Hisense AVWT-76FKFSHA Release Note

VRF AIR-CONDITIONER (HEAT RECOVERY) TCY12019005B
TCY12019005B
-Design-
-Installation-
Date: Dec, 2019
Qingdao Hisense Hitachi Air-conditioning Systems Co.,Ltd.
Add: 218, Qianwangang Road, Economic & Technological Development Zone, Qingdao, P. R. China
Http://www.hisense-vrf.com
E-mail: [email protected]
Specifications in this catalogue are subject to change without notice, in order that Hisense may bring the latest innovations to their customers.
TCY12019005B
Basic Models:
AVWT-76FKFSHA
AVWT-96FKFSHA
AVWT-114FKFSHA
AVWT-136FKFSHA
AVWT-154FKFSHA
AVWT-170FKFSHA
AVWT-190FKFSHA
AVWT-212FKFSHA
Combination Models:
AVWT-228~ 848FKFSHA
Technical
Handbook
VRF AIR-CONDITIONER
(HEAT RECOVERY)

This manual should be considered as a permanent part of the air conditioning equipment and should remain with the air
conditioning equipment.
This manual gives a common description and information for this heat pump air conditioner which you operate as well for other
models.
HISENSE pursues a policy of continuing improvement in design and performance of products. The right is therefore reserved to vary
specifications without notice.
HISENSE cannot anticipate every possible circumstance that might involve a potential hazard. This heat pump air conditioner is
designed for standard air conditioning only. Do not use this heat pump air conditioner for other purpose such as drying clothes,
refrigerating foods or for any other cooling or heating process. Do not install the unit in the following places. It may cause a fire,
deformation, corrosion or failure.
*Places where oil (including machinery oil) sprays
Places where inflammable gas may generate or flow.
*
*Places where a lot of sulfide gas drifts such as in hot spring.
Places where strong salty wind blows such as coast regions，or
places with an atmosphere of acidity or alkalinity.
●
●
●
●
●
●
●
Dear user:
Thank you for choosing and using our products. For your better understanding and use of this product, be sure to read and
comply with the following matters before use
IMPORTANT NOTICE
Signal words (danger, warning and caution) are used to identify levels of hazard seriousness. Definitions for identifying
hazard levels are provided below with their respective signal words：
●
●This heat pump air conditioner has been designed for the following temperatures. Operate the heat pump air conditioner within this
range.
Do not install the unit in the place where the breeze directly catches the animals and plants. It could adversely affect the animals and
plants.
Installation and service engineering must comply with local standards, laws and regulations.
As the“public inaccessible appliances”, the indoor units are required to be installed at a height of no lower than 2.5m.
The installation of the air conditioner can only be carried out by dealer or professional, and self installation by user may cause water
leakage, electric shock or fire.
If you have any questions, contact your dealer or designated service center of HISENSE.
To prevent the environment, please do not discard the product at will, and HISENSE can provide recycling services in accordance
with the relevant provisions of the country and provide replaceable parts in accordance with national standard requirements.
●
CAUTION
●
DANGER
WARNING
NOTE
: A hazardous situation which, if not avoided, should result in death or serious injury.
: A hazardous situation which, if not avoided, could result in death or serious injury.
: Used with the safety alert symbol, indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
:Useful information for operation and/or maintenance.
Do not install the unit in the place where silicon gas drifts. If the silicon gas attaches to the surface of heat exchanger, the fin surface
repels water. As a result, drain water splashes outside of the drain pan and splashed water runs inside of electrical box. In the end,
water leakage or electrical devices failure may occur.
●
I
*
(℃)
Indoor Unit-Cooling
Maximum Minimum
Indoor 32 DB/23 WB 21 DB/15 WB
Outdoor 52 DB * -10 DB
Indoor Unit-Heating
Maximum Minimum
Indoor 27 DB 15 DB
Outdoor 16.5 WB -25 WB**
Water Module Cooling
Maximum Minimum
Inlet water 25 10
Outdoor 48 DB 10 DB
Water Module Heating (Floor Heating)
Maximum Minimum
Inlet water 54 10
Outdoor 16.5 WB -25 WB**
Water Module Heating (DHW)
Maximum Minimum
Inlet water 54 10
Outdoor 43 WB -25 WB**
DB: Dry Bulb, WB: Wet Bulb
(*) 48℃ DB ~ 52℃ DB, Operation Control Range
(**) -20℃ WB ~ -25℃ WB, Operation Control Range

●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Do not use any sprays such as insecticide, lacquer, hair spray or other flammable gases within approximately one (1) meter from
the system.
If circuit breaker is often activated, stop the system and contact your or service contractor.
Check that the ground wire is securely connected. If the unit is not correctly grounded, it leads electric shock. Do not connect the
ground wiring to gas piping, water piping, lighting conductor or ground wiring for telephone.
Before performing any brazing work, check to ensure that there is no flammable material around. When filling refrigerant be sure to
wear leather gloves to prevent cold injuries.
Protect the wires, electrical parts, etc. from rats or other small animals. If not protected, rats may gnaw at unprotected parts and
which may lead to a fire.
Fix the cables securely. External forces on the terminals could lead to a fire.
Provide a sufficiently strong foundation. If not, the unit may fall down and it may lead to injuries.
Perform electrical work according to Installation Manual and all the relevant regulation and standards.
If the instructions are not followed, an electrical failure and fire may occur due to insufficient capacity and inadequate performance.
Use specified cables between units and choose the cables correctly. If not, an electrical failure or fire may occur.
Ensure that the outdoor unit is not covered with ice and snow before use.
●
DANGER
II
WARNING
● Do not step on or put any material on the product.
● Do not put any foreign material on the unit or inside the unit.
● Do not install the indoor unit, outdoor unit, remote control switch and cable within approximately 3 meters from strong
electromagnetic wave radiators such as medical equipment.
● Starting the unit after longtime idleness requires the compressor temperature to meet the starting requirements or reach a certain
heating time.
CAUTION
●
●
●
Do not perform installation work, refrigerant piping work, drain pump, drain piping and electrical wiring connection without referring to
our installation manual. If the instructions are not followed, it may result in a water leakage, electric shock or a fire. In case of fire, cut
off the power at the first time; do not touch the electrical parts by hand to avoid electric shock hazard.
Do not pour water into the indoor or outdoor unit. These products are equipped with electrical parts. If poured, it will cause a serious
electrical failure.
Do not open the service cover of the indoor or outdoor units without turning OFF the main power supply, otherwise it may cause a
serious safety accident.
Do not touch or adjust safety devices inside the indoor unit or outdoor units. If these devices are touched or readjusted, it may cause a
serious accident.
Refrigerant R410A for this unit is incombustible, non-toxic and odorless; however if the refrigerant is leaked and is contacted with fire,
toxic gas will generate. Also because the R410A is heavier than air, the floor surface will be filled with it, which could cause difficulty with
breathing due to insufficient air. Turn OFF the main switch, extinguish any naked flames and contact your service contractor, if refrigerant
leakage occurs. Do not charge oxygen, acetylene or other flammable and poisonous gases into the refrigeration cycle when
performing a leakage test or an air-tight test. These types of gases can cause an explosion. It is recommended that nitrogen be used for
these types of tests.
Refrigerant safety leakage standards for construction and operation systems are determined in accordance with local regulations or
standards
Use an ELB (Earth Leakage Breaker,with an actuation time of 0.1 second or less) at or above medium induction speed, otherwise
it may cause an electric shock or a fire.
For installation, firmly connect the refrigerant pipe before the compressor starts operating.
For maintenance, relocation and disposal, remove the refrigerant pipe after the compressor stops.
● Do not perform a short-circuit of the protection device such as a pressure switch when operating. It may cause a fire and explosion.
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.
The A-weighted emission sound pressure level at workstations does not exceed 70 dB(A).
●
●

CHECKING PRODUCT RECEIVED
●
●
Upon receiving this product, inspect it for any shipping damage.
Claims for damage in a written form, either apparent or concealed, should be filed immediately with the
shipping company.
Check the model number, electrical characteristics (power supply, voltage and frequency) and
accessories to determine if they are correct. The standard utilization of the unit shall be explained in
these instructions. Please contact your local agent, as the occasion arises.
HISENSE’s liability shall not cover defects arising from the alteration performed by a customer without
HISENSE’s consent in a written form.
III
The heating capacity of the heat pump unit is decreased according to the outdoor air temperature. Therefore, it is recommended
that auxiliary equipment be used in the field when the unit is installed in a low temperature region.
The repair and maintenance of this air conditioner can only be carried out by professional .
N OTE:
*
*
●
● It is recommended that the room will be ventilated every 3 to 4 hours.
● In some cases, the heat pump air conditioner may not be operated normally under the following cases.
●
In case that the power supplied by the power transformer is less than or equal to the electric power of the air conditioner.
In case that the large power-consuming equipment is too close to the power supply wiring for the air conditioner, so that large
surge voltage may be inducted in the power supply wiring of the air conditioner.
IMPORTANT NOTICE
Correct Disposal of this product
This marking indicates that this product should not be disposed with other
household wastes. To prevent possible harm to the environment or human
health from uncontrolled waste disposal, recycle it responsibly to promote the
sustainable reuse of material resources. To return your used device, please use
the return and collection systems or contact your retailer. They can take this
product for environmentally safe recycling.

-CONTENTS-
Design
1. Outdoor Units ............................................................................................................................................... 1
1.1 Modelsof Outdoor Unit......................................................................................................................... 1
1.2 ApplicationCase ................................................................................................................................... 6
1.3 Combination(High Efficiency Type)........................................................................................................8
1.4 Piping System...................................................................................................................................... 10
1.4.1 Connection of Refrigerant Pipesfor 3 PipesHeat RecoverySystem........................................... 10
1.4.2 Connection of Refrigerant Pipes for 2 Pipes Heat Pump System ................................................ 17
1.4.3 Pipe Connection Design Guidance for 3 Pipes Heat Recovery System .................................... 23
1.4.4 Pipe Connection Design Guidance for 2 Pipes Heat Pump System............................................ 26
1.4.6Piping Connection Kit Dimensions (optional)...............................................................................31
1.5 GeneralData.........................................................................................................................................37
1.6 Dimensional Data..................................................................................................................................48
1.7 Structure .............................................................................................................................................. 52
1.8 Sound Data.......................................................................................................................................... 56
1.9 Capacity Characteristic........................................................................................................................58
1.10Capacity Correction Based on Refrigerant Piping Length ................................................................. 510
1.11Correction Factor According to Defrosting Operation.........................................................................512
1.12Control System.................................................................................................................................... 513
1.12.1 Refrigeration Cycle.................................................................................................................... 513
1.12.2 Control Logic.............................................................................................................................516
1.12.3 Standard Operating Procedure Chart........................................................................................ 518
1.12.4 Component Data........................................................................................................................527
1.12.5 Safety and Control Device Setting..............................................................................................529
1.4.5 Calculation of AdditionalRefrigerant ............................................................................................29
Installation
1. Structure..................................................................................................................................................... 533
1.1 Outdoor Unit & Refrigeration Cycle......................................................................................................533
1.2 Necessary Toolsand Instrument Listfor Installation.............................................................................533
2. Transportation and Handling.......................................................................................................................535
2.1 Transportation.......................................................................................................................................535
2.2 Hanging Method................................................................................................................................... 536
3. Outdoor Unit Installation ............................................................................................................................ 537
3.1 Service Space...................................................................................................................................... 537
3.2 Factory-Supplied Accessories..............................................................................................................539
3.3 Installation………………………………………………………………………………………………........... 539
3.4 Foundation .......................................................................................................................................... 540
3.5 Drain WaterTreatment ........................................................................................................................ 541
1.9.1 Cooling Capacity at Different Temperatures..................................................................................58
1.9.2 Heating Capacity at Different Temperatures................................................................................ 284

-CONTENTS-
4. Refrigerant Piping Work............................................................................................................................. 543
4.1 Piping Materials ................................................................................................................................ 543
4.2 Flaringand Joint................................................................................................................................ 544
4.3 Caution about OutdoorUnit Installation.............................................................................................545
4.4 Piping Connection..............................................................................................................................547
4.4.1 Stop Valve............................................................................................................................... 548
4.4.2
Piping Connection...................................................................................................................549
5. Electrical Wiring......................................................................................................................................... 551
5.1 GeneralCheck ................................................................................................................................. 551
5.2 Electrical Data................................................................................................................................... 552
5.3 Electrical Wiring Connection............................................................................................................ 553
5.4 Dip Switch Setting of Outdoor Unit .................................................................................................. 556
6. Additional Refrigerant Charge................................................................................................................... 559
6.1 Air-TightTest..................................................................................................................................... 559
6.2 Vacuuming...................................................................................................................................... 560
6.3 ChargingWork .................................................................................................................................. 561
7. Test Run.................................................................................................................................................... 563
7.1 Before Test Run................................................................................................................................563
7.2 Test Run............................................................................................................................................ 564

OPTRQS

1. Outdoor Units
1.1 Models of Outdoor Unit
【Basic Unit】
Model 76~96 Model 154~170 Model 114~136 Model 190~212
【Combination of Basic Unit】※
Capacity
(kBtu/h(HP))
96(10HP) 114(12HP) 136(14HP)
Capacity
154(16HP)
Model
170(18HP) 190(20HP) 212(22HP)
Model
AVWT-76FKFSHA AVWT-96FKFSHA AVWT-114FKFSHA AVWT-136FKFSHA AVWT-154FKFSHA
AVWT-170FKFSHA AVWT-190FKFSHA AVWT-212FKFSHA
76(8HP)
(kBtu/h(HP))
Capacity
kBtu/h(HP) 250(26HP) 272(28HP) 290(30HP) 308(32HP)
Model AVWT-228FKFSHA
Capacity
kBtu/h(HP) 340(36HP) 360(38HP) 380(40HP) 402(42HP)
Model
Capacity
kBtu/h(HP) 444(46HP) 462(48HP) 478(50HP)
Model
Combination
Combination
Combination
AVWT-250FKFSHA AVWT-272FKFSHA AVWT-290FKFSHA
AVWT-324FKFSHA AVWT-340FKFSHA AVWT-360FKFSHA AVWT-380FKFSHA AVWT-402FKFSHA
AVWT-114FKFSHA
AVWT-114FKFSHA AVWT-114FKFSHA
AVWT-136FKFSHA
AVWT-136FKFSHA AVWT-136FKFSHA
AVWT-308FKFSHA
AVWT-154FKFSHA
AVWT-154FKFSHA
AVWT-170FKFSHA AVWT-170FKFSHA
AVWT-170FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-212FKFSHA
AVWT-212FKFSHA
AVWT-154FKFSHA AVWT-154FKFSHA
AVWT-154FKFSHA
AVWT-154FKFSHA
AVWT-190FKFSHA AVWT-212FKFSHA
AVWT-154FKFSHA
-
AVWT-154FKFSHA AVWT-170FKFSHA
494(52HP)
Capacity
kBtu/h(HP) 530(56HP) 550(58HP) 570(60HP)
Model
Combination
AVWT-170FKFSHA
AVWT-170FKFSHA
AVWT-170FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-170FKFSHA
AVWT-190FKFSHA
592(62HP)
AVWT-170FKFSHA
AVWT-494FKFSHAAVWT-424FKFSHA AVWT-444FKFSHA AVWT-462FKFSHA AVWT-478FKFSHA
AVWT-170FKFSHA
AVWT-510FKFSHA AVWT-530FKFSHA AVWT-550FKFSHA AVWT-570FKFSHA AVWT-592FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-170FKFSHA AVWT-190FKFSHA
228(24HP)
324(34HP)
424(44HP)
AVWT-170FKFSHA
510(54HP)
AVWT-136FKFSHA AVWT-154FKFSHA
AVWT-154FKFSHA AVWT-170FKFSHA AVWT-190FKFSHA
AVWT-136FKFSHA AVWT-154FKFSHA AVWT-154FKFSHA
AVWT-212FKFSHAAVWT-190FKFSHA AVWT-190FKFSHA
1

※Combine the specified base units as showed in the table above, and do not use any combination of modules other than
those in the above table.
700(74HP) 720(76HP) 740(78HP) 760(80HP)
Combination
AVWT-190FKFSHA AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-170FKFSHA AVWT-170FKFSHA AVWT-170FKFSHA
782(82HP)
Capacity 636(66HP) 648(68HP) 664(70HP)
Model
Combination
AVWT-212FKFSHA AVWT-212FKFSHA
AVWT-212FKFSHA
AVWT-170FKFSHA
AVWT-170FKFSHA
AVWT-170FKFSHA
AVWT-170FKFSHA
680(72HP)
AVWT-614FKFSHA AVWT-636FKFSHA AVWT-648FKFSHA AVWT-664FKFSHA AVWT-680FKFSHA
AVWT-170FKFSHA
AVWT-170FKFSHA
AVWT-170FKFSHAAVWT-190FKFSHA AVWT-212FKFSHA AVWT-170FKFSHAAVWT-154FKFSHA
AVWT-170FKFSHA AVWT-170FKFSHA AVWT-190FKFSHA
AVWT-700FKFSHA AVWT-720FKFSHA AVWT-740FKFSHA AVWT-760FKFSHA AVWT-782FKFSHA
AVWT-212FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
614(64HP)
AVWT-212FKFSHA
Capacity
AVWT-154FKFSHA AVWT-170FKFSHAAVWT-154FKFSHA
AVWT-170FKFSHA
Model
Capacity 826(86HP) 848(88HP)
Combination
AVWT-804FKFSHA AVWT-826FKFSHA
AVWT-212FKFSHA
AVWT-212FKFSHA
AVWT-212FKFSHA
AVWT-190FKFSHA
AVWT-212FKFSHA
AVWT-212FKFSHA
AVWT-190FKFSHA
AVWT-190FKFSHA
AVWT-848FKFSHA
AVWT-212FKFSHA
AVWT-212FKFSHA
AVWT-212FKFSHA
AVWT-212FKFSHA
804(84HP)
Model
kBtu/h(HP)
kBtu/h(HP)
kBtu/h(HP)
2

Model 360 Model 380~424
Model 228~272 Model 290 Model 308~340
3

Model 462~510
Model 530
Model 444
Model 550
Model 570~636
4

Model 648~680
Model 700
Model 720
Model 740
5

Model 760~848
1.2 Application Case
Application Case 1: Three Pipes Heat Recovery System with Switch Box
Capacity Ratio
50%~150%
Total 50%~150%
Without SW Box
(Cooling Only) 0%~50%
0%~60%
Application Case 2: Three Pipes Heat Recovery System without Switch Box
100%~200%
50%~100%
50%~100%
80%~130%
Water Module
Total Capacity Ratio
Indoor Unit
Total Capacity Ratio
Capacity Ratio of Indoor Unit to
Water Module
Indoor Unit (Cooling Only)
Water Module (Heating Only)
IU
Simultaneous
Cooling/Heating
WM
Simultaneous
WM
Heating Only
IU
Cooling
Only
AHU
IU
Cooling
Only
NOTE：
1. The function setting of "H4" must be set to 0 on
the outdoor unit PCB (default setting).
2. The function setting of "n3" must be set to correct
value equal to the quantity of water module
connected on the outdoor unit PCB.
3. WM with Simultaneous Cooling/heating must
occupy one branch of SW Box exclusively.
NOTE：
1. The function setting of "H4" must be set to 0 on
the outdoor unit PCB (default setting).
2. The function setting of "n3" must be set to correct
value equal to the quantity of water module
connected on the outdoor unit PCB.
Cooling
Only Cooling
Only
IU
Cooling
Only
Cooling
Only WM Heating Only
Capacity Ratio
Cooling/Heating
6
High /Low pressure gas pipe
Low pressure gas pipe
Liquid pipe
High /Low pressure gas pipe
Low pressure gas pipe
Liquid pipe

Indoor Unit Type Nominal Power(kBtu/h)
Ceiling Ducted Type (Low Static Pressure)
Low-Height Ceiling Ducted Type
4-Way Cassette Type
Wall-Mounted Type
Floor-Concealed Type
Ceiling and Floor Type
Slim Ceiling Ducted Type
Compact 4-Way Cassette Type
Ceiling Ducted Type (High Static Pressure)
1-Way Cassette Type
2-Way Cassette Type
Low-Height Ceiling Ducted Type (DC)
07 09 12 14 17 18 22 24 27 30 38 48 54 76 96
19
15
05
Console Type
50%~150%
50%~150%
0%~60%
Water Module
Total Capacity Ratio
Indoor Unit
Application Case 3: Two Pipes Heat Pump System
NOTE：
1. The function setting of "H4" must be set to 2 on
the outdoor unit PCB .
2. The function setting of "n3" must be set to correct
value equal to the quantity of water module
connected on the outdoor unit PCB.
IU changeover
Cooling/Heating
WM changeover
Cooling/Heating
Capacity Ratio
For operation temperature range, please refer to page i.
The following indoor units and water modules can be combined with the outdoor unit.
Table 1.1 Indoor Unit Type List
7
High /Low pressure gas pipe
Liquid pipe

1.3 Combination (High Efficiency Type)
Utilizing an inverter control, a wide range of operation capacity control is also available. A maximum total combination
horsepower of 150% and a minimum total combination horsepower of 50% can be chosen by combination of the indoor
units when compared with the nominal outdoor unit capacity. Therefore, the new system can meet individual air
conditioning requirements in most office buildings.
Table 1.2 Water Module Type List
Water Module Type Nominal Power(100W)
Wall-Mounted Type
16080
Available
The number of connectable indoor units with the outdoor unit is as follows. Comply with the condition as follows when installing the unit.
A maximum total capacity of 150% and a minimum total capacity of 50% can be obtained by combination of the indoor units when
compared with the nominal outdoor unit capacity.
○
●
●
8
Outdoor
Unit
Model
(KBtu/h)
Min. Single-
Individual
Operation
(KBtu/h)
Max.
Number of
Connectable
I.U.
Recommended
Number of
Connectable I.U.
Max.
Number of
Connectable
Water Modules for
Application Case
1&3 (Chapter 1.2)
Max.
Number of
Connectable
Water Modules for
Application Case 2
(Chapter 1.2)
76 (8HP) 13 8 1 3
96 (10HP) 16 10 2 3
114 (12HP) 19 10 2 4
136 (14HP) 23 16 3 5
154 (16HP) 26 16 3 6
170 (18HP) 29 16 4 7
190 (20HP) 33 18 4 7
212 (22HP) 36 20 5 8
228 (24HP) 40 26 5 9
250 (26HP) 43 26 6 10
272 (28HP) 47 32 6 11
290 (30HP) 50 32 7 11
308 (32HP) 53 32 7 12
324 (34HP) 56 32 7 12
340 (36HP) 59 32 8 12
360 (38HP) 64 38 8 12
380 (40HP) 64 38 9 12
402 (42HP) 64 38 9 12
424 (44HP) 64 38 10 12
444 (46HP) 64 38 10 12
462 (48HP) 64 38 11 12
478 (50HP) 64 38 11 12
494 (52HP) 64 38 12 12
510 (54HP) 64 38 12 12
530 (56HP) 64 38 12 12
550 (58HP) 64 38 12 12
570 (60HP) 64 38 12 12
05

NOTE:
1. In a system where all indoor units operate at the same time and the same mode, total capacity of these indoor units should
not be larger than combined capacity of the outdoor units, or otherwise overload may occur under severe working condition or
within narrow operating range.
2. If the system is used in the cold area (ambient temperature becomes under -10°C) or under the high heating load
conditions, the total indoor unit capacity should be less than 100% against the outdoor unit and total piping length is less than
300m.
3. 05/07 type indoor units are set with higher air flow. Determine the working environment and installation location carefully. Do
not install these units in the place where the cold draft may occur during heating operation. If the unit is installed in such
places, the number of connectable I.U. should be less than the recommended number on the table above.
4. When the connected indoor units contain Cassette Type or Wall-Mounted Type,and the nominal capacity is less than or
equal to 12kBth/h, the total indoor unit capacity should be equal to or less than 130% against the outdoor unit.
5. When the outdoor air temperature is more than 43℃ during the cooling operation, the total indoor unit capacity should be
equal to or less than 100% against the outdoor unit.
6. If the operational capacity of indoor units at the same mode is more than 130% against the outdoor unit, the indoor units
should be set to low airflow operation.
9
Outdoor
Unit
Model
(KBtu/h)
Min. Single-
Individual
Operation
(KBtu/h)
Max.
Number of
Connectable
I.U.
Recommended
Number of
Connectable I.U.
Max.
Number of
Connectable
Water Modules for
Application Case
1&3 (Chapter 1.2)
Max.
Number of
Connectable
Water Modules for
Application Case 2
(Chapter 1.2)
592 (62HP) 64 38 12 12
614 (64HP) 64 38 12 12
636 (66HP) 64 38 12 12
648 (68HP) 64 38 12 12
664 (70HP) 64 38 12 12
680 (72HP) 64 38 12 12
700 (74HP) 64 38 12 12
720 (76HP) 64 38 12 12
740 (78HP) 64 38 12 12
760 (80HP) 64 38 12 12
782 (82HP) 64 38 12 12
804 (84HP) 64 38 12 12
826 (86HP) 64 38 12 12
848 (88HP) 64 38 12 12
05

76 (8HP) 96 (10HP) 114 (12HP) 136 (14HP) 154 (16HP)
Low Pressure Gas 19.05 22.2 25.4 25.4 28.6
High/Low
Pressure Gas 15.88 19.05 22.2 22.2 22.2
Liquid 9.53 9.53 12.7 12.7 12.7
170 (18HP) 190 (20HP) 212 (22HP)
Low Pressure Gas 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 25.4
Liquid 15.88 15.88 15.88
Model (kBtu/h)
Piping
Size
Φ (mm) a
Model (kBtu/h)
Piping
Size
Φ (mm) a
1.4 Piping System
1.4.1 Connection of Refrigerant Pipes for 3 Pipes Heat Recovery System
10

228 (24HP) 250 (26HP) 272 (28HP) 290 (30HP) 308 (32HP)
114 (12HP) 136 (14HP) 136 (14HP) 154 (16HP) 154 (16HP)
114 (12HP) 114 (12HP) 136 (14HP) 136 (14HP) 154 (16HP)
HFQ-M202F
Low Pressure Gas 28.6 31.75 31.75 31.75 31.75
High/Low
Pressure Gas 25.4 25.4 28.6 28.6 28.6
Liquid 15.88 19.05 19.05 19.05 19.05
Low Pressure Gas 25.4 25.4 25.4 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 22.2
Liquid 12.7 12.7 12.7 12.7 12.7
Low Pressure Gas 25.4 25.4 25.4 25.4 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 22.2
Liquid 12.7 12.7 12.7 12.7 12.7
324 (34HP) 340 (36HP) 360 (38HP) 380 (40HP) 402 (42HP)
170 (18HP) 170 (18HP) 190 (20HP) 190 (20HP) 212 (22HP)
154 (16HP) 170 (18HP) 170 (18HP) 190 (20HP) 190 (20HP)
Low Pressure Gas 31.75 38.1 38.1 38.1 38.1
High/Low
Pressure Gas 28.6 28.6 31.75 31.75 31.75
Liquid 19.05 19.05 19.05 19.05 19.05
Low Pressure Gas 28.6 28.6 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 25.4
Liquid 15.88 15.88 15.88 15.88 15.88
Low Pressure Gas 28.6 28.6 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 22.2
Liquid 12.7 15.88 15.88 15.88 15.88
424 (44HP)
212 (22HP)
212 (22HP)
HFQ-M302F
Low Pressure Gas 38.1
High/Low
Pressure Gas 31.75
Liquid 19.05
Low Pressure Gas 28.6
High/Low
Pressure Gas 25.4
Liquid 15.88
Low Pressure Gas 28.6
High/Low
Pressure Gas 25.4
Liquid 15.88
HFQ-M212F
HFQ-M212F HFQ-M302F
Manifold Pipe
Piping
Size
Φ (mm)
a
b
c
Model (kBtu/h)
Combination of
Base Unit
Outdoor Unit A
Outdoor Unit B
Piping
Size
Φ (mm)
a
b
c
Model (kBtu/h)
Combination of
Base Unit
Outdoor Unit A
Outdoor Unit B
Model (kBtu/h)
Combination of
Base Unit
Outdoor Unit A
Outdoor Unit B
Manifold Pipe
Manifold Pipe
Piping
Size
Φ (mm)
a
b
c
11

444 (46HP) 462 (48HP) 478 (50HP) 494 (52HP) 510 (54HP)
154 (16HP) 154 (16HP) 170 (18HP) 170 (18HP) 170 (18HP)
154 (16HP) 154 (16HP) 154 (16HP) 170 (18HP) 170 (18HP)
136 (14HP) 154 (16HP) 154 (16HP) 154 (16HP) 170 (18HP)
Low Pressure Gas 38.1 38.1 38.1 38.1 38.1
High/Low
Pressure Gas 31.75 31.75 31.75 31.75 31.75
Liquid 19.05 19.05 19.05 19.05 19.05
Low Pressure Gas 28.6 28.6 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 22.2
Liquid 12.7 12.7 15.88 15.88 15.88
Low Pressure Gas 31.75 31.75 31.75 31.75 38.1
High/Low
Pressure Gas 28.6 28.6 28.6 28.6 28.6
Liquid 19.05 19.05 19.05 19.05 19.05
Low Pressure Gas 28.6 28.6 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 22.2
Liquid 12.7 12.7 12.7 15.88 15.88
Low Pressure Gas 25.4 28.6 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 22.2
Liquid 12.7 12.7 12.7 12.7 15.88
Model (kBtu/h)
Combination of
Base Unit
Outdoor Unit A
Outdoor Unit B
Outdoor Unit C
Manifold Pipe1 HFQ-M302F
Manifold Pipe2
Piping
Size
Φ (mm)
a
b
c
d
e
HFQ-M212F
12

530 (56HP) 550 (58HP) 570 (60HP) 592 (62HP) 614 (64HP)
190 (20HP) 190 (20HP) 190 (20HP) 212 (22HP) 212 (22HP)
170 (18HP) 190 (20HP) 190 (20HP) 190 (20HP) 212 (22HP)
170 (18HP) 170 (18HP) 190 (20HP) 190 (20HP) 190 (20HP)
HFQ-M212F
Low Pressure Gas 41.3 44.5 44.5 44.5 44.5
High/Low
Pressure Gas 38.1 41.3 41.3 41.3 41.3
Liquid 22.2 22.2 22.2 22.2 22.2
Low Pressure Gas 28.6 28.6 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 25.4 25.4
Liquid 15.88 15.88 15.88 15.88 15.88
Low Pressure Gas 38.1 38.1 38.1 38.1 38.1
High/Low
Pressure Gas 28.6 31.75 31.75 31.75 31.75
Liquid 19.05 19.05 19.05 19.05 19.05
Low Pressure Gas 28.6 28.6 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 25.4
Liquid 15.88 15.88 15.88 15.88 15.88
Low Pressure Gas 28.6 28.6 28.6 28.6 28.6
High/Low
Pressure Gas 22.2 22.2 22.2 22.2 22.2
Liquid 15.88 15.88 15.88 15.88 15.88
636 (66HP)
212 (22HP)
212 (22HP)
212 (22HP)
HFQ-M462XF
HFQ-M302F
Low Pressure Gas 44.5
High/Low
Pressure Gas 41.3
Liquid 22.2
Low Pressure Gas 28.6
High/Low
Pressure Gas 25.4
Liquid 15.88
Low Pressure Gas 38.1
High/Low
Pressure Gas 31.75
Liquid 19.05
Low Pressure Gas 28.6
High/Low
Pressure Gas 25.4
Liquid 15.88
Low Pressure Gas 28.6
High/Low
Pressure Gas 25.4
Liquid 15.88
Model (kBtu/h)
Combination of
Base Unit
Outdoor Unit A
Outdoor Unit B
Outdoor Unit C
Manifold Pipe1 HFQ-M462XF
Manifold Pipe2
Piping
Size
Φ (mm)
a
b
c
d
e
HFQ-M302F
Manifold Pipe2
Piping
Size
Φ (mm)
a
b
c
d
e
Model (kBtu/h)
Combination of
Base Unit
Outdoor Unit A
Outdoor Unit B
Outdoor Unit C
Manifold Pipe1
13