REMKO Safety assembly - Manual (Page 8)

3 Description of the
safety assembly
Diaphragm safety valve
NOTICE!
In order to avoid damage, the installation, com-
missioning and maintenance of the diaphragm
safety valves must always be implemented as
stipulated in the installation instructions.
The diaphragm safety valves were manufactured
in accordance with the safety requirements of the
pressure equipment directive 97/23/EC and are
TÜV-certified (with enlarged outlet, type-tested per
TRD 721 VdTÜV bulletin for safety valve SV100).
Safety assembly
The manifold is made from solid cast brass
CB753S. The small air bubbles in heating water
are automatically routed to the fast-bleeder, thanks
to the special design.
The lower connection, for the heat pump connec-
tion line, has a 1" internal thread.
A pre-formed polystyrene shell per DIN 4102-A1
provides insulation.
The complete safety assembly comprises:
1. A heating manometer 1/4", ø 63 mm, with
green flag and red position indicator and
metal housing. The automatic shut-off valve
3/8" x 1/4" enables trouble-free replacement
without having to empty the system.
2. An automatic fast-bleeder with a shut-off
valve, brass design, a float made from high
quality plastic and functionally reliable valve.
Connection = 3/8" with an O-ring seal.
3. A diaphragm safety valve 1/2" x 3/4", type-
tested, in compact brass design and a trigger
pressure of 3 bar for power ratings up to 50
kW or 45 000 kcal/h.
The safety assembly can only be used for closed
heating systems per EN 12828 for power ratings
up to 50 KW.
4 Installation
WARNING!
Water temperatures or water mix temperatures
over 50 °C can result in burns.
Ensure that these high temperatures do not
present any hazard to personnel during the
installation of the safety valve.
CAUTION!
Do not damage the connection threads during
installation. This will prevent damage to prop-
erty and injury to personnel.
CAUTION!
All connections must be leak-tight.
The fittings and equipment (manometer, quick-
bleeder and safety valve) are sealed into the mani-
fold and checked for functionality and leak-tight-
ness. Install the safety valve per EN 12828, above
the level and in the immediate vicinity of the heat
generator.
Route the connecting line (min. 3/4" DN = 20 mm)
with standard permissible materials keeping the
route as short as possible. No shut-off valve may
be installed.
Install the safety assembly such that the fittings are
all vertical.
The diameter of the discharge line for the safety
valve must comply with the diameter of the valve
outlet.
The max. length must not exceed 2m, more than 2
bends is not permitted. If these max. values are
exceeded (2 bends and 2 m line), then the next
largest dimension should be selected for the dis-
charge line. Note that in this case, more than 3
bends and 4 m line length is also not permitted.
If the discharge line is routed in a drain line with a
funnel, the dimension of this drain line must have
twice the cross-section of the valve inlet. Further-
more, ensure that the discharge line is routed with
an incline. The mouth must be open and must be
observable and designed such that personnel are
not endangered by the discharge procedure
REMKO Safety assembly
8