Climate Wizard CW-H10 Application Manual - User Manual

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This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

GENERAL

Climate Wizard is an “Indirect Evaporative Air Cooler” that is capable of delivering cooled air, with no

added moisture at temperatures that are very similar to those produced by refrigerated air

conditioners. The Climate Wizard comprises of one (1) backward curved, high pressure,

centrifugal fan directly connected to an electronically commutated motor (ECM), a multi-patented

heat exchanger core, a water reservoir and water distribution system including circulating centrifugal

pump(s), automatic chlorination device and an auto water management feature.

Climate Wizard cannot remove moisture, but it does not add any moisture.

Climate Wizard is manufactured in two configurations - HORIZONTAL and VERTICAL. This

Application Guide refers to the HORIZONTAL configuration only.

The heat exchanger core may comprise of 2 or 3 sections.

The 2-section model is the CW-H10, with nominal cooling capacity of 10 KW*

The 3-section model is the CW-H15, with nominal cooling capacity of 15 KW*.

* [Cooling capacity is calculated at inlet conditions of 38

C dry-bulb and 10

C dewpoint temperatures, in accordance with Australian Standard AS2913-

2000. For other conditions refer tables on page 5. This capacity applies only when the Climate Wizard is being used in Stand Alone Cooling
applications. For Cold Front Cooling higher capacities apply - refer table on page 9.]

Not all the inlet air is delivered into the building. Inside the Climate Wizard the air is divided into

two streams..One stream is supercooled and delivered into the building, and the second stream is

used to intensify the wet-bulb depression, is supersaturated and discharged to atmosphere along

with all the heat that has been removed from the dry fresh air stream.

External Static pressure affects the behaviour of the two air streams inside the machine. A means

of compensating for the external static pressure will be provided on the Climate Wizard depending

on the application - see later information in this Guide.

INLET

(AMBIENT)

AIR

EXHAUST

AIR (WARM

& MOIST)

SUPPLY

AIR (COOL

& DRY)

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

GENERAL ….cont’d

Being a water based machine Climate Wizard incorporates features that recognise the necessity of

managing water quality and of complying with Codes that address regulations for health protection.

Inside the cooler there is an electrolytic Chlorinator that generates free Chlorine in the water

reservoir and behaves as a permanent biocide to annul any bacterial activity in the water. It is fail-

safe because if it ceases to function, the Climate Wizard will also shut down.

A water management system measures the salinity of the water and drains a percentage of the

water from the reservoir while admitting fresh water to dilute the salt concentration in the reservoir.

A 3-probe detector is located in the reservoir. This feature can be field set to either measure the

salinity via the probes, or to drain water out and admit fresh water after the level has reached the top

probe eight (8) times. [This is a measure of how much water has been evaporated in the machine.]

In Salinity measuring mode it maximises water usage before purging, thereby eliminating water

wastage.

SERVICES - water & electricity & drain

Climate Wizard requires a permanent water supply to be connected. 1/2 inch BSP male connection

point provided on the cooler (see diagram). Pressure range required - 100 kPa - 800kPa at flow

rate of 20 L/min.

Climate Wizard requires 3-phase electrical power to be supplied. Minimum 10 amp, 4-wire+

ground conductors supplied from independent circuit breaker. If required, main isolation switch to

be furnished by contractor adjacent to the cooler. Main power terminals provided inside electrical

cabinet with glands provided for cable entry.

A built-in Drain Valve is controlled by the water management system. The valve has 40mm BSP

male connection and is provided with a reducing fitting for connection if desired to a flexible hose for

running water to waste. See diagram for location. Recommended minimum drain hose internal

diameter 20mm.

TOP VIEW

121

120

DRAIN IN

FLOOR OF TANK

806

ACCESS COVER FOR
DRAIN CONNECTION

WATER CONNECTION

/2” BSP NIPPLE

806

AIR

INLET

END VIEW

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

Climate Wizard is designed to be used in 3 different types of applications:
1.

STAND ALONE COOLING - in cases where the Climate Wizard is the primary source of Air

Conditioning for the building.

2. SUPPLEMENTARY COOLING - in cases where the Climate Wizard is used to augment the

capacity of the existing air conditioning system, or to extend its reach into the building, or to

greatly reduce the energy consumption of the Air Conditioning plant.

COLD FRONT COOLING - in cases where the Climate Wizard is used to pre-cool the fresh air

supply to new or existing refrigerated air conditioning plants in order to prolong the life of the

plants, to save significant energy, and to greatly reduce demand on existing infrastructure

which becomes over-stressed in heat-wave conditions.

In each application type, remarkable energy savings can be achieved compared with conventional

Refrigerated Air Conditioning. THE HOTTER THE CLIMATE THE MORE SAVINGS WILL BE

MADE.

See following pages for details of each application type.

STAND ALONE COOLING

COLD FRONT COOLING

SUPPLEMENTARY COOLING

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

STAND ALONE COOLING:

Climate Wizard can be used to supply the entire air conditioning demand of a building.

The Climate Wizard is intended to be installed external to any building, but may also be installed

indoors, for example in an air conditioning plant room provided that fresh outside air can be supplied

to the cooler and that the exhaust air is discharged directly to the exterior of the building.

The supply air temperature delivered by the Climate Wizard, and its airflow, is similar to the tempera-

ture and airflow of a refrigerated Air Conditioner. Therefore the air distribution design should follow

similar parameters of design and installation. Essentially that means similar duct sizes, similar

outlet design and attention given to the avoidance of cold air drafts. The use of Zones is acceptable

provided that used air can exit the building satisfactorily.

IT IS ESSENTIAL THAT THE PLANT BE SO ARRANGED THAT THE CLIMATE WIZARD EX-

HAUST AIR CANNOT BE RECIRCULATED INTO THE AIR INLET OF THE COOLER.

Sizing:

It should be understood that the Climate Wizard performance is similar to a refrigerated Air Condi-

tioner in regard to the supply air temperature and the ‘no added moisture’ feature. Since refriger-

ated Air Conditioners are sized on the basis of a heatload calculation, Climate Wizard must be

treated in the same way. Contractors should therefore continue to use their regular method for de-

termining the heatload of a building and apply the Climate Wizard to that heatload. The ‘Air Change

Rate’ method that is often used for Direct Evaporative Air Coolers is NOT to be used.

However, the rated capacity of the Climate Wizard will vary according to the local climate conditions,

and the indoor temperature setting. Thus a second calculation must be made before the final siz-

ing of the cooler can be made.

For the CW-H10: Cooling capacity = K1 x

T watts

[

K1 = specific heat x density x airflow = 1.23 x 800 L/sec = 984)

T = (Tset room - Tsupply)] [Tsupply is found in table 1.]

For the CW-H15: Cooling capacity = K2 x

T watts

[

K2 = specific heat x density x airflow = 1.23 x 1100 L/sec = 1353)

T = (Tset room - Tsupply)] [Tsupply is found in table 1.]

Table 1.

SHOWS SUPPLY AIR TEMPERATURE FOR

GIVEN INLET DRY-BULB AND DEWPOINT

TEMPERATURES

Inlet dry-bulb temperature - deg C

26 32 38 44 50

9.4 10.7 12.2 13.6 15.0

11.1 12.2 13.5 14.8 16.0

13.4 14.2 15.4 16.3 17.3

16.4 17.0 17.6 18.4 19.0

20.5 20.6 20.8 21.0 21.2

Inlet Tdew

deg C

FOR CONTROL SCHEMES

SEE SECTION HEADED

“CONTROL SCHEMES”

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

STAND ALONE COOLING:

Tables of Nominal Cooling Effect for Climate Wizard in various locations and various jurisdictions.

Tdb

Twb

Tdew

Trm

CW H

0 CW H

deg C

Beijing

34.5 20.9

3.9

Birm'ghm

8.3

3.3

Cairo

37.6 22

4.3

7.5

Chicago

32.4 22.5

26.7

Dubai

42.8 23.8

4.5

Jo'berg

28.9

7.9

Madrid

35.9

8.7 7.5

Milan

33.9 22.8

7.9

9.5

Paris

32.3 20.6

4.6

Phoenix

43.4 20.4 5.5

26.7

NOMINAL COOLING EFFECT FOR NAMED CITIES KW

Tdb

Twb

Tdew

Trm

CW H

0 CW H

deg C

AS29

38 2

27.4

Eurovent

9 9.

UK (Cosaf)

6 5.6

7.5

CEC (USA)

32.8 20.5

26.7

ARI (USA)

35 23.9

9.3

26.7

NOMINAL COOLING EFFECT FOR NAMED STANDARDS/NORMS KW

Tdb

ambient dry bulb temperature

Twb

ambient wet bulb temperature

Tdew

ambient dewpoint temperature

Trm

selected room temperature

supply air temperature from Climate Wizard

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

SUPPLEMENTARY COOLING:

Climate Wizard can be used to boost or supplement the existing air conditioning capacity of a build-

ing. In this application the Climate Wizard will be installed in a similar way to the Stand Alone ap-

plication, but will be sized to provide added cooling capacity to the building. It can also be used to

supply all the fresh air requirement of a building and in this case it will be sized according to the

fresh air quantity requirement.

The Climate Wizard is intended to be installed external to any building, but may also be installed

indoors, for example in an air conditioning plant room provided that fresh outside air can be supplied

to the cooler and that the exhaust air is discharged directly to the exterior of the building.

The supply air temperature delivered by the Climate Wizard, and its airflow, is similar to the tempera-

ture and airflow of a refrigerated Air Conditioner. Therefore the air distribution design should follow

similar parameters of design and installation. Essentially that means similar duct sizes, similar

outlet design and attention given to the avoidance of cold air drafts. The use of Zones is acceptable

provided that used air can exit the building satisfactorily.

IT IS ESSENTIAL THAT THE PLANT BE SO ARRANGED THAT THE CLIMATE WIZARD EX-

HAUST AIR CANNOT BE RECIRCULATED INTO THE AIR INLET OF THE COOLER.

Sizing:

The decision to install supplementary cooling equipment will arise from a number of causes:
1.

Existing plant is overloaded

Existing plant is nearing end of life

Energy consumption of building must be reduced but ‘Cold Front Cooling’ (see later heading)

option is either not possible or not economical

Building has been extended but existing plant is at full capacity

In addressing points 1,2,3 above, since the Climate Wizard delivers 100% fresh air and with no

added moisture, the fresh air intake of the existing Air Conditioning plant should be closed in order

for the Climate Wizard to provide all the fresh air required for the building. This will have the imme-

diate effect of reducing the load on the existing plant and saving energy. The decision about the

quantity of Climate Wizard coolers depends entirely on matching the Climate Wizard airflow with the

quantity of fresh air that was being delivered by the existing plant. The amount of energy that was

being consumed by the existing plant will be greatly decreased because the Climate Wizard can

cool the same quantity of fresh air for much less consumed energy. See table under Cold Front

Cooling. The maximum supply airflow of the 2 Climate Wizard models is:
CW-H10

approx. 800 L/sec at 80 Pa

CW-H15

approx. 1100 L/sec at 80 Pa

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

SUPPLEMENTARY COOLING (cont’d):

Sizing (cont’d):

Addressing point 4 above, the foregoing procedure may be adequate to cope with the increased

load, but if not, additional Climate Wizard coolers may be installed. In this case the cooling capac-

ity of the Climate Wizard should be calculated in the same way as for Stand Alone cooling, using

local climate data and the desired indoor room temperature required by the Owners.

For the CW-H10: Cooling capacity = K1 x

T watts

[

K1 = specific heat x density x airflow = 1.23 x 800 L/sec = 984)

T = (Tset room - Tsupply)] [Tsupply is found in table 1.]

For the CW-H15: Cooling capacity = K2 x

T watts

[

K2 = specific heat x density x airflow = 1.23 x 1100 L/sec = 1353)

T = (Tset room - Tsupply)] [Tsupply is found in table 1.]

Table 1.

SHOWS SUPPLY TEMPERATURE FOR GIVEN

INLET

DRY-

BULB

AND

DEWPOINT

TEMPERA

TURES

Inlet Tdew

Inlet dry-bulb temperature

26 32 38 44 50

9.4 10.7 12.2 13.6 15.0

11.1 12.2 13.5 14.8 16.0

13.4 14.2 15.4 16.3 17.3

16.4 17.0 17.6 18.4 19.0

20.5 20.6 20.8 21.0 21.2

FOR CONTROL SCHEMES

SEE SECTION HEADED

“CONTROL SCHEMES”

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

COLD FRONT COOLING:

Cold Front Cooling describes the case in which Climate Wizard is used to pre-cool the fresh air com-

ponent of a refrigerated air conditioning plant. In most countries and jurisdictions around the world

a mandatory quantity of fresh air is required to be delivered into the building as a percentage of the

total air quantity of the air conditioning system. This quantity is often up to 25% of the total air re-

quirement of the application. Climate Wizard will completely cool this air at very low cost.

It is therefore extremely cost effective to use Climate Wizard to perform this function and thereby

reduce the load on the refrigeration plant, and its wear and tear while greatly reducing the cost of

running the plant.

The Climate Wizard is intended to be installed external to any building, but may also be installed

indoors, for example in an air conditioning plant room provided that fresh outside air can be supplied

to the cooler and that the exhaust air is discharged directly to the exterior of the building.

IT IS ESSENTIAL THAT THE PLANT BE SO ARRANGED THAT THE CLIMATE WIZARD EX-

HAUST AIR CANNOT BE RECIRCULATED INTO THE AIR INLET OF THE COOLER.

Examples of typical designs:

1. Climate Wizard installed on roof and ducted into Air Conditioning plant room below.

A-C UNIT

Fresh air

intake

Return air

Supply air

to building

Alternative

site for CW

Fresh air louvres to be

closed when Climate

Wizard installed on roof

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

COLD FRONT COOLING (cont’d):

Examples of typical designs (cont’d):

Climate Wizard installed on roof and ducted directly into fresh air intake of Air Conditioner in

plant room below.

Two examples of Climate Wizard Cold Front Cooling installations in Australia

A-C UNIT

Fresh air

intake

Return air

Supply air

to building

Alternative

site for CW

Barometric

damper

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

COLD FRONT COOLING (cont’d):

The Barometric Damper may be controlled by natural pressure variations or, if motorised, by the

control system, depending on whether the Climate Wizard is required to function or not.

Sizing:

Cold Front Cooling means pre-cooling warm (hot) fresh air that is required by a refrigerated

Air Conditioning plant. Since Climate Wizard cools fresh air down to almost the dewpoint and does

not add any moisture, it is the ideal product to pre-cool the fresh air. This low-cost pre-cooled air

creates immediate energy savings for the building and it reduces the load on the refrigeration equip-

ment, thereby extending the life of the plant and saving capital outlay. It also enables load to be

removed from the existing over-stressed electrical power infrastructure, and especially so in heat-

wave conditions.

First ascertain the quantity of fresh air of which the refrigerated Air Conditioning plant is capable.

Match this quantity to the quantity of air of the Climate Wizard will deliver. The maximum supply

airflow of the 2 Climate Wizard models is:

CW-H10

approx. 800 L/sec at 80 Pa

CW-H15

approx. 1100 L/sec at 80 Pa

For customers who need to know the energy saving, the following table provides the Cooling Effect

in KW of each model at various ambient conditions.

Further reductions in energy consumption can be achieved when a portion of the return air is ducted

via the Climate Wizard.

Maximising the use of return air can also open up further very viable possibilities for Climate Wizard

in localities with extremely high dewpoint temperatures.

These are special cases and lie outside the scope of this Guide.

INLET DRY-BULB TEMPERATURE -

Tdew

20 26 32 38 44 50

CW-H10

12.0 16.3 21.0 25.4 29.9 34.4

CW-H15

16.5 22.5 28.8 34.9 41.1 47.4

CW-H10

10.0 14.7 19.5 24.1 28.7 33.5

CW-H15

13.8 20.2 26.8 33.1 39.5 46.0

CW-H10

7.6 12.4 17.5 22.2 27.3 32.2

CW-H15

10.4 17.0 24.1 30.6 37.5 44.2

CW-H10 4.3

9.4 14.8 20.1 25.2 30.5

CW-H15

6.0 13.0 20.3 27.6 34.6 41.9

CW-H10

5.4 11.2 16.9 22.6 28.3

CW-H15

7.4 15.4 23.3 31.1 39.0

Table of Cooling Effect for Climate Wizard - KW

COLD FRONT COOLING

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

L1 L2 L3

MAIN SUPPLY

3 POWER IN

MAIN P.C.B.

6 SALINITY PROBE

7 MOTOR CONTROL SIGNAL

9 WATER INLET SOLENOID

10 CHLORINATOR LINK

8 WALL CONTROL

1 MOTOR CONTACTOR COIL

4 PUMP LINK

2 FUSE T15A

5 6

5 DRAIN VALVE

FAN CONT

ACTOR

INTERFACE P.C.B.

14 15 16 17

11 INTERFACE BOARD LINK

5 A1

6 A2

FAN

12 12

13 13

12 PUMP X 2

13 CHLORINATOR X 2

14 COOL/VENT INPUT

15 ERROR SIGNAL OUTPUT

16 REMOTE ON/OFF INPUT

17 FAN SPEED INPUT 0-10Vdc

ELECTRICAL WIRING DIAGRAM FOR CLIMATE WIZARD

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

BAR

C PRE

SSUR

: 101.325 k

PSYCHRO

MET

CHA

l Temper

atur

I Un

its

VEL

-2

-1

-5

101

DRY

BUL

ATUR

E -

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DEW

T T

TURE

- °

t by

: H

NDS

, www.

sof

70%

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-5

ATU

- °

HUMID

Y RAT

- GRAM

S M

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TURE PE

R KILO

DRY AIR

BAR

C PRE

SSUR

: 101.325 k

PSYCHRO

MET

CHA

l Temper

atur

I Un

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t by

: H

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20 26

INLET

LB T

URE

E WI

RD -

EVA

P -

ppl

y te

- 2

Lin

es of sup

y temperature for

nt inlet

tem

tures

. F

intermedia

te supply

tempera

tures,

oximate the sup

y temp

erature

between a

dja

cent

lin

PROVISIONAL

LINES OF SUPPL

IR TEMPER

URE

ate

ard

- sup

r temp - 15

g C

This Guide is subject to change without notice.

REVISED AND PUBLISHED - 13 OCTOBER 2009

APPLICATION GUIDE

Models CW-H10, CW-H15

Indirect Evaporative Air Conditioner

CONTROL SCHEMES:

Climate Wizard coolers are supplied from the factory with one (1) Wall Control and a 20m control
cable. This makes it possible for the Cooler to be controlled independently and automatically from
the zone to which it is delivering cool air. No additional equipment is required. The Wall Control
incorporates a thermostat that regulates fan speed to maintain indoor temperature within + 0.5

C of

the set temperature. See table of Parameters and values

Climate Wizard Coolers are also supplied with an ‘Interface PCB’ that can be connected to a remote
BMS control system.

When either control option is being used, the inbuilt Climate Wizard water management and fault
monitoring features are fully operational. See table of monitored variables and fault values

The Climate Wizard control scheme incorporates some Parameters that can be altered to other set-
tings if the default settings are not suitable.

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