Introduction; Check Equipment Received; Installation Safety Considerations - Carrier AquaSnap 61AF 022 Installation, Operation And Maintenance Instructions

1 - INTRODUCTION

Prior to the initial start-up of the 61AF units, the people involved
should be thoroughly familiar with these instructions and the
specific project data for the installation site.
The 61AF heat pumps are designed to provide a very high level
of safety and reliability making installation, start-up, operation and
maintenance easier and more secure. They will provide safe and
reliable service when operated within their application range.
They are designed for an operating life of 15 years by assuming a
75% utilisation factor; that is approximately 100,000 operating hours.
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, such as: protective
clothing such as gloves, safety glasses, safety shoes and
appropriate tools, and suitable qualifications (electrical, air
conditioning, local legislation).
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 - Check equipment received

■ Inspect the unit for damage or missing parts. If damage is
detected, or if shipment is incomplete, immediately file a claim
with the shipping company.
■ Confirm that the unit received is the one ordered. Compare the
name plate data with the order.
■ The name plate is attached to the unit in two locations:
- on the outside on one of the unit sides
- on the control box door on the inside
■ This shows the following information:
- Model number - size
- CE marking
- Serial number
- Year of manufacture and pressure and leak tightness test
date
- Refrigerant used
- Refrigerant charge per circuit
- PS: Min./max. allowable pressure (high and low pressure
side)
- TS: Min./max. allowable temperature (high and low pressure
side)
- Pressure switch cut-out pressure
- Unit leak test pressure
- Voltage, frequency, number of phases
- Maximum current drawn
- Maximum power input
- Unit net weight
■ Confirm that all accessories ordered for on-site installation have
been supplied, are complete and undamaged.
The unit must be checked periodically, if necessary removing
the insulation (thermal, acoustic), during its whole operating
life to ensure that no shocks (handling accessories, tools,
etc.) have damaged it. If necessary, the damaged parts must
be repaired or replaced. See also chapter "Maintenance".

1.2 - 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 circuits are intact, especially
that no components or pipes have shifted or been damaged (e.g
.following a shock). If in doubt, carry out a leak tightness check.
If damage is detected upon receipt, immediately file a claim with
the shipping company.
This machine must be installed in a location that is not accessible
to the public and protected against access by non-authorised
people.
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 (labels on the
chassis and a label with all unit handling instructions are
attached to the unit tank - refer to chapter 2.4).
Use slings with the correct capacity, and always follow the
lifting instructions on the certified drawings supplied for 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.
These units are not designed to be lifted from above.
DO NOT COVER ANY PROTECTION DEVICES.
This applies to fuse plugs and relief valve (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.
Ensure that the valves are correctly installed, before operating
the unit.
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:
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 6.5m of the unit
(3) The instantaneous over-pressure limitation 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.
(4) The classification of these relief valve must be made by the personnel that
completes the whole hydraulic 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
installation is changed or for transport with a gas charge.
When the unit is subjected to fire, safety devices prevent
rupture due to over-pressure by releasing the refrigerant. The
fluid may then be decomposed into toxic residues when
subjected to the flame:
- Stay away from the unit.
- Set up warnings and recommendations for personnel in
charge to stop the fire.
- Fire extinguishers appropriate to the system and the
refrigerant type must be easily accessible.
All factory-installed relief valve are lead-sealed to prevent any
calibration change.
Over pressure
Safety protection
accessory in case of an external
(1)
fire (2)
x
x
x
x
(4) (4)