Dantherm HRV 501 User manual

HRV 501
Service manual
Rev. 1.4
en •da •de

2
Der tages forbehold for trykfejl og ændringer
Dantherm can accept no responsibility for possible errors and changes
Irrtümer und Änderungen vorbehalten
Dantherm n’assume aucune responsabilité pour erreurs et modifications éventuelles

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070995 • Version 1.4 • 12.07.2019
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Introduction
Overview
Introduction
This is the service manual for the Dantherm Air Handling A/S home ventilation unit type
HRV 501 – type 352460
Manual, part no.
Part number of this service manual is 070995
Target group
The target group for this service manual are:
•The daily users
•Technicians who install and maintain the unit
Copyright
Copying of this service manual, or part of it, is forbidden without prior written permis-
sion from Dantherm Air Handling A/S.
Reservations
Dantherm Air Handling A/S reserves the right to make changes and improvements to
the product and the service manual at any time without prior notice or obligation.
Continued overleaf

2
Overview, continued
Table of contents
This manual covers the following topics:
Introduction
................................................................................................................1
Overview..............................................................................................................1
Product description
.....................................................................................................3
Overview..............................................................................................................3
Overall description...............................................................................................4
Components description ......................................................................................5
Electronic control.................................................................................................7
Air flow and filters ...............................................................................................9
Ventilation functionality .....................................................................................10
Installation and initial setup ...............................................................................12
User’s guide
.............................................................................................................15
Main functions...................................................................................................16
Set the time .......................................................................................................17
Adjusting temperatures......................................................................................18
Fire place...........................................................................................................19
Calibrate fan speed ............................................................................................20
Filter alarm timer ...............................................................................................21
Week programmes .............................................................................................22
Service menu .....................................................................................................25
Service guide
............................................................................................................27
Overview............................................................................................................27
Preventive maintenance......................................................................................28
Replace filters and reset filter alarm ...................................................................30
Accessories........................................................................................................32
Spare part list ....................................................................................................34
Fault finding guide.............................................................................................35
Technical information
...............................................................................................37
Overview............................................................................................................37
Technical data ...................................................................................................38
Dimensions........................................................................................................40
Wiring diagram ..................................................................................................41
Appendix B – Start up and running information ..................................................43
Index.................................................................................................................44

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070995 • Version 1.4 • 12.07.2019
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Product description
Overview
Introduction
This section describes the HRV 501 unit, and its functionality
Content
This section covers the following topics:
Overall description
..................................................................................................... 4
Components description
............................................................................................ 5
Electronic control
....................................................................................................... 7
Air flow and filters
..................................................................................................... 9
Ventilation
.............................................................................................................. 10
Installation and initial setup..................................................................................... 12

4
Overall description
Introduction
This section gives you a description of the overall unit.
HRV 501 overview
HRV 501 ventilation unit, supply fresh air to residential home, and exchanging heat
from outgoing air to incoming air, resulting in
very low energy loss.
HRV 501 is designed to be wall mounted in dry surroundings and >10°C. e.g. utility
room or similar heated rooms.
Illustration, inter-
nal
Fig. 1
Parts overview
No.
Part
No.
Part
1
Antenna module
6
Supply air fan
2
Safety switch
7
Filter (F7)
3
Control board
8
Heat exchanger
4
Electric heating element (accessory)
9
Extract air fan
5
Filter (G4)
1
2
3
4
5
6
7
8
9

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Components description
Introduction
This section describes the individual components of the HRV 501. Please use the Fig. 1
illustration on page 4 for reference
Cabinet
Cabinet parts are made of aluzink coated sheet metal, finished with powder paint. Cabi-
net is internal sound and heat insulated, with fire retardant polyester foam. The unit´s
cabinet is designed for mounting in 10-40° C ambient temperature
Filters
The unit is standard equipped with class F7 cassette filter on supply air and G4 cassette
filter on exhaust air. These filters remove dust and particles, in both airflows going to
the heat exchanger. These filters protects the heat exchanger and improves the inside
en
vironment
During the filter timer period of
4380 hours, both fan speeds will increase, to compen-
sate for higher filters resistance. At every 500 hours decrease in remaining filter time,
each fan increases by 1%, without changing the differences in speed be
tween the two
fans Speed 4 will only be changed if initially calibrated below the default 100%
Heat exchanger
The heat exchanger moves the heat from extract air to the supply air. The heat ex-
changer is rotating slowly in order to move the exchanger parts from extract air to sup-
ply side
1. Heat is initially accumulate in the exchanger’s metal at the extract side
2. Secondly releasing this heat again to the supply air, after the exchanger has ro-
tated the heated area, to the supply air section.
Fans
Supply air fan supply fresh outdoor air through the unit’s heat exchanger to the distri-
bution ducts, where it
´s distributed to bedrooms, living rooms and possibly sauna or
steam bath.
The extract air
fan draws used and moistened air from inside, through the unit and heat
exchanger, in which most of the heat is moved to supply air. Finally the air is exhausted
to the outside.
Safety switch
When opening the unit, the safety switch breaks the power supply, and operation will
stop immediately.

6
Components description, continued
Electronic control
Detailed description of the electronic controls on page 7 , and user guide page 15
Temperature
sensors
Part
Description
T1
Outdoor air temperature
T2
Supply air temperature
T3
Extract air temperature
T4
Exhaust air temperature
Fig. 2
Safety switch
For safety reasons, the internal safety switch cuts off power supply when the units front
cover is removed. Remounting the front cover enables operation again.
Electric heating
element
(accessory)
Additional heat can be applied, if installing an electrical heat element (accessory list at
page
32) The heat element increases the supply air temperature, to compensate any
temperature drop over the heat exchanger in cold operation conditions.
Functionality described on in ventilation func
tionality at page 10
Electrical temperature set point described on page 18.
External humidistat
(accessory)
This unit features an external humidistat connection, for optional comfort enhance-
ment.
Place the humidistat in areas where humidity changes rapidly, e.g. bathrooms.
When air humidity is higher than set point, fan speed will increase to fan speed 4, until
humidity again is lower than set point, and the unit returns, to normal operation
T2
T1
T3
T4

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070995 • Version 1.4 • 12.07.2019
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Electronic control
Introduction
This section gives you a detailed description of the electronic control
Function
The unit´s main controller is placed at the internal PCB (Fig. 3), together with I/O inter-
faces to internal components as well as accessories. Extension board with antenna(
Fig.
4
) is drawn outside of the cabinet, and connected to main PCB with a non-extendable
multicore cable
The battery operated remote control with disp
lay(Fig. 5), utilizes a highly flexible con-
trol option, communication with the HRV 501unit over radio waves
Wiring diagram to be found on page
41.Remote and main board are mated. Description
of this in section “initial setup” at page 12
Illustration
This drawing illustrates the remote controller, the main control board and the antenna:
Fig. 3
Fig. 4
Fig. 5
Remote control
display
Fig. 6
User guide at page 15 describes the use in details
continued overleaf
Weekday
Fan speed
Display of data
(Normal display
shows the actual
time)
Clock
Menu icons
Temperature set-
Fan speed
Filter alarm
Programmes
Service
Heat (Here step 10 of
10). Electric heating ele-
ment is an accessory
Operational feed back
Screen with dis-
Keyboard

8
Electronic control, continued
Start-up screen
This illustrates the start-up screen or ”normal screen con-
dition” (the example shows that it is Wednesday, the time
is 13:45, and the fan is running at step 1 speed):
Batteries
The remote controller uses two standard 1,5 V AAA batteries (included)
Activating
The remote controller is automatically activated by pressing any random key.
Please note: After connecting the unit, it may take up to 2 minutes before the remote
controller shows the correct display
.
This will happen after each disconnection and reconnection of the unit. Power lo
os to
remote or unit will not erase any information
Power saving func-
tion
The remote controller switches automatically off after approx. 2 minutes without acti-
vating any of the keys (Sleep function).
Faulty operation
/filter alarm
The remote controller is automatically activated for about 1 minute every two hours to
test for faulty operation or filter alarm.