Page 1
Service Manual
WMZ Series
REFRIGERANT
R407C
R22
COOLING ONLY
HEAT PUMP
SEPTEMBER 2005
Indoor Units Outdoor Units
WMZ 7 GCZ 7
WMZ 9 GCZ 9
WMZ 12 GCZ 12
WMZ 17 GCZ 17
WMZ 22 GCZ 24
Page 2
A
LIST OF EFFECTIVE PAGES
Revision Y05-01 Service Manual - WMZ
LIST OF EFFECTIVE PAGES
Note: Changes in the pages are indicated by a “Revision#” in the footer of each effected page
(when none indicates no changes in the relevant page). All pages in the following list represent
effected/ non effected pages divided by chapters.
Dates of issue for original and changed pages are:
Original ....... 0 ........ 15 December 2004
Total number of pages in this publication is 151 consisting of the following:
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Title ....................... 0
A ........................... 0
i ............................. 0
1-1 - 1-8 ................ 0
2-1 - 2-10 .............. 0
3-1 - 3-2 ................ 0
4-1 - 4-3 ................ 0
5-1 - 5-98 .............. 1
6-1 - 6-2 ................ 0
7-1 - 7-2 ................ 0
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9-1 - 9-2 ................ 0
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11-1-11-2 ............... 0
12-1-12-32 ............ 0
13-1-13-2 .............. 0
14-1 – 14-41 ......... 0
15-1 – 15-5 ........... 0
Appendix -A ...........0
• Zero in this column indicates an original page.
*Due to constant improvements please note that the data on this service manual can be modified with out notice.
**Photos are not contractual.
Page 3
i
TABLE OF CONTENTS
Revision Y05-01Service Manual - WMZ
Table of Contents
1. INTRODUCTION ...................................................................................................1-1
2. PRODUCT DATA SHEET ......................................................................................2-1
3. RATING CONDITIONS ..........................................................................................3-1
4. OUTLINE DIMENSIONS .......................................................................................4-1
5. PERFORMANCE DATA & PRESSURE CURVES ................................................5-1
6. SOUND LEVEL CHARACTERISTICS ..................................................................6-1
7. ELECTRICAL DATA ..............................................................................................7-1
8. WIRING DIAGRAMS .............................................................................................8-1
9. ELECTRICAL CONNECTIONS .............................................................................9-1
10. REFRIGERATION DIAGRAMS .............................................................................10-1
11. TUBING CONNECTIONS ......................................................................................11-1
12. CONTROL SYSTEM .............................................................................................12-1
13. TROUBLESHOOTING ..........................................................................................13-1
14. EXPLODED VIEWS AND SPARE PARTS LISTS .................................................14-1
15. OPTIONAL ACCESSORIES .................................................................................15-1
16. APPENDIX A
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1-1
INTRODUCTION
Revision Y05-01Service Manual - WMZ
1. INTRODUCTION
1.1 General
The new WMZ split wall mounted range comprise the ST (cooling only)
and RC (heat pump) models, as follows:
• Cooling Only WMZ 7ST, WMZ 9ST, WMZ 12ST, WMZ 17ST,
WMZ 22ST
• Heat Pump WMZ 7RC, WMZ 9RC, WMZ 12RC, WMZ 17RC,
WMZ 22RC
The indoor WMZ units are available as LED display types only, featuring esthetic
design, compact dimensions, and low noise operation.
1.2 Main Features
• R22 and R407C models
• Microprocessor control.
• Infrared remote control with liquid crystal display.
• Cross flow fan, allowing low noise level operation.
• Indoor coil with treated aluminum fins and coating for improved efficiency.
• Easy access to the interconnecting tubing and wiring connections, so that
removing the front grill or casing is not necessary.
• Refrigerant pipes can be connected to the indoor unit from 6 different optional
directions.
• Automatic treated air sweep.
• Low indoor and outdoor noise levels.
• Easy installation and service.
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1-2
INTRODUCTION
Revision Y05-01 Service Manual - WMZ
1.3 Indoor Unit
The indoor unit is wall mounted, and can be easily fitted to many types of residential
and commercials applications.
It includes:
• Casing with air inlet and outlet grills.
• tangential fan.
• Coil with treated aluminum fins.
• Motorized flaps
• Multi-speed motor with internal protection
• Advanced electronic control box assembly
• Interconnecting wiring terminal block
• Mounting plate
1.4 Filtration
The WMZ series presents several types of air filters:
• Easily accessible, and re-usable pre-filters (mesh)
• Pre-charged electrostatic filter (disposable) – optional
• Active carbon filter (disposable) – optional
1.5 Control
The microprocessor indoor controller, and an infrared remote control, supplied as
standard, provides complete operating function and programming. For further details
please refer to the Operation Manual, Appendix A.
1.6 Outdoor Unit
The WMZ outdoor units can be installed as floor or wall mounted units by using a
wall supporting bracket. The metal sheets are protected by anti- corrosion paint work
allowing long life resistance. All outdoor units are pre-charged. For further information
please refer to the Product Data Sheet, Chapter 2.
It includes :
• A Rotary Compressor mounted in a soundproofed compartment :
• Axial fan.
• Outdoor coil with hydrophilic louver fins for RC units.
• Outlet air fan grill.
• Service valves” flare” type connection.
• Interconnecting wiring terminal block.
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1-3
INTRODUCTION
Revision Y05-01Service Manual - WMZ
1.7 Tubing Connections
Flare type interconnecting tubing to be produced on site.
For further details please refer to the Installation Manual, Appendix A.
1.8 Accessories
ASK (All Season Kit):
For low ambient working conditions in cooling, an ASK can be installed inside the
outdoor unit. This kit allows cooling operation down to outdoor temp of -10 ºC by
gradually controlling the outdoor fan speed motor.
RCW Wall Mounted Remote Control
The RCW remote control is mounted on the wall, and controls the unit either as an
infrared remote control or as a wired controller. The wired controller can control up to
10 Indoor units with the same program settings and adjustments.
For further details please refer to Optional Accessories, Chapter 15.
1.9 Inbox Documentation
Each unit is supplied with its own installation and operation manuals.
1.10 Matching Table
1.10.1 R407C / R22
OUTDOOR UNITS
INDOOR UNITS
MODEL REF’ WMZ 7 WMZ 9 WMZ 12 WMZ 17 WMZ 22
GCZ 7 ST/ RC R407C/R22
√
GCZ 9 ST/ RC R407C/R22
√
GCZ 12 ST/ RC R407C/R22
√
GCZ 17 ST / RC R407C/R22
√
GCZ 22 ST / RC R407C/R22
√
Page 7
2-1
PRODUCT DATA SHEET
Revision Y05-01Service Manual - WMZ
1. PRODUCT DATA SHEET
1.1 R407C
Model Indoor Unit WMZ-7
Model Outdoor Unit GCZ-7
Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating
Capacity
(1)
Btu/hr 6860 6860 7640
kW 2.01 2.01 2.24
Power input
(1)
kW 0.77 0.77 0.72
EER (Cooling) or COP(Heating)
(1)
W/W 2.61 2.61 3.11
Energy efficiency class
D
DD
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 3.4 3.4 3.2
Starting current A 22
Circuit breaker rating A 10
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 970/750
Air flow
(2)
H/M/L m3/hr 360/275
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 47/41
Sound pressure level
(4)
H/M/L dB(A) 34/28
Moisture removal l/hr 0.8
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 815*280*170
Weight kg 8
Package dimensions WxHxD mm 890*240*340
Packaged weight kg 11.5
Units per pallet units 32
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, TOSHIBA PG135X1C-4DT2
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 555
Air flow H/L m3/hr 1310
Sound power level H/L dB(A) 63
Sound pressure level
(4)
H/L dB(A) 53
Dimensions WxHxD mm 760*545*245
Weight kg 30 31
Package dimensions WxHxD mm 880*610*310
Packaged weight kg 32.5
Units per pallet Units 12
Stacking height units 3 levels
Refrigerant type R407C
Refrigerant chargless distance kg/m 0.59kg/4m
Additional charge per 1 meter g/m 4m<Lin<8m:+5g/m Lin>8m:+9g/m
Connections between
units
Liquid line In.(mm) Ф 1/4”(6.35)
Suction line In.(mm) Ф 3/8”(9.53)
Max.tubing length m. Max.10
Max.height
difference
m. Max.7
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 8
2-2
PRODUCT DATA SHEET
Revision Y05-01 Service Manual - WMZ
Model Indoor Unit WMZ-9
Model Outdoor Unit GCZ-9
Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating
Capacity
(1)
Btu/hr 8700 8700 9380
kW 2.55 2.55 2.75
Power input
(1)
kW 1.05 1.05 1.02
EER (Cooling) or COP(Heating)
(1)
W/W 2.43 2.43 2.7
Energy efficiency class
E
EE
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 4.6 4.6 4.6
Starting current A 26
Circuit breaker rating A 10
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 1070/860
Air flow
(2)
H/M/L m3/hr 390/310
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 50/45
Sound pressure level
(4)
H/M/L dB(A) 38/33
Moisture removal l/hr 1
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 815*280*170
Weight kg 8
Package dimensions WxHxD mm 890*240*340
Packaged weight kg 11.5
Units per pallet units 32
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, TOSHIBA PG170X1C-4FS2
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 655
Air flow H/L m3/hr 1370
Sound power level H/L dB(A) 66
Sound pressure level
(4)
H/L dB(A) 56
Dimensions WxHxD mm 760*545*245
Weight kg 31 32
Package dimensions WxHxD mm 880*610*310
Packaged weight kg 33.5
Units per pallet Units 12
Stacking height units 3 levels
Refrigerant type R407C
Refrigerant chargless distance kg/m 0.83kg/4m
Additional charge per 1 meter g/m 4m<Lin<8m:+5g/m Lin>8m:+9g/m
Connections between
units
Liquid line In.(mm) Ф 1/4”(6.35)
Suction line In.(mm) Ф 3/8”(9.53)
Max.tubing length m. Max.10
Max.height
difference
m. Max.7
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
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2-3
PRODUCT DATA SHEET
Revision Y05-01Service Manual - WMZ
Model Indoor Unit WMZ-12
Model Outdoor Unit GCZ-12
Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating
Capacity
(1)
Btu/hr 10610 10610 11430
kW 3.11 3.11 3.35
Power input
(1)
kW 1.25 1.25 1.28
EER (Cooling) or COP(Heating)
(1)
W/W 2.49 2.49 2.62
Energy efficiency class
E
EE
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 5.5 5.5 5.9
Starting current A 33
Circuit breaker rating A 15
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 1270/1000
Air flow
(2)
H/M/L m3/hr 450/385
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 53/45
Sound pressure level
(4)
H/M/L dB(A) 41/33
Moisture removal l/hr 1.5
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 815*280*170
Weight kg 9
Package dimensions WxHxD mm 890*240*340
Packaged weight kg 12
Units per pallet units 32
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, TOSHIBA PG225X2C-4FS
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 735
Air flow H/L m3/hr 1550
Sound power level H/L dB(A) 68
Sound pressure level
(4)
H/L dB(A) 58
Dimensions WxHxD mm 760*545*245
Weight kg 36 37
Package dimensions WxHxD mm 880*610*310
Packaged weight kg 39.5
Units per pallet Units 12
Stacking height units 3 levels
Refrigerant type R407C
Refrigerant chargless distance kg/m 1.01kg/4m
Additional charge per 1 meter g/m 4m<Lin<8m:+5g/m Lin>8m:+9g/m
Connections between
units
Liquid line In.(mm) Ф 1/4”(6.35)
Suction line In.(mm) Ф 1/2”(12.7)
Max.tubing length m. Max.15
Max.height
difference
m. Max.7
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 10
2-4
PRODUCT DATA SHEET
Revision Y05-01 Service Manual - WMZ
Model Indoor Unit WMZ-17
Model Outdoor Unit GCZ-17
Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating
Capacity
(1)
Btu/hr 17740 18080 18770
kW 5.2 5.3 5.5
Power input
(1)
kW 1.99 2.03 1.95
EER (Cooling) or COP(Heating)
(1)
W/W 2.61 2.61 2.82
Energy efficiency class D D D
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 9.5 9.8 9.4
Starting current A 45
Circuit breaker rating A 15
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 1100/850
Air flow
(2)
H/M/L m3/hr 830/580
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 60/54
Sound pressure level
(4)
H/M/L dB(A) 46/40
Moisture removal l/hr 2.2
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 1115*330*200
Weight kg 13
Package dimensions WxHxD mm 1200*420*300
Packaged weight kg 17
Units per pallet units 16
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, TOSHIBA PG330X2CS-4KT3
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 920
Air flow H/L m3/hr 2160
Sound power level H/L dB(A) 66
Sound pressure level
(4)
H/L dB(A) 55
Dimensions WxHxD mm 795*610*290
Weight kg 42 43
Package dimensions WxHxD mm 945*655*395
Packaged weight kg 45 51
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R407C
Refrigerant chargless distance kg/m 1.3kg/7.5m 1.23kg/7.5m
Additional charge per 1 meter g/m 4m<Lin<8m:+5g/m Lin>8m:+15g/m
Connections between
units
Liquid line In.(mm) Ф 1/4”(6.35)
Suction line In.(mm) Ф 1/2”(12.7)
Max.tubing length m. Max.15
Max.height
difference
m. Max.7
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 11
2-5
PRODUCT DATA SHEET
Revision Y05-01Service Manual - WMZ
Model Indoor Unit WMZ-22
Model Outdoor Unit GCZ-22
Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating
Capacity
(1)
Btu/hr 23030 22310 23820
kW 6.75 6.54 6.98
Power input
(1)
kW 2.52 2.6 2.66
EER (Cooling) or COP(Heating)
(1)
W/W 2.68 2.52 2.62
Energy efficiency class
D
EE
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 11.7 12.0 12.2
Starting current A 55
Circuit breaker rating A 20
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 1300/950
Air flow
(2)
H/M/L m3/hr 990/690
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 64/58
Sound pressure level
(4)
H/M/L dB(A) 50/44
Moisture removal l/hr 2.6
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 1115*330*200
Weight kg 14
Package dimensions WxHxD mm 1200*420*300
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, TOSHIBA PG420X3CS-4MT1
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 850
Air flow H/L m3/hr 2480
Sound power level H/L dB(A) 71
Sound pressure level
(4)
H/L dB(A) 61
Dimensions WxHxD mm 846*690*302
Weight kg 62
Package dimensions WxHxD mm 990*720*430
Packaged weight kg 62 62
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R407C
Refrigerant chargless distance kg/m 1.91kg/7.5m 2.09kg/7.5m
Additional charge per 1 meter g/m Lin>7.5m:+40g/m
Connections between
units
Liquid line In.(mm) Ф 3/8”(9.53)
Suction line In.(mm) Ф 5/8”(15.88)
Max.tubing length m. Max.15
Max.height
difference
m. Max.7
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 12
2-6
PRODUCT DATA SHEET
Revision Y05-01 Service Manual - WMZ
1.2 R22
Model Indoor Unit WMZ-7
Model Outdoor Unit GCZ-7
Installation Method of Pipe Flared
Characteristics Units cooling only Cooling Heating
Capacity
(1)
Btu/hr 7370 7370 7680
kW 2.16 2.16 2.25
Power input
(1)
kW 0.78 0.78 0.70
EER (Cooling) or COP(Heating)
(1)
W/W 2.77 2.77 3.21
Energy efficiency class
D
DC
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 3.5 3.5 3.2
Starting current A 16
Circuit breaker rating A 10
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 970/750
Air flow
(2)
H/M/L m3/hr 360/275
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 47/41
Sound pressure level
(4)
H/M/L dB(A) 34/28
Moisture removal l/hr 0.7
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 813X170X280
Weight kg 8
Package dimensions WxHxD mm 890X340X240
Packaged weight kg 11.5
Units per pallet units 32
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, HITACHI SD134CV-H6AUA
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 555
Air flow H/L m3/hr 1400
Sound power level H/L dB(A) 61
Sound pressure level
(4)
H/L dB(A) 51
Dimensions WxHxD mm 770X245X545
Weight kg 30
Package dimensions WxHxD mm 880X310X610
Packaged weight kg 32.5
Units per pallet Units 12
Stacking height units 3 levels
Refrigerant type R22
Refrigerant chargless distance kg/m 0.66kg/4m
Additional charge per 1 meter g/m 4m<Lin<8m:+5g/m Lin>8m:+9g/m
Connections between
units
Liquid line In.(mm) 1/4”(6.35)
Suction line In.(mm) 3/8”(9.53)
Max.tubing length m. Max.10
Max.height
difference
m. Max.6
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 13
2-7
PRODUCT DATA SHEET
Revision Y05-01Service Manual - WMZ
Model Indoor Unit WMZ-9
Model Outdoor Unit GCZ-9
Installation Method of Pipe Flared
Characteristics Units cooling only Cooling Heating
Capacity
(1)
Btu/hr 8700 8700 9380
kW 2.55 2.55 2.75
Power input
(1)
kW 1 1 1.00
EER (Cooling) or COP(Heating)
(1)
W/W 2.55 2.55 2.75
Energy efficiency class
E
EE
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 4.5 4.5 4.5
Starting current A 26
Circuit breaker rating A 10
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 1070/860
Air flow
(2)
H/M/L m3/hr 390/310
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 48/41
Sound pressure level
(4)
H/M/L dB(A) 36/29
Moisture removal l/hr 1.3
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 813X170X275
Weight kg 8
Package dimensions WxHxD mm 890X340X240
Packaged weight kg 11.5
Units per pallet units 32
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, TOSHIBA PH170X1C-4FS2
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 655
Air flow H/L m3/hr 1370
Sound power level H/L dB(A) 64
Sound pressure level
(4)
H/L dB(A) 54
Dimensions WxHxD mm 770X245X545
Weight kg 31
Package dimensions WxHxD mm 880X310X610
Packaged weight kg 33.5
Units per pallet Units 12
Stacking height units 3 levels
Refrigerant type R22
Refrigerant chargless distance kg/m 0.73kg/4m
Additional charge per 1 meter g/m 4m<Lin<8m:+5g/m Lin>8m:+9g/m
Connections between
units
Liquid line In.(mm) 1/4”(6.35)
Suction line In.(mm) 3/8”(9.53)
Max.tubing length m. Max.10
Max.height
difference
m. Max.6
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 14
2-8
PRODUCT DATA SHEET
Revision Y05-01 Service Manual - WMZ
Model Indoor Unit WMZ-12
Model Outdoor Unit GCZ-12
Installation Method of Pipe Flared
Characteristics Units cooling only Cooling Heating
Capacity
(1)
Btu/hr 11600 11600 12280
kW 3.4 3.4 3.6
Power input
(1)
kW 1.32 1.32 1.30
EER (Cooling) or COP(Heating)
(1)
W/W 2.58 2.58 2.77
Energy efficiency class E E E
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 6 6.0 5.9
Starting current A 33
Circuit breaker rating A 15
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 1270/1000
Air flow
(2)
H/M/L m3/hr 450/380
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 53/45
Sound pressure level
(4)
H/M/L dB(A) 41/34
Moisture removal l/hr 1.5
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 813X170X280
Weight kg 8.5
Package dimensions WxHxD mm 890X340X240
Packaged weight kg 12
Units per pallet units 32
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, TOSHIBA PH225X2C-4FS
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 735
Air flow H/L m3/hr 1460
Sound power level H/L dB(A) 66
Sound pressure level
(4)
H/L dB(A) 56
Dimensions WxHxD mm 770*245*545
Weight kg 36 37
Package dimensions WxHxD mm 880X310X610
Packaged weight kg 39.5
Units per pallet Units 12
Stacking height units 3 levels
Refrigerant type R22
Refrigerant chargless distance kg/m 1.18kg/4m
Additional charge per 1 meter g/m 4m<Lin<8m:+5g/m Lin>8m:+9g/m
Connections between
units
Liquid line In.(mm) 1/4”(6.35)
Suction line In.(mm) 1/2”(12.7)
Max.tubing length m. Max.10
Max.height
difference
m. Max.6
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 15
2-9
PRODUCT DATA SHEET
Revision Y05-01Service Manual - WMZ
Model Indoor Unit WMZ-17
Model Outdoor Unit GCZ-17
Installation Method of Pipe Flared
Characteristics Units cooling only Cooling Heating
Capacity
(1)
Btu/hr 17400 17400 18940
kW 5.1 5.10 5.55
Power input
(1)
kW 1.93 1.95 1.90
EER (Cooling) or COP(Heating)
(1)
W/W 2.64 2.62 2.92
Energy efficiency class
D
DD
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 9.4 9.5 9.3
Starting current A 45
Circuit breaker rating A 15
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 1100/850
Air flow
(2)
H/M/L m3/hr 830/580
External static pressure Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 60/54
Sound pressure level
(4)
H/M/L dB(A) 46/40
Moisture removal l/hr 1.8
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 1115*200*330
Weight kg 13
Package dimensions WxHxD mm 1200*300*420
Packaged weight kg 13
Units per pallet units 16
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary, TOSHIBA PH330X2CS-4KT3
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 920
Air flow H/L m3/hr 2160
Sound power level H/L dB(A) 66
Sound pressure level
(4)
H/L dB(A) 55
Dimensions WxHxD mm 795*290*610
Weight kg 42 43
Package dimensions WxHxD mm 945*395*655
Packaged weight kg 45 51
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R22
Refrigerant chargless distance kg/m 1.16kg/7.5m 1.28kg/7.5m
Additional charge per 1 meter g/m 4m<Lin<8m:+5g/m Lin>8m:+15g/m
Connections between
units
Liquid line In.(mm) 1/4”(6.35)
Suction line In.(mm) 1/2”(12.7)
Max.tubing length m. Max.15
Max.height
difference
m. Max.7
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 16
2-10
PRODUCT DATA SHEET
Revision Y05-01 Service Manual - WMZ
Model Indoor Unit WMZ-22
Model Outdoor Unit GCZ-22
Installation Method of Pipe Flared
Characteristics Units cooling only Cooling Heating
Capacity
(1)
Btu/hr 22690 22310 24530
kW 6.65 6.54 7.19
Power input
(1)
kW 2.35 2.33 2.46
EER (Cooling) or COP(Heating)
(1)
W/W 2.83 2.81 2.92
Energy efficiency class
C
CD
Power supply V/Ph/Hz 230V/Single/50Hz
Rated current A 10.4 10.4 11.0
Starting current A 60
Circuit breaker rating A 20
INDOOR
Fan type & quantity Cross flow x 1
Fan speeds H/M/L RPM 1300/950
Air flow
(2)
H/M/L m3/hr 990/690
External static
pressure
Min-Max Pa 0
Sound power level
(3)
H/M/L dB(A) 64/58
Sound pressure level
(4)
H/M/L dB(A) 50/44
Moisture removal l/hr 3.1
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 1115*200*330
Weight kg 14
Package dimensions WxHxD mm 1200*300*420
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8 levels
OUTDOOR
Refrigerant control Capillary tube
Compressor type, model Rotary,SHV33YC6-U
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 850
Air flow H/L m3/hr 2480
Sound power level H/L dB(A) 70
Sound pressure level
(4)
H/L dB(A) 61
Dimensions WxHxD mm 846*302*690
Weight kg 58
Package dimensions WxHxD mm 990*430*720
Packaged weight kg 62
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R22
Refrigerant chargless distance kg/m 1.99kg/7.5m 2.14kg/7.5m
Additional charge per 1 meter g/m 15m>Lin>7.5m:+57g/m
Connections between
units
Liquid line In.(mm) 3/8”(9.53)
Suction line In.(mm) 5/8”(15.88)
Max.tubing length m. Max.15
Max.height
difference
m. Max.7
Operation control type Remote control
Heating elements kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Page 17
3-1
RATING CONDITIONS
Revision Y05-01Service Manual - WMZ
3. RATING CONDITIONS
Standard conditions in accordance with ISO 5151, ISO 13253 (for ducted units)
and EN 14511.
Cooling:
Indoor: 27
o
C DB 19oC WB
Outdoor: 35
o
C DB
Heating:
Indoor: 20oC DB
Outdoor: 7
o
C DB 6oC WB
3.1 Operating Limits
3.1.1 R407C
Indoor Outdoor
Cooling
Upper limit
32oC DB 23oC WB 46oC DB
Lower limit 21oC DB 15oC WB 10oC DB
Heating
Upper limit
27oC DB 24oC DB 18oC WB
Lower limit 10oC DB -9oC DB -10oC WB
Voltage
1PH
198 – 264 V
3PH 360 – 440 V
3.1.2 R22
Indoor Outdoor
Cooling
Upper limit
32oC DB 23oC WB 46oC DB
Lower limit 21oC DB 15oC WB 10oC DB
Heating
Upper limit
27oC DB 24oC DB 18oC WB
Lower limit 10oC DB -5oC DB -6oC WB
Voltage
1PH
198 – 264 V
3PH 360 – 440 V
Page 18
4-1
OUTLINE DIMENSIONS
Revision Y05-01Service Manual - WMZ
4. OUTLINE DIMENSIONS
4.1 WMZ 7, 9, 12,
4.2 WMZ 17, 22
Page 19
4-2
OUTLINE DIMENSIONS
Revision Y05-01 Service Manual - WMZ
4.3 GCZ 7, 9, 12
4.4 GCZ 17
Page 20
4-3
OUTLINE DIMENSIONS
Revision Y05-01Service Manual - WMZ
4.5 GCZ 22
Page 21
5-1
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5. PERFORMANCE DATA
5.1 WMZ 7 GCZ 7 R22
5.1.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
2.28 2.36 2.41 2.47 2.51
SC
1.47 1.53 1.59 1.63 1.66
PI
0.55 0.55 0.56 0.56 0.56
20
(1)
TC
2.20 2.32 2.39 2.45 2.50
SC
1.44 1.52 1.58 1.63 1.66
PI
0.60 0.60 0.60 0.61 0.61
25
TC
2.08 2.25 2.37 2.44 2.50
SC
1.40 1.49 1.57 1.61 1.64
PI
0.65 0.65 0.66 0.66 0.67
30
TC
1.95 2.12 2.29 2.37 2.44
SC
1.36 1.44 1.54 1.58 1.61
PI
0.70 0.71
0.72
0.72 0.73
35
TC
1.80 1.96
2.16
2.27 2.38
SC
1.29 1.38 1.50 1.54 1.57
PI
0.75 0.77
0.78
0.79 0.79
40
TC
1.64 1.79
1.95
2.13 2.24
SC
1.22 1.31 1.42 1.46 1.49
PI
0.81 0.83 0.84 0.85 0.86
46
TC
1.42 1.56 1.71 1.89 2.04
SC
1.12 1.20 1.29 1.34 1.37
PI
0.89 0.90 0.92 0.94 0.95
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 22
5-2
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.1.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
1.18 0.56 1.14 0.60 1.09 0.63
-7
1.27 0.57 1.23 0.61 1.18 0.64
-2
1.35 0.58 1.31 0.62 1.26 0.65
2
1.64 0.61
1.58 0.65
1.51 0.69
6
2.32 0.65 2.25 0.70 2.17 0.74
10
2.52 0.69
2.45 0.74
2.39 0.79
15
2.72 0.72 2.66 0.78 2.59 0.83
20
2.87 0.74 2.80 0.81 2.72 0.87
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.2 Capacity Correction Factor Due to Tubing Length
5.2.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.05
1
0.968 --- --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.2.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.06
1
0.965 --- --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 23
5-3
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.3 Pressure Curves.
5.3.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 24
5-4
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.3.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 25
5-5
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.4 WMZ 9 GCZ 9 R22
5.4.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
2.69 2.78 2.85 2.92 2.96
SC
1.66 1.74 1.80 1.85 1.88
PI
0.71 0.71 0.71 0.71 0.72
20
(1)
TC
2.60 2.74 2.83 2.89 2.96
SC
1.63 1.72 1.79 1.84 1.88
PI
0.77 0.77 0.77 0.78 0.78
25
TC
2.46 2.66 2.79 2.88 2.95
SC
1.59 1.69 1.78 1.83 1.86
PI
0.83 0.84 0.84 0.85 0.85
30
TC
2.30 2.51 2.71 2.80 2.89
SC
1.54 1.64 1.74 1.79 1.83
PI
0.90 0.91
0.92
0.93 0.93
35
TC
2.13 2.31
2.55
2.68 2.80
SC
1.46 1.57 1.70 1.75 1.78
PI
0.97 0.98
1.00
1.01 1.01
40
TC
1.94 2.11
2.30
2.52 2.65
SC
1.38 1.49 1.61 1.66 1.69
PI
1.04 1.06 1.08 1.09 1.10
46
TC
1.68 1.84 2.02 2.23 2.41
SC
1.27 1.36 1.47 1.52 1.55
PI
1.14 1.16 1.18 1.20 1.21
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 26
5-6
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.4.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
1.44 0.80 1.39 0.85 1.33 0.90
-7
1.55 0.82 1.50 0.87 1.44 0.91
-2
1.65 0.83 1.60 0.88 1.54 0.93
2
2.01 0.87
1.93 0.93
1.84 0.98
6
2.83 0.94 2.75 1.00 2.65 1.06
10
3.08 0.99
3.00 1.06
2.92 1.13
15
3.33 1.03 3.25 1.11 3.16 1.18
20
3.51 1.06 3.42 1.15 3.33 1.24
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.5 Capacity Correction Factor Due to Tubing Length
5.5.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.06
1
0.956 --- --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.5.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.07
1
0.946 --- --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 27
5-7
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.6 Pressure Curves.
5.6.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 28
5-8
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.6.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
-10-50 5101520
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-10-50 5101520
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 29
5-9
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.7 WMZ 12 GCZ 12 R22
5.7.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
3.58 3.71 3.80 3.89 3.95
SC
2.27 2.37 2.46 2.52 2.57
PI
0.94 0.94 0.94 0.94 0.95
20
(1)
TC
3.47 3.65 3.77 3.86 3.94
SC
2.23 2.35 2.45 2.52 2.56
PI
1.02 1.02 1.02 1.03 1.03
25
TC
3.28 3.54 3.72 3.84 3.93
SC
2.17 2.30 2.43 2.50 2.54
PI
1.10 1.11 1.11 1.12 1.13
30
TC
3.07 3.34 3.61 3.74 3.85
SC
2.10 2.23 2.37 2.44 2.49
PI
1.18 1.20
1.21
1.22 1.23
35
TC
2.84 3.08
3.40
3.57 3.74
SC
2.00 2.14 2.32 2.39 2.43
PI
1.28 1.30
1.32
1.33 1.34
40
TC
2.58 2.81
3.07
3.35 3.53
SC
1.88 2.03 2.19 2.26 2.31
PI
1.38 1.40 1.42 1.44 1.45
46
TC
2.24 2.45 2.69 2.98 3.21
SC
1.73 1.86 2.00 2.07 2.12
PI
1.51 1.53 1.56 1.59 1.60
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 30
5-10
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.7.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
1.89 1.04 1.82 1.11 1.75 1.16
-7
2.03 1.07 1.96 1.12 1.89 1.19
-2
2.16 1.08 2.09 1.14 2.02 1.21
2
2.63 1.13
2.52 1.20
2.41 1.27
6
3.71 1.22 3.60 1.30 3.47 1.38
10
4.03 1.28
3.92 1.37
3.82 1.47
15
4.36 1.34 4.25 1.44 4.14 1.53
20
4.59 1.38 4.48 1.50 4.36 1.61
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.8 Capacity Correction Factor Due to Tubing Length
5.8.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.05
1
0.972 0.916 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.8.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.05
1
0.974 0.922 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 31
5-11
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.9 Pressure Curves.
5.9.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 32
5-12
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.9.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
28
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 33
5-13
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.10 WMZ 17 GCZ 17 R22
5.10.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
5.38 5.57 5.70 5.83 5.92
SC
3.55 3.71 3.85 3.95 4.02
PI
1.37 1.37 1.37 1.38 1.38
20
(1)
TC
5.20 5.48 5.65 5.79 5.91
SC
3.48 3.67 3.83 3.94 4.01
PI
1.49 1.49 1.50 1.50 1.51
25
TC
4.92 5.31 5.59 5.75 5.90
SC
3.40 3.60 3.80 3.91 3.98
PI
1.61 1.62 1.63 1.64 1.65
30
TC
4.60 5.01 5.41 5.61 5.77
SC
3.29 3.49 3.72 3.82 3.90
PI
1.73 1.76
1.77
1.79 1.80
35
TC
4.26 4.62
5.10
5.36 5.61
SC
3.13 3.35 3.63 3.74 3.81
PI
1.87 1.90
1.93
1.94 1.96
40
TC
3.87 4.22
4.60
5.03 5.29
SC
2.95 3.17 3.43 3.54 3.62
PI
2.02 2.05 2.08 2.11 2.13
46
TC
3.36 3.68 4.04 4.47 4.81
SC
2.71 2.91 3.13 3.24 3.31
PI
2.20 2.23 2.29 2.32 2.34
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 34
5-14
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.10.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
2.91 1.52 2.80 1.62 2.69 1.70
-7
3.14 1.56 3.02 1.64 2.91 1.73
-2
3.33 1.58 3.22 1.67 3.11 1.77
2
4.05 1.65
3.89 1.76
3.72 1.86
6
5.72 1.78 5.55 1.90 5.36 2.02
10
6.22 1.88
6.05 2.00
5.88 2.14
15
6.72 1.96 6.55 2.11 6.38 2.24
20
7.08 2.01 6.91 2.19 6.72 2.36
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.11 Capacity Correction Factor Due to Tubing Length
5.11.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.02
1
0.985 0.946 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.11.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.02
1
0.989 0.971 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 35
5-15
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.12 Pressure Curves.
5.12.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 36
5-16
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.12.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 37
5-17
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.13 WMZ 22 GCZ 22 R22
5.13.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
6.89 7.14 7.31 7.48 7.59
SC
4.48 4.67 4.85 4.97 5.06
PI
1.65 1.66 1.66 1.66 1.67
20
(1)
TC
6.67 7.03 7.25 7.42 7.58
SC
4.39 4.62 4.82 4.96 5.05
PI
1.79 1.80 1.81 1.82 1.82
25
TC
6.31 6.81 7.16 7.38 7.56
SC
4.27 4.53 4.78 4.92 5.01
PI
1.94 1.95 1.96 1.98 1.99
30
TC
5.90 6.43 6.94 7.19 7.40
SC
4.14 4.40 4.68 4.81 4.91
PI
2.09 2.12
2.14
2.16 2.18
35
TC
5.46 5.93
6.54
6.87 7.19
SC
3.94 4.22 4.57 4.70 4.79
PI
2.25 2.29
2.33
2.35 2.36
40
TC
4.97 5.41
5.90
6.45 6.79
SC
3.71 3.99 4.32 4.46 4.55
PI
2.43 2.47 2.51 2.54 2.57
46
TC
4.31 4.71 5.18 5.73 6.17
SC
3.42 3.66 3.94 4.08 4.17
PI
2.66 2.70 2.76 2.80 2.83
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 38
5-18
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.13.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
3.77 1.97 3.63 2.10 3.49 2.20
-7
4.06 2.02 3.92 2.13 3.77 2.24
-2
4.31 2.04 4.17 2.16 4.03 2.29
2
5.25 2.14
5.03 2.28
4.82 2.41
6
7.41 2.30 7.19 2.46 6.94 2.61
10
8.05 2.43
7.84 2.60
7.62 2.77
15
8.70 2.53 8.48 2.73 8.27 2.90
20
9.17 2.61 8.95 2.83 8.70 3.05
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.14 Capacity Correction Factor Due to Tubing Length
5.14.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.03
1
0.976 0.946 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.14.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.05
1
0.979 0.965 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 39
5-19
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.15 Pressure Curves.
5.15.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 40
5-20
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.15.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 41
5-21
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.16 WMZ 7 GCZ 7 R407C
5.16.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
2.12 2.19 2.25 2.30 2.33
SC
1.44 1.50 1.56 1.60 1.63
PI
0.55 0.55 0.55 0.55 0.55
20
(1)
TC
2.05 2.16 2.23 2.28 2.33
SC
1.41 1.49 1.55 1.59 1.62
PI
0.59 0.59 0.60 0.60 0.60
25
TC
1.94 2.09 2.20 2.27 2.32
SC
1.37 1.46 1.54 1.58 1.61
PI
0.64 0.64 0.65 0.65 0.66
30
TC
1.81 1.97 2.13 2.21 2.27
SC
1.33 1.42 1.50 1.55 1.58
PI
0.69 0.70
0.71
0.71 0.72
35
TC
1.68 1.82
2.01
2.11 2.21
SC
1.27 1.36 1.47 1.51 1.54
PI
0.75 0.76
0.77
0.78 0.78
40
TC
1.53 1.66
1.81
1.98 2.09
SC
1.19 1.28 1.39 1.43 1.46
PI
0.80 0.82 0.83 0.84 0.85
46
TC
1.32 1.45 1.59 1.76 1.90
SC
1.10 1.18 1.27 1.31 1.34
PI
0.88 0.89 0.91 0.92 0.94
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 42
5-22
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.16.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
1.18 0.58 1.13 0.61 1.09 0.64
-7
1.27 0.59 1.22 0.62 1.18 0.66
-2
1.34 0.60 1.30 0.63 1.25 0.67
2
1.64 0.63
1.57 0.67
1.50 0.71
6
2.31 0.67 2.24 0.72 2.16 0.76
10
2.51 0.71
2.44 0.76
2.37 0.81
15
2.71 0.74 2.64 0.80 2.58 0.85
20
2.86 0.76 2.79 0.83 2.71 0.89
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.17 Capacity Correction Factor Due to Tubing Length
5.17.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.03
1
0.972 --- --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.17.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.05
1
0.961 --- --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 43
5-23
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.18 Pressure Curves.
5.18.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(W B/DB ºC)
17/24(W B/DB ºC)
19/27(W B/DB ºC)
21/29(W B/DB ºC)
23/32(W B/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 44
5-24
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.18.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
28
30
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 45
5-25
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.19 WMZ 9 GCZ 9 R407C
5.19.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
2.69 2.78 2.85 2.92 2.96
SC
1.75 1.83 1.90 1.95 1.98
PI
0.74 0.75 0.75 0.75 0.75
20
(1)
TC
2.60 2.74 2.83 2.89 2.96
SC
1.72 1.81 1.89 1.94 1.98
PI
0.81 0.81 0.81 0.82 0.82
25
TC
2.46 2.66 2.79 2.88 2.95
SC
1.67 1.78 1.87 1.93 1.96
PI
0.87 0.88 0.89 0.89 0.90
30
TC
2.30 2.51 2.71 2.80 2.89
SC
1.62 1.72 1.83 1.89 1.92
PI
0.94 0.96
0.96
0.97 0.98
35
TC
2.13 2.31
2.55
2.68 2.80
SC
1.54 1.65 1.79 1.84 1.88
PI
1.02 1.03
1.05
1.06 1.06
40
TC
1.94 2.11
2.30
2.52 2.65
SC
1.45 1.56 1.69 1.75 1.78
PI
1.10 1.11 1.13 1.15 1.16
46
TC
1.68 1.84 2.02 2.23 2.41
SC
1.34 1.43 1.54 1.60 1.63
PI
1.20 1.22 1.24 1.26 1.28
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 46
5-26
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.19.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
1.44 0.82 1.39 0.87 1.33 0.91
-7
1.55 0.84 1.50 0.88 1.44 0.93
-2
1.65 0.85 1.60 0.90 1.54 0.95
2
2.01 0.89
1.93 0.94
1.84 1.00
6
2.83 0.95 2.75 1.02 2.65 1.08
10
3.08 1.01
3.00 1.08
2.92 1.15
15
3.33 1.05 3.25 1.13 3.16 1.20
20
3.51 1.08 3.42 1.17 3.33 1.26
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.20 Capacity Correction Factor Due to Tubing Length
5.20.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.03
1
0.965 --- --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.20.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.05
1
0.961 --- --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 47
5-27
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.21 Pressure Curves.
5.21.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 48
5-28
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.21.2 Heating
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 49
5-29
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.22 WMZ 12 GCZ 12 R407C
5.22.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
3.28 3.39 3.48 3.56 3.61
SC
2.03 2.11 2.20 2.25 2.29
PI
0.89 0.89 0.89 0.89 0.90
20
(1)
TC
3.17 3.34 3.45 3.53 3.61
SC
1.99 2.09 2.18 2.25 2.29
PI
0.96 0.97 0.97 0.97 0.98
25
TC
3.00 3.24 3.41 3.51 3.59
SC
1.94 2.05 2.17 2.23 2.27
PI
1.04 1.05 1.05 1.06 1.07
30
TC
2.81 3.06 3.30 3.42 3.52
SC
1.88 1.99 2.12 2.18 2.22
PI
1.12 1.14
1.15
1.16 1.17
35
TC
2.60 2.82
3.11
3.27 3.42
SC
1.78 1.91 2.07 2.13 2.17
PI
1.21 1.23
1.25
1.26 1.27
40
TC
2.36 2.57
2.81
3.07 3.23
SC
1.68 1.81 1.96 2.02 2.06
PI
1.31 1.33 1.35 1.36 1.38
46
TC
2.05 2.24 2.46 2.72 2.93
SC
1.55 1.66 1.79 1.85 1.89
PI
1.43 1.45 1.48 1.50 1.52
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 50
5-30
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.22.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
1.76 1.02 1.69 1.09 1.62 1.15
-7
1.89 1.05 1.83 1.11 1.76 1.17
-2
2.01 1.06 1.94 1.13 1.88 1.19
2
2.45 1.11
2.35 1.18
2.24 1.25
6
3.45 1.20 3.35 1.28 3.23 1.36
10
3.75 1.26
3.65 1.35
3.55 1.44
15
4.05 1.32 3.95 1.42 3.85 1.51
20
4.27 1.36 4.17 1.47 4.05 1.59
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.23 Capacity Correction Factor Due to Tubing Length
5.23.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.02
1
0.984 0.952 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.23.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.03
1
0.982 0.947 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 51
5-31
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.24 Pressure Curves.
5.24.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(W B/DB ºC)
17/24(W B/DB ºC)
19/27(W B/DB ºC)
21/29(W B/DB ºC)
23/32(W B/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(W B/DB ºC)
17/24(W B/DB ºC)
19/27(W B/DB ºC)
21/29(W B/DB ºC)
23/32(W B/DB ºC)
Page 52
5-32
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.24.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
28
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 53
5-33
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.25 WMZ 17 GCZ 17 R407C
5.25.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
5.59 5.79 5.92 6.06 6.15
SC
3.55 3.70 3.84 3.94 4.01
PI
1.44 1.44 1.45 1.45 1.46
20
(1)
TC
5.40 5.70 5.88 6.02 6.14
SC
3.47 3.66 3.82 3.93 4.00
PI
1.56 1.57 1.57 1.58 1.58
25
TC
5.11 5.52 5.81 5.98 6.13
SC
3.39 3.59 3.79 3.90 3.97
PI
1.69 1.70 1.71 1.72 1.73
30
TC
4.78 5.21 5.63 5.83 6.00
SC
3.28 3.49 3.71 3.81 3.89
PI
1.82 1.85
1.86
1.88 1.90
35
TC
4.43 4.80
5.30
5.57 5.83
SC
3.12 3.34 3.62 3.72 3.80
PI
1.96 2.00
2.03
2.05 2.06
40
TC
4.03 4.38
4.78
5.23 5.50
SC
2.94 3.16 3.42 3.53 3.61
PI
2.12 2.15 2.19 2.22 2.24
46
TC
3.49 3.82 4.20 4.64 5.00
SC
2.71 2.90 3.12 3.23 3.30
PI
2.32 2.35 2.40 2.44 2.47
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 54
5-34
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.25.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
2.89 1.56 2.78 1.66 2.67 1.75
-7
3.11 1.60 3.00 1.69 2.89 1.78
-2
3.30 1.62 3.19 1.72 3.08 1.81
2
4.02 1.70
3.85 1.80
3.69 1.91
6
5.67 1.82 5.50 1.95 5.31 2.07
10
6.16 1.92
6.00 2.06
5.83 2.20
15
6.66 2.01 6.49 2.16 6.33 2.30
20
7.01 2.07 6.85 2.24 6.66 2.42
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.26 Capacity Correction Factor Due to Tubing Length
5.26.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.02
1
0.988 0.951 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.26.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.00
1
0.989 0.967 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 55
5-35
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.27 Pressure Curves.
5.27.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 56
5-36
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.27.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
28
30
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 57
5-37
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.28 WMZ 22 GCZ 22 R407C
5.28.1 Cooling Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB
OU COIL (°C)
DATA
ENTERING AIR WB/DB ID COIL ( °C)
15/21 17/24 19/27 21/29 23/32
15
(1)
TC
6.89 7.14 7.31 7.48 7.59
SC
4.64 4.84 5.03 5.16 5.25
PI
1.84 1.85 1.85 1.85 1.86
20
(1)
TC
6.67 7.03 7.25 7.42 7.58
SC
4.55 4.80 5.00 5.14 5.24
PI
2.00 2.01 2.01 2.03 2.03
25
TC
6.31 6.81 7.16 7.38 7.56
SC
4.43 4.70 4.96 5.10 5.20
PI
2.16 2.18 2.19 2.21 2.22
30
TC
5.90 6.43 6.94 7.19 7.40
SC
4.29 4.56 4.85 4.99 5.09
PI
2.33 2.37
2.39
2.41 2.43
35
TC
5.46 5.93
6.54
6.87 7.19
SC
4.08 4.38 4.74 4.88 4.97
PI
2.52 2.56
2.60
2.62 2.63
40
TC
4.97 5.41
5.90
6.45 6.79
SC
3.85 4.14 4.48 4.63 4.72
PI
2.71 2.76 2.80 2.84 2.87
46
TC
4.31 4.71 5.18 5.73 6.17
SC
3.54 3.80 4.09 4.23 4.33
PI
2.97 3.01 3.08 3.12 3.16
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
(1) Marked area is below standard operating limits. For operating in low ambient
conditions, refer to Optional Accessories (Chapter 15).
Page 58
5-38
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.28.2 Heating Mode at 7.5m Tubing Connection.
230V : Indoor Fan at High Speed.
ENTERING AIR DB ID COIL ( °C)
15 20 25
ENTERING AIR WB
OU COIL ( °C)
TH PI TH PI TH PI
-10
3.66 2.13 3.52 2.27 3.39 2.38
-7
3.94 2.18 3.80 2.30 3.66 2.43
-2
4.19 2.21 4.05 2.34 3.91 2.47
2
5.10 2.31
4.89 2.46
4.68 2.61
6
7.19 2.49 6.98 2.66 6.74 2.82
10
7.82 2.63
7.61 2.81
7.40 3.00
15
8.45 2.74 8.24 2.95 8.03 3.14
20
8.90 2.82 8.69 3.06 8.45 3.30
* the above chart includes the weighted deicing infleuence.
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU – Outdoor
5.29 Capacity Correction Factor Due to Tubing Length
5.29.1 Cooling
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.03
1
0.976 0.946 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
5.29.2 Heating
TOTAL TUBING LENGTH (One Way)
3m
7.5m
10m 15m 20m 25m 30m 40m 50m
1.06
1
0.979 0.973 --- --- --- --- ---
* Minimum recommended tubing length between indoor and outdoor units is 3m.
Page 59
5-39
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - WMZ
5.30 Pressure Curves.
5.30.1 Cooling.
Discharge Pressure VS.Outdoor Temp
8
10
12
14
16
18
20
22
24
26
28
30
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Discharge Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Suction Pressure VS.Outdoor Temp
3.0
3.5
4.0
4.5
5.0
5.5
6.0
15 20 25 30 35 40 46
Outdoor Temp.(DB oC )
Suction Pressure (Bar[g])
15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)
Page 60
5-40
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - WMZ
5.30.2 Heating.
Discharge Pressure VS.Outdoor Temp
10
12
14
16
18
20
22
24
26
28
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Discharge Pressure(Bar[g])
25 DB (ºC)
20 DB (ºC)
15 DB (ºC)
Suction Pressure VS.Outdoor Temp
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-10 -5 0 5 10 15 20
Outdoor Temp.( WB oC )
Suction Pressure(Bar[g])
15 DB (ºC)
20 DB (ºC)
25 DB (ºC)
Page 61
6-1
SOUND LEVEL CHARACTERISTICS
Revision Y05-01Service Manual - WMZ
6. SOUND LEVEL CHARACTERISTICS
6.1 Sound Pressure Level
Figure 1. Wall Mounted Figure 2. Floor Mounted
Figure 3. Ducted Figure 4. Cassette
6.2 Soud Pressure Level Spectrum (Measured as Figure 1)
WMZ 7 WMZ 9
NC (Noise Criteria) Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
Approximate
threshold of
rearing for
continuous
noise
Octave Band Sound Press. Level [dB re 20 mPa]
Octave Band Center Frequencies [Hz]
FAN SPEED LINE
HI
ME
LO
NC (Noise Criteria) Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
Approximate
threshold of
rearing for
continuous
noise
Octave Band Sound Press. Level [dB re 20 mPa]
Octave Band Center Frequencies [Hz]
2. Floor Mounted
(Measured
N
C55
N
C60
NC65
125 250 500 1000 2000
90
0
125 250 500 1000 2000 4
8
re 20
available
(Me (Me
ta
av
Page 62
6-2
SOUND LEVEL CHARACTERISTICS
Revision Y05-01 Service Manual - WMZ
6.3 Outdoor units
MODEL SPL dB(A) SPW dB(A)
Indoor Outdoor Cooling/Heating Cooling/Heating
WMZ 7 GCZ 7 53/53 63/63
WMZ 9 GCZ 9 56/56 66/66
WMZ 12 GCZ 12 58/58 68/68
WMZ 17 GCZ 17 56/56 66/66
WMZ 22 GCZ 22 61/61 71/71
6.4 Sound Pressure Level Spectrum (Measured as Figure 5)
Cooling Heating
Figure 5. Microphone Distance from Unit
NC (Noise Criteria) Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
Approximate
threshold of
rearing for
continuous
noise
Octave Band Sound Press. Level [dB re 20 mPa]
Octave Band Center Frequencies [Hz]
MODEL LINE
OU8-33
OU10-44
GC-18
GC-24
NC (Noise Criteria) Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
Approximate
threshold of
rearing for
continuous
noise
Octave Band Sound Press. Level [dB re 20 mPa]
Octave Band Center Frequencies [Hz]
71/7
1
60
25 250 500 1000 2000 40
e
of
80
90
fo
e
e Band Center Frequencies
available n
is
no
a
vailable now
va
va
Page 63
7-1
ELECTRICAL DATA
Revision Y05-01Service Manual - WMZ
7. ELECTRICAL DATA
7.1 Single Phase Units
MODEL WMZ 7 WMZ 12 WMZ 9
Power Supply
To indoor To indoor To indoor
1PH-230V-50Hz 1PH-230V-50Hz 1PH-230V-50Hz
Max Current, A 4.2 8.4 5.9
Circuit Breaker 10 15 10
Power Supply Wiring
No. X Cross Section mm
2
3x1.0 mm
2
3x1.5 mm
2
3x1.0 mm
2
Interconnecting Cable RCModel
No. X Cross Section mm
2
5x1.0 mm2 +2x0.5 mm2
(OCT senser)
5x1.5 mm2 +2x0.5 mm2
(OCT senser)
5x1.0 mm2 +2x0.5 mm2
(OCT senser)
Interconnecting Cable STModel
No. X Cross Section mm
2
4x1.0 mm
2
4x1.5 mm
2
4x1.0 mm
2
MODEL WMZ 17 WMZ 22
Power Supply
To indoor To indoor
1PH-230V-50Hz 1PH-230V-50Hz
Max Current, A 13 16
Circuit Breaker 15 20
Power Supply Wiring No.
X Cross Section mm
2
3x1.5 mm
2
3x2.5 mm
2
Interconnecting Cable RCModel
No. X Cross Section mm
2
5x1.5 mm2 +2x0.5 mm2
(OCT senser)
5x2.5 mm2 +2x0.5 mm2
(OCT senser)
Interconnecting Cable STModel
No. X Cross Section mm
2
4x1.5 mm
2
4x2.5 mm
2
NOTE
Power wiring cord should comply with local lows and electrical
regulations requirements.
Page 64
8-1
WIRING DIAGRAMS
Revision Y05-01Service Manual - WMZ
8. WIRING DIAGRAMS
8.1 Indoor Unit WMZ 7,9,12
8.2 Indoor Unit WMZ 17,22
Page 65
8-2
WIRING DIAGRAMS
Revision Y05-01 Service Manual - WMZ
8.3 Outdoor Unit GCZ 7,9,12,17
8.4 Outdoor Unit GCZ 22
Page 66
9-1
ELECTRICAL CONNECTIONS
Revision Y05-01Service Manual - WMZ
9. ELECTRICAL CONNECTIONS
9.1 WMZ 7,9,12,17,22
Page 67
10-1
REFRIGERATION DIAGRAMS
Revision Y05-01Service Manual - WMZ
10. REFRIGERATION DIAGRAMS
10.1 Heat Pump Models
10.1.1 WMZ 7,9 RC R407C and WMZ 9,12 RC R22
tube
Capillary
tube
Capillary
Sensor
Indoor coil
connection
Flared
Valves
port
Service
Compressor
valve
Reverse
Strainer
Strainer
Outdoor coil
Sensor
Indoor coil
Sensor
connection
Flared
Valves
port
Service
Compressor
valve
Reverse
Strainer
Strainer
Outdoor coil
Sensor
INDOOR UNIT
OUTDOOR UNIT
HEATING MODE
COOLING MODE
INDOOR UNIT
OUTDOOR UNIT
tube
Capillary
tube
Capillary
Sensor
Indoor coil
connection
Flared
Valves
port
Service
Compressor
valve
Reverse
Strainer
Strainer
Outdoor coil
Sensor
Indoor coil
Sensor
connection
Flared
Valves
port
Service
Compressor
valve
Reverse
Strainer
Strainer
Outdoor coil
Sensor
INDOOR UNIT
OUTDOOR UNIT
HEATING MODE
COOLING MODE
INDOOR UNIT
OUTDOOR UNIT
Page 68
10-2
REFRIGERATION DIAGRAMS
Revision Y05-01 Service Manual - WMZ
10.1.2 WMZ12,17,22 RC R407C and WMZ 7, 17, 22 R22
Strainer
Strainer
valve
Check
Capillary
tube
Capillary
tube
tube
Capillary
tube
Capillary
Sensor
Indoor coil
connection
Flared
Valves
port
Service
Compressor
valve
Reverse
Strainer
Outdoor coil
Sensor
Indoor coil
Sensor
connection
Flared
Valves
port
Service
Compressor
valve
Reverse
Strainer
Outdoor coil
Sensor
Check
valve
INDOOR UNIT
OUTDOOR UNIT
HEATING MODE
COOLING MODE
INDOOR UNIT
OUTDOOR UNIT
Strainer
Strainer
valve
Check
Capillary
tube
Capillary
tube
tube
Capillary
tube
Capillary
Sensor
Indoor coil
connection
Flared
Valves
port
Service
Compressor
valve
Reverse
Strainer
Outdoor coil
Sensor
Indoor coil
Sensor
connection
Flared
Valves
port
Service
Compressor
valve
Reverse
Strainer
Outdoor coil
Sensor
Check
valve
INDOOR UNIT
OUTDOOR UNIT
HEATING MODE
COOLING MODE
INDOOR UNIT
OUTDOOR UNIT
Page 69
10-3
REFRIGERATION DIAGRAMS
Revision Y05-01Service Manual - WMZ
10.2 Cooling Only Models
10.2.1 WMZ 7, 9, 12, 17, 22 RC R407C and R22
Strainer
Capillary
tube
port
Service
Flared
connection
Valves
Compressor
Outdoor coil
Indoor coil
Sensor
Sensor
INDOOR UNIT
OUTDOOR UNIT
Strainer
Capillary
tube
port
Service
Flared
connection
Valves
Compressor
Outdoor coil
Indoor coil
Sensor
Sensor
INDOOR UNIT
OUTDOOR UNIT
Page 70
11-1
TUBING CONNECTIONS
Revision Y05-01Service Manual - WMZ
11. TUBING CONNECTIONS
TUBE (Inch)
TORQUE (Nm)
¼” ⅜” ½” ⅝” ¾”
Flare Nuts 11-13 40-45 60-65 70-75 80-85
Valve Cap 13-20 13-20 18-25 18-25 40-50
Service Port Cap 11-13 11-13 11-13 11-13 11-13
1. Valve Protection Cap-end
2. Refrigerant Valve Port (use Allen wrench to open/close)
3. Valve Protection Cap
4. Refrigerant Valve
5. Service Port Cap
6. Flare Nut
7. Unit Back Side
8. Copper Tube
When the outdoor unit is installed above the indoor unit an oil trap is required every 5m along the suction
line at the lowest point of the riser. Incase the indoor unit is installed above the outdoor, no trap is
required.
Page 71
12-1
CONTROL SYSTEM
Revision Y05-01Service Manual - WMZ
12. CONTROL SYSTEM WMZ 7-22
12.1 Electronic Control
12.1.1 Introduction
The electronic control information is designed for service applications, and is common
to the following groups of air-conditioners:
• ST/ RC group -Cooling only / cooling and heating by heat pump.
• SH group -Cooling and heating by heat pump and supplementary
heater.
• RH group -Cooling, heating by heaters only.
12.1.2 Jumpers Settings
GROUP J6 Setting J2 Setting
ST / RC Open Open
SH Closed Open
RH Closed Closed
Page 72
12-2
CONTROL SYSTEM
Revision Y05-01 Service Manual - WMZ
12.2 Legend
AC - Alternate Current
A/C - Air-Conditioner
ANY - ON or OFF status
CLOCK - ON/OFF Operation Input, (dry contact)
COMP - Compressor
CPU - Central Processing Unit
ELUM - Extended Louver Upward Movement (Software Jumper)
E²PROM, EEP - Erase Enable Programmable Read Only Memory
HE - Heating Element
HPC - High Pressure Control
H/W - Hardware
ICP - Indoor Condensation Pump
ICT - Indoor Coil Temperature (RT2) sensor
IF, IFAN - Indoor Fan
IR - Infra Red
LEVEL1 - Normal Water Level
LEVEL2/3 - Medium/High Water Level
LEVEL4 - Overflow Level
Max - Maximum
Min - Minimum
min - Minute (time)
NA - Not Applicable
OCP - Outdoor Condensation Pump
OCT - Outdoor Coil Temperature (RT3) sensor
OF, OFAN - Outdoor Fan
OPER - Operate
Para. - Paragraph
RAT - Return Air Temperature (RT1) sensor
RC - Reverse Cycle (Heat Pump)
R/C - Remote Control
RCT - Remote Control Temperature
RH - Resistance Heater
RT - Room Temperature (i.e. RCT in IFEEL mode, RAT otherwise)
RV - Reversing Valve
SB, STBY - Stand-By
sec - Second (time)
Sect - Section
SH - Supplementary Heater
SPT - Set Point Temperature
ST - Standard (a Model with Cooling Only)
S/W - Software
TEMP - Temperature
W/O - Without
WVL - Water Valve
∆T - The difference between SPT and RT.
in Heat Mode: ∆T = SPT-RT
in Cool/Dry/Fan Mode: ∆T = RT-SPT
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CONTROL SYSTEM
Revision Y05-01Service Manual - WMZ
12.3 Main PCB Controller
12.3.1 WMZ 7-22 (LEXAN) WMZ 7-22 Display PCB
STBY LED RECIVER
MODE BUTTON
OPR’ LED
RECIVER
STBY LED
MODE BUTTON OPR’ LED
Page 74
12-4
CONTROL SYSTEM
Revision Y05-01 Service Manual - WMZ
12.4 General functions
12.4.1 COMP operation
For each Mode including POWER OFF & SB, a Min time delay of 3 min
before COMP restarting, excluding DEICING Mode
The Min operation time of COMP under different operating conditions is
Operation Mode
Min operation time of
COMP
Heat, Cool or Auto Modes 3 min.
Fan, Dry, Overflow, Protection modes, or mode change ignored
12.4.2 IFAN operation
• Min time interval between IFAN speed change in AUTOFAN Mode, is 30 sec.
• Min time interval between IFAN speed change in H/M/L Mode is 1 sec.
• IFAN speed in Heat/Cool Autofan Mode is determined according to the following table:
∆T IFAN Speed
∆T ≥ 2HIGH
2 ≥ ∆T ≥ 1 MED
1 ≥ ∆T LOW
where in Heat Mode: ∆T = SPT-RT
in Cool Mode: ∆T = RT-SPT
Note:
• In Heat Mode, the rules in section 4.0.3 have the higher priority.
• The table above can be represent by a hysteresis curve which
will minimize the switching of the IFAN relay and will minimize the
change in IFAN speed:
T [oc]
L
M
H
IFAN speed
321
12.4.3 OFAN operation
• Min time interval between OFAN ON/OFF state change is 30 sec.
• In general, OFAN starts together with COMP.
12.4.4 HE operation
• Minimum Heaters ON or OFF time is 30 sec.
• Heaters can be activated only if IFAN is on.
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CONTROL SYSTEM
Revision Y05-01Service Manual - WMZ
12.4.5 Protections
• High pressure protection is applicable to all operating modes.
• Deicing control is valid in Heat and Auto Heat Mode only.
• Defrosting control is valid in Dry, Cool, Heat and Auto Modes.
• No reset after protection modes.
12.4.6 Thermistors operation
• Return air Temp. is detected by RAT (RT1) in normal Mode, or by RCT (R/C sensor)
in I-FEEL Mode.
• Indoor Coil Temp. is detected by ICT (RT2).
12.4.6.1 Definition of thermistor faults:
a. Thermistor is disconnected The thermistor reading is below -30
o
c.
b. Thermistor is shorted The thermistor reading is over 75
o
c.
c. Thermistor Temp reading doesn’t change (irrelevant for RT1) -
(i) This test is performed only once after a unit is switched from
OFF/STBY to operation. At the first occurrence of 10 min
continuous COMP operation, the current ICT & OCT are
compared with those when the COMP was switched from OFF
to ON 10 min before. If the ∆T is less than 3
o
c, the thermistor is
regarded as defective.
(ii) The ICT and OCT no-change error can be disabled together by
connecting a4.7 kohm resistor (5%) to the OCT connector. These
resistors are equivalent to a thermistor at 43+/-1
o
c and 48+/-1oc
respectively.
(iii) Connecting a 4.7k resistor to the ICT connector will disable the
ICT no-change error only.
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CONTROL SYSTEM
Revision Y05-01 Service Manual - WMZ
12.4.6.2 Handling the thermistor faults in a COMP unit
i. ICT/OCT thermistor is disconnected or shorted -
The invalid thermistor temperature is replaced by 43oc, so that the unit
can continue the normal operation. All protections related to that faulty
thermistor will be disabled. For example, in case of any ICT fault, the ICT
high pressure protection in Heat Mode and ICT defrost protection in Cool
Mode will not operate anymore. The same is also applied to the OCT fault.
ii. RAT thermistor is disconnected or shorted –
The RAT will be derived from the ICT by using the equations :
Heat Mode: RAT=ICT/2.3
Cool Mode RAT=ICT*4
Notes:
• In case of any thermistor failure, the STBY LED will be blinking until the
fault condition is corrected.
• User can use the system diagnostics function to find out the nature of
the thermistor faults.
i. RAT thermistor is disconnected or shorted –
System will operate continuously in the last IFAN & WVL status when
turned ON.
Notes:
• As in the COMP unit, the STBY LED will be blinking to indicate a
thermistor fault. And, the user can use the system diagnostics function
to find out the nature of the fault.
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Revision Y05-01Service Manual - WMZ
12.5 Cooling Mode - General
1) Room Temperature, RT, is detected by
• RAT in normal operation, or
• RCT (R/C sensor) in I-FEEL mode.
2) The resolution of RT is 1
o
c.
• RT is activating COMP/WVL if (RT > SPT), and
• RT is stopping COMP/WVL if (RT =< SPT).
3) Indoor Coil Temp is detected by ICT (RT2).
4) Outdoor Coil Temp is detected by OCT (RT3).
5) OFAN OPERATIONS
• OFAN starts together with COMP in general.
12.5.1 Cooling
Mode: Cool, Auto (at Cooling)
Temp: Selected desired temperature.
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CONTROL SYSTEM
Revision Y05-01 Service Manual - WMZ
Fan: HIGH, MED, LOW
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level by comparing RT and SPT.
(RT - SPT) [oc]
+3
+2
+1
0
-1
-2
ON
OFF
ON
OFF
USER FAN SPEED
ON
OFF
COMP
(WVL)
OFAN
IFAN
RV
Note:
1) IFAN is always running at High, Medium or Low speed selected by user.
2) In IFEEL mode, the Room Temperature (RT) is the RCT from a R/C. Otherwise, the
RT is the RAT from the Room Thermistor.
Page 79
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Revision Y05-01Service Manual - WMZ
12.5.2 Cooling with Autofan
Mode: Cool, Auto (at cooling)
Temp: Selected desired temperature
Fan: Auto
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level and controls the IFAN speed for optimal comfort.
(RT - SPT) [oc]
+3
+2
+1
0
-1
-2
ON
OFF
ON
OFF
H
L
M
ON
OFF
COMP
(WVL)
OFAN
IFAN
RV
Page 80
12-10
CONTROL SYSTEM
Revision Y05-01 Service Manual - WMZ
12.6 Heating Mode
12.6.1 Heating Mode - General
• In heating Mode, temp. compensation schedule will be activated for wall mounted
units.
SPT [oc]
Add to SPT
I-FEEL ON I-FEEL OFF
18 ≤ SPT ≤ 27 0
o
c +2 oc
27 < SPT ≤ 30 0
o
c +3 oc
Notes :
• No compensation will be activated in Forced operation modes
12.6.2 IF operating rules
• As a general rule for RC and SH groups, when COMP is ON, excluding
protection modes, IFAN will be switched ON if
• ICT > 35
o
c or
at the IFTC 30 sec after the COMP is switched ON. In
this case, the IFAN will be started at low speed.
Notes :
1) In SH or RC group, if HE is set to OFF due to low ICT, IFAN will be
switched to LOW and will be turned OFF after 30 sec.
2) An exception to this rule (4.0.3.a) is the Back-up mode for SH.
• In RC and SH groups, whenever COMP & HE are both
OFF, excluding protection modes, IFAN operation will be according
to the following:
In other models IFAN will operate in low speed for 30 sec and then stop. If
COMP is OFF for more than 3 minutes and IFEEL Mode is inactive, IFAN will
operate in low speed according to the following graph:
IFAN Speed
Any
Low
Stop
30 35 40
EMD/ELD
EMD/ELD
ICT [oc]
15 20 25
General :
For WAX :
SPT+4 SPT+6 ICT
[
o
c
]
ON
OFF
IFAN (Low Speed)
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Revision Y05-01Service Manual - WMZ
12.6.3 HE operation
• For all Groups, HE can be ON only when IFAN is ON.
• For all Groups, HE switches to OFF when ICT > 50
o
c, and is activated
again when ICT ≤ 45
o
c.
• In SH or RC group, HE operation is limited by the following graph:
• Back-up mode for SH group
After COMP has been working for 5 minutes, HE & IFAN are activated even
if the ICT is still below 35
o
c. This situation is called Back-up Mode. Both
HE & IFAN will work in Back-up Mode until the ICT reaches 35
o
c. Then, the
operation goes on in the usual mode .
HE
ON
OFF
30
45 50
ICT [oc]
15
General :
For WAX :
35
20
40
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Revision Y05-01 Service Manual - WMZ
12.6.4 Heating, RC or SH Group
Mode: Heat, Auto (at heating)
Temp: Selected desired temperature
Fan: HIGH, MED, LOW
Timer: Any
I Feel: On or Off
Control function
Maintains room temp. at desired level by comparing RAT or RCT to SPT.
(RT - SPT) [oc]
+2
+1
0
-1
-2
-3
ON
OFF
ON
OFF
H/M/L
OFF
L
ON
OFF
Note 1 Note 2
COMP
(WVL)
HE1
HE2
IFAN
ON
OFF
RV
Page 83
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Revision Y05-01Service Manual - WMZ
12.6.5 Heating, RC or SH Group with Autofan
Mode: Heat, Auto (at heating)
Temp: Selected desired temperature
Fan: Auto
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level by controlling COMP, IFAN and OFAN.
(RT - SPT) [oc]
+2
+1
0
-1
-2
-3
ON
OFF
ON
OFF
H
OFF
L
M
ON
OFF
Note 1 Note 2
COMP
(WVL)
HE1
HE2
IFAN
RV
ON
OFF
Page 84
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Revision Y05-01 Service Manual - WMZ
12.6.6 OFAN operation is controlled by the graph below when
1. (RAT ≥ SPT – 2oc), AND
2. (ICT ≥ 45
o
c), AND
3. (COMP is ON)
Otherwise, OFAN runs together with COMP.
OCT [oc]
+3
+2
+1
0
-1
OFAN
ON
OFF
Page 85
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Revision Y05-01Service Manual - WMZ
12.7 Automatic Cooling or Heating
12.7.1 Automatic Cooling or Heating - General
• Switching-temperature between Cooling and Heating is SPT ± 3oc.
• Autofan in Automatic Cooling and Heating Mode will activate “Cooling
with Autofan Mode” and “Heating with Autofan Mode” respectively.
• When the Auto Mode is started with SPT +/-0
o
c, the unit will not select
Auto Heat or Auto Cool mode immediately. Instead, the unit will be in
a temporary Fan Mode with IFAN operating at low speed.
The proper Auto Heat mode or Auto Cool will be started whenever the RT
reaches SPT-1
o
c or SPT+1oc respectively.
• For RC & SH units, Mode change between Auto Heat & Auto Cool
Modes is possible only after the COMP has been OFF during the
last T minutes.
Mode Change time, T
Auto Cool to Auto Heat 3 min
Auto Heat to Auto Cool 4 min
• When unit is changed form Cool/Dry mode to Auto Mode, the unit
will continue to operate at (Auto) Cool Mode until the conditions for
switching from Auto Cool to Auto Heat are satisfied.
Similarly, when unit is changed from Heat Mode to Auto Mode, the
unit will continue to operate at (Auto) Heat Mode until the conditions
for switching from Auto Heat to Auto Cool are satisfied.
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12.7.2 Auto Cooling or Heating, RC or SH Groups
Mode: Auto
Temp: Selected desired temperature
Fan: Any
Timer: Any
I Feel: On or Off
Control function
Maintains room temp at desired level by selecting between cooling and heating modes.
(RT - SPT) [oc]
+3
+2
+1
0
-1
-2
-3
ON
OFF
ON
OFF
H/M/L/OFF
L/OFF
ON
OFF
ON
OFF
COMP
& OFAN
HE1
HE2
IFAN
RV
H/M/L/OFF
L/OFF
USER FAN SPEED H/M/L/OFF
L/OFF
Auto Cool Mode Auto Heat Mode
> 4 min > 3 min
> 3 min > 2 min
(3) (3)
(4)
(4)
(5)
Auto Heat Mode
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CONTROL SYSTEM
Revision Y05-01Service Manual - WMZ
12.8 Dry Mode
12.8.1 Dry, ST or RC group
Mode: Dry
Temp: Selected desired temp
Fan: Low (automatically selected by software)
Timer: Any
I FEEL: Any
Control function
Reduce room humidity with minimum temp. fluctuations by operating in Cool Mode with
low speed IFAN.
Notes :
• When Dry is ON, the COMP is forced OFF for 3.5 min (longer than the
3 min Min COMP-Off time) after every 15 min of continuous COMP
operation.
• When Dry is OFF, the COMP is forced ON for 6 min (longer than the 3
min Min COMP-On time) after every 15 min of continuous COMP OFF
time.
• When Dry is changed from ON to OFF or vice versa, the limits
mentioned in (1) & (2) are ignored. The COMP operation is only
controlled by the 3 min Min OFF time and 1 min Min ON time.
• In Dry Mode, IFAN is LOW when COMP is ON, and is OFF when
COMP is OFF.
DRY
(RT - SPT) [oc]
+2
+1
0
-1
-2
ON
OFF
ON
OFF
LOW
OFF
DRY-ON
DRY-OFF
ON
OFF
Time [min]
10
20
30
40 50
Max 15 minutes
3.5
min
Note1
6 min
Note 2
COMP
& OFAN
HE1
& HE2
IFAN
RV
Max 15 minutes
5 minutes COMP
ON time
Page 88
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CONTROL SYSTEM
Revision Y05-01 Service Manual - WMZ
12.9 Protection
12.9.1 Cooling Mode Protections
Indoor Coil Defrost
Mode: Cooling, Dry, Auto
Temp: Selected desired temp.
Fan: Any
Timer: Any
I Feel: On or Off
Control Function
Protect the indoor coil from ice formation at low ambient temperature.
t1 = 5 min minimum for each COMP starting
t2 = OFAN cycling (alternate between ON and OFF every 30 sec) for 20 min
maximum
t3 = COMP and OFAN stop for 10 min minimum
Notes:
• When J7 is closed (connected), OFAN cycling is cancelled and the
set temperature for COMP & OFAN cut-out and cut-in are changed.
COMP & OFAN are forced OFF when ICT =< -6
o
c, and are kept OFF
until ICT > 14
o
c.
• For WAX model, the defrost processes is simpler. When J7 is open,
COMP & OFAN are forced OFF when ICT =< -1
o
c, and are kept OFF
until ICT > 5
o
c. When J7 is closed, the WAX defrosting process is the
same as that of the other models (R.H.S. of the graph above). In both
cases, the ICT checking in t2 and t3 are not applied.
ICT [oc]
+2
ON
OFF
ON
OFF
t1 t2 t3
COMP
OFAN
+1
+5
+14
0
-1
-6
ON
OFF
IFAN
J7 OPEN J7 CLOSED
t1 t1
Page 89
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CONTROL SYSTEM
Revision Y05-01Service Manual - WMZ
12.3.2 High Pressure Protection
Mode: (Auto) Cooling or Dry
Temp: Selected desired temp.
Fan: Any
Timer: Any
I Feel: On or Off
Control Function
To protect the COMP from the high pressure built-up in the outdoor coil during normal
cooling operation, by switching OFF the IFAN and COMP.
OCT [oc]
Any
OFF
Any
ON
Any
Blink
ON
COMP
OFAN
IFAN
OPER
LED
52
55
61
66
L
COMP is forced OFF
OFAN is forced ON
IFAN forced
to LOW
68
OFAN follow operation of
COMP
COMP is forced OFF
OFAN is forced ON
For all models except WAX & P2000 For WAX & P2000 models
Note:
• The ICT is also monitored during Cool and Dry mode, in case the RV control circuit
is faulty. Whenever ICT reaches 70
o
c, which indicates a high pressure in the indoor
coil, the COMP will be forced off automatically. The COMP can be turned on again only
after the ICT is under 70
o
c again and after the 3 min COMP ON delay time. The OPER
LED will not blink in this case.
Page 90
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CONTROL SYSTEM
Revision Y05-01 Service Manual - WMZ
12.9.3 Heating Mode Protections
Outdoor coil Deicing (excluding RH Group)
Mode: Heating, Auto (at heating)
Temp: Selected desired Temp
Fan: Any
Timer: Any
I FEEL: Any
Control function
Protects the Outdoor coil from ice formation by controlling COMP & RV operation.
Scope
This new deicer is designed to operate at extreme temp conditions. The deicing cycle
could be triggered from:
1. OCT temp and time between two consecutive deicing cycles.
2. Detection of ice forming by change of the OCT temp.
Both algorithms adjust the time between deicing cycles to optimize the A/C
performance. The algorithm will automatically increase the time between deicing cycles
and reduce the deicing cycle as needed.
The algorithm uses EEPROM data to operate.
Page 91
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CONTROL SYSTEM
Revision Y05-01Service Manual - WMZ
Deicing procedure
OCT [oc]
ON
OFF
ON
OFF
ON
L
ANY
COMP
OFAN
RV
IFAN
DST
(DDT)
0
12
OFF
HEs are forced ON
DOC
ANY
ON
HE
36s 36s
DT
30s
max 12 min.
Note 3
DI (note 1)
DI (note 2)
30s
3 min 3 min
IFAN
OFF
ANY
HE
OFF
ANY
all SH units
except WAX
RC or WAX units
HEs are forced OFF
IFAN is forced to Low Speed
BLINK
ON
OPER
LED
Notes :
• At the first COMP activation after SB or OFF, if (OCT < 0
o
c), then DI = 10
min, else DI = 40 min.
• In the following Deicing cycles, the time interval between two Deicing
cycles activation is between 30 to 80 min (refer to the flow chart).
• For RC group, HEs are forced OFF. IFAN operation is as in Heat
Mode, Sect 4.0.3.a, i.e. IFAN will be set to OFF when ICT<30
o
c.
For WAX, the IFAN is simply forced OFF.
• For SH group, HEs are forced ON and IFAN is forced to operate in Low
speed, regardless of the ICT and difference between RAT & SPT.
Page 92
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Revision Y05-01 Service Manual - WMZ
12.9.4 High pressure protection (excluding RH Group)
Mode: (Auto) Heating
Fan: Any
Timer: Any
I Feel: On or Off
Control Function
Protect the Compressor from high pressure by switching OFF the OFAN and COMP.
ICT [oc]
Any
Off
Any
Off
COMP
OFAN
52
55
61
66
COMP is forced OFF
67
OFAN is force
Off
COMP is forced OFF
For all models except WAX For WAX model
ON
BLINK
OPER
LED
Notes:
• IFAN, HE1 and HE2 will be activated according to the relevant
Heating Mode Sect.
• In case of any malfunction in the relay control circuit, the OCT is also
monitored during heating mode. Whenever OCT reaches 70
o
c, which indicates
a high pressure in the outdoor coil, the COMP will be forced off automatically.
The COMP can be turned on again only after the 3 min COMP ON delay and the
OCT is under 70
o
c. The OPER LED will not blink in this case.
Page 93
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Revision Y05-01Service Manual - WMZ
12.10 Timer
Mode: Any
Temp. Selected desired temp
Fan: Any
Timer: Timer On, Timer Off
I Feel: On or Off
Control function
• Starts or stops the unit operation after pre-set time. If RC-1 is used,
the timer setting will be (0.5 - 24 Hr) from the moment the timer is set.
The minimum resolution is 30 minutes.
If RC-2 or later version of remote controls is used, the timer
setting will be (0:00 - 23:50) real time with 10 minutes resolution.
• After power failure, all pre-set timers are cleared. The system is
forced to STBY mode and the Timer LED indicator is blinked to
indicate the situation. The LED keeps blinking until the timer settings
can be reloaded from a R/C message.
Note: If all timers are inactive, the system will not be forced
OFF after the power failure. The last OPER/STBY status will
be loaded from the EEP instead.
• When the A/C receives any valid message from a R/C, the current
ON/OFF timer settings will be replaced by the new timer settings in
the R/C message.
Note: The following timer related operations will not affect the
A/C operating mode (Heat/Cool/Auto/Dry/Fan) setting.
• Set ON/OFF timer
• Clear ON/OFF timer
• R/C ON Timer is time-up
• R/C OFF Timer is time-up
E.g. When a STBY A/C unit (with Cool Mode setting in its EEP) is
turned on by the ON-TIMER of a R/C with heat mode setting,
the A/C will start in Cool Mode.
Page 94
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Revision Y05-01 Service Manual - WMZ
12.11 Forced Operation
Forced operation allows units to start, stop and operate in Cooling or Heating in pre-set
temperature according to the following table:
Forced operation
mode
Pre-set Temp for :
WMZ, WMF,WNG models
Cooling 22°C
Heating 28°C
Note:
• While under the forced operation, the temperature compensation
schedule.
• The forced operation is activated when the mode button on the
Display Board is used to switch the unit to Cool or Heat mode.
• The IFAN is always set to Autofan Speed in forced operation.
Page 95
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Revision Y05-01Service Manual - WMZ
12.12 Sleep Mode
Mode: Any
Temp: Set – desired temperature selected
Fan: Any
Timer: Interact with Sleep Timer as described in sect 12.2
I Feel: On or Off
The Sleep mode is activated by using the sleep button on the R/C. In Sleep Mode,
the unit will automatically adjust the SPT to turn up/down the room temperature (RT)
gradually to provide maximum comfort to the user in sleep.
Sleep is treated as TIMER function. Therefore, the TIMER LED is activated similar to
TIMER function.
12.12.1 Adjustment in Sleep Mode
1. in cool, auto cool or dry modes, the SPT adjustment is positive (from 0 to +3oc).
2. In heat or auto heat modes, the SPT adjustment is negative (from 0 to -3
o
c).
3. In other modes, there is no SPT adjustment.
4. The SPT adjustment is cancelled when the Sleep mode is cancelled.
Note: If Off-timer is active, the unit may go to SB before or after 7 hours of
sleep operation.
SPT
Time [Hr]
485326
Start
Sleep
7
RT
SPT-1
SPT-2
SPT-3
SPT+2
SPT+1
SPT+3
1
7 Hours Sleep operation
for Normal Sleep Mode
Unit is turned to SB
after Sleep
Cool, Dry modes
Heat mode
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Revision Y05-01 Service Manual - WMZ
12.12.2 Time adjustment in Sleep Mode
The user can make use of the Off-Timer to extend the Sleep Time from 7 hours to 12
hour (max). The operation of the new “Extended Sleep Mode” is illustrated by the
graphs below.
Case 1 is the Standard Sleep Mode, which is the only sleep mode in previous version
of MCU. The A/C unit simply works for 7 hours, then goes to SB.
Case 2 is the new Extended Sleep Mode. If an active Off-Timer is set to turn off the
A/C between 7-12 hour, relative to the starting of Sleep, the Sleep time is extended.
And, instead of going to SB at the 7th hour, the A/C will work until reaching the Off-time.
Case 3 is an exception to case 2. The Sleep Mode will not be extended to the Off-Time
when the Off-Timer is preceded by an On-Timer, which is also between 7-12 hour.
Oper
Time [Hr]
48101226
Start
Sleep
7
Case 1 : Standard Sleep Mode
Condition : Off-timer is not set or is beyond 12 hour.
SB
Oper
Time [Hr]
48101226
Start
Sleep
7
Case 2 : Extended Sleep Mode
Condition : Off-timer is set at 7-12 hour.
SB
Off-timer
Oper
Time [Hr]
48101226
Start
Sleep
7
Case 3 : Exception to Case 2
Condition : Off-timer is set at 7-12 hour
On-timer is set at 7-12 hour and before Off-timer
SB
Off-timerOn-timer
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Revision Y05-01Service Manual - WMZ
12.13 Controller Self-Test Procedure
12.13.1 By Shorting Test Jumper J1
RC/ST TEST
MODEL
CONFIGURATION
TEST
STEP MOTOR TEST
FREQUENCY
TEST
LEDS OFF
LEDS ON TEST
AUTO RELAY
TEST
SHORT JUMPER
J1
(CONTROL PCB)
PRESS ON
POWER
BUTTON
PRESS ON
MODE BUTTON
INDOOR FAN
SPEED TEST
SELF-TEST FLOW CHART
Step 1
Step 2
Step 3
FOR CONTROLLER (VERSION 4V5 OR HIGHER)
COOL
HEAT
COMPRESSOR
OUTDOOR FAN
R.V.
LOW
MEDIUM
HIGH
TIMER
OPERATE
STANDBY
BUZZER TEST
(ONE BEEP SOUND)
REMOTE CONTROL
TO CPU COMUNICATION
(TWO BEEPS SOUNDS)
THERMISTOR ANALOG
VOLTAGE CHECKING
EEPROM MEMORY
TEST
END OF SELF
TEST
PRESS ON RESET
BUTTON
PRESS ON FAN
BUTTON ON THE
REMOTE CONTROL
PRESS ON MODE
BUTTON
PRESS ON MODE
BUTTON
Step 4
Step 5
Step 6
Step 7
Step 8
DISCONNECT
JUMPER
J1
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Revision Y05-01 Service Manual - WMZ
12.13.2 By Remote Control Settings:
a. 1: TURNING ON THE POWER.
Turn ON the power, make sure that the unit is in operation.
b. STEP 2 : ENABLE SELF-TEST MODE
• Use the remote control to send the first settings to display / indoor unit
HEAT mode, HIGH IFAN, set temperature to 16 ºC, no I-FEEL Sleep or
any other timer settings are needed.
• Cover the IR transmitter components in the remote control so that it will
not transmit the signals to the indoor unit display.
• Use the remote control to send the second settings to display / indoor unit
COOL mode, LOW IFAN, no I-FEEL Sleep or any other timer settings.
• Uncover the remote control IR transmitter and change the temperature
settings. If the display/indoor unit receive the settings properly the
following steps will start:
c. STEP 3: MODEL SETTING CONFIRMATION
• The STAND-BY and COOL LEDS will indicate the operation mode as
follows:
OPERATION MODE STAND-BY LED COOL LED
ST ON OFF
RC OFF OFF
SH OFF ON
RH ON ON
• Testing the Model configuration. Selected by the COMP, STAND-BY,
TIMER LEDS and FILTER will indicate the model configuration as follows
(the relevant line for this manual is highlighted):
MODEL COMP OPERATE LED TIMER LED FILTER LED
WNG ON OFF OFF OFF
WMZ ON ON OFF ON
WMN4 OFF OFF ON OFF
WMN2/WHX OFF ON OFF ON
WMN3 OFF ON ON ON
In this term the step motor will turn to HOME POSITION.
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d. STEP 4 : AUTO LED WALK TEST.
• All the LEDS will turn OFF.
• All the LEDS will turn ON for 1 second one by one in the following
sequence:
STAND-BY OPERATE TIMER FILTER COOL HEAT.
• In PRX all the LEDS will turn ON for 1 second one by one in the following
sequence : 18 °c 20 °c 22 °c 24 °c 26 °c 28 °c 30 °c
High IFAN Auto IFAN Med IFAN Low IFAN STAND-BY
TIMER FILTER COOL HEAT.
e. STEP 5: AUTO REALY WALK TEST:
• All relays will energize one by one in the following sequence:
COMPRESSOR OUTDOOR FANR. V. HEATER 1 HEATER 2
INDOOR WATER PUMP SWING or OUTDOOR WATER PUMP
INDOOR FAN: LOW MID HIGH.
• When the relay walk test is completed, the next test will start
automatically.
f. STEP 6: FREQUENCY TESTING:
• If the frequency measuring process fails the COOL LED will turn ON.
In order to move to the next step, press ON/OFF button on the remote
control.
g. STEP 7: INPUT TEST.
• The test purpose is to check the analog real time indicators (thermistors,
LEVEL and clock) according to the table below.
LED Indicator Condition for LED to be ON
STBY LED Room thermistor ≠ 25°c
OPER LED Indoor coil thermistor ≠ 25°c
TIMER LED Outdoor coil thermistor ≠ 25°c
FILTER LED Clock
COOL LED LEVEL 2&3
HEAT LED LEVEL 4
h. STEP 8: TIMING RESET TEST (WATCH DOG).
• The test purpose is to verify that the CPU rise time after power failure
is between 1 to 3 sec, test results are indicated on the LEDS : STANDBY,OPER, TIMER and FILTER turning ON one by one.
• The results of the test are coded as follows:
Pass condition:
1 sec - STAND-BY and OPER are turned ON
2 sec - STAND-BY, OPER and TIMER are turned ON
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Fail condition:
0 sec - STAND-BY is turned ON
3 sec - STAND-BY, OPER, TIMER and FILTER are turned ON
• When the timing reset test is completed, the next test will start
automatically.
i. STEP 9: MEMORY TEST (EEPROM)
• The test purpose is to check if the memory is functioning correctly. The test
result is reported by using the STAND-BY and FILTER LEDS:
LED Indicator Condition for LED to be ON
STAND-BY LED Test passed
FILTER LED Test failed
AT THIS POINT THE SELF-TEST IS COMPLETED.
In order to terminate Self-Test mode the User can change the unit setting from COOL
Mode, LOW FAN to COOL Mode, MED FAN or to wait without using the remote control
for 60 sec.
Values of Sensors Temperature VS. Voltage (DC)
Temp. (*C) Voltage (V) Temp. (*C) Voltage (V) Temp. (*C) Voltage (V) Temp. (*C) Voltage (V)
-20 4.554 2 3.744 24 2.555 46 1.487
-19 4.529 3 3.695 25 2.5 47 1.447
-18 4.502 4 3.646 26 2.445 48 1.409
-17 4.475 5 3.595 27 2.391 49 1.371
-16 4.446 6 3.544 28 2.338 50 1.334
-15 4.417 7 3.492 29 2.284 51 1.298
-14 4.386 8 3.439 30 2.232 52 1.263
-13 4.354 9 3.386 31 2.18 53 1.228
-12 4.322 10 3.332 32 2.128 54 1.195
-11 4.287 11 3.278 33 2.077 55 1.162
-10 4.252 12 3.223 34 2.027 56 1.13
9 4.216 13 3.168 35 1.978 57 1.099
-8 4.178 14 3.113 36 1.929 58 1.069
-7 4.14 15 3.058 37 1.881 59 1.04
-6 4.1 16 3.002 38 1.834 60 1.011
-5 4.059 17 2.946 39 1.798 61 0.983
-4 4.017 18 2.89 40 1.742 62 0.956
-3 3.974 19 2.833 41 1.698 63 0.929
-2 3.93 20 2.777 42 1.654 64 0.904
-1 3.885 21 2.722 43 1.611 65 0.879
0 3.839 22 2.666 44 1.569 66 0.854
1 3.792 23 2.61 45 1.527 67 0.831
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