Carrier 30RQ/30RQY 039-160, 30RB/30RQ 017-160, 30RQS, 30RQSY, 30QBS/RQSY heat pump Installation, operation and maintenance instructions
Below you will find brief information for heat pump 30RQ/30RQY 039-160, heat pump 30RB/30RQ 017-160, heat pump 30RQS, heat pump 30RQSY. The 30RQS/30RQSY heat pumps are designed to provide a very high level of safety and reliability. They can be used in a wide range of applications and offer excellent energy efficiency.
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30RQ/30RQY 039-160
Reversible Air-to-Water Heat
Pumps
Nominal cooling capacity 40-150 kW
Nominal heating capacity 40-160 kW
50 Hz
30RQY
30RQ
For the operation of the control please refer to the
Pro-Dialog+ Control manual for the 30RB/30RQ 017-160 series
Installation, operation and maintenance instructions
Contents
2
17 - speCIfIC DetaIls foR UnIts WIth a fan WIth avaIlaBle statIC pRessURe (30RQsY) ......... 40
the cover photograph is for illustrative purposes only and is not part of any offer for sale or contract.
3
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.
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.
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 017-160 Pro-Dialog+ 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.
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 and pressure drops of the system ductwork.
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.
4
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).
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.
Use slings with the correct capacity, and always follow the lifting instructions on the certified drawings supplied for the unit.
Safety valves must be checked periodically. See paragraph
“Repair safety considerations”.
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.
If the safety valves are installed on a reversing valve
(changeover), 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 valve is removed for checking or replacement please ensure that there is always an active safety valve on each of the reversing valves installed in the unit.
Provide a drain in the discharge circuit, close to each safety valve, to avoid an accumulation of condensate or rain water.
All precautions concerning handling of refrigerant must be observed in accordance with local regulations.
Accumulation of refrigerant in an enclosed space can displace oxygen and cause asphyxiation or explosions.
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*
x x x
Damage limitation accessory** in case of an external fire
Refrigerant side
High-pressure switch
External relief valve***
Rupture disk
Fuse plug
Heat transfer fluid side
External relief valve**** x 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.
Inhalation of high concentrations of vapour is harmful and may cause heart irregularities, unconsciousness, or death.
Vapour is heavier than air and reduces the amount of oxygen available for breathing. These products cause eye and skin irritation. Decomposition products can be hazardous.
1.4 - Equipment and components under pressure
These products incorporate equipment or components under pressure, manufactured by Carrier or other manufacturers.
We recommend that you consult your appropriate national trade association or the owner of the equipment or components under pressure (declaration, re-qualification, retesting, etc.). The characteristics of this equipment/these components are given on the nameplate or in the required documentation, supplied with the products.
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.
Do not introduce high static and dynamic pressure compared with the existing operating pressures - either service or test pressures - in the refrigerant circuit or in the heat transfer circuit, especially:
• limiting the elevation of the condensers or evaporators
• taking the circulating pumps into consideration.
All factory-installed safety valves are lead-sealed to prevent any calibration change.
The external safety valves must always be connected to drain pipes for units installed in a closed room (30RQSY).
Refer to the installation regulations, for example those of
European standard EN 378 and EN 13136.
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1.5 - Maintenance safety considerations
Engineers working on the electric or refrigeration components must be authorized, trained and fully qualified to do so
(e.g. electricians trained and qualified in accordance with
IEC 60364 Classification BA4).
All refrigerant circuit work must be carried out by a trained person, fully qualified to work on these units. He must have been trained and be familiar with the equipment and the installation. All welding operations must be carried out by qualified specialists.
If any work is carried out in the fan area, specifically if the grilles or casings have to be removed, cut the power supply to the fans to prevent their operation.
OpErATINg ChECKs:
• ImpOrTANT INfOrmATION rEgArDINg
ThE rEfrIgErANT usED:
This product contains fluorinated greenhouse gas covered by the Kyoto protocol.
refrigerant type: r-410A global Warming potential (gWp): 1975
Periodic inspections for refrigerant leaks may be required depending on European or local legislation.
Please contact your local dealer for more information.
• During the life-time of the system, inspection and tests must be carried out in accordance with national regulations.
Aquasnap units use high-pressure R-410A refrigerant (the unit operating pressure is above 40 bar, the pressure at 35°C air temperature is 50% higher than for R-22). Special equipment must be used when working on the refrigerant circuit (pressure gauge, charge transfer, etc.).
Any manipulation (opening or closing) of a shut-off valve must be carried out by a qualified and authorised engineer, observing applicable standards (e.g. during draining operations). The unit must be switched off while this is done.
NOTE: The unit must never be left shut down with the liquid line valve closed, as liquid refrigerant can be trapped between this valve and the expansion device and lead to the risk of a pressure increase. This valve is situated on the liquid line before the filter drier box.
During any handling, maintenance and service operations the engineers working on the unit must be equipped with safety gloves, glasses, shoes and protective clothing.
Never work on a unit that is still energized. Never work on any of the electrical components, until the general power supply to the unit has been cut.
If the machine operates in a corrosive environment, inspect the protection devices more frequently.
Regularly carry out leak tests and immediately repair any leaks.
Ensure regularly that the vibration levels remain acceptable and close to those at the initial unit start-up.
Before opening a refrigerant circuit, transfer the refrigerant to bottles specifically provided for this purpose and consult the pressure gauges.
Change the refrigerant after an equipment failure, following a procedure such as the one described in Nf E29-795 or carry out a refrigerant analysis in a specialist laboratory.
If any maintenance operations are carried out on the unit, lock the power supply circuit in the open position and secure the machine upstream with a padlock.
If the work is interrupted, always ensure that all circuits are still deenergized before resuming the work.
protection device checks:
• If no national regulations exist, check the protection devices on site in accordance with standard EN378: once a year for the high-pressure switches, every five years for external safety valves.
If the refrigerant circuit remains open for longer than a day after an intervention (such as a component replacement), the openings must be plugged and the circuit must be charged with nitrogen (inertia principle). The objective is to prevent penetration of atmospheric humidity and the resulting corrosion on the internal walls and on non-protected steel surfaces.
1.6 - Repair safety considerations
ATTENTION: Even if the unit has been switched off, the power circuit remains energized, unless the unit or circuit disconnect switch is open. Refer to the wiring diagram for further details. Attach appropriate safety labels.
All installation parts must be maintained by the personnel in charge to avoid deterioration and injury. Faults and leaks must be repaired immediately. The authorized technician must have the responsibility to repair the fault immediately.
After each unit repair check the operation of the protection devices and create a 100% parameter operation report.
Comply with the regulations and recommendations in unit and HVAC installation safety standards, such as: EN 378,
ISO 5149, etc.
It is recommended to install an indicating device to show if part of the refrigerant has leaked from the valve. The presence of oil at the outlet orifice is a useful indicator that refrigerant has leaked. Keep this orifice clean to ensure that any leaks are obvious. The calibration of a valve that has leaked is generally lower than its original calibration. The new calibration may affect the operating range. To avoid nuisance tripping or leaks, replace or re-calibrate the valve.
rIsK Of EXpLOsION
Never use air or a gas containing oxygen during leak tests to purge lines or to pressurise a machine. Pressurised air mixtures or gases containing oxygen can be the cause of an explosion. Oxygen reacts violently with oil and grease.
6
Only use dry nitrogen for leak tests, possibly with an appropriate tracer gas.
If the recommendations above are not observed, this can have serious or even fatal consequences and damage the installation.
ATTENTION: No part of the unit must be used as a walkway, rack or support. Periodically check and repair or if necessary replace any component or piping that shows signs of damage.
Never exceed the specified maximum operating pressures.
Verify the allowable maximum high- and low-side test pressures by checking the instructions in this manual and the pressures given on the unit name plate.
Do not unweld or flamecut the refrigerant lines or any refrigerant circuit component until all refrigerant (liquid and vapour) as well as the oil have been removed from the heat pump. Traces of vapour should be displaced with dry nitrogen. refrigerant in contact with an open flame can produce toxic gases.
Do not step on refrigerant lines. The lines can break under the weight and release refrigerant, causing personal injury.
Do not climb on a machine. Use a platform, or staging to work at higher levels.
Use mechanical lifting equipment (crane, hoist, winch, etc.) to lift or move heavy components. for lighter components, use lifting equipment when there is a risk of slipping or losing your balance.
Use only original replacement parts for any repair or component replacement. Consult the list of replacement parts that corresponds to the specification of the original equipment.
The necessary protection equipment must be available, and appropriate fire extinguishers for the system and the refrigerant type used must be within easy reach.
Do not siphon refrigerant.
Do not drain water circuits containing industrial brines, without informing the technical service department at the installation site or a competent body first.
Avoid spilling liquid refrigerant on skin or splashing it into the eyes. Use safety goggles and safety gloves. Wash any spills from the skin with soap and water. If liquid refrigerant enters the eyes, immediately and abundantly flush the eyes with water and consult a doctor.
Close the entering and leaving water shutoff valves and purge the unit hydronic circuit, before working on the components installed on the circuit (screen filter, pump, water flow switch, etc.).
Never apply an open flame (blowlamp) or overheated steam (high-pressure cleaner) to the refrigerant circuit.
Dangerous overpressure can result.
periodically inspect all valves, fittings and pipes of the refrigerant and hydronic circuits to ensure that they do not show any corrosion or any signs of leaks.
It is recommended to wear ear defenders, when working near the unit and the unit is in operation.
During refrigerant removal and storage operations follow applicable regulations. These regulations, permitting conditioning and recovery of halogenated hydrocarbons under optimum quality conditions for the products and optimum safety conditions for people, property and the environment are described in standard Nf E29-795.
Always ensure you are using the correct refrigerant type before recharging the unit.
refer to the certified dimensional drawings for the units.
Charging any refrigerant other than the original charge type
(r-410A) will impair machine operation and can even lead to a destruction of the compressors. The compressors operate with r-410A and are charged with a synthetic polyol-ester oil.
It is dangerous and illegal to re-use disposable (non-returnable) cylinders or attempt to refill them. When cylinders are empty, evacuate the remaining gas pressure, and move them to a designated place for recovery. Do not incinerate.
Before any intervention on the refrigerant circuit, the complete refrigerant charge must be recovered.
Do not attempt to remove refrigerant circuit components or fittings, while the machine is under pressure or while it is running. Be sure pressure is at 0 kPa and that the unit has been shut-down and de-energised before removing components or opening a circuit.
Do not attempt to repair or recondition any safety devices when corrosion or build-up of foreign material (rust, dirt, scale, etc.) is found within the valve body or mechanism.
If necessary, replace the device. Do not install safety valves in series or backwards.
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2 - MOvING aND SITING THE UNIT
2.1 - Moving
See chapter 1.3 - “Installation safety considerations”.
2.2 - Siting the unit
The machine must be installed in a place that is not accessible to the public or protected against access by non-authorised persons.
2.3 - Checks before system start-up
Before the start-up of the refrigeration system, the complete installation, including the refrigeration system must be verified against the installation drawings, dimensional drawings, system piping and instrumentation diagrams and the wiring diagrams.
For these checks national regulations must be followed. If the national regulation does not specify any details, refer to standard EN 378-2 as follows:
In case of extra-high units the machine environment must permit easy access for maintenance operations.
Always refer to the chapter “Dimensions and clearances” to confirm that there is adequate space for all connections and service operations. for the centre of gravity coordinates, the position of the unit mounting holes, and the weight distribution points, refer to the certified dimensional drawing supplied with the unit.
Typical applications of these units do not require earthquake resistance. Earthquake resistance has not been verified.
CAuTION: Only use slings at the designated lifting points which are marked on the unit.
Before siting the unit check that:
•
•
•
•
•
•
• the permitted loading at the site is adequate or that appropriate strenghtening measures have been taken.
if the unit has to operate as a heat pump in temperatures below 0°C it must be raised at least 300 mm from the ground. This is necessary to avoid ice build-up on the unit chassis and also to permit correct unit operation in locations where the snow level may reach this height. the unit is installed level on an even surface (maximum tolerance is 5 mm in both axes).
there is adequate space above the unit for air flow and to ensure access to the components (see dimensional drawings).
the number of support points is adequate and that they are in the right places.
the location is not subject to flooding.
for outdoor installations, where heavy snowfall is likely and long periods of sub-zero temperatures are normal, provision has to be made to prevent snow accumulating by raising the unit above the height of drifts normally experienced. Baffles may be necessary to deflect strong winds. They must not restrict air flow into the unit.
CAuTION: Before lifting the unit, check that all casing panels are securely fixed in place. Lift and set down the unit with great care. Tilting and jarring can damage the unit and impair unit operation.
External visual installation checks:
• Compare the complete installation with the refrigeration system and power circuit diagrams.
• Check that all components comply with the design specifications.
• Check that all protection documents and equipment provided by the manufacturer (dimensional drawings,
P&ID, declarations etc.) to comply with the regulations are present.
• Verify that the environmental safety and protection and devices and arrangements provided by the manufacturer to comply with the regulations are in place.
• Verify that all documents for pressure containers, certificates, name plates, files, instruction manuals provided by the manufacturer to comply with the regulations are present.
• Verify the free passage of access and safety routes.
• Verify the instructions and directives to prevent the deliberate removal of refrigerant gases.
• Verify the installation of connections.
• Verify the supports and fixing elements (materials, routing and connection).
• Verify the quality of welds and other joints.
• Check the protection against mechanical damage.
• Check the protection against heat.
• Check the protection of moving parts.
• Verify the accessibility for maintenance or repair and to check the piping.
• Verify the status of the valves.
• Verify the quality of the thermal insulation and of the vapour barriers.
• Ensure that the ventilation in the machine room is sufficient.
• Check the refrigerant detectors.
3 - INSTallaTION SpECIfICS fOR 30RQSY UNITS
3.1 - General
Each fan is controlled by a variable-speed controller.
Therefore each circuit operates independently and must have a separate duct system to avoid any air recycling between the air heat exchangers of the different refrigerant circuits.
If 30RQS/RQSY units are hoisted with rigging, it is advisable to protect coils against crushing while a unit is being moved.
Use struts or a lifting beam to spread the slings above the unit. Do not tilt a unit more than 15°.
WArNINg: Never push or lever on any of the enclosure panels of the unit. Only the base of the unit frame is
designed to withstand such stresses.
On the 30RQSY units each fan includes a factory-mounted connection frame interface for the connection to the duct network of the specific refrigerant circuit to which the fan belongs.
For the precise dimensions of this connection interface please refer to the dimensional drawings for the units.
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3.2 - Duct connection
30RQSY units can be installed inside a building and connected to a air distribution duct network:
- Air heat exchanger side, at the fresh air suction side for 30RQSY 039 to 078 units
- Fan discharge side at the evacuation side of the treated air by the unit heat exchanger (30RQSY 039 to 160).
For the precise dimensions of this connection interface please refer to the dimensional drawings for the units.
Specific connection precautions for sizes 30RQSY 050 to 078
Air inlet
Air inlet
Air inlet
Location of the air temperature sensor
Air inlet minimum
3.2.1 - standard unit suction connection
30RQSY 039 to 078 units are supplied with a sleeve that allows connection of an air heat exchanger suction duct.
Provide a removable window on the suction duct to allow the maintenance of the sensor (see figure above).
For units 30RQSY 050 to 078 the air heat exchanger is on two unit sides. It is therefore necessary to install two additional brackets to allow connection of the heat exchanger suction duct.
These parts are inside the machine and fixed to the riser
(as shown on the diagram below) with plastic collars.
All dimensions are in mm.
3.2.2 - fan discharge connection
A square flange is supplied mounted on the unit. An available standard round flange can easily be installed at the fan discharge, if the installer prefers the use of a round connection duct.
The unit is supplied with a grille on the discharge side. This grille has to be removed before connection to the duct system.
It is advisable to make the connection to the duct system with a flexible sleeve. If this recommendation is not observed, a lot of vibration and noise may be transmitted to the building structure.
9
Accessory filters
NOTE: The discharge lines must be ducted separately.
Fan motor access hatches (provide a 700 x 700 mm hatch) for each single and dual duct
Connection bellows or sleeve
ImpOrTANT: The connection of the ducts to the units must not lead to a mechanical constraint on the decks supporting the fans. use bellows or flexible sleeves to connect the ducts.
The fan protection grilles can be removed to increase the available pressure.
3.5 - applicable rules for units incorporated into an air duct network
Ensure that the suction or discharge inlets are not accidentally obstructed by the panel positioning (e.g. low return or open doors etc.).
3.6 - Installation of the accessory condensate collection pan
Ref.: 30RY 900 032 EE – (30RQSY 039 to 078)
It may be necessary to remove water. Carrier can supply an accessory condensate collection pan for installation under the unit. The connection of this pan to the condensate collection network can be made using a 1" gas threaded pipe.
At the beginning of each duct provide an access hatch with minimum dimensions of 700 x 700 mm to allow motor replacement or removal of the fan scroll.
3.3 - Electrical protection of the fan motors
Each motor is controlled by its own variable-speed controller.
Electrical protection is ensured by the variable-speed controller (in case of a locked rotor or overload).
If a fan des not operate, the variable-speed controller will automatically detect this and an alert will be sent to the
Pro-Dialog display. For the specific alarms list of this option, please refer to the 30RB/RQ 017-160 Pro-Dialog+ control manual.
3.4 - air heat exchanger suction filter kit (option 23b)
This option is available for units 30RQSY 039 to 078. The suction duct connection is made directly to the factorymounted sleeve on the unit. Maintenance access to the filters is achieved by removing the four metric screws on the side of the sleeve.
The cover panel with a manoeuvring lever can now be removed. The filters are placed on a metal sheet that allows them to slide in their support.
legend
Condensate collection pan
Connection
2
1
10
4 - DIMENSIONS, ClEaRaNCES
4.1 - 30RQS 039 and 045-078, units with and without hydronic module
For units with fans with variable available pressure (30RQSY) please refer to the pages that follow.
legend:
All dimensions are given in mm
Control box
Water inlet
Water outlet
Required clearances for air flow
Recommended clearances for maintenance
Air outlet, do not obstruct
Power cable entry
NOTES:
A Non-certified drawings.
Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation.
For the location of fixing points, weight distribution and coordinates of the centre of gravity refer to the certified dimensional drawings.
B In multiple-unit installations (maximum four units), the side clearance between the units should be increased from 1000 to 2000 mm.
C The height of the solid surface must not exceed 2 m.
11
4.2 - 30RQS 080-160, units with and without hydronic module
For units with fans with variable available pressure (30RQSY) please refer to the pages that follow.
legend:
All dimensions are given in mm
Control box
Water inlet
Water outlet
Required clearances for air flow
Recommended clearances for maintenance
Air outlet, do not obstruct
Power cable entry
Multiple unit installation
Solid wall
NOTES:
A Non-certified drawings.
Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation.
For the location of fixing points, weight distribution and coordinates of the centre of gravity refer to the certified dimensional drawings.
B In multiple-unit installations (maximum four units), the side clearance between the units should be increased from 1000 to 2000 mm.
C The height of the solid surface must not exceed 2 m.
Solid wall
NOTE: If the walls are higher than 2 m, contact the factory
12
4.3 - 30RQSY 039-045, units with and without hydronic module, without filter frame
*
*
legend:
All dimensions are given in mm
Control box
Water inlet
Water outlet
Required clearances for air flow
Recommended clearances for maintenance
Air outlet, do not obstruct
Power cable entry
NOTES:
A Non-certified drawings.
Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation. For the location of fixing points, weight distribution and coordinates of the centre of gravity refer to the certified dimensional drawings.
B Provide a gutter around the unit to collect the condensate water or install the accessory condensate collection pan (30RQSY 039 to 078).
C The unit must be installed level (less than 2 mm per metre deviation in both axes).
D Units 30RQSY 039 to 078 are equipped with a sleeve on the air heat exchanger side to allow connection of a suction air frame.
* Overall dimensions
13
4.4 - 30RQSY 039-045, option 23B, units with and without hydronic module, with filter frame
* *
legend:
All dimensions are given in mm
Control box
Water inlet
Water outlet
Required clearances for air flow
Recommended clearances for maintenance
Air outlet, do not obstruct
Power cable entry
14
NOTES:
A Non-certified drawings.
Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation. For the location of fixing points, weight distribution and coordinates of the centre of gravity refer to the certified dimensional drawings.
B Provide a gutter around the unit to collect the condensate water or install the accessory condensate collection pan (30RQSY 039 to 078).
C The unit must be installed level (less than 2 mm per metre deviation in both axes).
D Units 30RQSY 039 to 078 are equipped with a sleeve on the air heat exchanger side to allow connection of a suction air frame.
* Overall dimensions
4.5 - 30RQSY 050-078, units with and without hydronic module, without filter frame
* *
legend:
All dimensions are given in mm
Control box
Water inlet
Water outlet
Required clearances for air flow
Recommended clearances for maintenance
Air outlet, do not obstruct
Power cable entry
NOTES:
A Non-certified drawings.
Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation. For the location of fixing points, weight distribution and coordinates of the centre of gravity refer to the certified dimensional drawings.
B Provide a gutter around the unit to collect the condensate water or install the accessory condensate collection pan (30RQSY 039 to 078).
C The unit must be installed level (less than 2 mm per metre deviation in both axes).
D Units 30RQSY 039 to 078 are equipped with a sleeve on the air heat exchanger side to allow connection of a suction air frame.
* Overall dimensions
15
4.6 - 30RQSY 050-078 option 23B, units with and without hydronic module, with filter frame
* *
legend:
All dimensions are given in mm
Control box
Water inlet
Water outlet
Required clearances for air flow
Recommended clearances for maintenance
Air outlet, do not obstruct
Power cable entry
NOTES:
A Non-certified drawings.
Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation. For the location of fixing points, weight distribution and coordinates of the centre of gravity refer to the certified dimensional drawings.
B Provide a gutter around the unit to collect the condensate water or install the accessory condensate collection pan (30RQSY 039 to 080).
C The unit must be installed level (less than 2 mm per metre deviation in both axes).
D Units 30RQSY 039 to 078 are equipped with a sleeve on the air heat exchanger side to allow connection of a suction air frame.
* Overall dimensions
16
4.7 - 30RQSY 080-120 units with and without hydronic module
*
*
legend:
All dimensions are given in mm
Control box
Water inlet
Water outlet
Required clearances for air flow
Recommended clearances for maintenance
Air outlet, do not obstruct
Power cable entry
NOTES:
A Non-certified drawings.
Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation. For the location of fixing points, weight distribution and coordinates of the centre of gravity refer to the certified dimensional drawings.
B The unit must be installed level (less than 2 mm per metre deviation in both axes).
* Overall dimensions
17
4.8 - 30RQSY 140-160 units with and without hydronic module
*
*
legend:
All dimensions are given in mm
Control box
Water inlet
Water outlet
Required clearances for air flow
Recommended clearances for maintenance
Air outlet, do not obstruct
Power cable entry
NOTES:
A Non-certified drawings.
Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation. For the location of fixing points, weight distribution and coordinates of the centre of gravity refer to the certified dimensional drawings.
B The unit must be installed level (less than 2 mm per metre deviation in both axes).
* Overall dimensions
18
4.9 - 30QBS/RQSY 039-080 units with desuperheater
Position of the desuperheater inlets and outlets
4.10 - 30RQS/RQSY 090-120 units with desuperheater
Position of the desuperheater inlets and outlets
4.11 - 30RQS/RQSY 140-160 units with desuperheater
Position of the desuperheater inlets and outlets
Unit water inlet and outlet
Water inlet and outlet, unit with option 49
19
5 - pHYSICal DaTa, 30RQS UNITS
For units with fans with variable available pressure (30RQSY 039-160) please refer to chapter 7.
30RQS
Operating weight*
Standard unit without hydronic module
Standard unit + optional hydronic module
Single high-pressure pump
Dual high-pressure pump
Sound levels
Sound power level 10
-12
W**
Sound pressure level at 10 m***
Compressors
Circuit A
Circuit B
No. of capacity steps
Refrigerant charge*
Circuit A
Circuit B
Oil charge
Circuit a
Circuit B
Capacity control type
Minimum capacity
air heat exchangers fans
Quantity
Total air flow
Speed
Water heat exchanger
Water volume
Without hydronic module
Max. water-side operating pressure
With hydronic module (option)
Single or dual pump (as selected)
Expansion tank volume
Expansion tank pressure****
Max. water-side operating pressure
Water connections (with and without hydronic module)
Connections
Outside tube diameter
Chassis paint colour
l l l kg kg kg
039
506
535
561 dB(A) 80 dB(A) 49 kg kg
% l/s r/s kPa
-
Hermetic scroll compressor 48.3 r/s
2
2
R-410A
12.5
-
2
2
81
49
-
81
49
2
2
-
86
55
2
2
-
2
2
87
55
-
87
55
2
2
-
13.5
-
16.5
-
17.5
-
18.0
-
POE SZ 160 (EMKARATE RL 32-3 MAF)
-
5.8
-
7.2
Pro-Dialog+
50
-
7.2
-
7.2
-
7.0
-
-
16.5
7.0
50 50 50 50
Grooved copper tubes, aluminium fins
50
Axial Flying Bird VI fans with rotating shroud
1
-
-
-
84
52
2
2
21.5
7.0
50
-
-
-
84
52
3
3
27.5
7.2
33
-
-
-
84
52
3
3
28.5
7.0
33
-
-
-
84
52
3
3
33.0
7.0
33
90
58
2
2
4
19.0
19.0
7.0
7.0
25
90
58
2
2
4
18.5
18.5
7.0
7.0
25
1 1 1 1 1 2 2 2 2 2 2
3800 3800 3800 5300 5300 5300 7600 7600 7600 7600 10600 10600
12 12 12 16 16
Direct-expansion plate heat exchanger
2.6
3.0
4.0
4.8
4.8
16
5.6
12
8.7
12
8.7
12
9.9
12
11.3
16
12.4
16
14.7
1000
045
513
543
569
1000
050
539
569
594
1000
060
552
582
608
1000
070
553
582
608
1000
078
560
590
616
1000
080
748
778
804
1000
090
895
927
972
1000
100
903
935
980
1000
120
959
995
1043
1000
140
1060
1099
1136
1000
160
1078
1117
1127
1000 l bar kPa
Pump, Victaulic screen filter, safety valve, expansion tank, water + air purge valves, pressure sensors
12
1
400
Victaulic
12
1
400
12
1
400 inch 2 mm 60.3
2
60.3
2
60.3
Colour code RAL 7035
12
1
400
2
60.3
12
1
400
2
60.3
12
1
400
2
60.3
35
1
400
2
60.3
35
1.5
400
2
60.3
35
1.5
400
2
60.3
35
1.5
400
2
60.3
35
1.5
400
2
60.3
35
1.5
400
2
60.3
* Weight shown is a guideline only. To find out the unit refrigerant charge, please refer to the unit nameplate.
** In accordance with ISO 9614-1, for information only. The values have been rounded and are for information only and not contractually binding
*** For information, calculated from the sound power level Lw(A).
**** When delivered, the standard pre-inflation of the tank is not necessarily the optimal value for the system. To permit changing the water volume, change the inflation pressure to a pressure that is close to the static head of the system. Fill the system with water (purging the air) to a pressure value that is 10 to 20 kPa higher than the pressure in the tank.
6 - ElECTRICal DaTa, 30RQS UNITS
For units with fans with variable available pressure (30RQSY 039-160) please refer to chapter 8.
30RQS - standard unit (without hydronic module) power circuit
Nominal power supply
Voltage range
Control circuit supply
Maximum start-up current (Un)*
Standard unit
Unit with electronic starter option
Unit power factor at maximum capacity**
Maximum unit power input**
Nominal unit current draw***
Maximum unit current draw (Un)****
Maximum unit current draw (Un-10%)†
Customer-side unit power reserve
Short-circuit stability and protection
A
A
039 045 050 060
V-ph-Hz 400-3-50
V 360-440
24 V, via internal transformer
A
A kW
A kW
070 078 080 090 100 120 140 160
113.8 134.8 142.8 145.8 176.0 213.0 213.6 173.6 207.6 247.6 243.0 286.0
74.7
0.83
19.5
25.6
34.8
38.0
86.5
0.81
22.3
29.0
44.8
49.2
See table 8.2
93.8
0.81
24.5
33.0
46.8
51.4
96.2
0.83
27.9
36.0
52.8
58.4
114.4 139.8 139.8 -
0.81
31.2
42.4
67.0
74.8
0.78
35.8
52.8
73.0
79.6
Customer reserve at the 24 V control power circuit
0.78
35.6
53.4
73.6
80.2
0.83
42.3
55.4
80.6
89.0
-
0.81
45.6
61.7
-
0.79
52.5
77.3
-
0.81
62.4
84.8
-
0.78
71.6
105.6
98.6
107.6 134.0 146.0
110.3 117.5 149.6 159.2
* Maximum instantaneous start-up current at operating limit values (maximum operating current of the smallest compressor(s) + fan current + locked rotor current of the largest compressor).
** Power input, compressors and fans, at the unit operating limits (saturated suction temperature 10°C, saturated condensing temperature 65°C) and nominal voltage of
400 V (data given on the unit nameplate).
*** Standardised Eurovent conditions: water heat exchanger entering/leaving water temperature 12°C/7°C, outside air temperature 35°C.
**** Maximum unit operating current at maximum unit power input and 400 V (values given on the unit nameplate).
† Maximum unit operating current at maximum unit power input and 360 V.
20
7 - pHYSICal DaTa, 30RQSY UNITS
30RQSY
Operating weight*
Standard unit without hydronic module
Standard unit + optional hydronic module
Single high-pressure pump
Dual high-pressure pump
Sound levels
Sound power level 10
-12
W**
Sound pressure level at 10 m***
Compressors
Circuit A
Circuit B
No. of capacity steps
Refrigerant charge*
Circuit A
Circuit B
Oil charge
Circuit a
Circuit B
Capacity control type
Minimum capacity
air heat exchangers fans
Quantity
Total air flow
Speed
Water heat exchanger
Water volume
Without hydronic module
Max. water-side operating pressure
With hydronic module (option)
Single or dual pump (as selected)
Expansion tank volume
Expansion tank pressure****
Max. water-side operating pressure
Water connections (with and without hydronic module)
Connections
Outside tube diameter
Chassis paint colour
l l l l kg kg kg dB(A) dB(A) kg kg
% l/s r/s kPa bar kPa inch mm
039
521
551
577
045
528
558
584
050
559
588
614
060
573
602
628
070
573
603
629
-
2
87
56
Hermetic scroll compressor 48.3 r/s
2
-
2
2
88
56
-
88
56
2
2
-
90
58
2
2
90
59
R-410A
12.5
-
2
2
-
13.5
-
16.5
-
17.5
-
18.0
-
POE SZ 160 (EMKARATE RL 32-3 MAF)
-
7.0
-
5.8
-
7.2
Pro-Dialog+
50
-
7.2
-
7.2
50 50 50 50
Grooved copper tubes, aluminium fins
Axial Flying Bird VI fans with rotating shroud
1 1 1
3500 3500 3500
1 1
4600 4600
16 16 16 18 18
Direct-expansion plate heat exchanger
2.6
3.0
4.0
4.8
4.8
1000 1000 1000 1000 1000
-
-
078
580
610
636
90
59
-
2
2
16.5
7.0
50
5.6
1000
-
-
-
080
762
792
818
90
59
2
2
21.5
7.0
50
1000
-
-
-
090
930
961
1006
90
59
3
3
27.5
7.2
1 2 2
4600 7000 7000
18 16 16
8.7
33
8.7
1000
-
-
-
100
939
971
1016
91
59
3
3
28.5
7.0
33
2
7000
16
9.9
1000
-
-
-
120
994
1030
1078
91
59
3
3
33.0
7.0
33
2
7000
16
11.3
1000
140
1090
1129
1166
93
61
2
2
4
19.0
19.0
7.0
7.0
25
2
9200
18
12.4
1000
160
1107
1146
1183
93
61
2
2
4
18.5
18.5
7.0
7.0
25
2
9200
18
14.7
1000
Pump, Victaulic screen filter, safety valve, expansion tank, water + air purge valves, pressure sensors
12
1
400
Victaulic
12
1
400
12
1
400
2
60.3
2
60.3
2
60.3
Colour code RAL 7035
12
1
400
2
60.3
12
1
400
2
60.3
12
1
400
2
60.3
35
1
400
2
60.3
35
1.5
400
2
60.3
35
1.5
400
2
60.3
35
1.5
400
2
60.3
35
1.5
400
2
60.3
35
1.5
400
2
60.3
* Weight shown is a guideline only. To find out the unit refrigerant charge, please refer to the unit nameplate.
** In accordance with ISO 9614-1, for information only. The values have been rounded and are for information only and not contractually binding
*** For information, calculated from the sound power level Lw(A).
**** When delivered, the standard pre-inflation of the tank is not necessarily the optimal value for the system. To permit changing the water volume, change the inflation pressure to a pressure that is close to the static head of the system. Fill the system with water (purging the air) to a pressure value that is 10 to 20 kPa higher than the pressure in the tank.
8 - ElECTRICal DaTa, 30RQSY UNITS
30RQSY - standard unit (without hydronic module) power circuit
Nominal power supply
Voltage range
039 045 050 060
V-ph-Hz 400-3-50
V 360-440
24 V, via internal transformer
Control circuit supply
Maximum start-up current (Un)*
Standard unit
Unit with electronic starter option
Unit power factor at maximum capacity**
Maximum unit power input**
Nominal unit current draw***
Maximum unit current draw (Un)****
Maximum unit current draw (Un-10%)†
Customer-side unit power reserve
Short-circuit stability and protection
A
A kW
A
A
A kW
070 078 080 090 100 120 140 160
116.4 137.4 145.4 148.4 176.4 213.4 218.8 178.8 212.8 252.8 243.8 286.8
74.7
0.83
21.2
28.2
37.4
40.6
86.5
0.81
24.0
31.6
47.4
51.8
See table 8.2
93.8
0.81
26.2
35.6
49.4
54.0
96.2
0.83
29.6
38.6
55.4
61.0
114.4 143.3 148.8 -
0.81
31.8
42.8
67.4
75.2
0.83
36.4
53.2
73.4
80.0
Customer reserve at the 24 V control power circuit
0.83
39.0
58.6
78.8
85.4
0.83
45.7
60.6
85.8
94.2
-
0.81
49.0
66.9
-
0.79
55.9
82.5
-
0.81
63.6
85.6
-
0.78
72.8
106.4
103.8 112.8 134.8 146.8
115.5 122.7 150.4 160.0
* Maximum instantaneous start-up current at operating limit values (maximum operating current of the smallest compressor(s) + fan current + locked rotor current of the largest compressor).
** Power input, compressors and fans, at the unit operating limits (saturated suction temperature 10°C, saturated condensing temperature 65°C) and nominal voltage of
400 V (data given on the unit nameplate).
*** Standardised Eurovent conditions: water heat exchanger entering/leaving water temperature 12°C/7°C, outside air temperature 35°C.
**** Maximum unit operating current at maximum unit power input and 400 V (values given on the unit nameplate).
† Maximum unit operating current at maximum unit power input and 360 V.
21
9 - ElECTRICal DaTa, 30RQS aND 30RQSY UNITS
9.1 - Short-circuit stability current (TN system*) - standard unit (with main disconnect without fuse)
30RQS/RQSY value with unspecified upstream protection
Short-term current at 1 s - Icw - kA rms
Admissible peak current - Ipk - kA pk
Conditional short-circuit current Icc - kA rms
Schneider circuit breaker - Compact series
Reference number**
039
3.36
20
Max. value with upstream protection (circuit breaker)
40
29670
045
3.36
20
40
050
3.36
20
060
3.36
20
070
3.36
20
078
3.36
15
080
3.36
15
090
5.62
20
100
5.62
20
120
5.62
15
140
5.62
20
160
5.62
15
NS100H NS100H NS100H NS100H NS100H NS100H NS100H NS100H NS160H NS160H NS250H NS250H
29670
40 40 40 40
29670 29670 29670 29670
40 40 40
29670 29670 30670
40 30
30670 31671
30
31671
* Earthing system type
** If another current limitation protection system is used, its time-current and thermal constraint (I²t) trip characteristics must be at least equivalent to those of the recommended Schneider circuit breaker. Contact your nearest Carrier office.
The short-circuit stability current values above are in accordance with the TN system.
9.2 - Electrical data, hydronic module
The pumps that are factory-installed in these units have motors with efficiency class IE2. The additional electrical data required* is as follows:
Motors of single and dual low-pressure pumps (options 116f, 116g)
No.** Description***
1
2
1
1
3
4
Nominal efficiency at full load and nominal voltage
Nominal efficiency at 75% rated load and nominal voltage
Nominal efficiency at 50% rated load and nominal voltage
Efficiency level
Year of manufacture
Manufacturer's name and trademark, commercial registration number and place of manufacturer
Product's model number
%
%
%
5
6 Number of motor poles
7-1 Rated shaft power output at full load and nominal voltage (400 V) kW
7-2 Maximum power input (400 V)****
8 Rated input frequency
9-1 Rated voltage
9-2 Maximum current drawn (400 V)†
10 Rated speed
V
A kW
Hz rpm r/s
11 Product disassembly, recycling or disposal at end of life
30RQS/RQSY
039 045 050 060 070 078 080 090 100 120 140 160
79.5 79.5 79.5 79.5 79.5 79.5 79.5 79.5 82.3 82.3 81.9 81.9
78.2 78.2 78.2 78.2 78.2 79.5 78.2 78.2 81.8 81.8 81.8 81.8
74.5 74.5 74.5 74.5 74.5 74.5 74.5 74.5 79.7 79.7 79.1 79.1
IE2
This information varies depending on the manufacturer and model at the time of incorporation. Please refer to the motor name plates.
2
0.8
1.1
50
2
0.8
1.1
50
2
0.8
1.1
50
2
0.8
1.1
50
2
0.8
1.1
50
2
0.8
1.1
50
2
0.8
1.1
50
2
0.8
1.1
50
2 2
50
2
1.25 1.25 1.7
1.5
50
1.5
2.3
50
2
1.7
2.3
50
3 x 400
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
3.1
3.1
4.3
4.3
2838 2838 2838 2838 2838 2838 2838 2838 2892 2892 2863 2863
47 47 47 47 47 47 47 47 48 48 48 48
Disassembly using standard tools. Disposal and recycling using an appropriate company.
12 Operating conditions for which the motor is specifically designed
I - Altitudes above sea level
II - Ambient air temperature
IV - Maximum air temperature
V - Potentially explosive atmospheres m
°C
°C
< 1000††
< 55
Please refer to the operating conditions given in this manual or in the specific conditions in the Carrier selection programs.
Non-ATEX environment
* Required by regulation 640/2009 with regard to the application of directive 2005/32/EC on the eco-design requirements for electric motors
** Item number imposed by regulation 640/2009, annex I2b.
*** Description given by regulation 640/2009, annex I2b.
**** To obtain the maximum power input for a unit with hydronic module add the maximum unit power input from the electrical data table to the pump power input.
† To obtain the maximum unit operating current draw for a unit with hydronic module add the maximum unit current draw from the electrical data table to the pump current draw.
†† Above 1000 m, a degradation of 3% for each 500 m should be taken into consideration.
22
Motors of single and dual high-pressure pumps (options 116B, 116C, 116j and 116k)
No.** Description***
1
2
1
1
3
4
Nominal efficiency at full load and nominal voltage
Nominal efficiency at 75% rated load and nominal voltage
Nominal efficiency at 50% rated load and nominal voltage
Efficiency level
Year of manufacture
Manufacturer's name and trademark, commercial registration number and place of manufacturer
Product's model number
%
%
%
5
6 Number of motor poles
7-1 Rated shaft power output at full load and nominal voltage (400 V) kW
7-2 Maximum power input (400 V)****
8 Rated input frequency
9-1 Rated voltage
9-2 Maximum current drawn (400 V)†
10 Rated speed
V
A kW
Hz rpm r/s
11 Product disassembly, recycling or disposal at end of life
30RQS/RQSY
039 045 050 060 070 078 080 090 100 120 140 160
81.9 81.9 81.9 81.9 81.9 81.9 81.9 81.9 81.9 84.3 84.3 84.3
81.8 81.8 81.8 81.8 81.8 81.8 81.8 81.8 81.8 84 84 84
79.1 79.1 79.1 79.1 79.1 79.1 79.1 79.1 79.1 81.8 81.8 81.8
IE2
This information varies depending on the manufacturer and model at the time of incorporation. Please refer to the motor name plates.
2
1.7
2.3
50
2
1.7
2.3
50
2
1.7
2.3
50
2
1.7
2.3
50
2
1.7
2.3
50
2
1.7
2.3
50
2
1.7
2.3
50
2
1.7
2.3
50
2
1.7
2.3
50
2
2.2
3
50
2
2.2
3
50
3 x 400
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.3
5.8
5.8
2863 2863 2863 2863 2863 2863 2863 2863 2865 2865 2865
48 48 48 48 48 48 48 48 48 48 48
Disassembly using standard tools. Disposal and recycling using an appropriate company.
2
2.2
3
50
5.8
12 Operating conditions for which the motor is specifically designed
I - Altitudes above sea level
II - Ambient air temperature
IV - Maximum air temperature
V - Potentially explosive atmospheres m
°C
°C
< 1000††
< 55
Please refer to the operating conditions given in this manual or in the specific conditions in the Carrier selection programs.
Non-ATEX environment
* Required by regulation 640/2009 with regard to the application of directive 2005/32/EC on the eco-design requirements for electric motors
** Item number imposed by regulation 640/2009, annex I2b.
*** Description given by regulation 640/2009, annex I2b.
**** To obtain the maximum power input for a unit with hydronic module add the maximum unit power input from the electrical data table to the pump power input.
† To obtain the maximum unit operating current draw for a unit with hydronic module add the maximum unit current draw from the electrical data table to the pump current draw.
†† Above 1000 m, a degradation of 3% for each 500 m should be taken into consideration.
9.3 - Compressor usage and electrical data for standard units
Compressor
Zp90
Zp103
Zp120
Zp137
Zp154
Zp182
Total circuit a
Total circuit B
I Nom
11.4
13.1
15.1
16.6
18.7
23.9
I Max
(Un)
16
21
22
25
31
34
I Max
(Un-10%)
17.6
23.1
24.3
27.8
34.9
37.3
lRa* a
95
111
118
118
140
174
lRa** a
57
67
71
71
84
104
Cosine phi max.
0.82
0.84
0.84
0.86
0.85
0.84
A
B
A
B
A
B
A
B
A
B
A
B
Circuit 30RQS/30RQSY
039 045 050 060 070 078 080 090 100 120 140 160
-
-
-
-
-
-
-
-
-
-
-
-
2
2
-
-
-
-
-
-
-
-
-
-
2
-
-
2
-
-
-
-
-
-
-
-
-
-
-
-
2
2
I Nom Nominal current draw at Eurovent conditions (see definition of conditions under nominal unit current draw), A
I Max Maximum operating current at 360 V, A
*
**
Locked rotor current at nominal voltage, A
Locked rotor current at nominal voltage, electronic starter
-
-
-
-
-
-
-
-
-
-
-
-
2
2
-
-
-
-
-
-
-
-
-
-
-
-
2
2
-
-
-
-
-
-
-
-
-
-
-
-
2
2
-
-
-
-
-
-
-
-
-
-
-
-
2
2
-
-
-
-
-
-
-
-
-
-
-
-
3
3
-
-
-
-
-
-
-
-
-
-
-
-
3
3
-
-
-
-
-
-
-
-
-
-
-
-
3
3
-
-
2
2
2
2
-
-
-
-
-
-
-
-
2
2
-
-
2
2
-
-
-
-
-
-
-
-
23
Electrical data and operating conditions notes:
• 30RQS/RQSY 039-160 units have a single power connection point located immediately upstream of the main disconnect switch.
• The control box includes the following standard features:
- a main disconnect switch,
- starter and motor protection devices for each compressor, the fans and
- the pump, the control devices.
• field connections:
All connections to the system and the electrical installations must be in full accordance with all applicable local codes.
• The Carrier 30RQS/RQSY units are designed and built to ensure conformance with these codes. The recommendations of European standard EN 60204-1
(machine safety - electrical machine components - part 1: general regulations - corresponds to IEC 60204-1) are specifically taken into account, when designing the electrical equipment.
NOTES:
• Generally the recommendations of IEC 60364 are accepted as compliance with the requirements of the installation directives. Conformance with EN 60204-1 is the best means of ensuring compliance with the Machines Directive § 1.5.1.
• Annex B of EN 60204-1 describes the electrical characteristics used for the operation of the machines.
• The operating environment for the 30RQS/RQSY units is specified below:
1. Environment* - Environment as classified in EN 60721 (corresponds to IEC
60721):
- outdoor installation*
- ambient temperature range: -20°C to +48°C, class 4K4H
- altitude: ≤ 2000 m (see note for table 9.2 - Electrical data, hydronic module)
- presence of hard solids, class 4S2 (no significant dust present)
- presence of corrosive and polluting substances, class 4C2 (negligible)
2. Power supply frequency variation: ± 2 Hz.
3. The neutral (N) conductor must not be connected directly to the unit (if necessary use a transformer).
4. Overcurrent protection of the power supply conductors is not provided with the unit.
5. The factory-installed disconnect switch is of a type suitable for power interruption in accordance with EN 60947.
6. The units are designed for simplified connection on TN(s) networks (IEC 60364).
For IT networks provide a local earth and consult competent local organisations to complete the electrical installation. Units delivered with speed drive
(options 28 and 116J/K/V/W) are not compatible with IT network.
7. Derived currents: If protection by monitoring of derived currents is necessary to ensure the safety of the installation, the control of the cut-out value must take the presence of leak currents into consideration that result from the use of frequency converters in the unit. A value of at least 150 mA is recommended to control differential protection devices.
Caution: If particular aspects of an actual installation do not conform to the conditions described above, or if there are other conditions which should be considered, always contact your local Carrier representative.
* The required protection level for this class is IP43BW (according to reference document IEC 60529). All 30RQS/RQSY units are protected to IP44CW and fulfil this protection condition.
10 - applICaTION DaTa
10.1 - Operating range, standard units - cooling mode
Evaporator
Entering water temperature at start-up
Leaving water temperature during operation
Entering/leaving water temperature difference
Condenser
Entering air temperature 30RQS***
Entering air temperature 30RQSY***
Hydronic module****
Entering air temperature
Kit without pump
Kit with pump (option 116x)
Kit with pump (option 116x) and frost protection
°C
°C
K
Minimum
7.5*
5**
°C -20
°C 0
°C -20 option to -20°C (option 42)
Note: Do not exceed the maximum operating temperature.
-
-
-
Maximum
30
3 10
Minimum Maximum
°C -10
°C -20
20
48
48
* For entering water temperatures below 7.5°C at start-up, contact Carrier.
** For low-temperature applications, where the leaving water temperature is below 5°C, a frost protection solution must be used.
*** For transport and storage of the 30RQS/30RQSY units the minimum and maximum allowable temperatures are -20°C and +48°C. It is recommended that these temperatures are used for transport by container.
**** Defines the frost-free temperature of the hydronic components for use without glycol.
30RQS/RQSY - cooling mode
50
40
30
20
-10
-20
10
0
30RQS
30RQSY
Full load
Minimum load
0 5 10 15 20
Evaporator leaving water temperature, °C
25
NOTE: This operating range applies up top 130 pa static pressure without suction air duct for sizes 060, 070 and
078 and 140-160, and up to 240 pa for all other sizes.
10.2 - Operating range, standard units - heating mode
55
50
45
40
35
30
25
20
-20
Condenser
Entering water temperature at start-up
Leaving water temperature during operation
Entering/leaving water temperature difference
Evaporator
Air temperature
Hydronic module*
Entering air temperature
Kit without pump
Kit with pump (option 116x)
Kit with pump (option 116x) and frost protection option to -20°C (option 42)
°C
°C
K
°C
°C
°C
°C
Note: Do not exceed the maximum operating temperature.
Minimum Maximum
8
25
3
45
55
Minimum Maximum
-15
10
40
-20
0
-20
-
-
-
* Defines the frost-free temperature of the hydronic components for use without glycol.
30RQS/RQSY - heating mode
60
-10 0 10 20 30
Entering air temperature, °C
40 50
Full load
Minimum load
24
10.3 - Water heat exchanger water flow rate
30RQS/
RQSY
039
045
050
060
070
078
080
090
100
120
140
160 flow rate, l/s
Minimum
0.9
0.9
0.9
0.9
1.0
1.2
1.2
1.3
1.5
1.7
2.0
2.3
Maximum*
3.0
3.4
4.2
5.0
5.0
5.5
6.8
6.8
7.7
8.5
10.6
11.2
Maximum dual pump** low pressure*** High pressure***
2.9
3.2
5.1
5.1
6.3
6.5
3.7
4.1
4.1
4.4
7.9
8.2
3.4
3.8
4.4
5.0
5.0
5.2
6.2
6.2
6.5
8.0
8.7
8.9
* Maximum flow rate at a pressure drop of 100 kPa in the plate heat exchanger
(unit without hydronic module).
** Maximum flow rate at an available pressure of 20 kPa (unit with low-pressure hydronic module) or 50 kPa (high-pressure module).
*** Maximum flow rate with single pump is 2 to 4% higher, depending on the size
10.4 - Minimum water flow rate
If the installation flow rate is below the minimum flow rate, there is a risk of excessive fouling.
10.5 - Maximum water heat exchanger water flow rate
This is limited by the permitted water heat exchanger pressure drop. Also, a minimum water heat exchanger ∆T of
2.8 K must be guaranteed, which corresponds to a water flow rate of 0.09 l/s per kW.
10.6 - Water loop volume
10.6.1 - Minimum water loop volume
The minimum water loop volume, in litres, is given by the following formula:
10.6.2 - Maximum water loop volume
Units with hydronic module incorporate an expansion tank that limits the water loop volume. The table below gives the maximum loop volume for pure water or ethylene glycol with various concentrations.
30RQS/RQSY
Static pressure pure water
10% ethylene glycol l
20% ethylene glycol l
30% ethylene glycol l
40% ethylene glycol l bar 1 litres 600
450
330
270
225
039-078
2
400
300
220
180
150
3
200
150
110
90
75
080-160
1 2 3
1680 1120 560
1260 840
930
750
630
620
500
420
420
310
250
210
If the total system volume is higher than the values given above, the installer must add another expansion tank, suitable for the additional volume.
11 - ElECTRICal CONNECTION
11.1 - Control box
Please refer to the certified dimensional drawings, supplied with the unit.
11.2 - power supply
The power supply must conform to the specification on the heat pump nameplate. The supply voltage must be within the range specified in the electrical data table. For connections refer to the wiring diagrams and the certified dimensional drawings.
Volume (l) = CAP (kW) x N, where CAP is the nominal cooling capacity at nominal operating conditions.
application air conditioning
N
2.5*
Industrial process cooling
(See note)
* For sizes 039 to 120, N can be increased up to 4 depending on the size of the hot-water loop to prevent a water temperature drop during the defrost cycle.
NOTE: For industrial process cooling applications, where high stability of the water temperature levels must be achieved, the values above must be increased.
This volume is required to obtain temperature stability and precision. To achieve this volume, it may be necessary to add a storage tank to the circuit. This tank should be equipped with baffles to allow mixing of the fluid (water or brine).
Please refer to the examples below.
WArNINg: Operation of the heat pump with an improper supply voltage or excessive phase imbalance constitutes abuse which will invalidate the Carrier warranty. If the phase imbalance exceeds 2% for voltage, or 10% for current, contact your local electricity supply at once and ensure that the heat pump is not switched on until corrective measures have been taken.
11.3 - voltage phase imbalance (%)
100 x max. deviation from average voltage
example:
Average voltage
On a 400 V - 3 ph - 50 Hz supply, the individual phase voltages were measured to be:
AB = 406 V; BC = 399 V; AC = 394 V
Average voltage = (406 + 399 + 394)/3 = 1199/3
= 399.7 say 400 V
Bad Good
Calculate the maximum deviation from the 400 V average:
(AB) = 406 - 400 = 6
(BC) = 400 - 399 = 1
(CA) = 400 - 394 = 6
Motor
The maximum deviation from the average is 6 V. The greatest percentage deviation is: 100 x 6/400 = 1.5%
Bad Good
This is less than the permissible 2% and is therefore acceptable.
25
11.4 - Recommended wire sections
Wire sizing is the responsibility of the installer, and depends on the characteristics and regulations applicable to each installation site. The following is only to be used as a guideline, and does not make Carrier in any way liable. After wire sizing has been completed, using the certified dimensional drawing, the installer must ensure easy connection and define any modifications necessary on site.
11.5 - field control wiring
IMPORTANT: field connection of interface circuits may lead to safety risks: any control box modification must maintain equipment conformity with local regulations.
Precautions must be taken to prevent accidental electrical contact between circuits supplied by different sources:
• The routing selection and/or conductor insulation characteristics must ensure dual electric insulation.
• In case of accidental disconnection, conductor fixing between different conductors and/or in the control box prevents any contact between the conductor ends and an active energised part.
The connections provided as standard for the field-supplied power entry cables to the general disconnect/isolator switch are designed for the number and type of wires, listed in the table below.
The calculations are based on the maximum machine current (see electrical data tables), and standard installation practises, in accordance with IEC 60364, table 52C have been applied (30RQS units are installed outside):
•
•
No. 17: suspended aerial lines,
No. 61: buried conduit with a derating coefficient of 20.
Refer to the 30RB/30RQ 017-160 Pro-Dialog+ Controls
IOM and the certified wiring diagram supplied with the unit for the field control wiring of the following features:
• Water heat exchanger pump interlock (mandatory)
• Remote on/off switch
• Demand limit external switch
• Remote dual set point
• Alarm, alert and operation report
• Heating/cooling selection The calculation is based on PVC or XLPE insulated cables with copper core. A maximum ambient temperature of
46°C has been taken into consideration. The given wire length limits the voltage drop to < 5% (length L in metres
- see table below).
ImpOrTANT: Before connection of the main power cables (L1 - L2 - L3) on the terminal block, it is imperative to check the correct order of the 3 phases before pro-ceeding to the connection on the main disconnect/ isolator switch.
11.6 - power supply
ATTENTION: After the unit has been commissioned, the power supply must only be disconnected for quick maintenance operations (one day maximum). for longer maintenance operations or when the unit is taken out of service and stored (e.g. during the winter or if the unit does not need to generate cooling) the power supply must be maintained to ensure supply to the heaters (compressor oil crankcase heaters, unit frost protection).
power cable entry
The power cables can enter the control box from below or from the side of the unit, at the bottom of the angle iron.
Pre-punched holes facilitate the entry. Refer to the certified dimensional drawing for the unit. A removable aluminium plate below the control box allows introduction of the cables.
After all possible options have been connected, the transformer ensures the availability of a usable 24 VA or 1 A power reserve for the control circuit on site.
Minimum and maximum connectable wire sections (per phase) for 30RQS units
30RQS/
RQSY
039
045
050
060
070
078
080
090
100
120
140
160
Disconnect switch Connectable wire
Max. connection capacity Minimum calculated section
Section, mm²
1 x 95
1 x 95
1 x 95
1 x 95
1 x 95
1 x 95
1 x 95
1 x 95
1 x 95
1 x 95
1 x 185
Section, mm²
1 x 16
1 x 16
1 x 16
1 x 25
1 x 35
1 x 35
1 x 35
1 x 35
1 x 70
1 x 70
1 x 95
Max. length, m
165
165
165
210
220
220
220
220
280
280
305
1 x 185 1 x 120 320
Note: Power supply cable section (see the wiring diagrams supplied with the unit)
Wire type
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
XLPE Cu
26
1 x 50
1 x 70
1 x 70
1 x 70
1 x 95
1 x 95
1 x 185
1 x 185
Maximum calculated section
Section, mm²
1 x 25
1 x 25
1 x 25
1 x 35
Max. length, m
300
300
300
305
350
380
380
380
410
410
465
465
Wire type
PVC Cu
PVC Cu
PVC Cu
PVC Cu
PVC Cu
PVC Cu
PVC Cu
PVC Cu
PVC Cu
PVC Cu
PVC Cu
PVC Cu
12 - WaTER CONNECTIONS
For size and position of the unit water inlet and outlet con-nections refer to the certified dimensional drawings supplied with the unit. The water pipes must not transmit any radial or axial force to the heat exchangers nor any vibration.
The water supply must be analysed and appropriate filter-ing, treatment, control devices, shut-off and bleed valves and circuits built in, to prevent corrosion (example: damage to the protection of the tube surface if the fluid is polluted), fouling and deterioration of the pump fittings.
Before any start-up verify that the heat exchange fluid is compatible with the materials and the water circuit coating.
In case additives or other fluids than those recommended by
Carrier are used, ensure that the fluids are not considered as a gas, and that they belong to class 2, as defined in direc-tive 97/23/EC.
The pumps in the hydronic module are compatible with
40% propylene glycol and 40% ethylene glycol. But if these fluids are used, the pump fittings need to be replaced more frequently (every 15000 operating hours instead of
25000 hours for an appliacation using water).
Carrier recommendations on heat exchange fluids:
• No NH 4+ ammonium ions in the water, they are very detrimental for copper. This is one of the most important factors for the operating life of copper piping. A content of several tenths of mg/l will badly corrode the copper over time.
• Cl Chloride ions are detrimental for copper with a risk of perforations by corrosion by puncture. If possible keep below 10 mg/l.
• SO
4
2 sulphate ions can cause perforating corrosion, if their content is above 30 mg/l.
• No fluoride ions (<0.1 mg/l).
• No Fe 2+ and Fe 3+ ions with non negligible levels of dis-solved oxygen must be present. Dissolved iron < 5 mg/l with dissolved oxygen < 5 mg/l.
• Dissolved silicon: silicon is an acid element of water and can also lead to corrosion risks. Content < 1mg/l.
• Water hardness: >0.5 mmol/l. Values between 1 and
2.5 mmol/l can be recommended. This will facilitate scale deposit that can limit corrosion of copper. Values that are too high can cause piping blockage over time. A total alkalimetric titre (TAC) below 100 is desirable.
• Dissolved oxygen: Any sudden change in water oxygenation conditions must be avoided. It is as detrimental to deoxygenate the water by mixing it with inert gas as it is to over-oxygenate it by mixing it with pure oxygen.
The disturbance of the oxygenation conditions encourages destabilisation of copper hydroxides and enlargement of particles.
• Electric conductivity: 0.001-0.06 S/m (10-600 µS/cm).
• pH: Ideal case pH neutral at 20-25°C (7 < pH < 8).
ATTENTION: Charging, adding or draining fluid from the water circuit must be done by qualified personnel, using air vents and materials suitable for the products. Water circuit charging devices are field-supplied. Charging and removing heat exchange fluids should be done with devices that must be included on the water circuit by the installer. Never use the unit heat exchangers to add heat exchange fluid.
12.1 - Operating precautions and recommendations
The water circuit should be designed to have the least number of elbows and horizontal pipe runs at different levels.
Below the main points to be checked for the connection:
• Comply with the water inlet and outlet connections shown on the unit.
• Install manual or automatic air purge valves at all high points in the circuit.
• Use a pressure reducer to maintain pressure in the circuit(s) and install a safety valve as well as an expansion tank. Units with the hydronic module include a safety valve and an expansion tank.
• Install thermometers in both the entering and leaving water connections.
• Install drain connections at all low points to allow the whole circuit to be drained.
• Install stop valves, close to the entering and leaving water connections.
• Use flexible connections to reduce vibration transmission.
• Insulate all pipework, after testing for leaks, both to reduce thermal leaks and to prevent condensation.
• Wrap the insulations with a demisting screen.
• If the external unit water pipes are in an area where the ambient temperature is likely to fall below 0°C, they must be protected against frost (frost protection solution or electric heaters).
NOTE: for units not equipped with a hydronic module a screen filter must be installed. This must be installed on the water entering pipes upstream of the pressure gauge and close to the unit heat exchanger. It must be located in a position that is easily accessible for removal and cleaning.
The mesh size of the filter must be 1.2 mm.
The plate heat exchanger can foul up quickly at the initial unit start-up, as it complements the filter function, and the unit operation will be impaired (reduced water flow rate due to increased pressure drop).
Units with hydronic module are equipped with this type of filter.
Do not introduce any significant static or dynamic pressure into the heat exchange circuit (with regard to the design operating pressures).
The products that may be added for thermal insulation of the containers during the water piping connection procedure must be chemically neutral in relation to the materials and coatings to which they are applied. This is also the case for the products originally supplied by Carrier.
27
12.2 - Hydronic connections
The hydronic circuit diagram shows a typical hydronic installation. When charging the water circuit use air vents to evacuate any residual air pockets.
12.3 - frost protection
The plate heat exchangers, the piping and the hydronic module pump can be damaged by frost, despite the built-in anti-freeze protection of the units.
• To prevent corrosion by differential aeration, the complete drained heat transfer circuit must be charged with nitrogen for a period of one month. If the heat transfer fluid does not comply with the Carrier regulations, the nitrogen charge must be added immediately.
12.4 - protection against cavitation (option 116)
To ensure the durability of the pumps in the integrated hydronic modules, the control algorithm of the 30RQS/
RQSY units incorporates anti-cavitation protection.
Frost protection of the plate heat exchanger and all hydronic circuit components is guaranteed:
• Down to -20°C by electric heaters (heat exchanger and internal piping) that have an automatic supply
(units without hydronic module),
• Down to 0°C by an electric heater on the heat exchanger that has an automatic supply and by pump cycling (units with hydronic module),
• Down to -20°C by electric heaters (heat exchanger and internal piping) that have an automatic supply and by pump cycling (units with hydronic module and
“Reinforced frost protection” option).
Never switch off the water heat exchanger and hydronic circuit heaters or the pump, otherwise frost protection can-not be guaranteed. For this reason the main unit disconnect switch as well as the auxiliary protection switch for the heaters must always be left closed (for the location of these components see the wiring diagram).
It is therefore necessary to ensure a minimum pump entering pressure of 60 kPa (0.6 bar) during operation and at shutdown. A pressure below 60 kPa will prohibit unit start-up or cause an alarm with the unit shutting down. In order to obtain sufficient pressure, it is recommended:
• to pressurise the hydronic circuit between 100 kPa
• and 400 kPa (1 and 4 bar) maximum on the suction side of the pump,
• to clean the hydronic circuit before charging water
(see chapters 13.2, 13.3 and 13.4), to regularly clean the screen filter,
ATTENTION: The use the integrated hydronic kits for an open loop is prohibited.
To ensure frost protection of the units with hydronic module water circulation in the water circuit must be maintained by periodically switching on the pump. If a shut-off valve is installed, a bypass must be included as shown below.
Winter position
Closed
Unit
Open
Closed
Water network
ImpOrTANT: Depending on the atmospheric conditions in your area you must do the following when switching the unit off in winter:
• Add ethylene glycol or propylene glycol with an adequate concentration to protect the installation up to a temperature of 10 K below the lowest temperature likely to occur at the installation site.
• If the unit is not used for an extended period, it should be drained, and ethylene glycol or propylene glycol should be charged in the heat exchanger as a safety precaution, using the water inlet purge valve connection.
• At the start of the next season, refill the unit with water and add an inhibitor.
• for the installation of auxiliary equipment, the installer must comply with basic regulations, especially for minimum and maximum flow rates, which must be between the values listed in the operating limit table
(application data).
28
Typical hydronic circuit diagram with hydronic module
(option)
legend
Components of the unit and hydronic module
1 Victaulic screen filter
2 Expansion tank (option)
3 Safety valve
4 Available pressure pump
Note: x 1 for a single pump, x 2 for a dual pump
5 Air purge
6 Water drain valve
Note: A second valve is located on the heat exchanger leaving piping
7 Pressure sensor
Note: Gives pump suction pressure information (see installation manual)
8 Temperature probe
Note: Gives heat exchanger leaving temperature information (see installation manual)
9 Temperature probe
Note: Gives heat exchanger entering temperature information (see installation manual)
10 Pressure sensor
Note: Gives unit leaving pressure information (see installation manual)
11 Check valve
Note: x 2 for a dual pump, not provided for a single pump
12 Plate heat exchanger
13 Water heat exchanger frost protection heater
Installation components
14 Temperature probe well
15 Air vent
16 Flexible connection
17 Shut-off valve
18 Screen filter (obligatory for a unit without hydronic module)
19 Pressure gauge
20 Water flow control valve
Note: Not necessary for a hydronic module with a variable-speed pump
21 Charge valve
22 Frost protection bypass valve (when shut-off valves [17] are closed during winter)
--- Hydronic module (unit with hydronic module)
Notes:
• Units without hydronic module are equipped with a flow switch and two temperature sensors (8 and 9).
• The pressure sensors are installed at connections without Schraeder valves.
Depressurise and drain the system before any intervention.
Hydronic module - sizes 039-078
Dual pump shown
Hydronic module - sizes 080-160
Dual pump shown
29
13 - NOMINal SYSTEM WaTER flOW CONTROl
The water circulation pumps of the 30RQS/RQSY units have been sized to allow the hydronic modules to cover all possible configurations based on the specific installation conditions, i.e. for various temperature differences between the entering and the leaving water (∆T) at full load, which can vary between 3 and 10 K.
This required difference between the entering and leaving water temperature determines the nominal system flow rate.
Use this specification for the unit selection to find the system operating conditions.
Water flow control procedure
When the circuit is cleaned, read the pressures at the pressure gauges (entering water pressure - leaving water pressure), to find out the unit pressure drop (plate heat exchanger + internal water piping).
In particular, collect the data to be used for the control of the system flow rate:
• Unit without a hydronic module: nominal unit pressure drop (plate heat exchanger + internal piping),
• Unit with fixed-speed pump: nominal flow rate,
• Unit with variable-speed pump, controlled by a difference in constant pressure between the unit inlet and outlet: nominal flow rate,
• Unit with variable-speed pump, controlled by the heat exchanger temperature difference: nominal temperature difference at the heat exchanger.
• Compare this value to the initial value.
• If the pressure drop has decreased, this indicates that the screen filter must be removed and cleaned, as the hydronic circuit contains solid particles. In this case close the shut-off valves at the water inlet and outlet
(item 17) and remove the screen filter (item 18) after emptying the hydronic section of the unit (item 6).
• Purge the air from the circuit (items 5 and 15).
• Renew, if necessary, to ensure that the filter is not contaminated.
Compare the value obtained with the theoretical selection value. If the pressure drop read is higher than the value specified the unit flow rate (and thus system flow rate) is too high. The pump supplies an excessive flow rate based on the global pressure drop of the application. In this case close the control valve and read the new pressure difference.
Proceed by successively closing the control valve until you obtain the specific pressure drop that corresponds to the nominal flow rate at the required unit operating point.
If this information is not available at the system start-up, contact the technical service department responsible for the installation to get it. These characteristics can be obtained from the technical literature using the unit performance tables for a ∆T of 5 K at the water heat exchanger or with the Electronic Catalogue selection program for all ∆T conditions other than 5 K in the range of 3 to 10 K.
13.1 - Units without hydronic module
The nominal system flow rate is controlled by a manual valve that must be on the water leaving piping of the system (item 20 in the typical hydronic circuit diagram).
Due to the pressure drop it generates in the hydronic system this flow control valve permits adjustment of the pressure/ system flow rate curve in accordance with the pump pressure/ flow rate curve to obtain the nominal flow rate at the required operating point (see example for unit size 30RQS 078).
NOTE: If the system has an excessive pressure drop in relation to the available static pressure provided by the system pump the nominal water flow rate cannot be obtained
(the resulting flow rate is lower) and the temperature difference between the water heat exchanger entering and leaving water will increase.
To reduce the pressure drops of the hydronic system:
•
• to reduce the individual pressure drops as much as possible (bends, level changes, options, etc.).
to use a correctly sized piping diameter.
• to avoid hydronic system extensions, wherever possible.
Example: 30RQS 078 at Eurovent conditions of 3.7 l/s
The pressure drop reading in the unit (plate heat exchanger
+ internal piping) is used as means of control. This reading can be taken with pressure gauges that must be installed at the unit inlet and outlet (item 19). As the total system pressure drop is not known exactly at the start-up, the water flow rate must be adjusted with the control valve to obtain the specific flow rate for this system.
hydronic circuit cleaning procedure
• Open the valve fully (item 20).
• Start-up the system pump.
• Read the plate heat exchanger pressure drop by taking the difference of the readings of the pressure gauge connected to the unit inlet and outlet (item 19).
• Let the pump run for two consecutive hours to clean the hydronic circuit of the system (presence of solid contaminants).
• Take another reading.
30
Water flow rate, l/s
legend
1 ‘’Unit pressure drop (including internal water piping)/flow rate’’ curve
2 With the valve open the pressure drop read (111 kPa) gives point A on the curve.
a Operating point reached with the valve open.
3 With the valve open the flow rate achieved is 4,8 l/s: this is too high, and the valve must be closed again.
4 If the valve is partially closed, the pressure drop read (65 kPa) gives point B on the curve.
B Operating point reached with the valve partially closed.
5 Wih the valve partially closed the flow rate achieved is 3,7 l/s: this is the required flow rate and the valve is in an adequate position.
13.2 - Units with hydronic module and fixed-speed pump
The nominal system flow rate is controlled by a manual valve that must be on the water leaving piping of the system (item 20 in the typical hydronic circuit diagram).
Due to the pressure drop it generates in the hydronic system this flow control valve permits adjustment of the pressure/ system flow rate curve in accordance with the pump pressure/ flow rate curve to obtain the nominal flow rate at the required operating point.
The flow rate reading in the hydronic module is used as means of control.
The pressure of the transported fluid is measured by sensors installed in the pump suction line and at the unit outlet
(items 7 and 10) and the system calculates the flow rate associated with the differential pressure.
Direct access to the flow rate reading is possible via the user interface (please refer to the 30RB/RQ 017-160
Pro-Dialog+ control manual).
As the total system pressure drop is not known exactly at the start-up, the water flow rate must be adjusted with the control valve to obtain the specific flow rate for this system.
hydronic circuit cleaning procedure
• Open the valve fully (item 20).
• Start-up the system pump.
• Read the plate heat exchanger pressure drop by taking the difference of the readings of the pressure gauge connected to the unit inlet and outlet (item 19).
• Let the pump run for two consecutive hours to clean the hydronic circuit of the system (presence of solid contaminants).
• Take another reading.
• Compare this value to the initial value.
• If the flow rate has decreased, this indicates that the screen filter must be removed and cleaned, as the hydronic circuit contains solid particles. In this case close the shut-off valves at the water inlet and outlet
(item 17) and remove the screen filter (item 1) after emptying the hydronic section of the unit (item 6).
• Purge the air from the circuit (items 5 and 15).
• Renew, if necessary, to ensure that the filter is not contaminated.
Water flow control procedure
When the circuit is cleaned, read the flow rate at the user interface and compare the value obtained with the theoretical selection value. If the flow rate measured is higher than the value specified this means that the total system pressure drop is too low compared to the available static pressure generated by the pump. In this case close the control valve and read the new flow rate.
Proceed by successively closing the control valve until you obtain the specific pressure drop that corresponds to the nominal flow rate at the required unit operating point.
NOTE: If the system has an excessive pressure drop in relation to the available static pressure provided by the unit pump, the nominal water flow rate cannot be obtained
(the resulting flow rate is lower) and the temperature difference between the water heat exchanger entering and leaving water will increase.
To reduce the pressure drops of the hydronic system, it is necessary:
• to reduce the individual pressure drops as much as possible (bends, level changes, options, etc.).
• to use a correctly sized piping diameter.
• to avoid hydronic system extensions, wherever possible.
13.3 - Units with hydronic module and variable-speed pump - pressure differential control
The system flow rate is not controlled by a nominal value.
It is adjusted by the system (pump speed variation) to maintain the user-selected pressure differential between the unit inlet and outlet.
The pressure sensor at the unit outlet (item 10 in the typical hydronic circuit diagram) is used as the means of control.
The system calculates the measured pressure differential value, compares it with the user-selected set point value and modulates the pump speed as necessary. The result is:
• an increased flow rate, if a lower value than the set point is measured,
• an decreased flow rate, if a higher value than the set point is measured.
This flow rate variation is realised, observing the minimum and maximum admissible unit flow rates as well as the minimum and maximum pump supply frequency values.
The pressure differential value maintained can in certain cases be different from the set point value:
• If the set point value is too high (achieved for a higher flow rate than the maximum value or a higher frequency than the maximum value), the system settles at the maximum flow rate or maximum frequency and this results in a lower pressure differential than the set point.
• If the set point value is too low (achieved for a lower flow rate that the minimum value or a lower frequency than the minimum value), the system settles at the minimum flow rate or minimum frequency and this results in a higher pressure differential than the set point.
hydronic circuit cleaning procedure
First of all any possible pollution in the hydronic circuit must be eliminated.
• Start-up the pump using the forced start command
(refer to the 30RB/RQ 017-160 Pro-Dialog+ control manual).
• Set the frequency to the maximum value to achieve a higher flow rate.
• If a “maximum flow rate exceeded” alarm occurs, decrease the frequency until the correct value is found.
• Read the flow rate at the user interface (refer to the
30RB/RQ 017-160 Pro-Dialog+ control manual).
31
• Let the pump run for two consecutive hours to clean the hydronic circuit of the system (presence of solid contaminants).
• Repeat the flow rate reading and compare this value with the initial value.
• If the flow rate has decreased, this indicates that the screen filter must be removed and cleaned, as the hydronic circuit contains solid particles. In this case close the shut-off valves at the water inlet and outlet
(item 17) and remove the screen filter (item 1) after emptying the hydronic section of the unit (item 6).
• Purge the air from the circuit (items 5 and 15).
• Renew, if necessary, to ensure that the filter is not contaminated.
pressure differential set point control procedure
Once the circuit has been cleaned, select the hydronic circuit configuration for which the unit selection has been made (in general, all receivers are open and all emitters are in the on-state).
Read the flow rate on the user interface and compare the value obtained to the theoretical selection value:
• If the flow rate reading is higher than the specified value, decrease the pump supply frequency to decrease the flow rate value (consult the 30RB/RQ 017-160
Pro-Dialog+ control manual).
• If the flow rate reading is lower than the specified value, increase the pump supply frequency to increase the flow rate value (consult the 30RB/RQ 017-160
Pro-Dialog+ control manual).
Continue this procedure until the nominal flow rate at the required unit operating point is reached.
Read the pressure value at the unit outlet that corresponds to the operating point reached (consult the control manual).
Stop the forced operation of the pump and proceed with the configuration of the unit for the required control mode
(consult the 30RB/RQ 017-160 Pro-Dialog+ control manual).
Adjust the control parameters (refer to the control manual):
• Water flow rate control method (pressure)
• Pressure value to be controlled
The unit default configuration is fixed speed, 50 Hz.
notes:
• If the low or high frequency limits are reached before the specified flow rate is reached, keep the frequency control within the low or high limit and read the pressure value at the unit outlet.
• If the user knows the unit outlet pressure value to be maintained in advance, this can be entered directly as the correct parameter. The hydronic circuit cleaning procedure must not be left out.
13.4 - Units with hydronic module and variable-speed pump - temperature difference control
The system flow rate is not controlled by a nominal value.
It is adjusted by the system (pump speed variation) to maintain the user-selected temperature difference value
(delta T) at the heat exchanger.
The temperature probes at the heat exchanger inlet and outlet (items 8 and 9 in the typical hydronic circuit diagram) are used as means of control.
The system reads the measured temperature values, calculates the corresponding temperature difference, compares it with the user-selected set point value and modulates the pump speed as necessary:
• If a higher delta T value than the set point is measured, the flow rate is increased.
• If a lower delta T value than the set point is measured, the flow rate is decreased.
This flow rate variation is realised, observing the minimum and maximum admissible unit flow rates as well as the minimum and maximum pump supply frequency values.
The delta T value maintained can in certain cases be different from the set point value:
• If the set point value is too high (achieved for a lower flow rate than the minimum value or a lower frequency than the minimum value), the system settles at the minimum flow rate or minimum frequency and this results in a lower delta T value than the set point.
• If the set point value is too low (achieved for a higher flow rate that the maximum value or a higher frequency than the maximum value), the system settles at the maximum flow rate or maximum frequency and this results in a higher delta T value than the set point.
hydronic circuit cleaning procedure
Please refer to the hydronic circuit cleaning procedure described in chapter 13.3.
Delta t set point control procedure
Once the circuit has been cleaned, stop the forced operation of the pump and proceed with the configuration of the unit for the required control mode (consult the 30RB/RQ 017-160
Pro-Dialog+ control manual).
There is no particular control, except the control used for the unit control parameters of the delta T to be controlled.
Adjust the control parameters (refer to the30RB/RQ 017-160
Pro-Dialog+ control manual):
• Water flow rate control method (delta T)
• Delta T value to be controlled
The unit default configuration is fixed speed, 50 Hz.
32
13.5 - plate heat exchanger pressure drop (including internal piping) - units without hydronic module
30RQS/RQSY 039-078
150
140
130
120
110
100
1
2 3
4
5
6
90
80
70
60
50
40
30
20
10
0
0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0 5,5 6,0
Water flow rate, l/s
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0 1 2
30RQS/RQSY 080-160
3
1
2
4 5 6 7
Water flow rate, l/s
8
3
9
4
5
6
10 11 12
legend
1. 30RQS/30RQSY 039
2. 30RQS/30RQSY 045
3. 30RQS/30RQSY 050
4. 30RQS/30RQSY 060
5. 30RQS/30RQSY 070
6. 30RQS/30RQSY 078
legend
1. 30RQS/30RQSY 080
2. 30RQS/30RQSY 090
3. 30RQS/30RQSY 100
4. 30RQS/30RQSY 120
5. 30RQS/30RQSY 140
6. 30RQS/30RQSY 160
13.6 - pump pressure/flow rate curve – units with hydronic module (fixed-speed or variable-speed pump, 50 Hz)
250
230
210
190
170
150
130
110
90
70
50
0 1 2
low-pressure pumps
3 4
legend
1. 30RQS/30RQSY 039-090
2. 30RQS/30RQSY 100-120
3. 30RQS/30RQSY 140-160
1 2
8 9
3
10 11 12
High-pressure pumps
250
230
210
190
170
150
130
110
90
70
50
0
1
1 2 3
legend
1. 30RQS/30RQSY 039-100
2. 30RQS/30RQSY 120-160
4 5 6 7
Water flow rate, l/s
8
2
9 10 11 12
33
13.7 - available external static pressure - units with hydronic module (fixed-speed or variable-speed pump, 50 Hz)
Data applicable for:
- Fresh water 20 °C
- In case of use of the glycol, the maximum water flow is reduced.
low pressure pumps
130
120
110
100
90
80
70
60
50
40
30
20
0,0
4
0,5 1,0 1,5
1 2 3
2,0 2,5 3,0
Water flow rate, l/s
3,5
5
4,0
6
4,5 5,0
legend
1. 30RQS/30RQSY 039
2. 30RQS/30RQSY 045
3. 30RQS/30RQSY 050
4. 30RQS/30RQSY 060
5. 30RQS/30RQSY 070
6. 30RQS/30RQSY 078
5,5
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
0
legend
1
1 2
1. 30RQS/30RQSY 080
2. 30RQS/30RQSY 090
3. 30RQS/30RQSY 100
4. 30RQS/30RQSY 120
5. 30RQS/30RQSY 140
2
3 4
3 4 5
Water flow rate, l/s
6
High pressure pumps
200
190
180
170
160
150
4
140
130
120
110
100
90
80
70
60
50
1
2
3
5
0,0 0,5 1,0 1,5 2,0 2,5 3,0
Water flow rate, l/s
3,5 4,0 4,5 5,0
6
5,5
230
220
210
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
0
1
1 2
2
3 4 5
Water flow rate, l/s
6
3
5
7
4
7
8
5
8
9
9
legend
1. 30RQS/30RQSY 039
2. 30RQS/30RQSY 045
3. 30RQS/30RQSY 050
4. 30RQS/30RQSY 060
5. 30RQS/30RQSY 070
6. 30RQS/30RQSY 078
legend
1. 30RQS/30RQSY 080
2. 30RQS/30RQSY 090
3. 30RQS/30RQSY 100
4. 30RQS/30RQSY 120
5. 30RQS/30RQSY 140
34
14 - STaRT-Up
14.1 - preliminary checks
Never be tempted to start the heat pump without reading fully, and understanding, the operating instructions and without having carried out the following pre-start checks:
• Check the chilled water circulation pumps, air handling units and all other equipment connected to the evaporator.
• Refer to the manufacturer’s instructions.
• For units without hydronic module, the water pump overheat protection device must be connected in series with the pump contactor power supply.
• Refer to the wiring diagram supplied with the unit.
• Ensure that there are no refrigerant leaks.
• Confirm that all pipe securing bands are tight.
• Confirm the the electrical connections are secure.
14.2 - actual start-up
ImpOrTANT:
• Commissioning and start-up of the heat pump must be supervised by a qualified refrigeration engineer.
• start-up and operating tests must be carried out with a thermal load applied and water circulating in the water heat exchanger.
• All set point adjustments and control tests must be carried out before the unit is started up.
• please refer to the 30rB/30rQ 017-160 pro-Dialog+ control manual.
The unit should be started up in Local ON mode.
Ensure that all safety devices are operational, especially that the high pressure switches are switched on and that the alarms are acknowledged.
14.3 - Operation of two units in master/slave mode
The control of a master/slave assembly is in the entering water and does not require any additional sensors (standard configuration). It can also be located in the leaving water.
In this case two additional sensors must be added on the common piping.
All parameters, required for the master/slave function must be configured using the Service Configuration menu. All remote controls of the master/slave assembly (start/stop, set point, load shedding, etc.) are controlled by the unit configured as master and must only be applied to the master unit.
Depending on the installation and control type, each unit can control its own water pump. If there is only one common pump for the two units, the master unit can control this. In this case shut-off valves must be installed on each unit. They will be activated at the opening and closing by the control of each unit (and the valves will be controlled using the dedicated water pump outputs).
Standard configuration: return water control
Configuration: leaving water control
2
legend
1 Master unit
Slave unit
Additional CCN board (one per unit, with connection via communication bus)
Control boxes of the master and slave units
Water inlet
T
Water outlet
Water pumps for each unit (included as standard for units with hydronic module)
Additional sensors for leaving water control, to be connected to channel 1 of the slave boards of each master and slave unit
CCN communication bus
Connection of two additional sensors
Check valve
35
14.4 - Supplementary electric resistance heaters
To permit staging of the capacity reduction of the heat pump at low ambient temperatures, as shown in the diagram below, it is possible to install supplementary electric heaters in the leaving water line. Their capacity can compensate for the capacity drop of the heat pump.
These heaters can be controlled via an electronic card mounted on a board (option).
Four outputs are available to control the heater contactors
(not supplied with the board), permitting gradual compensation of the heat pump capacity reduction.
These outputs are configurable to obtain a choice of two, three or four stages. The last stage will only be activated after a shut-down of the heat pump following a fault condition (safety device).
In the diagram below “example of additional electric heaters” the capacity of the four heaters is the same as the capacity of the heat pump at 7°C outdoor air temperature.
This requires only a 400 V-3 ph-50 Hz power supply source, as well as a connection to the unit via a communication bus.
For the required configuration of the stages consult the
30RB/RQ 017-160 Pro-Dialog+ Control IOM.
Typical accessory installation diagram
1
3
5
2
6
legend
1 Electric heater power supply 400 V-3 ph-50 Hz
2 Accessory control board for four additional electric heaters
3 Internal communication bus
4 Heater stage control contactors
5 Power supply for additional heaters
6 Supplementary electric resistance heaters
Example of additional electric heaters
120
A
4
100
1
80
1
2
1
60
2
3
C
4
40
B
20
0
-15 -10 -5 0
legend
1 Stage 1
2 Stage 2
3 Stage 3
Outdoor air temperature, °C
4 Stage 4
A Heat pump capacity variation as a function of the air temperature
B Building thermal load
C Balance point between the capacity supplied by the heat pump and the thermal load of the building
Operating range, in which the heat pump capacity is lower than the building thermal load
Operating range, in which the heat pump capacity is higher than the building thermal load
36
5 10 15
15 - MajOR SYSTEM COMpONENTS
15.1 - Compressors
30RQS/RQSY units use hermetic scroll compressors. Each compressor is equipped with a crankcase oil heater, as standard.
Each compressor sub-function is equipped with:
• Anti-vibration mountings between the unit chassis and the chassis of the compressor sub-function.
• A single pressure safety switch at the discharge.
15.2 - lubricant
The compressors installed in these units have a specific oil charge, indicated on the name plate of each compressor.
The oil level check must be done with the unit switched off, when then suction and discharge pressures are equalised. The oil level must be visible and above the middle of the sightglass in the oil equalisation line. If this is not the case, there is an oil leak in the circuit. Search and repair the leak, then recharge oil, so that it reaches a level between the middle and three quarters of the sight-glass (unit in vacuum).
ATTENTION: Too much oil in the circuit can cause a unit defect. r-22 oils are absolutely not compatible with r-410A oils and vice versa.
NOTE: use only oils which have been approved for the compressors. Never use oils which have been exposed to air.
15.3 - air evaporator/condenser
The 30RQS/RQSY coils are heat exchangers with internally grooved copper tubes with aluminium fins. To prevent ice formation at the bottom of the coils, electric heaters are installed under the sheet metal base. They are switched on, based on the outside temperature.
15.4 - fans
The fans are axial Flying Bird fans equipped with rotating shroud and made of composite recyclable material. The motors are three-phase, with permanently lubricated bearings and insulation class F. See table below.
15.5 - Electronic expansion valve (EXv)
The EXV is equipped with a stepper motor (2625 + 160 /- 0 steps) that is controlled via the EXV board.
15.6 - Moisture indicator
Located on the liquid line, permits control of the unit charge and indicates moisture in the circuit. The presence of bubbles in the sight-glass indicates an insufficient charge or non-condensables in the system. The presence of moisture changes the colour of the indicator paper in the sight-glass.
15.7 - filter drier
This is a one-piece, brazed filter drier, located in the liquid line. The role of the filter drier is to keep the circuit clean and moisture-free. The moisture indicator shows when it is necessary to change the filter drier. The filter drier is a bi-flow device, that means that it filters and dehydrates in both operating modes. The pressure drop is much higher in the heating mode. A difference in temperature between the filter inlet and outlet shows that the element is dirty.
The table below gives the necessary additional information for eco-design requirements (European directive 2009/125/EC).
product/option
Global fan efficiency
Measurement category
Efficiency category
Energy efficiency target N(2013)
Efficiency level at the optimal energy efficiency point
Year of manufacture
Fan manufacturer
Motor manufacturer
Fan reference
Motor reference
Nominal motor capacity
Flow rate
Pressure
Speed
Specific ratio
Product disassembly, recycling or disposal at end of life
Information about minimising environmental impact
* Only for sizes 039-050 and 080-120
** Only for sizes 060-078 and 140-160
%
30RQS standard* or with option 15lS
32.2
A
Static
N(2013) 36
38.7
See label on unit kW m
3
/s
Simonin
A.O. Smith
00PSG000000100A
00PPG000464500A
0.95
3.20
Pa 97 r/s (rpm) 12 (713)
1.002
See service manual
See service manual
30RQS standard**
34.0
A
Static
N(2013) 36
37.4
See label on unit
Simonin
A.O. Smith
00PSG000000100A
00PPG000464600A
2.84
4.27
172
16 (950)
1.002
See service manual
See service manual
30RQSY standard or 30RQS standard with option 42
40.4
A
Static
N(2013) 36
44.3
See label on unit
Simonin
A.O. Smith
00PSG000000100A
00PPG000464700A
2.46
5.12
248
19 (1140)
1.002
See service manual
See service manual
37
15.8 - Water evaporator/condenser
The evaporator/condenser is a plate heat exchanger with one or two refrigerant circuits. The water connection of the heat exchanger is a Victaulic connection. It has a thermal insulation of 19 mm thick polyurethane foam and includes frost protection, as standard.
The products that may be added for thermal insulation of the containers during the water piping connection procedure must be chemically neutral in relation to the materials and coatings to which they are applied. This is also the case for the products originally supplied by Carrier SCS.
NOTEs - monitoring during operation:
• follow the regulations on monitoring pressurised equipment.
• It is normally required that the user or operator sets up and maintains a monitoring and maintenance file.
• If there are no regulations or to complement them follow the control programmes of EN 378.
• If they exist follow local professional recommendations.
• regularly check for possible presence of impurities
(e.g. silicon grains) in the heat exchange fluids. These impurities maybe the cause of the wear or corrosion by puncture.
• The reports of periodical checks by the user or opera-tor must be included in the supervision and mainte-nance file.
15.9 - Refrigerant
30RQS/RQSY units operate with refrigerant R-410A.
15.10 - High-pressure safety switch
30RQS/RQSY units are equipped with automatically reset safety pressure switches on the high-pressure side. For the alarm acknowledgements refer to the 30RB/RQ 017-160
Pro-Dialog+ control manual).
15.11 - Storage tank
30RQS/RQSY units are equipped with mechanically welded storage tanks that permit storing the excess charge when the unit operates in heating mode.
15.12 - four-way valve
This permits reversal of the cycle for operation in cooling and heating mode and during defrost cycles.
15.13 - Control box
The control box of the 30RQS/RQSY units is equipped with electric heaters to prevent condensation during operation at low outside temperatures. They are installed on the top of the control box on the outside, and are covered by a thermal insulation layer. These heaters are switched on, based on the outside temperature.
38
16 - OpTIONS
Options No.
Description advantages Use
Air heat exchanger with pretreated fins
Low temperature glycol solution
Low temperature glycol solution
Very low noise level
Suction filter
Winter operation**
Soft starter
Frost protection down to -20°C
3A
5B
6B
Fins made of pre-treated aluminium
(polyurethane and epoxy)
Low temperature chilled water production down to 0°C with ethylene glycol and propylene glycol. Note: With option 5B the units are equipped with traditional coils (Cu/Al).
Low temperature chilled water production down to -15°C with ethylene glycol and -12°C with propylene glycol. Note: With option 6B the units are equipped with traditional coils (Cu/Al).
15LS Acoustic compressor enclosure and low-speed fans
23B Washable G2 efficiency filter in accordance
28
25
42 with EN 779
Fan speed control via frequency converter
Electronic compressor starter
Electric heater on the hydronic module
Partial heat reclaim
Master/slave operation
High-pressure single-pump hydronic module
High-pressure dual-pump hydronic module
Low-pressure single-pump hydronic module
Low-pressure dual-pump hydronic module
High-pressure variable-speed single-pump hydronic module
High-pressure variable-speed dual-pump hydronic module
High-pressure single-pump hydronic module without expansion tank
High-pressure dual-pump hydronic module without expansion tank
Low-pressure single-pump hydronic module without expansion tank
Low-pressure dual-pump hydronic module without expansion tank
High-pressure variable-speed single-pump hydronic module without expansion tank
High-pressure variable-speed dual-pump hydronic module without expansion tank
JBus gateway
Bacnet gateway
LonTalk gateway
49
58
Partial heat reclaim by desuperheating of the compressor discharge gas.
Unit equipped with an additional field-installed leaving water temperature sensor, allowing master/slave operation of two units connected in parallel
116B Single high-pressure water pump, water filter, expansion tank, temperature and pressure sensors. See hydronic module option.
116C Dual high-pressure water pump, water filter, expansion tank, temperature and pressure sensors. See hydronic module option.
116F Single low-pressure water pump, water filter, expansion tank, temperature and pressure sensors. See hydronic module option.
116G Dual low-pressure water pump, water filter, expansion tank, temperature and pressure sensors. See hydronic module option.
116J Single high-pressure water pump, water filter, expansion tank, temperature and pressure sensors. See hydronic module option.
116K Dual high-pressure water pump, water filter, expansion tank, temperature and pressure sensors. See hydronic module option.
116R Single high-pressure water pump, water filter, temperature and pressure sensors. See hydronic module option.
116S Dual high-pressure water pump, water filter, temperature and pressure sensors. See hydronic module option.
116T Single low-pressure water pump, water filter, temperature and pressure sensors. See hydronic module option.
116U Dual low-pressure water pump, water filter, temperature and pressure sensors. See hydronic module option.
116V Single high-pressure water pump, water filter, temperature and pressure sensors. See hydronic module option.
116W Dual high-pressure water pump, water filter, temperature and pressure sensors. See hydronic module option.
148B Two-directional communications board, complies with JBus protocol
148C Two-directional communications board, complies with Bacnet protocol
148D Two-directional communications board, complies with LonTalk protocol
264 Inlet/outlet screw connection sleeves Water heat exchanger screw connection sleeves
Welded water heat exchanger connection sleeves
Remote Interface
266
275
Welded inlet/outlet connection sleeves
Remotely installed user interface
(communication bus)
* 30RQS/RQSY 039-160 with option 49 or 30RQS 0039-160 with option 6B.
Improved corrosion resistance, recommended for marine environments
Covers specific applications down to 0 °C
Covers specific applications such as ice storage and industrial processes
Noise emission reduction at reduced fan speed
Prevents pollution of the air heat exchanger
Stable unit operation when the air temperature is between
-10°C and -20°C.
Reduced compressor start-up current
Hydronic module frost protection at low outside temperatures
Free high-temperature hot-water production simultaneously with chilled and hot-water production
Operation of two units connected in parallel with operating time equalisation
Easy and fast installation
Easy and fast installation, operating safety
Easy and fast installation
Easy and fast installation, operating safety
Easy and fast installation, reduced power consumption of the water circulation pump
Easy and fast installation, operating safety, reduced power consumption of the water circulation pump
Easy and fast installation
Easy and fast installation, operating safety
Easy and fast installation
Easy and fast installation, operating safety
Easy and fast installation, reduced power consumption of the water circulation pump
Easy and fast installation, operating safety, reduced power consumption of the water circulation pump
Easy connection by communication bus to a building management system
Easy connection by communication bus to a building management system
Easy connection by communication bus to a building management system
Permit connection of the unit to a screw connection
Permit connection of the unit to a connection other than a
Victaulic connection
Remote heat pump control up to 300 m
30RQS/RQSY
039-160*
30RQS 039-160
30RQS 039-160
30RQS/RQSY
039-160
30RQSY
039-078
30RQS 039-160
30RQS/RQSY
039-080
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
30RQS/RQSY
039-160
** Winter operation option: This option allows operation of the unit down to -20°C outside air temperature due to the optimised control of the condensing temperature. One fan is equipped with a frequency converter.
39
17 - SpECIfIC DETaIlS fOR UNITS WITH a faN
WITH avaIlaBlE STaTIC pRESSURE (30RQSY)
Selection based on the pressure drop
The cooling and heating capacities are given for an available pressure of 160 Pa and for a unit without filter.
To calculate the performances at other pressure drops please use the correction factors below.
Cooling mode
30RQSY 039-050/30RQSY 080-120
Duct pressure drop
0
50
100
130
160
200
240
fan speed, r/s
12.00
13.33
14.66
15.46
16.26
17.31
18.36
30RQSY 060-078/30RQSY 140-160
Duct pressure drop
0
50
100
130
160
180
fan speed, r/s
15.83
16.81
17.78
18.36
18.36
18.36
power input coefficient
0.943
0.962
0.980
0.990
1.000
1.012
1.023
power input coefficient
0.929
0.944
0.964
0.978
1.000
1.019
Cooling capacity coefficient
1.019
1.012
1.006
1.003
1.000
0.998
0.996
Cooling capacity coefficient
1.018
1.016
1.014
1.011
1.000
0.991
18 – paRTIal HEaT REClaIM USING DESUpER-HEaTERS (OpTION 49)
Heating mode
30RQSY 039-050/30RQSY 080-120
Duct pressure drop
0
50
100
130
160
200
240
fan speed, r/s
18.36
18.36
18.36
18.36
18.36
18.36
18.36
30RQSY 060-078/30RQSY 140-160
Duct pressure drop
0
50
100
130
160
180
fan speed, r/s
18.36
18.36
18.36
18.36
18.36
18.36
Note:
Pressure drop, clean filter = 6 Pa
Pressure drop, dirty filter = 12 Pa
power input coefficient
0.990
0.990
0.990
1.000
1.000
1.000
1.010
power input coefficient
1.000
1.000
1.000
1.000
1.000
1.001
Heating capacity coefficient
1.016
1.012
1.009
1.005
1.000
0.994
0.981
Heating capacity coefficient
1.026
1.020
1.011
1.007
1.000
0.993
This option permits the production of free hot water using heat reclaim by desuperheating the compressor discharge gases. The option is available for the whole 30RQS/30RQSY range.
A plate heat exchanger is installed in series with the air condenser coils on the compressor discharge line of each circuit.
The control configuration for the desuperheater option is factory assembled.
18.1 - physical data, 30RQS/30RQSY units with partial heat reclaim using desuperheaters (option 49)
30RQS/RQSY partial heat reclaim mode
Operating weight 30RQS units with RTpf coils*
Standard unit without hydronic module
Standard unit with hydronic module option
Single high-pressure pump
Dual high-pressure pump
Operating weight 30RQSY units with RTpf coils*
Standard unit without hydronic module
Standard unit with hydronic module option
Single high-pressure pump
Dual high-pressure pump
Refrigerant charge, units with RTpf coils
Circuit A
Circuit B
Condensers
Desuperheaters on circuits a and B
Water volume
Water volume
Max. water-side operating pressure without hydronic module
Water connections
Connections
Outside diameter
* Weights shown are a guideline only.
kg kg kg kg kg kg kg kg l l kPa in mm
039
515
544
570
530
045
522
552
578
537
050
548
578
603
568
060
561
591
617
582
070
562
591
617
582
078
569
599
625
589
080
762
792
818
776
090
909
941
986
944
100
917
949
994
953
120
973
140
1088
160
1106
1009 1127 1145
1057 1164 1155
1008 1118 1135
560
586
R410A
12,5
-
567
593
13,5
-
597
623
16,5
-
611
637
17,5
-
612
638
18
-
Grooved copper tubes. aluminium fins
-
619
645
16,5
-
806
832
21,5
-
975
1020
27,5
-
985
1030
28,5
-
1044
1092
33
1157
1194
19
19
1174
1211
18,5
18,5
Plate heat exchangers
0,549 0,549 0,549 0,732 0,732 0,732 0,732 0,976 0,976 0,976 0,732 0,732
0,732 0,732
1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
Cylindrical, male gas thread
1
42
1
42
1
42
1
42
1
42
1
42
1
42
1
42
1
42
1
42
1
42
1
42
40
18.2 - Installation and operation of the heat reclaim with desuperheater option
The 30RQS/RQBSY units with the desuperheater option are supplied with one heat exchanger per refrigerant circuit.
During the unit installation the heat reclaim plate heat exchangers must be insulated and frost protected, if required.
Please refer to the typical installation diagram below for the main components and functions of the 30RQS/RQSY units with the desuperheater option.
Typical installation diagram of twin-circuit units with the desuperheater option
%
4
4
&
8
!
7
3
6
2
5
@
$
1 t w y
5
#
2
6
7
8
@
3
!
^
9 w t q r q
)
W q o t e u
R p
Q E
30RQS/RQSY unit with desuperheater option without hydfronic module
Border between 30RQS/RQSY unit and the system
Typical installation
legend
30RQS/RQSY unit components
1 Evaporator
2 Compressor
3 Desuperheater (plate heat exchanger)
4 Air condenser (coils)
5 Expansion valve (EXV)
6 Damage limitation option in case of a fire (safety valve)
7 Electric heater to protect the desuperheater against frost (not supplied)
8 Desuperheater insulation (not supplied)
9 Unit control box
10 NA
11 Desuperheater water inlet
12 Desuperheater water outlet
13 Evaporator water inlet
14 Evaporator water outlet
15 Unit with desuperheater option without hydronic module
16 System heat load
17 Border between the 30RQS/RQSY unit and the typical installation
Installation components (installation example)
20 Pump (hydronic circuit of the desuperheater loop)
21 Shut-off valve
22 Desuperheater water flow balancing and control valve
23 Damage limitation option in case of a fire (safety valve)
24 Expansion tank
25 Charge or drain valve
26 Air purge
27 Heat exchange coil or plate heat exchanger
28 Pressure gauge
29 Flow switch
30 Pump (domestic hot water circuit)
31 Three-way valve + controller
32 Filter to protect the pump and the desuperheaters
33 District water supply
34 Domestic hot water outlet
41
18.3 - Installation
The water connections on the desuperheater water inlets and outlets must not cause any mechanical local constraint at the heat exchangers. If necessary, install flexible connection sleeves.
Install water flow control and balancing valves at the heat exchanger outlet.
The volume of the desuperheater circuit water loop must be as low as possible so that the temperature can increase rapidly when the unit is started up.
18.5 - Operating limits
Desuperheater
Entering water temperature at start-up
Leaving water temperature during operation
air condenser
Outside operating temperature
Minimum Maximum
°C 25*
°C 30
60
65
Minimum Maximum
°C -10 46
* The entering water temperature at start-up must not be lower than 25°C. For installations with a lower temperature a three-way valve is necessary.
19 - BRINE OpTION (OpTION 5B & OpTION 6B)
This option allows production of brine down to 0°C
(option 5B) / -15°C (option 6B). The unit is equipped with suction pipe insulation (option 6B only) and a fan frequency converter.
The minimum entering water temperature at the desuperheater is 25°C. This requires the use of a three-way valve (item
31 in the diagram), with a controller and the sensor controlling the minimum required entering water temperature.
The desuperheater water loop must include a safety valve and an expansion tank. When selecting these, consider the water loop volume and the maximum temperature (90°C) when pump operation is stopped (item 20 in the diagram).
The operating range is a function of the suction pressure, which in turn is a function of:
- the brine type,
- the brine concentration,
- the flow rate,
- the brine temperature,
- the condensing pressure (ambient temperature).
18.4 - Control configuration with the desuperheater option
The unit can operate in two modes.
Example: For operation with ethylene glycol at 45% and a brine temperature of -15°C (entering temperature -10°C), the maximum outside operating temperature will be around
33°C.
Operating range with 45% ethylene glycol
Operating range with 45% ethylene glycol
55
18.4.1 - Efficiency priority mode (standard)
In this mode unit control optimises unit efficiency. Heat reclaim is based on the saturated condensing temperature.
The percentage of the reclaimed heating capacity compared with the total capacity rejected by the condenser increases in proportion to the saturated condensing temperature. This temperature is directly linked to the condenser entering air temperature (entering air temperature in cooling mode and water temperature in heating mode).
45
35
25
15
5
18.4.2 - Reclaim priority mode
In cooling mode only this configuration allows the user to enter a setpoint that is relative to the minimum condensing temperature (default = 40°C) to increase the heating capacity reclaimed at the desuperheaters, if required. This configuration is only effective if the desuperheater contact is activated on the control board (user connection block).
This function is not available for 30RQSY units.
For setpoint control of the minimum saturated condensing temperature and to find the position of the connection block on the board refer to the 30RB/RQ 017-160 Pro-
Dialog+ control manual.
-5
-15
-25
-20 -15 -10 -5 0 5 10
Option 5B
Option 6B
Option 5B
Option 6B
19.1 – frost protection
The evaporator low pressure and frost protection depends on the amount of antifreeze added to the water circuit. The evaporator approach (LWT - SST) as well as frost protection are based on this amount).
Other parameters directly affecting the effective capacity reclaimed at the desuperheater are principally:
• The unit load rates, that decide whether the unit operates at full load (100%) or part load.
• The water entering temperature in the desuperheater as well as the condenser entering air temperature.
It is therefore essential to control the amount of antifreeze in the water loop at the first start-up (circulate for 30 minutes to ensure good homogeneity of the mixture before taking the sample). Refer to the manufacturer’s data to define the frost protection, based on the concentration rate measured.
The frost protection temperature must be used in the unit software parameters.
42
This value will allow the definition of the following limits:
1. Evaporator frost protection
2. Low pressure protection
It is recommended that the commissioning of a brine system is done by Carrier.
For information: The protection values given by our supplier, based on the antifreeze solutions used in the Carrier
Montluel laboratory, are as follows: (these values can change for different suppliers).
The presence of glycol reduces the life of the pump fittings.
It is recommended to change the fittings or the pump:
• every 40 000 hours for applications with water,
• every 15 000 hours for applications with glycol concentrations above 30%.
To facilitate maintenance operations, it is recommended to install shut-off valves upstream and downstream of the unit.
20 - STaNDaRD MaINTENaNCE
Air conditioning equipment must be maintained by professional technicians, whilst routine checks can be carried out locally by specialised technicians.
% by weight, glycol
30
35
40
45
10
15
20
25
freeze point, °C ethylene glycol
-3.8
-6.1
-8.8
-11.8
-15.2
-19.1
-23.6
-29
freeze point, °C propylene glycol
-2.6
-4.3
-6.6
-9.6
-13
-16.7
-20.7
-25.3
Based on the table above, if the ethylene glycol concentration by weight in the water loop is 35% the value of -19.1°C must be used in the software.
It is essential to carry out an annual check (minimum) of the amount of glycol, and adjust the frost protection value in the software based on the rate measured. This procedure must be systematic, if water or antifreeze solution is added.
All refrigerant charging, removal and draining operations must be carried out by a qualified technician and with the correct material for the unit. Any inappropriate handling can lead to uncontrolled fluid or pressure leaks.
WArNINg: Before doing any work on the machine ensure that the power is switched off. If a refrigerant circuit is opened, it must be evacuated, recharged and tested for leaks. Before any operation on a refrigerant circuit, it is necessary to remove the complete refrigerant charge from the unit with a refrigerant charge recovery group.
simple preventive maintenance will allow you to get the best performance from your hvaC unit:
• improved cooling performance
• reduced power consumption
• prevention of accidental component failure
• prevention of major time-consuming and costly interventions
• protection of the environment
The curve below shows the minimum frost protection temperature that must be observed, based on the leaving water temperature.
0
-5
-10
-15
-20
-25
-30
-16
Minimum frost protection temperature
-14 -12 -10 -8 -6 -4
Evaporator leaving water temperature, °C
-2 0
NOTEs:
• for unit frost protection at low air temperature, the brine percentage must be evaluated.
• The maximum glycol rate for units with hydronic kit
(options 116) is 45%.
• The temperature of -15°C brine can only be obtained with ethylene glycol at 45%.
• The maximum recommended temperature difference is 5 K.
There are five maintenance levels for HVAC units, as defined by the AFNOR X60-010 standard.
20.1 - level 1 maintenance
see note in chapter 20.3.
Simple procedures, can be carried out by the user on a weekly basis:
•
•
•
•
•
•
•
Visual inspection for oil traces (sign of a refrigerant leak),
Air heat exchanger (condenser) cleaning - see chapter
‘Air heat exchanger - level 1’,
Check for removed protection devices, and badly closed doors/covers,
Check the unit alarm report when the unit does not work
(see the 30RB/30RQ 017-160 Pro-Dialog+ control manual),
General visual inspection for any signs of deterioration,
Verify the charge in the sight-glass,
Check that the water temperature difference between the heat exchanger inlet and outlet is correct.
ImpOrTANT: for glycol concentrations below 20% a corrosion inhibitor suitable for the application must be used to avoid corrosion due to the agressive nature of brine.
43
20.2 - level 2 maintenance
This level requires specific know-how in the electrical, hydronic and mechanical fields. It is possible that these skills are available locally: existence of a maintenance service, industrial site, specialised subcontractor.
The frequency of this maintenance level can be monthly or annually depending on the verification type.
In these conditions, the following maintenance operations are recommended.
Carry out all level 1 operations, then:
electrical checks
• At least once a year tighten the power circuit electrical connections (see table with tightening torques).
• Check and retighten all control/command connections, if required (see table with tightening torques).
• Remove the dust and clean the interior of the control boxes, if required.
• Check the status of the contactors, disconnect switches and capacitors.
• Check the presence and the condition of the electrical protection devices.
• Check the correct operation of all heaters.
• Check that no water has penetrated into the control box.
• For units equipped with a variable-speed drive regularly check the cleanliness of the filter media to maintain the correct air flow.
Mechanical checks
• Check the tightening of the fan tower, fan, compressor and control box fixing bolts.
Refrigerant circuit
• Fully clean the air heat exchangers with a low-pressure jet and a bio-degradable cleaner.
• Check the unit operating parameters and compare them with previous values.
• Carry out an oil contamination test. Replace the oil, if necessary.
• Check and if necessary re-tighten the Rotalock connections in the oil balancing line to the specified torque value.
• Check the operation of the high-pressure switches.
Replace them if there is a fault.
• Check the fouling of the filter drier. Replace it if necessary.
• Keep and maintain a maintenance sheet, attached to each HVAC unit.
All these operations require strict observation of adequate safety measures: individual protection garments, compliance with all industry regulations, compliance with applicable local regulations and using common sense.
20.3 - level 3 (or higher) maintenance
The maintenance at this level requires specific skills/approval/ tools and know-how and only the manufacturer, his representative or authorised agent are permitted to carry out these operations. These maintenance operations concern for example:
• A major component replacement (compressor, evaporator),
• Any intervention on the refrigerant circuit (handling refrigerant),
• Changing of parameters set at the factory (application change),
• Removal or dismantling of the HVAC unit,
• Any intervention due to a missed established maintenance operation,
• Any intervention covered by the warranty.
• One to two leak checks per year with a certified leak detector and carried out by a qualified person.
Water circuit checks
• Always take care when working on the water circuit to ensure that the condenser close by is not damaged.
• Check the water connections.
• Check the expansion tank for signs of excessive corro-sion or gas pressure loss and replace it, if necessary.
• Purge the water circuit (see chapter ‘Water flow control procedure’).
• Clean the water filter (see chapter ‘Water flow control procedure’).
• Replace the pump fittings after 15000 hours of operation with defrost solution or after 25000 hours of operation with water.
• Check the operation of the low water flow rate safety device.
• Check the status of the thermal piping insulation.
• Check the concentration of the anti-freeze protection solution (ethylene glycol or propylene glycol).
To reduce waste, the refrigerant and the oil must be transferred in accordance with applicable regulations, using methods that limit refrigerant leaks and pressure drops and with materials that are suitable for the products.
Any detected leaks must be repaired immediately.
The compressor oil that is recovered during maintenance contains refrigerant and must be treated accordingly.
Refrigerant under pressure must not be purged to the open air.
If a refrigerant circuit is opened, plug all openings, if the operation takes up to one day, or for longer periods charge the circuit with nitrogen.
NOTE: Any deviation or non-observation of these maintenance criteria will render the guarantee conditions for the HVAC unit nul and void, and the manufacturer,
Carrier SCS, will no longer be held responsible.
44
20.4 - Tightening torques for the main electrical connections
Component/screw type
Soldered screw (pE) customer connection
M8
Designation in the unit
PE
Screw on switch inlet zones
Switch - MG 28908
Switch - MG 28910
Switch - MG 28912
QS_
Switch - MG 31102
Tunnel terminal screw, compressor contactor
KM* Contactor LC1D12B7
Contactor LC1D18B7
Contactor LC1D25B7
Tunnel terminal screw, compressor circuit breaker
QM* Circuit breaker 25507
Circuit breaker 25508
Circuit breaker 25509
Tunnel terminal screw, control power transformer
TC Transformer - 40958E
Transformer - 40959E
Transformer - 40888E
Transformer - 40894E
Compressor earth terminal in the power wiring control box
M6 Gnd
Compressor earth connection
M8 Gnd
Tunnel terminal screw, disconnect switch (fan, pump)
QM_ Disconnect switch GV2ME08
Disconnect switch GV2ME10
Disconnect switch GV2ME14
Tunnel terminal screw, contactor (fan, pump)
KM Contactor LC1K0610B7
Contactor LC1K09004B7
Contactor LC1K0910B7
Contactor LC1K0901B7
value (N·m)
1.7
1.7
2.5
3.6
14.5
8
8
8
15
0.6
5.5
2.83
1.7
0.8 to 1.3
20.5 - Tightening torques for the main bolts and screws
Screw type
Compressor strut
M8 nut
M10 nut
M16 nut
Oil nut
Taptite screw M6
Taptite screw M8
Taptite screw M10
H M8 screw
Metal screw
H M6 screw
Earth screw
Used for
Compressor support
BPHE* fixing
Compressor mounting
Compressor fixing
Oil equalisation line
Fan support, storage tank fixing
Fan motor fixing
Four-way valve fixing
Fan scroll fixing
Sheet metal plates
Stauff clamps
Compressor
* BPHE = Brazed plate heat exchanger
30
18
4.2
10
2.8
30
75
7
13
Torque (N·m)
30
15
30
20.6 - air heat exchanger
We recommend, that finned coils are inspected regularly to check the degree of fouling. This depends on the environment where the unit is installed, and will be worse in urban and industrial installations and near trees that shed their leaves.
WArNINg: Never use pressurised water without a large diffuser. Do not use high-pressure cleaners for Cu/Cu and
Cu/Al coils.
Concentrated and/or rotating water jets are strictly forbidden. Never use a fluid with a temperature above
45°C to clean the air heat exchangers.
Correct and frequent cleaning (approximately every three months) will prevent 2/3 of the corrosion problems.
Protect the control box during cleaning operations.
20.7 - Water heat exchanger maintenance
Check that:
• the insulating foam is intact and securely in place.
• the cooler heaters are operating, secure and correctly positioned.
• the water-side connections are clean and show no sign of leakage.
For coil cleaning, two maintenance levels are used, based on the AFNOR X60-010 standard:
• If the air heat exchangers are fouled, clean them gently in a vertical direction, using a brush.
• Only work on air heat exchangers with the fans switched off.
• For this type of operation switch off the HVAC unit if service considerations allow this.
•
Clean air heat exchangers guarantee optimal operation of your HVAC unit. This cleaning is necessary when the air heat exchangers begin to become fouled. The frequency of cleaning depends on the season and location of the HVAC unit (ventilated, wooded, dusty area, etc.).
45
20.8 - Refrigerant volume
The unit must be operated in cooling mode to find out, if the unit charge is correct, by checking the actual subcooling.
Following a small refrigerant leak a loss of refrigerant, compared to the initial charge will be noticeable in the cooling mode and affect the subcooling value obtained at the air heat exchanger (condenser) outlet, but it will not be noticeable in the heating mode.
ImpOrTANT: It is therefore not possible to optimise the refrigerant charge in the heating mode after a leak. The unit must be operated in the cooling mode to check, if an additional charge is required.
20.9 - Characteristics of R-410a
Saturated temperatures (°C) based on the relative pressure (in kpa)
Saturat.
-9
-8
-7
-6
-13
-12
-11
-10
-17
-16
-15
-14 temp.
-20
-19
-18
-1
0
1
2
3
-5
-4
-3
-2
Relative pressure
434
453
473
493
514
535
557
579
297
312
328
345
361
379
397
415
602
626
650
674
700
726
752
779
4
5
Saturat. temp.
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
25
27
Relative pressure
807
835
864
894
924
956
987
1020
1053
1087
1121
1156
1192
1229
1267
1305
1344
1384
1425
1467
1509
1596
1552
1641
38
39
40
41
34
35
36
37
30
31
32
33
Saturat. temp.
28
29
46
47
48
49
42
43
44
45
50
51
Relative pressure
1687
1734
1781
1830
1880
1930
1981
2034
2087
2142
2197
2253
2311
2369
2429
2490
2551
2614
2678
2744
2810
2878
2947
3017
62
63
64
65
58
59
60
61
66
67
68
69
70
54
55
56
57
Saturat. temp.
52
53
3543
3624
3706
3789
3874
3961
4049
4138
Relative pressure
3088
3161
3234
3310
3386
3464
4229
4322
4416
4512
4610
Aquasnap units use high-pressure R-410A refrigerant (the unit operating pressure is above 40 bar, the pressure at 35°C air temperature is 50% higher than for R-22). Special equipment must be used when working on the refrigerant circuit (pressure gauge, charge transfer, etc.).
46
21 - STaRT-Up CHECklIST fOR 30RQS/30RQSY HEaT pUMpS (USE fOR jOB fIlE) preliminary information
Job name: ...............................................................................................................................................................................................
Location: ................................................................................................................................................................................................
Installing contractor:.............................................................................................................................................................................
Distributor: ............................................................................................................................................................................................
Start-up preformed by: .............................................................. Date: ..............................................................................................
equipment
Model 30RQS/RQSY: .................................................................. S/N ..............................................................................................
Compressors
Circuit a Circuit B
1. Model No. ................................................................................. 1. Model No. ..............................................................................
Serial No. .................................................................................. Serial No. ...............................................................................
2. Model No. .................................................................................. 2. Model No. ..............................................................................
Serial No. ................................................................................... Serial No. ...............................................................................
3. Model No. ..................................................................................
Serial No. ...................................................................................
air handling equipment
Manufacturer .........................................................................................................................................................................................
Model No. ...................................................................................... Serial No. ....................................................................................
Additional air handling units and options .................................
.................................................................................................................................................................................................................
preliminary equipment check
Is there any shipping damage? .................................................... If so, where? ...............................................................................
.................................................................................................................................................................................................................
Will this damage prevent unit start-up? .............................................................................................................................................
Unit is level in its installation
Power supply agrees with the unit name plate
Electrical circuit wiring has been sized and installed properly
Unit ground wire has been connected
Electrical circuit protection has been sized and installed properly
All terminals are tight
All cables and thermistors have been inspected for crossed wires
All plug assemblies are tight
Check air handling systems
All air handlers are operating
All chilled water valves are open
All fluid piping is connected properly
All air has been vented from the system
Chilled water pump is operating with the correct rotation. CWP amperage: Rated: ............... Actual............ ...
Unit start-up
Water pump control has been properly interlocked with the heat pump
Oil level is correct
Compressor crankcase heaters have been energised for 12 hours
Unit has been leak checked (including fittings)
Locate, repair, and report any refrigerant leaks
.................................................................................................................................................................................................................
.................................................................................................................................................................................................................
Check voltage imbalance: AB ................ AC ................. BC..................
Average voltage = ................................... (see installation instructions)
Maximum deviation = ............................ (see installation instructions)
Voltage imbalance = ............................... (see installation instructions)
Voltage imbalance is less than 2%
WArNINg: Do not start the unit if voltage imbalance is greater than 2%. Contact local power company for assistance.
All incoming power voltage is within rated voltage range
47
Check water heat exchanger water loop
Water loop volume
Calculated volume
= ................... (litres)
= ................... (litres)
3.25 litres/nominal kW capacity for air conditioning
6.5 litres/nominal kW capacity for process cooling
Proper loop volume established
Proper loop corrosion inhibitor included .........litres of ...........................
Proper loop freeze protection included (if required) ................ litres of ..............................
Water piping includes electric tape heater up to the water heat exchanger
Return water piping is equipped with a screen filter with a mesh size of 1.2 mm
Check pressure drop across water heat exchanger (no hydronic module) or the external static pressure (with hydronic module)
Entering water heat exchanger = .......... (kPa)
Leaving water heat exchanger = ........... (kPa)
Pressure drop (entering - leaving) = ..... (kPa)
WArNINg (unit without hydronic module): plot the pressure drop on the water heat exchanger flow/pressure drop curve to determine the flow rate in l/s at the nominal operating conditions for the installation. for units with hydronic module, a flow rate indication is displayed by the unit control (consulter the 30rB/30rQ 017-160 pro-Dialog+ control manual).
Flow rate from the pressure drop curve, l/s = ..........
Nominal flow rate, l/s = ......................
The flow rate in l/s is higher than the minimum unit flow rate
The flow rate in l/s corresponds to the specification of ................... (l/s)
Carry out the QUICk test function (see RB/30RQ 017-160 pro-Dialog+ control manual):
Check and register the configuration of the follwoing parameters:
Load sequence selection ....................................................................................................................................................................
Capacity ramp loading selection .......................................................................................................................................................
Start-up delay ......................................................................................................................................................................................
Burner section .....................................................................................................................................................................................
Pump control .......................................................................................................................................................................................
Set point reset mode ...........................................................................................................................................................................
Night-time capacity setback ..............................................................................................................................................................
Re-enter the set points (see controls section) to start up the heat pump
WArNINg: Be sure that all service valves are open, and that the pump is on before attempting to start this machine.
Once all checks have been made, start the unit in the “LOCAL ON” position.
Unit starts and operates properly.
temperatures and pressures
WArNINg: When the unit has run for a while and temperatures and pressures have stabilised, record the following:
Water heat exchanger entering water .................................... Water heat exchanger leaving water ......................................
Ambient temperature .............................................................
Circuit A suction pressure ....................................................... Circuit B suction pressure .......................................................
Circuit A discharge pressure ................................................... Circuit B discharge pressure ...................................................
Circuit A suction temperature ............................................... Circuit B suction temperature ................................................
Circuit A discharge temperature ............................................ Circuit B discharge temperature ............................................
Circuit A liquid line temperature ........................................... Circuit B liquid line temperature ...........................................
Circuit A suction superheat ..................................................... Circuit B suction superheat ....................................................
Circuit A electronic expansion device position ..................... Circuit B electronic expansion device position ....................
NOTEs: ................................................................................................................................................................................................
................................................................................................................................................................................................................
48
Order No: 13465-76, 01.2014 - Supersedes order No: 13465-76, 12.2013.
Manufacturer reserves the right to change any product specifications without notice. www.eurovent-certification.com
www.certiflash.com
Manufacturer: Carrier SCS, Montluel, France.
Printed in the European Union.
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Key Features
- High level of safety and reliability
- Excellent energy efficiency
- Wide range of applications
- Variable-speed fans
- Patented algorithm for optimizing condensing temperature
- Refrigerant leak detection system
- Frost protection
- Desuperheater option for heat recovery
- Brine option for cold climates
- Master/slave mode for multiple unit operation