SHP-A 220-300 Plus | 17