REC RT 250S-EC-RS User Manual Download Page 21

 
 

 

REC Indovent AB, Box 37, 431 21 Mölndal  

|  

tel.031-675500  

|

  www.rec-indovent.se 

 

20 

MAINTENANCE & SERVICE 

Ventilation Unit RT 250/400S-EC-RS

 

 

Cleaning the air diffusers 

The building's air diffusers must be 
cleaned regularly in order to maintain 
correct ventilation. Use a dry cloth 
and/or a small brush to reach inside the 
opening of the diffuser. It can also be 
taken down if that makes cleaning 
easier. Use a duster or a dry cloth to 
remove possible dirt marks in the ceiling 
around the device.   
NOTE!  The air diffuser's setting must not be 
changed. If taken down, each diffuser must be 
returned to its original place. 
 

Cleaning the duct system 

The exhaust air ducts - and sometimes the supply 
air ducts as well - may need cleaning at long 
intervals. Dust and dirt will deteriorate the capacity 
of the AHU if not removed. 
Authorized 
ventilation 
cleaners should 
carry out the 
cleaning.  
However, you 
yourself can 
easily clean the 
part of the duct 
which is close to 
the air diffusers. 
Take down the diffuser.  Use a vacuum cleaner or 
duster to clean the inner part of the duct as far as 
you can reach.  Refit the diffuser, making sure the 
setting is not changed. 
 

Checking the outdoor air intake 

Once a year the outdoor air intake should be 
checked.  Make sure it is not clogged by for 
example leaves, snow or ice. 
 

 

Service 

Service and repairs, beyond normal maintenance, 
should be carried out by professionals in the 
ventilation field, or - if electricity is involved - by an 
authorized electrician.  

 

 

 

The electric panel must not be opened by 
other than authorized specialist. 
 

The plates covering the fans must not be 
removed when the AHU is running, as there 
is a risk of contact with moving parts. Make 
sure the electricity has been cut off  

     (unplugged or fuse removed). 
 

Interferance with the AHU system may 
affect the warranty terms. 
 
Use original spare parts only. 
 
 

Disposal and recycling 

The unit has a long service life if it is properly 
maintained and can be renovated to advantage. 
Spare parts - see 

www.shop-recvent.se

 

When the unit is to be disposed of: see information 
on waste management and recycling on our 
website. 
Prevent accidents when the AHU is disposed of.  
Remove the cable from the wall socket and cut it as 
close to the unit as possible.  Store and transport 
the waste unit lying down.   
Please leave the unit to be recycled where such 
facilities exist. Check with your local authority for 
recycling advice. 
 
 
 
 

 
List of abbreviations 

 

AHU 

air handling unit 

BP 

by-pass damper 

Comp. 

compensate(d) 

CP 

circulation pump 

DUC 

controller 

EA 

exhaust air 

El.heat. 

electric heating 

EXT 

extract air 

FRP 

freeze protection 

hour 

Int. 

Internal 

KAVK 

condensation boiler 

mm:dd 

month:day 

 
 

 
OD 

outdoor 

protection 

per 

period 

pos. 

position 

RM 

room 

second 

Setp. 

setpoint 

SA 

supply air 

Temp. 

temperature 

ULS 

outdoor air damper 

 
 

DATE 

is shown in the format YY-MM-DD. 

 
TIME 

is shown in 24-hour format

 

 

Summary of Contents for RT 250S-EC-RS

Page 1: ...ndovent AB Box 37 431 21 M lndal tel 031 675500 www rec indovent se 1 User manual DESIGN TECHNICAL INFORMATION OPERATION CONTROL MAINTENANCE SERVICE MAINTENANCE SERVICE Exhaust air filter article No Q...

Page 2: ...el Bokm rket r inte definierat Temperatures ECO adjusts Control mode Limit for cooling 2 Fan control 10 Fan control 3 Timer 11 Time and summer wintertime Activate timer Time schedule Weekend schedule...

Page 3: ...REC Indovent AB Box 37 431 21 M lndal tel 031 675500 www rec indovent se 3 CONTENTS Ventilation Unit RT 250 400S EC RS...

Page 4: ...as exhaust air fan see point 4 6 Heat exchanger Temovex counterflow heat exchanger is designed by our own staff and is the result of 30 years experience of high efficient counterflow heat exchangers...

Page 5: ...electricity water GT1 Temperature sensor Supply air red sensor GT11 Temperature sensor outdoor air blue sensor TFR Filter Supply air Outdoor air FFR Filter Exhaust air TF Fan Supply air FF Fan Exhaust...

Page 6: ...W 238 W heater 900W Extended heater option 900W Power water coil small 1150 W1 1500 W1 Power water coil big option 2000 W1 2800 W1 Water connection DN12 Voltage Frequency 230 V 50 Hz Fuse 10 A Filter...

Page 7: ...enu where it is possible to change some parameters Steady You are now in change position Menu system The unit s various settings and the status of different values such as temperature etc Can be viewe...

Page 8: ...e Heating xx Bypass xx and Cooling xx If all have 0 output 0 is shown Temp shows current temperature set point Se sid Fel Some menus may be missing depending on unit configuration REC TEMOVEX Mode Nor...

Page 9: ...rature is measured in the extract air duct close to the unit Extract air is the air that after the heat has been recovered leaves the unit and is sent out of the house Room temperature is measured usi...

Page 10: ...eeze P temp Actual 8 5 C Cooling limit Outd Temp 20 0 C Hysteresis 1 0 C Cont d from Temperature p 7 and above page Supply air temp Actual 25 1 C Supply air temp livingroom Actual 26 5 C Outdoor air t...

Page 11: ...d while the cooker fan is used During kitchen flow the supply air fan normally has a higher flow than the exhaust air fan to compensate for the air that the cooker fan extracts Off In this mode all fa...

Page 12: ...s are in the format MM DD Imagine that you are entering a time period from 00 00 one day until 00 00 the next day For example holiday June 6th is written 06 06 06 07 When the current date falls within...

Page 13: ...lity to adjust the value for the temperature sensors up or down Set an offset value May for example be used to synchronize the old normal thermometer with the system temperature Input the difference h...

Page 14: ...tputs All configured digital outputs such as ULS KAVK CP etc can be set to Auto On or Off or similar words indicating the two possible conditions of a digital signal Filter timer The filter timer is a...

Page 15: ...hould not be done without proper knowledge since it may cause danger and in worst case damage to property Alarm history This shows the 21 latest alarm activities E g when the alarm was triggered when...

Page 16: ...lt Setting Parameter Default Setting Language Swedish Summertime Yes Address 254 30 Activate timer No Setpoint supply air temp control 19 C The timer controls Min flow Setpoint exhaust air control 21...

Page 17: ...el with display is the most advanced remote panel This also contains a temperature sensor and can be used as a room thermostat It also has a display and some keys allowing you to see different tempera...

Page 18: ...nt mode than AUTO It may be that the unit is in a speed between min and max and normal and forced respectively due to forced or safe mode The symbol fan speed will show the actual fan mode according t...

Page 19: ...d increased supply air during the initial time after the stove has been lit It means that the cooling is blocked so that you do not cool out the nice heating from the stove Start of stove timer Pushin...

Page 20: ...power Open the unit s door Remove both covers Disconnect the fan s electric plug and pull out the fan Clean one fan at a time Clean the impeller using a brush or compressed air Refit the fans in reve...

Page 21: ...nd normal maintenance should be carried out by professionals in the ventilation field or if electricity is involved by an authorized electrician The electric panel must not be opened by other than aut...

Page 22: ...21 Notes...

Page 23: ...22 Notes...

Page 24: ...23 Notes...

Page 25: ...o specification and construction without prior notification REC Indovent AB Box 37 SE 431 21 M lndal Sweden Visiting address K rragatan 2 Tel 46 31 67 55 00 Fax 46 31 87 58 45 www rec indovent se Cert...

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