Cooper & Hunter V Series User manual

Applicable Models (VSeries):
CH-HRV3.5K
CH-HRV5K
CH-HRV8K
CH-HRV10K
CH-HRV15M
CH-HRV20M
Energy Recovery Ventilation
System
Commercial Air Conditioners
Owner's Manual
Thank you for choosing commercial air conditioners.
Please read this Owner’s Manual carefully before operation and retain it for
future reference.
If you have lost the Owner's Manual, please contact the local agent or visit www.
cooperandhunter.com.

Contents
1. Preface ........................................................................................................... 1
2. Introduction to Product ................................................................................... 1
2.1 Main Features ............................................................................................ 1
2.2 Features of Structure.................................................................................. 2
3. Control............................................................................................................ 3
3.1 Operation Instructions ................................................................................ 3
4. Outline Dimensions ........................................................................................ 8
5. Installation Instructions................................................................................... 9
5.1 General....................................................................................................... 9
5.2 Engineering Design .................................................................................... 9
5.3 Installation Diagram.................................................................................. 11
6. On-site Construction..................................................................................... 12
6.1 Installation of the Controller...................................................................... 12
6.2 Fabrication of the Duct ............................................................................ 12
7. On-site Construction Requirements ............................................................. 14
8. Electric Wiring.............................................................................................. 15
8.1 Wiring Installation ..................................................................................... 16
8.2 Grounding................................................................................................. 16
8.3 Trial Run and Routine Maintenance ......................................................... 17
8.4 Troubleshooting........................................................................................ 18
9. Safety Precautions ....................................................................................... 18
10. Technical Datasheet ................................................................................... 20

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1. Preface
This product complies with the national standard GB/T 21087-2007.
Modern civilization has brought more and more adverse effects to our living environment. With
more and more wider application of the air conditioning and kinds of synthetic building materials,
popularization of modern ofce equipment, enhancement of air tightness of the building, reduction
of fresh air volume for energy saving and cost cutting, harmful gases and biologic pollutants inside
the building cannot be diluted or discharged properly. Recently, healthy, energy-saving, simple and
reliable fresh air system and equipment have become the focus for the HVAC engineers and users.
Cooper&Hunter is a perfect solution for problems stated above for its dual-direction ventilation, that
is, it can bring fresh air inside and meanwhile discharge polluted air outside. During ventilation, the
high-efciency heat-recovery equipment can keep the indoor temperature unchangeable.
Besides, the equipped air lter can effectively lter air going inside. In short, new technologies and
new materials make this new product of low energy consumption, excellent performance, now
noise and simple installation etc.
2. Introduction to Product
2.1 Main Features
(1) Dual-ventilation
It can bring fresh air inside and deliver polluted air outside, which makes the users always feel
natural comfort.
(2) Energy Recovery
During ventilation, imported air and exported air will make heat exchanger, and 70% of heat will
be recovered.
(3) Low Noise
The specialized low-noise fan is used.
(4) Air Filtering
The internal air lter can guarantee the imported air clean and dustless.
(5) Large lineup
The large lineup can satisfy various

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2.2 Features of Structure
ERV mainly consists of the main unit and the control.
◆Main Unit
The main unit mainly consists of the centrifugal fan and the heat exchanger. Air before going
inside the heat exchanger will pass through the lter, where dust particles and bers will be sorted
out. The internal air lter can be taken out from the access door. At the joint between the outer
casing and the access door, there is long-lasting sealing material, which can make the whole
cabinet airtight. The hot galvanized steel outer casing and insulation sponge attached to the
external surface can absorb noise produced by the fan and also prevent dewing in summer.
Figure 1 Main Structure of CH-HRV Series

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3. Control
3.1 Operation Instructions
Caution!
◆Do not install the control at the humid area.
◆Do not beat, toss or frequently turn on/off this control.
Figure 2 Front Panel of the Control
1 Timing set point 10 Mode key
2 Energy saving status 11 Humidity increasing key
3 Humidity set point 12 Humidity decreasing key
4 Environment temperature 13 Fan speed key
5Air mode status (fresh air, discharge air,
supply air) 14 Switching key
6 Fan speed status (hi/medium/low) 15 Timing key
7Mode status (Auto, Bypass, Heat
exchange) 16 On/Off key
8 Error status 17 Reset key
9 Filter cleaning status 18 Child lock icon
Note: for CH-HRV15 and CH-HRV20, there is no discharge air and supply air modes for the
item number 5 and fan speed is uncontrolled for the item number 6.

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3.1.1 On/Off
Figure 3
◆By pressing the On/Off key, it is able to start/stop the control.
◆Under the “Off” status, pressing the “Mode” key for 5 seconds can activate the memory
function upon power failure, In this case, when 01 is displayed at the temperature set point
area, it indicates the memory function has been activated. When 02 is displayed, the memory
function has been deactivated. Then, by pressing the ‘On/Off” key, this setting can exit. At
the setting page, if there is not any operation during 20 seconds, the control will back to the
normal “Off” status. The memory function is defaulted to be deactivated.
3.1.2 Control to the Fan Speed
Figure 4 Figure 5
◆As shown in the gure 4, under the fresh air mode, by pressing the “Fan” key, the fan speed
will change circularly from low speed to medium speed to high speed, which however is
unavailable for CH-HRV15 and CH-HRV20.
◆As shown in the gure 5, under discharge or supply air modes, by pressing the “Fan” key, the
fan speed will switch between low and high speed, which is also unavailable for CH-HRV15
and CH-HRV20.

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3.1.3 Control to Humidity
Figure 6
◆For the unit with humidifying function, pressing the “▲” key will increase the humidity set
point; while pressing the “▼” key will decrease the humidity set point. Each press will make
the set point change by 5%.
◆When pressing the “▲” and “▼” keys at the same time for ve seconds, “EE” and a lock icon
will be displayed. In this case, all key operation will be deactivated. Then, by pressing the “▲”
and “▼” keys at the same time for ve seconds again, the lock function will be deactivated.
◆When the control is deactivated by remote monitoring or central control, “CC” will be
displayed and all key operation and remote signals are invalid.
◆The humidity range is 30%-70% (RH).
3.1.4 Switch/Reset
Figure 7
◆When it is required to clean the unit, the beeper will raise an alarm for 30s. In this case, by
pressing the “Reset” key for five seconds, the runtime for cleaning will become zero, the
beeper will stop and the cleaning symbol will disappear.
◆When the unit is turned on, by pressing the “Timer” key and then quickly pressing the “Switch”
key, it will switch to timer for stopping the unit, timer for activating energy saving, timer for
deactivating energy saving, and timer for cleaning circularly.

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3.1.5 Run Mode
Figure 8
◆By pressing the “Mode” key, the run mode will change circularly from automatic to bypass to
heat exchange.
◆Under the automatic mode, “AUTO” will light on and the system will operates base on indoor
and outdoor temperatures as well as the temperature difference.
◆Under the bypass mode, “BYPASS” will light on. When the damper is opened, the fan will
work based on the air mode and fan speed settings. This mode is generally applicable to
transitional seasons and will extend the service life of the heat exchanging core.
◆Under the heat exchange mode, “HEAT EXCHANGE” will light on. When the damper is
closed, the fan will work based on the air mode and fan speed settings. In this mode, it can
realize all heat exchange for fresh air, saving more energy and being much healthier.
3.1.6 Timer
Figure 9
◆When the unit is off, by pressing the “Timer” key, the unit can be timed on. When the unit
is on, by pressing the “Timer” key, the unit can be timed off and energy saving function
and cleaning function can be timed on separately. Under the setting status, “TIMER”, “HR”
and the setting value will blink. At this point, by pressing the “▲” /“▼” key, the setting value
will increase or decrease by 0.5 hours at a time. Then, by pressing the “Timer” key, this
setting will become valid. When the timer works, by pressing the “Timer” key again, it will be

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canceled.
◆The setting rang for timing the unit on/off is 0.5~24 hours.
◆The setting range for timing the energy saving function on is 2~5 hours. The default setting is
2 hours.
◆The setting range for timing the energy saving function off is 1~4 hours. The default setting
is 1 hour. Only when this timing expires, energy saving function can be timed on by pressing
“Fan” and “▼” at the same time for ve seconds.
◆The setting range for timing the cleaning function on/off is 1250 hours, 2500 hours and a
variable to be determined. The default setting is 1250 hours.
◆Only when the timer works, the setting value will decrease with time.
3.1.7 Environment Humidity
◆Generally, it indicates the indoor environment humidity.
Note: for the unit with humidifying function, the humidity will be displayed only when this
function is activated.
3.1.8 Humidifying On/Off
◆By pressing the “Mode” and “▼” key at the same time for five seconds, the humidifying
function will be switched to be on or off alternatively.
◆For the unit with the humidifying function, only it has been activated, both the indoor humidity
and humidity set point will be displayed. This function is defaulted to be off. In the dry
seasons, it is suggested to activate this function.
3.1.9 Air Mode
◆By pressing the “Mode” and “▲” keys at the same time for five seconds, fresh air mode,
discharge air mode and supply air mode can be switched circularly. See gure 2 for more
details. The air mode is decided by the user. When positive pressure is required indoor,
supply air mode is satisfactory. When negative pressure is required, discharge air mode is
favorable. In generally, fresh air mode is satisfactory.
3.1.10 Energy Saving
◆By pressing the “Fan” and “▲” keys at the same time for ve seconds, the energy saving
function can be switched on or off alternatively. When this function has been activated, “SAVE”
will be displayed. When the unit is not required to run for long time, this function can not only
provide fresh air but also guarantee the indoor air quality.
3.1.11 Error Display
♦When some error occurs, “ERROR” and error codes will be displayed.
Error Codes Error Description
E6 Communication error
F0 Indoor temperature sensor error
L1 Humidity sensor error
F3 Outdoor temperature error
L0 Damper error

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3.1.12 Intelligent Start/Stop
◆It is also called the central control for dampers, which are used for multiple rooms but are
under the control the one unit. It can totally control eight dampers. A patching board is
required.
3.1.13 Address Setting
Figure 9
◆When the unit is off, by pressing the “Mode” and “▲” keys at the same time for ve seconds,
it is able to set the address of the control (1~16). At this point, address can be increased
or decreased by pressing the “▲” or “▼” key. This address intends to distinguish different
dampers. The default address is 16. By pressing the “On/Off” key, this setting will exit. When
there is no any key operation in 20 seconds, this setting ends and becomes valid.
4. Outline Dimensions
Fresh air outlet
Fresh air outlet
Polluted air inlet
Polluted air outlet
Figure 10 Outline Dimensions\