Hot Water Outlet; Thermostatic Mixing Valve; Pipe Insulation; Discharge Pipes From Safety Devices - Dimplex Ec-eau Installation And User Instructions Manual

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.
5.2.1

Thermostatic mixing valve

A thermostatic mixing valve may be
required to limit
temperature. In this case, the valve
should be installed
manufacturers instructions, ensuring
none of the safety equipment has
been isolated, (i.e. make sure the
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 a continuously
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
atmosphere.
the outlet
following the
after the safety
open to the
Installation
- 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 total discharge from all the D1
discharge pipes connected to it.
- The discharge pipe work from the
expansion relief
installed constantly falling to an
open point of
recommended to combine it with
the discharge of the temperature
and pressure relief valve.
5.3.2

Discharge pipe D2

For a detailed description of
discharge pipework D2 see chapter
4.4.1.
valve must be
discharge. It is
the