Danfoss BW10 020-090, Инструкции по установке, эксплуатации и обслуживанию

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1 - INTRODUCTION
Prior to the initial start-up of the BW10 unit, the people
involved in the on-site installation, start-up, operation and
maintenance of this unit should be thoroughly familiar with
these instructions and the specific project data for the
installation site.
The BW10 liquid units are designed to provide a very high level
of safety during installation, start-up, operation and
maintenance. They will provide safe and reliable service when
operated within their application range.
This manual provides the necessary information to fami-liarize
yourself with the control system before performing start-up
procedures. The procedures in this manual are arranged in the
sequence required for machine installation, start-up, operation
and maintenance.
Be sure you understand and follow the procedures and safety
precautions contained in the instructions supplied with the
machine, as well as those listed in this guide.
To find out, if these products comply with European directives
(machine safety, low voltage, electromagnetic compatibility,
equipment under pressure etc.) check the declarations of
conformity for these products.
1.1 - Installation safety considerations
After the unit has been received, when it is ready to be installed
or reinstalled, and before it is started up, it must be inspected for
damage. Check that the refrigerant circuit(s) is (are) intact,
especially that no components or pipes have shifted (e.g.
following a shock). If in doubt, carry out a leak tightness check
and verify with the manufacturer that the circuit integrity has
not been impaired. If damage is detected upon receipt,
immediately file a claim with the shipping company.
Do not remove the skid or the packaging until the unit is in
its final position. These units can be moved with a fork lift
truck, as long as the forks are positioned in the right place
and direction on the unit.
The units can also be lifted with slings, using only the
designated lifting points marked on the unit.
These units are not designed to be lifted from above. Use
slings with the correct capacity, and always follow the lifting
instructions on the certified drawings supplied with the unit.
Safety is only guaranteed, if these instructions are carefully
followed. If this is not the case, there is a risk of material
deterioration and injuries to personnel.
DO NOT COVER ANY PROTECTION DEVICES.
This applies to fuse plugs and safety valves (if used) in the
refrigerant or heat transfer medium circuits. Check if the
original protection plugs are still present at the valve outlets.
These plugs are generally made of plastic and should not be
used. If they are still present, please remove them. Install
devices at the valve outlets or drain piping that prevent the
penetration of foreign bodies (dust, building debris, etc.) and
atmospheric agents (water can form rust or ice). These
devices, as well as the drain piping, must not impair operation
and not lead to a pressure drop that is higher than 10% of the
control pressure.
Classification and control
In accordance with the Pressure Equipment Directive and
national usage monitoring regulations in the European
Union the protection devices for these machines are classified
as follows:
Safety
accessory* Damage limitation accessory**
in case of an external fire
Refrigerant side
High-pressure switch x
External relief valve*** x
Rupture disk x
Fuse plug x
Heat transfer fluid side
External relief valve**** x x
* Classified for protection in normal service situations.
** Classified for protection in abnormal service situations.
*** The instantaneous over-pressure limited to 10% of the operating pressure does
not apply to this abnormal service situation. The control pressure can be higher
than the service pressure. In this case either the design temperature or the high-
pressure switch ensures that the service pressure is not exceeded in normal service
situations.
**** The classification of these safety valves must be made by the personnel that
completes the whole hydronic installation.
Do not remove these valves and fuses, even if the fire risk is
under control for a particular installation. There is no
guarantee that the accessories are re-installed if the instal-
lation is changed or for transport with a gas charge.
All factory-installed safety valves are lead-sealed to prevent
any calibration change. If the safety valves are installed on a
reversing valve (change-over), this is equipped with a safety
valve on each of the two outlets. Only one of the two safety
valves is in operation, the other one is isolated. Never leave the
reversing valve in the intermediate position, i.e. with both ways
open (locate the control element in the stop position). If a
safety stop is removed for checking or replacement please
ensure that there is always an active safety stop on each of the
reversing valves installed in the unit.
The external safety valves must always be connected to drain
pipes for units installed in a closed room. Refer to the
installation regulations, for example those of European
standard EN 378 and EN 13136.
These pipes must be installed in a way that ensures that
people and property are not exposed to refrigerant leaks. As
the fluids can be diffused in the air, ensure that the outlet is
far away from any building air intake, or that they are
discharged in a quantity that is appropriate for a suitably
absorbing environment.