Electra DELTA 22 User manual

Service Manual
DC Inverter Delta Series
REFRIGERANT
R410A HEAT PUMP
JUNY 2005
Indoor Units Outdoor Units
Delta 22 DCR 22
Delta 25 DCR 25
Delta 35 DCR 35
Delta 50 DCR 50

A
LIST OF EFFECTIVE PAGES
Revision Y05-02 Service Manual - Delta 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 ........ 15 March 2005
Total number of pages in this publication is 79 consisting of the following:
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Title....................... 1
A ........................... 1
i............................. 0
1-1 - 1-3................ 1
2-1 - 2-4................ 1
3-1 ........................ 0
4-1 - 4-3................ 1
5-1 - 5-20.............. 1
6-1 - 6-4................ 1
7-1 ........................ 1
8-1 ........................ 1
9-1 ........................ 1
10-1 ...................... 1
11-1-11-14............. 0
12-1-12-7.............. 2
13-1-13-11 ............ 1
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

i
TABLE OF CONTENTS
Revision Y05-02Service Manual - Delta 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. SOUND LEVEL CHARACTERISTICS ..................................................................6-1
7. ELECTRICAL DATA..............................................................................................7-1
8. WIRING DIAGRAMS .............................................................................................8-1
9. REFRIGERATION DIAGRAMS.............................................................................9-1
10. TUBING CONNECTIONS......................................................................................10-1
11. CONTROL SYSTEM .............................................................................................11-1
12. TROUBLESHOOTING ..........................................................................................12-1
13. EXPLODED VIEWS AND SPARE PARTS LISTS.................................................13-1
14. APPENDIX A .........................................................................................................14-1

1-1
INTRODUCTION
Revision Y05-01Service Manual - Delta DCI
1. INTRODUCTION
1.1 General
The new Delta DC Inverter split wall mounted series comprise RC (heat pump)
models, as follows:
●Delta 22
●Delta 25
●Delta 35
●Delta 50
The indoor Delta units are available as LED display types only, featuring esthetic
design, compact dimensions, and low noise operation.
1.2 Main Features
The Delta series benefits from the most advanced innovations, namely:
●DC Inverter Technology
● R410A
● Microprocessor control.
● Infrared remote control with liquid crystal display.
● Indoor large diameter cross flow fan, allowing low noise level operation.
● Bended indoor coil with treated aluminum fins and coating for improved
efficiency.
● High COP.
● Pre-Charged units up to the max allowing tubing distance.
● Heating operation at outdoor temperature down to -15ºC
● Advanced test and diagnostics mode.
● M2L diagnostics softwear cable port (for PC)
● Easy access to the interconnecting tubing and wiring connections, so that
during installation removing the front grill or casing is not necessary.
● Refrigerant pipes can be connected to the indoor unit from 5 different optional
directions.
● Automatic treated air sweep.
● Easy installation and service.

1-2
INTRODUCTION
Revision Y05-01 Service Manual - Delta DCI
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.
●A large-diameter tangential fan.
● Bended coil with treated aluminum fins.
● Motorized flaps.
● Variable Speed motor (PG).
● Advanced electronic control box assembly.
● Interconnecting wiring terminal block.
● Mounting plate.
1.4 Filtration
The Delta series presents several types of air filters:
● Easily accessible, and re-usable pre-filters (mesh)
● Pre-charged electrostatic filter (optional)
● Active carbon filter (optional)
1.5 Control
The microprocessor indoor controller, and an infrared remote control, supplied as
standard, provide complete operating function and programming. For further details
please refer to the Operation Manual, Appendix A.
1.6 Outdoor Unit
The Delta 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 :
● Single DC Rotary Compressor mounted in a soundproofed compartment
● Axial fan.
● Outdoor coil with hydrophilic louver fins.
● Outlet air fan grill.
● Outdoor advanced controller.
● 2 fan speed AC motor

1-3
INTRODUCTION
Revision Y05-01Service Manual - Delta DCI
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,
1.9 Matching Table
OUTDOOR UNITS
INDOOR UNITS
MODEL REFR” Delta 25 Delta 35
DCR 25 R410A √
DCR 35 R410A √

2-1
PRODUCT DATA SHEET
Revision Y05-01Service Manual - Delta DCI
2.1 R410A
Model Indoor Unit DELTA 22 DCI
Model Outdoor Unit DCR 22 R410A
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Capacity (1) Btu/hr 7500(4440-8870) 8530(4440-10580)
kW 2.2(1.3-2.6) 2.5(1.3-3.1)
Power input (1) kW 0.66 0.73
EER (Cooling) or COP(Heating) (1) W/W 3.33 3.42
Energy efficiency class A B
Power supply V/Ph/Hz 220-240V/Single/50Hz
Rated current A 3.0 3.3
Starting current A 10.5
Circuit breaker rating A 10
INDOOR
Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1100/950/800
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) 49/46/43
Sound pressure level (4) H/M/L dB(A) 36/33/30
Moisture removal l/hr 1
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 680x250x185
Weight kg 7
Package dimensions WxHxD mm 740x265x320
Packaged weight kg 10
Units per pallet units 36 units per pallet
Stacking height units 9 levels
OUTDOOR
Refrigerant control EEV
Compressor type, model Rotary, Panasonic 5RS092XDJ01
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 770
Air flow H/L m3/hr 1400
Sound power level H/L dB(A) 64
Sound pressure level (4) H/L dB(A) 54
Dimensions WxHxD mm 760x245x545
Weight kg 35
Package dimensions WxHxD mm 880x310x610
Packaged weight kg 38
Units per pallet Units 12 units per pallet
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 0.7kg/7.5m
Additional charge per 1 meter g/m No need
Connections between
units
Liquid line In.(mm) 1/4”(6.35)
Suction line In.(mm) 3/8”(9.53)
Max.tubing length m. Max.15
Max.height difference m. Max. 10
Operation control type Remote control
Heating elements 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. PRODUCT DATA SHEET

2-2
PRODUCT DATA SHEET
Revision Y05-01 Service Manual - Delta DCI
Model Indoor Unit DELTA 25
Model Outdoor Unit DCR 25
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Capacity (1) Btu/hr 8530(4440-10240) 9550(4774-11940)
kW 2.5(1.3-3.0) 2.8(1.4-3.5)
Power input (1) kW 0.75 0.82
EER (Cooling) or COP(Heating) (1) W/W 3.33 3.41
Energy efficiency class A B
Power supply V/Ph/Hz 220-240V/Single/50Hz
Rated current A 3.2 3.6
Starting current A 10
Circuit breaker rating A 12
INDOOR
Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1200/1050/850
Air flow (2) H/M/L m3/hr 420/350/270
External static pressure Min-Max Pa 0
Sound power level (3) H/M/L dB(A) 52/48/45
Sound pressure level(4) H/M/L dB(A) 39/35/32
Moisture removal l/hr 1
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 680x250x185
Weight kg 7
Package dimensions WxHxD mm 740x265x320
Packaged weight kg 10
Units per pallet units 36 units per pallet
Stacking height units 9 levels
OUTDOOR
Refrigerant control EEV
Compressor type, model Rotary, Panasonic 5RS092XDJ01
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 760
Air flow H/L m3/hr 1390
Sound power level H/L dB(A) 64
Sound pressure level(4) H/L dB(A) 54
Dimensions WxHxD mm 760x245x545
Weight kg 36
Package dimensions WxHxD mm 880x310x610
Packaged weight kg 39
Units per pallet Units 12 units per pallet
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 0.85kg/7.5m
Additional charge per 1 meter g/m No need
Connections between
units
Liquid line In.(mm) 1/4”(6.35)
Suction line In.(mm) 3/8”(9.53)
Max.tubing length m. Max.15
Max.height
difference m. Max. 10
Operation control type Remote control
Heating elements 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 - Delta DCI
Model Indoor Unit DELTA 35
Model Outdoor Unit DCR 35
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Capacity (1) Btu/hr 11940(4440-13990) 12280(5115-13990)
kW 3.5(1.3-4.1) 3.6(1.65-4.1)
Power input (1) kW 1.03 1.05
EER (Cooling) or COP(Heating) (1) W/W 3.39 3.43
Energy efficiency class A B
Power supply V/Ph/Hz 220-240V/Single/50Hz
Rated current A 4.9 4.8
Starting current A 10.5
Circuit breaker rating A 15
INDOOR
Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1200/1000/850
Air flow (2) H/M/L m3/hr 550/450/350
External static pressure Min-Max Pa 0
Sound power level (3) H/M/L dB(A) 56/46/42
Sound pressure level(4) H/M/L dB(A) 39/33/29
Moisture removal l/hr 1.5
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 840x250x185
Weight kg 8
Package dimensions WxHxD mm 930x265x320
Packaged weight kg 11
Units per pallet units 36 units per pallet
Stacking height units 9 levels
OUTDOOR
Refrigerant control EEV
Compressor type, model Rotary, Panasonic 5RS102XAB
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 760
Air flow H/L m3/hr 1390
Sound power level H/L dB(A) 65
Sound pressure level(4) H/L dB(A) 55
Dimensions WxHxD mm 760x245x545
Weight kg 37
Package dimensions WxHxD mm 880x310x610
Packaged weight kg 40
Units per pallet Units 12 units per pallet
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.0kg/7.5m
Additional charge per 1 meter g/m No need
Connections between units
Liquid line In.(mm) 1/4”(6.35)
Suction line In.(mm) 3/8”(9.53)
Max.tubing length m. Max.15
Max.height
difference m. Max. 10
Operation control type Remote control
Heating elements kW No
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.

2-4
PRODUCT DATA SHEET
Revision Y05-01 Service Manual - Delta DCI
Model Indoor Unit DELTA 50 DCI
Model Outdoor Unit DCR 50 R410A
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Btu/hr 17060(4780-18770) 18080(5460-20130)
Capacity (1)
kW 5.0(1.4-5.5) 5.3(1.6-5.9)
Power input (1) kW 1.56 1.55
EER (Cooling) or COP(Heating) (1) W/W 3.21 3.42
Energy efficiency class A B
Power supply V/Ph/Hz 220-240V/Single/50Hz
Rated current A 7.0 6.9
Starting current A 10.5
Circuit breaker rating A 20
Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1230/1100/900
Air flow (2) H/M/L m3/hr 720/620/480
External static pressure Min-Max Pa 0
Sound power level (3) H/M/L dB(A) 56/54/47
Sound pressure level (4) H/M/L dB(A) 44/41/34
Moisture removal l/hr 2
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 900x205x295
Weight kg
11
Package dimensions WxHxD mm 960x270x360
Packaged weight kg 14
Units per pallet units 24 units per pallet
INDOOR
Stacking height units 8 levels
Refrigerant control EEV
Compressor type, model Scroll, 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 WxHxD mm 795x290x610
Weight kg 38
Package dimensions WxHxD mm 945x395x655
Packaged weight kg 41
Units per pallet Units 9 units per pallet
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.26kg/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.15
OUTDOOR
Connections between
units
Max.height difference m. Max. 10
Operation control type Remote control
Heating elements 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.

3-1
RATING CONDITIONS
Revision Y05-01Service Manual - Delta DCI
3. RATING CONDITIONS
Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units).
Cooling:
Indoor: 27oC DB 19oC WB
Outdoor: 35 oC DB
Heating:
Indoor: 20oC DB
Outdoor: 7oC DB 6oC WB
3.1 Operating Limits
3.1.1 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 198 – 264 V

4-1
OUTLINE DIMENSIONS
Revision Y05-01Service Manual - Delta DCI
4. OUTLINE DIMENSIONS
4.1 Indoor Unit: Delta 22, 25 DCI
4.2 Indoor Unit: Delta 35 DCI
185
250
680
AIR OUTLET
AIR INTAKE
AIR INTAKE
INDOOR UNIT OUTLINE
244
160
118
TUBING WALL OPENING
(FOR REAR LEFT ROUTING)
670
41
40
TUBING WALL OPENING
(FOR REAR ROUTING)
380
52
80
141
MOUNTING TEMPLATE
TO BE USED FOR LOCATION
OF INDOOR UNIT ON THE WALL
58
Min50
306
46
CEILING
185
250
840
AIR OUTLET
AIR INTAKE
830
160
AIR INTAKE
TUBING WALL OPENING
(FOR REAR ROUTING)
TUBING WALL OPENING
(FOR REAR LEFT ROUTING)
504
137
50
40
52
MOUNTING TEMPLATE
TO BE USED FOR LOCATION
OF INDOOR UNIT ON THE WALL CEILING
406
172 70 59
Min50
244
80
INDOOR UNIT OUTLINE

4-2
OUTLINE DIMENSIONS
Revision Y05-01 Service Manual - Delta DCI
4.3 Indoor Unit: 50 DCI
4.4 Outdoor Unit: DCR 22, 25, 35 DCI
TUBING WALL OPENING
(FOR REAR ROUTING)
205
AIR OUTLET
AIR INTAKE
AIR INTAKE
295
900
TUBING WALL OPENING
(FOR REAR LEFT ROUTING)
295
80
900
40
440
50
INDOOR UNIT OUTLINE
CEILING
MOUNTING TEMPLATE
TO BE USED FOR LOCATION
OF INDOOR UNIT ON THE WALL
483
65
Min50
65
AI R OUTL ET
AI R I NTAKE

4-3
OUTLINE DIMENSIONS
Revision Y05-01Service Manual - Delta DCI
4.5 Outdoor Unit: DCR 50 DCI

5-1
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-02Service Manual - Delta DCI
5. PERFORMANCE DATA
5.1 Delta 22 DCI
5.1.1 Cooling Capacity (kW) – Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [oC]
OD 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 2.12 2.26 2.40 2.54 2.68
SC 1.62 1.65 1.69 1.72 1.75
PI 0.52 0.53 0.54 0.55 0.56
30
TC 2.02 2.16 2.30 2.44 2.58
SC 1.58 1.61 1.65 1.68 1.71
PI 0.58 0.59 0.60 0.61 0.62
35
TC 1.92 2.06 2.20 2.34 2.48
SC 1.54 1.58 1.61 1.64 1.68
PI 0.64 0.65 0.66 0.67 0.68
40
TC 1.82 1.96 2.10 2.24 2.38
SC 1.50 1.54 1.57 1.60 1.64
PI 0.70 0.71 0.72 0.73 0.74
46
TC 1.70 1.84 1.98 2.12 2.26
SC 1.46 1.49 1.52 1.56 1.59
PI 0.77 0.78 0.79 0.80 0.81
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
OD – 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 [deg C]
Capacity Ratio

5-2
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-02 Service Manual - Delta DCI
5.1.3 Heating Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [oC]
OD COIL
ENTERING
AIR DB/WB
TEMPERATURE
[oC]
DATA 15 20 25
-15/-16 TC 1.59 1.48 1.37
PI 0.44 0.48 0.53
-10/-12 TC 1.77 1.66 1.55
PI 0.53 0.57 0.62
-7/-8 TC 1.91 1.80 1.68
PI 0.60 0.64 0.68
-1/-2 TC 1.97 1.86 1.75
PI 0.63 0.67 0.72
2/1 TC 2.02 1.91 1.80
PI 0.65 0.70 0.74
7/6 TC 2.61 2.50 2.39
PI 0.69 0.73 0.77
10/9 TC 2.75 2.64 2.53
PI 0.73 0.77 0.82
15/12 TC 2.90 2.79 2.68
PI 0.77 0.81 0.86
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 Y05-02Service Manual - Delta DCI
5.2 Delta 25 DCI
5.2.1 Cooling Capacity (kW) – Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [oC]
OD 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 2.41 2.57 2.73 2.89 3.05
SC 1.67 1.71 1.74 1.77 1.81
PI 0.59 0.60 0.61 0.62 0.63
30
TC 2.30 2.46 2.62 2.77 2.93
SC 1.63 1.67 1.70 1.73 1.77
PI 0.66 0.67 0.68 0.69 0.70
35
TC 2.18 2.34 2.50 2.66 2.82
SC 1.59 1.63 1.66 1.69 1.73
PI 0.73 0.74 0.75 0.76 0.77
40
TC 2.07 2.23 2.39 2.54 2.70
SC 1.55 1.59 1.62 1.65 1.69
PI 0.80 0.81 0.82 0.83 0.84
46
TC 1.93 2.09 2.25 2.41 2.56
SC 1.50 1.54 1.57 1.61 1.64
PI 0.88 0.89 0.90 0.91 0.92
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
OD – Outdoor
5.2.2 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 [deg C]
Capacity Ratio

5-4
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-02 Service Manual - Delta DCI
5.2.3 Heating Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [oC]
OD COIL
ENTERING
AIR DB/WB
TEMPERATURE
[oC]
DATA 15 20 25
-15/-16 TC 1.78 1.66 1.53
PI 0.49 0.54 0.59
-10/-12 TC 1.98 1.86 1.73
PI 0.59 0.64 0.69
-7/-8 TC 2.14 2.01 1.89
PI 0.67 0.72 0.77
-1/-2 TC 2.21 2.09 1.96
PI 0.71 0.76 0.81
2/1 TC 2.26 2.14 2.01
PI 0.73 0.78 0.83
7/6 TC 2.92 2.80 2.68
PI 0.77 0.82 0.87
10/9 TC 3.09 2.96 2.84
PI 0.82 0.87 0.92
15/12 TC 3.25 3.12 3.00
PI 0.86 0.91 0.96
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 Y05-02Service Manual - Delta DCI
5.3 Delta 35 DCI
5.3.1 Cooling Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [oC]
OD 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 3.82 4.04 4.26
SC 2.54 2.59 2.64 2.69 2.74
PI 0.81 0.83 0.84 0.86 0.87
30
TC 3.22 3.44 3.66 3.88 4.10
SC 2.48 2.53 2.58 2.63 2.68
PI 0.90 0.92 0.94 0.95 0.97
35
TC 3.06 3.28 3.50 3.72 3.94
SC 2.42 2.47 2.52 2.57 2.62
PI 1.00 1.01 1.03 1.05 1.06
40 TC 2.90 3.12 3.34 3.56 3.78
SC 2.36 2.41 2.46 2.51 2.56
PI 1.09 1.11 1.12 1.14 1.16
46 TC 2.70 2.92 3.15 3.37 3.59
SC 2.28 2.34 2.39 2.44 2.49
PI 1.21 1.22 1.24 1.25 1.27
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
OD – 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 [deg C]
Capacity Ratio

5-6
PERFORMANCE DATA & PRESSURE CURVES
Revision Y05-02 Service Manual - Delta DCI
5.3.3 Heating Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [oC]
OD COIL
ENTERING
AIR DB/WB
TEMPERATURE
[oC]
DATA 15 20 25
-15/-16 TC 2.29 2.13 1.97
PI 0.63 0.69 0.76
-10/-12 TC 2.55 2.39 2.23
PI 0.76 0.82 0.89
-7/-8 TC 2.75 2.58 2.42
PI 0.86 0.92 0.98
-1/-2 TC 2.84 2.68 2.52
PI 0.91 0.97 1.03
2/1 TC 2.91 2.75 2.59
PI 0.94 1.00 1.07
7/6 TC 3.76 3.60 3.44
PI 0.99 1.05 1.11
10/9 TC 3.97 3.81 3.65
PI 1.04 1.11 1.17
15/12 TC 4.17 4.01 3.85
PI 1.10 1.17 1.23
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