Hoval RoofVent KH User manual

Hoval RoofVent®
KH | KC | KHC
Operating instructions
Hoval | Responsibility for energy and environment
Indoor Climate Systems
Original
operating manual
4 219 614-en-02
Title

Content
1 Use 3
1.1 Intended use. . . . . . . . . . . . . . . . . 3
1.2 User group . . . . . . . . . . . . . . . . . 3
2 Safety 4
2.1 Symbols . . . . . . . . . . . . . . . . . . 4
2.2 Operational safety . . . . . . . . . . . . . . 4
2.3 Decommissioning. . . . . . . . . . . . . . . 5
3 Construction and operation 6
3.1 Construction . . . . . . . . . . . . . . . . . 6
3.2 Function diagram . . . . . . . . . . . . . . . 8
3.3 Operating modes . . . . . . . . . . . . . . . 9
4 Type code 12
5 Technical data 14
5.1 Application limits . . . . . . . . . . . . . . 14
5.2 Heat recovery system (HRS) . . . . . . . . . 14
5.3 Air filtration . . . . . . . . . . . . . . . . 14
5.4 Electrical connection . . . . . . . . . . . . 15
5.5 Flow rate, product parameters . . . . . . . . . 15
5.6 Heat output . . . . . . . . . . . . . . . . 16
5.7 Cooling capacity . . . . . . . . . . . . . . 17
5.8 RoofVent®KH dimensions and weights . . . . . 18
5.9 RoofVent®KC dimensions and weights . . . . . 20
5.10 RoofVent®KHC dimensions and weights . . . . 22
6 Options 24
6.1 ColdClimate design . . . . . . . . . . . . . 24
6.2 Connection module . . . . . . . . . . . . . 25
6.3 Design with 2 Air-Injectors . . . . . . . . . . 25
6.4 Design without Air-Injector . . . . . . . . . . 25
6.5 Paint finish of below-roof unit . . . . . . . . . 25
6.6 Fresh air and exhaust air silencers . . . . . . . 26
6.7 Supply air and extract air silencers . . . . . . . 27
6.8 Mixing valve . . . . . . . . . . . . . . . . 27
6.9 Condensate pump . . . . . . . . . . . . . 27
6.10 Socket . . . . . . . . . . . . . . . . . 27
6.11 Energy monitoring . . . . . . . . . . . . . 28
6.12 Return temperature sensor . . . . . . . . . 28
6.13 Pump control . . . . . . . . . . . . . . . 28
7 Transport and installation 29
7.1 Scope of delivery . . . . . . . . . . . . . . 29
7.2 Storage. . . . . . . . . . . . . . . . . . 30
7.3 Requirements for the installation site . . . . . . 31
7.4 Installation . . . . . . . . . . . . . . . . 32
7.5 Connecting air ducts and Air-Injectors . . . . . . 37
7.6 Hydraulic installation . . . . . . . . . . . . 38
7.7 Condensate connection . . . . . . . . . . . 39
7.8 Electrical installation. . . . . . . . . . . . . 40
8 Operation 42
8.1 Initial commissioning . . . . . . . . . . . . 42
8.2 Checklist to prepare for commissioning: . . . . . 42
8.3 Operation . . . . . . . . . . . . . . . . . 43
9 Maintenance and repair 44
9.1 Safety . . . . . . . . . . . . . . . . . . 44
9.2 Maintenance. . . . . . . . . . . . . . . . 44
9.3 Repair . . . . . . . . . . . . . . . . . . 46
10 Dismantling 46
11 Disposal 47
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Content

1 Use
1.1 Intended use
RoofVent®units are supply and extract air handling units for heating and cooling
spaces up to 25 m in height with central heat and cold supply. They have the
following functions:
■Fresh air supply
■Extract air removal
■Heating (with connection to a hot water supply)
■Cooling (with connection to a water chiller)
– RoofVent®KC, KHC only
■Energy recovery with highly efficient plate heat exchanger
■Filtering of the fresh air and the extract air
■Air distribution and destratification with adjustable Air-Injector
A system usually consists of several RoofVent®units. These are installed
distributed throughout the hall roof. The individual units are regulated individually
and controlled based on zones. The system flexibly adjusts to local requirements.
Intended use also includes compliance with the operating instructions. Any usage
over and above this use is considered to be not as intended. The manufacturer
can accept no liability for damage resulting from improper use.
1.2 User group
The units are only allowed to be installed, operated and maintained by authorised
and instructed personnel who are well acquainted with the units and are informed
about possible dangers.
The operating instructions are for operating engineers as well as specialists in
building, heating and ventilation technology.
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Roof Vent ®KH | KC | KHC
Use
4 214 745-en-06

2 Safety
2.1 Symbols
Caution
This symbol warns against risk of injury. Please heed all instructions desig-
nated by this symbol to prevent injuries and/or death.
Attention
This symbol warns against property damage. Please heed the respective
instructions to prevent risk of damage to the unit and its functions.
Notice
This symbol denotes information about the economic use of the equipment
or special tips.
2.2 Operational safety
RoofVent®units are state-of-the-art design and are safe to operate. All control
and safety valves are checked at the factory. Nevertheless, hazards may emanate
from the units if they are used incorrectly or not used as intended. Therefore:
■The unit may only be installed, operated and serviced by authorised, trained
and instructed skilled personnel:
– Specialists as defined by these operating instructions are those persons
who, based on their training, knowledge and experience as well as their
knowledge of the relevant regulations and guidelines, can carry out the work
assigned to them and recognise potential hazards.
■Please read the operating instructions before unpacking, installing, commis-
sioning and before maintaining the equipment.
■Store the operating instructions so that they are easily accessible.
■Observe any attached information and warning signs.
■Immediately replace damaged or removed informational and warning signs.
■Follow the local safety and accident prevention regulations at all times.
■Observe the particular dangers involved in working on the roof and on electrical
systems.
■When working on the unit, objects (e.g. tools) could be dropped. Block off the
area underneath the unit.
■Do not attach additional loads to the unit.
■When working in the unit, take precautions against unprotected, sharp metal
edges.
■Observe the dangers involved when working on the hot water supply.
■Wear suitable protective equipment (helmet, gloves, mouth protection,
goggles).
■Following maintenance work, professionally reassemble all dismantled
protective devices.
■Ensure that all access doors are properly closed to prevent water entry through
the roof unit.
■Replacement parts must comply with the technical requirements of the system
manufacturer. Hoval recommends the use of original spare parts.
■Unauthorised reconfiguration or modification of the unit is not permitted.
■Shut down the unit immediately, if any defects are ascertained that limit the
operational safety.
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Roof Vent ®KH | KC | KHC
Safety
4 214 745-en-06

2.3 Decommissioning
■Disconnect the power supply with the main switch in the control panel.
Caution
The use of condensers can pose a danger of fatal injury from directly
touching live parts even after the unit is switched off. Only open the
access doors after waiting 3 minutes.
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Roof Vent ®KH | KC | KHC
Safety
4 214 745-en-06

3 Construction and operation
3.1 Construction
RoofVent®units consist of the following components:
■Roof unit with energy recovery
■Below-roof unit
1
2
a
b
d
c
■
1
Roof unit with energy recovery
■
2
Below-roof unit
aConnection module
bHeating section
(RoofVent®KH, KHC only)
cCooling section
(RoofVent®KC, KHC only)
dAir-Injector
Fig. 1: Components
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Roof Vent ®KH | KC | KHC
Construction and operation
4 214 745-en-06

■
1
Condensate separator
(RoofVent®KC, KHC only)
■
2
Cooling coil
(RoofVent®KC, KHC only)
■
3
Heating coil
(RoofVent®KH, KHC only)
■
4
Access panel, coil
■
5
Access panel, connection box
■
6
Supply air fan
■
7
Supply air access door
■
8
Control block
■
9
Exhaust air access door
■
10
Exhaust air fan
■
11
Plate heat exchanger with bypass
(for performance control and as
recirculation bypass)
■
12
Fresh air damper with actuator
■
13
Bypass damper with actuator
■
14
Fresh air filter
■
15
Fresh air access door
■
16
Extract air and recirculation dampers
with actuator
■
17
Extract air access door
■
18
Extract air filter
■
19
Extract air grille
■
20
Frost controller
■
21
Condensate connection
(RoofVent®KC, KHC only)
■
22
Actuator Air-Injector
Fig. 2: Construction
3
2
1
4
5
6
7
8
9
10 11 12 13 14
15
16
17
18
19
20
21
22
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Roof Vent ®KH | KC | KHC
Construction and operation
4 214 745-en-06

3.2 Function diagram
1
2
3
5
22
23
24
4
6
19
20
21
8
7
18
9
17
10
11
14
13
12
15
16
■
1
Fresh air
■
2
Fresh air filter with differential pressure switch
■
3
Temperature sensor air inlet ER (optional)
■
4
Fresh air damper with actuator
■
5
Bypass damper with actuator
■
6
Plate heat exchanger
■
7
De-icing switch for plate heat exchanger (only in ColdClimate design)
■
8
Temperature sensor air outlet ER (optional)
■
9
Supply air fan with flow rate monitoring
■
10
Heating coil (RoofVent®KH, KHC only)
■
11
Frost controller
■
12
Cooling coil (RoofVent®KC, KHC only)
■
13
Condensate separator (RoofVent®KC, KHC only)
■
14
Air-Injector with actuator
■
15
Supply air temperature sensor
■
16
Supply air
■
17
Extract air
■
18
Extract air filter with differential pressure switch
■
19
Extract air temperature sensor
■
20
Extract air damper with actuator
■
21
Recirculation damper (opposed to the extract air damper)
■
22
Exhaust air temperature sensor
■
23
Exhaust air fan with flow rate monitoring
■
24
Exhaust air
Fig. 3: RoofVent®function diagram
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Roof Vent ®KH | KC | KHC
Construction and operation
4 214 745-en-06

3.3 Operating modes
The units have the following operating modes:
■Ventilation
■Ventilation (reduced)
■Air quality
■Recirculation
■Exhaust air
■Supply air
■Standby
The TopTronic®C control system regulates these operating modes automatically
for each control zone in accordance with the specifications in the calendar. The
following points also apply:
■The operating mode of a control zone can be switched over manually.
■Each RoofVent®unit can operate individually in a local operating mode:
Off, Recirculation, Supply air, Exhaust air, Ventilation.
Code Operating mode Description
VE Ventilation
The unit blows fresh air into the room and exhausts polluted room
air. The room temperature set value day is active. Depending on the
temperature conditions, the system continuously controls:
■the energy recovery
■the heating/cooling
Supply air fan................... on 1)
Exhaust air fan................. on 1)
Energy recovery............... 0-100 %
Extract air damper............ open
Recirculation damper ....... closed
Heating/cooling ................ 0-100 %
1) Adjustable flow rate
VEL Ventilation (reduced)
As VE, but the unit only operates with the set minimum values for
the supply and exhaust air volumes
Supply air fan................... MIN
Exhaust air fan................. MIN
Energy recovery............... 0-100 %
Extract air damper............ open
Recirculation damper ....... closed
Heating/cooling ................ 0-100 %
AQ Air quality
This is the operating mode for demand-controlled ventilation of the
room. The room temperature set value day is active. Depending on
the temperature conditions, the system continuously controls:
■the energy recovery
■the heating/cooling
Depending on the room air quality or room air humidity, the system
operates in one of the following operating states:
AQ_REC ■Air quality Recirculation:
When air quality is good and air humidity appropriate, the unit
heats or cools in recirculation operation.
Like REC
AQ_ECO ■Air quality Mixed air:
When ventilation requirements are medium, the unit heats or
cools in mixed air operation. The supply and exhaust air volume
is based on the air quality.
Supply air fan................... MIN-MAX
Exhaust air fan................. MIN-MAX
Energy recovery............... 0-100 %
Extract air damper............ 50 %
Recirculation damper ....... 50 %
Heating/cooling ................ 0-100 %
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Roof Vent ®KH | KC | KHC
Construction and operation
4 214 745-en-06

Code Operating mode Description
AQ_VE ■Air quality Ventilation:
When ventilation requirements are high or the room air humidity
is too high, the unit heats or cools in pure ventilation operation.
The supply and exhaust air volume is based on the air quality.
Supply air fan................... MIN-MAX
Exhaust air fan................. MIN-MAX
Energy recovery............... 0-100 %
Extract air damper............ open
Recirculation damper ....... closed
Heating/cooling ................ 0-100 %
REC Recirculation
On/Off recirculation operation with TempTronic algorithm: During
heat or cool demand, the unit draws in room air, heats or cools it and
blows it back into the room. The room temperature set value day is
active. The flow rate is controlled in 2 stages.
Supply air fan................... 0 / MIN / MAX 1)
Exhaust air fan................. off
Energy recovery............... 0 %
Extract air damper............ closed
Recirculation damper ....... open
Heating/cooling ................ on 1)
1) Depending on heat or cool demand
DES ■Destratification:
To avoid heat build-up under the ceiling, it may be appropriate
to switch on the fan when there is no heat demand (either in
permanent operation or in on/off operation depending on the
temperature stratification, as desired).
EA Exhaust air
The unit extracts spent room air. There is no room temperature
control. Unfiltered fresh air enters the room through open windows
and doors or another system provides air supply.
Supply air fan................... off
Exhaust air fan................. on 1)
Energy recovery............... 0 %
Extract air damper............ open
Recirculation damper ....... closed
Heating/cooling ................ off
1) Adjustable flow rate
SA Supply air
The unit blows fresh air into the room. The room temperature set
value day is active. Depending on the temperature conditions, the
system controls the heating/cooling. Spent room air passes through
open windows and doors or another system provides extraction.
Supply air fan................... on 1)
Exhaust air fan................. off
Energy recovery............... 0 % 2)
Extract air damper............ open
Recirculation damper ....... closed
Heating/cooling ................ 0-100 %
1) Adjustable flow rate
2) Fresh air and bypass dampers are open
ST Standby
The unit is ready for operation. The following operating modes are
activated if required:
CPR ■Cooling protection:
If the room temperature drops below the set value for cooling
protection, the unit heats up the room in recirculation operation.
Supply air fan................... MAX
Exhaust air fan................. off
Energy recovery............... 0 %
Extract air damper............ closed
Recirculation damper ....... open
Heating/cooling ................ on
OPR ■Overheating protection:
If the room temperature rises above the set value for overheating
protection, the unit cools down the room in recirculation oper-
ation. If the temperatures also permit fresh air cooling, the unit
automatically switches to night cooling (NCS) to save energy.
NCS ■Night cooling:
If the room temperature exceeds the set value for night cooling
and the current fresh air temperature permits it, the unit blows
cool fresh air into the room and extracts warmer room air.
Supply air fan................... on 1)
Exhaust air fan................. on 1)
Energy recovery............... 0 %
Extract air damper............ open
Recirculation damper ....... closed
Heating/cooling ................ off
1) Adjustable flow rate
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Roof Vent ®KH | KC | KHC
Construction and operation
4 214 745-en-06

Code Operating mode Description
L_OFF Off (local operating mode)
The unit is switched off. Frost protection remains active.
Supply air fan................... off
Exhaust air fan................. off
Energy recovery............... 0 %
Extract air damper............ closed
Recirculation damper ....... open
Heating/cooling ................ off
–Forced heating
The unit draws in room air, warms it and blows it back into the room.
For example, forced heating is suitable for heating the hall before
taking the control system into operation or if the controller fails
during the heating period. Connecting a room thermostat makes it
possible to specify a room temperature set value.
Forced heating can be activated and set as required by the Hoval
service technician.
Supply air fan................... MAX
Exhaust air fan................. off
Energy recovery............... 0 %
Extract air damper............ closed
Recirculation damper ....... open
Heating/cooling ................ on
Table 1: Operating modes of RoofVent®units (heating and cooling vary depending on unit type)
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Roof Vent ®KH | KC | KHC
Construction and operation
4 214 745-en-06

4 Type code
KH - 9 B C - K1 /ST .-- /V0 .D1 . LU /AF .SI / M . KP .-- .SD /TC .EM .PH .RF
Unit type
KH Unit with heating section
KC Unit with heating/cooling section
KHC Unit with heating and cooling section
Unit size
6Size 6
9Size 9
Heating section
-without heating section
Awith coil type A
Bwith coil type B
Cwith coil type C
Heating/cooling section
-without heating/cooling section
Cwith coil type C
Dwith coil type D
Heat recovery
K1 Temperature efficiency 57 %
Design
ST Standard
CC ColdClimate design
Reserve
Connection module
V0 Standard
V1 Length + 250 mm
V2 Length + 500 mm
V3 Length + 1000 mm
Air outlet
D1 Design with 1 Air-Injector
D2 Design with 2 Air-Injectors
D0 Design without Air-Injector
Paint finish
-without
LU Paint finish of below-roof unit
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Roof Vent ®KH | KC | KHC
Type code
4 214 745-en-06

KH - 9 B C - K1 /ST .-- /V0 .D1 . LU /AF .SI / M . KP .-- .SD /TC .EM .PH .RF
Silencers outside
-without
AF Fresh air and exhaust air silencer
Silencers inside
-without
SI Supply air and extract air silencer
Hydraulics
-without
MMixing valve
Condensate pump
-without
KP Condensate pump
Reserve
Socket
-without
SD Socket in the unit
Control system
TC TopTronic®C
FR Control block without controller
Energy monitoring
-without
EM Energy monitoring
Pump control
-without
PH Heating pump
PK Heating or cooling pump
PP Heating pump and cooling pump
Return temperature sensor
-without
RF Return temperature sensor
Table 2: Type code
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Roof Vent ®KH | KC | KHC
Type code
4 214 745-en-06

5 Technical data
5.1 Application limits
Fresh air temperature min. °C – 30
Extract air temperature max. °C 40
Moisture content of extract air max. g/kg 15
Units in ColdClimate design:
Fresh air temperature min. °C -40
Extract air temperature max. °C 40
Extract air relative humidity max. %rh 40
Moisture content of extract air max. g/kg 4
Supply air temperature max. °C 60
Temperature of the heating medium 1) max. °C 90
Pressure of the heating/cooling medium max. kPa 800
Air flow rate Size 6:
Size 9:
min.
min.
m³/h
m³/h
3100
5000
Condensate quantity Size 6:
Size 9:
max.
max.
kg/h
kg/h
90
150
1) Design for higher temperatures on request
Table 3: Application limits
Notice
The increase of moisture content in the room is limited to a
maximum of 2 g/kg.
5.2 Heat recovery system (HRS)
Unit size 6 9
Temperature efficiency, dry %57 57
Temperature efficiency, wet %61 64
Table 4: Thermal transfer level of the plate heat exchanger
5.3 Air filtration
Filter Fresh air Extract air
Class acc. to ISO 16890 ISO coarse 55% ISO coarse 55%
Class acc. to EN 779 G4 G4
Factory setting of differential pressure switches 250 Pa 300 Pa
Table 5: Air filtration
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Technical data
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5.4 Electrical connection
Unit type KH-6 KH-9 KC-6 KC-9 KHC-6 KHC-9
Supply voltage V AC 3 × 400 3 × 400 3 × 400 3 × 400 3 × 400 3 × 400
Permitted voltage tolerance %± 5 ± 5 ± 5 ± 5 ± 5 ± 5
Frequency Hz 50 50 50 50 50 50
Connected load kW 6.88 10.68 6.98 10.78 7.18 10.98
Current consumption max. A11.67 17.67 11.67 17.67 12.02 18.02
Series fuse A13 20 13 20 13 20
Table 6: Electrical connection
5.5 Flow rate, product parameters
Unit type KH-6 KH-9
Nominal air flow rate m³/h 7500 11000
m³/s 2.08 3.06
Floor area covered m² 727 1283
Static efficiency of the fans %73.4 68.7
Coil type A B C A B C
Nominal external pressure
Supply air Pa 290 260 190 170 150 80
Extract air Pa 170 170 170 70 70 70
Effective electric power input kW 3.84 3.91 4.08 7.02 7.09 7.33
Unit type KC-6 KC-9
Nominal air flow rate m³/h 7000 10500
m³/s 1.94 2.92
Floor area covered m² 661 1194
Static efficiency of the fans %73.4 68.7
Coil type CCD
Nominal external pressure
Supply air Pa 340 180 130
Extract air Pa 390 250 250
Effective electric power input kW 3.47 6.71 6.88
Unit type KHC-6 KHC-9
Nominal air flow rate m³/h 7000 10500
m³/s 1.94 2.92
Floor area covered m² 661 1194
Static efficiency of the fans %73.4 68.7
Coil type AC BC CC AC AD BC BD CC CD
Nominal external pressure
Supply air Pa 310 280 230 140 90 120 70 60 10
Extract air Pa 390 390 390 250 250 250 250 250 250
Effective electric power input kW 3.54 3.61 3.72 6.84 7.02 6.91 7.09 7.12 7.30
Table 7: Technical data
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Roof Vent ®KH | KC | KHC
Technical data
4 214 745-en-06

5.6 Heat output
Fresh air temp. -15 °C
Size Type Q QTG Hmax tS∆pWmW
kW kW m°C kPa l/h
KH-6
A46.0 13.7 25.0 23.4 12 1974
B67.2 34.9 18.9 31.8 23 2885
C110.2 78.0 13.0 48.9 28 4736
KH-9
A87.2 39.9 22.1 28.8 15 3748
B102.3 54.9 19.0 32.8 20 4393
C171.1 123.8 13.0 51.4 30 7531
KC-6 C105.4 75.3 12.0 50.0 26 4530
KC-9 C166.9 121.7 12.3 52.4 29 7171
D ––––––
KHC-6
A44.6 14.5 25.0 24.2 12 1918
B64.5 34.4 17.3 32.6 21 2772
C105.4 75.3 12.0 50.0 26 4530
KHC-9
A77.3 32.1 23.0 27.1 13 3321
B99.6 54.4 17.9 33.4 20 4280
C166.9 121.7 12.3 52.4 29 7171
Legend: Type = Type of coil
Q = Coil heat output
QTG = Output to cover fabric heat losses
Hmax = Maximum mounting height
tS= Supply air temperature
∆pW= Water pressure drop
mW= Water quantity
Reference: Heating medium: 80/60 °C
Room air: 18 °C
Extract air: 20 °C / 20 % rel. humidity
– These operating conditions are not permissible, because the maximum supply air temperature of 60 °C is exceeded.
Table 8: RoofVent®KH / KC / KHC heat output
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Roof Vent ®KH | KC | KHC
Technical data
4 214 745-en-06

5.7 Cooling capacity
Size Type Qsen Qtot QTG tS∆pWmWmCQsen Qtot QTG tS∆pWmWmC
kW kW kW °C kPa l/h kg/h kW kW kW °C kPa l/h kg/h
Fresh air conditions 32 °C / 40 % 32 °C / 60 %
KC-6
KHC-6 C29.2 42.1 20.4 17.3 56 6022 18.9 26.6 56.4 17.9 18.4 101 8073 43.7
KC-9
KHC-9
C46.0 66.3 32.8 16.7 61 9493 29.8 42.0 87.7 28.8 17.8 107 12560 67.2
D56.2 84.3 43.1 13.8 58 12065 41.2 52.5 112.5 39.3 14.9 104 16113 88.3
Legend: Type = Type of coil
Qsen = Sensible cooling capacity
Qtot = Total cooling capacity
QTG = Output for coverage of transmission sensible gains
(→ sensible cooling load)
tS= Supply air temperature
∆pW= Water pressure drop
mW= Water quantity
mC= Condensate quantity
Reference: Cooling medium: 6/12 °C
Room air: 26 °C
Extract air: 28 °C / 50 % rel. humidity
Table 9: RoofVent®KC / KHC cooling capacity
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Roof Vent ®KH | KC | KHC
Technical data
4 214 745-en-06

5.8 RoofVent®KH dimensions and weights
2380
1950
47
2080
200
310
200
77
A
B
G
D
W
HS
C
E
F
K
J
I
T
U
V
L
1
2
34
5
6
78
■
1
Roof unit with energy recovery
■
2
Connection module
■
3
Coil access panel
■
4
Connection box access panel
■
5
Heating section
■
6
Air-Injector
■
7
Return
■
8
Flow
Fig. 4: RoofVent®KH dimensional drawing (dimensions in mm)
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Roof Vent ®KH | KC | KHC
Technical data
4 214 745-en-06

Unit type KH-6 KH-9
Amm 1400 1750
Bmm 1040 1240
Cmm 848 1048
Fmm 410 450
Gmm 470 670
Hmm 270 300
Smm 490 570
Tmm 500 630
Umm 767 937
Vmm 900 1100
Connection module V0 V1 V2 V3 V0 V1 V2 V3
Dmm 940 1190 1440 1940 980 1230 1480 1980
Emm 530 780 1030 1530 530 780 1030 1530
Wmm 1700 1950 2200 2700 1850 2100 2350 2850
Table 10: RoofVent®KH dimensions
Unit type KH-6A KH-6B KH-6C KH-9A KH-9B KH-9C
Imm 78 78 78 78 78 78
Jmm 101 101 101 111 111 111
Kmm 758 758 758 882 882 882
L (internal thread) "Rp 1¼ Rp 1¼ Rp 1¼ Rp 1½ Rp 1½ Rp 1½
Water content of the coil l4.6 4.6 7.9 7.4 7.4 12.4
Table 11: Dimensions for hydraulic connection
Unit type KH-6A KH-6B KH-6C KH-9A KH-9B KH-9C
Total kg 709 709 716 895 895 905
Roof unit kg 567 567 567 701 701 701
Below-roof unit kg 142 142 149 194 194 204
Air-Injector kg 37 37 37 56 56 56
Heating section kg 30 30 37 44 44 54
Connection module V0 kg 75 94
Additional weight V1 kg + 11 + 13
Additional weight V2 kg + 22 + 26
Additional weight V3 kg + 44 + 52
Table 12: RoofVent®KH weights
19
Roof Vent ®KH | KC | KHC
Technical data
4 214 745-en-06

5.9 RoofVent®KC dimensions and weights
A
2380
47
1950
2080
200
310
200
77
80
G
D
MS
W
C
E
F
O
N
R
PQ
T
U
V
B
1
2
34
5
6
78
9
■
1
Roof unit with energy recovery
■
2
Connection module
■
3
Coil access panel
■
4
Connection box access panel
■
5
Heating/cooling section
■
6
Air-Injector
■
7
Return
■
8
Flow
■
9
Condensate connection G1" (external)
Fig. 5: RoofVent®KC dimensional drawing (dimensions in mm)
20
Roof Vent ®KH | KC | KHC
Technical data
4 214 745-en-06