NEW ENERGY BKDX30-95I/150/S User manual

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CONTENT
I. Prologue.........................................................................................3
II. Main instruction of product......................................................... 4
IV. Trial running............................................................................. 13
V.Operation panel instruction.........................................................14
VI.Maintenance & Repair.............................................................. 23
VII. Accessories..............................................................................27
◆The floor heating unit must be installed by the professional technician.
◆Please install the machine and connect the water pipe in accordance with this manual
strictly.
◆For safety, please make sure to recheck everything before power on.
◆If the machine has any improvement, the content is subject to change without notice.
Please read this manual carefully before installation and operation.
Applicable models:
BKDX50-200I/150 , BKDX30-95I/150
(Keep this manual for future reference )
Read the manual before operation

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I. Prologue
Thanks for using our products. Please read this manual carefully before installation and
operation. There are information for installation,operation,maintenance,commissioning.
Rigorous design and production standard make sure floor heating water unit running
safely and efficiently as well as excellent reliability and adaptability.
We will not responsible for any loss caused by any nonstandard operation.
The machine should be installed by qualified professional personnel and must be
connected according to the circuit diagram of the machine. The following items should be
focused:
1. Before installation, please confirm if your local voltage is match with the voltage showed on
the machine’s nameplate and if the carrying capacity of the power supply, wires and
sockets are suitable for this machine’s input power;
2. Users are not allowed to change the power cord or socket. Wiring work must be carried out
by a qualified electrician and ensure that the metal part of the machine has a good
grounding, ensure the grounding resistance ≤10Ω. Changing the ground mode is strictly
forbidden;
3. After the completion of the construction of all wiring work, please make sure to recheck
everything before power on;
4. Do not Install the machine in the place which may have leakage of combustible gas;
5. Do not put your hands or foreign objects into the air outlet and fan of the unit. Otherwise, it
will be dangerous to the people and equipment;
6. In order to obtain a better energy-saving effect, the unit should be installed in
well-ventilated places;
7. Water used for this machine must be accordance with the GB standard of living water,
otherwise, if the machine is damaged, we will not take any responsibility.
ATTENTIONS:
1. Please make sure the water systems filled with water before the machine start working and
the drain valve should close.（The top of floor heating must be installed automatic exhaust
valve)
2. When the machine is operating, all the valves of the water systems must be in the open
position.
3. Unit’s water inlet line must be installed detachable type filter, according to the local water
cycle of floor heating pipe adding preservatives and antifreeze;
4. The maintenance of the machine must be carried out by the professional personnel.

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Characters of inverter Floor heating heat pump:
1. Ambient temperature: -25~45℃;
2. Widely used in super market, office building, school, hotel, hospital, leisure center, holiday
village,swimming pool, gym, etc.
3. Controlling by micro computer, all the parameters could be reset, and recheck
automatically, all the running state will be showed on the LCD panel;
4. Concise and beautiful appearance, small floor space, part of the models can choose
built-in pump;
5. This unit made of high quality spare part with world famous brand, its’ service life is longer.
The compressor with automatically unloading function in over high pressure, it also can
adjust the outlet temperature automatically depend on the ambient temperature; the fan
with ultra quite running noise etc;
6. High efficiency heat exchanger, more evaporate paths, larger evaporate square, high
coefficient、wider fin space, better prevent from dust, stable ventilation, better prevent from
frost;
II. Main instruction of product
1.1 Main models and specification parameter of outdoor inverter series：
Outdoor model
BKDX30-95I/150/S
BKDX50-200I/150/S
Voltage（V/Hz/h）
220V/50Hz/1Ph
220V/50Hz/1Ph
Refrigeration
R410A
R410A
Rated heating capacity
8871-32414 (Btu/h)
15354-68240 (Btu/h)
2600-9500W
4500-20000W
Rated hot water capacity
7506-31390 (Btu/h)
13648-61416 (Btu/h)
2200-9200W
4000-19400W
Rated cooling capacity
9212-22519 (Btu/h)
15354-47432 (Btu/h)
2700-6600W
4500-11000W
Heating input power
1000-3100W
2000-5500W
Hot water input power
1000-3100W
2000-5500W
Cooling input power
1000-3100W
2000-5500W
Rated input current(heating)
(4.5-14.0)+13.6 A
(9.0-25.0)+13.6 A
Rated input current(cooling)
3.0-14.0 A
9.0-25.0 A
COP
2.0-4.3 (W/W)
2.0-4.3 (W/W)
EER
2.2-3.2 (W/W)
2.2-3.2 (W/W)
Compressor
Form
dual rotors type
dual rotors type
Quantity
1 pc
1 pc
Fan
Form
Axial
Axial

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Fan
Quantity
1 pcs
2 pcs
Fan
Wind volume
2250 m3/h
5500 m3/h
Air-side heat
exchanger
Form
Thread brass-Hydrophilic
aluminum
Thread brass-Hydrophilic
aluminum
Surface area
35 (m2)
52 (m2)
Rows
2
2
Pipe diameter
3/8 OD (Inch)
3/8 OD (Inch)
Refrigerant
connecting pipe
Inch
φ12.7,φ15.88
φ12.7,φ15.88
Noise level
≤55dB(A)
≤60dB(A)
Outdoor unit Net size
1041*440*920 mm
1081*470*1270 mm
Outdoor unit net weight
95Kg
127Kg
1.2 Main models and specification parameter of indoor inverter series：
Indoor model
BKDX30-95I/150/Y1
BKDX50-200I/150/Y1
Voltage（V/Hz/h）
220V/50Hz/1Ph
220V/50Hz/1Ph
Refrigeration
R410A
R410A
Rated heating capacity
32414 (Btu/h)
68240 (Btu/h)
9500W
20000W
Rated cooling capacity
22519 (Btu/h)
37532 (Btu/h)
6600W
11000W
Auxilary Element power
3000W
3000W
Electric heating control
include
include
Noise level
≤30dB(A)
≤30dB(A)
Water-side
heat
exchanger
Form
Plate heat exchanger
Plate heat exchanger
Water drop
30 kPa
35 kPa
Water pipe
G1” inch
G1” inch
Rated flow rate
2.2 m3/h
3.5 m3/h
Indoor unit Net size
500*240*600 mm
500*240*600 mm
Indoor unit net weight
25Kg
26.5Kg
With the outdoor unit
BKDX30-95I/150/S(*1)
BKDX50-200I/150/S(*1)

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2.1Dimensions:
2.1.1 BKDX30-95I/150/S:
650
920
983
390
440
1041
2.1.2 BKDX50-200I/150/S:
1023
670
1270
420 470
1081

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2.1.3 BKDX30-95I/150/Y1,BKDX50-200I/150/Y1:
500
240
600
120
60
150
120
60
2-G1"
1-G3/4"
180
III. Installation
(1).Installation location
◆Provide sufficient space for installation and maintenance.
◆Inlet and outlet accessibility, strong wind cannot reach
◆Unit installed in ventilation place where can bear the weight of the unit, can mount the
unit horizontally, also will not increase the mechanical noise and vibration.
◆Exhausting air won’t affect the neighbors, no combustible gas leakage.
◆Should have the snow shed in winter.
◆Around the unit need drainage channel to drain condensate out.
◆Installation location should be easy to install, repair and connect.
◆If installed on the roof, it needs to increase measures against typhoons and lightning.
◆Do not install the control panel in the bathroom, in order to avoid moisture to affect the unit
operation.

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(2).Installed in the following locations may cause the machine to malfunction.
◆Places such as cutting oil and other mineral oils.
◆Places with salted air near the sea.
◆Places which contains gas such as sulfur, acidic or alkaline and other corrosive gases
in the spa area.
◆The place is with seriously voltage fluctuations and have strong electromagnetic waves.
◆Kitchen and other places which are full of oil odor, and oil trace.
(3).Unit infrastructure installation
Units can be installed base of concrete structures, and steel brackets can also be used to
install, basic surface is roughness (basic is designed according to the operational quality and
according to the technical performance parameters table). Under the unit, should install the
vibration damping rubber, and fix with bolts. Adjust the unit installation level, tilt <2 degrees.
On the ground should have the drains for unit's condensate.
Notice: When installing circulating pump outside of the unit, the warm water pipes use
which according to the heat pump’s specification, all pipes should do thermal
insulation. The unit is suitable for single-floor, if for multi-layer use, it must install
circulation pump outside and confirmed by the distributor.

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(4).Selection circulation pipeline.
Circulation pipeline of inverter heat pump can not be smaller than the inlet and outlet pipeline,
circulation pipe should use the same diameter as inlet and outlet pipes.
(5).Connection of pipeline
Don't let the dust and other debris into piping system.
Doing the plumbing work after fixing the unit firmly.
A removable filter （40 ～60mesh ）must be installed at the water inlet and please
regular clean the valve depend on your local water quality.
Install a drain valve in the lowest point of the pipe, for convenient cleaning, Ensure
smooth access level, Can not alternately up and down, for discharge the air and
draining the water in the pipe out.
Install the union valve at the water inlet/outlet, for convenient maintaining. Should fix
the valve on water pipe of the unit. Rotating the water pipe, water connecting can’t
withstand rotation torsion directly.
Outlet and inlet water pipes should do thermal insulation well, the distance of outlet
and inlet need to apart, for first time to use, should add the appropriate amount of
antifreeze and anti corrosive into the warming water pipes, the input water pipe and
water tank can do water replenishment according to the actual situation.
Do not shut off the power in winter. If do not use for a long time, should drain off the
water in the unit and water pipes, to prevent heat exchanger or water pipe freeze and
crack.
Select pipe material, can choose stainless steel, copper, aluminum hot water pipes, hot
water PPR pipes, etc., with pipes in national health and safety standards,
heat-resistant, rust-proof, not easy to scale.
Reasonable pipe layout, to minimize bending and reduce the pressure loss of the
water system.
After the circulating water system connected, must do pipeline connection rigidity and
add water pressure inspection, and sewage, to ensure the system clean. Past the
inspection,no leakage, then pack insulation for pipeline and valves.
Metal pipe must use with more than 50mm thick glass fiber or high density,
fire-retardant insulation sponge. (PPR hot water pipes can be used 30mm thickness of
glass fiber or high density fire-retardant sponge rubber insulation.)
Must install thermometer and water pressure gauge on Inlet and outlet water pipes,to
inspect during operation.

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(6). Installation schematic diagram
1.1, BKDX50-200I/150/S
1.2, BKDX30-95I/150/S
Notice: 1)Distribution piping pressure test should be a separate, do not with hot
water units, tank pressure test together.
2)Working pressure of water system is 0.2-0.6Mpa.

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(7). Electrical Installation
Electrical wiring installation requirements：
1. Appliance installation wiring should be installed in accordance with national wiring
rules;
2. Inverter floor heating pump unit should use a dedicated power supply, power supply
voltage matches the rated voltage;
3. Inverter floor heating pump unit power supply circuit must have a ground wire and
grounding resistance of less than 0.1Ω;
4. Construction wiring must be installed by a professional technician for construction in
accordance with the circuit diagram;
5. Set up electricity leakage protection device according to the technical standards of
electrical equipment;
6. Power lines and signal lines should be neatly arranged, reasonable, can not interfere
with each other. Please reference the provisions of the power cord when the optional power
supply specifications, avoid two wires SPIDERS;
7. After all wiring construction is completed, after careful inspection before power on.
Notice:1)Water can be flow out from the drain pipe in the pressure relief device, and To
keep drain open to atmosphere.
2)Pressure relief devices regularly running to remove calcium carbonate
sediments and ensure device is not blocked.
3)when install check valve, filter and pressure relief devices, the valve arrow
should have same direction as water flow.
4)The discharge pipe for pressure relief device should be install in frostless
environment in a continuous downward way.
Notice: When the power lines and control lines in parallel, set strong electric wires and
weak signal line (control panel line respectively penetrate the into each wire tube,
absolutely not penetrate the signal line and the strong electric wires in the same conduit,
to avoid the unit operator panel does not display properly.

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Power supply wiring line (wire diameter selection) reference table：
1. Power wiring is control board’s wiring system to the diameter of the branch wiring
devices reference value of each unit and circulating pump units.
2.Selection for the main Line is base on 1.25 times of the sum power of simultaneously
operating device in the whole heating system
2. Unit should be separate with a independent electricity leakage protection switch, does
not allow to use one electricity leakage protection switch for multiple units
3. The unit use 220VAC 50Hz power supply, for BKDX50-200I/150: main power line’s
length ≤4 meters, the diameter selection is 6mm2; for BKDX30-95 I/1503, main power
line’s length ≤4 meters, the diameter selection is 4mm2.
Notice：①Unit with no power cord and plug, the user should use which follow the above
power cord specification. ②Connect the power cord to the unit corresponding wiring
terminal.③Above wiring’s diameter and length represents the magnitude of the voltage
drop within 2% of the cases. ④When the wiring length exceeds the above value,
increase the wire diameter.⑤Please select the wire diameter for water pump follow state
regulations based on the actual power of the pump.⑥Fixed-line for unit connection must
be equipped with at least 6mm2 all-pole disconnect device contacts open pitch.

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IV. Trial running
1.Trial running must after all the installation completed.
2.Please confirm the following matters before the trial operation, put “√”in the boxes after
confirmation
▲Unit is installed correctly
▲Power supply meets unit’s rated power source need
▲Piping and wiring are correctly installed
▲Unit air inlet/outlet well-ventilated
▲Drain off water is done well
▲Leakage protective device act effectively
▲Pipe thermal insulation
▲Grounding wire connected correctly
3.After check and ensure correct, then power on. If the control panel display nothing, that
should recheck and tight the line of control panel. The control panel should display time,
setting temperature and the current temperature.
4.Discharge the air out of the pipelines , and then press ON/OFF button, the unit work under
the setting temperature, unit’s trial running would check the following:
▲First time to run the device, check the current normal or not;
▲Operation panel’s function keys are normal or not;
▲The indicator light is normal or not;
▲The whole circulating hot water system whether has water leakage;
▲The condensed water discharge is normal or not;
▲System’s pressure is normal or not (according to the high water temperature or low
pressure);
▲Whether there is abnormal sound and vibration when unit running;
▲The wind, sound and condensed water from unit whether effect neighborhood;
▲Whether there is leakage of refrigerant.
Notice:There is a delay protection for unit’s reboot, e.g.: an immediate start or restart, the
unit have protection function required delay 3 minutes to restart to protect the
compressor.

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V.Operation panel instruction
1. Indoor line control panel
2.Key Functions:
Notice ：Wired control panel automatically locked without any key operation after 30S, the
display showed the key lock , press and button to lock or unlock.
1.1. ON / OFF button:
Press to turn on / off the unit.
1.2. MODE:
1.1.1, Press to switch between room heating, water heating, room cooling, automatic
mode 1 (room heating, water heating) and automatic mode 2 (room cooling, water heating),
the corresponding icon will be lit up.
1.2.1, In the main interface long shutdown state, press " " button for 3 seconds to enter
the refrigerant recovery(force defrost function) modes, the display icon flashes,

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then press " " key 3 seconds or press " " key to exit the refrigerant recovery modes, the
icon does not display.
1.3. Clock setting button:
1.3.1 Setting the clock (hours: minutes)
Press " " button, flashing signs, flashing minute display area, press again,
hour flashing, press "UP", "DOWN" to adjust the clock, press " ", you can determine the
clock time, or in the absence of automatically determine the key operation 10 seconds after
the clock time, exit the clock adjustment;
1.3.2 Set the timer
Tap the " " button to display the last set timing, flashing signs, flashing minute
display area, and then tap again " " button, the hour display area flashing, you can "UP",
"DOWN" to adjust the timing to open time, there are changes to the timing clock on time to
open a clock, and then tap the " " key again, you can determine the timing of the opening
period, signs lit, (Note: at this time will enter the timer off setting state), Without any
key operations for 10 seconds determines the timer on period automatically, signs lit
exit timer on setting.
After setting the timer on ,press the " " button to display the last set timer off time,
flashing signs, minute display area flashing, press the " " button, hour flashing display area,
you can "UP", "DOWN" to adjust the timing off time, there is time off when you change the
time clock on the clock, and then press " " key, you can determine the timing off time,
sign lit, press the " " key, you can determine the timing off time, Without any key
operations for 10 seconds determines the timer off period automatically, signs lit,

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Always exit timer off time setting.
1.3.3 Cancel the timer
After setting the timing, at unlocked state, press " " key to cancel the timer.
1.4. UP key:
UP control key.
1.5. DOWN key:
DOWN control key.
1.6. Set temperature adjustment
When non-automatic mode, simply press , enter to adjust the set temperature
corresponding mode; in automatic mode, press enter 、to adjust the temperature
setting of the current mode and the corresponding mode icon flashes on behalf of this mode
is set temperature, another mode icon lit; press " " key to switch to adjust the automatic
mode to another mode setting temperature.
2. Function
2.1 Running Status
Press " " and " " together for 3 seconds to enter data viewing interface, adjust with "UP",
"DOWN".
Choose the value of d, d value flashes, with the "UP", "DOWN" button to view cycle. 10
seconds no operation or short press " " to exit the Data View interface.
d01. Frequency
d02. Current value
d03. Return water temperature
d04. Tank temperature
d05. Water pipe temperature
d06. Reserved
d07. Compressor outlet gas temperature
d08. Outdoor ambient temperature
d09. Outdoor evaporator temperature
d10. Compressor inlet gas temperature

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d11. After throttling temperature
d12 Electronic expansion valve opening（displayed as the actual opening）
2.2 Timing function
2.2.1 Timing maximum range is 24 hours, a minimum resolution of 1min.
2.2.2 Regular boot function: When turned off, to set the timer on in automatic boot time, if
already in the boot state, without treatment.
2.2.3 Sleep timer function: When running status to set the timer off automatically, if already in
a shutdown state, without treatment.
2.2.4 Repeat Timer function effectively only when the operation "ON / OFF" key to cancel the
timer function.
2.2.5 Timing error is less than 1 min / h.
Notice: Timing is calculated based on the time clock.
3. Display Function
3.1 Display Function explain
3.1.1 When the unit power on first time，the display panel is lit, after normal display, the
status display will display last power failure status, display the clock in the standby mode.
Booted in main interface there are set temperature, real-time temperature, shift automatically
follow the mode.
3.1.2 Tank mode display tank setting temperature, current water temperature. Use " ",
" " button to set the tank setting temperature.
3.1.3 Heating mode when selecting floor heating, display setting temperature, return water
temperature. Use " ", " " button to adjust the temperature setting.
3.1.4 Cooling mode display setting temperature, return water temperature. Use " " " "
button to adjust the temperature setting.
3.1.5 Automatic mode according to the actual operation mode display the setting temperature
of room or tank mode, current temperature with the actual operating mode display or return
water tank temperature. In turn on status can not be used " " " "" button to adjust the
set temperature.
3.1.6 Backlight
When key operation, the backlight is lit, if there is no key action within one minute, the

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backlight turns off.
3.1.7 Display mode, the measured temperature ：Depending on the operating mode
corresponding to the display, in automatic mode, the temperature display to indicate the tank
temperature, when the water temperature to the temperature, the display mode the measured
temperature of the room.
3.1.8 When set to automatic mode, the display alternately every two seconds tank mode
setting and actual temperature, backwater setting temperature and actual temperature, the
corresponding mode icon also turns lights off and another mode icon.
3.1.9 When a fault is displayed, every two seconds turns the display settings and measured
temperature fault code setting mode.
4. Power outage memory
You can switch the state of the memory operation mode, parameter setting, timing and clock,
when the switch machine state, operating mode, parameter setting, timing changes two
seconds after the wired remote control began to rewrite the EEPROM, memory data when
power is turned on when more than one state when power starts running.
Notice：Refrigerant recovery function has no memory.
5. Parameter setting
Touch “ ”and” ” together for 3 seconds to enter parameter setting state, the parameter
serial number blinks, touch the " " and " " button to check value. Then touch the " "
button,the parameter content blinks,touch the " " and " " button to modify value.Finally
use " " to save and exit the status.Touch " " or without operation in 20s then will back to
normal status.
Parameters No.
Introductions
Adjust Range
Defaults
Remark
P1
Tank setting temp.
35℃～60℃
55
P2
Heating setting temp.
20℃～60℃
45
P3
Cooling setting temp.
10℃～20℃
12
P4
Water tank temp.difference for hot
water heating restarted
0℃～15℃
4
P5
Heating and cooling temp. difference
for restarted
0℃～15℃
3

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P6
Thermostat temperature difference
0℃~5℃
2
P7
Electric heater starts time
1~120 minutes
15
P8
Electric heater starts ambient
temperature setting value
-20~20℃
0
P9
Accumulated defrost time setting
1~120 minutes
45
P10
The heating mode enter into the
defrost ambient temperature
1～25℃
15
P11
Start defrost of the ambient
temperature and coil temperature
difference
1～25℃
3
P12
Enter the defrost coil temperature
-20~20℃
-3
P13
The heating exit defrost temperature
1～25℃
15
P14
The maximum defrost time
1～25℃
10
P15
Heating and cooling mode water
pump operation mode
0,1,2
1
0=stop running
1=timer running
2=always running
P16
Heating and cooling mode water
pump operation interval time
0～25minutes
5
P17
Outdoor fan corresponding to the
ambient temperature set value
0~35℃
28
reserve
P18
The maximum operating frequency
of the inverter compressor
50~100Hz
100
reserve
P19
Electronic expansion valve
maximum opening
250~480pulse
480
reserve
P20
Electronic expansion valve minimum
opening
60~250pulse
60
reserve
P21
Compressor manual frequency
10~100Hz
50
manual only
P22
Electronic expansion valve manual
opening
60~480pulse
350
manual only
P23
Compressor frequency adjustment
mode
0,1
0
0=automatic
1=manual
P24
Electronic expansion valve
adjustment mode
0,1
0
0=automatic
1=manual
P25
Linkage switch
0,1
0
0=Invalid
1=valid
P26
reserve
P27
reserve
P28
reserve

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P29
reserve
P30
Antifreeze switch
0,1
0
0=Invalid
1=valid
P31
Model parameter selection
0~7
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6. Unit fault code table
Fault code
No.
Fault Name
E01
Outdoor unit current protection
E02
Flow switch protection
E03
EEPROM error indication (indoor board) / EEPROM error indication
(operation panel)
E04
Return water temperature over high when heating or output water
temperature over low when cooling
E05
DC link voltage is over high / low protection
E06
IPM failure
E08
Output and input water temperature different too large protection
E09
Communication error ( indoor board and outdoor board)
E10
Return water temp sensor fault
E11
Output water temp sensor fault
E12
Tank temp sensor fault
E13
Ambient temp sensor fault
E14
Evaporator temp sensor fault
E18
Compressor outlet gas temp sensor fault
E21
Compressor outlet gas temperature over high
E25
Evaporator coil temperature too high when cooling model
E31
System pressure over high protection
E32
Communication error (operation panel & indoor board)
E33
Communication error (IPM & outdoor board)
E41
System pressure over low protection
E44
Winter unit standby antifreeze protection
E45
Return gas temp sensor fault
E46
Temp sensor fault after throttle
E47
Water tank temperature sensor abnormal protection
E48
Antifreeze switch disconnect failure