Cairox CHRU-L300 User manual

Technical Manual of
Vertical Energy Recovery Ventilator
APPLIED TO MODELS
CHRU-L300
CHRU-L600
Contents
Accessories List---------------------------------------------1
Safety Attentions--------------------------------------2
Product Introductions--------------------------------------3
Specifications and Operation Instructions----------4~5
Operation Instructions---------------------------------6~7
Installation Instructions------------------------------8~9
Maintenance-----------------------------------------10~11
Failure Diagnose-----------------------------------------12
Contents
Attention
Please read this
manual carefully
before using the
equipment
Importer: Cairox Bulgaria Ltd.
Sofia 1582, 301 Tzarigradsko chaussee Blvr.
Tel: [phone]
Email: [email protected]
www.cairox.bg

1
Accessories List
Knock-on anchor
bolt 2 sets
Tapping screws 8 pc Remote controller
and magnet 1 set
Anti-falling fixed
plate A 1 pc
Anti-falling fixed
plate B 1 pc
Anti-falling connecting
plate 1 pc
Power cable 1 pc Air vent flange
2 pcs
PU sealing strip
1 roll
M5 bolt 8 pcs
M5 nut 8 pcs
Gasket 16pcs
Plug adapter Fixing plate 2pcs
The package includes the following items. Please check when open the box：
1. Ventilator unit 1 set
2. Operation manual 1 piece
3. And the below listed parts
Please read the following safety instructions before installation. And ensure that the unit is
installed correctly. Please observe all instruction in order to avoid any injury or damage to
equipment or property.
Don’t install in the place of flam-
mable gas leakage, the gathering
of leakage gas will cause fire acci-
dent.
After installation, non-
professional person move the
product privately will cause dam-
age to the equipment.
Please don't block the indoor out-
let and return air inlet so as to
avoid fan abnormalities. Be sure to turn off the power
before maintenance or contact
the electrical parts
Please don't operate the machine
with wet hands, especially plugs
and electrical parts.
Don't remove motor and circuit
board to avoid electric leakage.
Must use three-phase power
socket. Improper ground wire
connection may cause electric
shock.
！
Safety Attentions
2
The following symbols indicate potential
levels of caution.
The following symbols indicate compliance
which must be observed.
Situations with a risk or death
or serious injure Not allowed or Stop
Situations with a risk of injury
or equipment damage. Must follow or obliged
！
This product is 220V ~ 50Hz power
supply and three-pin plug. Please
use suitable power supply.
Please use a clean soft cloth to
wipe the machine to avoid
scratch
This product is common residential
product. If used in special circum-
stances, please consult our tech-
nical staff first.
For daily turn off, please use the
touch screen controller. If not at
home for a long time, please cut
off the power to save energy.
Please follow the maintenance in-
structions in this manual: clean the
fresh air and return air primary
filter and total heat exchanger
regularly; replace primary filter ,
return air filter, PM2.5 filter, and
medical level filter regularly.
Please install the product in envi-
ronment where humidity smaller
than 85%; do not introduce fresh
air in poor environment area.
Fresh air outlet should be away
from the kitchen ventilator, gar-
bage dumps, pollution discharge
outlet, air conditioning outdoor
units.
！
！

Working Principle and Functions
Holtop vertical energy recovery ventilator is the ventilation system which integrates air
purification and energy recover function. It is made of supply fan, exhaust fan, heat ex-
changer, primary filter, PM2.5 filter and HEPA filter at OA side, primary filter at RA side. It
has functions as below:
1.Fresh air purification: after the outdoor air driven by supply fan and go through the pri-
mary filter and PM2.5 filter, it will have energy exchange with the RA in the heat exchang-
er; and after the fresh air further filtered by the HEPA filter, then sent to indoor; mean-
while, the EA fan will exhaust the polluted air to the outdoor, so to improve the indoor air
quality.
2.Energy Recover Function: Usually the temperature and humidity difference between
indoor air and outdoor air is very large. When the indoor is under the comfortable temper-
ature and humidity, it will increase the burden of the air conditioning system if we send
the fresh air to indoor directly after filtering. In order to avoid this situation, our ERVs are
all equipped with heat exchanger, which can recover the energy of EA and then recycle to
OA, this will greatly decrease the loss of energy.
Product Introductions
Unit：mm
Dimensions (mm)
Model：CHRU-L300
3
Dimensions
Model：CHRU-L600 Unit：mm
Specifications
Model CHRU-L300
Airflow ( m3/h) 300
Volt (V) 220~240 IP Class IPX2
Filtration efficiency (%) 99 Frequency (Hz) 50
Temp. efficiency (%) 82 Noise dB(A) 36
Weight (Kg) 55 Input power (W) 70
Serial number Refer to the
ventilator body Dimensions (mm) 1580*560*410
4
Product Introductions & Specifications

Specifications
User manual of the main interface of display screen
1.The upper left corner of the screen is the WIFI connection status, if the device not
equipped with WIFI function, then the symbol will not appear.
2.The upper right corner of the screen is the clock or timing status.
3.The middle of the screen is the current indoor PM2.5 value.
4.The left side in the center of the screen is the current room temperature and humidity
values.
5.The right side in the center of the screen is the current operation speed of the device.
6.At the bottom of the screen are seven adjusting buttons: “ON/OFF”, “Lock”, “Mode”,
“Timer”, “-” and “+” .
7."Auto", "Manual", "Sleep", "PURE-L","PURE-M" and "PURE-H", “Timer” are current
mode indication on top of screen.
Specification & Operation Instructions
Model CHRU-L600
Airflow ( m3/h) 600
Volt (V) 220~240 IP Class IPX2
Filtration efficiency (%) 99 Frequency (Hz) 50
Temp. efficiency (%) 82 Noise dB(A) 36
Weight (Kg) 65 Input power (W) 125
Serial number Refer to the
ventilator body Dimensions (mm) 1700*560*460
5
Buttons function introductions
1. Long press the button “on/off” to turn on or off the machine;
2.After startup, touch the “Mode” button to switch mode: Auto, Manual, Timer, Sleep,
PUIE L, PUIE M, PUIE H.
Remark：when the machine starts, default is “Auto” mode.
3. Under “Manual” mode, touch button or to select speed 1-8.
4. Under “Timer” mode, touch button or to set timer.
5. Under “Time” mode, touch button or to set time.
Explanation for all modes
1. Under mode “Auto”, it will adjust supply air volume according to indoor PM2.5 range,
corresponding speed as below:
Remark: To ensure sufficient indoor fresh air supply, the speed will rise automati-
cally after model “Auto” runs for some time, 5-10 minutes later it will recover to
previous speed. During this time, the screen shows different speed from above
chart.
2. Under “Manual” mode, press button “Speed” to set speed.
3.“Timer” mode, please refer to remote controller manual.
4. Under “Sleep” mode, the unit runs at speed 1, after 30s the screen luminance will get
half as normal.
5. Mode “PURE L”, “PURE M”, “PURE H” are to improve indoor air quality rapidly; The purifi-
cation performance is enhanced progressively for the 3 modes.
PM2.5 value Status Operational speed
0≤PM2.5≤35 Excellent 1
35＜PM2.5≤75 Good 2
75＜PM2.5≤115 Gentle pollution 4
115＜PM2.5≤150 Medium pollution 5
PM2.5＞250 Serious pollution 8
150＜PM2.5≤250 Heavy pollution 7
Operation Instructions
6

User manual of remote controller
Button function introduction:
1. Press “on” to turn on the ventilator.
2. Press “off” to turn off the ventilator.
3. Press “Lock” to turn off the display,
repress again to turn on the display.
4. Press “Hour”, “Hour” part at the top right corner of the ventilator screen starts twin-
kling, then press “+” to increase time, press “-” to decrease time, repress “Hour” but-
ton to save time and exit.
5. Press “Minute”, “Minute” part at the top right corner of the ventilator screen starts twin-
kling, then press “+” to increase time, press “-” to decrease time, repress “Minute”
button to save and exit.
Remark: During twinkling, if no operation in 15s, twinkling ends and save setting
automatically.
6. The “-”, “+” buttons are used in coordination with other buttons.
7. The function of “Sleep” button is similar to “Sleep” button on ventilator.
8. The function of “Auto” button is similar to “Auto” button on ventilator.
9. Timer: Press “Timer”, timer mode starts, time at the top right corner of the machine
screen twinkles. Press “+” to increase time and “-” to decrease time in interval of 30
minutes, the longest timing is 8 hours, default timing is 00:00; Repress “Timer” button
to save and exit timer setting, top right corner of the ventilator displays current time
again.
Remark: During twinkling, if no operation in 15s, twinkling ends and save setting
automatically.
After timer setting finished, if repress “Timer” button, top right corner of the display
shows remaining time for the timer setting, at this time it is ok to set the timer again.
To cancel timer function, set the time to 00:00.
10. The function of “PURE L”, “PURE M”, “PURE H” is similar to that on the ventilator.
Operation Instructions
7
Installation Instructions
Flexible duct installation
Inner diameter of
the duct (mm)
Outer diameter of the
duct (mm)
Remark
≥150 170 Fresh air and exhaust air vent
diameter is 150mm
Note: The hole diameter should be changed according to the actual flexible duct
size. The 2 holes should face downward toward the outside 5°
1. According to the vents size and recommended hole size to select suitable flexible duct,
recommended inner and outer diameter of the duct is as below.
3. According to the wall depth, choose the
suitable duct length, connect the ducts to
the ventilator vents and fix the ducts by
sealing ring.
4. Put the other end of the ducts to the
holes, during this process, user can slightly
move the ventilator until the location well
enough.
2. According to the ventilation project design, choose the suitable location, to drill 2 holes
on wall for fresh air inlet and exhaust air outlet, recommended hole sizes are diameter
175mm, please refer to the ventilator “dimension” before drilling the holes.
5. Pull out the ducts from outside and con-
nect the ducts to the rain covers, then fix
the ducts and rain covers by sealing ring.
8

Installation Instructions
9
6. After the rain covers and the ducts are fixed, push the rain covers toward the wall and
fix on it by screws, then to seal the gap between the wall and rain covers by sealant.
Attention: The installation guide is suitable for all the models in this manual, be-
fore drilling holes please pay attention on the height between vents of the venti-
lator and the floor (refer to page 3 and 4 about the dimension)
Installation of anti-falling fixed plate
1. Remove the top central 2 screws from the back of the ventilator, and fix the anti-falling
fixed plate A on it.
2. Fix the anti-falling fixed plate B on the suitable location of the wall by Knock-on anchor
bolts.
3. Based on different project conditions to decide if need to use the anti-falling connecting
plate between plate A and B, adjustable length is 100-600mm.
Remove screws
Anti-falling fixed plate A Anti-falling fixed plate B
Connecting plate
Adjustable
100-600mm
OA primary filter maintenance and change
PM2.5 filter change
HEPA filter is at the top of the ventilator, as showed by the above picture.
HEPA filter change: open the ventilator door, take out the HEPA filters and change to be
the new one, recommended change period of the HEPA filter is 10 to 12 months.
OA primary filter is at the bottom right side of the ventilator, as showed by the below pic-
ture, it is to filter the large particle in the air.
Daily maintenance of the OA primary filter: use the vacuum cleaner to clean the filter,
recommended period is 3 months.
OA primary filter change: open the ventilator door, pull out the filter gently and replace to
the new one, pay attention on the arrow of the filter should face up.
10
RA primary filter maintenance and change
RA primary filter is at the right side of the heat
exchanger, as showed by the right picture, it is to
filter the large particle in the air.
Daily maintenance of the RA primary filter: use
the vacuum cleaner to clean the filter, recom-
mended period is 6 months.
RA primary filter change: open the ventilator door,
pull out the filter gently and replace to the new
one.
HEPA filter change
PM2.5 filter is at the bottom right side of the heat
exchanger, as showed by the right picture, it is to
filter the particle below 2.5μm in the air.
PM2.5 filter change: open the ventilator door, pull
out the filter gently and replace to the new one,
recommend change period is 6 months.
Maintenance
OA primary
RA primary
filter
PM2.5 filter
HEPA filter
Activated carbon
titanium dioxide
filter
Activated carbon and titanium dioxide filter change
Activated carbon and titanium dioxide filter is used to filter harmful gases such as for-
maldehyde, benzene series, ammonia and nitrogen, it has a strong removing power. It is
recommended to clean or replace the filter every 6 months.

Maintenance of fans and controller
Notice: Not for Non-professional, if any questions please contact manufacturer
Maintenance of heat exchanger
11
Heat
exchanger
The plate heat exchanger is installed at the central right
of the ventilator, it is the air to air heat exchange de-
vice. It’s used to separate fresh air and exhaust air,
effectively avoid cross-contamination, and ensure that
the cleanness of fresh air.
- Open the door of ventilator, press two sides of the
heat exchanger by hand and gently take out the plate
heat exchanger, don’t be over-forced, otherwise may
damage the heat exchanger.
- Clean the dust and dirt on the exchanger by vacuum
cleaner, after this, to install back the heat exchanger
and close the ventilator door.
- It is recommended maintain or clean the exchanger
every 3 years, for further help can contact manufactur-
er.
Maintenance
Maintenance of the PM2.5 sensor
In order to prevent the PM2.5 sensor from being
blocked, the sensor needs to be cleaned regularly.
- The PM2.5 sensor is located at the left bottom of the
controller box, as the right picture.
- According to the right picture, use a hair dryer or
blower to clean the sensor, When using the hair dryer,
do not turn on the hot air.
PM2.5 sensor Controller box
Blow here
User can make self trouble shooting following below chart in case of any failure.
Phenomenon Possible reasons Solutions
The display
doesn’t start up
1.Loosen or bad contact of power plug
2.Broken of power cable
3.Fault of display
1.Check if the plug is loosen
and reconnect it
2.Replace the power cable of
same specification
3.Contact manufacturer for
replacement
None or wrong
display of
temperature,
humidity or PM2.5
values
Short circuit or open circuit of the
corresponding sensor
Contact manufacturer for
repair
Abnormal noise
1.The ducts connecting to machine are
not fixed
2.Foreign matter goes inside the
ventilator
3.Fault of supply fan or exhaust fan
1.Fix the duct
2.Contact manufacturer for
repair
3.Contact manufacturer for
repair
Insufficient of
fresh air
1.Blockage of foreign matters at air
inlet/outlet.
2.Blockage of primary or HEPA filter.
1.Check and clear the foreign
matters
2.Clearn or replace the filters
Excess particles at
supply air outlet Overuse of primary and HEPA filters Replace the filters
No response to
the fan speed
switch
1.No feedback from supply and ex-
haust fan
2.Fault of fans
1.Contact manufacturer for
repair
2.Contact manufacturer for
fan replacement
Special declaration
The following situations are not included in the warranty.
1. Obvious man-made sabotage during usage.
2. Usage, maintenance and repair not following the instructions of this manual.
3. Damages caused from any force-major.
12
Failure diagnose