Electra PXD 25 DCI User manual

Service Manual
DCI PXD Series
REFRIGERANT
R410A
HEAT PUMP
APRIL 2005
Indoor Units Outdoor Units
PXD 25 DCI ONG 25 DCI
PXD 35 DCI ONG 35 DCI
PXD 50 DCI ONG 50 DCI

A
LIST OF EFFECTIVE PAGES
Revision Y05-01 Service Manual − PXD DCI
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 ........ April 2005
Total number of pages in this publication is 86 consisting of the following:
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Title....................... 0
A ........................... 0
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2-1 - 2-3................ 0
3-1 ........................ 0
4-1 - 4-2................ 0
5-1 - 5-14.............. 0
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10-1-10-19............ 1
11-1-11-8............... 0
12-1-12-8.............. 0
13-1 ...................... 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

i
TABLE OF CONTENTS
Revision Y05-01Service Manual - PXD DCI
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. ELECTRICAL DATA..............................................................................................6-1
7. WIRING DIAGRAMS .............................................................................................7-1
8. REFRIGERATION DIAGRAMS.............................................................................8-1
9. TUBING CONNECTIONS......................................................................................9-1
10. CONTROL SYSTEM .............................................................................................10-1
11. TROUBLESHOOTING ..........................................................................................11-1
12. EXPLODED VIEWS AND SPARE PARTS LISTS.................................................12-1
13. APPENDIX A .........................................................................................................13-1

1-1
INTRODUCTION
Revision Y05-01Service Manual - PXD DCI
1. INTRODUCTION
1.1 General
The PXD split ceiling mounted range comprise the following RC (heat pump) models:
PXD 25 DCI,
PXD 35 DCI,
PXD 50 DCI
1.2 Main Features
The PXD series benefits from the most advanced technological innovations, namely:
● DC Inverter Technology
● R410A
● High COP.
● Extended temp’ operating range
● Low indoor and outdoor noise levels.
● Microprocessor control.
● Infrared remote control.
● Easy access to the interconnecting tubing and wiring connections, main control
panel can slide out for service.
● Automatic treated air sweep.
● Networking Connectivity.
● Self diagnostics.
● Advanced diagnostics PC softwear “m2ll”
● Pre charged units till the max allowed tubing length.
● Easy installation and service.
1.3 Indoor Unit
The indoor unit is a floor/ ceiling mounted, and can be easily fitted to many types of
residential and commercials applications.
It includes:
● Coil with hydrophilic aluminum fins.
● Motorized flaps (two step motors)
● Advanced electronic control box assembly (DCI storm)
● Mounting plate

1-2
INTRODUCTION
Revision Y05-01 Service Manual - PXD DCI
1.4 Filtration
● Easily accessible, and re-usable pre-filters (mesh)
1.5 Control
The microprocessor indoor controller, and an infrared remote control, supplied as
standard, providing complete operating function and programming. For further details
please refer to the Operation Manual, Appendix A.
1.6 Outdoor Unit
The PXD 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 :
● Compressor mounted in a soundproofed compartment :
Rotary – for PXD25 DCI and PXD35 DCI.
Scroll – for PXD50 DCI.
It includes:
● Axial fan.
● Outdoor coil with hydrophilic louver fins for RC units.
● Outlet air fan grill.
● Service valves” flare” type connection.
● Interconnecting wiring terminal block.
● Advanced DC inverter controller.
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 Inbox Documentation
Each unit is supplied with its own installation and operation manuals.

1-3
INTRODUCTION
Revision Y05-01Service Manual - PXD DCI
1.9 Matching Table
1.9.1 R410A
OUTDOOR UNITS
INDOOR UNITS
MODEL REFRIGER. WNG25 WNG35 WNG50 K25 K35 K50 PXD25 PXD35 PXD50
ONG25 DCI R410A √ √ √
ONG35 DCI R410A √ √ √
ONG50 DCI R410A √ √ √
The above table lists outdoor units and PXD DCI indoor units which can be matched together.
In addition the listed outdoor units can be matched with other types of indoor units such as
cassettes and wall mounted.
For further information please refer to the relevant Service Manual.

2-1
PRODUCT DATA SHEET
Revision Y05-01Service Manual - PXD DCI
2. PRODUCT DATA SHEET
2.1 PXD 25 DCI R410A
Model Indoor Unit PXD 25 DCI
Model Outdoor Unit ONG-25 DCI
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Btu/hr 8530(4780~12280) 10920(5120~15350)
Capacity (1)
kW 2.5(1.4-3.6) 3.2(1.5~4.5)
Power input (1) kW 0.62(0.42-1.1) 0.93(0.4~1.6)
EER (Cooling) or COP(Heating) (1) W/W 4.03 3.41
Energy efficiency class A B
Power supply V/Ph/Hz 220-240V/Single/50Hz
Rated current A 2.7 4.1
Starting current A 10.5
Circuit breaker rating A 35
Fan type & quantity Centrifugal x 2
Fan speeds H/M/L RPM 760/670/500
Air flow (2) H/M/L m3/hr 400/350/300
External static pressure Min-Max Pa 0
Sound power level (3) H/M/L dB(A) 50/49/47
Sound pressure level(4) H/M/L dB(A) 39/37/35
Moisture removal l/hr 1
Condenstate drain tube I.D mm 16
Dimensions WxDxH mm 820*190*630
Weight kg 21
Package dimensions WxDxH mm 890*280*710
Package weight kg 25
Units per pallet units 14units per pallet
INDOOR
Units stacking units 7 levels
Refrigerant control EEV
Compressor type,model Single Rotary,DC Inverter,Panasonic 5RS102XAB
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 830
Air flow H/L m3/hr 1780
Sound power level H/L dB(A) 61
Sound pressure level(4) H/L dB(A) 51
Dimensions WxDxH mm 795*290*610
Weight kg 38
Package dimensions WxDxH mm 945*395*655
Packaged weight kg 42
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.10kg/7.5m
Additional charge per 1 meter g/m No Need
Liquid line In.(mm) 1/4"(6.35)
Suction line In.(mm) 3/8"(9.53)
Max.tubing length m. Max.20
OUTDOOR
Connections between units
Max.height difference m. Max.10
Operation control type Remote control
Heating elements (Option) kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(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.

2-2
PRODUCT DATA SHEET
Revision Y05-01 Service Manual - PXD DCI
2.2 PXD 35 DCI R410A
Model Indoor Unit PXD 35 DCI
Model Outdoor Unit ONG-DCI 35
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Btu/hr 11940(5120~15010) 14330(5120~17060)
Capacity (1)
kW 3.5(1.5-4.4) 4.2(1.5~5.0)
Power input (1) kW 0.98(0.46-1.3) 1.31(0.35~1.58)
EER (Cooling) or COP(Heating) (1) W/W 3.57 3.21
Energy efficiency class A C
Power supply V/Ph/Hz 220-240V/Single/50Hz
Rated current A 4.3 5.7
Starting current A 10.5
Circuit breaker rating A 35
Fan type & quantity Centrifugal x 2
Fan speeds H/M/L RPM 830/760/500
Air flow (2) H/M/L m3/hr 450/400/300
External static pressure Min-Max Pa 0
Sound power level (3) H/M/L dB(A) 56/53/51
Sound pressure level(4) H/M/L dB(A) 45/41/38
Moisture removal l/hr 1.5
Condenstate drain tube I.D mm 16
Dimensions WxDxH mm 820*190*630
Weight kg 22
Package dimensions WxDxH mm 890*280*710
Package weight kg 26
Units per pallet units 14units per pallet
INDOOR
Units stacking units 7 levels
Refrigerant control EEV
Compressor type,model Single Rotary,DC Inverter,Panasonic 5RS102XAB
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 830
Air flow H/L m3/hr 1780
Sound power level H/L dB(A) 62
Sound pressure level(4) H/L dB(A) 52
Dimensions WxDxH mm 795*290*610
Weight kg 38.5
Package dimensions WxDxH mm 945*395*655
Packaged weight kg 42.5
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.20kg/7.5m
Additional charge per 1 meter g/m No Need
Liquid line In.(mm) 1/4"(6.35)
Suction line In.(mm) 3/8"(9.53)
Max.tubing length m. Max.20
OUTDOOR
Connections
between units
Max.height difference m. Max.10
Operation control type Remote control
Heating elements (Option) kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(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.

2-3
PRODUCT DATA SHEET
Revision Y05-01Service Manual - PXD DCI
Model Indoor Unit PXD 50 DCI
Model Outdoor Unit ONG-DCI 50
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Btu/hr 17000(5120-20460) 20460(5120-24550)
Capacity (1)
kW 5.0(1.5-6.0) 5.8(1.5~7.2)
Power input (1) kW 1.65(0.5-2.1) 1.69(0.45-2.1)
EER (Cooling) or COP(Heating) (1) W/W 3.03 3.43
Energy efficiency class B B
Power supply V/Ph/Hz 220-240V/Single/50Hz
Rated current A 7.2 7.7
Starting current A 10.5
Circuit breaker rating A 35
Fan type & quantity Centrifugal x 2
Fan speeds H/M/L RPM 1050/950/700
Air flow (2) H/M/L m3/hr 870/750/600
External static pressure Min-Max Pa 0
Sound power level(3) H/M/L dB(A) 65/60/56
Sound pressure level(4) H/M/L dB(A) 51/48/45
Moisture removal l/hr 2
Condenstate drain tube I.D mm 16
Dimensions WxDxH mm 1200*190*630
Weight kg 30
Package dimensions WxDxH mm 1270*280*710
Package weight kg 35
Units per pallet units 7units per pallet
INDOOR
Units stacking units 7 levels
Refrigerant control EEV
Compressor type,model Single Rotary,DCI, Panasonic 5CS130XCC03
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) 63
Sound pressure level(4) H/L dB(A) 53
Dimensions WxDxH mm 795*290*610
Weight kg 39
Package dimensions WxDxH mm 945*395*655
Packaged weight kg 43
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.50kg/7.5m
Additional charge per 1 meter g/m No Need
Liquid line In.(mm) 1/4"(6.35)
Suction line In.(mm) 1/2"(12.7)
Max.tubing length m. Max.30
OUTDOOR
Connections between
units
Max.height difference m. Max.10
Operation control type Remote control
Heating elements (Option) kW
Others
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511.
(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.
Scroll

3-1
RATING CONDITIONS
Revision Y05-01Service Manual - PXD DCI
3. RATING CONDITIONS
Standard conditions in accordance with ISO 5151, ISO 13253 (for ducted units)
and EN 14511.
Cooling:
Indoor: 27oC DB 19oC WB
Outdoor: 35 oC DB
Heating:
Indoor: 20oC DB
Outdoor: 7oC DB 6oC WB
3.1 Operating Limits
R410A
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 -15oC DB -16oC WB
Voltage 1PH 198 – 264 V
3PH N/A

4-1
OUTLINE DIMENSIONS
Revision Y05-01Service Manual - PXD DCI
4. OUTLINE DIMENSIONS
4.1 Indoor Unit: PXD 25, 35, DCI
4.2 Indoor Unit: PXD 50 DCI

4-2
OUTLINE DIMENSIONS
Revision Y05-01 Service Manual - PXD DCI
4.3 Outdoor Unit: ONG 25, 35, 50 DCI


5-1
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - PXD DCI
5. PERFORMANCE DATA
5,1 PXD25 DCI
5.1.1 Cooling Capacity (kW) – Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [oC]
OU COIL
ENTERING AIR DB
TEMPERATURE
[oC]
DATA 22/15 24/17 27/19 29/21 32/23
-10 - 20
(protection range)
TC 80 - 110 % of nominal
SC 80 - 105 % of nominal
PI 25 - 50 % of nominal
25
TC 2.42 2.57 2.73 2.89 3.05
SC 2.09 2.13 2.18 2.22 2.26
PI 0.49 0.50 0.51 0.52 0.52
30
TC 2.30 2.46 2.62 2.77 2.93
SC 2.04 2.08 2.12 2.17 2.21
PI 0.54 0.55 0.56 0.57 0.58
35
TC 2.18 2.34 2.50 2.66 2.82
SC 1.98 2.03 2.07 2.11 2.16
PI 0.60 0.61 0.62 0.63 0.64
40
TC 2.07 2.23 2.38 2.54 2.70
SC 1.93 1.97 2.02 2.06 2.10
PI 0.66 0.67 0.68 0.69 0.70
46
TC 1.93 2.09 2.24 2.40 2.56
SC 1.87 1.91 1.95 2.00 2.04
PI 0.73 0.74 0.75 0.75 0.76
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
5.1.2 Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
20 25 30 35 40 45
Outdoor Temperature [ºC]
Capacity Rati
o

5-2
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - PXD DCI
5.1.3 Heating Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [oC]
OU COIL
ENTERING
AIR DB/WB
TEMPERATURE
[oC]
DATA 15 20 25
-15/-16 TC 2.04 1.89 1.75
PI 0.56 0.61 0.67
-10/-12 TC 2.27 2.12 1.98
PI 0.67 0.73 0.79
-7/-8 TC 2.44 2.30 2.16
PI 0.76 0.82 0.87
-1/-2 TC 2.53 2.38 2.24
PI 0.80 0.86 0.92
2/1 TC 2.58 2.44 2.30
PI 0.83 0.89 0.94
7/6 TC 3.34 3.20 3.06
PI 0.87 0.93 0.99
10/9 TC 3.53 3.38 3.24
PI 0.93 0.98 1.04
15/12 TC 3.71 3.57 3.43
PI 0.98 1.03 1.09
15-24 TC 85 - 105 % of nominal
(Protection Range) PI 80 - 120 % of nominal
LEGEND
TC – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
5.1.4 Capacity Correction Factors
Heating Capacity Ratio Vs. Outdoor Temperature
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
-15 -10 -5 0 5 10 15
Outdoor WB Temperature [deg C]
Capacity Ration

5-3
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - PXD DCI
5.2 PXD35 DCI
5.2.1 Cooling Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [oC]
OU COIL
ENTERING AIR DB
TEMPERATURE [oC]
DATA 22/15 24/17 27/19 29/21 32/23
-10 - 20
(protection range)
TC 80 - 110 % of nominal
SC 80 - 105 % of nominal
PI 25 - 50 % of nominal
25 TC 3.38 3.60 3.83 4.05 4.27
SC 2.65 2.70 2.75 2.81 2.86
PI 0.77 0.78 0.80 0.81 0.83
30
TC 3.22 3.44 3.66 3.88 4.11
SC 2.58 2.63 2.69 2.74 2.79
PI 0.86 0.88 0.89 0.90 0.92
35
TC 3.06 3.28 3.50 3.72 3.94
SC 2.51 2.57 2.62 2.67 2.73
PI 0.95 0.97 0.98 0.99 1.01
40 TC 2.89 3.12 3.34 3.56 3.78
SC 2.45 2.50 2.55 2.61 2.66
PI 1.04 1.06 1.07 1.08 1.10
46 TC 2.70 2.92 3.14 3.36 3.58
SC 2.37 2.42 2.47 2.53 2.58
PI 1.15 1.16 1.18 1.19 1.21
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
5.2.2 Capacity Correction Factor
Cooling Capacity Ratio Vs. Outdoor Temperature
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
20 25 30 35 40 45
Outdoor Temperature [ºC]
Capacity Rati
o

5-4
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - PXD DCI
5.2.3 Heating Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [oC]
OU COIL
ENTERING
AIR DB/WB
TEMPERATURE
[oC]
DATA 15 20 25
-15/-16 TC 2.67 2.49 2.30
PI 0.79 0.87 0.95
-10/-12 TC 2.98 2.79 2.60
PI 0.95 1.03 1.11
-7/-8 TC 3.20 3.02 2.83
PI 1.07 1.15 1.23
-1/-2 TC 3.32 3.13 2.94
PI 1.13 1.21 1.29
2/1 TC 3.39 3.20 3.02
PI 1.17 1.25 1.33
7/6 TC 4.39 4.20 4.01
PI 1.23 1.31 1.39
10/9 TC 4.63 4.44 4.26
PI 1.30 1.38 1.46
15/12 TC 4.87 4.68 4.50
PI 1.38 1.46 1.54
15-24 TC 85 - 105 % of nominal
(Protection Range) PI 80 - 120 % of nominal
LEGEND
TC – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
5.2.4 Capacity Correction Factors
Heating Capacity Ratio Vs. Outdoor Temperature
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
-15 -10 -5 0 5 10 15
Outdoor WB Temperature [deg C]
Capacity Ration

5-5
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - PXD DCI
5.3 PXD50 DCI
5.3.1 Cooling Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [oC]
OU COIL
ENTERING AIR DB
TEMPERATURE [oC]
DATA 22/15 24/17 27/19 29/21 32/23
-10 - 20
(protection range)
TC 80 - 110 % of nominal
SC 80 - 105 % of nominal
PI 25 - 50 % of nominal
25 TC 4.93 5.22 5.51 5.80 6.09
SC 3.35 3.40 3.45 3.50 3.55
PI 1.25 1.28 1.30 1.33 1.36
30
TC 4.67 4.96 5.25 5.54 5.83
SC 3.22 3.27 3.32 3.37 3.42
PI 1.42 1.45 1.48 1.50 1.53
35
TC 4.42 4.71 5.00 5.29 5.58
SC 3.09 3.14 3.19 3.24 3.29
PI 1.59 1.62 1.65 1.68 1.71
40 TC 4.17 4.46 4.75 5.04 5.33
SC 2.96 3.01 3.06 3.11 3.16
PI 1.77 1.80 1.82 1.85 1.88
46 TC 3.86 4.15 4.44 4.73 5.02
SC 2.80 2.85 2.90 2.95 3.00
PI 1.98 2.00 2.03 2.06 2.09
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
5.3.2 Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
20 25 30 35 40 45
Outdoor Temperature [ºC]
Capacity Rati
o

5-6
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - PXD DCI
5.3.3 Heating Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [oC]
OU COIL
ENTERING
AIR DB/WB
TEMPERATURE
[oC]
DATA 15 20 25
-15/-16 TC 2.64 2.26 1.88
PI 1.18 1.27 1.35
-10/-12 TC 3.48 3.10 2.72
PI 1.34 1.42 1.50
-7/-8 TC 4.12 3.74 3.36
PI 1.45 1.54 1.62
-1/-2 TC 4.43 4.05 3.67
PI 1.51 1.59 1.68
2/1 TC 4.65 4.27 3.89
PI 1.55 1.63 1.72
7/6 TC 6.18 5.80 5.42
PI 1.61 1.69 1.77
10/9 TC 6.50 6.12 5.74
PI 1.64 1.72 1.81
15/12 TC 6.82 6.44 6.06
PI 1.67 1.75 1.84
15-24 TC 85 - 105 % of nominal
(Protection Range) PI 80 - 120 % of nominal
LEGEND
TC – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
5.3.4 Capacity Correction Factors
Heating Capacity Ratio Vs. Outdoor Temperature
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
-15 -10 -5 0 5 10 15
Outdoor WB Temperature [deg C]
Capacity Ration

5-7
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01Service Manual - PXD DCI
5.4 Capacity Correction Factor Due to Tubing Length
5.4.1 PXD 25/35 DCI :Cooling
5.4.2 Heating
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
1.01
3 4 5 6 7 8 9 1011121314151617181920
Tubing Length [m]
Capacity Ratio
0.90
0.92
0.94
0.96
0.98
1.00
1.02
3 4 5 6 7 8 9 1011121314151617181920
Tubing Length [m]
Capacity Ratio

5-8
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-01 Service Manual - PXD DCI
5.4.3 PXD 50 DCI :Cooling
5.4.4 Heating
0.89
0.91
0.93
0.95
0.97
0.99
1.01
4 6 8 1012141618202224262830
Tubing length(m)
Capacity ratio
0.84
0.86
0.88
0.90
0.92
0.94
0.96
0.98
1.00
1.02
4 6 8 1012141618202224262830
Tubing Length(m)
Capacity ratio