ENTER THE WORLD

OF HEAT PUMPS
by
Comfort with energy savings
HEATING
SUMMER COMFORT
DOMESTIC HOT WATER

UNE OFFRE COMPLTE
CARRIER EXPERIENCE BACKED BY A LARGE GROUP
Carrier Corporation is a subsidiary of United Technologies Corporation
(NYSE : UTX), which employs 200,000 people and is present in around
180 countries throughout the world.
UTC is a global technology corporation with a long history of pioneering
innovation in aerospace, aviation, helicopter design, climate control,
elevator design and hydrogen fuel cells.
Backed by the strength of UTC, Carrier is a rich source of ideas,
technologies and innovation to help build a better world.
Since 14 years, Nexa designs, manufactures and distributes heating
systems through Europe. Nexa is a pioneer in heating control for
systems with under floor heating.
With up to 100 solutions, from 5 to 300kW, Nexa is the specialist of
residential thermal comfort at low energy cost. Nexa provides you a
solution for each project, for new or existing building and apartment
blocks applications. Nexa is a subsidiary of Carrier Group, and profits
from technology skills of a world class Group.
Through our training centres, sales and after-sales teams, we provide
professional installers with services to best meet customers requirements.
Installers work together with our network of after-sales stations which
help them to ensure the permanent maintenance of your installation.
by
A COMPLETE OFFER
YOUR HEAT PUMP
YOUR HYDRONIC MODULE
+
YOUR TERMINAL UNITS
YOUR DOMESTIC HOT WATER PRODUCTION
+
=
YOUR COMPLETE HEATING SYSTEM
Why choosing a Nexa heating system instead of a simple heat pump?
A heating system provides heating and distributes it through the house
ensuring comfort and energy efficiency. Aheat pump only provides heating.
Nexa systems integrates 100% of necessary components, from the
generator to the terminal units control.
The installation of a Nexa by Carrier system adds value to your house with
contributing to its global energy efficiency.
By purchasing a Nexa by Carrier system, you benefit from a world class
manufacturer warranty for the entire system.
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+
Zone 1
Zone 2
With Conex II, you can adjust the temperature of each
comfort zone of your house from one single place.
Conex II permanently measures and transmits the
temperature of each zone to the hydronic module to
optimize your installation operating.
No more the same room temperature in the whole house!
With Nexa systems you can control independently several
zones of comfort. Each comfort zone has its own hydraulic
circuit and control integrated to the hydronic module. It also
allows you to reduce the temperature in zones that are
unoccupied.
COMFORT ZONES
TH
THE REMOTE CONTROL
YOUR COMFORT
This is the brain of the installation. All the
components are integrated in the hydronic
module to ensure comfort and energy
savings. Depending on the model, the
hydronic module can incorporate
supplementary electric heaters or controls
other generators like boiler, for example in
existing buildings applications.
HE HYDRONIC MODULE
The heat pump allows you to become
independent from the rising costs of fossil
energy sources, and ensures you instant
energy savings.
It is a mean to reduce up to 4 times your
heating bill and limit harmful your greenhouse
gas emissions.
THE HEAT PUMP
Atitaniumplate heat exchanger is used to transfer the heat
fromthe heating generator (heat pump and/or boiler) to the
swimming pool.
The heat exchanger surface allows to heat a swimming
pool of 100 m
3
to be heated.
SWIMMING-POOL HEATING
Make more energy savings with O line range !
Domestic hot water production will be provided with energy efficiency :
- Performance : adapted to heat pump connections or self-sufficient,
- Comfort : Capacity from150 to 280L
- Safety : Electronic anode and expansion vessel for tank protection
and antilegionella cycle.
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DOMESTIC HOT WATER PRODUCTION
YOUR SAVINGS
NEW - INVERTER
73,3%
26%
0,7%
AIR SOURCE SYSTEM
CLIMATIC DATA ANNUAL HEATING COST (Cost in )
RUNNING COST ANALYSIS (% of energy consumption)
Heat pump consumption
Back up
Free energy
City : DUBLIN- IRELAND
Heat load : 12,18kW at -6C
Technology : Inverter
System : BSC06M115-A
Outdoor design temperature : -6
Outdoor average temperature : 9,5C
Terminal unit : Under floor heating
House floor area : 260m
1 396
1 798
2 302
3 854
HP +
supplementary
electric heater
Mains
gas
Heating
oil
Propane
gas
ANNUAL HEATING COST CALCULATION :
This estimation of annual running cost is done for a 20C indoor temperature 7 days a week, 24 hours a day during the entire heating season.
Comparisons with other heating technology are done against high efficiency boilers and takes into account june 2006 energy prices available in local
government website.
Thanks to our selection software, Nexa installer will provide you a running cost and pay back analysis fully in line with your needs.
RUNNING COST
ANALYSIS*
The following examples are done in
different climate zones and for different
applications.
It illustrates the energy savings .
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EXISTING - BOILER BACK UP
EXISTING- BOILER REPLACEMENT
*
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63%
34%
3%
AIR SOURCE SYSTEM
CLIMATIC DATA ANNUAL HEATING COST (Cost in )
RUNNING COST ANALYSIS (% of energy consumption)
City : Paris - FRANCE
Heat load : 9,29kW at -6C
Technology : Soft starter
System : TSR04M65-A
Outdoor design temperature : -6C
Outdoor average temperature : 7,2C
Terminal unit : Radiator
House floor area : 130m
748
1 456
2 378
3 121
HP +
supplementary
electric heater
Mains
gas
Heating
oil
Propane
gas
58,5%
41,1%
0,5%
AIR SOURCE SYSTEM
CLIMATIC DATA ANNUAL HEATING COST (Cost in )
RUNNING COST ANALYSIS (% of energy consumption)
City : Lyon - FRANCE
Heat load : 9,65 kW at -7C
Technology : High temp.
System : B200M10-AH REF
Outdoor design temperature : -7C
Outdoor average temperature : 7,3C
Terminal unit : Radiator
House floor area : 130m
822
1 288
1 649
2 762
HP +
supplementary
electric heater
Mains
gas
Heating
oil
Propane
gas
Heat pump consumption
Back up
Free energy
Heat pump consumption
Back up
Free energy
YOUR QUESTIONS
GROUND SOURCE OR AIR SOURCE ?
Climate in your area, investment costs, energy savings evaluation by comparison with others energy sources are
clinchers to choose the most suitable heat pump type.
Your expert installer Nexa will recommend you the adapted product thanks to our simulation software.
Ground source heat pumps are appropriate for use in homes situated in locations with cold climates where
temperatures dip under -10C for a minimum time of 10 days. In this instance, the return of investment is similar to
an air source heat pump.
WHAT IS THE BOILER BACK UP?
In existing houses, it is possible to keep your existing boiler - if it is in good condition- as a back up to a
medium-temperature heat pump. The boiler provides domestic hot water and takes over from the heat
pump for the coldest days of the year. It is a simple solution to save money quickly.
Some of our indoor hydronic modules act as a back up to the boiler in case of boiler failure.
LOW OR HIGH TEMPERATURE ?
Each type of terminal unit (35C) has its own water temperature. Underfloor
heating operate at low temperature in opposition to old radiators which
operates at high temperature (65C). The choice of heat pump technology
will be made according to terminal units.
It is important to note that only low operating temperatures allow high heat
pump performances.
WHAT IS THE COP?
The coefficient of performance is a measure of your heat
pumps efficiency in standard operating conditions. Aheat
pump operating at 4 COP means that the heat pump
provides 4kWh of heat for 1kWh of energy paid. These
performances are certified by certification companies, like
Eurovent or NFPAC in France. Energy savings come
mainly fromthe heat pump control of the hydronic module.
WHAT IS WEATHER COMPENSATION?
Whatever the heat pump technology, the lower is the hot water production temperature, the higher
is the energy efficiency. Nexa hydronic module, controls the heat pump operating to modify the water
temperature according to the outside temperature. By this way, the heat pump provides very hot
water only when it is very cold outside.
INVERTER ?
Inverter air source technology
makes the heat pump operating
speed varying according to the
heating needs. This technology
is particularly adapted to house
with very low temperature
terminal units.
WHEN A HIGH TEMPERATURE HEAT PUMP IS ADAPTED?
A high temperature heat pump is adapted to boiler replacement, when the drop in radiators operating
temperature is not possible.
Whatever the heat pump technologies, the lower are water temperatures, the higher energy is the
efficiency. Therefore, the weather compensating control is essential to reach the energy efficiency of
heating systems with medium and low temperature heat pumps.
ARE HEAT PUMPS LOUD ?
Nexa heat pumps make less noise than a fridge !
And what about aesthetic aspects ? Nexa offers you a range of heat pump stickers (customized).
With these stickers, heat pumps can be blend into the background.
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A COMPLETE OFFER
AIR SOURCE HEAT PUMP
Reference PCRX06 PCRX08 PCRX11 PCRX15 PCRXS050 PCRXS065 PCRXS090 PCRXS115
Nominal heating capacity in heating mode* (kW) 6,40 8,70 11 14,50 5,05 6,65 9,06 11,52
Nominal absorbed power in heating mode* (kW) 1,64 2,35 2,64 3,55 1,16 1,56 2,05 2,72
COP in heating mode* 3,90 3,70 4,17 4,08 4,36 4,27 4,41 4,23
Sound pressure level at 10m (dB(A)) 37 37 39 41 36 37 40 42
Sound pressure level at 1m (dB(A)) - - - - - - - -
Sound power level (dB(A)) 65 65 67 69 64 65 65 65
Dimensions of the unit HxLxP (mm) 803x800x330 1264x800x300 1278x1103x333 1278x1103x333 690x900x320 820x900x320 1360x900x320 1360x900x320 1
Unit weight (kg) 85 102 139 143 49 51 88 88
Compressor type Scroll DC Twin rotary inverter
Refrigerant type R410-A R410-A
Refrigerant quantity (kg) 2,35 2,65 3,70 3,96 3,70 3,70 2,10 2,10
Operating range at outside temp. (C) -15/+40 -15/+35
Operating range collector temp. (C) - -
Operating range brine source water temp. (C) - -
Max. leaving water temperature (C) +55 +55
Reversible yes yes
Electrical connection power supply (V) 230 230 230 ou 400 400 230 230 230 230
SOFT STARTER** INVERTER
HYDRONIC MODULE
SUPPLEMENTARY ELECTRIC HEATER FOR NEW BUILDINGS OR BOILER REPLACEMENT
Dimensions HxLxP (mm) 640x235x435
Electrical connections power supply (V/Ph/Hz) 230/1/50
Maxi power (kW) 20
Plates material Titanium
Inlet T ; Primary outlet (module HP) / secondary (swimming pool) +45C ; +35C / +26C ; +32C
Primary flow / secondary (m
3
/h) 1,7/2,9
swimming pool PVC./ heat exchanger 32x40 / 26x34
Empty weight (kg) 25
SWIMMING POOL HEATING
Reference XP XT 6kW XT 8kW XB20 XB200 XBP Duoline 150 XTS XBS
Number of comfort zones 1 1 1 2 2 2 1 1 2
Type of module reversible reversible reversible reversible reversible reversible reversible
reversible or
heating only
reversible or
heating only
Supplementary electric heaters (kW) 4kW 2x3 kW 2x4 kW 3x4 kW 3x4,5 kW 2x4 kW 4 kW 0/2/4 kW 0/4/6/8 kW
Dimensions HxLxP (mm) 400x410x250 800x470x350 800x470x350 1050x660x550 1550x830x650 1050x660x550 1423x570x626 800x600x380 1050x560x522
Weight (kg) 20 30 30 70 115 70 85 40 70
Water leaving T max. setpoint in heating mode (C) 65 65 65 65 65 65 65 55 55/70*
Water leaving T max. setpoint in cooling mode (C) 7 7 7 7 7 7 7 7 7
Electrical connection power supply V 230 230 230 230 or 400 230 or 400 230 230 230 230
*Nominal heating conditions: t outside air +7C, t leaving water +35C for air source HPs and 0/-3C collector at LWT 30/35C for ground source HPs
** Soft-starter
* for 0kW of supplementary electric heater (Boiler back up)
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GROUND SOURCE HEAT PUMP
PCRXH-10 PCRXH-15
PCROCAP
06
PCROCAP
08
PCROCAP
11
PCROCAP
13
PCROCAP
17
PCRONAP
11
PCRONAP
13
PCRONAP
17
PCRONAP
20
10,10 14,00 5,90 9,20 12,20 13,70 16,00 9,84 14,11 17,13 20,13
2,70 3,80 1,50 2,30 2,80 3,40 3,50 1,89 2,68 3,28 3,80
3,74 3,68 3,93 3,92 4,36 4,03 4,57 5,10 5,15 5,09 5,24
- - - -
- - 41 42 47 47 48 31 35 36 37
- - 52 52 58 58 59 42 46 47 48
1515x1100x388 1515x1100x388 980x560x575 980x560x575 980x560x575 980x560x575 980x560x575 940x600x570 940x600x570 1 117x900x648 1 117x900x648
147 155 148 152 160 170 175 170 190 200 210
Scroll Scroll Scroll
R407-C R410-A R407-C
2,70 2,89 1,10 1,24 1,55 1,55 1,70 1,71 2,25 2,42 2,58
-16/+24 - -
- -8/+12 -
- - -5/+20
+65 +55 +60
yes yes yes
230 230 or 400 230 230 or 400 400 400 400 230 230 or 400 400 400
HIGH TEMP. COLLECTORS GROUND WATER SOURCE
BOILER BACK UP FOR EXISTING BUILDINGS
Reference Duoline 150 Duoline 280 Sololine
Tank capacity - litres (l) 150 280 280
Maximum water temperature (C) 60 65 55
Dimensions HxLxP (mm) 1423x626x626 1490x650x650 1725x650x650
Empty weight (kg) 85 85 110
Supplementary electric heaters (kW) 1,50 3 3
Electrical connections power supply (V/Ph/Hz) 230/1/50 230/1/50 230/1/50
Type of heat exchanger tubular tubular Refrigerant
Integrates a heat pump no no yes
DOMESTIC HOT WATER
XR30 XR200-3 XB30 XB200-3
1 1 2 2
heatingonly heatingonly reversible reversible
boiler boiler boiler boiler
720x440x400 1550x890x650 1050x660x570 1500x890x715
40 110 70 110
65 65 65 65
7 7 7 7
230 or 400 400 230 or 400 230 or 400
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Solo Line and Duo Line ranges are programmable for off peak mode or permanent mode operating, booster* mode or also EJP (Only for
Sololine) . * increase the temperature for anti-legionella cycles (Except for Duoline150)
LE CRDIT DIMPT
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YOUR INSTALLER
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Since 14 years, Nexa designs, manufactures and distributes heating
systems through Europe. Nexa is a pioneer in heating control for
systems with under floor heating.
With up to 100 solutions, from 5 to 300kW, Nexa is the specialist of
residential thermal comfort at low energy cost. Nexa provides you a
solution for each project, for new or existing building and apartment
blocks applications. Nexa is a subsidiary of Carrier Group, and profits
from technology skills of a world class Group.
Through our training centres, sales and after-sales teams, we provide
professional installers with services to best meet customers requirements.
Installers work together with our network of after-sales stations which
help them to ensure the permanent maintenance of your installation.