iDM TERRA AL 60 Max Guide

DIE E
N
ER
G
IEFA
M
ILI
E
TECHNICAL DOCUMENTATION
INSTALLATION INSTRUCTIONS
Air-water-heat pumps
for outdoor installation
HEAT PUMPS FROM AUSTRIA
www.idm-energie.at
TERRA AL 60 Max
with NAVIGATOR 2.0 Controler
812576 Rev.3 - Translation of Original Instructions

(C) IDM ENERGIESYSTEME GMBH
2
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
2
Contents
Contents
1. GENERAL DESCRIPTION 4
1.1. General information 4
1.2. Safety instructions 4
1.3. Transport and storage 4
1.4. Sound emission 4
1.5. Construction drying and floating screed heating 4
1.6. Minimum heating temperature for air hat pumps 4
1.7. Service and maintenance 4
1.8. Cleaning 5
1.9. Ice-Covering outdoor unit 5
1.10. Installation area 5
1.11. Information on environmental protection 6
1.12. Installation of additional components 6
1.13. Standards and guidelines 6
1.14. Description 6
1.15. Intended use 7
1.16. Scope of delivery 7
1.17. Accessories 7
2. TECHNICAL DATA 8
2.1. Dimensions TERRA AL 60 Max 8
2.2. Dimensions electrical cabinet 8
2.3. Technical data 9
3. DIMENSIONING 11
3.1. Heat output at different flow temperatures and full power (2-stages) 11
3.2. Heat output at different flow temperatures and partial load (1-stage) 11
3.3. Limitation of use - Heating 12
3.4. Limitation of use - Cooling 12
4. PLACEMENT AND INSTALLATION 13
4.1. Installation instructions 13
4.2. Customer preparation 13
4.3. Condensation run-off 13
4.4. Heating connections 13
4.5. Air outlet 13
4.6. Acoustic evaluation 14
4.7. Transport 16
4.8. Placing the heat-pump on site 17
4.9. Foundation construction 18
4.10. Wind direction 20
4.11. Decoupling from the building 20
4.12. Space requirements 20
4.13. Space requirements cascade 21
4.14. Condensate run off 22

(C) IDM ENERGIESYSTEME GMBH Installation instructions TERRA AL 60 Max 3
Contents
Contents
Important information on assembly and operation of the heat pump. These instructions must be
observed!
5. HEATING CONNECTIONS 23
5.1. Requirements heating connections 23
5.2. Frost protection 24
5.3. Cleaning filter ball valve 25
5.4. Level of hydraulic connections 25
5.5. TERRA AL 60 Max with heating buffer and mixed heating circles 26
5.6. TERRA AL 60 Max with Hygienik without layer seperate plate and heating buffer 27
5.7. TERRA AL 60 Max with heating and cooling buffer 28
5.8. TERRA AL 60 Max cascade system with heating buffer 29
5.9. TERRA AL 60 Max cascade system with Hygienik without layer seperate plate and heating buffer 30
6. ELECTRICAL CONNECTION 31
6.1. Power supply 31
6.2. Connection diagram for the electric components 32
6.3. EMC compatibility 33
6.4. Lightning protection and potential compensation 33
6.5. Assigning the inputs on the central unit 34
6.6. Configuration of sensors 34
6.7. Sensor configuration 34
6.8. Flow temperature sensor 34
6.9. Configuration of outputs 34
6.10. Connecting the mixers 34
6.11. Grounding the system 34
6.12. Maximum delimitation in underfloor heating 35
6.13. Sum signal zone valves 35
6.14. Connecting external specifications 0-10 V 35
6.15. Opening and closing the electrical cabinet 35
7. START-UP 36
7.1. Information regarding the start-up 36
7.2. Switching the heat pump on for the very first time 36
7.3. Operation 36
7.4. Errors 36
8.1. Performance data according EN 14511 37
8. APPENDIX 37
8.2. Product data sheet - energy label 38
8.3. Declaration of Conformity 39
Subject to changes with regard to engineering and design!

(C) IDM ENERGIESYSTEME GMBH
1
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
4
1. General description
1.1. General information
By purchasing this system you have decided in favor
of a modern and cost-effective heating system. Con-
tinuous quality controls and improvements as well as
functional checks at our production facilities guaran-
tee technically error-free equipment.
Please read this documentation carefully. It con-
tains important instructions for a correct installa-
tion, for the reliable and an economical operation
of the system.
1.2. Safety instructions
Installation and maintenance operations can be as-
sociated with dangers resulting from high system
pressures, high temperatures and voltaged parts.
Heat pumps may only be installed by competent spe-
cialist and exclusively put into operation by a cus-
tomer service specialist trained for that purpose by
iDM-Energiesysteme GmbH.
If maintenance work is being done on the heat pump,
disconnect the system and ensure that it is volt-free
and provided with a safeguard to prevent unintention-
al restarting. Furthermore all safety instructions in the
respective documentation or on instruction plates af-
fixed to the heat pump itself resp. all other pertinent
safety regulations shall be observed.
1.3. Transport and storage
In transporting the heat pump ensure that it is never
tilted by more than 15°. Do not remove the transport
packaging until the heat pump has reached its instal-
lation location. Heat pump components must not be
stored outside. Heat pumps must not be stored in
humid rooms or dusty environments. The transport
fixtures as described in the following assembly
instructions are used to transport the heat pump
manually. The transport fixtures must not be used for
transporting the components with a crane or similar
hoisting equipment.
1.4. Sound emission
TERRA heat pumps run extremely smoothly due
to their construction. It is nevertheless important to
ensure that the heating room is located beyond the
noise-sensitive living area and furnished with a well-
closing door.
1.5. Construction drying and floating screed
heating
During drying or screed heating, the heat require-
ment can exceed the heating capacity many times
over due to the high moisture content of the building.
The heat pump system is not designed for this in-
creased heat requirement. In continuous operation of
the heat pump, there is a risk that the outdoor unit will
ice-up due to overload. For this reason, the increased
heat requirement must be covered by units to be pro-
vided by the customer.
1.6. Minimum heating temperature for air hat
pumps
In order for air heat pumps to perform defrosting
properly, a minimum temperature of 20 °C on the
heating side is required. During the heating season,
this temperature must not be fallen below. If this
temperature is not reached, a bivalent heat generator
must be used to reheat to the minimum temperature
of 20 °C. The temperature must not be lower than
20 °C during the heating season. The air heat pump
must not be switched offduring this time.
1.7. Service and maintenance
Regular maintenance as well as an inspection and
maintenance of all important system components
guarantees a reliable and low-price operation of the
system in the long term. We recommend you to sign
a maintenance contract with your competent cus-
tomer service.

(C) IDM ENERGIESYSTEME GMBH Installation instructions TERRA AL 60 Max 5
General description
1.8. Cleaning
If necessary, the TERRA heat pump can be cleaned
using a humid cloth. The use of cleaning agents is
not recommended.
The air vent package in the air heat exchanger
has to be inspected regularly and cleared of any im-
purities (e.g. foliage,...), if necessary.
To avoid water damage, the condensation bin and the
condensation run-offtube must be cleaned regularly.
1.9. Ice-Covering outdoor unit
Depending on the weather and outdoor humidity, it
may happen that there will be formed an icy covering
on the protective grids of the heat pump. This effect
is common occuring in nature. This covering must
be removed by the heat pump operator during this
weather periods.
- The installation of the indoor parts (loading pump,
electrical cabinet ...) in wet or damp environ-
ments or in areas exposed to dust or explosion
hazards is non-permissible.
- In the case of danger, leave the installation site
immediately.
- The indoor parts of the heat pump must not be
installed in rooms with high EMC load!
- If the heat pump is installed near the coast, at
least 5 km safety distance must be respected. If
the distance is not respected, it is to be expected
with increased corrosion. This case is excluded
from the warranty.
- The indoor parts of the TERRAAL 60
Max heat pump has to be installed in
a frost-proof room! (room temperature
must lie between 5°C and 25°C!)
Since the temperatures in heating mode
inside the outdoor unit are even under
the ambient-temperature, it may come
to a condensation on the cabinet of the
outdoor unit.
1.10. Installation area
All hydraulic pipings and all wall ducts
must be thermally insulated and sound-
decoupled. Water piping must be de-
signed frost-proof.

(C) IDM ENERGIESYSTEME GMBH
1
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
6
General description
The lower the maximum flow temperature
is, the higher the coefficient of perfor-
mance (COP) of the heat pump will be.
1.14. Description
TERRA AL 60 Max is a compact air-water-heat pump
for the outdoor installation. The heating controller
(Navigator) developed especially for this system of-
fers a variety of additional applications, e.g. Smart
Grid, Remote Control or operation via a smart phone.
The Navigator 2.0 is located in the electrical cabinet
and has to be installed interior.
The TERRA AL 60 Max is working with two compres-
sors and also with two completely separated refriger-
ant circles. So the heat pump can work as a dobble
stage system. This system allows a simultaneous
execution of differant modes. During one refrigerant
circle ist working in heating mode, the other one can
work in defrosting mode. In addition the two refriger-
ant circles ensures a top level of safety in operation. A
lot of set SRS (Sound reduction system) actions en-
sures a very low sound power level.
The compressors operate with a special refrigerant
liqid injection. This also allows very high flow temper-
atures at very low outdoor temperatures (up to 60 °C
flow temperatur at -20 °C outdoor temperature).
The heat pump is able to control one heating circuit
without any accessories. When using heating circuit
control modules up to 6 heating circles can be con-
trolled.
The TERRA AL 60 Max is filled with the safety refrig-
erant R410A. The NAVIGATOR control includes an
internal heat metering. This means there are no lon-
ger additional flow meters required.
To supervise the heat pump flow the provided flow
switch has to be installed in a horizantal position
ointhe heat pump return.
For the installation of the heat pump all
pertinent national and international lay-
ing, installation, accident prevention and
safety regulations of pipeline systems
and electric components and equipment
as well as instructions in this assembly
manual must be observed.
1.11. Information on environmental protection
Heat pumps are electronic devices of
high-quality material which must not be
disposed of in the same way as house-
hold waste. They must be disposed of in
a professional and appropriate manner
pursuant to the regulations of the local
authorities.
Disposal contrary to the regulations
may lead damage the environment and
health with the exception of sanctions
imposed on law breakers.
1.12. Installation of additional components
The installation of additional components which have
not been verified with the equipment may impair the
function. No warranty or liability shall be assumed for
any damage resulting therefrom.
1.13. Standards and guidelines
These comprise among others:
- the generally valid accident prevention and safety
regulations
- the provisions regarding environmental protection
- the regulations of the professional associations
- the pertinent laws, standards, regulations and pro-
visions, e.g. DIN, EN, DVGW, VDI and VDE.
- Provisions of the local public utilities.

(C) IDM ENERGIESYSTEME GMBH Installation instructions TERRA AL 60 Max 7
General description
1.15. Intended use
For monovalent heating and cooling of detached,
semi-detached houses and commercial buildings
in appropriate climatic environments. The building
should be furnished with a low-temperature heating
(e.g. underfloor heating, wall heating, low-tempera-
ture radiator heating ...).
TERRAAL 60 Max heat pumps function with the safe-
ty refrigerant R410A which, if in the event of a proper
assembly and installation circulates in a closed cir-
cuit, represents practically no environmental impact.
1.16. Scope of delivery
- 2 x suction gas cooled scroll capsule compressors
- 2 x electronic expansion valves
- 2 x Finned tube Al/Cu evaporator package
- 2 x Speed-controlled axial fan
- copper-welded stainless steel plate heat exchanger
as condenser
- 2 x switching valve for cooling or defrosting
- 2 x initial current limiter with rotary field monitoring
- Refrigerant collection and dehydration
- 2 x compressor heating
- 2 x pressure sensors for high and low-pressure
monitoring
- 2 x cartridge pressure control switch for high-
pressure monitoring
- 2 x condensate bin and drain tube (2 m)
- 2 x condensate outlet heating
- 2 x compressor-heatings
- heat and sound-insulated cover panels
- sensor package (for one heating circle, Hygienik,
heating buffer, cooling buffer, outdoor)
- flow switch
- non-return valve
- filter ball valve (supplied loose)
- electrical cabinet including control unit for interior
installation with 7” touchdisplay
- network connector for myiDM integration
1.17. Accessories
see iDM price list

(C) IDM ENERGIESYSTEME GMBH
2
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
8
Dimensions HxWxD [mm] 1500x3270x920
weigth [kg] 880
refrigerant side [kg] 570
evaporator side [kg] 310
570 kg 310 kg
1500
535 920
900
3270
560
696
654 56
190
Dimensions HxWxD [mm] 654x560x190
weigth [kg]
Technical data
2. Technical data
2.1. Dimensions TERRA AL 60 Max
2.2. Dimensions electrical cabinet
front view (air outlet) side view
rear view (air inlet)

(C) IDM ENERGIESYSTEME GMBH Installation instructions TERRA AL 60 Max 9
Technical data
Heat pump type TERRA AL 60 Max
Energy efficiency class
35 °C 55 °C
Performance data heating unit
Heating capacity at A2°C/W35°C kW 58.25
Heating capacity at A7°C/W35°C kW 74.75
Heating capacity at A-7°C/W35°C kW 48.49
Heating capacity at A2°C/W35°C (1 Verdichter) kW 29.03
Heating capacity at A7°C/W35°C (1 Verdichter) kW 37.27
Power consumtion at A2°C/W35°C kW 16.55
Power consumtion at A7°C/W35°C kW 16.87
Power consumtion at A-7°C/W35°C kW 16.84
Power consumtion at A2°C/W35°C (1 compressor) kW 8.29
Power consumtion at A7°C/W35°C (1 compressor) kW 8.45
COP at A2°C/W35°C - 3.52
COP at A7°C/W35°C - 4.43
COP at A-7°C/W35°C - 2.88
COP at A2°C/W35°C (1 compressor) - 3.50
COP at A7°C/W35°C (1 compressor) - 4.41
Performace data cooling
Cooling capacity at A35°C/W18°C kW 70.52
Cooling capacity at A35°C/W7°C kW 49.20
Cooling capacity at A35°C/W18°C (1 compressor) kW 35.05
Power consumtion at A35°C/W18°C kW 21.31
Power consumtion at A35°C/W7°C kW 20.85
Power consumtion at A35°C/W18°C (1 Verdichter) kW 10.65
EER at A35°C/W18°C - 3.31
EER at A35°C/W7°C - 2.36
EER at A35°C/W18°C (1 compressor) - 3.29
Detailed data according the energy efficiency are shown in the appendix.
Heat pump type TERRA AL 60 Max
Sound data according EN 12102 1unit
Sound power level (full load) dB(A) 80
Sound power level (part load) dB(A) 77
Noise-reduced operation full load dB(A) 78
The sound pressure level can be calculated with the iDM-sound calculation tool
1 Uncertainty of measurement ± 1,5 dB(A)
2.3. Technical data
A+ A+

(C) IDM ENERGIESYSTEME GMBH
2
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
10
Technical data
Hydraulic and refrigerant data unit TERRA AL 60 Max
Maximum flow temperature2°C 62
Nominal flow rate heating water ( A7 °C /W35 °C, ∆T=5 K ) m³/h 12.90
Flow rate heating water ( A7 °C /W55 °C, ∆T=8 K ) m³/h 7.30
Loading pump, available as accessorier
(up to 15 m one direction) Wilo Stratos 50/1-9
Free residual pressure loading pump at nominal flow rate kPa 47.8
Pressure loss heating side at nominal flow rate kPa 24.4
Flow- and return connections heating side R 2“ AG
Condensate run-off connection mm Ø 35
Maximum operating pressure heating side bar 3
Nominal air flow rate (A7°C/W35°C m³/h 2 x 11,000
Number of compressors 2
Number of refrigerant circles 2
Refrigerant R410A (GWP12088)
Quantity of refrigerant 1 kg 2 x 17.80
GWP31924
Quantity of compressor oil
(Emkarate (TM) TL32HB-160SZ-160Z) lt. 2 x 3.3
1
TERRA AL Max heat pumps work with the by the Kyoto protocol detected safety refrigerant R410A, with a global warming potential of 2088.
2
The 62°C refers to the max. heat pump flow temperature. The resulting lower hot water temperature must be checked in relation to compliance with the drinking water.
3
GWP value according to 5th IPCC Assessment Report
Electrical data unit TERRA AL 60 Max
Electrical power supply compressor/fan V/Hz 3~ 400/50
Electrical power supply heating element (on site) V/Hz 3~ 400/50
Electrical power supply controller V/Hz 1~ 230/50
Initial current (one compressor) A 54.40
Oparating current compressor A 2 x 21.61
Maximum operating current fan A 2 x 1.45
Maximum power consumption fan kW 2 x 0.84
Fuse main power supply compressor/fan A C/K 63
Fuse control supply A B/Z 13
Fuse heating element up to 9 kW (on site) A B/Z 13
Prodection class outdoor unit - IP 44
Prodection class indoor unit - IP 20

(C) IDM ENERGIESYSTEME GMBH
3
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
11
Ϭ
ϭϬ
ϮϬ
ϯϬ
ϰϬ
ϱϬ
ϲϬ
ϳϬ
ϴϬ
ϵϬ
ϭϬϬ
ͲϮϬ Ͳϭϱ ͲϭϬ Ͳϱ Ϭ ϱ ϭϬ ϭϱ ϮϬ
ß
tϯϱ
tϰϱ
tϱϱ
tϲϮ
Ϭ
ϭϬ
ϮϬ
ϯϬ
ϰϬ
ϱϬ
ϲϬ
ͲϮϬ Ͳϭϱ ͲϭϬ Ͳϱ Ϭ ϱ ϭϬ ϭϱ ϮϬ
tϯϱ
tϰϱ
tϱϱ
tϲϮ
Dimensioning
3.2. Heat output at different flow temperatures and partial load (1-stage)
3. Dimensioning
outdoor temperature [°C]
3.1. Heat output at different flow temperatures and full power (2-stages)
heat output [kW]
heat output [kW]
outdoor temperature [°C]

(C) IDM ENERGIESYSTEME GMBH Installation instructions TERRA AL 60 Max 12
If the outside temperatures are below or above of the application range, the heat pump switches
off. If a bivalence exists and is configured in the navigator, bivalence mode will start.
-20 -15 -10 -5 0 5 10 15 20 25 30 35
20
25
30
35
40
45
50
55
60
10
[°C]
[°C]
40 45
62
R410A
g
outdoor temperature
flow temperature
0 5 101520253035404550
4
6
8
10
12
14
16
18
20
2
[°C]
[°C]
R410A
0
flow temperature
outdoor temperature
Dimensioning
3.3. Limitation of use - Heating
3.4. Limitation of use - Cooling

(C) IDM Energiesysteme GmbH
4.
General description
Installation instructions TERRA AL 60 Max
13
In order to avoid damage, caused by ani-
mals such as rodents or insects, all cable
and pipe openings have to be closed.
4.
4
.
4.
Dimensions
G
e
n
er
a
l de
sGeneral des
4. Placement and Installation
4.1. Installation instructions
The TERRA AL 60 Max is only designed for exterior
installation. Special actions has to be set for frost
protections.
Despite the possibility of speed reduction, the heat
pump should not be positioned adjacent to a living
room or bedroom. The relevant installation guide-
lines conforming to EN 378, for example, must be
observed.
4.2. Customer preparation
Foundation:
The foundation should be level and stable. A base
can be provided by the customer or a paving slab can
be laid on a gravel base. The air source heat pump
should be positioned slightly higher than the immedi-
ate site profile (minimum 200 mm).
If vibrations of the heat pump are transmitted via
floors, ceilings, walls or other solids, this is referred to
as structure-borne noise.
To avoid this noise inside buildings or structure-borne
noise transmission, the heat pump has to be de-
coupled from the building. e.g. installation on a roof.
Space requirements:
The heat pump must be positioned so that there
is sufficient space for air intake and air outlet (see
minimum distances for exterior installation). It should
not be possible for the inlet and exhaust air openings
to become blocked by snow, leaves, etc. Installation
in wall niches is to be avoided.
Inlet air:
The inlet air must be free of impurities such as sand
and caustic materials such as ammonia, sulphur,
chlorine, etc.
4.3. Condensation run-off
Air source heat pumps generate condensed water
when in operation. Per defrosting cycle, i.e. within 2
minutes up to 15 lt. of condensate can accumulate.
The condensation outlet should be conveyed into the
waste water channel by using the appropriate pipe
diameter for the machine.
The condensate must be able to run of also at tem-
peratures below 0 °C. The easiest way to guarantee
is by using the mounted heating cable, aktivated by
the Navigator control.
4.4. Heating connections
The heating connections must be installed with the
flexible hoses which are available as accessories.
These hoses are factory insulated.
In general, all lines outdoors should be kept as short
as possible. All pipes and wall openings must be pro-
fessionally heat-insulated and frost-protected during
installation.
4.5. Air outlet
On the air outlet exists an increased risk of frost. Rain
pipes, water-carrying pipes or water-carrying contain-
ers must not be located next to the outlet side.

(C) IDM Energiesysteme GmbH
4
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
14
2: Spherical spreading into 1/4 space
(installation next to facade)
1: Spherical spreading into 1/2 space
(free standing installation)
Placement and Installation
4.6. Acoustic evaluation
Sound-power-level
The sound power is the sound energy per second
emitted of a noise source. The sound power level is
specific to the source of sound, independent of dis-
tance and direction and enables an easy comparison
of different sound emitting devices. The sound power
can only be determined via mathematical calculation
according to international standards of the series
ISO 3740 - based on sound pressure level measure-
ments - as well as ISO 9614, which is based on the
measurement of sound intensity. The sound power
level of the heat pumps can be found in the technical
specifications.
Sound-pressure-level
In contrast to the sound power level, the sound pres-
sure level, which is caused by a noise source can be
measured. The measured sound pressure is depen-
dent on the distance from the noise source and the
receiver location (geometrical divergence) as well as
the local conditions. As the sound pressure level is a
measure of the loudness of noise sensed by humans,
the legislation defines limit values, that must not be
exceeded.
Sound-propagation-outdoor
With increasing distance from a point noise source,
the sound power is distributed on an increasing area
due to spherical spreading. Therefore, the sound
pressure level is continuously decreasing with in-
creasing distance from the noise source to receiver
location. Doubling the distance leads to a reduction of
the sound pressure level of 6 dB(A). Besides the di-
stance from the installation site of the heat pump the
sound, the installation situation and local conditions
also have significant impact on the resulting sound
pressure level at the relevant place of immission.
Major factors of influence are:
• sound attenuation by massive barriers e.g. buil-
dings, walls or different terrain.
• reflection on acoustically hard ground e.g. glass
facade and stone surfaces
• attenuation due to sound absorbing porous sur-
faces e.g. grass, trees
• reinforcement/reduction of by wind speed/direction
Noise-Immission
The noise caused by an source at a certain place is
expressed as Immission, the corresponding sound
pressure level is called Immission level.The immissi-
on level at the relevant place of immission can either
be determined by measurements or calculation e.g.
forecasting method according „TA Lärm“ (German
Noise Prevention Code) especially, which is espe-
cially useful at the stage of planning. According to this
method of calculation, the expected sound pressure
level is calculated on the basis of the sound power
level of the heat pump, the distance of the heat pump
to the receiver location and the installation situation
(directivity correction Dc) of the relevant place of
immission according the following formula:
LWAeq = mean A-weighted sound pressure level [dB]
DC= directionality correction [-]
Sm= distance from noise source to receiver
location [m]
The following figures show the different installation
situations of heat pumps and the corresponding di-
rectivity correction.

(C) IDM Energiesysteme GmbH Installation instructions TERRA AL 60 Max 15
3: Spherical spreading into 1/8 space:
Placement and Installation
Relevant place of Immission .
The sound immission have to be determined 0.5 m
in the middle in front of the open window (outside the
building) of the most affected rooms, which need par-
ticular protection. According DIN 4109:1989 rooms
needing particular protection are:
• living- and bed rooms
• children rooms
• work spaces/offices
• classrooms/seminar rooms
Rating level Lr .
The rating level corresponds to an equivalent conti-
nuous sound pressure level associated with a specific
period. The rating level is determined for both rating
periods „day“ (6am-10pm) and „night“ (10pm-6am)
separately. The operation time of the heat pump has
particular impact on the resulting equivalent conti-
nuous sound pressure level. Reducing the operation
time from 16 h per day to 4 h per day the rating level
is reduced by 6 dB(A).
But the equivalent continuous sound pressure level
alone is not sufficient in order to determine the distur-
bing effect of noise. In general noise is perceived very
disruptive, if individual tones are clearly discernable
or the noise is irregular (impulsiveness). These noise
characteristics will be taken into account by applying
a surcharge. Additionally, daytimes with increased
sensitivity are taken into consideration. According the
„TA Lärm“ the following corrections are applied:
information incorporation 0.3 or 6 dB
impulsiveness 0.3 or 6 dB
daytimes with increased
sensitivity 6 dB
The rating level Lr shall be obtained by summing the
calculated immission level and the applied correc-
tions of the specific periods.
Finally, the determined rating level can be compared
with legal limit values (e.g. „TA Lärm“).
Standard Immission Values (SIV) - relevant place of
immission outside the building:
Territory SIV-day SIV-night
Industrial area 70 dB(A) 70 dB(A)
business park,
commercial areas 65 dB(A) 50 dB(A)
village areas and mixed
areas 60 dB(A 45 dB(A)
settlement area 55 dB(A) 40 dB(A)
residential area 50 dB(A) 35 dB(A)
spa area, hospitals 45 dB(A) 35 dB(A)
In case of sound propagation inside buildings or
structure-borne sound transmission the Standard
Immission Values for the rating level of rooms
needing particular protection are as following:
SIV - day: 35 dB(A)
SIV - night: 25 dB(A)
For the calculation of the rating level according „TA
Lärm“ a calculation tool is provided at the homepage:
http://www.idm-energie.com
Tips for the installation of heat pumps
• Sound reflections areas should be kept as low as
possible
• The installation on acoustically hard ground and
areas with depression in the terrain should be
avoided
• The distance from the heat pump and the relevant
place of immission should be as big as possible
• In case of outdoor installation the blow out of air
in direction to the neighbour or relevant receiver
location should be avoided
• The airflow should not be blown directly against
walls as sound reflections lead to increased sound
pressure levels accordingly.

(C) IDM Energiesysteme GmbH
4
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
16
During transport pay attention to the focus! On the heatpump you find stickers marking the
focus.
focus
Placement and Installation
4.7. Transport
IWhen placing the heat-pump on site, the transportation crate must not be removed. The heat pump can be
placed by forklift or crane to the concrete base. When the heat pump is located on its final site, the crate may
be removed.

(C) IDM Energiesysteme GmbH Installation instructions TERRA AL 60 Max 17
Placement and Installation
4.8. Placing the heat-pump on site
When the heat pump is loacated on its final site, the crate can be removed. The standing feet are turned up-
wards, and the pallet is removed. Subsequently, the heat pump must be leveled.
The heat pump must be leveled by the 4 base feet (100 mm).

(C) IDM Energiesysteme GmbH
4
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
18
3040
106
118
720
183 312
163
130
1354
606
55
90
Placement and Installation
4.9. Foundation construction
The ground must be a firm and level surface. It is possible to install concrete bases or other good bearing
components. The load capacity must be guaranteed.
The air source heat pump have to be positioned at least 20 cm higher the the surrounnding area.
If the base is lower than the expected snow level, the suction must be kept free of snow snowfall.
The maximum length of the hydraulic interconnections between Hygienik or heating buffer and
heat pump must not exceed 35 m. Please note when planing the position of the concrete base.
The charging pump must be dimensioned accordingly.
The condensation run offand the hydraulic and electric connections are located on the rear
(air inlet) of the heat pump.
Bottom view
2 x condensate run off
hydraulic and electrical
connections
air inlet
(evaporator)
air outlet
(fan)
height adjustable
base feet (4 pcs.)

(C) IDM Energiesysteme GmbH Installation instructions TERRA AL 60 Max 19
925
3260
200200
2860
The ground must be a firm and level surface. It is possible to install concrete bases or other good
bearing components. The load capacity must be guaranteed.
Placement and Installation
Possible ground plan of the concrete base

(C) IDM Energiesysteme GmbH
4
.
G
e
n
eral descriptio
n
Installation instructions TERRA AL 60 Max
20
The minimum distances must be respected, because of the case of maintainance and to
prevent air-short-circuits.
view from above
suc
ti
on
suc
ti
on
e
xh
aust
e
xh
aust
win
d
d
ir
ec
ti
on
win
d
d
ir
ec
ti
on
min. 2000 mm
3270 mm
920 mm
min. 200 mm
min. 800 mm
min. 1000 mm
condensation outlet
heating side and electri-
cal connections
Placement and Installation
4.10. Wind direction
When installing in windy areas (eg on the roof), the orientation of the machine must be selected in such a way
that the expected wind direction is turned by 90 degrees to the suction/exhaust direction of the heatpump.
4.11. Decoupling from the building
The heat pump must be decoupled from the building in order to avoid structure borne noise. For example
when installing on a flat roof
4.12. Space requirements
In order to guarantee maintenguarantee maintenance and operation of the heat pump, following minimum
distance has to be observed (for operation and maintenance). By observing this distance an unobstructed
system maintenance and operation can be guaranteed.