FlexPro AEH/18 Operational Instructions

Air to water heat pump

Operational Instructions

Model: AEH/

18

General Specifications

Rated heating capacity:

18.4

kW

Rated cooling capacity: 12kW (option)

Average heating input power:

4

.6kW

Rated current: 9 A

Power Supply: 220V or 380V

Compressor: COPELAND

Refrigerant: R407C

Hot water flow: 5 000 L/h

Hot water supply:

40

0 L/h

Water connection: DN25

Max outlet water temperature: 60°C

Noise:

55

Db

Dimensions: 1120 x 490 x 1270mm

Weight: ~1 75 kg

Packing Dimensions: 1200 x 520 x 1425mm

Recommended heating surface: 150 sqm

Air to water heat pump operation manual

Ⅰ、 Summarize

The controller fir for single or double compressor(single phase& three phase) air source , direct outlet hot water or circulating heating type heat pump water heater. The control system consists of main board, control panel, thermostat(optional).

Ⅱ、

Main

1.

Use

Operating voltage:

Operating environmental temperature:

Store temperature:

Relative humidity:

2.

Temperature control precision 1 ℃

AC220

～

240V/380

～

410V±10%, 50Hz

～

60Hz

±

1Hz

-20

～

+75

℃

-30 ～ +80 ℃

0 ～ 95 ％ RH

3.

The

□ GB4706.1-1998 “Household and similar electric equipment’s safety part 1—currency requirement

□ GB4706.32-1996 “Household and similar electric equipment’s safety , heat pump, air conditioner and dehumidifier’s special requirement

□ GB18430.1-2001 “Steam compressor cycle cooling water heat pump machine suit for industry and commerce using and relevant using

□ GB18430.2-2001 “Steam compress cycle cooling water heat pump machine, household and similar purpose cooling water (heat pump) units.”

□ Anti-jamming degree complies with GB4343. 2-1999

□

Printed Circuit Board comply with GB4588.1 and GB4588.2’s rule

Ⅲ、 The

1 Heating and/or cooling water function

2 Show Water tank temperatures , preset temperatures, running state, output state, clock and so on.

3.

Can inquire about evaporator pipe temp, environmental temp,exhaust temp, return gas temp, outlet water temp, return water temp, current of compressor, electric expansion valve opening, error code and so on.

4 Automatically remember all parameters, if power off, and resume running automatically after power on.

5.

Clock work on after power off, needn’t readjust every time.

6.

Turn on/off at two certain period of time within 24 hours.

7.

Supply hot water at two certain period of time within 24 hours.

8.

Amend running parameters to be best at all kinds of working condition.

9.

Electric expansion valve is controled automatically(according to the degreee of superheat to adjust in time)

10.

Automatically defrosting function(it has dropping water function when defrosting)

11.

Forced defrosting function.

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Air to water heat pump operation manual

12.

Key-press locked automatically.

13.

Function of time limited via password

14.

Huge LCD with blue background and white words showing.

15.

Perfect protect function (lack of phase and wrong pahse protection of 3-phase supply, compressor over current protection, high pressure protection, low pressure protection, lack of water protection and so on).

16

.High ,middle,low water level sensor test showing on control panel

17.

Function of supply water automatically (can supply water according to temp, also can supply water not according to temp )

18.

Return water function

19.

Anti-frost function

20.

Heat pump can indentify automatically and start up to heat water under the condition of without control panel (or control panel is broken)

Ⅳ 、 main board

Low water level switch(lead or probe) high water level switch(lead or probe) high pressure switch

Water pressure switch

Circulating pump(contact current20A)

Fan motor (contact current 8A)

Compressor (contact current 20A)

Crankcase Heating (contact current 8A)

Hot water supply pump(contact current 8A) middle water level switch(lead or probe)

Low pressure switch water flow switch

Three phase AC-A,B,C auxiliary electric heating(contact current 8A) water Suppy valve (contact current 8A)

Four way valve(contact current 8A)

Return water pump(contact current 8A)

Water tank temperature(range of measure:0-160 dc ),

Evaporator pipe coil temperature(range of measure:-30-110 dc)

Return gas temperature(range of measure:-30-110 dc)

Exhaust temperature(range of measure:0-160 dc)

Environmental temperature(range of measure:-30-110 dc)

Outlet water temperatuer(range of measure: 0-160 dc)

Return water temperature (range of measure: 0-160 dc)

Compressor current(range of measure: 0-30 A)

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Ⅴ、 ccccon p an

1

， ccccon p an

Air to water heat pump operation manual tem water perature tem s e

1 2 3 4 5 6 7

8

2

，

Operate

Control panel power-on, buzzer give a long ringing ,LCD displayes, background light give micro light, now, the key-press are locked, it is ineffective to touch any key.

2

．

1 Unlock key-press: touch “power” key by finger for more than 3 seconds, after hear “toot” sound,move away finger, now background light give high light, key-press are unlocked, key-locked signal disappear (60s later, if any key isn’t pressed, key can be locked automatically, key-locked signal display) .

2

．

2 On/off Touch “power” key by finger, if control panel is under ON state, then power off, if control panel under

2

．

3

OFF state, then power on.

Water temperature setting

：

Touch

“ ▲ ”，“ set temperature”signal flash and display the preset temperature of water tank, touch “

▲” again, the preset temperature of water tank increase. Touch

“ ▼ ”，

“ set temperature”signal flash and display the preset temperature of water tank, touch “

▼ ” again, the preset

2

．

4 temperature of water tank decrease. The setting range of water tank is 20

℃ to 60

℃

.

time setting

：

Touch “timer”key, enter definite time setting state.

First adjust the “hour” of the first period of definite time for power-on, then touch”timer” key again, then adjust the “minute” of the first period of definite time for power-on, touch “ timer “ key again, then adjust the

“hour”of the first period of definite time for power-off, touch “timer”key again, then adjust the “minute” of the first period of definite time for power-off. Touch “timer”key again, enter the second definite time setting, the operation is the same as the first definite time setting,until finish all the definite time setting, then quit setting.

After quit definite time setting, it display the

ON and

OFF signal.

2 ． 4 ． 1 definite time ： Press “ tim er “ key for 3s, hear a “toot”voice, then move away finger, then definite

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Air to water heat pump operation manual

2

．

5 time setting canceld

Clock setting

： press “timer”key for 3s, hear a “toot” voice, press continuingly, after press the “timer”key for 8s, when hear “toot” voice again, then move away finger, enter clock setting state,

First adjust the “hour ” of clock, press “timer” key again, then adjust “minute” of clock, press “timer” key again, then finish setting and quit setting.

2

．

6

Note: clock setting just can be operated under the condition of there isn’t definite time set.

Force defrosting

： after the heat pump was power on and the compressor has started, then press

“▼ ” over 8s, when hear a “toot” voice, move away finger, then enter defrost state, when the temperature of coil

（ evaporator

） or defrosting time reach preset parameter, then quit defrost.

2

．

7 Cooling mode

： Under heating water mode, press “

▲ ” key over 8s, then hear a “toot” voice, enter cooling mode. Range of water temperature adjusting: 7

℃

-30

℃， under cooling mode, then press

“ ▲ ” over 8s, enter heating mode.

Parameter setting and inquiry

（

attached table 1

）

A ： function

Under power on state, press “setting” key, inquiry code is from A1 to A9, if single compressor heat pump, press “setting” key again, then quit inquiry state, if double compressor heat pump, another 9 inquiry code can be inquired, from b1 to b9, press “setting” key again, quit inquiry state. Please check following stable

：

Code Meaning( double syst) Meaning( double syst

Heat pump)

A1 Coil(evaporator) temperature Coil(evaporator) temperature 1

A2 Return gas temperature

A3 Exhaust temperature

A4 Environment temperature

A5 Outlet water temperature

Return gas temperature1

Exhaust temperature 1

Environment temperature

Outlet water temperature

A6 Return water temperature

A7 00

A8 Compressor current

A9 Opening angle of expansion valve

Er Display of error code

Return water temperature

00

Compressor current 1

Opening angle of expansion valve1

Display of error code b1 b2 b3 b4 b5 b6 b7

Coil(evaporator) temperature

00

2

Return gas temperature 2

Exhaust temperature 2

Environment temperature

Outlet water temperature

Return water temperature b8 Compressor current 2 b9 Opening angle of expansion valve1

Er Display of error code

B ： function

Under power on state, press “setting” key over 3s, when hear “toot” voice ,move away finger, enter parameter setting state, after parameter set, press “setting” key ,enter next parameter setting, until all the setting of parameters are finished ,then quit setting.

Set code

/

L1

L2

/ /

Parameter name

Water tank temperature range

20 ℃─ 60 ℃

0 ℃─

15

℃ Temp differentce between water tank real temp and display temp

Temp difference between compressor stard restart 18 ℃ temp and preset water tank temp

Initial

50 ℃

0 ℃

5 ℃

P4

p5

P6

L6

L7

L8 h1 h2 h3 h4 p1 p2 p3 p4

L3

L4

L5

Air to water heat pump operation manual

35 ℃─

99

℃ Outlet water temp setting(only for instant heating mode)

Water tank temp upper limit setting environment temp at which electric heating startup

Return water temperture

Temp at which cool water supply allowed

Compressor current

Cycle of defrost

Temp of enter defrosting

Runtime of defrost

Temp of quit defrosting

Cycle of electric expansion valve regulating

Degree of superheat

Exhaust temp allowed protect

Electric expansion valve opening angle when defrosting

Min opening angle of electric expansion valve

Compensation of superheat degree

55 ℃

30

0

℃─

℃─

99

35

℃

℃

60 ℃ (swimming pool heat pump is 45

℃

)

0 （ 0 mean no electric heat ）

30 ℃─

65

℃ 45 ℃

20 ℃─

60

℃ 20 ℃

( 20 ℃ means cool water can’t be supplied)

0-48A

20 ─ 99min

-15 ℃─

1

℃

0(0 means not detect )

35min

-1 ℃

5-20min

1 ℃─ 40 ℃

20-180S

-8 ─

15

℃

70 ℃─ 135 ℃

6-55degree

10min

20

℃

30s

0

90 ℃

50 degree

6-30degree

0-12 ℃

15 degree

4 ℃

C

：

Error

Code and alarm

：

Description of fault of single compressor system

01E wrong phase

02E Lack of phase

03E Water flow switch

05E High pressure

06E Low pressure

07E

08E

09E Communication

11E Limit time

12E Exhaust temperature too high

Code Description of fault of

01E

02E

03E double compressor system wrong phase

Lack of phase

Water flow switch

05E High pressure 1

06E Low pressure 1

07E High pressure 2

08E Low pressure 2

09E Communication

11E Limit time

12E Exhaust temperature 1 too high

13E

15E Water tank temp sensor damaged

13E Exhaust temperature 2 too high

15E Water tank sensor damaged

16E coil pipe(evaporator)sensor damaged 16E coil pipe(evaporator)sensor1damaged

17E 17E coil pipe(evaporator)sensor 2damaged

18E Exhaust sensor damaged

19E

18E Exhaust sensor1 damaged

19E Exhaust sensor 2 damaged

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Air to water heat pump operation manual

21E Environment sensor damaged

22E Return water sensor damaged

23E

25E Water level switch damaged

26E

27E Outlet water sensor damaged

28E

29E Return gas sensor damaged

30E

31E Water pressure switch damaged

32E Cooling water temp too low

33E

34E

35E Compressor over current

36E

21E Enviormnet sensor damaged

22E Return water sensor damaged

23E

25E Water level switch damaged

26E

27E Outlet water sensor1 damaged

28E Outlet water sensor2 damaged

29E Return gas sensor1 damaged

30E Return gas sensor 2 damaged

31E Water pressure switch damaged

32E Cooling water temp too low

33E

34E

35E compressor 1 over current

36E compressor 2 over current

Ⅵ、 function

1 ． H eating

1.1

hydronic heating

1.1.1 flowsheet of hydronic heating power on → water level switch test → water pressure switch test → cycle water pump work(16s) → water flow switch test → fan work （ 6s ）→ compressor work （ when low water level disconnect ， cool water supply switch on, compressor 、 fan 、 cycle water pump work.

1.1.2

、 Cool water supply controlling

（ 1 ） when low water level switch disconnected, cool water supply switch on and begin supply water, cycle water pump startup, fan off, compressor off.

（ 2 ） when low water level switch on, cycle water pump on, fan on,compressor on, hydronic heating begin.

meanwhile water supply valve begin to supply water according to the preset water supply temp L7.

： if water tank temperature ≥ L7 ， water supply valve open ， supply water ； if water tank temperature ≤ L7-5degree ， water supply valve close ， stop supplying water.

（ 3 ） after high water level close up, stop supplying water. If high water level has closed up before, when it disconnect again, not supply water at once, it will supply water until middle water level disconnect.

Notice: ： if L7=20 ℃ ,water supply is not controled by water temperature.

1.1.3

、 water temperature controlling

Range of water temperature controlling ： 35-60 ℃，

1.1.4 Running controlling

ON

OFF

L2 preset water temperature water temperature

1.2 Instantly heating

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Air to water heat pump operation manual

1.2.1 Power on

→ water pressure switch test

→ open water supply valve to supply water

→ fan on

→ compressor on, after high water level connected, water supply valve close, if water tank temperature doesn’t reach preset temperature, cycle water pump on, water was heating to preset temperature circularly, then power off.

1.3 Supply water controlling

（

1)when high

、 middle

、 low water level switches all disconnect, water supply valve supply water, then check water pressure switch, if water pressure switch is closed up, then fan on, compressor on, thermostat on, begin to supply water untill high water level switch closed up, thermostat and water supply valve close ,stop supplying water.

（

2

） if high water level switch have been closed up, when the high water level switch disconnect, it will not supply water at once, it must untill middle water level disconnect. Then water supply valve on, fan on, compressor on, thermostat on.

1.4 Water temperature controlling

Range of water temperature controlling: 35-65

℃

, when preset temperature reach 60

℃

, if want to set the water temperature

＞

60

℃

, press

▲ key over 6s , when hearing a “toot” voice , move away finger , press

▲ key again, now the max water temperature can be set at 65

℃

.

1.4.1 Running controlling

ON

OFF

Low water level high water level

2.1

Condition of auxiliary electricity heating startup

A. under heating hot water state;

B. water tank temperature +5

℃≤ preset temperature

C. water tank temperature

＜

45

℃

;

D. environmental temperature

≤

L5

All of the above conditions are met at the same time, the auxiliary electric heating startup.

2.2

Condition of auxiliary electricity heating stop.

A. under forced defrosting state;

B. water tank temperature

≥ preset temperature

C. water tank temperature

≥

50

℃

D. environmental temperature

＞

L5

Any one of above conditions is met, the auxiliary electric heating will stop

3

、

Defrosting

（ at the condition of parameters are not changed, the default defrosting process of system is following ， if need amending, then defrosting will be according to the amended method ）

3.1

、 conditions of enter defrosting

A,cumulative runtime of compressor reach 35 minutes when heating, and continuing runtime over 6 minutes

B,evaporator copper pipe temperature under h2 (the original valueis -1 ℃ ,changeable) ；

If both A,B conditions are met,then enter defrosting, from beginning to the end of defrosting, LCD display defrosting signal. (when defrosting, cycle water pump on,4-way valve on, compressor on,fan off,thermostat off) 。

C,Running state when defrost:

Compressor off, fan off, postpone 50s , 4-way valve open, postpone 40s still ,compressor on,cycle water pump on.

3.2

、 conditions of quit defrosting

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Air to water heat pump operation manual

A: Evaporator coil pipe temperature

≥ h4 (original value is 12

℃

, changeable)

B:Defrosting time

≥ h3 ( orgininal value is 10 minutes, changeable)

Note: any one of above condition is met, System quit from defrosting, specific action and time sequence as following chart:

C:Running state: compressor off, fan on, postpone 60S, four way valve off, postpone30s still, compresor on, cycle water pump on.

3.3 forced defrosting

Under the condition of power on, and compressor startup to heating water, Touch

▼ key over 8s, when hear a

“toot“voice, move away finger, enter forced defrosting state at once, when forced defrosting meet preset time or preset temperature, system quit from forced defrosting state automatically, enter normal heating hot water state.

After heat pump power on, touch

▲ key for over 8s, when hear a “toot ” voice, move away finger, enter cooling water mode, touche

▲ key again for over 8s, when hear “toot ” voice, move away finger, then enter heat hot water mode.

Water pump turn on when heat pump running, if heat pump stop, postpone 30s, then water pump stop (if select instantly heating mode, when water supply valve and thermostat turn on, then cycle water pump turned off, it just turn on when the water in tank need to reheat) .

4-way valve turn off at normal heating water state, it just turn on when defrost. But if cooling water, it turn on.

Refer water supply controlling (when defrosting, it doesn’t supply water )

When environment temperature < 8

℃

, crankcase turns on, when compressor startup, crankcase heating stop. if compressor don’t run within one hour, crankcase heating turns on; When invironment temprerature

≥

8

℃

, crankcase heating stop.

The condition of return water valve open

A. Low water level switch on

B. Water tank temperature ≥ L6+5 ℃

B. Return water temperature ≤≤ L6

D. The preset interval time of water return is reach.

Above conditions are met at the same time, return water valve open.

The condition of return water valve close:

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Air to water heat pump operation manual

When retrun water temperature

≥

L6, return water valve close.

Under the condition of no control panel or control panel is damaged, system check about 1 minute, confirm there is not control panel enter automatical controlling.

When run automatically:

Water tank preset temperature =55

℃

Preset outlet water temp of direct outlet water=50

℃

Deviation value of Water tank temprerature =0

Temp difference at which Compressor can restart after compressor stop = 5

℃

Period of defrosting=35minutes

Temperature at which system enter defrost state = -5

℃

Defrost runtime = 8 minutes

Temperature at which system quit defrost state =20

℃

Temperature at which electric heating startup=10

℃

Return water temperture=45

℃

Water supply temperature=40

℃

Degree of superheat=0

℃

Non check compressor current.

Ⅶ、

Protection illustration

1

、

Pretection of compressor postpones 3 minutes, both compressor turn on and off need 3 minutes. every time, compressor needs 3 minutes to restart after it stoped.

2

、

Water flow switch protection (hydronic heating system use it ). After press

“ power

” key, and cycle water pump run, if water flow switch off, then compressor and fan off.

3

、

High exhaust temperature pretection: when exhaust temperature

≥

115

℃ and last 30s, system consider temperation is too high, close output, display error code, 3 minutes later system can restart.

4

、

High pressure protection

： when high pressure switch disconnect 3 times within an hour, display panel show error code and alarm. Then compressor off, fan off, cycle water pump off. After high pressure switch recover , postpone 3 minutes ,compressor restart, If high pressure switch disconnect over 3 times within an hour, control panel lock the error, turn off all output signal, and will not restart whether pressure switch will recover or not.

5

、

Low pressure protection. when low pressure switch disconnect 3 times within an hour, display panel show error code and alarm. Then compressor off, fan off, cycle water pump off. After low pressure switch recover, postpone

3 minutes, compressor restart. If low pressure switch disconnect over 3 times within an hour, control panel will lock the error, close all output signal, and will not restart whether pressure switch will recover or not..(Remarks:when defrosting, or within 5 minutes after compressor startup, system doesn’t test low pressure switch)

6 、 Sensor error: if sensor occure error(broken circuit or short circuit), all output stop, and show error code. Sensor can restart after erroe disappear.

7 、 Three phase protection ： when dial switch 1 select number side, it has three phase test function, it will test three

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Air to water heat pump operation manual phase supply as soon as power on. If lack of phase or wrong phase , system will enter three phase protection, turn off all output and show error code, it will recover only when trouble removaled and power on again.

8

、

Anti-frost protection: when environment temperature

≤

5

℃， if compressor under stopping state over 30 minutes, then cycle water pump will start and run 30S.( cycle water pump work 30s per 30 minutes)

9

、

Water pressure switch protection: cool water supply magnet valve open, after controller detected water pressure switch off for 6s continuingly, turn off all output, show error code, untill water pressure switch on. System will restart 3 minutes later

10

、

Compressor over current protection: after compressor started and runs for 6s, test compressor current, if compressor current

≥

L8 and last 6s, turn off all output, if the over current is caused by lack of phase ,then the control panel will show lack of phase error code and alarm, system will restart after fault removaled.

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Ⅷ、 single

Air to water heat pump operation manual

Remarks:

Dial switch 1 select ON side is single-phase supply, select number side is three-phase supply.

Dial switch 2 select ON side is common heat pump, select number side is swimming pool heat pump.

Dial switch 3 select ON side is non-online, select number side is online..

When select linkage, if linkage switch on , then pospone 16s , cycle water pump start, then 16s later , fan start, then 16s later, compressor start.

Dial switch 4 select ON side is circular mode, select number side is straight outlet + circular mode

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Ⅸ、 double

Air to water heat pump operation manual

Remarks: 1

：

Dial switch 1 select on side is 1phase supply, select unmber side is 3phase supply.

Dial switch 2 select on side is common air source heat pump, select number side is swimming pool heat pump.

Dial switch 3 select on side is hydronic heating mode, select number side is direct outlet+hydronic heating mode.

P12

Air to water heat pump operation manual wir ing

ON DIP

1 2 3 4

H P

P13

220V single

Air to water heat pump operation manual wir ing diagram

ON DIP

1 2 3 4

H P

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Air to water heat pump operation manual wir ing

ON

1 2 3 red electric expansion valve control panel

H P

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Air to water heat pump operation manual

Dear customers,

Thank you for using our products. We will supply you with complete after-services according to

“SUN&DAY” and “New three guarantees of quality”. Please read our instruction for more detail before using, so that you know how to install and use properly its excellent character of function. If you have any problems or suggestions, please contact the local agent or appointed Repair Company. They will give you good answer and better service.

The meanwhile, Please send the certification that you cut away from warranty card to our company after you install the heat pump in two weeks. We will record it validly, and then your heat pump will get repairs forever from the day when you brought it (Except the project machine which fix period is 1 year). During warranty period we can freely supply accessory. After that time you should pay for relevant material fee.

If there is problem, please write down the situation about problem & the No. of certification and inform our company, then we will send person to repair it. But the follow situations are beyond our free repair program.

1.

The forces of nature caused the problem. A>Flood, earth quake, typhoon, snowstorm, and thunder and lighting. B>Please clean up the inside, water around condenser when not using it When temperature is below zero 5C degree and there is no electricity. Make sure it is not damaged by ice.

2.

Incorrect action. For example: Didn’t clean evaporator, lacking of water, not enough voltage and so on.

3.

The problem caused by over use range. A>beyond the fixed temperature range, Using it when the voltage is too high or too low. B>the machine works continuously over 12 hours period leading to compressor damaged.

4.

The problem caused by change circuit board or change accessory without permission

5.

The problem caused by repairs, if done by someone not certified by our company.

6.

The problem cause by incorrect installation. A> the mistake of mislead pipe B>the mistake of mislead cable. C>Modified products without permission.

We reserve the right of the problem of the final release

Repair record

Date Reason Repair company Memory

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