Cooper&Hunter CH-HRV1.5KDC, CH-HRV5KDC, CH-HRV6.5KDC, CH-HRV8KDC, CH-HRV2.5KDC User Manual
...
USER’S MANUAL
ENERGY RECOVERY
VENTILATION SYSTEM
MODELS:
CH-HRV1.5KDC
CH-HRV2.5KDC
CH-HRV3.5KDC
CH-HRV5KDC
CH-HRV6.5KDC
CH-HRV8KDC
CH-HRV10KDC
CH-HRV15KDC
CH-HRV20KDC
Attention
For proper operation, please read and keep this manual carefully
Designed by Cooper&Hunter International Corporation, Oregon, USA
www.cooperandhunter.com
Contents
Safety Considerations------------------------------------------------------------3,4
Unit Specifications--------------------------------------------------------------- 5,6
Dimensioned Drawings----------------------------------------------------------7,8
Installation Considerations--------------------------------------------------9,10,11
Electrical Installation--------------------------------------------------------------12
Wiring Diagrams---------------------------------------------------------------13,14
Commissioning Information------------------------------------------------------15
Intelligent Controller-------------------------------------------------------16 to 19
Dia Switch ------------------------------------------------------------------------20
Modbus Table --------------------------------------------------------------------21
Maintenance ----------------------------------------------------------------------22
Safety Considerations
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.
Safety attentions
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/property damage.
Must follow or obliged
Installation to be carried out by qualified
person, End Users must not install, move or
re-install this equipment by themselves
Installation engineers must follow this manual strictly. Improper action can create a
health hazard and reduce efficiency of the
unit
Unit must be installed strictly following this
manual and mounted to a weight bearing
surface for the weight of the unit
During maintenance or repair, the unit and
circuit breaker must be switched off. Otherwise electric shock could occur.
An anti-bird net or similar device should be
installed to outside vents. Ensure there are
no obstructions to or in the ducts
Fresh air vent must be far enough away
from any flue gas discharge or areas where
hazardous vapors are present
Electric engineering must follow national
regulations and the manual, use special cables. Less capacity cables and improper engineering can cause electric shock or fire.
Ground wire cannot be connected to gas
pipe, water pipe, lighting rod or telephone
line etc. Incorrect grounding can cause
electric shock.
Power cable and wires must be installed by
a qualified electrical engineer. Improper
3
connection can cause over heating. Fire and
loss of efficiency.
Insulation between the metal ducting and
wall penetration must be installed if the
ducting penetrates metal wall cladding, to
avoid risk of electric shock or current leakage.
Use only approved installation hardware
and accessories. Failure to observe can result in fire risk, electric shock and equipment failure
The outdoor ducts must be installed facing
downwards to avoid rain water entering.
Improper installation can cause water leakage.
To avoid condensation, insulation should be
fitted to fresh air ducts. Other ducting may
also require insulation depending on dew
point conditions.
The cover of wiring box must be pressed
down and closed to avoid dust and dirt entering. Excess dust and dirt can cause overheating of terminals and result in fire or
electric shock.
Where the unit is positioned, at high level in
a hot humid situation. Please ensure sufficient ventilation is available
Correctly sized MCB must be fitted to the
unit suitable earth leakage protection
should also be installed to avoid risk of electric shock or fire.
Safety Considerations
Safety Considerations
Do not install the unit in an extremely humid conditions, as it may result in electric
shock and pose a fire risk.
Don not install the unit in areas there any
poisonous or caustic gases are present.
Do not use the units as the primary kitchen
extract grease and fatty deposits can block
the heat exchanger, filter and pose a fire
risk.
Do not install the unit near open flame as it
may result in over heating and pose a fire
risk
Acidic or alkali environments can cause
poisoning or a fire
Rated supply voltage must be maintained,
otherwise this may cause fire.
4
Specifications
Model
Performance
Airflow (m3/h) 150 250 350 500
Airflow (l/s) 43 71 100 143
Enth. Eff (%)
Temp. Eff (%) 75 75 75 75
Noise Db(A) 23 24 28 30
Power Supply 220V/1Ph/50Hz
Input Power (W) 51 81 112 143
Power Cable 2x1.5mm
Control Cable 2x0.5mm
Control
Fan Type DC Fan Motors
Fan Speeds (Supply) 10 Speed Fan Control
Fan Speeds (Exhaust) 10 Speed Fan Control
Summer Bypass Yes (Automatic with adjustable range)
Defrost Yes (Automatic with adjustable range)
CO2 Control Optional controller available (On / Off control with adjustable range)
Heating 70 70 69 67
Cooling 63 63 66 62
Standard Yes (7-Day Time-clock)
(BMS)
Modbus
CH-HRV1.5KDC CH-HRV2.5KDC CH-HRV3.5KDC CH-HRV5KDC
2
2
Yes
Fan Boost Contacts Yes (3x available connections to Contacts: Closed = Boost to High Speed)
Fire Shutdown Yes (1x available connection to Contact: Closed = Shutdown)
Weight (Kg) 25 29 37 43
Size (WxHxD) 580x264x808 599x264x882 804x270x882 904x270x962
Duct Size 150 150 150 200
5
Specifications
Model
Performance
Airflow(m3/h) 650 800 1000 1500 2000
Airflow (l/s) 186 229 286 429 571
Enth. Eff (%)
Temp. Eff (%) 75 75 75 75 75
Noise Db(A) 32 35 35 38 38
Power Supply 220V/1Ph/50Hz
Input Power (W) 205 290 305 580 610
Power Cable 2x1.5mm
Control Cable 2x0.5mm
Control
Fan Type DC Fan Motors
Fan Speeds (Supply) 10 Speed Fan Control
Fan Speeds (Exhaust) 10 Speed Fan Control
Summer Bypass Yes (Automatic with adjustable range)
Defrost Yes (Automatic with adjustable range)
CO2 Control Optional controller available (On / Off control with adjustable range)
Fan Boost Contacts Yes (3x available connections to Contacts: Closed = Boost to High Speed)
Fire Shutdown Yes (1x available connection to Contact: Closed = Shutdown)
Weight (Kg) 64 71 83 165 189
Size (WxHxD) 884x340x1222 884x388x1322 1134x388x1322 884x785x1322 1134x785x1322
Duct Size 200 250 250 300 300
Heating 68 71 71 71 71
Cooling 62 65 65 65 65
Standard Yes (7-Day Time-clock)
(BMS)
Modbus
CH-HRV6.5KDC CH-HRV8KDC CH-HRV10KDC CH-HRV15KDC CH-HRV20KDC
2
2
Yes No
6
Dimensioned Drawings
CH-HRV1.5KDC to HRV5KDC Models
CH-HRV6.5KDC to HRV10KDC Models
7
Dimensioned Drawings
CH-HRV15KDC to HRV20KDC Models
Model
CH-HRV1.5KDC
CH-HRV2.5KDC
CH-HRV3.5KDC
CH-HRV5KDC
CH-HRV6.5KDC
CH-HRV8KDC
CH-HRV10KDC
CH-HRV15KDC
CH-HRV20KDC
Dia.
(mm)
Φ150
Φ150
Φ150
Φ200
Φ200
Φ250
Φ250
280*650
280*650
Diagram Measurements
The table on right side shows suitable duct measurements for each unit.
The table below shows the dimensions of the image above and the two images previously, the letter in
the table represents the letter on the diagram .
Model L L1 W W1 W2 H H1 C G N
CH-HRV1.5KDC
CH-HRV2.5KDC
CH-HRV3.5KDC
CH-HRV5KDC
CH-HRV6.5KDC
CH-HRV8KDC
CH-HRV10KDC
CH-HRV15KDC
CH-HRV20KDC
808 867 580 510 290 264 20 100 19 Φ144
882 810 599 657 315 270 111 100 19 Φ144
882 810 804 860 480 270 111 100 19 Φ144
962 890 904 960 500 270 111 107 19 Φ194
1222 1150 884 940 480 340 146 107 19 Φ194
1322 1250 884 940 428 388 170 85 19 Φ242
1322 1250 1134 1190 678 388 170 85 19 Φ242
1322 1250 884 940 428 785 170 150 19 280*650
1322 1250 1134 1190 678 785 170 150 19 280*650
8
Installation Considerations
Installation Considerations
Protect the unit to avoid dust or other obstructions entering the unit and accessories during installation,
or whilst in storage on site. Service ports should be installed to allow access for filter maintenance.
RA
EA
SA
OA
CH-HRV1.5KDC
SERVICE PORT
RA
EA
SA
SERVICE PORT
OA
CH-HRV2.5KDC to HRV5KDC
RA SA
污风入口
新风出口
Dimensions
Model A B
CH-HRV1.5KDC
CH-HRV2.5KDC
CH-HRV3.5KDC
CH-HRV5KDC
CH-HRV6.5KDC
CH-HRV8KDC
CH-HRV10KDC
CH-HRV15KDC
CH-HRV20KDC
1. Be sure the ceiling height is no less than the Figures in above table B column.
2. Unit must not be installed close to boiler flues.
3. Following phenomenon should be avoided in the ducting installation.
Serve bends
Celling Height
580 320
599 320
804 320
904 320
884 390
884 440
1134 440
884 835
1134 835
Multiple direction changes
污风出口
新风入口
OA EA
CH-HRV6.5KDC to HRV20KDC
Multiple reducers/ crimped duct
检查口
SERVICE PORT
9
Installation Considerations
4.Exessive use of flex-duct and long flex-duct runs should be avoided.
5.Fire dampers must be fitted as per national and local fire regulations.
6.Unit must not be exposed to ambient temperature above 40℃ and should not face an open fire.
7.Take action to avoid dew and frost.
As shown by drawing below, unit will produce dew or frost when saturation curve is formed from A to C.
Use pre-heater to ensure conditions are kept to right of the curve (B to B＇,to move C to C) to prevent
condensation or frost formation.
8. To avoid the outdoor exhaust air cycling back to indoor, the distance between the two vents installed
on the outside wall should be over 1000mm.
9.If heater is equipped to the unit, operation of heater should be synchronous with the unit, so that the
heater starts to work only when unit starts.
10.Duct muffler may be considered if user wants indoor noise to be minimized.
10
Installation Considerations
Installation Diagram
Fresh Air Duct
Fresh Air In
Outside Fresh Air Duct
Exhaust Air Out
Insulation
Discharge Duct
Suspending Pole
Exhaust Duct
Return Air
Supply Air
Return Air
Supply Air
Physical Installation
1.Installer to prepare suitable threaded hangers with adjustable nuts and gaskets.
2.Install as shown by the image above. Installation must be level and securely fastened.
3.Failure to observe proper fixing could result in injury, equipment damage and excessive vibration.
Uneven installation will also effect damper operation.
Notes for reverse installation of the unit
4.Reverse labeling shows the unit is upside down.
螺母
Nut
垫圈
Gasket
天花板吊装螺杆
Suspending screw pole
(Φ10-Φ12)
吊装部件
Suspending Part
垫圈
Gasket
螺母
Nut
Ducting
1. Connection of unit vents and ducts should be taped or sealed to prevent air leakage, and should comply to relevant guidelines and regulations.
2. The two outdoor vents should face downward toward the outside to prevent any rain water ingress.
(angle 1/100 1/50).
3. Insulation must be with the two ducts outside to prevent condensation.
Material: glass cotton, Thickness: 25mm
Gradient1/100-1/50
坡度1/100-1/50
11
Electrical Installation
Power must be isolated during installation and before maintenance to avoid injury by electric shock. The
specifications of cables must strictly match the requirements, otherwise it may cause performance failure and danger of electric shock or fire.
Power supply is AC220V/50HZ/1 Phase. Open the cover of electrical box, connect the 2 wires (L/N/) to
the terminals and connect the cable of the control panel to the board according to the wiring diagram,
and join the control panel to the cable.
Model
Spec. of power supply
cable
Spec. of normal controller
cable
CH-HRV1.5KDC
CH-HRV2.5KDC
CH-HRV3.5KDC
CH-HRV5KDC
CH-HRV6.5KDC
2×1.5mm2
2×0.5mm
CH-HRV8KDC
CH-HRV10KDC
CH-HRV15KDC and CH-HRV20KDC
We do not accept any liability for any problems caused by the user’s self and non-authorized reengineering to the electrical and control systems.
2
12
Wiring Diagrams
CH-HRV1.5KDC to HRV10KDC Models
13
Wiring Diagrams
CH-HRV15KDC to HRV20KDC Models
14
Commissioning
Check that all cable sizes, circuit breakers and wire connections are correct before following below commissioning steps:
1. Press the power button once for starting; twice for closing. In On status, the light of power indicator is on, while in OFF status, the light is off.
2. Match the correct fan speeds to each ERV models. Press button for 6 seconds to enter
parameter settings and at this time the parameter number is shown in the middle of the screen,
press button to switch to parameter No. 21 (refer to parameters list in comming page) then
press to enter the parameter setting, default value (ERV codes) flesh at the right corner,
press UP and DWON buttons to change the codes to mach the correct ERV models according to
below table, then press button again to confirm setting.
3. Then check the mode and fan speed switch. Press button to switch , or mode,
check whether the temperature of the corresponding mode is correct. Press to switch the fan
speed of and , check if the airflow is adjusted corresponding to number 1-10 (stands for 10
speeds control in screen middle)
4. Check the operation of bypass. The default opening temperature of bypass is 19-21C (adjustable),
press button to check the temperature of . If the is 19-21C, the bypass will open automatically. If the outdoor temperature is not within 19-21C, then adjust the bypass opening temperature according the current to temperature to check the bypass function.
5. Bypass open temperature setting: press more than 6 seconds to enter the parameter setting
mode. Press twice to switch the parameter number from 00 to 02, the value flashes shown at
the right corner, the default value is 19. Then press to modify the value according to the current temperature by pressing up-down button and press to save the data. At the same time,
check the bypass is opened or not. Please remember to modify the bypass opening temperature to
19-21 after the commissioning
Code Models Code Models
6
5
4
3
0
CH-HRV1.5KDC
CH-HRV2.5KDC
CH-HRV3.5KDC
CH-HRV5KDC
CH-HRV6.5KDC
1
2
1
2
CH-HRV8KDC
CH-HRV10KDC
CH-HRV15KDC
CH-HRV20KDC
.
Loose or incorrect wiring connection can
15
cause explosion or fire when the unit starts
to work. Use only rated power voltage.
Don’t install, move or re-install the unit by
yourself. Improper action may cause unit
instability, electric shock or fire.
Running the unit continuously in an abnormal
status may cause failure, electric shock or
fire.
Don’t site intake supply vent in hot and humid
conditions , as it may cause failure, current
leakage or fire.
Isolate power during extended off periods
Isolate power and take care when cleaning
unit. (Risk of electric shock)
Clean the filter regularly. A blocked filter may
result in poor indoor air quality.
Don’t put fingers or objects into vents of
fresh air or exhaust air supply. Injury may
be caused by the rotation of the impeller.
Don’t change, disassemble or repair the
unit by yourself. Improper action may cause
electric shock or fire.
Switch off the power and breaker when you
clean the exchanger.
Don’t put any burner directly facing the
fresh air discharge, otherwise it may cause
an insufficient burning.
Observe guidelines and regulations relating
to incomplete combustion when use is associated with fuel burning appliances.
Intelligent Controller Instruction
Control Panel
The intelligent controller is surface mounted and comes with a LCD display screen.
The standard connection cable is 5 meters, but you can prepare extra cable if necessary.
LCD display screen
Bypass on
Power on
Time display
Week display
Timer period
Supply air
Supply air temperature
Outdoor air
Outdoor air temperature
Return air
Return air temperature
16
RA fan speed
Intelligent Controller Instruction
Display screen
Time decrease
Temperature increase Temperature decrease
Mode switch
Useless
Useless Air velocity setting
Time setting
Time increase
Power on/off
Power on indicator
Data save and function
Leave the operation
Useless
Choose a day Weekly timer on
Weekly timer off
Operation Instructions
1. ON/OFF: press ON/OFF button once for starting; twice for closing. In ON status, the light of power
indicator is on, and the ventilator begins to run. In OFF status, the light is off and the ventilator stops.
2. Mode switch: press MODE to choose to display the oA/rA/SA/Fr status.
3. Air velocity setting: press FAN button to adjust the air velocity. Users can set the return air velocity
in “rA” status, and set the supply air velocity in “SA” status. Fan speeds will be shown in number from 1
-10 means 10 different speeds.
4. Time setting: time records if power off. If user need to reset the time, please press the CLOCK but-
ton, when the colon of the clock stills, press it again, then the hour flashes, users can press button to
adjust the hour; then press the CLOCK button again to adjust the minute in the same way, the interval
is 10 minutes. After setting, please press SET button to save the data or press EXIT to leave the operation without saving the data. If no operation in 8 seconds, display will disappear and all setting is invalid.
5. Day setting: press DAY button, when the day code flashes, select the day by pressing button and .
After setting, please press SET button to save the data or press EXIT to exit without saving the data.
If no operation in 8 seconds, display will disappear and all setting is invalid.
6. Weekly timer on: press TIMER ON button, all the days display, then press this button to switch the
hour->minute->invalidation of timer. Users can set the hour and minute when flashing. When it shows
“--:--”; it means timer is invalid. Besides, users can press DAY button to switch the day, the day flashed
when chosen. After setting, please press SET button to save the data or press EXIT to leave the operation without saving the data. In the status of TIMER ON, code “1” “2” stands for the first or second period of timer. User can choose the period of timer by pressing the button of “MODE”. If no operation in
8 seconds, display will disappear and all setting is invalid.
17
Intelligent Controller Instruction
7. Weekly timer off: press TIMER OFF button, all the days display, then press this button to switch the
hour->minute->invalidation of timer. Users can set the hour and minute when flashing. When it shows
“--:--”; it means timer is invalid. Besides, users can press DAY button to switch the day, the day flashed
when chosen.
After setting, please press SET button to save the data or press EXIT to leave the operation without
saving the data. In the status of TIMER OFF, code “1” “2” stands for the first or second period of timer.
User can choose the period of timer by pressing the button of “MODE”. If no operation in 8 seconds,
display will disappear and all setting is invalid.
8. Check weekly timer: press DAY button, and press button ◄ and ► to choose the day, then the set
timer on and timer off will display. Users can press TIMER ON or TIMER OFF button to check the exact
time.
9. The running of weekly timer: the control system will record the current time, the ventilator starts to
run automatically when the timer is on, if the unit is on already, it maintains running. On the other
hand, it stops when the timer is off, if it is off already, it remains stop status. The timer on and off can
be used independently or simultaneously. When the timer is ON/OFF, users can still change the ON/OFF
status of the unit.
10. Parameter List of Controller are kept after restarting from power-off.
No. Contents Range Default Record Position
00 Power to auto restart 0-1 1 Main control
01 Electrical heater available 0-1 0 Main control
02 Bypass opening temperature X 5-30 19 Main control
03 Bypass opening temperature
range Y
04 Defrosting interval 15-99 30 Main control
05 Defrosting entering tempera-
ture
06 Defrosting duration time 2-20 10 Main control
07 CO2 sensor function value 28-C8
08 ModBus address 1-16 1 Main control
21 ERV models match/selection 0-7 Main control
23 Fan speed control 0: 2 speeds
24 Multifunction setting 0: Reserved
25 Filter alarm setting 0: 45 days
2-15 3 Main control
-9-5 - 1 Main control
66
(392-1960PPM)
1: 3 speeds
2: 10 speeds (DC)
1: Sweep filter alarm
2: sweep weekly timer
1: 60 days
2: 90 days
3: 180 days
(1000PPM)
2
0
0 Main control
Unit
℃
℃
Minute
℃
Minute
PPM
Main control
11. temperature setting, after connecting the electrical heater to the PCB (LD3 and LD4), then can set
the temperature by temperature increase and decrease buttons, when SA temperature lower than setting temperature then electrical heater on
1) 0℃＜setting temperature - SA temperature＜5 ℃，1st stage heater on, 2nd stage heater off
2) Setting temperature - SA temperature ＞5℃，1st and 2nd stage heater on
18
Intelligent Controller Instruction
12. Instruction of Parameter Settings
1) The control panel is in parameter setting mode via pressing the MODE button more than 6 seconds.
2) In the parameter setting mode, the valid parameter number (00/01/02/03/04/05/06/07/08/21/23/
23/24/25) is shown in the middle of the screen, press button SET to switch the parameter number.
Then press MODE to enter the parameter setting, the default value at the right corner flashes, press the
up-down button to adjust the data. After setting, press SET button to save all the data. After 10 seconds, the control panel begins to record the parameters. The setting is proved to be successful if the
parameters
13. Bypass opening parameter setting
1) The bypass is opened on the condition that the outdoor temperature is equal or higher than X and
less than X+Y.
2) The bypass is closed on other conditions.
14. EA fan defrosting mode
When EA side of heat exchanger temperature lower than –1℃(defrosting entering temperature, adjustable) and last for 1 minute, and the interval of defrosting is longer than 30 minutes (adjustable), the
exhaust fan will run at high speed automatically for defrosting, and supply fan will stop, until EA side
temperature higher than defrosting entering temperature +15℃ for 1 minute, or the defrosting time is
longer than 10 minutes (adjustable)
15. Filter Alarm, to set the filter alarm under parameter 25, the symbol flash as the filter alarm to
remind customer to clean the filters, to sweep filter alarm by setting parameter 24 value 1.
16. Error code, press set button for short to check the Error code, please refer to below error code table
Code
E1 Fresh air temperature sensor error
E2 EEPROM error
E3 Return air temperature sensor error
E4
E5 Communication error
E6 Supply air temperature sensor error
E7 Exhausted fan error
E8 Supply fan error
Exhaust air temperature sensor er-
ror (defrosting temperature error)
Error
19
Intelligent Controller Instruction
Introduction of dial switch
Dial switch
1. SW4-1: OFF-Traditional EA fan defrost ON-OA side electrical heater defrost
2. SW4-2: OFF-Auto by-pass and manual bypass via voltage free connector (free cooling)
3. SW4-3: OFF-CO2 sensor ON-Humidity and temperature sensor
4. SW4-4: Reserve
Attention: Please cut off the power before dialing.
1. SW4-1 is switching the defrost mode. Default is “off”, it means traditional defrost by EA fan. When
turn to “on”, the defrost mode is changed to be OA side heater defrost (required to connect the heater
to the OA duct, only suggested in winter under –15℃), at this time the parameter 01 would be turned
to 0 automatically and the supply air side electrical heater is not able to use.
Under electrical heater defrost mode, controller can automatic drive the electric heater on/off to heat
the fresh air in order to prevent frosting at the EA side of heat exchanger.
1) If the outdoor fresh air temperature < -15⁰C, the OA heater turns on for 50 minutes, then the ventilator switches off for 10 minutes and restarts.
2) If the OA heater switches on and the exhaust air temperature still <-1⁰C, then the ventilator will
stops for 50 minutes.
3) If the exhaust air temperature <-1⁰C and the outdoor air temperature >-15⁰C, the OA heater
switches on for 10 minutes for defrosting.
4) If the OA heater is on and temperature of outdoor air is >+25⁰C, then OA heater will stop for 5 minutes, If the outdoor air temperature is detected over 25℃ by sensor over 3 times, electrical heater
stops.
2. SW4-2 is the by-pass mode. Default is “off”, it means that by-pass will open automatically based on
the outdoor temperature. After connecting the bypass free voltage connector (refer to the wiring diagram), then bypass damper opens manually and fans run at high speed.
3. SW4-3 is switching the forced ventilation mode. Default is “off”, it means that ventilator is controlled
by CO2 sensor. When turn to “on”, the ventilator is controlled by “humidity and temperature” sensor or
together with the CO2 sensor. if SW4-3 turn to “ON” but without connecting “humidity and temperature” sensor, then E3 error happen.
4. SW4-4 is reserved.
External ON/OFF switch control logic
External switch can receive voltage free signal to control the ventilator on or off.
-Ventilator off, when ventilator have external on signal, ventilator run at high speed, when ventilator
have external off signal, ventilator return back to off.
- Ventilator on, when ventilator have external on signal, ventilator run at high speed, when ventilator
have external off signal, ventilator return back to previous fan speed
20
Eco-Smart ModBus Address
Parameter No.
00 Useless Main control
01 Useless Main control
02 Bypass opening tempera-
03 Bypass opening temperature
04 Defrosting interval 15-99 30 Main control
05 Defrosting enter tempera-
06 Defrost duration time 2-20 10 Main control
07 CO2 sensor 28-C8 (392-1960ppm) 66
08 ModBus address 1- Main control
09 ERV ON/OFF 0-OFF 1-ON Main control
10 Supply fan speed
11 Exhaust fan speed
12 Room temperature observed value Main control
13 Outdoor temperature observed value Main control
Content Range Default Record Posi-
tion
5-30 19 Main control
ture X
2-15 3 Main control
range Y
-9-5 -1 Main control
ture
Main control
(1000p
pm)
Fan speed：
0=stop, 2=speed 1, 3=speed 2,
5=speed 3, 8=speed 4, 9=speed
5,
10=speed 6, 11=speed 7,
12=speed 8, 13=speed 9,
14= speed 10
Fan speed：
0=stop, 2=speed 1, 3=speed 2,
5=speed 3, 8=speed 4, 9=speed
5,
10=speed 6, 11=speed 7,
12=speed 8, 13=speed 9,
14= speed 10
Main control
Main control
14 Exhaust air temperature observed value Main control
15 Defrosting temperature observed value Main control
16 External ON/OFF signal query value Main control
17 CO2 ON/OFF signal query value Main control
18 Fire alarm signal/bypass/
defrosting signal
19 Electrical heater stage Main control
20 Error symbol query value:
21 ERV models selection
22 Defrosting models
21
query value:
B0 – 1-fire alarm ON
B1- 1-bypass on
B2- 1-bypass off
B3- 1- defrosting
B2-OA temperature error
B5-EEPROM error
B4-RA temperature error
B3-Fr temperature error ( auto
defrosting)
Main control
Main control
Maintenance
Power must be isolated before installation and maintenance to avoid injury or electricsshock. Supply
power cables, main circuit breaker and earth leakage protection, must comply with national regulations.
Failure to observe could cause unit failure, electric shock or fire.
Standard filtration is supplied with this unit and must be used. Dust and dirt can accumulate in the heat
exchanger if filters are removed. (This can lead to failure or decreased performance). To ensure efficient
operation, regular cleaning or replacement of filters is required. Filter maintenance frequency will depend on working environment and unit running time.
Fixed Part
Cleaning the filter
1. Open the access door
2. Remove the filters (from the side of the unit)
3. Vacuum the filters to get rid of the dust and dirt. For
bad conditions dip it into water with soft wash to clean.
4. Push the filters to the positions after they get dried
naturally, close the access door.
5. Change the filters if they are badly affected with
dust and dirt or if they are broken.
Turning Direction
Install
Uninstall
Service Board
Maintenance of heat exchanger
1. Pull off the filters first
2. Draw out the exchanger from the unit
3. Establish a cleaner schedule to clean the dust and
dirt on the exchanger.
4. Install the exchanger and filters to their positions
Heat Exchanger
Filter
and close the access door.
Remarks: It is recommended maintenance of the exchanger is made every 3 years
Failure diagnose
User can use the unit after trial operation. Before contacting us, you can make self trouble shooting following below chart in case of any failure.
Phenomenon Possible reason Solutions
The airflow volumes both indoor and outdoor vents drop
obviously after a period of operation.
Noise comes from vents Vents installation are loosing. Re-tightening the vents connec-
Dust and dirt blocking the filter Replace or clean the filter
tions
Unit doesn’t work
1. No electricity
2. Protection breaker is cut
22
1. Guarantee power is on
2. Connect the breaker
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