Air/water heat pump

Everest

Economical and ecological energy extraction from ambient air.

7

Everest (37-108)_New_Design_v3.indd 7 9/22/2011 7:30:15 PM

 Hoval Everest airtowater heat pump.
Advantages at a glance.

Each hotel, hospital, sport center, etc. requires a large volume of domestic hot water. With the
Hoval air to water heat pump you can produce domestic hot water without harmful emissions,
because no boilers are required.
Everest airtowater heat pumps are using energy from the free ambient air for room and water
heating. In this way, they are highly efficient and offer an attractive price/performance ratio.
By cooling down the ambient air a few degrees, and with the help of electricity as a comple-
mentary energy, pleasant hot water for the entire building is generated.

Economical Ecological

Top marks in Reduced carbon

cost effectiveness footprint

Cost-efficient solution Environment friendly energy

for refurbishments and new buildings acquired from ambient air
Best effectiveness CO2-neutral and particularly
due to high efficiency (COP) environmentally friendly
High economic viability can be seen in conjunction with green electricity
in up to 50% lower heating costs 100% independent of oil and gas
Completely free of emissions

Sophisticated Easy to use

Compact and Extremely quiet

complete operation

Tailored solutions Low-noise

for refurbishments and new buildings due to excellent low noise fans
Fast installation Easily combined with solar plants
due to ready-to-fit systems for even greater eco-balance
Space-saving Fully automatic operation
due to compact design due to intelligent control
Simple installation
due to high flexibility in positioning

Everest (37-108)_New_Design_v3.indd 2 9/22/2011 7:30:16 PM

 Hoval Everest airtowater heat pump.
Heating up Domestic Hot Water by use of Tropical Air.

The cost-free heat of the ambient air

The Everest HT heat pump uses the heat energy of the
ambient air. A ventilator ensures a continuous air flow
through the evaporator. The air leaves the evaporator at
lower temperatures, due to the fact that energy is given to
the refrigerant. This causes the evaporation of the
refrigerant. The compressor then pumps the cool gas to a
higher pressure level which also means a higher tempera-
ture. In the condenser the hot gas turns into liquid by trans-
fering heat to the water. In the expansion valve, pressure
and temperature are reduced. The refrigerant flows back
into the evaporator and the cycle starts again.
Air to Water heat pump cycle

Large temperature range Proven efficiency Smart Control

The ambient air contains heat energy. The heat pumps from Hoval are char- The regulation, simple to use, with its
With the heat pump Hoval Everest, this acterized by their profitability of first or- intelligent monitoring systems, perma-
energy can be used at a temperature der. They guarantee high COP values nently controls the state of operation
as low as 7C. The Hoval Everest lifts which do indicate the relationship be- and immediately indicates the varia-
this energy to a higher level, up to tween the heating power provided by tions compared to the ideal values,
60C. This is economical and eco the heat pump and the electrical power and consequently ensures high safety
logical hot water production. it consumes. The higher this value, the and low operating costs.
more efficient the heat pump works.

Ecological awareness Recognized quality Quiet operation

In our heat pumps we use refrigerants Heat pumps from Hoval exist since The compressor is fixed to the frame
that have no negative effect to the more than 30 years. More than 6000 with anti-vibration-damping. This
ozone layer. pieces are currently sold per year. avoids transmission of vibrations to the
foundation.

Hoval heat pumps and solar plants a perfect couple

Using nature as a cost-effective energy supplier

With a Hoval heat pump in conjunction with a Hoval solar plant, you can
transform your house into a small power station that will cover the bulk of
energy requirements using sustainable, ecological and clean energy
sources. Using the air, earth and sun as energy suppliers is intelligent and
worthwhile.
If supplementary heating is needed, not just for hot water but also for space
heating, Hoval solar plants are an ideal option. By expanding the collector
surface area, enough solar power can be collected to provide supplementary
building heat. Energy savings are between 20 and 35%, depending on the
insulation. In low energy houses, savings can actually reach 50%.

3 3

Everest (37-108)_New_Design_v3.indd 3 9/22/2011 7:30:20 PM

 Hoval Everest airtowater heat pump.
Perfectly adapted to
your individual needs.

In a typical installation scheme, it is

common that the domestic hot water
flows directly through the heat pump.
For highest efficiency, it is advisable
to feed the heat pump with the coldest
water available, i.e. from the bottom of
the hot water storage tank.

Technical data
(37) (62) (72) (108)
Everest

Heating Capacity * kW 37 62 72 108

Power Input * kW 9.2 15 18 27
COP (-) * 4.0 4.1 4.0 4.0

Refrigerant R417a
Refrigerant filling kg 2 x 2.3 3 x 2.3 4 x 2.3 4 x 3.45
Number of Compressors 2 3 4 4

Voltage V 3x400
Max. Current A 25 40.5 49 73.5
Frequency Hz 50

Ambient Temperature C 545

Max. Water Temperatur C 60
Required Water Flowrate m3/h 8 12 16 24

Noise Level dB (A) 65 68 68 68

Weight kg 275 495 622 893
Dimensions (Width/Depth/Height) mm 1200/920/1255 2046/1180/1750 2400/1180/2300 2400/1400/2300

* All figures at Air 20C and Water 55C (A20W55)

Maximum operating water temperature 60C
Minimum operating air temperature 7C
Maximum operating air temperature 45C

Everest (37-108)_New_Design_v3.indd 4 9/22/2011 7:30:26 PM

 Range of models: The heat pump Hoval Everest is available in different sizes from
37 to 108 kW heating capacity. Units with different capacities allow you to find the
solution which is perfectly adapted to your individual needs.
In consequence, low investment costs and high economical benefit are obtained.

Everest (62-108)

Everest (37)

Everest (37-108)_New_Design_v3.indd 5 9/22/2011 7:30:31 PM

 What you can count on.

Sophisticated and complete solutions

from a single source
Consistent Hoval system technology simplifies the links
between different technologies and establishes a reliable
platform for efficient and dependable solutions.
With us, you can easily incorporate solar or biomass
energy solutions into your heating system.
Hoval everything you need from one source.

Planning support from experts

Hoval are happy to assist you and your planning
partners in developing progressive systems, allowing
you to take advantage of our expertise, and to draw on
the experience of our specialists.
Ask about Hoval system solutions and learn more about
the many ways to combine highly efficient condensing
boilers with our range of renewable products.

Hoval Service.
For specialist commissioning and maintenance of your
Hoval appliances contact our service and spare parts
department or your local Hoval partner.
This is your guarantee for economical operation, reliability
and added value.

Conservation of energy protection of the environment.

The Hoval brand is internationally known as one of the leading
suppliers of indoor climate control solutions. More than 65years of
experience have given us the necessary capabilities and motivation
to continuously develop exceptional solutions and technically
superior equipment. Maximising energy efficiency and thus
protecting the environment are both our commitment and our
incentive. Hoval has established itself as an expert provider of
intelligent heating and ventilation systems that are exported to over
50 countries worldwide.

Your heating planner/installation engineer Hoval Aktiengesellschaft

Austrasse 70, FL-9490 Vaduz
Principality of Liechtenstein
(Swiss customs territory)
Phone +423 3992 400
Fax +423 3992 618
E-mail: info@hoval.com
www.hoval.com

Everest (37-108)_New_Design_v3.indd 6 9/22/2011 7:30:39 PM

Hoval Everest (37-108)

Air/Water Heat Pump

Description
Hoval Everest
Air to Water Heat Pump
Compact air/water heat pump for
outside installation.
With suction gas cooled scroll compressor.
With extensive aluminium/Cu lamellar tube
evaporator and coaxial condenser.
Axial fan
Refrigerant cycle with thermostatic ex
pansion valve, filter, gas-liquid seperator,
high and low pressure switches.
With efficient automatic defrosting by hot
gas principle.
Electric and terminal box. With control and
disturbance signalling.
Heating regulator for mounting to the wall.
Filled with refrigerant R417a.

Water connections
Water connections have to be done on site.
Heating and condensate connections of flex
ible pipes with external thread (R).

Condensate connection
The drain pipeline is to be made with suffici
ent incline and without change of the cross-
section.
The water connections and the drain pipeli
nes must be protected against frost on site.
Siphon on site.
Heat source connections
(Air intake or air outlet)
Air intake from the sides.
Air outlet on the top.

Electrical connections
Part N
Connection from the bottom to the left or to
the right. Hoval Everest Heat Output
A20W55
Installation Type kW
Variable and cost-efficient installation possi
bilities. (37) 37 7010 342
(62) 62 7010 343
Delivery (72) 72 7010 344
Complete, packed (108) 108 7010 345

Service

Commissioning

Commissioning must be made by works ser

vice or Hoval trained authorized serviceman/
company is condition for warranty.

For commissioning and other services

please contact your Hoval sales office.

Subject to modification, 16.11.2011 1

Hoval Everest (37-108)

Technical Data
Hoval Everest (37-108)

Everest
Type (37) (62) (72) (108)

Heat output at A7/W35 kW 30.6 55.2 60.0 90.0

Power consumption at A7/W35 kW 8.2 13.9 16.3 22.4
Coefficient of performance at A7/W35 COP 3.7 4.0 3.7 4.0
Heat output at A30/W60 kW 38.6 59.9 77.3 114.2
Power consumption at A30/W60 kW 13.3 18.9 26.8 37.5
Coefficient of performance at A30/W60 COP 2.9 3.2 2.9 3.0
Weight kg 275 495 622 893
Dimensions see Dimensions
Compressor type - Scroll, hermetic
Number of Compressors - 2 3 4 4
Refrigerant type - R417a
Refrigerant filling kg 2 x 2.3 3 x 2.3 4 x 2.3 4 x 3.45
Number of axial Fans - 1 3 2 2
Evaporator - aluminium/Cu lamellar tube
Condenser - koaxial coil
Pressure loss over Condenser Pa 26 28 30 34
Heating flow and return DN 32 50 50 65
Required Water Flowrate min. m3/h 8 12 16 24
Operating pressure max. bar 15
Sound power level dB (A) 65 68 68 68

Electrical data
Voltage V 3 x 400 3 x 400 3 x 400 3 x 400
Operating current Imax. A 25 41 49 74
External protection, Fuse A 30 50 60 80
Frequency Hz 50 / 60 (on request)

Range of application
Ambient Temperature C 5...45
Max. Water Temperature C 60

2 Subject to modification, 16.11.2011

Hoval Everest (37-108)

Dimensions
Hoval Everest (37)
Dimensions in mm

1 Heating flow DN32

2 Heating return DN32
3 Condensate drains on bottom
The condensate drain must be
provided with an air-tight siphon
of minimum height 100 mm
4 Air intake
5 Air outlet
6 Electric and terminal box
7 Performance Plate
8 High-Low-Pressure Gauge (Cycle 1)
9 High-Low-Pressure Gauge (Cycle 2)
10 Cable hole d=30 mm

Subject to modification, 16.11.2011 3

Hoval Everest (37-108)

Dimensions
Hoval Everest (62)
Dimensions in mm

1 Heating flow DN50

2 Heating return DN50
3 Condensate drain
The condensate drain must be
provided with an air-tight siphon
of minimum height 100 mm
4 Air intake
5 Air outlet
6 Electric and terminal box
7 Performance Plate
8 Low-Pressure Gauges (Cycle 1...3)
9 High-Pressure Gauges (Cycle 1...3)
10 Cable hole d=30 mm

4 Subject to modification, 16.11.2011

Hoval Everest (37-108)

Dimensions
Hoval Everest (72, 108)
Dimensions in mm

Heating Connections, Pos. 1,2:

Everest (72): DN50
Everest (108): DN65

1 Heating flow
2 Heating return
3 Condensate drain
The condensate drain must be
provided with an air-tight siphon
of minimum height 100 mm
4 Air intake
5 Air outlet
6 Electric and terminal box
7 Performance Plate
8 Low-Pressure Gauges (Cycle 1...4)
9 High-Pressure Gauges (Cycle 1...4)
10 Cable hole 2 x d=30 mm

Subject to modification, 16.11.2011 5

Hoval Everest (37-108)

Performance data
Data according to EN 14511

Hoval Everest
Type (37) (62) (72) (108)
tVL tA QWP P COP QWP P COP QWP P COP QWP P COP
C C kW kW kW kW kW kW kW kW
5 29.5 7.4 4.0 54.1 13.1 4.1 58.1 14.5 4.0 88.4 21.8 4.1
7 31.2 7.4 4.2 56.9 13.2 4.3 61.0 14.8 4.1 91.5 22.3 4.1
10 33.5 7.6 4.4 61.0 13.2 4.6 67.0 15.2 4.4 98.0 22.6 4.3
30
20 39.8 7.8 5.1 69.2 13.2 5.2 79.6 15.9 5.0 120.0 23.1 5.2
30 43.0 7.9 5.4 73.2 13.3 5.5 86.3 16.0 5.4 129.5 23.8 5.4
40 44.8 8.1 5.5 75.9 13.7 5.5 90.6 16.5 5.5 134.8 24.8 5.4
5 29.1 8.1 3.6 53.1 13.9 3.8 57.8 16.2 3.6 87.0 22.1 3.9
7 30.6 8.2 3.7 55.2 13.9 4.0 60.0 16.3 3.7 90.0 22.4 4.0
10 32.4 8.3 3.9 58.9 14.1 4.2 64.8 16.5 3.9 96.0 22.9 4.2
35
20 38.6 8.6 4.5 67.1 14.3 4.7 77.2 17.2 4.5 118.0 23.9 4.9
30 41.6 8.8 4.7 70.3 14.1 5.0 85.1 17.5 4.9 125.0 24.9 5.0
40 43.1 8.9 4.8 72.2 14.2 5.1 89.3 17.8 5.0 131.0 26.2 5.0
5 28.5 8.8 3.2 52.1 14.4 3.6 56.3 17.1 3.3 86.1 26.9 3.2
7 29.8 8.9 3.3 54.2 14.5 3.7 58.1 17.6 3.3 89.7 27.2 3.3
10 31.5 9.0 3.5 57.6 14.9 3.9 63.1 18.0 3.5 96.1 27.4 3.5
40
20 37.6 9.2 4.1 65.6 15.0 4.4 75.3 18.4 4.1 112.7 26.2 4.3
30 41.0 9.3 4.4 69.7 15.2 4.6 84.6 18.4 4.6 122.0 27.5 4.4
40 42.6 9.5 4.5 71.5 15.4 4.6 88.7 18.6 4.8 127.0 28.6 4.4
5 27.9 9.2 3.0 52.1 15.6 3.3 55.1 17.6 3.1 85.1 27.2 3.1
7 29.3 9.4 3.1 54.0 15.7 3.4 56.5 18.1 3.1 87.9 27.8 3.2
10 31.2 9.5 3.3 55.9 15.9 3.5 62.0 18.9 3.3 94.1 28.3 3.3
45
20 36.3 9.6 3.8 63.1 16.0 3.9 74.0 19.2 3.9 110.0 28.5 3.9
30 40.1 9.7 4.1 66.9 15.8 4.2 83.0 19.4 4.3 119.0 29.0 4.1
40 42.1 9.8 4.3 67.9 15.8 4.3 87.0 19.8 4.4 125.0 29.8 4.2
5 27.0 10.3 2.6 51.0 15.7 3.2 54.2 19.4 2.8 84.2 31.5 2.7
7 28.9 10.7 2.7 52.5 15.9 3.3 55.8 20.1 2.8 86.5 32.0 2.7
10 30.9 10.8 2.9 54.7 15.9 3.4 59.2 19.7 3.0 90.8 32.4 2.8
50
20 35.8 10.9 3.3 61.5 16.1 3.8 72.1 19.3 3.7 109.1 32.5 3.4
30 39.4 10.9 3.6 64.9 16.2 4.0 81.0 20.2 4.0 118.2 30.3 3.9
40 41.6 11.2 3.7 66.2 16.3 4.1 84.5 20.6 4.1 123.8 30.6 4.0
5 26.5 10.4 2.5 49.5 17.4 2.8 52.1 20.8 2.5 82.0 33.1 2.5
7 28.1 10.8 2.6 51.2 17.6 2.9 54.0 21.0 2.6 85.0 33.6 2.5
10 30.0 11.1 2.7 53.2 17.6 3.0 57.2 21.2 2.7 89.0 33.9 2.6
55
20 37.0 12.3 3.0 62.0 17.8 3.5 72.0 21.6 3.3 108.0 34.2 3.2
30 39.0 12.4 3.1 63.6 18.0 3.5 80.0 21.9 3.7 117.5 34.8 3.4
40 40.8 12.5 3.3 64.4 18.4 3.5 82.0 22.1 3.7 121.4 35.8 3.4
5 25.6 12.3 2.1 47.2 17.9 2.6 51.0 25.6 2.0 79.2 38.6 2.1
7 27.3 13.0 2.1 48.6 18.5 2.6 53.0 26.1 2.0 82.2 39.1 2.1
10 29.2 13.2 2.2 50.5 18.7 2.7 56.0 26.5 2.1 86.3 38.2 2.3
60
20 33.8 13.3 2.5 56.9 18.7 3.0 71.1 26.7 2.7 99.2 36.2 2.7
30 38.6 13.3 2.9 59.9 18.9 3.2 77.3 26.8 2.9 114.2 37.5 3.0
40 40.4 13.4 3.0 60.6 18.9 3.2 81.1 27.3 3.0 117.0 39.1 3.0
tVL = heating flow temperature (C)
tA = outside temperature (C)
Q = heat output (kW)
P = power consumption of the whole device (kW)
COP = performance of the whole device (t 5K according to EN 14511)

6 Subject to modification, 16.11.2011

Hoval Everest (37-108)

Installation
Dimensions in mm

Everest (37)

Everest (62-108)

Subject to modification, 16.11.2011 7

Hoval Everest (37-108)

Installation

3 2
5 4

1 Heating flow, very well insulated

2 Heating return, very well insulated
3 Electrical connection
4 To be provided by the customer, socket or garden plate
on the gravel underlay (recommended minimum height
300 mm)
5 Condensate drain with siphon, water seal height at least
100 mm
Frost protected drain must be provided!

Installation
The following boundary conditions must be kept: Electric connections
The installation place should be selected in such a way that air Electric connection cables must be short, connected flexibly and be
intake and outlet is not hampered or obstructed leaves etc. routed by technicians and accoding to local prescription.
There should be provided sufficient space for intake and outlet as Where trace heating tapes for the condensate drain and the flow
well as for operation and maintenance. and return lines are used, they must be connected externally in
Air short-circuit must be avoided. The space necessary for intake accordance with applicable regulations and additionally protected by
and outlet must bealways provided. a ground fault circuit interrupter.
Intake air must be completely free from aggressive substances like
ammonia, sulphur, chlorine etc.
The installation place should not be situated under living rooms or
bedrooms because of sound emission and be placed at sufficient
distance from the neighbouring building.
Is not recommended to install the heat pump into wall niches (air
short-circuit, sound echo)
The heat pump must not be installed in a trough (in the terrain or
building).

Air intake and outlet

Take particular account of the sound emissions. Local presciptions must
be observed. Heating connections and pipelines
The pipelines for outdoors (flow and return) should be selected
Condensate pipeline as short as possible.
Condensate must be able to run off freely (frost pretected drain). The The pipelines and the condensor should be professionally in
condensate drain must be provided on-site with an air-tight siphon of stalled with thermal insulation and antifreeze agent
minimum height 100 mm. (e.g. self-doped electric trace heating).
Deaeration and emptying of the heat pump must be ensured.
Wall lead through
Wall lead through for pipelines must be implemented and sealed by
technicians.

8 Subject to modification, 16.11.2011