Carrier 50HB User manual

INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
50HB/HF
Nominal cooling capacity 12,5 - 35,9 kW
Nominal heating capacity 14,2 - 41,0 kW
50 Hz
Horizontal package air conditionners
Translation of the original document 80053, 09.2016

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Horizontal package air conditionners
Contents
1. Introduction .......................................................................................................................................................................................................3
2. Operation limits .................................................................................................................................................................................................3
3. Technical characteristics (EN-14511-2013).......................................................................................................................................................4
4. Safety advice.....................................................................................................................................................................................................5
5. Unit identification...............................................................................................................................................................................................5
6. Transport...........................................................................................................................................................................................................6
7. Location and assembling ..................................................................................................................................................................................6
Location designation .........................................................................................................................................................................................6
Assembling........................................................................................................................................................................................................6
Sound level .......................................................................................................................................................................................................7
Anchorage for silent-blocks...............................................................................................................................................................................7
Minimum free space for commissioning and maintenance operations .............................................................................................................7
8. Checking before commissioning .......................................................................................................................................................................8
Electrical Connections.......................................................................................................................................................................................8
Checks at centrifugal fans.................................................................................................................................................................................9
Interchangeable position of air supply...............................................................................................................................................................0
Interchangeable position of air return..............................................................................................................................................................11
Air ducts connections......................................................................................................................................................................................11
Condensate drain connection .........................................................................................................................................................................11
9. Options............................................................................................................................................................................................................12
Condensation pressure control .......................................................................................................................................................................12
Air flow control.................................................................................................................................................................................................12
Clogged filter detector.....................................................................................................................................................................................12
Filters ..............................................................................................................................................................................................................12
Electrical heater ..............................................................................................................................................................................................12
10. Safety elements...............................................................................................................................................................................................14
11. Commissioning ................................................................................................................................................................................................14
Checks prior to commissioning .......................................................................................................................................................................14
Possible problems at commissioning..............................................................................................................................................................15
Operational checks .........................................................................................................................................................................................15
12. Maintenance....................................................................................................................................................................................................16
13. Control and analysis of breakdowns................................................................................................................................................................18

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Horizontal package air conditionners
1. INTRODUCTION
The 50HF/HB heat pumps and cooling unit are packages air to air
units, of horizontal compact construction, made for operation indoors.
They are equipped with centrifugal fans, air coils, scroll compressor
and electronic control with microprocessor, optimized components for
the R-410A refrigerant.
Are appropriate for air conditioning applications in medium power in
offices, commercial and industrial spaces where the facade aesthetics
must be preserved.
•50HF Series: Air to air cooling autonomous units.
•50HB Series: Reversible air to air heat pump autonomous units.
The units comply with European Directives: Machinery 2006/42/EC -
EMC 2014/30/EU - LVD 2014/35/EU - PED 2014/68/EC (Category 2)
- RoHS 2011/65/EU - Eco-design 2009/125/CE - Eco-labelling 2010/30/
EU; and with Harmonised Standard: EN 378-2:2012.
After manufacturing, all units are charged with refrigerant and
are tested at the factory, verifying the correct operation of all their
components within the operating range for which they are intended.
Those in charge of the installation, commissioning, operation and
maintenance of the unit must know the instructions contained in this
brochure and the specific technical characteristics of the installation site.
2. OPERATION LIMITS
With control of operation condensation pressure up to -10ºC.
When the outdoor temperature usually reaches less than 5ºC WB
it is recommended installing a support element.
Conditions
air inlet Cooling Heating
Indoor coil
Minimum 14 ºC WB 10 ºC
Maximum 22 ºC WB 27 ºC
Outdoor
coil
Minimum 12 ºC -6 ºC BH 
Maximum 48 ºC 15 ºC WB

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Horizontal package air conditionners
3. TECHNICAL CHARACTERISTICS (EN-14511-2013)
50HB/HF 55 65 80 90 120 160
Cooling
capacities
Cooling capacity (kW) 12,5 15,3 20,1 21,5 27,1 35,9
Power input (kW) 5,2 6,6 7,4 8,5 11,0 15,4
EER performance 2,38 2,30 2,70 2,53 2,47 2,33
Heating
capacity
Heating capacity (kW) 14,2 16,9 21,1 23,1 30,5 41,0
Power input (kW) 4,8 5,7 6,4 7,4 9,3 13,3
COP performance 2,93 2,96 3,29 3,13 3,28 3,10
Outdoor
circuit
fan
Nominal air flow (m3/h) 4.100 4.600 6.500 7.000 10.000 12.200
Available static pressure (mm.w.c) 9 9 10 10 12 12
Type Centrifugal
Number 1
Motor output (kW) 1,1 1,5 1,5 2,2 2,2 3,0
Power input (kW) 0,77 1,01 1,14 1,33 1,37 2,03
Speed (r.p.m.) 1.125 1.207 828 859 589 630
Indoor
circuit
fan
Nominal air flow (m3/h) 2.500 3.100 4.000 4.600 6.000 7.000
Available static pressure (mm.w.c) 5,0 5,0 6,2 6,2 6,2 7,5
Type Centrifugal
Number 1
Motor output (kW) 0,55 1,1 1,1 1,5 1,5 3,0
Power input (kW) 0,35 0,63 0,67 0,94 1,20 1,94
Speed (r.p.m.) 1.115 1.340 1.051 1.150 988 1.168
Compressor
Type Scroll
Compresor number 1
Circuit number 1
Oil type Copeland 3MAF 32cST, Danfoss POE 160SZ, ICI Emkarate RL 32CF, Mobil EAL Artic 22CC
Voulme of oil (l) 1,6 1,6 1,6 3,0 3,3 3,3
Electrical
characteristics
Electrical power supply 400 V / III ph / 50 Hz (±10%)
Power supply 3 Wires + Ground
Maximum
absorbed
current
Compressor (A) 15,0 19,0 19,0 22,0 29,0 35,0
Outdoor fan (A) 2,7 3,6 3,6 5,0 5,0 6,9
Indoor fan (A) 1,6 2,7 2,7 3,6 3,6 6,9
Control (A) 2,0 2,0 2,0 2,0 2,0 2,0
Total (A) 21,3 27,3 27,3 32,6 39,6 50,8
Refrigerant
Type R-410A
Global warming potential (GWP) 2.088
Charge (kg) 2,5 3,0 4,5 4,9 5,0 6,2
Environment impact (t CO2e) 5,2 6,3 9,4 10,2 10,4 12,9
Dimensions
Length (mm) 1.420 1.420 1.760 1.760 2.300 2.300
Width (mm) 1.065 1.065 1.414 1.414 1.820 1.820
Height (mm) 576 576 701 701 824 824
Weight (kg) 245 253 332 375 472 521
Ø Condensate evacuation 3/4”
Cooling capacity calculated in accordance with the EN-14511-2013 standard given for indoor temperature conditions 27ºC, 50% RH and 35ºC outdoor temperature.
Heating capacity calculated in accordance with the EN-14511-2013 standard given for indoor temperature conditions 20ºC and 6ºC WB outdoor temperature.
Total power input by compressor and motorised fans under nominal conditions calculated in accordance with the EN-14511-2013.
Climatic warming potential of a kilogram of fluorinated greenhouse gas in relation to a kilogram of carbon dioxide over a period of 100 years.

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Horizontal package air conditionners
4. SAFETY ADVICE
V-220005
V-220004
To avoid any risk of accident during installation, commissioning or
maintenance, it is obligatory to take into consideration the following
specifications for the units: refrigerated circuits under pressure, refrigerant
presence, electrical voltage presence and implantation place.
Because of all of this, only qualified and experienced personnel can
perform maintenance tasks or unit repairs.
It is required to follow the recommendations and instructions
in the maintenance brochures, the labels, and the specific
instructions.
It is necessary to comply with the norms and regulations in
effect. It is recommended to consult the competent authorities
regarding the applicable regulations for users of units or
components under pressure. The characteristics of these units
or components are included on the plates of characteristics
or in the regulatory documentation provided with the product.
The compressor and line surfaces can reach temperatures
above 100ºC causing burns to the body. In the same fashion,
under certain conditions these surfaces can reach very cold
temperatures that can cause freezing risks.
Use safety goggles and gloves on the job. Be careful with
sharp parts or elements in the unit.
Caution: Before intervening in the unit, verify that the main
power to the unit is cut off. An electric shock can cause
personal damage.
Note: In order to recycle these units follow the stipulations
of Directive 2012/19/EU on Waste electrical and electronic
equipment (WEEE).
These units work with refrigerant gas R-410A.
In case of a leak:
- Toxicity: According to ASHRAE 34, R-410A belongs to the A1/A1 group,
i.e. with high safety both in the mix and also in the case of a leak.
- Although it is not toxic, in case of a leak to atmospheric pressure the
liquid phase evaporates. The resulting vapours are heavier than air
and can displace the technician local air. In case of an accidental
discharge in a closed enclosure, fans must be used to eliminate said
vapours.
- Although the R-410A is not flammable, when in contact with a flame
o hot spot it can decompose in fluorhydric acid HF and fluophosgene
COF2highly toxic and corrosive.
- To detect leaks, an electronic leak detector, an ultraviolet lamp or
soapy water must be used. Flame detectors do not help.
Important: Immediately repair any refrigerant leak, using
a recovery unit specific for R-410A that avoids a possible
mixture of refrigerants and/or oils.
Refrigerant leaks:
A periodical check must be performed for refrigerant gas leaks as
per Regulation (EC) Nº517/2014 over certain greenhouse effect
fluoride gases. Please, consult the frequency of checks in chapter
of “Maintenance”.
Components of the R-410A R-32 R-125
Chemical formula CH2F2 CHF2CF3
Weight ratio 50% 50%
Unitary global warming potential (GWP) 675 3.500
Global warming potential (GWP) 2.088
Note: The serial number must be used in all correspondence
regarding the unit.
All units bear, legibly and indelibly, a data plate located in a prime space,
as appears in the attached image: Check that this plate matches the
correct model.
5. UNIT IDENTIFICATION
Check the condition of the equipment upon delivery.
Check that the details on the label, the packing and the data plate match
the order. If equipment has been damaged, or there is a shortfall in
delivery, notify accordingly.
Ref\Reference No Serie\serial Nbr.Año\An.Year
Producto\Product\Produit
Ref. Produit\Item Nbr
Max.Intensidad\Intensité\CurrentKit Elec.Tension\Voltage
Refrig.KG (Fábrica\Factory\Usine)/Co2 Teq.Refrigerant
NoBoPeso\Poids\WeightPSmax(AP\HP) Temp. Max./ IPPSmax(BP\LP)
Fabricante\Fabricant\Manufacturer:
Compañía Industrial de Aplicaciones Térmicas, S.A.
P. Ind. Llanos de Jarata s/n. 14550 Montilla-SPAIN
Contient des gaz à effet de serre fluorés \ Contains fluorinated greenhouse gases regulated by the Kyoto protocol
Contiene gases fluorados de efecto invernadero regulados por el protocolo de Kyoto
1
16
2 3
4
5 6 7
8 9 10
11 12
13 14 15 17
CARRIER SCS
Route de Thil
01122 Montluel-FRANCE
Legend
1Year of manufacture
2Commercial product name
3Serial number
4Description of the product
5Purchase order number
6Sales order number
7Work order number
8Power supply
9Power output of the auxiliary electrical heaters kit (optional) (kW)
10 Maximum absorbed current under full load (A) ( including the electrical kit)
11 Type of refrigerant
12 Refrigerant content (kg) and Environment impact (CO2Teq.)
13 Maximum service pressure in the high pressure side (R-410A = 42 bar)
14 Maximum service pressure in the low pressure side (R-410A = 24 bar)
15 Maximum operating temperature (refer to “Opration limits”)
Maximum shipment and storage temperature: +50ºC
Electrical protection rating: IP54
16 Operation weight (kg) (empty weight + fluid + refrigerant)
17 Notified Body number for surveillance of the Pressure Equipment Directive

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Horizontal package air conditionners
7. LOCATION AND ASSEMBLING
The unit must be handled with care to avoid transport damage. Thus
we recommend:
- For transport in a container, one must be selected that has an easy
load and unload to the installation location.
- Do not dispose of the skids nor the packaging materials until the
machine is in its final location.
- The unit must be lifted and fixed with care and without inclination
(maximum inclination 15º), since it could harm its operation. Please
refer to the weight and the gravity centre coordinates of each model
stated in the following table.
- The unit is designed to be transported safely by using a forklift truck.
The forks of the forklift truck must ensure that the centre of gravity
of the unit remains within the forks, because a misbalance in the
transport may cause the unit to turn over and fall from the forklift
truck. Check also that the length of the fork entries, so that the entire
weight-bearing structure of the unit can be supported on the forklift
truck. This also prevents the possible introduction of the truck’s fork
into functional parts of the unit that may cause damage to the unit.
The standards and recommendations of the forklift truck must also
be respected with regards to the maximum load, inclination of the
panel, elevation of the load for transport, and, in particular, the
maximum speed.
6. TRANSPORT
- Finally, the unit must be freed from the skids so that the inserts
available for the silent-blocks can be accessed. Each skid is fixed
to the crossbar using M4 screws.
Z
X
Yskid fixing screws
50HB/HF Weight
(kg)
M0000 assembly M1111 assembly
Centre of gravity (mm) Centre of gravity (mm)
X Y Z X Y Z
55 245 591 611 266 609 609 266
65 253 585 617 268 603 615 268
80 332 755 746 308 775 743 308
90 375 764 769 307 744 766 307
120 472 1.104 917 340 1.106 906 340
160 521 1.096 921 343 1.097 910 343
Assembling
- These units can be installed on the floor or on a brick frame or steel
profile.
•Foresee appropriate damping devices in these fixtures to ensure
that noise and vibration transmission is avoided.
Location designation
Before moving the unit, make sure that all panels are fastened in place.
Lift and lower with care.
When choosing the location, whatever may be the selected fashion, the
following precautions have to be taken into consideration:
- It is mandatory to comply with norm UNE-EN 378-3 on Safety
and Environmental Requirements. Part 3: “In situ” installation and
protection to people.
- The area where the unit will be located must be perfectly accessible
for cleaning and maintenance operations (check minimum free space
for maintenance). Leave enough space for air circulation around the
unit.
- It is necessary to check that the structure supports the unit’s weight
(please see weight in the centre of gravity table).
• In the event of assembling directly on silent-blocks to the ground,
it is recommended that a template of the unit’s footprint with the
anchoring points of the silent-blocks be made.
• With the help of the crane or the forklift truck, the unit will be raised
to a sufficient height that the silent-blocks can be screwed into its
base. The 4 silent-blocks must remain oblique to the unit.
• M10 metric threads have been provided for their placement in
the supports indicated in the following section “Anchorage for
silent-blocks”. A hex key 17 or Allen wrench 8 will be used for this
operation based on the type of screw used.
This image shows how the silent-block option that can be supplied
for this unit is fixed to the unit.
• Check that the unit is perfectly levelled.
Centre of gravity coordinates

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Horizontal package air conditionners
It can also be fixed to the ceiling using a threaded rod:
• Insert in the framework ceiling 4 threaded rods.
• Insert the rods through the holes
in the unit base (13 mm).
• Place the antivibration mounts,
insert a washer and turn the nuts
until the unit is well secured.
• If there is enough space between
the framework and the unit, a
rubber or neoprene plate can be
squeezed in.
• Check that the unit is perfectly
levelled.
Threaded rod
DETAIL
Buffer
Spar
Washer
Hexagon nut
50HB/HF A
(mm)
B
(mm)
Weight
(kg)
M000 assembly
Reactions in the supports (kg)
R1 R2 R3 R4
55 1.392 1.092 245 78 58 45 65
65 1.392 1.092 253 81 59 45 67
80 1.732 1.432 332 96 75 70 91
90 1.732 1.432 375 110 88 77 99
120 2.311 1.817 472 125 113 112 122
160 2.311 1.817 521 139 126 122 135
When selecting damping devices both the unit weight and reactions
in the supports must be taken in account and are featured in the
following table.
M10
A
B
R4
R2
R3
R1
Since it is an unit designed to work indoors with ducted supply and
return, both in the indoor and the outdoor circuits, the following aspects
need to be considered as well:
- Ensure that the location of the supply and return grilles does not
generate air recirculation.
- Check that there are no obstructions in the air supply and return grille
slats due to being tightly closed.
- If in the indoor/outdoor circuit the air return is not ducted, it is
necessary to foresee in the plenum formed by the ceiling, framework
and walls, adequately sized grids appropriate so that the circuit in
question aspires the return air.
Sound level
These units are designed to work with a low acoustic level. In any
case, the design of the installation the outer environment, the kind
of building for the noise transmitted in the air and the solid elements
for the vibration transmission must be taken into consideration for the
acoustic radiation.
If necessary, commission a study to an acoustic technician.
C) The sound pressure level of the unit, with the ducted return and
supply connections, measured at a distance of 5 metres, in open field,
directivity at 2 and 1.5 metres from the ground is:
B) The sound power level in the indoor fan outlet to be taken into
account for the silencer calculation:
A) The sound power level in the outdoor fan outlet to be taken into
account for the silencer calculation:
Note: The sound pressure level depends on the installation conditions
and, as such, is only indicated as a guide.
50HB/HF 55 65 80 90 120 160
dB(A) 80,5 82,7 74,4 76,3 83,5 83,3
50HB/HF 55 65 80 90 120 160
dB(A) 72,0 77,4 80,4 77,1 79,2 77,1
50HB/HF 55 65 80 90 120 160
dB(A) 69,3 71,6 69,4 70,8 70,7 71,2
Anchorage for silent-blocks
Minimum free space for commissioning and
maintenance operations

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Horizontal package air conditionners
CARRIERrtc basic Electronic control
All 50HB/HF units have an CARRIERrtc basic electronic control as
standard from the factory comprised of a main board and a TCO user
terminal.
Optionally, this control can have a terminal for pGD1 maintenance
that facilitates the initial scheduling of the unit, the modification of the
operating parameters and the description of the alarms produced.
Note: For more detailed information on this control please refer to the
specific brochure.
• Recommendations for the TCO thermostat installation
From the thermostat some of the unit operation aspects are
controlled: operation modes, setpoint, differential, timings...
Because of this, it is very important to chose
an appropriate location within the room
since in it is where the unit’s control probe
is located.
This probe must report about the environmental
conditions of the occupied area.
8. CHECKING BEFORE COMMISSIONING
Electrical Connections
Note: Under no circumstance should the unit be started without having read the brochure completely.
Connection chart
1
2
3
4
5
6
Outdoor
air circuit
Indoor
air circuit
pGD1
TCO user
terminal
maintenance
terminal (opt.)
No. Description 55 to 160
1Main power supply 400 III (±5%) 3 + GND
2TCO user terminal connection
2 wires for power supply 230V + 1
shielded cable for communication
type AGW20 / 22 (1 braided pair +
drainwire + shielding)
3pGD1 maintenance terminal
connection (optional)
telephone cable 6 wires standard
(RJ12 connector)
4Remote off/on (optional) 2 wires
5Main alarm signal (optional) 2 wires
6Safety electrical heaters (opt.) 2 wires
The same power supply used for powering the control board must
also be used for powering the terminal.
The thermostat must be fixed at a height of 1.5 m y all possible
interferences must be avoided: sun, outdoor air, internal heat
sources... Mount the thermostat to the wall using the bracket, do not
leave it hanging from the wire or embedding it in the wall.
Installation norms
To perform the electric installation of the unit (cable glands , conductor
section and their calculations, protections, etc.), refer to the information
provided in this document (see the technical characteristic table), the
electrical scheme included with the unit and norms in effect that regulate
the installation of air conditioning units and electrical receivers.
The electric power supply of the unit must be sized in accordance with
the maximum power input by the unit taking into account all the options
it features (if necessary, refer to the technical brochure).
Verify that electrical power corresponds to the one on the data plate
and that the voltage remains constant.
Check that the electrical connections are correct and tight
(an electrical diagram is included with each unit, along with
its legend).
Note: All connections in the site are the responsibility of
the installer. These connections are always made as per
the current regulation.
To prevent electrical shocks, make all electrical connections
before energizing the unit. Check that the automatic switch is
closed. Omitting this can cause personal damage. Make the
ground connection before any other electrical connection.
V-220004
V-220005
The installer must fix line protection elements according to
the effective legislation.

9
Horizontal package air conditionners
Electric
panel
Power supply inputs
Position of the electric panel in the units
These units can incorporate an auxiliary electric panel for optional
components such as: transformer for power supply without neutral,
transformer for damper of condensation pressure control and differential
pressostats for dirty filters and control of air flow.
Damper
transformer
Pressostat for
dirty filters
Pressostat for
flow control
Transformer for power
supply without neutral
Auxiliary
electric
panel
Checks at centrifugal fans
- Before commissioning, check the blade rotation direction and that
the axis turns without strokes nor vibrations
- Once running, check the operation conditions:
• pressures,
• flows,
• consumptions.
- The coupling of characteristic bends of the fan and the room is
very important, so that the flows and pressures provided to the duct
network are as required.
Pulley and belt adjustment
Both for the indoor circuit motorfans as well as the outdoor circuit are
coupled by pulleys and belts.
In this type of fans, the following must be taken into considerations:
- The pulleys must be on the same plane, so it is important to check
them with the help of a ruler or a laser aligner.
- In case they are not aligned, remove the pulley screws, and after
removing the taper pin, the set of pulley and taper can be slided over
the axis (this action can be performed both in the motor as well as
in the fan).
- After fixing the pulleys on the same plane, the belt tension is made
by tightening the tensor screw.
- The belt tension must be checked after 24 hours of motor operation.
Attention: Before performing these operations, it is necessary to verify
that the unit is disconnected from mains.
Pulleys must stay on the same plane
Tensor
screw
Pulley
screws
Taper pin

10
Horizontal package air conditionners
Interchangeable position of air supply
Both in the indoor air circuit as well as the outdoor circuit, the supply fan
can be located in either of the two positions indicated in the following
illustration, since both panels are easily interchangeable. This allow
to place it on-site in accordance with the installation requirements.
To change the position of the fan is necessary to keep to the following
procedure:
- Then, dismantle the holder
of the outlet probe, fastened
to the volute with 2 rivets.
Rivets
- The motorised fan unit can be released from the machine base
unscrewing the 4 rivet nuts M8.
- Remove the motorised fan unit together with the panel. This panel is
attached to pillars inside the machine, using 4 sheet-metal screws
Ø 3,5mm.
- With the motorised fan unit out of the machine, dismantle the belt and
the fan pulley.
- After that, remove the motor by unscrewing the 2 fixation bolts of
the motor feet (one on each side of the motor). Turn the motor 180
degrees and reassemble it on the fan. The change of the position
of the pulleys is done to facilitate access in the new location.
- The fan pulley and the belt must be placed on the same side as the
motor pulley.
- Mount the panel and the motorised fan unit in its new location.
- First of all, remove the machine cover, attached to it using self-drilling
screws M4,8.
Fan pulley
Belt Motor pulley
Fixation bolt of the motor
Fixation screws of the fan
New location of belt and pulleys
Outlet probe
Motor turned
Important: for the pulleys adjustment, follow the same procedure as
the one described in the preceding section “Checks at centrifugal fans”.
- Finally, re-assembly the holder of the outlet probe on the fan volute.
This fan relocation involves changing the position both the outlet
probe and belt and pulley of motor and fan; so these components are
accessible in the new location.
Interchangeable panels
- Fix the motorised fan unit to the machine base using the 4 rivet nuts
M8.