Eco Heating Systems CB 105 HW, Installation, Service And User Manual

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E93.1803.901 HW 10
Safety valve
DO NOT apply a closing valve or any other form of narrowing between the water heater and the safety valve,
because this might disturb the correct functioning of the safety valve.
The right safety valve has been supplied with the CB xxx HW water heater.
Water heater Safety valves Part number
HW 85-125 27112 Prescor B ¾ - 10 bar - 150 kW E04.015.090
HW 155 29007 Prescor B 1 - 10 bar - 250 kW E04.015.091
The HW water heater and tank should be installed by a skilled installer according to all applicable standards and
regulations for tap water installations. Use the next scheme as guideline. When multiple water heaters and tanks
are applied, every combination has to be equipped with its own safety valve.
Hot water could be released when the safety valve is opened. This can result in severe
personal injury. Before operating the safety valve manually, check that it will discharge in a
safe place. If water does not flow freely from the end of the discharge pipe, turn the gas
supply and power OFF and call a qualified person to determine the cause. Refer to the
safety valve manufacturer's instructions for inspection and maintenance requirements.
A) Potable water inlet
B) Hot water supply (circulation if appli-
cable)
C) Circulation return
1) Pressure regulating valve (manda-
tory in case service water pressure is
too high)
2) Inlet combination with valve (manda-
tory)
3) Apply filter if necessary (recom-
mended)
4) A suitable safety valve must be
mounted near the water heater
(mandatory) This safety valve may
never be isolated from the water
heater by means of a closing valve
5) Remote tank sensor (necessary)
6) Drain valve (recommended)
7) Hot and cold-water mixers
8) Strap-on temperature sensor
If the installation is constructed in such a way that underpressure (Pabs<1 bar;
Patm<0 bar) can occur in the tank, an aerator must be installed between the inlet
combination and the tank, without any valve".
SAFETY COMPONENTS
The picture shows an example of a functional installation. The safety components as shown in
the picture are NOT necessarily conform all applicable standards and regulations.
ALWAYS have the system installed by a skilled installer. Safety components must be added
according to all applicable standards and regulations.
WARNING
PUMP
NON- RETURN VALVE
VALVE
SAFETY VALVE
AUTOMATIC VENT
FILTER
INLET COMBINATION
- Overflow
- Non return valve
- Valve
PRESSURE REGULATING
VALVE
WARNING
NOTICE