Introduction; Specific Aspects For 30Rqsy Units With Variable Available Pressure; Check Equipment Received; Installation Safety Considerations - Carrier Aquasnap 30RQS Series Installation, Operation And Maintenance Instructions

1 - INTRODUCTION

Prior to the initial start-up of the 30RQS/30RQSY units, the
people involved should be thoroughly familiar with these
instructions and the specific project data for the installation site.
The 30RQS/30RQSY 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 - Specific aspects for 30RQSY units with variable
available pressure
30RQSY units are designed for indoor installation in a plant
room. For this type of installation cold or hot air leaving the
air-cooled air heat exchangers is discharged by the fans to
the outside of the building, using a duct system.
The suction air return can be outside or inside the room (see
chapter 3.2 - "Duct connection").
The installation of a duct system at the air heat exchanger
discharge line and in certain cases at the heat exchanger air
suction side causes a pressure drop due to the resistance
caused by the air flow.
Therefore more powerful fan motors than those used for the
30RQS units are installed in the units of this range. For each
installation of a unit installed inside a plant room the duct
pressure drops differ, depending on the duct length, duct
section and direction changes.
30RQSY units equipped with fans with available pressure
are designed to operate with air discharge ducts with maximum
pressure drops of 160 Pa.
To compensate for these pressure drops 30RQSY units are
equipped with variable-speed fans with a maximum speed of
19 r/s to ensure an optimised air flow rate.
In the cooling mode, the full-load or part-load speed is
controlled by a patented algorithm that permanently
optimises the condensing temperature to ensure the best unit
energy efficiency (EER) whatever the operating conditions
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and pressure drops of the system ductwork.
In the heating mode, the full-load or part-load speed of each
circuit is fixed and at the configured maximum (range
configurable from 12 r/s to 19 r/s) based on the constraints
and characteristics of the installation site. The maximum
configured speed applies to both the heating and cooling
mode.
If required and for reasons that may apply at the installation
site of the 30RQSY units a maximum fan speed can be set.
To do this consult the 30RB/RQ Touch Pilot Junior control
manual.

1.2 - 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.
• The unit name plate must include 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 options ordered for on-site installation
have been delivered, and 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".

1.3 - Installation safety considerations

After the unit has been received, 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.