Balanced Cold Water Supply; Drain Valve; Hot Water Outlet; Thermostatic Mixing Valve - Dimplex ECSd125-580 Installation And User Instructions Manual

Cold
Water
from
Mains
Expansion
Relief
Valve
Figure 5: Detail showing the connection of
the expansion vessel to the inlet group
5.1.4 Balanced
supply
If a balanced cold water supply is
required a connection can be taken
from the bottom of the inlet group.
5.1.5

Drain valve

It is also recommended to install a
drain valve (not supplied) in the lowest
point of the cold water feed to the
cylinder. This allows the cylinder to be
drained in a controlled manner should
this become necessary.

5.2 Hot Water Outlet

The hot water pipe work is to be
directly connected to the hot water
outlet connection on the cylinder, see
Figure 1.
Balanced
Cold Water
Supply
Expansion
Vessel
Connection
Cold
Water to
Cylinder
cold water
Installation
5.2.1 Thermostatic
valve
A thermostatic mixing valve may be
required to limit
temperature. In this case, the valve
should be installed
manufacturer's instructions, ensuring
none of the safety equipment has been
isolated, (i.e.
connection to the thermostatic mixing
valve is taken
equipment of the inlet group).
5.2.2

Pipe insulation

It is recommended to insulate the hot
water pipe work from the cylinder to
the outlets, to reduce the energy
requirements for providing hot water.
It is also recommended to insulate all
other exposed pipework, such as the
T&P to the tundish, the coil flow and
return and the cold water inlet pipes.
5.3 Discharge pipes from
safety devices
5.3.1

Discharge pipe D1

- The temperature and pressure relief
valve must be discharged directly or
by way of a manifold via a short
length of metal pipe (D1) into a
tundish; and the discharge pipe must
be installed in
downward direction and in a frost
free environment. Water may drip
from the discharge pipe of the
pressure relief device and this pipe
must be left open to the atmosphere.
- The diameter of discharge pipe (D1)
should not be less than the nominal
outlet size of the safety device, e.g.
temperature relief valve.
- Where a manifold is used it should be
sized to accept and discharge the
mixing
the outlet
following the
make sure the
after the safety
a continuously