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321

First Prize

Office Buildings

(more than 10 lakh kWh/year consumption)

INFOSYS LIMITED

SOFTWARE DEVELOPMENT BLOCK-2 Chengalpet (Tamil Nadu)

Unit Profile

Infosys is a global leader in consulting, technology, and outsourcing solutions. As a

proven partner focused on building tomorrow's enterprise, Infosys enables clients in

more than 50 countries to outperform the competition and stay ahead of the

innovation curve. With US$ 8.25 bn in FY14 revenues and 165,000+ employees,

company provide enterprises with strategic insights on what lies ahead. Infosys

campus in Mahindra World City was started in the year 2005 and has been growing

steadily since then. Today, company has close to 15000people working out of this

campus. The campus is engaged in high end software development works for the

various customers spread around globally. As a responsible Corporate, company has

embarked on a journey towards sustainability in terms of Energy Usage in the

campus.

322

Energy Consumption

Year

Total electricity

consumption/ Total built-

up area (kWh/m2)

% Reduction over

2013 - 2014

2012-13 207.75 --

2013-14 141.78 31.75%

BUILDING AREA AND CONNECTED LOAD DETAILS

Building Area and Connected Load 2012-13 2013-14

Total Built up Area (in m2) 12399 12399

Air-conditioned area (in m2) 10540 10540

Non-Air conditioned area (in m2) 1859 1859

Total Connected Load ( in kW) 1105 600

Average power factor for the period 0.99 0.99

Building operating hours 10 10

ENERGY CONSERVATION PROJECTS IMPLEMENTED

• Central Air-Conditioning Plant with automation controls and monitoring to

meet out the high energy efficiency standards. The central plant also

provides us a good amount of diversity in operation.

• Re-commissioned all the AHUs, VFDs, and Actuators & Sensors.

• Replacing Air cooled VRVs (Dx units) with Centralized Air conditioning.

ECM 1 – Central Air-conditioning plant with automation controls and monitoring to meet out the energy efficiency standards

As a part of energy saving initiative, company have converted the air cooled chiller

into water cooled chiller by connecting the pipe line from centralized water cooled

chiller plants to SDB with necessary valves. This has helped building to minimize

the high power required to run the chillers. The water cooled chiller’s efficiency is

about 0.6 KW/TR whereas the air cooled chiller efficiency is 1.65 KW/TR.

ECM 2 - Re-commissioned all the AHUs, VFDs, Actuators & Sensors

Building has replaced the conventional valves with PIBCV valves which will modulate

on the basis AHU’s of supply air temperature. The chiller would be utilized at

optimum level when the PIBCV valve is modulated which triggers the reduction in

energy consumption in the centralized chiller plant. These valves basically regulate

the chilled water flow to the required load condition based on the occupation.

323

The AHU’s return air sensor has been replaced with advanced one which will

modulate the VFD operation. The energy consumption of AHU’s motor and as well as

chiller would get reduced considerably with the help of VFD modulation.

ECM 3 - Replacing Air cooled VRVs with Centralized Air conditioning

Building has switched off the air cooled VRV indoor AC units which are connected to

floor cabins and meeting rooms and the same has been extended through duct from

centralized water cooled AHU. This has resulted in reducing the inefficiency in terms

of using conventional Dx units.

The energy consumption has been reduced from 1.2 kW/TR with VRV air cooled AC

operation to 0.6 kW/TR with the help of centralized plant AHU.

324

Second Prize

Office Buildings


NORTHERN RAILWAY, LUCKNOW DIVISION

Lucknow (Uttar Pradesh)

Unit Profile

Lucknow Division, formerly part of Oudh Rohilkhand Railway up to 1925, and later

part of East Indian Railway from 1925 to 1952, caters to rail transport requirement

of the most populous state of the country, serving 14 districts of Uttar Pradesh with

a total route network of 1460.12 Kms.

This Division is predominating passenger services oriented with about 398

passenger-carrying trains. The Division provides vital link between Eastern and

Northern States for freight & passenger traffic. The important stations e.g.

Lucknow, Varanasi, Faizabad, Ayodhay, Prayag, Pratapgarh, Sultanpur & Raebareli

are part of this division. The DRM office, Lucknow is the main administrative &

control building for entire train operation, planning and execution. The building is

centrally located in Hazaratganj the heart of Lucknow City.

In recent past, the need to upgrade infrastructure of Divisional system has been also

addressed. Notwithstanding the constraints, deficiencies and shortcomings in the

system, Lucknow Division has continually made major strides to achieve higher level

of performance in all areas.

Energy Consumption

Year Total electricity consumption/ Total built-up area (kWh/m2)

% Reduction over 2012-13

2012 - 2013 125.57

2013 - 2014 89.14 29.01%

Elect. Saving in 2013-14

(Lakh kWh)

Elect. in 2012-13

Consumption (Lakh kWh)

% Elect. Saving (savings achieved/ electricity

consumption of previous year)

(i) (ii) (i) / (ii) x 100

4.2 14.5 28.97%

325





Total Connected Load ( in kW) 475 515

Building contract demand with electric utility company (kVA)

325 325


Energy Consumption Project Implemented

1. Replacement of 545 Nos. 90 watt ceiling fan by 425 Nos. 60 watt ceiling with

Electronic regulator and replacement of 210 Nos. 90 watt ceiling fan by 50 Nos.

40 watt bracket fans resulted into reduction of energy from 184975 kWh to

48125 kWh.

2. Replacement of 535 Nos. 40 watt tube light fitting with 395 Nos. 28 W T-5

fitting resulted into reduction of energy from 105975 kW to 48300 kW.

3. Provision of occupancy sensor in Officers chamber resulted into saving of 41160

kW.

4. Replacement of 3 x 36 W CFL, 40 W, 2 x 40 W Tube light with LED light fittings

in DRM Office resulted into reduction of energy from 1,18,792 kWh to 27,186

kWh.

Other steps such as timely switching off of light, fan & AC load in offices, controlling

maximum demand, replacement of inefficient ACs, proper temperature setting etc.

326

Certificate Of Merit

Office Buildings


INFOSYS LIMITED

Software Development Block - 1 Chengalpet (Tamil Nadu)

Unit Profile

Infosys campus in Mahindra World City was started in the year 2005 and has been

growing steadily since then. Today, company has close to 15000 people working out

of this campus. The campus is engaged in high end software development works for

the various customers spread around globally.

ENERGY CONSUMPTION

Year Total electricity consumption/

Total built-up area (kWh/m2)

% Reduction over

2013 - 2014

2012-13 231.13 --

2013-14 166.47 27.97%

327

Building Area and Connected Load Details





Total Connected Load (in kW) 1050 585



ENERGY CONSERVATION PROJECTS IMPLEMENTED:

• Central Air-Conditioning Plant with automation controls and monitoring to meet

out the high energy efficiency standards. The central plant also provides us a

good amount of diversity in operation.

• Re-commissioned all the AHUs, VFDs, and Actuators & Sensors.

• Replacing Air cooled VRVs (Dx units) with Centralized Air conditioning.

ECM 1 – Central Air-conditioning plant with automation controls and

monitoring to meet out the high energy efficiency standards:

Campus has converted the air cooled chiller into water cooled chiller by connecting

the pipe line from centralized water cooled chiller plants to SDB with necessary

valves. This has helped campus to minimize the high power required to run the

chillers. The water cooled chiller’s efficiency is about 0.6 kW/TR whereas the air

cooled chiller efficiency is 1.65 kW/TR.

ECM 2 - Re-commissioned all the AHUs, VFDs, Actuators & Sensors:

Campus has replaced the conventional valves with PIBCV valves which will modulate

on the basis AHU’s of supply air temperature. The chiller would be utilized at

0

50

100

150

200

250

kWh/m

2

Year

SDB-1

2012 - 2013

2013 - 2014

328

optimum level when the PIBCV valve is modulated which triggers the reduction in

energy consumption in the centralized chiller plant. These valves basically regulate

the chilled water flow to the required load condition based on the occupation.

The AHU’s return air sensor has been replaced with advanced one which will

modulate the VFD operation. The energy consumption of AHU’s motor and as well as

chiller would get reduced considerably with the help of VFD modulation.

ECM 3 - Replacing Air cooled VRVs with Centralized Air conditioning:

Campus has switched off the air cooled VRV indoor AC units which are connected to

floor cabins and meeting rooms and the same has been extended through duct from

centralized water cooled AHU. This has resulted in reducing the inefficiency in terms

of using conventional Dx units.

The energy consumption has been reduced from 1.2 kW/TR with VRV air cooled AC

operation to 0.6 KW/TR with the help of centralized plant AHU.

0

2000

4000

6000

8000

10000

12000

14000

Units

2012 to 2013 2013 to 2014

329

First Prize

Office Buildings

(less than 10 lakh kWh/years consumption)

SOUTH CENTRAL RAILWAY, HYDERABAD DIVISION

HYDERABAD BHAVAN Hyderabad (Telangana)

Unit Profile

Hyderabad Bhavan, which was built in the year 2007, is the Divisional office of the

Hyderabad Division, South Central Railway (SCR). The entire train operations of this

division is controlled and monitored from this building.

The entire building is surrounded by Green patches to provide serene and lush green

ambience which will also add to the conservation of energy. LED facade lighting is

being used to illuminate during the night hour.

Energy Consumption

Elect. Saving in

2013-14

(Lakh kWh)

Elect. Consumption in

2012-13

(Lakh kWh)

% Elect. Saving (savings

achieved/ electricity consumption

of previous year)

1.20 3.97 29.98

330

Energy Conservation Measures Taken

1. Energy Monitoring system

Exclusively monitoring the Energy consumption every day by specially designed

software “Eagle Eye” and balancing the phase currents, which have given major

thrust in saving of energy.

2. Installation of 6 Nos. Star rated Ceiling fans in place of Conventional

ceiling fans

Provided 06 No’s of Star Rated Ceiling Fans in place of 60W Ceiling Fan leading to

saving of 156 Units amounting to Rs.1221/- per annum. This building was provided

with 98 % of fans are of BEE 5 star rated.

3. Installation of 92 Nos. LED 15 W down light fitting (Including driver) in

place of CFL 2x18 W

Provided 92 No’s of 15W LED Down light Fittings (Including driver) in place of

2x18w CFL Fittings leading to saving of 9,568 Units amounting to Rs.74,917/- per

annum.

4. Installation of 08 Nos. of LED 03 W (Including driver) in place of 50W

Halogen fitting

Provided 08 No’s 3W LED Fittings (Including driver) in place of 50W Halogen fitting

leading to saving of 978 Units amounting to Rs.7,658/- per annum.

5. Installation of 54 Nos. T-5 2’x14 W fitting in place of T-5 4’x28w fitting

Provided 54 No’s of T-5 Fitting 2’-14W in place of T-5 Fitting 4’-28W leading to

saving of 2,106 Units amounting to Rs. 16,490/- per annum.

6. Installation of 08 Nos. 10W LED Fitting (Including driver) in place of

CFL Fittings 2x11W fitting

Provided 08 No’s of 10W LED Fittings (Including driver) in place CFL Fittings 2x11W

leading to saving of 416 Units amounting to Rs. 3,257/- per annum.

57.37

40.17

0

10

20

30

40

50

60

Specific Energy Consumption (SEC)

Total electricity consumption/ Total built-up

area (kWh/m2)

2012-2013

2013-2014

331

7. Installation of 02 Nos. 40W Induction Fittings in place of 70W MH

Fitting

Provided 2 No’s of 40W Induction Fitting in place of MH Fitting 70W leading to saving

of 312 Units amounting Rs.2, 443/- per annum.

8. Installation of 02 Nos. LED 50W Outdoor Fitting (Including driver) in

place of 70W MH Fitting

Provided 2 No’s of LED 50W Outdoor fitting (Including driver) in place of 70 W MH

Fitting in the gate entrance of the building leading to saving of 438 Units amounting

Rs.3, 430/- per annum.

9. Removed 09 Nos of F.T Mirror optic fitting 2x40W (Redundant Fitting)

Removed 9 No’s F.T Mirror optic 2x40W fitting (Redundant Fittings in various

chambers) leading to saving of 2,574 Units amounting Rs.20, 154/- per annum.

10. Installation of 90 Nos. LED 07W (Including driver) in place of CFL

2x18W Fitting

Provided 90 No’s of 7W LED Fittings(Including driver) in place of CFL 2x18W Fittings

leading to saving of 11,232 Units amounting Rs. 87,947/- per annum. These are

provided in the corridors/staircases/halls.

11. Installation of 07 Nos. Star rated Split AC Unit 1.5 Tr in place of 1.5 Tr

Window AC Unit

Provided 7 No’s of Star rated Split AC Unit 1.5ton in place of Window AC unit 1.5 ton

leading to saving of 7,280 Units amounting Rs.57, 002/- per annum.

12. Installation Sun light Control film for AC rooms

Stickered Sun light control film for AC Officer Chambers and Control room leading to

saving of 698 Units amounting Rs.5465/- per annum.

13. Installation of 04 Nos. 40W Induction fitting in place of 150W MH

Fitting

Provided 4 No’s of 40W Induction Fitting in place of MH Fitting 150W leading to

saving of 2,803 Units amounting Rs. 21,947/- per annum. These fittings are

provided in the portico of the building entrances in the both sides.

14. Installation of 12 Nos. LED 15W Fitting (Including driver) in place of

CFL 2x18W Fitting

Provided 12 No’s of 15W LED Down light Fittings (Including driver) in place of

2x18w CFL Fittings leading to saving of 2,103 Units amounting Rs. 16,466/- Per

annum which are used in the control office for more than 12 hours.

15. Savings of Lift operational Hours

Savings gained from Lift operational Hours - Resulting in savings of 14,547 Units

amounting Rs.1, 13,903/- per annum. One lift is being switched off to encourage the

staff to use staircases for their health and optimum utilization of the lift.

332

16. Installation of 11 Nos. Occupancy Sensors (Toilets)

Provided 11 No’s of Occupancy Sensors in Toilets leading to saving of 3,604 Units

amounting Rs. 28,219/- per annum.

17. Switching ‘OFF’ of unnecessary equipments and luminaries by

sensitizing the Electrical and Security staff particularly record rooms.

Good Operational Practices Adopted for Energy Conservation

• Energy monitoring system - Exclusively monitoring the Energy consumption

every day by specially designed software “Eagle Eye”.

• Daily monitoring the Energy consumption through specially designed software.

• Creating awareness among the users through various activities such as

brochures / seminars.

• To minimize the specific energy consumption w.r.t previous years.

• Conducting of regular inter departmental energy audits aimed to minimize the

energy losses.

• Implemented the action plan of energy conservation items to reduce the Energy

Consumption at least by 10% every year w.r.t. previous years targets.

• Promote use of the renewable sources of energy.

• LED Fittings are used in the office lighting in various chambers and corridors.

• All the stair cases are fitted with lower wattage (7W) LED bulk head fittings

• Provided 13 Nos. of AC’s units with 5-star rated working in synchronization of

occupancy sensors in the chambers.

• Provided 12 No’s of Energy saver for AC units for continuous working AC’s in the

control centre.

• Water coolers in the building are provided with timer control to operate during

the office hours only. Timer will switch off after 6 hours in the evening.

• Toilets are provided with motion sensors to work lights and exhaust fans only in

case of utilization by staff.

• Special focus to switch off the computers in the evening session with help of

office peons.

• Timer’s provision for the façade lights and Garden lights with timer control to

switch off at 22:00 hrs pm.

333

Second Prize

Office Buildings (less than 10 lakh kWh/years consumption)

ICICI BANK LIMITED

SRIRAM TOWER

Khairatabad (Telangana)

Unit Profile

ICICI Bank provides sustainable banking products to cater to different classes of

customers through its extensive branch and ATM network, mobile, phone, internet

and doorstep banking.

ICICI Bank is taking several steps in Energy conservation, Transportation Efficiency,

Water conservation, Paper usage reduction, waste management under Go Green

Drive.

The Go Green Initiative of ICICI Bank cuts across all functions and departments.

Each team from the top management to lowest level is involved in driving these

initiatives in their respective domains. There is a Go Green Steering Committee

formed comprising senior members from all verticals to drive energy, water and

waste reduction initiatives. Regular employee engagement activities like plantation

drive, weigh paper drive, idea generation drive, Pollution under Control (PUC) drive,

no plastic day, etc. are carried out on regular intervals to involve all employees in

the initiative and inculcate the culture of sustainability.

The operations of ICICI Bank have commenced at Sriram Tower, Khairatabad since

2008. The total area of the tower is 1600 Sq. meters with multiple floors (G+5). The

area occupied by ICICI Bank for its operation is 1158 Sq. meters. Total manpower

strength at this tower is 195.

334

Energy Consumption

Energy Conservation Measures Taken

Sr. No. Activity

Elect. Saving

(Lakh kWh) in

2013-14

Elect. Saving

(Lakh Rs.) in

2013-14

Investment

(Lakh Rs.) in

2013-14

1 Optimisation of

HVAC timings 0.45 4.05 Nil

2 Switching off

unwanted loads 0.31 2.79 Nil

3 Controlling of HVAC

temperature 0.29 2.61 Nil

4 Optimisation of

lighting timings 0.14 1.26 Nil

Total 1.20 10.71

Achievements

• Investment – Nil. (Savings achieved

without any capital investment)

• Reduction in EPI & Energy requirement –

29.8%

• Amount Saved - Rs. 10.71 Lakh

0

100000

200000

300000

400000

500000

2012-13 2013-14

Units

Energy Uses

Year Energy Usages (kWh)

2012-13 4,04,477

2013-14 2,83,630

335

Certificate of Merit

Office Buildings


INFOSYS LIMITED

Software Development Block-4 Sholinganallur, Chennai (Tamil Nadu)

Unit Profile

Infosys campus in Sholinganallur was established in the year 2000-2001 and has

been developed in a phased manner. Company is servicing fortune 500 global clients

from this location. There has been series of energy conservation and drive taken up

to ensure optimum energy utilization.

ENERGY CONSUMPTION

Year

Total electricity


up area (kWh/m2)

% Reduction over

2013 - 2014

2012-13 157.8 --

2013-14 115.3 26.9%

336

HVAC ENERGY PROFILE









ENERGY CONSERVATION PROJECTS IMPLEMENTED

The Infosys Shols campus underwent major energy efficiency retrofits over the

period of past one and half years in almost all the key energy intensive areas. The

Software Development Block 4 (SDB 4) is one of the office buildings where most of

157.8

115.3

0

20

40

60

80

100

120

140

160

180

2012-2013 2013-2014

kWh/m2

2012-2013 2013-2014

153317

94115

0

20000

40000

60000

80000

100000

120000

140000

160000

180000

2012-2013 2013-2014

kWh/m2

SDB-4

2012-2013 2013-2014

337

the ECMs have been implemented. Below are the major re-engineered areas in the

aspect of our building energy efficiency & environmental quality enhancement

program

• Operational optimization at chiller plant – Best operational methods implemented

to achieve the maximum efficiency with minimum energy.

• Building Lighting system - Replaced the existing entire lighting fixtures with LED

fixtures for lux level enhancement and energy conservation

• Converted conventional UPS with modular UPS.

• Re-commissioning of AHU VFDS, ACTUATORS AND SENSORS

• Converted all DX units into Chilled water split units

Best operational practices implemented in B4

ECM 1 – Operational optimization at chiller plant

The following are the new activities have been adapted in central air-conditioning plant:

Operational optimization at chiller plant

1. VFD’s operational settings redefined with respect to Chiller operation:

Based on recorded operational pattern company found that Condenser and chilled

water pumps were operating in a uniform pattern and the necessary modulations

were not happening properly as per low side load variations. VFD was introduced

with appropriate settings done to meet out the highest efficiency of the chiller and

its accessories with proper modulations on the flow pattern.

2. Cooling towers efficiency improvement:

Based on the evaluation company found that the existing cooling towers

effectiveness was 28-36%. It was decided to go with new cooling towers of 3 x 500

TR Capacity in terms of latest construction model with 58.8% effectiveness to

improve the plant efficiency.

3. Chiller:

Chillers are the highest energy consuming equipments in air conditioning systems.

With the help of detailed study, the new Chiller selection was done for 6.4 COP from

the earlier levels of 3.6-4 COP. The Chiller alone improves the efficiency by 38%.

4. Auto tube cleaning System:

Company has installed auto tube cleaning system (ATCS) on condenser line of the

new Chiller to eliminate the scales accumulation. ATCS will help to remove the soft

scales at regular intervals before it become hard scale formation in tubes.

5. Plant manager:

The objective of Chiller plant manager (CPM) for existing Chiller plants is to integrate

all the plant equipment, incorporation of automated energy saving algorithms to

reduce consumption, eliminate wastage and improve Chiller plant overall efficiency.

CPM will also provide a lot of real time and historical energy and efficiency data to

manage the Chiller plant consumption effectively.

338

On annual basis kWh

Energy consumption before

2012-2013

153317

Energy consumption after 2013-

2014

94115

ECM 2 - Replaced the existing entire lighting fixtures with LED fixtures for lux level enhancement and energy conservation

The main objective of this retrofit is to enhance the lux level of the present lighting

system to meet the IEQ (Indoor Environmental Quality) standards without any

further increase in connected load. A detailed study had been conducted on campus

lighting system and the actual lux levels of various work stations are mapped. Based

on the study outcome, the right LED lighting fixtures had been selected. The savings

is as follows.

On annual basis kWh

Energy consumption before

2012-2013

98335.1

Energy consumption after

2013-2014

78335

ECM 3 – Replaced conventional UPS with Energy Efficient modular UPS

In conventional design UPS system use to design for backup of the computers/IT

equipment during power failure or power change overs with several UPS units in

parallel mode or hot standby arrangement based on the redundancy requirements.

With the conventional design if you need 2 UPS units to back up the critical load the

3rd UPS would be required to create a redundancy (N+1 configuration).

In addition the UPS units use to design considering the old technology computers

which had an operating load of 200 to 250 Watts per computer. Over years of

technology change & push towards energy efficiency the computers became very

efficient by 2x (100–125 Watts per computer). However UPS units are not being

looked at, hence, they have become power consuming devices instead of backup

units.

Under these conditions UPS systems are under loaded and overall efficiency of UPS

is also very low in part loads. To overcome this challenge and to reduce energy

consumption, campus started regrouping the UPS system capacity and design with

latest technology of modular UPS system. Where the entire unit works as a single

backup source with multiple smaller capacity UPS modules connected in parallel.

Because of inbuilt modular design of the unit campus can reduce the installed

capacity up to 40%. Also campus can increase the loading on the entire UPS system

all the time as the system has in built intelligence to operate only the required

number of modules based on load. The modular UPS not only helps in reducing the

total installed capacity but also help to increase the load based on increase in

business requirement.

339

Campus has achieved a 20% reduction in UPS connected. The new modular UPS

systems have 93% efficiency, compared to the older 78% efficiency systems. About

210 kW Modular UPS are connected. The reduction in SDB 5 UPS systems energy

consumption as follows,

On annual basis kWh

Energy consumption before 2012-2013 431635

Energy consumption after 2013-2014 398800

ECM 4 –Re-commissioning of AHU VFDs, Actuators and Sensors

The entire HVAC system had been re-commissioned to achieve high level of energy

efficiency. The below mentioned savings had been realized in SDB 4

On annual basis kWh

Energy consumption before 2012-

2013

145596


ECM 5 – Converted all DX units into water based cassette units

Switched off all DX units and operating chilled water based cassette units in Server

room, Despatch, Telephone room and Meeting room to conserve energy.

On annual basis kWh

Energy consumption before 2012-2013 196982.4


340

Certificate of Merit

Office Buildings


INFOSYS LIMITED

SOFTWARE DEVELOPMENT BLOCK-6 Sholinganallur, Chennai (Tamil Nadu)

Unit Profile

Infosys campus in Sholinganallur was established in the year 2000-2001 and has

been developed in a phased manner. Company is servicing fortune 500 global clients

from this location. There has been series of energy conservation and drive taken up

to ensure optimum energy utilization.

ENERGY CONSUMPTION

Year

Total electricity


up area (kWh/m2)

% Reduction over

2013 - 2014

2012-13 137.4 --

2013-14 100.9 26.6%

137.4

100.9

0

20

40

60

80

100

120

140

160

2012-2013 2013-2014

kWh/m2

2012-2013 2013-2014

341









SDB-6 ENERGY CONSERVATION PROJECTS IMPLEMENTED:

ECM 1 – Operational optimization at chiller plant:

• VFD’s operational settings redefined with respect to Chiller operation

• Cooling towers efficiency improvement

• Selection of efficient Chiller

• RO Water quality for chiller and condenser

• Auto condenser tube cleaning System

ECM 2 - Replaced the existing entire lighting fixtures with LED fixtures for

lux level enhancement and energy conservation

ECM 3 – Replaced conventional UPS with Energy Efficient modular UPS

ECM 4 –Re-commissioning of AHU VFDs, Actuators and Sensors

ECM 5 – CENTRALIZED AIR CONDITIONING DUCT EXTENDED TO MANAGER

CABINS AND CONVERTED ALL DX UNITS INTO WATER BASED CASSETTE

UNITS.

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