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1 - INTRODUCTION
Prior to the initial start-up of the 30RQM/30RQP units, everyone
involved in the works should be thoroughly familiar with these
instructions and with the characteristics of the installation site,
and ensure these are respected.
30RQM/30RQP heat pumps are designed to provide a very high
level of safety and reliability, making installation, start-up,
operation and maintenance easier and safer.
They will provide safe and reliable service if used within their
application ranges.
They are designed to offer a service life of 15 years, assuming a
utilisation factor of 75%, which corresponds to approximately
100,000 operating hours.
The procedures in this manual are arranged in the sequence required
for installation, start-up, operation and maintenance of the units.
Ensure that you follow all the required safety precautions, including
those listed in this guide, such as: wearing personal protective
equipment (gloves, safety glasses, safety shoes), having the
appropriate tools, skills and qualifications (electrical, air conditioning,
local legislation).
To find out whether these products comply with European
directives (machine safety, low voltage, electromagnetic
compatibility, pressure equipment, etc.) check the declarations
of conformity for these products.
1.1 - Specific features of 30RQP units
The 30RQP units differ from the 30RQM units by introducing
variable speed drives on all of the fans and optimising the overall
energy efficiency of the unit depending on the operating
conditions (air temperature, circuit capacity). This improves the
seasonal efficiency (SCOP and ESEER).
All fans in the same refrigerant circuit are controlled by a single
variable speed drive. Therefore, they operate together at the
same rotational speed. The rotational speed of each circuit is
controlled by an algorithm that continuously optimises the
condensing temperature in cooling mode or the evaporating
temperature in heating mode. This ensures optimal energy
efficiency of the units (EER and COP) whatever the operating
conditions.
1.2 - Installation safety considerations
After the unit has been received, and before it is started up, it
must be visually inspected for damage. Check that the refrigerant
circuits are intact, taking care to check that no components or
pipes have shifted or been damaged (following an impact, for
example). If in doubt, carry out a leak tightness check. If damage
is detected upon receipt, file a claim with the shipping company
immediately.
Do not remove the skid or the packaging until the unit is in its
final position.
These units can be safely moved with a fork lift truck, as long
as the forks are positioned in the location and direction shown
on the unit.
The units can also be lifted with slings, using only the designated
lifting points marked on the unit (labels on the chassis and
label with the unit handling instructions, attached to the unit).
Use slings with the correct capacity, and follow the lifting
instructions given on the certified drawings for the unit.
4
Safety can only be guaranteed if these instructions are carefully
followed. Failure to do so may result in damage to the equipment
and physical injury.
DO NOT OBSTRUCT THE PROTECTIVE DEVICES.
This applies to any valves fitted on the refrigerant or heat transfer
fluid circuits. Check whether the original protection plugs are
still present at the valve outlets. These plugs are generally made
of plastic and must be removed before operation. If they are still
present, please remove them. Fit devices at the valve or drain
piping outlets to 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 must 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 protective devices fitted to these machines are classified as
follows:
Safety
accessory
Refrigerant side
High pressure switch
External relief valve
(3)
Rupture disk
Fuse plug
Heat transfer fluid side
External relief valve
(1) Classified for protection in normal service situations.
(2) Classified for protection in abnormal service situations. These accessories are sized for fires
with a thermal flow of 10kW/m². No combustible matter should be placed within 6.5 m of the unit.
(3) The instantaneous over-pressure limitation of 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.
(4) The selection of these relief valves must be made by the personnel responsible for
completing the hydraulic installation.
Do not remove these valves under any circumstances, even if the
fire risk is under control for a particular system. There is no
guarantee that the accessories have been re-installed if the system
is changed or for transport with a gas charge. When the unit is
subjected to fire, a safety device prevents rupture due to over-
pressure by releasing the refrigerant. The fluid can then break
down into toxic residues when in contact with flames:
•
Stay away from the unit;
•
Ensure the personnel in charge of extinguishing the fire are
duly warned and issued with recommendations;
•
Fire extinguishers appropriate to the system and the
refrigerant type must be easily accessible.
All factory-installed relief valves are lead-sealed to prevent
any calibration change.
The external relief valves must always be piped to a safe, external
location if the units are installed in a enclosed space. Refer to
the installation regulations, for example those of European
standard EN 378 and EN 13136. Discharge ductwork must be
installed in a way that ensures that people and property are
not exposed to vented refrigerant. As the fluids can be diffused
in the air, ensure that refrigerant is discharged away from
building air intakes or that it is discharged into a sufficient
quantity of suitable absorbent material. Relief valves must be
checked periodically (See the paragraph on "Maintenance safety
considerations").
If the relief valves are installed on a change-over valve, this is
equipped with a relief valve on each of the two outlets.
Only one of the two relief valves is in operation, the other one is
isolated. Never leave the change-over valve in the intermediate
position, i.e. with both ways open (Bring the actuator in abutment,
Accessory for limitation of damage
in the event of an external fire
(1)
X
X
X
X
(4)
(4)
(2)
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