Dantherm HCV 300 User manual

HCV 300-400-460-500-700
MANUAL
en • Rev. 1.2 • 2021-W03-4

3
en
Table of contents
This manual covers the following topics:
Introduction .....................................................................4
About this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
USER MANUAL
Introduction .....................................................................6
Overview .............................................................................6
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Control panel - overview ..............................................................7
Main operating modes ................................................................8
Temporary modes (override). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maintenance and care .......................................................... 11
Inspection of the lter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Introduction ................................................................... 12
Overview ............................................................................12
Transport and unpacking ....................................................... 13
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Declaration of Conformity ............................................................14
Product description ............................................................ 15
General description ..................................................................15
Component descriptions .............................................................19
Accessories ..........................................................................21
Electronic control ....................................................................23
Control system strategy ..............................................................25
Installation Options ............................................................ 26
Switching between modes A and B ...................................................26
Use the bottom outlet (HCV 300/400/460) ............................................29
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Mounting the device .................................................................32
External connections .................................................................36
Calibration of airow .................................................................37
Maintenance and care .......................................................... 40
Preventive maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Troubleshooting .....................................................................43
Error list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Spare parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Appendix ...................................................................... 51
Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Illustrations ..........................................................................54
Cabinet dimensions ..................................................................55

4
Introduction: About this Manual
Introduction
About this Manual
This is the service manual for the Dantherm HCV product range, including residential ventila-
tion units HCV 300/400/460/500/700.
The manual contains information targetted at:
• Product users and
• professionals such as installers and service technicians
This manual is intended for both installers and users of the product.
Installation and repair of the unit must be carried out by qualied personnel only. It is the
responsibility of the installer to read and understand this service manual prior to initial start
and setup of the HCV unit. The warranty is limited to devices installed by trained personnel.
The USER MANUAL contains information that may be relevant to professional technicians
The INSTALLATION & SERVICE MANUAL is intended for trained personnel only.
Copying this service manual, or parts thereof, is not permitted without the prior written con-
sent of Dantherm.
Dantherm reserves the right to change and improve the product and service manual at any
time without prior notice or obligation.
Manual
Copyright
Reservations

5
Introduction: About this Manual
en
This manual uses the following abbreviations in connection with ventilation terminology.
Abbr. Description
T1 Outside air enters the unit
T2 Supply air from the unit into the home
T3 Extract air from home to unit
T4 Exhaust air from the unit
S1 Temperature sensor no 1
S2 Temperature sensor no 2
S3 Temperature sensor no 3
S4 Temperature sensor no 4
Mode A Indicates operating mode A. See more on page 17
Mode B Indicates operating mode B See more on page 17
G4 Standard air lter according to EN779; corresponds to ISO Coarse according to
ISO 16890
F7 Filter class (corresponds to ePM1 in accordance with ISO 16890), better than and
absorbs ner particles than G4 lter
BP Bypass damper
(makes it possible to supply fresh ltered air to the dwelling without heat recov-
ery in heat exchanger)
IP Unique address for Ethernet port.
DHCP Automatic setting of an Ethernet address supplied by an external network com-
ponent (if the device is connected to the Ethernet)
PC Personal computer running MS Windows
USB Universal serial bus connection
LAN Local area network
WAN Wide area network (Internet)
BMS Building Management System
PCB Printed Circuit Board
FFC Flat Flexible Cable
The following symbols are used in this manual to draw attention to hazards and
additional information of particular relevance.
Symbols Used
Warning
Caution
WARNING
This symbol used with the word "Warning", indicates a risk of serious
injury.
Warning
Caution
CAUTION
This symbol used with the word "Caution", indicates a risk of minor or
moderate injury or damage to property.
!NOTE
This symbol indicates further tips and information regarding the use
of the device.
The warning and caution symbols are described as follows:
Type and source of hazard
Further clarication, if applicable.
• Measures to remedy the hazard or immediate measures if the risk becomes acute are
described in this way
This unit is designed to have a long life. At the end of its useful life, the unit should be recy-
cled in accordance with national regulations, with particular regard to the protection of the
environment.
Abbreviations in
this manual
Symbols
this manual
Warning
Caution
WARNING
CAUTION
Recycling

6
USER MANUAL
Introduction: Overview
USER MANUAL
Introduction
Overview
This part of the manual, entitled the USER MANUAL, is intended for users of the product.
All instructions described in the INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
must be carried out by trained technicians.
This device is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, unless they are under supervision or have been instructed in
the use of the device by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Apart from replacing air lters and cleaning the system externally, all maintenance must be
carried out by trained personnel. .
It is important to know the correct operating procedure for the residential ventilation system
and all its safety measures. Dantherm accepts no liability with regard to lost business or per-
sonal injury as a result of non-compliance with safety measures.
Warning
Caution
WARNING
Target group
Safety precau-
tions

7
USER MANUAL
Operation: Control panel - overview
en
Operation
Control panel - overview
The membrane keypad has four buttons (two on the left side and two on the right side) with
corresponding LEDs underneath. An LED light with four levels indicating the fan speed is sit-
uated in the middle. It will always indicate the current fan speed regardless of the operating
mode.
This illustration shows an overview of the dierent modes (three main modes and three tem-
porary override modes) and other functions that can be displayed in the control panel and
activated via the buttons.
Temporary mode:
• Bypass (automatic/manual)
• Summer mode
Alarm reset:
• Check lter (orange)
• Fault alarm (red)
(see page 40 and 42)
Main mode:
Weekly program
• Demand-controlled mode
Main mode:
• Manual operation
Temporary mode:
• Woodburner mode
Fan speed level indicator
Fig. 1
Membrane keypad

8
USER MANUAL
Operation: Main operating modes
Main operating modes
Risk of water damage
• Never turn o the ventilation unit to save energy, as this may cause condensation and
subsequent leaks from the duct system, with the risk of water damage.
Decide which of the three main operating modes you want your HCV unit to run in and adjust
the settings as desired via Dantherm PC Tool, Dantherm Residentialapp or HRC3 remote con-
trol. Please note, however, that legislation may prescribe minimum levels of ventilation speed.
Check the fan speed manually. In manual operating mode, the ventilation unit will run at the
selected ventilation speed until this is changed manually.
Short press – activates manual operating mode. Each time the button
is pressed, the fan speed is increased by one level (level 0–4). After
level 4, the fan speed will start from level 0 again.
• NOTE: If the unit is running in manual operating mode - level 4 (fan boost)
will automatically return to level 3 (nominal mode) after four hours.
• The fan speed at level 0 can be locked via PC Tool. When level 0 is locked, the
fan speed will jump from level 4 to 1 as it increases.
Active manual operating mode is indicated by constant light in the correspond-
ing LED
When the week program is activated, the unit will automatically adjust the ventilation speed
according to a predened week schedule.
You can activate the week program via the control panel on the unit, but you cannot choose
which week program you want to run. Selection between the 11 weekly programs (10 set
programs + one adjustable in PC Tool) can only be done using the Danthermapp, the HRC3
remote control or a PC Tool.
Short press – activates the selected weekly program.
The active weekly program is indicated by a constant light in the corresponding
LED
Enable demand-controlled operation for automatic control of indoor air quality. This mode
uses readings from VOC, RH and/or CO2sensors to control the indoor air quality. It is therefore
necessary for the associated sensors to be connected during demand-controlled operation.
The CO2sensor can only be connected via an installed Accessory Controller (HAC).
Long press (ve seconds) - activates demand-controlled operation.
Active demand-controlled operation is indicated by a slow ashing light in the
corresponding LED
Warning
Caution
CAUTION
Introduction
Manual operation
Weekly program
Demand-
controlled mode

9
USER MANUAL
Operation: Temporary modes (override)
en
Temporary modes (override)
The temporary modes are activated manually, except for the automatic bypass, and will tem-
porarily override the settings for the selected main mode. The temporary modes are automat-
ically stopped by a timer, but they can also be deactivated manually (except for the automatic
bypass).
Bypass mode opens the bypass damper, which directs the airow around the heat exchanger.
The outdoor air will thus be supplied to the house without heat recovery. Bypass mode can
be activated in two ways:
• Automatic bypass
• Manual bypass
The automatic bypass opens/closes the bypass damper automatically when the conditions
for automatic bypass are met.
You can change the setpoints for min. outdoor temperature (Tmin) (default setting: 15°C) and
max. indoor temperature (Tmax) (default setting: 24°C) via PC Tool or the Dantherm HRC3re-
mote control.
If the conditions for automatic bypass are present, an open damper is indicated
by a constant light in the corresponding LED
!NOTE Mandatory conditions for allowing activation of automatic bypass:
• Outdoor air temperature is at least 2°C lower than the exhaust air temperature
• AND the outdoor temperature is higher than the setpoint (Tmin)
• AND the exhaust air temperature is higher than the set point (Tmax).
If one of the following conditions is met, the bypass will be deactivated:
• Outdoor air temperature is higher than the exhaust air temperature
• Outdoor air temperature is at least 2°C lower than setpoint (Tmin)
• Exhaust air temperature is at least 1 °C lower than setpoint (Tmax)
Energy wasting:
If the bypass temperature settings are set too low, there is a risk that the unit will
open the bypass while the central heating system in the house is active.
If bypass/cooling is desired and automatic bypass is not active, the bypass can be activated
manually.
The bypass will open if the conditions for manual bypass are met within the dened time
period (default setting is six hours). The time period can be changed via PC Tool.
Short press – activates/deactivates manual bypass mode.
Active bypass mode (open damper) is indicated by constant light in the corre-
sponding LED.
NOTE: If bypass mode is activated, but the conditions for open bypass damper
are not present, the activated bypass mode will not be visible from the LED.
!NOTE Mandatory conditions for allowing activation of manual bypass:
• Outdoor air temp. is min. 2°C lower than the exhaust air temperature.
• AND outdoor temp. is higher than setpoint (Tmin)
Introduction
Bypass mode
(cooling)
Automatic bypass
Manual bypass

10
USER MANUAL
Operation: Temporary modes (override)
When summer mode is active, this will stop the supply air fan and only the extract air fan will
be in operation. In this case, a fresh air supply can be ensured by opening windows, doors,
etc.
NOTE: Summer mode will be deactivated automatically when the outdoor temperature drops
below 14°C.
Long press (ve seconds) - activate/deactivate summer mode
Active summer mode is indicated by a ashing light in the corresponding LED
Activation of the woodburner mode can be used when you light up the stove. The unit will
then run with positive pressure for seven minutes to prevent smoke in the living room. If the
woodburner mode is not deactivated manually, it will automatically stop after seven minutes.
NOTE: The woodburning stove mode is only activated as long as the supply air temperature is
above 9°C.
Minimum outdoor air temperature?
Long press (ve seconds) - activates/deactivates woodburner mode.
Active woodburner mode is indicated by ashing in the three fan speed LEDs
Summer mode
Woodburner
mode

11
USER MANUAL
Maintenance and care: Inspection of the lter
en
Maintenance and care
Inspection of the lter
Preventive maintenance is necessary at regular intervals if the unit is to operate eciently
and optimally without unintended stoppages, and to ensure the expected service life of at
least 10 years.
It is important to notice that intervals between lter maintenance can vary according to the
specic environment, and that moving parts are wearing parts, and will need replacement
when worn.
The factory warranty only applies if it can be documented that regular preventive main-
tenance has been carried out as prescribed. The documentation can be a written logbook
containing a company stamp or equivalent.
Maintenance must as a minimum be carried out as shown here:
Interval Task To be carried out by:
Six
months
Check lters. Replace if necessary User
Annual Change lters User
Remove the upper part of the front cover.
The unit has a built-in timer for its lter alarm (every six months as standard). The timer period
for the lter alarm can be changed via the remote control or PC Tool, or it can be reset via the
alarm button
When the timer expires, a lter alarm is triggered. A buzzer will sound and the LED“!”will light
up orange. (If the LED lights up RED, please see Troubleshooting section on pagepage 42.
Press for 5
sec.
Resets the lter alarm when the alarm is triggered
Resets the lter timer without the timer having expired.
A short beep will sound, indicating that the lter alarm has been reset correctly.
Step Action Illustration
1 Remove the lters and inspect them after
the lter alarm has been triggered.
2 Even if only one lter is dirty, we recommend
replacing both lters to avoid imbalance in
the airow through the unit.
NOTE: Replace the lters at least once a year,
regardless of whether they are dirty or an
alarm has been triggered.
3 When the lters have been replaced, the
lter alarm must be reset by briey pressing
the alarm button.
A short beep will sound, indicating that the
lter alarm has been reset correctly.
Introduction
Summary of
intervals
Preparation for
inspection
Filters - alarm and
inspection
(6 months - 1 year)

12
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Introduction: Overview
INSTALLATION & SERVICE
MANUAL FOR PROFESSIONALS
Introduction
Overview
This part of the manual, titled INSTALLATION & SERVICE MANUAL, is intended for qualied
personnel only.
It is important to know the correct operating procedure for the residential ventilation system
and all its safety measures. Dantherm accepts no liability with regard to lost business or per-
sonal injury as a result of non-compliance with safety measures.
Risk of injury
• Installation and repair of the unit must be carried out by qualied personnel only.
• It is the responsibility of the installer to read and understand this service manual prior to
initial startup and setup of the HCV unit.
Risk of damage to equipment or property or personal injury
• The HCV MUST be earthed with cables WITH earth wire and an earthed power supply.
Risk of water damage
• Never turn o the ventilation unit to save energy, as this may cause condensation and
subsequent leaks from the duct system, with the risk of water damage.
Target group
Safety precautions
Warning
Caution
WARNING
Warning
Caution
WARNING
Warning
Caution
CAUTION

13
USER MANUAL
Transport and unpacking: Unpacking
en
Transport and unpacking
Unpacking
Step Action
1 Report any obvious damage to the carrier, packing company, postal service, etc.
immediately after delivery, and note the damage in the consignment or transport
documents.
2 Remove the packaging completely (without using a knife) and dispose of the mate-
rial according to local regulations.
3 Check the contents of the box:
4 If transport damage is detected after unpacking the device or if
the delivery is incomplete, contact the responsible sales representative or
specialised distributor immediately.
Scope of delivery:
Quan-
tity
Description Illustration
1 HCV Unit -
1 bag incl.
• 1 m water hose
• 1x water hose clip
1 bag incl.
• 2x spacers
• 1x wall rail
• 1 x vibration damper
1 bag incl.
• 1 x manual
• Labels, data sheets, etc.
• 1 x cable clamp
(HCV 400/460 only)
Installation manual
LABELS
LABELS
LABELS
Check for
transport damage
Content of the box

14
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Introduction: Declaration of Conformity
Declaration of Conformity
Dantherm hereby declares that the unit mentioned below:
No.: 352480 Type: HCV 400 P1, P2, E1, P1/E1, HCV 460 P2
No.: 352441, 352442, 352443 Type: HCV 300, HCV 500, HCV 700
– complies with the following directives:
2014/35/EU Low Voltage Directive
2014/30/EU EMC Directive
2014/53/EU Radio Equipment Directive
2009/125/EC Eco Design Directive
2011/65/EU RoHS Directive (Restriction of hazardous substances)
1907/2006/EC REACH Regulation
- and is manufactured in compliance with the following harmonized standards:
EN 60335-1:2012 Household and similar electrical appliances – Safety – Part 1
EN 60335-2-40:2003 Household and similar electrical appliances Safety - Part 2-40
EN 61000-3-2:2014 Electromagnetic compatibility (EMC) - Part 3-2
EN 61000-3-3:2013 Electromagnetic compatibility (EMC) - Part 3-3
EN 61000-6-2:2005 Electromagnetic compatibility (EMC) - Part 6-2
EN 61000-6-3:2007 Electromagnetic compatibility (EMC) - Part 6-3
EN 60730-1:2011 Automatic electrical controls for household and similar use – Part 1
EN 62233: 2008 Methods for measuring electromagnetic elds in household appliances
EN 55014-1:2006 Electromagnetic compatibility - Requirements for household appliances
- Part 1
EN 55014-2:1997 Electromagnetic compatibility - Requirements for household appliances
- Part 2
EN 301489-1 V1.9.2 Electromagnetic compatibility (EMC) standard for radio equipment and
services; Part 1
EN 301489-3 V1.6.1 Electromagnetic compatibility (EMC) standard for radio equipment and
services; Part 3
EN 300220-1 V2.4.1 Electromagnetic compatibility & Radio Spectrum Matters (ERM);
Short Range Devices
EN 300220-2 V3.1.1 Electromagnetic compatibility & Radio Spectrum Matters (ERM);
Short Range Devices
EN 13141-7:2010 Ventilation for buildings - performance testing of components/products
for residential ventilation
Skive, 13-11-2020
Product Manager Managing Director Jakob Bonde Jessen

15
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Product description: General description
en
Product description
General description
The HCV product range from Dantherm is a residential ventilation system designed to supply
homes with fresh and ltered air, and where the heat in the extract air is transferred to the
supply air without mixing the two airows.
This results in energy-ecient ventilation with low heat energy loss.
These units are designed to be installed in dry environments with temperatures >12°C, i.e.
utility rooms or similar heated rooms.
The airow direction can be changed electronically to allow the connected ducts to be rout-
ed either to the right or to the left.
This illustration shows the HCV 400/460 unit without cover.
Loc. Part Illustration
1 Control panel
1
3
2
4
56
7
8
2 Filter 1
3 Filter 2
4 Main PCB
5 Fan case 1
6 Fan case 2
7 Bypass
8 Heat exchanger
Fig. 2
Introduction
Product illustra-
tion
HCV 400/460

16
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Product description: General description
This illustration shows the HCV 300/500/700 unit without cover.
Loc. Part Illustration
1 Control panel
3
1
2
4
5
6
7
8
2 Filter 1
3 Filter 2
4 Main PCB
5 Fan case 1
6 Fan case 2
7 Bypass
8 Heat exchanger
Fig. 3
The HCV units are available in dierent variants. The functionality and installation of the vari-
ants are exactly the same. The variants only dier according to their heat exchanger and fan
or built-in accessories, which aects the performance of the unit.
This variant name is just an example (describing the syntax) and is not necessarily identical to
your HCV unit (see Fig. 4 for the exact variant name of your unit):
HCV 400 E1-A-BP-RH-PH
Loc. Description Options
1 Product name HCV 300
HCV 400
HCV 460
HCV 500
HCV 700
2 Heat exchanger ALU (aluminium)
P1 (plastic 1)
P2 (plastic 2)
P1/E1 (enthalpy) (P1 heat exchanger can be re-
placed by enthalpy heat exchanger)
3 Mode A/B (factory default) A
4 Equipped with bypass BP
5 Equipped with moisture sensor RH
6 Equipped with pre-heater PH (If this part is missing, the unit is not equipped
with a preheater)
Product illustra-
tion
HCV 300/500/700
Variant description
123 4 5 6

17
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Product description: General description
en
The product label showing the variant and serial number is located next to the USB
connection.
Fig. 4
This section shows the functions of the dierent parts in drain mode A/B. A is the default
mode.
Duct 1
Duct 2 Duct 4
Duct 3
Drain
mode A
Drain
mode B
Duct 5 Duct 6
Fig. 5
Part Mode A Mode B
Duct connection 1 (Fig. 5) Outdoor air - T1 Extract air - T3
Duct connection 2 (Fig. 5) Supply air - T2 Exhaust air - T4
Duct connection 3 (Fig. 5) Extract air - T3 Outdoor air - T1
Duct connection 4 (Fig. 5) Exhaust air - T4 Supply air - T2
Filter 1 (Fig. 3) Exhaust air lter G4 Supply air lter G4 or F7
Filter 2 (Fig. 3) Supply air lter G4 or F7 Exhaust air lter G4
Fan case 1 (Fig. 3) Extract air fan Supply air fan*
Fan case 2 (Fig. 3) Supply air fan* Extract air fan
* Supply fan case may be tted with an electrical preheater (option)
HCV 300 , 400 and 460 have additional ducts in the bottom (ducts 5 and 6) (Fig. 5) which
are closed by default but can be used as a bottom outlet for supply air (T2). The table below
shows which duct is used as the bottom outlet in mode A/B and which corresponding duct
can be closed at the top of the unit. Both ducts can be used simultaneously if desired.
Option for HCV 300/400/460 only:
Drain mode Bottom outlet Duct may be closed
Mode A Duct 5 Duct 2
Mode B Duct 6 Duct 4
Product label
Description of
drain mode A/B
Bottom outlet
in mode A/B

18
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Product description: General description
This illustration shows the two directions of airow through the unit. The airow direction can
be changed by changing the operating mode as described on page 26.
Pos. Mode A Mode B Illustration
AExtract air Outdoor air
BSupply air Exhaust air
CExhaust air Supply air
DOutdoor air Extract air
Fig. 6
Airow direction
in mode A/B
B
A
C
D

19
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Product description: Component descriptions
en
Component descriptions
This section describes the individual components of the HCV units included in the standard
delivery.
The external parts of the cabinet are made of powder-coated, AZ-coated iron sheet. The
internal parts of the cabinet are made of polystyrene (EPS). Accessories are installed after the
steel front and EPS doors have been removed. The cabinet is sound and heat insulated with
re retardant polystyrene foam. The unit is designed for installation in locations with ambient
temperatures ranging from 12°C to 50°C.
The unit is equipped with a class G4 cassette lter as standard. These lters protect the heat
exchanger and improve the indoor climate by ltering dust and other particles from the air.
An F7 lter (pollen lter) is available as an accessory. The F7 lter is always located on the
supply side - as shown at the top of the unit.
In the counter ow heat exchanger, heat energy is transferred from the extract air to the sup-
ply air, thus saving energy for heating
The supply fan passes fresh air from outside through the heat exchanger to the ventilated
rooms inside.
The extract air fan extracts vitiated humid air from the wet rooms in the home.
The motorised bypass damper overrides the heat exchanger functionality. It is used in
summer in warm conditions where the cooler outdoor air can be used to reduce the indoor
temperature when the indoor temperature exceeds an upper temperature limit.
The unit is equipped with two outlets for condensate.
One of these must be connected to the drain hose (1m drain hose is included in the delivery)
so that condensate can be led to a drain.
The correct connection to the condensate outlet is shown at the top of the unit and on page
33 of this service manual.
The unit is equipped with a wall bracket, for use when the unit is to be mounted on the wall.
The humidity sensor will continuously monitor the quality of the extract air and adjust the
airow accordingly. This mode of operation is called demand-controlled mode. If an HRC
Remote Control is connected, the level will be shown in the display using the Level 3 icon.
Demand-controlled operation will result in the correct ventilation level with the lowest possi-
ble electricity consumption.
The desired operating mode can be selected and changed via the membrane panel located
on the front of the unit.
Introduction
Cabinet
Filters
Heat exchanger
Fans
Bypass damper
Condensate drain
and drain hose
Wall bracket
Humidity sensor
Membrane panel

20
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Product description: Component descriptions
This illustration shows the HCV units' control section.
HCV 400/460 HCV 300/500/700
S3
A
S1
BP
3
S2
1
2
S4
B
4
S3
A
S1
B
BP
3
S2
1
24
S4
Fig. 7
Loc. Mode A Mode B
S1 T1 temperature sensor - outdoor air T3 temperature sensor - extract air
S2 T2 temperature sensor - supply air T4 temperature sensor - exhaust air
S3 T3 temperature sensor - extract air T1 temperature sensor - outdoor air
S4 T4 temperature sensor - exhaust air T2 temperature sensor - supply air
A VOC and RH% sensor (accessory) N/A (blocked)
B N/A (blocked) VOC and RH% sensor (accessory)
1 P1 pressure connection - outdoor air P3 pressure connection - extract air
2 P2 pressure connection - supply air P4 pressure connection - exhaust air
3 P3 pressure connection - extract air P1 pressure connection - outdoor air
4 P4 pressure connection - exhaust air P2 pressure connection - supply air
BP Cable for bypass Cable for bypass
Illustration of
control parts