Sanyo De Users Manual

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Making the World a More Comfortable Place
SANYO’s absorption technology is in evidence in
many aspects of our daily lives, from where we do
business to the places we choose to relax.

Type DE (Direct-fired Chiller/Heaters)
Type NE (Steam-fired Chillers)
Type LE (Hot water-fired Chillers)

For the safety sake
Before operating the unit
*To use the unit properly before operating, be sure to carefully read the operation manual.
*Installation should conform to regulations and laws such as Building Standard Act, Fire Laws, Air Pollution
Prevention Laws and Labor Safety and Sanitary Law, and to any other applicable regulations and laws.

On the installation
*Read the installation manual carefully before carried-in and installing the unit.
*Carried-in and works of installation, foundation, wiring, piping, interlocks and thermal insulation are involved.
Please contact your agency with any questions relating to these issues. In case such works are inadequate, it may
cause overturn, electric shock, water and fuel leakage, scalding, fire and so forth.
*Please consult your agency when the work of flue, exhaust and in-take air duct, and chimneys are required. In
case such works are inadequate, it may cause scalding, fire and oxygen deficiency.
*Waterproof work of the foundation for installing the unit and drainage ditch are required in order to prevent
wetting surrounding equipment.
*Adequate space surrounding the unit is needed for maintenance work. Such space is indispensable for safe work
and avoiding injuries.

For maintenance
*Periodical maintenance, in addition to daily inspection, is required. If it is improper in maintenance, it may cause
fire, electric shock and scalding.
*Please consult the service agency to obtain professional guidance.

Avoiding hazardous places
*Keep the units away from inflammable dangerous substance such as gasoline and thinner and erosive gas which
may result in a fire.

ISO 9001
JISZ 9901

QS Accreditation
R004

File No. : JQ116A
Date
: October 13, 1997

ISO 14001
JISQ 14001

EMS Accreditation
RE011

File No. : JE011A
Date
: November 23, 1998

SANYO Electric Air Conditioning Co.,Ltd.
International Business Division
Overseas Sales & Marketing Dept.
1 Otsuki-Cho, Ashikaga-City,
Tochigi 326-8534, Japan
Telephone : +81-284-44-3222
Facsimile : +81-284-44-3138
http://kuchosys.sanyo.co.jp/eng/
SANYO Electric Trading Co.,Ltd.
1-10 Ueno 1-chome,Taito-ku, Tokyo 110-8534 Japan
Telephone : +81-3-3837-6266
Facsimile : +81-3-3837-6389
©2000SANYO Printed in Japan ’00 7 IM0.5

SANYO Electric Co.,Ltd
SANYO Electric Trading Co.,Ltd.

SAE-2002

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Keeping the nature beautiful for the future generations....
That is the common wish of the human race.

The biggest cause of environmental deterioration, such as global warming, are CO2 emissions
due to energy consumption, and countermeasures are being undertaken on a worldwide
scale.

CONTENTS

Every effort is being made to improve the environmental situation, from an institutional level
to an individual level. Today companies are required to live in harmony with environment.
SANYO has been a leader in the field of large type absorption chillers, making use of
absorption technologies accumulated over the years, and contributes to the development
of various types of energy saving systems and improving energy systems in air conditioning
businesses.

Introduction
Absorption cycle
Direct-fired chiller / heaters
Steam-fired chillers
Hot water-fired chillers
Utility

2
11
15
43
63
81

1

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Introducing the SANYO absorption chillers:

SANYO absorption chillers highlights

SANYO, as a leading company in this field more then 20 years in domestic market in Japan, now brings the high efficiency of double-effect steam
chillers and double-effect direct-fired chiller/heaters to the world market.

With the ever-changing requirements of building owners and continual
changes in building designs, SANYO introduces to the world market the
next generation of high efficiency gas and steam fired, double-effect absorption chillers.

The SANYO absorption chillers and chiller/heaters give building owners
a better solution for many new and retrofit applications. Installation of a
direct-fired chiller/heater eliminates the need for the boiler required with
conventional installations. This reduces the initial cost of the system, making a SANYO chillers/heaters competitive with conventional chiller/boiler
system.
The SANYO absorption chillers and chiller/heaters offer a number of other
advantages:
• Excellent for peak shaving during high electrical demand periods.
• Replaces existing inefficient single-stage absorption chillers without an
expensive electrical service upgrade.
• Has the ability to tie into district steam systems with an efficient doubleeffect chiller.
• Allows diversification of critical cooling requirements. Critical cooling
loads are met with minimal electrical power input with gas or steam
fired chillers.

• Allows for smaller emergency generators to be utilized since the electrical load associated with an absorption chiller is minimal when compared to an electrical driven chiller.
• Ozone safe, CFC free. Cooling requirements are met without chlorine
based refrigerants.
• Reduces contribution to global warming. Minimizes global impact by
greatly reducing electricity consumption and eliminating the use of
greenhouse gases.
• Low noise and vibration. The absorption chiller does not utilize a large
motor-compressor, and this leads to quiet, trouble-free operation.
• Small footprint. The high efficiency associated with the double-effect
chiller has reduced the space required for installation.
SANYO is the industry leader in supplying compact units.
• CE marking is applicable if requested.

In many parts of the world, the cost of electricity and penalties administered through demand limits, inverted rates, time-of-day rates, ratchet
clauses, etc., have forced the need for alternative chiller systems to be
developed.

Electrical peak power shaving
By using a combination of electric driven and absorption chillers for air
conditioning loads, a central plant can take advantage of lower base electricity rates during times of high electricity demand. The absorption unit is
used to shave peak power demands during summer operation, while
operating the electric chiller below the assigned demand limit, avoiding
costly demand charges and saving money all year-round.

With the aging of the world power plants and environmental and financial
concerns blocking construction of new ones, many areas are faced with
extremely high demand charges and escalating electricity costs. In these
areas, the entire cooling load can be handled by SANYO absorption units,
allowing the allotted electricity to be used elsewhere in the building where
there are no practical alternatives.

Heating and cooling operation
With the SANYO DE direct-fired double-effect chiller/heaters, the unit
can be used for heating during winter months without additional cost of
extra controls. In many applications, the chiller/heaters can replace a

traditional electric chiller and boiler design combination, with the advantage of reducing machine room floor space and giving up to 40% savings on the system start up cost in many cases.

Double effect absorption cycle

Nomenclature

Both the steam and direct-fired SANYO chillers utilize a double-effect
absorption cycle resulting in unit COP's of 1.0 for the direct-fired chiller/
heaters and 1.2 for the steam-fired chillers. This high efficiency design
has reduced the input energy of the original single stage-absorption chill-

TSA -- DE -- 11

ers by up to 30%. SANYO's state-of-the-art double effect design has also
allowed the unit to be reduced in size as compared to previous generation units, making SANYO the industry leader in efficiency and space
utilization.

Many applications
Unit Type
DE=Double effect, direct-fired
NE=Double effect, steam-fired
LE=Single effect, hot water-fired
Capacity Code

The SANYO offers the broadest range of equipment and operating conditions in the entire industry: 23 discrete unit sizes from 100 tons to 1500
tons incorporating either direct-fired or steam-fired generators. With natural
gas as one of the heat sources for direct-fired types, the customer can be
assured of a fuel that is clean burning and environmentally friendly.
The SANYO steam-fired, double-effect chiller satisfies the building owner's
need for high efficiency replacement/retrofit units plus an optimal solu-

tion to new high pressure steam chilling systems. A SANYO double-effect steam chillers is the perfect complement to a district steam heating
system, offering single source heating and cooling.
The SANYO hot water-fired chillers is applicable not only combined in
Co-generation system but utilized the waste heat as a driving heat source
in the various applications.

No CFCs
Direct-fired chiller/heaters

Steam-fired chillers

2

In addition to the extensive list of design benefits above, the SANYO
units are completely ozone safe/no CFC's or HCFC's.
All cooling is achieved utilizing a refrigerant with a proven track record,
ample supplies and environmentally safe: namely, water!

Additionally, since an absorption cycle is accomplished without a large
motor-compressor drive arrangement, the customer can be assured of
quiet, trouble-free, ultra-low vibration operation.

Hot water-fired chillers

3

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Component identification

Chiller features

Low temperature generator
Control panel

Expert function by self-diagnosis
High temperature generator

Expert function is provided to monitor operating conditions, predict chiller
information and maintain stable operation.

Condenser

Generator
sight glass

♦ Prediction information
Graph 1. Fouling of heat transfer tubes in cooling water system

Fouling indicator

8

Maintenance
judgement line

Maintenance zone

6
4

Notice zone
Normal line

2

Purge pump

Normal zone
0
0

20

40
60
Cooling load factor(%)

80

100

Graph 2. Tendency of absorbent concentration
8

Abnormal stop zone

Absorber

Condenser

Gas train

Chilled water inlet

Palladium cell heater

Concentration indicator

7

Cooling water outlet

Maintenance zone
at cooling water 27°C

6

Maintenance zone
at cooling water 31°C

5
4

Normal line at
cooling water 31°C

3
2

Normal line at
cooling water 27°C

1
0

Absorber

0

Evaporator

20

40
60
Cooling load factor(%)

80

100

Graph 3. Vacuum condition monitoring
Diluted solution

Chilled water outlet

Absorbent pump
Refrigerant pump

Pressure rising indicator
of storage tank

1.0

Purge nozzle

Maintenance zone
0.6

Pd cell

Notice
zone

Storage
tank
Pressure
sensor

.

Normal zone
0
0

20

60

80

100

Storage ratio(%)

Burner
Cooling water inlet

4

5

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

SANYO control system

Display and control board

The SANYO control system surpasses other proportional only control
systems available today. The digital PID(proportional, integral, and differential) control maximizes unit performance by maintaining a ±0.5°C
deviation in leaving chilled water temperature from setpoint. Proportional
controls typically can only maintain a ±1°C deviation from setpoint. The
controller's innovative design also incorporates the ability to start and
stop the system chilled/hot and cooling water pumps. During shutdown
these pumps are sequenced to insure a complete dilution cycle.
The leaving chilled water temperature is measured every five seconds
and fuel input is changed according to the gradient of the leaving chilled
water temperature curve. System temperatures, setpoints, and opera-

tional records are displayed along with indicator lights for the chiller, pumps
and burner.
The SANYO control system offers its users self-diagnostics by constantly
monitoring the chiller's status and will automatically shut the chiller down
should a fault occur. The cause of shutdown will be retained in memory
and can be displayed for immediate operator review. The controller's
memory will also retain and display the cause of the last three system
fault conditions. This method of retaining fault conditions is extremely
useful for maintaining an accurate record of unit performance and fault
history.

Table 2. Typical operation data

Temperature

High temperature generator
Exhaust gas
Chilled water
Cooling water
Hot water

Operation hours

Chiller / heater
Combustion
No.1 Absorbent pump

Message

Refrigerant pump
Low level vacuum (Notice / Caution)
High concentration (Notice / Caution)

Display and control board

Foul tube of cooling water (Notice / Caution)
High cooling water temperature (Notice / Caution)
Foul chamber (Notice / Caution) (only for oil-fired types)

■ Display(normal)
Set point
ON-OFF

Chilled water
Hot water
Chiller / heater
Burner

SETTING

H Generator temp

STOP RUN
CHILLER

1 4 9 . 9° C

COOLING

BURNER

HEATING

ALARM

BUZZER STOP

REF PUMP
#1 ABS PUMP
#2 ABS PUMP

MODE
OPERATION

REMOTE

STOP

LOCAL

PURGE PUMP
BURNER BLOWER

Table 3. Typical alarm data

Operation alarm

Table 1. Indication lamp

symbol

Name
Running(Operation) indication lamp
Stop indication lamp
Alarm indication lamp
Bunner combustion indication lamp
Cooling / Heating indication lamp
Remote / Local select button with lamp
Mode select button with lamp
Data display

Sample 1.

Lamp color
Red
Green
Orange
Red
Orange
Red
Red
LCD

Exhaust gas temp
CH W temp
12.3

236°C
7.1°C

Sample 2.

Notice : Low level vacuum
Caution : Foul tube of COW

Others

Generator solution level
Thermal relay of No.1 Absorbent pump
Thermal relay of No.2 Absorbent pump
Thermal relay of burner blower
Thermal relay of oil pump
Thermal relay of refrigerant pump
Interlock of chilled water pump
Interlock of hot water pump
Interlock of cooling water pump
Interlock of system
Generator pressure
Chilled water flow rate
Hot water flow rate
Generator temperature
High concentration
Purge tank pressure sensor
Solution temp sensor
Condensed refrigerant temp sensor
Generator temp sensor
Chilled water sensor
Hot water sensor
Cooling water sensor
Refrigerant temp sensor
Power failure

6

7

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Speedy digital PID control

Optimum dilution cycle period can be shortened substantially according to microprocessor monitoring

The introduction of new digital PID control to the E-model stabilizes the
chilled/hot water temperature with high accuracy than the previous C
model. It quickly responds to the load fluctuation and supplies stable

chilled/hot water temperature. It is suitable for air-conditioning intelligent
buildings which require sophisticated control.

This results in the appropriate dilution cycle operating hours.
Graph 6. Dilution cycle (DE)
Operation
signal

ON
OFF

Chiller /
heater

ON
OFF

Cooling water
pump

ON
OFF

Chilled / hot
water pump

ON
OFF

Control of high temperature generator by solution level control
With the new control system, solution flow rate is precisely controlled so
that the solution level of the high temperature generator is maintained at
a certain level.
Frequency of maneuvering has been substantially reduced with the syner-

getic effect of absorbent pump inverter control. This enables the supply
of a more stable temperature for chilled/hot water compared to conventional models.

Graph 4. Operating result by speedy PID control (gas-fired)
Continuous operation of E model absorbent pump
Absorbent
pump

T1

1 min

Stop signal

OFF

Chilled water inlet temperature
12

T2
Chiller stop

E model

Conventional pump
ON-OFF(3 times)

16

Temperature
(°C)

1 min

ON

T1: Count the time until generator temperature goes down to 120°C
(About 4 to 20 minutes)
T2: Decide the time by generator temperature.
(About 5 to 10 minutes)

Conventional

Load change
E model

Temperature
setting 7°C

Note :
1) Dilution time in cooling operation is minimum 6 minutes
to maximum 15 minutes.
2) Dilution time in heating operation is 5 minutes.
Unit proper and hot water pump stop in 5 minutes after stop signal is lit.
3) Stop the air conditioning system after complete stop of chiller.

Chilled water outlet temperature

8

Conventional

4

Load factor 80%

Load factor 40%

0
0

5

10

15

20

25

30

35

40

Time(minutes)

Purge system
The high performance purge system maintains the required operating
pressure, preserves the chiller performance characteristics, minimizes
chiller maintenance as one purge time operation per season in case there
are four(4) seasons.

Saving energy with the inverter
Balancing the load and flow rate with the absorbent pump’s inverter control enables efficient and energy saving operation. As a result, it saves
the input energy and electric power consumption, running cost by 5%
compared to none-inverter control.

Graph 7. Start up chart (NE)

ex.

1. Chilled water outlet temperature 7°C constant
2. Cooling water inlet temperature

80
Non-inverter
control
60

Load factor(%)

Temperature(°C)

100

32

50

27

30
40
E model

25

15minutes
30minutes

Variable(5-30minutes)

140
Steam consumption

Temperature (°C)

Fuel consumption ratio(%)

100

100
40

Steam control valve
opening ratio

80

Cooling water inlet temperature

60

30

20

20

120

Chilled water inlet temperature

10
0

20

40

60

80

Cooling load factor(%)

100

Setting
7°C

40

Steam control opening ratio (%)

Table 4. Test condition

Steam Consumption ratio (%)

Graph 5. Running cost curve

Steam valve opening control
Open angle of steam control valve at starting is controlled
by means of the three steps, resulting that the excessive
amount of steam and also the consumed time to reach the
desired level became less than the previous model.
Of course, by means of adjusting the open speed of steam
control valve at the second step and the third, it is possible
to set up to the most suitable condition met to the site auxiliary equipment.

20
Chilled water outlet temperature

0
0

5

78
10

15

20

25

30

35

40

Time(minutes)

8

9

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

The absorption cycle

High temperature generator safety control
When the temperature of the high temperature generator is higher
than a certain temperature level, the steam consumption is controlled to
sustain safe operation.

Together with the cooling water safety control and absorbent crystallization protection control, the safety operating zone is broadened.

100

Steam consumption ratio
80

Steam consumption
control for 10 minutes
60
160
40

150

Temperature of
high temperature generator

20

Steam consumption ratio(%)

Temperature of high temp. generator(°C)

Graph 8. Safety control chart

0

140

0

5

10

15

20

25

30

35

Time(minutes)

Expansion of safety operating zone

The absorption cooling cycle, like the compression refrigeration cycle, utilizes the latent heat of evaporation of a refrigerant to remove heat from the
entering chilled water. The compression refrigeration system uses a chlorine
based refrigerant and a compressor to transport the refrigerant vapor to be
condensed in the condenser. The absorption system, however, uses water
as the refrigerant and an absorbent to absorb the vaporized refrigerant. Heat
is then applied to the solution to release the refrigerant vapor from the absorbent. The refrigerant vapor is then condensed in the condenser.

Figure 1. Simplified absorption cycle
Refrigerant vapor
Condenser

Generator

Cooling
water

The basic absorption cycle (see Figure 1) involves generator, condenser,
evaporator and absorber with refrigerant (liquid) and lithium bromide as the
working solutions. The generator utilizes a heat source (burner, steam or hot
water) to vaporize the diluted lithium bromide solution. The water vapor that
is released travels to the condenser where it is condensed back into a liquid,
transferring the heat to the cooling tower water. Once condensed, the liquid
refrigerant is distributed over the evaporator tubes, removing the heat from
the chilled water and vaporizing the liquid refrigerant. The concentrated lithium
bromide solution from the generator passes into the absorber, absorbs the
refrigerant vapor solution from the evaporator and dilutes itself. The diluted
lithium bromide solution is then pumped back to the generator where the
cycle is started again.

Liquid
refrigerant

Concentrated
solution

Heat source

Cooling water

Chilled water

Evaporator

Absorber

Absorbent pump

Double effect type

This ensures quick response to rapid changes and maintains stable
operation.
Safety operating zone is between 19°C and 34°C of cooling water
temperature. (In case cooling inlet water temperature is 32°C)

The generator section is divided into a high temperature generator and a low
temperature generator. The refrigerant vapor produced by the high temperature generator is used to heat the LiBr solution in the low temperature generator in which the pressure (hence the boiling point) is lower. Thus the heat
of condensation is effectively utilized.

Graph 9. Safety operating chart

Figure 2. Double effect absorption cycle
Refrigerant vapor
Refrigerant vapor
Condenser

Hight temperature
generator

Low temperature
generator

Maximum input(%)

100
Cooling
water

80

Liquid
refrigerant

Intermediate
solution

Evaporator

60

Concentrated
solution

Chilled water

40

Absorber
Cooling water

20
0

Heat source

(Variable from 20°C to 33°C)
★--13

★--4

★

★+2

Diluted solution
Absorbent pump

Cooling water inlet temperature(°C)

Crystallization protection
Microprocessor observes the absorbent concentration. Steam supply is
stopped and the unit is recovered to the normal operation when the concentration is over certain limit, to prevent the crystallization of absorbent.

As mentioned in the single effect type, the refrigerant vapor produced by the
low temperature generator is sent to the condenser to become liquid refrigerant. On the other hand, the refrigerant vapor produced by the high temperature generator turns to water as it releases heat to the intermediate LiBr
solution. This happens inside the heat transfer tubes in the low temperature
generator. The refrigerant vapor produced by both low and high temperature
generators turns to refrigerant liquid and mixes in the condenser before returning to the evaporator.

Figure 3. Detail of generator
Refrigerant vapor to condenser
Refrigerant vapor

Low temperature generator

High temperature generator

Space saving by compact design
With the high performance heat transfer tubes, weight and size is reduced by 10% of the previous C model.

Heat source
Condensed
refrigerant
Intermediate solution

Concentrated solution
Diluted solution

10

11

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Absorption cooling cycle
The SANYO super absorption machine applies the same basic absorption
principles but enhances the cycle by adding additional heat exchangers and
a second generator to recover all the available energy of the system and
maximize the unit's COP (see Figure 2).

The absorption cycle operates in a vacuum. This permits the liquid refrigerant to boil at a lower temperature, transferring the latent heat of evaporation
from the entering chilled water to cooling the chilled water.
Below is a component description of the absorption cycle with reference to
the D¨uhring diagram shown in Graph 10 at page 16.

Figure 4. Lower shell
Liquid refrigerant

Concentrated solution

Chilled water outlet

Chilled water inlet
Evaporator

D. High temperature generator section
The diluted solution from the heat exchangers is heated by the burner or
steam upon entering the high temperature generator and separates into refrigerant vapor and intermediate solution (see Figure 6).
Line D' to E of Graph 10 shows the heating and concentration process in the
high temperature generator. The diluted solution at point D' is heated at a

constant concentration to point D, where the refrigerant vapor is released
and the solution becomes concentrated to 60.8% (point E, Graph 10).
Following the intermediate solution, Line E to F' of Graph 10 shows heat
transfer from the intermediate solution to the diluted solution in the high temperature heat exchanger (see Figure 5).

E. Low temperature generator section
The refrigerant vapor from the high temperature generator passes through
the heat transfer tubes of the low temperature generator (see Figure 7). The
intermediate solution from the high temperature heat exchanger passes to
the low temperature generator where it is heated by the refrigerant vapor.
The heated intermediate solution releases additional refrigerant vapor and
becomes concentrated to its final level. The condensed refrigerant in the
heat transfer tubes and the refrigerant vapor of the low temperature generator section then flows to the condenser.
Line F' to F to G of Graph 10 shows the concentrating process in the low

temperature generator. The intermediate solution enters the low temperature generator and is heated by the refrigerant vapor from the high temperature generator. Additional refrigerant vapor is released and the intermediate
solution becomes concentrated into its final concentration level of 63.7%
(point G, Graph 10).
Following the concentrated solution, Line G to A' of Graph 10 shows the
process of temperature reduction in the low temperature heat exchanger by
heat transfer to the diluted solution (Figure 5). Line A' to A shows the temperature reduction of the concentrated solution entering the absorber.

Absorber

Figure 6. High temperature generator
Exhaust gas
Diluted solution

Refrigerant vapor
Refrigerant pump
Absorbent pump

Cooling water inlet

A. Evaporator section
Liquid refrigerant entering the evaporator is dispersed uniformly on the chilled
water evaporator tubes (see Figure 4).
The low pressure of the evaporator causes the refrigerant to be boiled, thus

vaporizing the refrigerant and causing the latent heat of the vaporized refrigerant to cool the chilled water.

B. Absorber section
Concentrated solution entering the absorber is dispersed uniformly on the
cooling water tubes (see Figure 4). The concentrated solution in the absorber
section absorbs the refrigerant vapor from the evaporator section of the vessel.
Cooling water flowing through the absorber section heat transfer tubes extracts the heat generated by this absorption process. The concentrated solution, after absorbing the refrigerant vapor from the evaporator, becomes a
diluted solution.

Line A to B of Graph 10 describes the process in the absorber. The concentration of the lithium bromide solution entering the absorber section is 63.5%
(all concentration levels and temperatures are approximate). The lithium bromide solution then absorbs the refrigerant vapor from the evaporator section
and is cooled from 50°C to 37°C by the cooling water. This causes the bromide solution to become diluted and it then leaves the absorber at a concentration of 57.7% (point B, Graph 10).

C. Low and high temperature heat exchangers
The diluted solution, after leaving the absorber section, passes through the
low temperature heat exchanger (see Figure 5) where it is heated by the
concentrated solution. The diluted solution then passes through the high temperature heat exchanger where it is further heated by intermediate solution.
The intermediate and concentrated solutions are cooled by the diluted solu-

tion. This cooling process of the concentrated solution allows for greater absorbing power due to its lower temperature.
Line B to C to D' of Graph 10 shows the temperature rise of the diluted
solution in the low and high temperature heat exchangers.

High temperature generator

Burner

Intermediate solution

Diluted solution

Figure 5. Heat exchangers
Concentrated
solution

Intermediate
solution

Diluted solution
Low temperature
heat exchanger

12

High temperature
heat exchanger

13

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Direct-fired chiller / heaters
F. Condenser section
The refrigerant vapor from the low temperature generator is condensed on
the cooling water heat transfer tubes of the condenser (see Figure 7). The
cooling water from the absorber flows through the condenser and removes
the heat of condensation from the refrigerant vapor from the low temperature

generator section and is rejected to the cooling tower.
The condensed (liquid) refrigerant then flows to the evaporator where the
cycle starts again.

G. Refrigerant path and flow
In the high temperature generator, the heat source separates the refrigerant
from the lithium bromide solution.
The lithium bromide solution follows line D to E of Graph 10.
Line D to H of Graph 10 follows the refrigerant path and illustrates the change
of refrigerant vapor to liquid as it passes through the low temperature generator. The refrigerant then flows to the condenser (line H to I) where additional heat is removed. In the low temperature generator additional refrigerant is released from the lithium bromide solution (line F to G); this released
refrigerant travels to the condenser (line F to I) where it is condensed into a

liquid. Point I represents the combination of liquid refrigerant from both the
low temperature generator and the condenser. The liquid refrigerant flows
into the evaporator where it mixes with evaporator refrigerant and is pumped
to the evaporator's dispersion trays (line I to J). The refrigerant is dispersed
on the evaporator heat transfer tubes and vaporizes; the vapor is absorbed
by the concentrated solution in the absorber causing the bromide solution to
become diluted (line J to B). The diluted solution flows to the low temperature
heat exchanger (line B to C) where the cycle is repeated.

Figure 7. Upper shell
Condenser

Low temperature generator

Refrigerant vapor
Intermediate solution

Concentrated solution

Schematic cooling cycle
Figure 8. Direct-fired chiller / heaters

Heat sink 1.8

Waste heat 0.2

High Temperature Generator
Liquid refrigerant

Cooling water

Condenser

Cooling Water

Low Temperature Generator
Exhaust Gas

Burner

Chilled Water

Evaporator

 Heat Exchanger 

Absorber

Fuel

Cooling Water

Refrigeration capacity 1.0
Conc. solution

14

Int. solution

Dil. solution

Heat 1.0
Liq. refrigerant Vap. refrigerant Cooling water

Chilled water

Heat

15

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Heating cycle

Cooling cycle

In the absorption heating cycle (Figure 10), the unit is essentially acting as a
boiler. Diluted solution is heated in the high temperature generator releasing
refrigerant vapor from the absorbent.
The refrigerant vapor flows to the absorber/evaporator and condenses on
the heat transfer tubes of the evaporator. The water through the evaporator

Figure 9. Cooling cycle
Condenser

Exhaust Gas

Low Temperature Generator

Cooling Water outlet

Absorber

heat transfer tubes removes the sensible heat of the condensed refrigerant
and transfers the heat to the hot water loop. The condensed refrigerant is
mixed with the intermediate solution creating diluted solution. The diluted
solution is pumped back to the high temperature generator where the cycle
is started again.

Figure 10. Heating cycle
High Temperature
Generator

A Valve
Evaporator

Condenser

Exhaust Gas

Low Temperature Generator

Chilled Water
Absorber

Burner

High Temperature
Generator

A Valve

C
Valve

Evaporator

Hot Water

Purge Unit

Refrigerant Pump
Absorbent Pump

Burner

Heat Exchanger

Cooling Water Inlet

Concentrated Solution

Liquid Refrigerant

Chilled Water

Intermediate Solution

Refrigerant Vapor

Open

Diluted Solution

Cooling Water

Close

C
Valve

Refrigerant Pump

Purge Unit

Heat Exchanger

Absorbent Pump
Intermediate Solution

Liquid Refrigerant

Graph 10. D¨uhring diagram

Open
Diluted Solution
% %
40 45

0%

H

%
50

%
55 D

%
60
E

760
700
%
68
500

Temperature of refrigerant (°C)

400
300

D'

70
60

ta

50

ne
Li

I

40

of

C

s
on

nt

F

n
Co

ce

ra
nt

tio

ns

200
160
100
80

F'
G

80
40

C
30

30
20

20

10
8

10
J

16

Close

%
65

90
80

Refrigerant Vapor

Pressure (Torr)

100

0

Hot Water

0

B
10

20

30

40

A
50

A'
60

5
70
80
90
100 110
Temperature of absorbent (°C)

120

130

140

150

160

170

17

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Double effect direct-fired absorption chiller / heaters
This is a high efficient-double effect absorption chiller / heaters using combustion heat of gas or oil as the driving
heat source.
It is able to take chilled water of 7°C while hot water of 55°C is in heating mode.
◆ DE Model Specification
Model（TSA-DE-＊＊）
Refrigeration

DE-71

DE-72

DE-73

DE-81

DE-82

1,200

1,300

1,400

1,500

4,220
3,036

4,571
3,289

4,923
3,542

5,274
3,795

3,824

4,119

4,413

（USRT）

100

120

150

180

210

240

280

320

360

400

450

500

560

630

700

800

900

1,000

1,100

352

422

527

633

738

844

985

1,125

1,266

1,407

（Mcal/h）

253.0

303.6

379.5

455.4

531.3

607.2

708.4

809.6

910.8

1,012

1,582
1,138.5

1,758
1,265

1,969
1,416.8

2,215
1,593.9

2,461
1,771

2,813
2,024

3,165
2,277

3,516
2,530

3,868
2,783

kW

294

353

441

530

618

706

824

941

1,059

1,177

1,324

1,471

1,647

1,853

2,059

2,353

2,648

2,942

3,236

3,530

kW

DE-24

DE-31

DE-32

12 → 7℃
（Fouling factor=0.088m2 ℃/kW
（0.0001m2h℃/kcal）
・Max.working pressure 784kPa
（8 kgf/cm2G）
）

12 → 7℃
（Fouling factor=0.088m2 ℃/kW
（0.0001m2h℃/kcal）
・Max.working pressure 784kPa
（8 kgf/cm2G）
）
m3/h

60.5

72.6

90.7

109

127

145

169

194

218

242

272

302

339

381

423

484

544

605

665

726

786

847

907

（mH2O）

6.5

6.6

8.0

8.3

7.5

7.9

5.1

5.5

5.8

6.1

5.2

5.5

4.6

6.2

8.1

5.7

7.6

9.9

6.2

7.8

9.6

7.8

9.5

kPa

64

65

78

81

74

77

50

54

57

60

51

54

45

61

79

56

74

97

61

76

94

76

4

inch
m3

0.12

0.13

5
0.15

0.17

8

6

0.22

0.24

0.28

0.30

0.34

0.36

0.46

0.48

10

0.65

0.71

0.77

0.99

93

12

1.06

1.13

1.41

1.51

14
1.61

1.83

1.94

（0.0001m2h℃/kcal）
・Max.working pressure 784kPa
（8 kgf/cm2G）
）
50.8 → 55.0℃
（Fouling factor=0.088m2 ℃/kW

（0.0001m2h℃/kcal）
・Max.working pressure 784kPa
（8 kgf/cm2G）
）
50.8 → 55.0℃
（Fouling factor=0.088m2 ℃/kW
m3/h

60.5

72.6

90.7

109

127

145

169

194

218

242

272

302

339

381

423

484

544

605

665

726

786

847

907

（mH2O）

6.5

6.6

8.0

8.3

7.5

7.9

5.1

5.5

5.8

6.1

5.2

5.5

4.6

6.2

8.1

5.7

7.6

9.9

6.2

7.8

9.6

7.8

9.5

kPa

64

65

78

81

74

77

50

54

57

60

51

54

45

61

79

56

74

97

61

76

94

76

inch

Holding water volume

m3

Cooling water system

4
0.12

0.13

5
0.15

0.17

8

6

0.22

0.24

0.28

0.30

0.34

0.36

0.46

0.48

10

0.65

0.71

0.77

0.99

93

12

1.06

1.13

1.41

1.51

14
1.61

1.83

1.94

32 → 37.5℃
（Fouling factor=0.088m2 ℃/kW
（0.0001m2h℃/kcal）
・Max.working pressure 784kPa
（8 kgf/cm2G）
）

（0.0001m2h℃/kcal）
・Max.working pressure 784kPa
（8 kgf/cm2G）
）
32 → 37.5℃
（Fouling factor=0.088m2 ℃/kW
m3/h

100

120

150

180

210

240

280

320

360

400

450

500

560

630

700

800

900

1,000

1,100

1,200

1,300

1,400

1,500

（mH2O）

3.9

4.4

6.5

7.7

5.6

6.2

10.9

12.1

8.7

9.4

10.3

11.2

7.1

9.4

12.1

8.5

11.2

14.4

9.4

11.8

14.5

12.2

14.7

kPa

38

43

64

75

55

61

107

119

85

92

101

110

70

92

119

83

110

141

92

116

142

120

144

Flow rate

5

inch

Connection (JIS)
Holding water volume
Kind of fuel

liter

0.31

0.34

6
0.38

0.42

10

8

0.53

0.58

0.63

0.69

0.89

0.95

12

1.11

1.19

1.87

14

2.01

2.14

2.79

16

2.97

Natural gas

Natural gas

3,000
29.4

3,000
29.4

（mmH2O）
kPa

3.15

3.67

3.90

4.11

4.51

4.76

（Mcal/h）

300

360

450

540

630

719

840

960

1,080

1,199

1,350

1,496

1,683

1,892

2,101

2,398

2,695

3,003

3,300

3,597

3,905

4,202

4,499

kW

349

419

523

628

733

836

977

1,116

1,256

1,394

1,570

1,740

1,957

2,200

2,443

2,788

3,134

3,492

3,837

4,183

4,541

4,886

5,231

（Mcal/h）

300

360

450

540

630

719

840

960

1,080

1,199

1,350

1,496

1,683

1,892

2,101

2,398

2,695

3,003

3,300

3,597

3,905

4,202

4,499

kW

349

419

523

628

733

836

977

1,116

1,256

1,394

1,570

1,740

1,957

2,200

2,443

2,788

3,134

3,492

3,837

4,183

4,541

4,886

5,231

6,960

7,460

Fuel connection (JIS)

inch

Flue connection

mm

Overall dimenstions
Length (L)

DE-63

DE-23

Connection (JIS)

Heating consumption

DE-62

DE-22

Hot water system
Flow rate

Cooling consumption

DE-61

DE-21

Holding water volume

Supply pressure

DE-53

DE-14

Connection (JIS)

Pressure drop

DE-52

DE-13

Flow rate

Pressure drop

DE-51

DE-12

Chilled water system

Pressure drop

DE-42

DE-11

capacity
Heating capacity

DE-41

Unit

mm

Width (W)

mm

Height (H)

mm

Tube removal

mm

1-1/2

1-1/2
280×210
2,960

3,080

1,810

310×310
3,700

3,950

1,980

2,070

360×310

4,860

4,950

2,090

1,960

2,160

2,400

3,400

410×310

4,930

4,940

2,280

2,490

2,390

2,600
4,500

4,500

2
350×500

5,260

5,810

2-1/2

3

400×620
6,300

6,040

2,990

6,480

400×900
7,010

6,430

3,240

2,900

6,960

7,460

4,100

3,330

4,450

3,450

3,650

4,600

5,200

5,700

5,200

5,700

6,200

5,700

6,200

6,700

6,200

6,700

Weights
Operating weight

kgf

4,900

5,200

6,300

6,800

8,000

8,500

9,800

10,400

12,800

13,500

15,800

16,600

22,200

24,000

25,700

31,900

34,400

37,100

45,100

48,500

51,500

56,100

59,100

Max. shipping weight

kgf

4,500

4,800

5,800

6,200

7,300

7,700

8,900

9,400

11,600

12,200

14,200

14,900

19,500

21,100

22,700

15,500

16,500

17,700

21,500

23,000

24,300

26,000

27,500

Total shipping weight

kgf

4,500

4,800

5,800

6,200

7,300

7,700

8,900

9,400

11,600

12,200

14,200

14,900

19,500

21,100

22,700

28,100

30,400

32,800

40,000

43,000

45,800

49,700

52,300

Shipping method
Electric power
Total electric current
Apparent power

1 section

1 section

2 sections

3 phase 380V 50Hz

3 phase 380V 50Hz
16.5

18.7

18.7

30.9

36.4

41.7

45.7

54.4

58.9

64.9

13.1

14.9

14.9

24.9

29.4

33.8

37.1

44.2

47.9

52.9

A

9.3

12.2

kVA

7.2

9.6

kW

1.3

2.5

3.4

3.4

3.7

A

3.9

6.8

9.1

9.1

13.4

13.6

13.7
10.8

Electric data
No.1 ABS pump
No.2 ABS pump
REF pump
Purge pump
Burner motor

5.5
15.0

7.5
19.0

24.0

kW

＊＊＊

＊＊＊

1.8

3.0

3.7

A

＊＊＊

＊＊＊

5.4

9.1

12.0

kW

0.2

0.4

A

1.3

1.8

0.4
1.8

kW

0.4

0.4

A

1.1

1.1

0.75
1.9

kW

0.76

1.4

2.6

2.6

4.0

6.5

9.0

12.0

A

2.1

3.5

5.7

5.7

8.0

13.5

18.0

24.0

PD cell heater

W

Control circuit

W

38

76
300

76

152
300
Specifications subject to change without notice.

18

19

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Scope of supply (DE)

Scope of order (DE)

1.Absorption chiller / heaters

(5) Burner and gas train
•Dual fuel burner as option

Chilled/hot water

(1) Unloading, transportation, and insurance depend on the
individual sales contractor between your company and
SANYO groups.
(2) Foundations with foundation bolts.

(6) Pumps
•Absorbent pump (s) with isolating valves
•Refrigerant pump with isolating valves
•Purge pump

(3) External chilled/hot water, cooling water, fuel gas and flue
piping work including various safety valves, isolating valves,
etc.

(7) Control panel
•CE marking (if requested according to the regulation).

(4) Rupture disk, flange of rupture disk, bolts, nuts, piping work
and tank, etc, if necessary.

(8) Locally mounted controls and instruments
•Temperature sensor
•H.T. generator solution level electrodes
•H.T. generator pressure gauge

(5) External wiring and piping for the chillers including
necessary parts.

(9) Purge device
•Purge tank
•Ejector and liquid trap
•Piping and various manual valves
•Palladium cell with heater

(7) Mating flanges, gaskets, bolts and nuts
•Gas inlet nozzle flange of gas train.
•Exhaust gas outlet nozzle flange.
•Inlet / outlet nozzle flanges of chilled/hot water. (evaporator)
•Inlet / outlet nozzle flanges of cooling water.
(absorber / condenser)

Inlet : 12.0°C
Outlet : 7.0°C

Flow rate

0.605m3/h•RT

Temperature

Inlet : 50.8°C
Outlet : 55.0°C
0.605m3/h•RT

Flow rate
Rank up

Flow rate
Max. working pressure
Hydraulic test pressure
Fouling factor
Material of tube
Water quality
Structure of water header
Manufacturing standard of water header
Kind of gas

784kPa (8kg/cm2G)
Max. working press.+196kPa (2kg/cm2)
0.088m2°C/kW (0.0001m2h°C/kcal)
Copper tube
Refer to JRA-GL02E-1994
Removal type
SANYO standard
Inlet : 32.0°C
Outlet : 37.5°C
1.0m3/h•RT
784kPa (8kg/cm2G)
Max. working press.+196kPa (2kg/cm2)
0.088m2°C/kW (0.0001m2h°C/kcal)
Copper tube
Refer to JRA-GL02E-1994
Removal type
SANYO standard
Natural gas

Supply gas pressure

29.4kPa(3,000mmH2O)

Phase
Voltage
Frequency

3 phase 380V 50Hz
(Voltage regulation : within ± 10%)
(Frequency regulation : within ± 5%)

Max. working pressure
Hydraulic test pressure
Fouling factor
Material of tube
Water quality
Structure of water header
Manufacturing standard of water header
Temperature

Cooling water

(4) High temperature (H.T.) generator

3.Scope of supply of the purchaser

Hot water

Shipment

(6) Insulation for the chillers including necessary parts.

Safety functions

(10) Interconnecting piping and wiring
(8) Finish painting of the chillers.
(11) Initial charge
•Absorbent (lithium bromide)
•Refrigerant
•Inhibitor

Capacity control

(9) Cooling water inlet temperature control device.

Parts
Painting

(10) Various temp. / press. gauges for gas and water lines.

(12) Electric power supply (specified value).

(14) Necessary tools, workers and materials for installation and
site test operation.
(15) After-sales service and periodical maintenance of the chillers.
(16) Any other item not specifically mentioned in the scope of
supply.

20

Display

External terminals
(no-voltage normal open contact)

(13) Supply of chilled water, cooling water, hot water and gas at
rated conditions.
Structure
Parts
Electrical wiring and piping

Installation condition

(13) Accessories
•Operation manual : One set
•Washer (for fixing foundation bolts) : One set
•Manometer : One piece
•Gasket and sealant for rupture disk : One set
(if requested according to the regulation).

(11) Cooling tower (s), chilled water pump (s), hot water pump (s)
and cooling water pump (s) and its auxiliary accessaries.

Control panel

Indication lamps

(12) Painting
•Main unit: Rust preventive painted
•Control panel: Finish painted

Standard

Temperature
Chilled water

Fuel

(3) Upper shell
•Low temperature (L.T.) generator
•Condenser
•Eliminators

Tests below are carried out in the SANYO factory.
•Check of external dimensions
•Leak test (vacuum side and gas train)
•Hydraulic test of water headers
•Electric insulation resistance test
•Dielectric breakdown test
•Function test of electric circuit and safety devices
•Performance test only for one section shipping unit.
＊ One unit is tested when several units of the same model are
ordered for one project.

Electricity

(2) Heat exchangers
•High temperature (H.T.) heat exchanger
•Low temperature (L.T.) heat exchanger

Item

2.Factory test

Control

(1) Lower shell
•Evaporator and refrigerant dispersion tray
•Absorber and absorbent dispersion tray
•Eliminators

Place
Ambient temperature
Ambient humidity
Atmosphere

One-section : DE-11 thru DE-53
Two-sections : DE-61 thru DE-82
Refrigerant temperature supervision
Chilled water freeze protection
Chilled water flow switch
Hot water temperature supervision
Cooling water temperature supervision
H.T. generator temperature supervision
H.T. generator press. supervision
H.T. generator level. supervision
Exhaust gas temperature supervision
Crystallization protection
Motor protection
Digital PID control by chilled water outlet temperature
Inverter control of No.1 absorbent pump
Selected by SANYO
Munsell 5Y-7/1
Operation
: red
Stop
: green
Equipment alarm : orange
LCD
Operation indication
Stop indication
Alarm indication
Ventilation fan operation
Answer back indication
Combustion indication
Cooling mode indication
Heating mode indication

Indoor type
Selected by SANYO
Wire : 600V grade polyvinyl chloride-insulated wires
Pipe : plicatube (flexible metal conduits)
Indoor
5°C~40°C
Relative humidity : Max.90% (45°C)
Be sure the following are not present:
•Corrosive gas
•Explosive gas
•Poisonous gas

Option
Outlet : 5°C~12°C
Temperature difference: 3°C~10°C
Changes depending on chilled water temperature
difference (min. flow rate : 50%)
Max. outlet temperature: 60°C
Additional heater : Max 80°C
Flow rate should correspond to chilled water flow rate
DE-11~42 : Max. 2 rank up
DE-51~81 : Max. 1 rank up
981∼1961kPa (10kg/cm2G~20kg/cm2G)
Max. working press.✕1.5 times (0.196m2°C/kW)
Max. 0.176m2°C/kW (0.0002m2h°C/kcal)
No option
No option
No option
No option
Inlet : 20.0°C~33.0°C
Within the water flow range of each model
981∼1961kPa (10kg/cm2G~20kg/cm2G)
Max. working press.✕1.5 times
Max. 0.196m2°C/kW (0.0002m2h°C/kcal)
No option
No option
No option
No option
LPG, Kerosine, Diesel oil
Contact SANYO's representative

Contact SANYO's representative

Multi-shipment

Cooling water flow switch

No option
No option
No option
No option
No option

No option

No option
No option
No option
No option
No option
No option
No option
No option

21

1265

923

595

CHW outlet
4 inch
CHW inlet
4 inch
COW inlet
5 inch

B
665

865

L
3080

2960

1810(W)

0

300
200

975

1940
1900

150

DE-14

B

923

595

CHW inlet
4 inch
COW inlet
5 inch

0

1265

1921
1809

800

1000

CHW outlet
4 inch

COW outlet
5 inch

Rupture Disk
4 inch

A
350

Model
DE-13

1980(W)

910

780
863

882

1960
(H)

300
200

934

0

755

480

205
325

0

229

882
800

R500

365
R500

1960
(H)

Wire connection
ø33 hole

900

600

300
350

112
0

882
800

CHW out

Wire connection ø33 hole

1940
1900

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 12. DE-13 Thru DE-14

0

1809

15

DE-12

COW outlet
5 inch

A
215

882

Model

0

DE-11

1030

200
180
230

365

0

A
B

A

1715

B

L

3700(L)

COW out

(Tube removal space either side)

2400

Flue connection 280✕210

Chamber drain PT1

Chamber drain PT1

Fuel connection
1-1/2 inch

Fuel connection
1-1/2 inch

COW in

0

200
180
328
230

1896
1865
1975

COW in / out

0
0

2311

2100

CHW out / in

2251
2361

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

0

CHW in

0

1921
1904

0

777

0

1904

Rupture Disk
4 inch

(Tube removal space either side)

3400

Flue connection 280✕210

2916

22
3096
3116

Figure 11. DE-11 Thru DE-12

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

23

1006

603

CHW inlet
5 inch
COW inlet
6 inch

550

1980

1333
1019

603

DE-24

COW outlet
8 inch

CHW outlet
6 inch
CHW inlet
6 inch
COW inlet
8 inch

0

A
750

Model
DE-23

1065

2070(W)
2140

0

200

2160
(H)
1064

1900

4950

1200

2090(W)

L
4860

B
1400

2140

0

300
200

2160
(H)
1050

1900

0

835

510

185
330
R500

R500

0

2106

Wire connection
ø33 hole

855

530

205
330

0

306

1065
1000

CHW in/out

1921

2106

COW in

0
0

COW in

Wire connection
ø33 hole

Rupture Disk
4 inch

Rupture Disk
4 inch

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 14. DE-23 Thru DE-24

0

1346

CHW outlet
5 inch

800

1980

150

DE-22

B
1000

COW outlet
6 inch

A
350

Model

1065

306

438

0

1065
1000

230

DE-21

880
960

438
411
221
195

A

A

L

CHW in

0

2089

0

905

COW out

(Tube removal space either side)

3400

Flue connection 310✕310

Chamber drain PT1

Chamber drain PT1

3950(L)

Fuel connection
1-1/2 inch

B

Fuel connection
1-1/2 inch

B

COW out

2350
2501
2652

CHW in/out

0

810
940

390
212
195
230
0

2916
3111
3128

0

2088

0

903

(Tube removal space either side)

4500

Flue connection 310✕310

2350
3400
3561

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

0

3936

24
4131

Figure 13. DE-21 Thru DE-22

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

25

1476

1066

611

CHW outlet
6 inch
CHW inlet
6 inch
COW inlet
8 inch

B
1200

1400

2280(W)

0

300
200

1100

2390
(H)

1900

2370

1613

1142

577

CHW outlet
8 inch
CHW inlet
8 inch

COW inlet
10 inch

0

2383

380
180

DE-41
DE-42

COW outlet
10 inch

A

Model

830

1030

B

2490(W)

0

300
200

1236

1900

2580

2600
(H)

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 16. DE-41 Thru DE-42

0

2198

550

DE-32

COW outlet
8 inch

A
750

Model
DE-31

R500

R500

0

Rupture Disk
4 inch
2531

Wire connection
ø33 hole

1045

645

245
385

0

307

1221
1150

CHW in/out

0

2340

COW in

0

COW in

0

CHW in/out

Wire connection
ø33 hole

900

550

200
320

0

358

1156
1100

Rupture Disk
4 inch

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

1156

1221

488

478

950
1042

1065
1184

494
250
245
255

492
276
244
255

0

0

0
0

A

B

B

4940(L)

Fuel connection
1-1/2 inch

Fuel connection
1-1/2 inch

A

Chamber drain PT1

4930(L)

COW out

0

COW out

4500
(Tube removal space either side)

0

2513

0

1032

(Tube removal space either side)

4500

0

978

2323

Flue connection 360✕310

Flue connection 410✕310

Chamber drain PT1

3486

3886

3150
3325

3080
3255
3416

3886

4130

26
4131

Figure 15. DE-31 Thru DE-32

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

27

4508

1170
650

CHW inlet
8 inch
COW inlet
12 inch

C

5246

4748

4206
3711
3911

3505
3705

3330
3530

2990(W)

F
3511

E
3305

D
3130
5200
5700

5024
5522

300
200
0

1378

1900

K
4600

G
4482

L

2900
(H)

6300

5810

5260

1315

753

CHW inlet
10 inch
COW inlet
14 inch

0

2025

5490

CHW outlet
10 inch

5350

DE-63

4966

3050

4826

DE-62

B
4468

COW outlet
14 inch

A
4328

Model

C

5780

5256

4758

1870

DE-61

E
3798
4098
4398

D
5076
5574
6099

3240(W)

4623

4323

4023

F

K
5200
5700
6200

G
4252
4552
4852

300
200
0

1634
3330
(H)

2-1/2

7010

1900

2
2

6480

M
6040

L

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 52 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 18. DE-61 Thru DE-63

0

1760

CHW outlet
8 inch

5006

2630

4378
4876

DE-52
DE-53

B
3966

COW outlet
12 inch

A

1700

3836

0

Model

1198

DE-51

0

290

COW out

R600

Wire connection
ø52 hole

1120
1220

420
620

0
120

736

1870
1800

COW out

Wire connection
ø54 hole

1020
1170

390
570

0
120

634

1600

640

CHW in/out

0

310

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 52 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

1255

265
240
0
130

765

CHW in/out

R600

L

Fuel connection
M inch

Fuel connection
1-1/2 inch

480

310
292
0
140
0

1130

748

28
1398

Figure 17. DE-51 Thru DE-53

L

Flue connection 350✕500

G

Chamber drain
1-1/2 inch

K

0

0

Rupture Disk
6 inch

Rupture Disk
6 inch

1635

3286
3260

Flue connection 400✕620

D

0

2855
2825

0

1463

(Tube removal space either side)

E FG

AB C

COW in

(Tube removal space either side)

K

Chamber drain 1-1/2 inch

DE F

AB C

COW in

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

29

4426
4950
5450

DE-71
DE-72
DE-73

300
0

735

1335

1960
1900

3135

5590

5090

4566

B
D
3170
3470
3770

C
5096
5620
6120

4950
5450

DE-81
DE-82

COW inlet
16 inch
Wire
connection
ø52 hole

CHW outlet
14 inch

CHW outlet
14 inch

COW outlet
16 inch

A

Model

300
0

757

1430

2040
1900

3330

5590

5090

B

2600

5700
6200
6700

3620
3920
4220

3395
3695
3995

4100(W)

K

F

E
2-1/2
3
3

6430
6960
7460

200
0

1564

M

L

3450
(H)

D
3770
3970

C
5620
6120

6200
6700

4220
4420

3995
4195

4450(W)

K

F

E

7460

6960

L

200
0

1647

3650
(H)

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 52 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 20. DE-81 Thru DE-82

COW inlet
16 inch
Wire
connection
ø52 hole

CHW outlet
12 inch

CHW outlet
12 inch

COW outlet
16 inch

A

2410

Model

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 52 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

1100

1200

3395

Rupture Disk
6 inch

3587

1600
1700

900

0
200

1006

2600
2400

CHW in/out

Rupture Disk
6 inch

1420
1520

820

0
220

920

2410
2200

990

CHW in/out
COW in

COW in

Fuel connection
3 inch

L

Chamber drain
1-1/2 inch

L

Chamber drain
1-1/2 inch

00
R6

AB
C

AB

C

K

COW out

0

0

3560

0

2185

3360

0

2005

(Tube removal space either side)

Flue connection
400✕900

DE F

K

COW out

(Tube removal space either side)

Flue connection
400✕900

3720

DE F

00
R6

Wire connection ø52 hole

Wire connection ø52 hole

Fuel connection
M inch

710

0

0

990
710
786
580

786
580

1528

1688

0
140
0
70

0
140
0
70

30
3720

Figure 19. DE-71 Thru DE-73

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

31

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Control panel (DE)

Foundation dimensional data (DE)
Figure 22. DE-11 Thru DE-12

Figure 21. Details of weld

C
Nut

G

G

S

80

Washer
Base

AA

AA

T

E

F

A

Weld

P

H

M
L

BB
CC

H Generator temp

STOP RUN
CHILLER

149.9°C

COOLING

BURNER

HEATING

ALARM

BUZZER STOP

REF PUMP
#1 ABS PUMP

MODE

R

K

A=150mm and more

U

G

SETTING

#2 ABS PUMP

OPERATION

REMOTE

STOP

LOCAL

PURGE PUMP
BURNER BLOWER

N

Figure 23. DE-13 Thru DE-63
C

H

B

A

D

G

Q

D

Figure 24. DE-71 Thru DE-82
C
T
P

H

D

G

D

G

AA

E

F

AA

Table 6. Indication lamp

Q

G

symbol

K

J

F

P
Q

U

CC

T

E

S

BB

AA

R

H

M
L

K

AA

N

S

BB

G

R
M

CC

L

B

A

H

NOTES :
1. Shaded area indicates the base of absorption chiller/heaters.
2. A reasonably level concrete foundation must be provided on which
to mount the chiller.
3. Provide a floor drainage ditch around foundation of the chiller.
4. If foundation anchoring is required, supply anchor bolts and nuts. Fix
anchor bolts on the foundation prior to chiller installation and as per
detail of weld (Figure 21). Washers are supplied with the chiller.

J

J
A

N

B

5. For direct-fired (DE) chiller/heaters, provide support for the burner
and gas train.
6. Unit must be level before startup. See leveling information in ” Instal
lation and Application Data ” section of this catalog.

Name
Running(Operation) indication lamp
Stop indication lamp
Alarm indication lamp
Bunner combustion indication lamp
Cooling / Heating indication lamp
Remote / Local select button with lamp
Mode select button with lamp
Data display

Figure 25. Control panel

DE--11 thru DE--42

Lamp color
Red
Green
Orange
Red
Orange
Red
Red
LCD

DE--51 thru DE--82

500

600

Table 5. Dimensional data
Dimensions (mm)
F

G

H

DE-11 4,900 1,600 900
DE-12 5,200 1,700 1,000

800

865

850

1,896

--

800

I

K

L

M

N

P

Q

R

S

175

350

150

550

850

175

350

150

650

150

900 1,855

800

665 1,050 1,896

--

800

1,100 150

DE-13 6,000 2,100 1,200
DE-14 6,800 2,300 1,300

900

1,000 1,100 2,916

--

800

1,100 150

175

350

150

550

850

175

350

150

650

150

900 1,855

175

350

150

600

900

175

350

150

700

150

900

800 1,300 2,916

--

800

1,100 150

900

175

350

300

600

900

175

350

150

700

150

900

DE-21 8,000 2,700 1,400 1,200 1,000 1,350 2,916
DE-22 8,500 2,800 1,600 1,300 800 1,550 2,916

--

1,000 1,300 150

175

350

185

650

950

175

350

150

750

150 1,100

--

--

1,000 1,300 150

DE-23 9,800 3,300 1,700 1,500 1,400 1,850 3,936
DE-24 10,400 3,500 1,900 1,500 1,200 2,050 3,936

--

1,000 1,300 150

175

350

185

650

950

175

350

150

750

150 1,100

--

175

350

205

650

950

175

350

150

750

150 1,100

--

1,000 1,300 150

--

175

350

205

650

950

175

350

150

750

150 1,100

DE-31 12,800 4,400 2,200 1,800 1,400 1,750 3,886
DE-32 13,500 4,500 2,400 2,100 1,200 1,950 3,886

--

--

1,100 1,400 150

200

400

200

700

1,000

200

400

200

800

200 1,200

--

DE-41 15,800 5,400 2,700 2,300 1,030 2,050 3,886
DE-42 16,600 5,500 3,000 2,600 830 2,250 3,886

--

1,100 1,400 150

200

400

200

700

1,000

200

400

200

800

200 1,200

--

--

1,150 1,450 150

200

400

245

800

1,100

200

400

200

900

200 1,250

--

--

1,150 1,450 150

200

400

245

800

1,100

200

400

200

900

200 1,250

--

DE-51 22,200 8,000 3,300 2,900 1,130 2,000 3,966
DE-52 24,000 8,600 3,600 3,200 1,130 2,200 4,508

130

1,600 1,960 180

190

510

120

900

1,260

230

460

200

1,000

250 1,700

--

130

1,600 1,960 180

190

510

120

900

1,260

230

460

200

1,000

250 1,700

--

DE-53 25,700 9,200 3,900 3,400 1,130 2,400 5,006
DE-61 31,90011,300 4,900 4,400 1,398 2,400 4,468

130

1,600 1,960 180

190

510

120

900

1,260

230

460

200

1,000

250 1,700

--

140

1,800 2,160 180

310

560

120

1,000 1,360

280

560

300

1,100

300 1,900

--

DE-62 34,40012,100 5,400 4,800 1,398 2,700 4,966
DE-63 37,10013,000 5,800 5,300 1,398 3,000 5,490

140

1,800 2,160 180

210

560

120

1,000 1,360

280

560

300

1,100

300 1,900

--

140

1,800 2,160 180

210

560

120

1,000 1,360

280

560

300

1,100

300 1,900

--

DE-71 45,10015,900 6,900 6,400
DE-72 48,50017,000 7,600 6,900

70

3,100 4,566

140

2,200 2,560 180

210

560

220

1,200 1,560

280

560

300

1,300

300 2,300

--

70

3,400 5,091

140

2,200 2,560 180

210

560

220

1,200 1,560

280

560

300

1,300

300 2,300

--

DE-73 51,50018,000 8,100 7,400
DE-81 56,10019,500 8,900 8,200

70

3,700 5,594

140

2,200 2,560 180

210

560

220

1,200 1,560

280

560

300

1,300

300 2,300

--

70

3,700 5,091

140

2,400 2,760 180

210

560

200

1,400 1,760

280

560

300

1,500

300 2,500

--

DE-82 59,10020,600 9,300 8,600

70

3,900 5,591

140

2,400 2,760 180

210

560

200

1,400 1,760

280

560

300

1,500

300 2,500

--

1,100 150

T

U

---

Power supply ø33
Remote control ø27

Power supply ø52
Remote control ø27

30

E

300

D

120 70

C

30

B

300

A

120 70

CC

1600

Weight (kg)
Model
No. Oper. AA
BB

80

32

33

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Field wiring (DE)
Start/Stop sequence of auxiliary equipments

Figure 26. Typical electrical field connection diagram - Direct-fired (DE)

Start
Start signal

Cooling water pump
operates and then
cooling tower fan
operates

Diluted operation starts

Cooling water pump
stops and cooling
tower fan stops

(52F)

Stop
Stop signal

Operate air conditioners

Machine operates

Chilled/hot water pump stops
and ventilation fan stops

Chiller stops entirely

Stop air conditioners
Ventilation fan
interlock

(52CH)
Chilled/hot water
pump interlock

Remove the jumper
before using
those terminals

(52CO)

For emergency stop signal
(Those terminals are
connected by jumper)

Cooling water
pump interlock

To power source
3 Ph,50/60Hz
400V, 415V, 440V

Chilled/hot water pump
operates and
ventilation fan operates

For message signal

335

334

327

326

L

325

323

L

324

322

321

320

317

316

315

314

309

308

307

306

305

304

303

302

301

300

84

85

171

138

136

135

10

4

3

2

1

T0

S0

E

R0

Terminal strips in the control panel

Remote signal
52
CO
Max. voltage and
Max. current
:AC 250V,0.1A

Terminal strips in the control panel
171

171

A

4Y
1

A

A

A

4Y 4Y
1 2

4Y
1

34

(2)

(3)

(4)

DC/AC 24V

332

331

B

4Y
2
DC/AC 24V

(1)

330

332

330

332

333

331

330

332

333

331

330

332

333

330

COM

171

23
CO

52
CO

52
F

L

52
CT

L

L

L

Ventilation
fan

Remote signal
indication

Cooling tower
fan

Cooling mode
indication

Heating mode
indication

Alarm
indication

Symbols
L
:Indication lamp
51CH:Chilled/hot water pump overcurrent relay
51CO:Cooling water pump overcurrent relay

L

L

Combustion
indication

52
CH

Buzzer signal
indication

L

Cooling water
pump

51
CT

Chilled/hot
water pump

51
CO

Answer back
indication

51
CH

Operation
indication
Stop
indication

The unit can be operated by the following five type signal.
(1)Non-voltage normal open contact(A) for start & stop (DC24V 10mA).
:Wiring the terminal 330 and 333.
(2)Non-voltage normal open contact(A) for start (DC24V 10mA).
:Wiring the terminal 330 and 333.
Non-voltage normal open contact(A) for stop (DC24V 10mA).
:Wiring the terminal 331 and 333.
(3)Non-voltage normal open contact(A) for start (DC24V 10mA).
:Wiring the terminal 330 and 333.
Non-voltage normal close contact(B) for stop (DC24V 10mA).
:Wiring the terminal 331 and 333.
(4)Continuous signal of DC/AC 24V for start & stop.
:Wiring the terminal 330 and 332.(Those terminals are non-polarity.)
(5)Pulse signal of DC/AC 24V for start.
:Wiring the terminal 330 and 332.(Those terminals are non-polarity.)
Signal of DC/AC 24V for stop.
:Wiring the terminal 331 and 332.(Those terminals are non-polarity.)

51CT :Cooling tower fan overcurrent relay
23CO:Cooling tower fan thermostat

Note
1.Be sure to insert 23CO at the cooling water inlet side.
2.Be sure to wire the 52CH(interlock) between terminals 171 and 136.
3.Be sure to wire the 52CO(interlock) between terminals 171 and 135.
4.Be sure to wire the 52F(interlock) between terminals 171 and 138.
5.Be sure to wire the chilled/hot water pump control relay between terminals 302 and 303.
6.Be sure to wire the cooling water pump control relay between terminals 304 and 305.
7.Be sure to wire the ventilation fan between terminals 306 and 307.

(5)

35

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Sequence of cooling operation (DE)

Sequence of heating operation (DE)
As the cooling load is satisfied with the chiller/heaters at minimum load,
the unit will cycle off as the leaving chilled water temperature drops to
5.5°C, 1.5°C below setpoint.
When the microprocessor issues a stop signal, the generator heat source
will shut off and the dilution cycle will start. The dilution cycle will last
between 6 and 15 minutes depending on generator temperature. The
dilution cycle will consist of stopping of the refrigerant pump, absorbent
pump(s), and the cooling water pump in turn. The unit is capable of restarting during the dilution cycle.

Figure 27 illustrates the typical operating sequence of a SANYO DE direct-fired absorption chiller / heaters. The NE steam-fired unit does not
include the time delays associated with the burner blower, gas valve and
ignition functions.
With a chilled water setpoint of 6.7°C and with the chiller/heaters enabled, the start signal will be energized as the leaving chilled water temperature rises to 7.7°C, 1.0°C above setpoint.
The burner initially completes a 36-seconds pre-purge operation that includes gas valve and supply air damper modulation to full open to insure
complete purging of the combustion chamber.
The No. 1 absorbent pump flow rate is changed during all stages of operation to insure quicker start-up and optimum performance at part load.

Figure 27. Typical combustion time chart (cooling operation)

As the heating load is satisfied with the chiller/heaters at minimum load,
the unit will cycle off as the leaving heating water temperature rises to
57°C, 2°C above setpoint.
When the microprocessor receives a stop signal, the generator heat
source will shut off and the dilution cycle will begin. The dilution cycle will
last approximately 5 minutes depending on generator temperature. The
dilution cycle consists of timed stopping of the No. 1 absorbent pump.
The chiller/heaters is capable of restarting during the dilution cycle.

Figure 28 illustrates the typical operating sequence of a SANYO DE direct-fired absorption chiller/heaters in heating mode.
With a hot water setpoint of 55°C, the start signal will be energized as the
leaving heating water temperature drops to 54°C, 1.0°C below setpoint.
The burner initially completes a 36-second pre-purge operation that includes gas valve and supply air damper modulation to full open to insure
complete purging of the combustion chamber. The No. 1 absorbent pump
flow rate is varied during all stages of operation to insure quicker start-up
and optimum performance at part load. On chiller/heaters with two absorbent pumps, the No. 2 pump remains off at all times during the heating mode.

Figure 28. Typical combustion time chart (heating operation)

Start signal

Start signal

Stop signal

Stop signal
Chiller stop

Chiller stop

Burner
Blower
Gas control
valve

Pre-purge

4

2

8

2

Control

Post-purge

36 sec.

sec.

sec.

sec.

sec.

area

12 sec.

Pre-purge
36 sec.
Burner
Blower

ON
OFF

Gas control
valve

Open
Close

4
sec.

2
sec.

8
sec.

2
sec.

Control
area

Post-purge
12 sec.

ON
OFF
Open
Close

Ignition

ON
OFF

Ignition

ON
OFF

Sol. valve
Ignition gas

ON
OFF

Sol. valve
Ignition gas

ON
OFF

Sol. valve
Main gas

ON
OFF

Sol. valve
Main gas

ON
OFF

No. 1 ABSO
pump

ON
OFF

No. 1 ABSO
pump

ON
OFF

No. 2 ABSO
pump

ON
OFF

Approx. 5 min.

Dilution cycle
Approx. 5 min.

Refrigerant
pump

ON
OFF
Approx. 5 min.

36

Dilution cycle
Approx. 6 -- 15 min.

37

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Flue flange dimensional data

Flue & stack connection
The flue and stack must be heat-insulated and provided with a damper
and a condensate drain.
The flue should never be connected to an incinerator stack.
Locate the top end of the smoke stack at a sufficiently large distance
away from the cooling tower.

If the same stack is used for discharging exhaust from two systems, the
back flow of exhaust should be prevented from going into the one which
is out of operation.
Provide a draft regulator if fluctuations in static pressure are expected
inside the flue.

Figure 30. Flue flange
K

B

D

C

E

F

G

H

A

Typical steel stack

4-

As illustrated, the steel stack should be lined on the interior surface as a
protection from corrosion due to exhaust gas.

R

10

Compliance with local regulation

P

R

S

Q

Municipal codes in many areas may regulate large capacity chillers consuming oil or gas as fuel.
Such regulations should be strictly abided by.

øT hole
N

M

Figure 29. Typical flue and stack installation

A

Internal lining

M

NOTES :
Please design the draft pressure at flue flange of the chiller/heaters with
negative pressure 0 thru -29.4Pa (0 thru -3mmH2O).

L

NOTE :
1. Field supply
2. Steel material

Stack

Draft regulator

6

Flue(Insulated)

Table 7. Dimensional data
Field supply
Damper
Condensate drain

Condensate drain

38

Fire-proof mortar

Dimensions (mm)

Model
No.

A

B

C

D

E

F

G

H

K

L

M

N

P

Q

R

S

T

DE-11

15

110

110

110

---

---

---

---

345

360

38

130

130

---

275

290

15

DE-12

15

110

110

110

---

---

---

---

345

360

38

130

130

---

275

290

15

DE-13

15

110

110

110

---

---

---

---

345

360

38

130

130

---

275

290

15

DE-14

15

110

110

110

---

---

---

---

345

360

38

130

130

---

275

290

15

DE-21

15

120

120

---

---

---

---

---

375

390

38

120

120

---

375

390

15

DE-22

15

120

120

---

---

---

---

---

375

390

38

120

120

---

375

390

15

DE-23

15

120

120

---

---

---

---

---

375

390

38

120

120

---

375

390

15

DE-24

15

120

120

---

---

---

---

---

375

390

38

120

120

---

375

390

15

DE-31

20

100.5

100.5

100.5

---

---

---

---

422

442

38

117

118

---

372

392

15

DE-32

20

100.5

100.5

100.5

---

---

---

---

422

442

38

117

118

---

372

392

15

DE-41

15

115

115

115

---

---

---

---

475

490

38

120

120

---

375

390

15

DE-42

15

115

115

115

---

---

---

---

475

490

38

120

120

---

375

390

15

DE-51

15

139.5

139.5

139.5

---

---

---

---

573

588

38

137

137

--

426

441

15

DE-52

15

139.5

139.5

139.5

---

---

---

---

573

588

38

137

137

--

426

441

15

DE-53

15

139.5

139.5

139.5

---

---

---

---

573

588

38

137

137

--

426

441

15

DE-61

15

113

113

113

113

113

---

---

693

708

38

114.5

114.5

114.5

473

488

15

DE-62

15

113

113

113

113

113

---

---

693

708

38

114.5

114.5

114.5

473

488

15

DE-63

15

113

113

113

113

113

---

---

693

708

38

114.5

114.5

114.5

473

488

15

DE-71

15

119

120

120

120

120

120

120

973

988

38

113

113

112

464

479

19

DE-72

15

119

120

120

120

120

120

120

973

988

38

113

113

112

464

479

19

DE-73

15

119

120

120

120

120

120

120

973

988

38

113

113

112

464

479

19

DE-81

15

119

120

120

120

120

120

120

973

988

38

113

113

112

464

479

19

DE-82

15

119

120

120

120

120

120

120

973

988

38

113

113

112

464

479

19

39

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Gas train

Burner description
The DE direct-fired chiller/heaters are equipped with a nozzle mix burner.
The burners are capable of firing with natural gas.
The burner is factory wired and tested prior to shipment. Manual modulation from low fire to high fire during startup and routine maintenance procedures is provided by an operation switch in the chiller control panel.

The burner maximizes flame retention at all capacity ranges of modulation, thus ensuring long life and efficient operation.

The following drawing illustrates some of the common components found
in a typical gas train and unit installation. Individual jobs may vary depending on chiller size and specific application.

Table 8. Burner model
Oil burner

Gas burner
Model No.

Dual fuel (combination) gas / oil burner

Natural gas

Kerosene / light oil

Heavy oil

Natural gas & kerosene

Natural gas & heavy oil

Model

Model

Model

Model

Model

DE-11

G1 ZMD

---

---

RGL3 ZMD

---

DE-12

G3 ZMD

RL3 ZMD

---

RGL3 ZMD

---

DE-13

G3 ZMD

RL3 ZMD

---

RGL3 ZMD

---

DE-14

G3 ZMD

RL3 ZMD

---

RGL3 ZMD

---

DE-21

G5 ZMD

RL3 ZMD

---

RGL5 ZMD

---

DE-22

G5 ZMD

RL5 ZMD

---

RGL5 ZMD

---

DE-23

G5 ZMD

RL5 ZMD

---

RGL5 ZMD

---

DE-24

G7 ZMD

RL5 ZMD

RMS 7 ZMD

RGL7 ZMD

RGMS7 ZMD

DE-31

G7 ZMD

RL7 ZMD

RMS 7 ZMD

RGL7 ZMD

RGMS7 ZMD

DE-32

G7 ZMD

RL7 ZMD

RMS 7 ZMD

RGL7 ZMD

RGMS7 ZMD

DE-41

G7 ZMD

RL7 ZMD

RMS 7 ZMD

RGL7 ZMD

RGMS7 ZMD

DE-42

G7 ZMD

RL7 ZMD

RMS 7 ZMD

RGL7 ZMD

RGMS7 ZMD

DE-51

G8 ZMD

RL7 ZMD

RMS 8 ZMD

RGL8 ZMD

RGMS8 ZMD

DE-52

G8 ZMD

RL8 ZMD

RMS 8 ZMD

RGL8 ZMD

RGMS8 ZMD

DE-53

G9 ZMD

RL8 ZMD

RMS 9 ZMD

RGL9 ZMD

RGMS9 ZMD

DE-61

G9 ZMD

RL8 ZMD

RMS 9 ZMD

RGL9 ZMD

RGMS9 ZMD

DE-62

G9 ZMD

RL8 / 2 ZMD

RMS 9 ZMD

RGL9 ZMD

RGMS9 ZMD

DE-63

G9 ZMD

RL8 / 2 ZMD

RMS 10 ZMD

RGL9 ZMD

RGMS10 ZMD

DE-71

G10 ZMD

RL9 ZMD

RMS 10 ZMD

RGL10 ZMD

RGMS10 ZMD

DE-72

G10 ZMD

RL10 ZMD

RMS 11 ZMD

RGL10 ZMD

RGMS11 ZMD

DE-73

G11 ZMD

RL10 ZMD

RMS 11 ZMD

RGL11 ZMD

RGMS11 ZMD

DE-81

G11 ZMD

RL10 ZMD

RMS 11 ZMD

RGL11 ZMD

RGMS11 ZMD

DE-82

G11 ZMD

RL11 ZMD

RMS 50 / 2 ZMD

RGL11 ZMD

RGMS50 / 2 ZMD

Figure 31. Typical burner and gas train

Table 9. Gas train
symbol

Parts name.
Ball valve
Pressure gauge with push button valve
Gas filter
Low pressure governor
Gas pressure switch
Double solenoid valve (DMV)
Gas butterfly valve
Valve proving system (VPS)
Solenoid valve for ignition gas
Blower
Air pressure switch1
Air damper
Burner

11

12

13

9

14

Air

P

GAS

P

1

40

2

3

4

5

8

6

7

41

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Steam-fired chillers

Typical piping diagram (DE)
Figure 32. Typical piping diagram
Air conditioner

Expansion tank

COOLING
TOWER
HC

C

Water supply
Flue

F
Chiller / hot
water pump
(secondary)

Chilled / hot
water pump
(primary)

P T
P T
P T

By-pass valve

P T
Air vent

Supply
header

Return
header

Tank
above
1M3

Fuel
Cooling water pump
To drain ditch

T : Thermometer

P : Pressure gauge

F : Flow meter

: Water pump

: Strainer

: Valve

: Valve

: Thermostat

Cooling cycle schematic
In order to prevent freezing up of chilled water when the chiller/heaters
get a stop signal, continue the operation of the primary and secondary
chilled/hot water pumps and air conditioner during dilution cycle
operation of the chiller/heaters.
(about 15 minutes).

Figure 33. Steam-fired chillers

Heat 1.0

Heat sink 2.2

Steam

General remarks on piping work
1. Equipment and parts outside the area surrounded by the broken line
are not supplied by SANYO.
2. Refer to the “Dimensions” for pipe connections and diameters.
3. Determine the locations of the chilled/hot water pumps, cooling
water pump and expansion tank in due consideration of the pump’s
hydrostatic head.
The chiller/heaters should not, as standard condition, be subject to a
pressure larger than 784kPa (8 kg/cm2G) at any water headers.
4. Concerning the temperature control of cooling water, refer to the
section of “control method of cooling water temperature”.
5. The chilled/hot and cooling water pumps should preferably be
provided exclusively for each chiller/heaters.
6. During heating operation, cooling water must be discharged.
7. Provide a thermometer and pressure gauge at the outlet and inlet of
the chilled/hot and cooling water pipe connections.
8. Provide an air vent valve in each of the chilled/hot and cooling water
lines at a point higher than each header.
9. Lay pipes from the cover of the evaporator, absorber and smoke
chamber to the drain ditch.

Cooling Water

10.Provide expansion tank in the chilled/hot water line.
11. Provide a bleeder in the cooling water line for control of water quality.
12.There should be a sufficiently large clearance for easy access to the
evaporator, absorber and condenser, to facilitate inspection and
cleaning work.
13.Provide heat insulation to the flue, which should be equipped with a
damper and condensate drain.
14.Do not connect the flue to the smoke stack of an incinerator.
15.When one flue is used for two or more chiller/heaters, a device
has to be provided to prevent the flow of exhaust gas into the one
which is out of operation.
16.The exhaust discharge end of the flue should be kept a sufficiently
large distance away from the cooling tower.
17.Provide a draft regulator if the static pressure inside the flue is
subject to fluctuations.
18.Fix the rupture disk on the chiller/heaters according to the manual of
rupture disk, if necessary.
19.All external water piping with JIS 10k welding flanges are to be
provided by the customer.

High Temperature
Generator

Chilled Water
High Temperature
Heat Exchanger
SteamTrap

Heat Reclaimer

Evaporator
Absorber
Cooling Water

Steam Drain

Low Temperature
Heat Exchanger

Refrigeration capacity 1.2
Conc. solution

42

Condenser

Low Temperature
Generator

Int. solution

Dil. solution

Liq. refrigerant Vap. refrigerant Cooling water

Chilled water

Steam

43

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Double effect steam-fired absorption chillers
Chilled water of 7°C is produced by high efficient double effect operation using steam of 784kPa or hot water of
190~200°C as its driving heat source. It is able to improve the balance of electricity and steam by means of effective use of turbine back pressure steam and surplus steam.
◆ NE Model Specification
Model（TSA-NE-＊＊）
Refrigeration

Unit

NE-11

NE-12

（USRT）

100

120

kW

352

422

capacity

NE-24

NE-31

NE-32

NE-42

NE-51

NE-52

NE-53

NE-61

NE-62

NE-63

NE-71

NE-72

NE-73

NE-81

NE-82

NE-21

NE-22

150

180

210

240

280

320

360

400

450

500

560

630

700

800

900

1,000

1,100

1,200

1,300

1,400

1,500

527

633

738

844

985

1,125

1,266

1,407

1,582

1,758

1,969

2,215

2,461

2,813

3,165

3,516

3,868

4,220

4,571

4,923

5,274

302

12 → 7℃
（Fouling factor = 0.088m2 ℃ / kW
（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa
（8 kgf / cm2G）
）

3

m /h

60.5

72.6

90.7

109

127

145

169

194

218

242

272

339

381

423

484

544

605

665

726

786

847

907

（mH2O）

6.5

6.6

8.0

8.3

7.5

7.9

5.1

5.5

5.8

6.1

5.2

5.5

4.6

6.2

8.1

5.7

7.6

9.9

6.2

7.8

9.6

7.8

9.5

kPa

64

65

78

81

74

77

50

54

57

60

51

54

45

61

79

56

74

97

61

76

94

76

Flow rate

Connection (JIS)

inch

Holding water volume
Cooling water system

liter

4
0.12

0.13

5
0.15

0.17

8

6

0.22

0.24

0.28

0.30

0.34

0.36

0.46

0.48

0.65

10
0.71

0.77

0.99

93

12

1.06

1.13

1.41

1.51

14
1.61

1.83

1.94

32 → 37.5℃
（Fouling factor = 0.088m2 ℃ / kW
（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa
（8 kgf / cm2G）
）

（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa
（8 kgf / cm2G）
）
32 → 37.5℃
（Fouling factor = 0.088m2 ℃ / kW
m3/h

100

120

150

180

210

240

280

320

360

400

450

500

560

630

700

800

900

1,000

1,100

1,200

1,300

1,400

1,500

（mH2O）

3.9

4.4

6.5

7.7

5.6

6.2

10.9

12.1

8.7

9.4

10.3

11.2

7.1

9.4

12.1

8.5

11.2

14.4

9.4

11.8

14.5

12.2

14.7

kPa

38

43

64

75

55

61

107

119

85

92

101

110

70

92

119

83

110

141

92

116

142

120

144

Flow rate
Pressure drop

NE-23

NE-41

NE-14

12 → 7℃
（Fouling factor = 0.088m2 ℃ / kW
（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa
（8 kgf / cm2G）
）

Chilled water system

Pressure drop

NE-13

Connection (JIS)

inch

Holding water volume

m3

5
0.31

0.34

6
0.38

0.42

0.53

Kind of steam
Supply pressure

10

8
0.58

0.63

0.69

0.89

0.95

12

1.11

1.19

1.87

14

2.01

2.14

2.79

2.97

（kg/cm2G）

8.0

8.0

kPa

784

784

kg/h

Steam connection (JIS)

inch

Drain connection (JIS)

inch

Control valve conn. (JIS)

inch

440

528

660

792

924

3.15

3.67

3.90

4.11

4.51

4.76

4,400

4,840

5,280

5,720

6,160

6,600

Saturated Steam

Saturated Steam

Steam consumption

16

1,060

2

1,230

1,410

1,580

1,760

2-1/2

1,980

2,200

1

1-1/2

1-1/2

2,470

3

2,780

3,080

3,520

3,960

4

5

1-1/2

2

2-1/2

2

2-1/2

3
2

6
3
3

4

Overall dimentions
Length (L)

mm

Width (W)

mm

Height (H)

mm

Tube removal

mm

2,785

3,735

3,865

4,885

1,440

1,635

2,200

2,250

2,400

4,930

4,940

1,755

1,975

2,390

3,400

5,725

6,225

5,840

2,300

2,600
4,500

4,500

5,185

6,335

6,865

6,430

2,500

2,900

6,960

7,460

6,960

3,000

3,330

7,460
3,200

3,450

3,650

4,600

5,100

5,600

5,200

5,700

6,200

6,000

6,500

7,000

6,500

7,000

Weights
Operation weight

kgf

4,200

4,400

5,500

5,700

6,800

7,100

8,400

8,800

10,800

11,200

13,200

13,600

18,800

20,400

21,900

26,600

28,500

30,500

36,200

38,200

40,500

43,600

46,100

Max shipping weight

kgf

3,800

4,000

5,000

5,100

6,100

6,300

7,500

7,800

9,600

9,900

11,600

11,900

16,300

17,700

19,000

22,800

24,500

26,200

24,600

25,800

27,300

29,100

30,700

9,900

11,600

11,900

16,300

17,700

19,000

22,800

24,500

26,200

24,600

25,800

27,300

29,100

30,700

Total Shipping weight

kgf

3,800

4,000

5,000

5,100

6,100

Shipping method
Electric Power
Total electric current
Apparent power

6,300

7,500

7,800

9,600

1 section

1 section

3 phase 380V 50Hz

3 phase 380V 50Hz
A

7.2

10.1

12.9

12.9

22.6

28.0

32.0

40.7

kVA

5.5

7.9

10.2

10.2

18.2

22.6

25.9

33.0

kW

1.3

2.5

3.4

3.4

3.7

A

3.9

6.8

9.1

9.1

13.4

19.0

24.0

Electric data
No.1 ABS pump
No.2 ABS pump
REF pump

5.5
15.0

kW

＊＊＊

＊＊＊

1.8

3.0

3.7

A

＊＊＊

＊＊＊

5.4

9.1

12.0

kW

0.2

0.4

A

1.3

1.8

0.4
1.8

kW

0.4

0.4

A

1.1

1.1

PD cell heater

W

38

Control circuit

W

300

Purge pump

7.5

0.75
1.9

38

76
300
Specifications subject to change without notice.

44

45

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

The heating
cycle
Scope
of order
(NE)

Scope of supply (NE)

(4) High temperature (H.T.) generator
(2) Foundations with foundation bolts.
(5) Heat reclaimer
(6) Pumps
•Absorbent pump(s) with isolating valves
•Refrigerant pump with isolating valves
•Purge pump
(7) Control panel
•CE marking (if requested according to the regulation).
(8) Steam control valve
•Control valve (electric type)
•Shutoff valve
(9) Locally mounted controls and electric parts
•Temperature sensor
•H.T. generator solution level electrodes
•H.T. generator pressure gauge
(10) Purge unit
•Storage tank
•Ejector and liquid trap
•Piping and various manual valves
•Palladium cell with heater
(11) Interconnecting piping and wiring
(12) Initial charge
•Absorbent (lithium bromide)
•Refrigerant
•Inhibitor
(13) Painting
•Main unit: rust preventive painted
•Control panel: finish painted
(14) Accessories
•Operation manual : One set
•Washer (for fixing foundation bolts) : One set
•Manometer : One piece
•Gasket and sealant for rupture disk : One set
(if requested according to the regulation).

(3) External chilled/water, cooling water, steam and drain
piping work including various safety valves. isolating valves,
etc.
(4) Rupture disk, flange of rupture disk, bolts, nuts, piping work
and tank, etc, if necessary.
(5) External wiring and piping for the chillers including
necessary parts.

(7) Mating flanges, gaskets, bolts and nuts
•Steam inlet nozzle flange for H.T. generator steam header.
•Steam drain outlet nozzle flange.
•Inlet/outlet nozzle flanges for chilled water. (evaporator)
•Inlet/outlet nozzle flanges for cooling water. (absorber/condenser)

Chilled water

Flow rate

0.605m3/h•RT

Max. working pressure
Hydraulic test pressure
Fouling factor
Material of tubes
Water quality
Structure of water header
Manufacturing standard of water header

784kPa (8kg/cm2G)
Max. working press.+196kPa (2kg/cm2)
0.088m2 °C/kW (0.0001m2h°C/kcal)
Material : copper tube
Refer to JRA-GL02E-1994
Removal type
SANYO standard

Temperature

Inlet : 32.0°C
Outlet : 37.5°C

Flow rate
Max. working pressure
Hydraulic test pressure
Fouling factor
Material of tubes
Water quality
Structure of water header
Manufacturing standard of water header

1.0m3/h•RT
784kPa (8kg/cm2G)
Max. working press.+196kPa (2kg/cm2)
0.088m2 °C/kW (0.0001m2h°C/kcal)
Material : copper tube
Refer to JRA-GL02E-1994
Removal type
SANYO standard

Supply pressure

784kPa (8kg/cm2G) Saturated steam

Steam consumption rate
Max. working pressure
Hydraulic test pressure

4.4kg/h•RT
981kPa (10kg/cm2G)
1,471kPa (15kg/cm2G)
Material : 9/1 copper nickel
Quality : refer to JIS B-8223
Removal type
Japanese pressure vessel code

Material of tubes and steam quality

Electricity
Shipment

Safety functions

(8) Finish painting of the chillers.
(9) Cooling water inlet temperature control device.

Temperature

Inlet : 12.0°C
Outlet : 7.0°C

Structure of water header
Manufacturing standard of water header

(6) Insulation for the chillers including necessary parts.

(10) Furnishing air-piping* and electric wiring/piping of steam
control valve including necessary parts.

Capacity control

(11) Various temp./press. gauges for steam and water lines.

Parts
Painting

(12) Steam drain tank.

Indication lamps

(13) Cooling tower(s), chilled water pump(s) and cooling water
pump(s) and its auxilialy accessaries.
(14) Electric power supply (specified value).
(15) Supply of chilled water, cooling water, steam and air* at rated
conditions.
(16) Necessary tools, workers and materials for installation and
site test operation.
(17) After-sales service and periodical maintenance of the chillers.
(18) Any other item not specifically mentioned in the scope of
supply.

46

Cooling water

3.Scope of supply of the purchaser
(1) Unloading, transportation, and insurance depend on the individual sales contractor between your company and SANYO
group.

Note: *For electric-pneumatic valve only.

Standard

Item

Steam

(3) Upper shell
•Low temperature (L.T.) generator
•Condenser
•Eliminators

Tests below are carried out in the SANYO factory.
•Check of external dimensions
•Leak test (vacuum side)
•Hydraulic pressure test for water and steam headers
•Electric insulation resistance test
•Dielectric breakdown test
•Function test only for electric circuit and safety devices
•Performance test (one unit is tested for performance when
several units of the same model are ordered for one project)

Control

(2) Heat exchangers
•High temperature (H.T.) heat exchanger
•Low temperature (L.T.) heat exchanger

2.Factory test

Control panel

(1) Lower shell
•Evaporator and refrigerant dispersion tray
•Absorber and absorbent dispersion tray
•Eliminators

Display

External terminals
(no-voltage normal open contact)

Structure
Parts
Electrical wiring and piping
Installation condition

1.Absorption chiller

Place
Ambient temperature
Ambient humidity
Atmosphere

3 phase 380V 50Hz
(Voltage regulation : within ± 10%)
(Frequency regulation : within ± 5%)
One-section
•Refrigerant temperature supervision
•Chilled water freezing protection
•Chilled water flow switch
•Cooling water temperature supervision
•H.T. generator temperature supervision
•H.T. generator pressure supervision
•H.T. generator solution level supervision
•Crystalization protection
•Motor protection
•Digital PID control by chilled water outlet temperature
•Inverter control of No.1 absorbent pump
Selected by SANYO
Munsell 5Y-7/1
•Operation
: red
•Stop
: green
•Equipment alarm : orange
•LCD

•Operation indication
•Stop indication
•Alarm indication
•Answer back indication
Indoor type
Selected by SANYO
Wiring : 600V grade polyvinyl chloride-insulated wire
Pipe : plicatube (flexible metal conduit)
Indoor
5°C~40°C
Relative humidity : Max. 90% (45°C)
Be sure the following are not present:
•Corrosive gas
•Explosive gas
•Poisonous gas

Option
Outlet : 5°C~12°C
Temperature difference : 3°C~10°C
Changes depending on chilled water temperature
difference (min. flow rate : 50%)
981~1,961kPa (10kg/cm2G~20kg/cm2G)
Max. working press.✕1.5 times
No option
No option
No option
No option

Inlet : 20.0°C~33.0°C
Within the water flow range of each model
981~1,961kPa (10kg/cm2G~20kg/cm2G)
Max. working press.✕1.5 times
Max. 0.196m2 °C/kW (0.0002m2h°C/kcal)
No option
No option
No option
No option
392kPa~784kPa Max. allowable super-heat :10°C
(4kg/cm2G~8kg/cm2G)
Changes depending on the specifications
No option
No option
No option
No option
TUV•ASME
Contact SANYO's representative
Multi-shipment

Cooling water flow switch

No option

No option
No option
No option

No option

No option
No option
No option
No option
No option
No option
No option

47

923

595

CHW inlet
4 inch
COW inlet
5 inch

995

1440(W)

0

350

796

1810 Steam inlet
2 inch

1263

923

595

CHW outlet
4 inch
CHW inlet
4 inch
COW inlet
5 inch

0

1809

COW outlet
5 inch

1975

1440(W)

0

350

1196

1921
1810

Drain outlet
4 inch

Rupture Disk
4 inch
Steam inlet
2 inch

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 35. NE-13 Thru NE-14

0

1263

CHW outlet
4 inch

1974
1809

COW outlet
5 inch

995

195

0

982
900

2200
(H)

2200
(H)

CHW out

195

0

982
900

364
200
180

0

COW in

Wire connection ø33 hole

0

Wire connection ø33 hole

328
323

364
200
180
232

0
0

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

765

0
865

3735(L)

2785(L)

R
70

Figure 34. NE-11 Thru NE-12

0

0
R
70

0
116
207

207
300

2400

2253
2311
2084

1896

COW out

0

1921
1904

341

0

877

0

1904

341

0

877

Rupture Disk
4 inch

(Tube removal space either side)

3400

CHW in

(Tube removal space either side)

329

2916
3096
3116

COW in / out

3264

48
3104

CHW in / out

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

49

1346

1006

603

CHW outlet
5 inch
CHW inlet
5 inch
COW inlet
6 inch

0

350

1319

1840

2106

Drain outlet
1 inch

Rupture Disk
4 inch
Steam inlet
2-1/2 inch

1333
1019

605

CHW outlet
6 inch
CHW inlet
6 inch
COW inlet
8 inch

0

1980

2159
COW outlet
8 inch

1635(W)
Rupture Disk
4 inch
Steam inlet
2-1/2 inch

0

350

1319 Drain outlet
1 inch

1840

2106

2250
(H)

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 37. NE-23 Thru NE-24

0

1964

COW outlet
6 inch

2159

1635(W)

175

0

406

1165
1100

CHW in / out

2250
(H)

175

0

406

1165
1100

438
345

1168
1168

COW in

0
0

COW in

Wire connection ø33 hole

0

0

438
343
Wire connection ø33 hole

411
221
195

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

0

765
1215

4885(L)

3865(L)

COW out

2916
3111
3128
3400

CHW in

0

0

2089

364

0

1003

2089

364

0

1003

(Tube removal space either side)

4500

COW out

(Tube removal space either side)

3104
3936

390
212
195
0

205
350

205
350

70
0
0

R
R
70

3289
4131

CHW out

4309

50
4124

Figure 36. NE-21 Thru NE-22

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

51

1066

611

CHW inlet
6 inch
COW inlet
8 inch

1755(W)

218

Rupture Disk
4 inch

0

350

Drain outlet
1440 1-1/2 inch

1910 Steam inlet
3 inch

2340

1142

577

CHW inlet
6 inch

COW inlet
8 inch

0

1613

CHW outlet
6 inch

2600
2383

COW outlet
8 inch

1975(W)

0

350

Drain outlet
1480 1-1/2 inch

205

0

458

2600
(H)

220

0

407

1321
1250

COW in

Wire connection ø33 hole

250
245

492
488
370
CHW in / out

0

COW in

1190

Wire connection ø33 hole

1190

0
4940(L)

4930(L)

00

CHW in / out

R

70

R7

1256
1200

2390
(H)

Rupture Disk
4 inch
2060 Steam inlet
3 inch

2531

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 39. NE-41 Thru NE-42

0

1476

CHW outlet
6 inch

2390
2198

COW outlet
8 inch

1256

1321
1250

COW out

4500

0

2323

396

0

1078

COW out

4500
(Tube removal space either side)

0

2513

538

0

1132

(Tube removal space either side)

3886

3886

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

0

0

3766

3766

0

492
276
244
478
407

4131

4130

396

220
335
411

0
0

4336

52
4354

Figure 38. NE-31 Thru NE-32

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

53

4508

1170
651

CHW inlet
8 inch
COW inlet
12 inch

C

5246

4748

4206

D

5522

5024

4482
5725
6225

5100
5600

2300(W)

L
5185

E
4600

0

350

1665 Drain outlet
2 inch

Steam inlet
2360 4 inch

4966

5256

1315
753

CHW inlet
10 inch
COW inlet
14 inch

0

2025

5781

CHW outlet
10 inch

5491

C
4756

3050

4826
5351

NE-62
NE-63

B
4466

COW outlet
14 inch

A
4326

Model
NE-61

6099

5574

5076

D

6335
6865

5700
6200

2500(W)

L
5840

E
5200

0

450

1785 Drain outlet
2-1/2 inch

Steam inlet
2670 5 inch

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 41 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 41. NE-61 Thru NE-63

0

1760

CHW outlet
8 inch

5006

2635

4378
4876

NE-52
NE-53

B
3966

COW outlet
12 inch

A
3836

Model
NE-51

1321
1250

3330
(H)

2900
(H)

320

0

1750
1700

COW out

421

400

0

1870
1800

COW out

1971

2930

L

Wire connection ø41 hole

CHW in / out

L

Wire connection ø33 hole

CHW in / out

463

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

1870
1800

2054

560
265
240
0
130
0

622
310
295
0
140
0

0
220
411

0
250
406

R7
00

3260

54
R7
00

Figure 40. NE-51 Thru NE-53

E

684

E

736

0

2855
2825

410

0

1515

Rupture Disk
6 inch

0

Rupture Disk
3286 6 inch
3260

500

0

1635

(Tube removal space either side)

AB C D

COW in

(Tube removal space either side)

AB C D

COW in

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

55

3050

1960
1335

5451

NE-73

COW outlet
16 inch

CHW outlet
12 inch
CHW inlet
12 inch

0

735
450

5091
6121

5621
7460

7000

3000(W)

6960

6500

L
6430

D
6000

547

0

5091

2040
1430

757

CHW outlet
14 inch
CHW inlet
14 inch
COW inlet
16 inch

0

450

3330

5591

COW outlet
16 inch

4951
5451

NE-81
NE-82

B

2610
2400

A

6960
7460

6500
7000

5621
6121

3200(W)

L

D

C

1200

Model

0

1982 Drain outlet
3 inch

Steam inlet
2900 6 inch

3650
(H)

3450
(H)

1892 Drain outlet
3 inch

Steam inlet
2730 6 inch

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 41 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 43. NE-81 Thru NE-82

COW inlet
16 inch

5591

4951

NE-72

C
5096

2410
2200

B

1100

4566

A
4426

Model
NE-71

0
146

0

3395

Rupture Disk
6 inch

0

3587

0

1200
1006

2600
2370

CHW in / out

Rupture Disk
6 inch

0

1100
920

2180

COW out

COW out

663

CHW in / out

690

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 41 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

0

0
189

555

990
786
710

990
785
710

0
140
0

0
140

L

00
R7

Wire connection ø41 hole

L

Wire connection ø41 hole

R

7

00

3710

56
3710

4044

Figure 42. NE-71 Thru NE-73

C

D

0

C

D

0

0

3560

425

(Tube removal space either side)

AB

COW out

2185

3370

440

0

2005

(Tube removal space either side)

AB

COW in

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

57

4044

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Foundation dimensional data (NE)

Control panel (NE)

Figure 44. NE-11 Thru NE-42

Figure 45. NE-51 Thru NE-82

A
A
B

F

F

B
SETTING

H Generator temp
BB

C

#1 ABS PUMP

K

#2 ABS PUMP

C

J

MODE
OPERATION

REMOTE

STOP

LOCAL

PURGE PUMP

150

150

Table 11. Indication lamp

symbol

Name
Running(Operation) indication lamp
Stop indication lamp
Alarm indication lamp

Lamp color
Red
Green
Orange

Remote / Local select button with lamp
Mode select button with lamp
Data display

Red
Red
LED

5. Surface of foundation should be made flat.
6. Anchor bolts and nuts are supplied by customer.

1200

Figure 46. Control panel

Table 10. Dimensional data
Dimensions (mm)

Oper.

AA

BB

A

B

C

D

E

F

G

J

K

NE-11

4,200

2,100

2,100

1,896

—

175

350

900

150

1,200

150

1,000

NE-12

4,400

2,200

2,200

1,896

—

175

350

900

150

1,200

150

1,000

NE-13

5,500

2,700

2,750

2,916

—

175

350

900

150

1,200

150

1,000

NE-14

5,700

2,850

2,850

2,916

—

175

350

900

150

1,200

150

1,000

NE-21

6,800

3,400

3,400

2,916

—

175

350

1,100

150

1,400

150

1,200

NE-22

7,100

3,550

3,550

2,916

—

175

350

1,100

150

1,400

150

1,200

NE-23

8,400

4,200

4,200

3,939

—

175

350

1,100

150

1,400

150

1,200

NE-24

8,800

4,400

4,400

3,939

—

175

350

1,100

150

1,400

150

1,200

NE-31

10,800

5,400

5,400

3,886

—

200

400

1,200

150

1,500

200

1,300

NE-32

11,200

5,600

5,600

3,886

—

200

400

1,200

150

1,500

200

1,300

NE-41

13,200

6,600

6,600

3,886

—

200

400

1,250

150

1,550

200

1,350

NE-42

13,600

6,800

6,800

3,886

—

200

400

1,250

150

1,550

200

1,350

NE-51

18,800

9,400

9,400

3,966

130

190

510

1,700

180

2,060

250

1,800

NE-52

20,400

10,200

10,200

4,508

130

190

510

1,700

180

2,060

250

1,800

NE-53

21,900

10,950

10,950

5,006

130

190

510

1,700

180

2,060

250

1,800

NE-61

26,600

13,300

13,300

4,466

140

210

560

1,800

180

2,160

300

1,900

NE-62

28,500

14,250

14,250

4,966

140

210

560

1,800

180

2,160

300

1,900

NE-63

30,500

15,250

15,250

5,491

140

210

560

1,800

180

2,160

300

1,900

NE-71

36,200

18,100

18,100

4,566

140

210

560

2,200

180

2,560

300

2,300

NE-72

38,200

19,100

19,100

5,091

140

210

560

2,200

180

2,560

300

2,300

NE-73

40,500

20,250

20,250

5,591

140

210

560

2,200

180

2,560

300

2,300

NE-81

43,600

21,800

21,800

5,091

140

210

560

2,400

180

2,760

300

2,500

NE-82

46,100

23,050

23,050

5,591

140

210

560

2,400

180

2,760

300

2,500

300

700

100

70

70 70

Weight (kg)

Model
No.

Steam control valve
NE-11 thru NE-53 : ø21
NE-61 thru NE-82 : ø27
Power supply
NE-11 thru NE-53 : ø33
NE-61 thru NE-82 : ø41

58

ALARM
BUZZER STOP

J

D

D

NOTES :
1. The base of machine has ø50 hole for anchor bolt.
2. Anchor bolt should be fixed by shown detail drawing.
Washer should be welded with base.(Refer to Figure 21 page32)
3. There should be a drain ditch around the foundation.
4. The floor surface should be made as water proof for ease of
maintenance work.

CHILLER
REF PUMP

BB

E

G

K

AA

E

G

AA

STOP RUN

149.9 °C

Steam shutoff valve ø21
Remote control ø27

59

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Field wiring (NE)
Figure 47. Typical electrical field connection diagram - Steam-fired (NE)

Start/Stop sequence of auxiliary equipments

Start
Start signal

Chilled water pump operates

Cooling water pump
operates and then
cooling tower fan
operates

Diluted operation start

Cooling water pump
stops and cooling
tower fan stops

Stop
To power source
3 Ph,50/60Hz
380V, 400V, 415V, 440V

(52CH)

(52CO)

Stop signal

Machine operates

Operate air conditioners

Chilled water pump stops

Chiller stops entirely

Cooling water
pump interlock

Chilled water
pump interlock

Stop air conditioners

For emergency stop signal
(Those terminals are
connected by jumper)
Remove the jumper
before using
those terminals

For message signal

4Y
1

60

(2)

(3)

(4)

332

331

B

4Y
2
DC/AC 24V

(1)

330

332

330

332

333

331

332

330

A

A

4Y 4Y
1 2

327

326

325

323

324

322

Max. voltage and
Max. current
:AC 250V,0.1A

171
COM

A

333

331

330

332

333

330

A

23
CO

52
CH

52
CO

L

52
CT

Answer back
indication

Chilled
water pump

Cooling water
pump

Remote signal
indication

Cooling tower
fan

L

L

Buzzer signal
indication

L

Operation
indication
Stop
indication

51
CT

51
CO

Alarm
indication

51
CH

Symbols
L   :Indication lamp
51CH:Chilled water pump overcurrent relay
51CO:Cooling water pump overcurrent relay

Terminal strips in the control panel

4Y
1

L

52
CO

The unit can be operated by the following five type signal.
(1)Non-voltage normal open contact(A) for start & stop (DC24V 10mA).
:Wiring the terminal 330 and 333.
(2)Non-voltage normal open contact(A) for start (DC24V 10mA).
:Wiring the terminal 330 and 333.
Non-voltage normal open contact(A) for stop (DC24V 10mA).
:Wiring the terminal 331 and 333.
(3)Non-voltage normal open contact(A) for start (DC24V 10mA).
:Wiring the terminal 330 and 333.
Non-voltage normal close contact(B) for stop (DC24V 10mA).
:Wiring the terminal 331 and 333.
(4)Continuous signal of DC/AC 24V for start & stop.
:Wiring the terminal 330 and 332.(Those terminals are non-polarity.)
(5)Pulse signal of DC/AC 24V for start.
:Wiring the terminal 330 and 332.(Those terminals are non-polarity.)
Signal of DC/AC 24V for stop.
:Wiring the terminal 331 and 332.(Those terminals are non-polarity.)
171

321

320

309

308

307

306

305

304

303

302

301

300

Remote signal

171

L

85

84

171

136

135

10

4

3

2

1

T0

S0

E

R0

Terminal strips in the control panel

51CT :Cooling tower fan overcurrent relay
23CO:Cooling tower fan thermostat

Note
1.Be sure to insert 23CO at the cooling water inlet side.
2.Be sure to wire the 52CH(interlock) between terminals 171 and 136.
3.Be sure to wire the 52CO(interlock) between terminals 171 and 135.
4.Be sure to wire the chilled water pump control relay between terminals 302 and 303
5.Be sure to wire the cooling water pump control relay between terminals 304 and 305.

DC/AC 24V
(5)

61

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Hot water-fired chillers

Typical piping diagram-laying (NE)
Figure 48. Typical piping diagram
Reducing valve
Main steam piping

Safety valve

P

R

P

Steam
shutoff
valve

Air conditioner

Steam
control valve
HC

C

MV

Chilled water
(primary)

Cooling water
thermostat

Tank
about
1m3

P T

By-pass
valve

To boiler
Return
heater

Cooling
water pump

To drain ditch
T : Thermometer

Bypass
valve

Check valve

P T
P T

Supply
header

Water
supply

P T

F pump

Chilled water pump
(secondary)

Bleeder
valve

P : Pressure gauge

F : Flow meter

: Water pump

: Strainer

: Valve

: Valve

: Thermostat

In order to prevent freezing up of chilled water during
diluting operation of chiller, continue the operation of
the chilled water pumps and air conditioner until the
diluting operation is completed.

Cooling cycle schematic
Figure 49. Hot water-fired chillers

Heat sink 1.7

General remarks on piping-laying work
1. Work outside the area surrounded by this line
shall be undertaken at the expense of the owner.
2. Refer to the Dimensions diagrams and specification tables for pipe
connections and diameters.
3. Standard supply steam press. Is 784 kPa (8 kg/cm2G). A reducing
valve and safety valve which blows at 981kPa (10 kg/cm2G) should
be located near the machine as in above diagram if the supply pres
sure is higher than 784kPa (8 kg/cm2G). A pipe should be extended
from this safety valve to release excess steam outdoors.
4. Even if a reducing valve is not required, a strainer, pressure gauge
and drain trap should be provided for each machine near the steam
inlet.
5. The back pressure in the steam drain line should be limited to less
than 49Pa (5 mH2O).
6. Determine the locations of the chilled water pumps and cooling water
pumps in due consideration of the pump’s hydrostatic head.
As standard condition, the machine should not be subject to a
pressure larger than 784kPa (8 kg/cm2G) at any water headers.
7. Concerning the temperature control of cooling water, refer to the
section of “control method of cooling water temperature”.
8. Provide a thermometer and pressure gauge at the outlet and inlet of
cooling water and chilled water.

9. Provide an air vent valve in each of the chilled and cooling water lines
at a point higher than the header for chilled water and cooling water.
10.Lay pipes from the cover of the evaporator and absorber to the drain
ditch.
11. Provide a bleeder in the cooling water line for control of water quality.
12.All external water piping with JIS 10k welding flanges are to be
provided by the customer.
13.Be sure to provide a shut-off valve to prevent the steam flow into the
chiller during shut-down.
In case two or more chillers are installed, provide an automatic
shut-off valve.
14.Be sure to design the location of cooling tower to prevent
contamination of cooling water by exhaust gas from flues.
15.Fix the rupture disk on the chiller according to the manual of rupture
disk, if necessary.
16.The chilled and cooling water pumps should preferably be provided
exclusively for each chillers.
17.Provide expansion tank in the chilled water line.
18.There should be a sufficiently large clearance for easy access to the
evaporator, absorber and condenser, to facilitate inspection and
cleaning work.

Heat 1.0

Hot Water
Condenser
Cooling Water
Generator

Evaporator

Absorber

Chilled Water

Heat Exchanger
Cooling Water
Refrigeration capacity 0.7
Conc. solution

62

Dil. solution

Liq. refrigerant

Vap. refrigerant

Cooling water

Chilled water

Hot water

63

SUPER ABSORPTION

60

Temperature of refrigerant (°C)

Hot water-fired absorption chillers
Chilled water of 8°C can be produced using waste hot water of 80°C to 95°C from gas engine etc. It is a chiller
driven by waste hot water which temperature is low. Waste hot water and unused energy can be effectively used
and it is suitable for combined heat and power system.

0%

40

%

%

45

50

%

50

%

55

60

65

40

100

%

80
%

%
70

30

Pressure(torr)

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

50
40
30
20

20

10
8

10
0
0

10

20

30

40

50

60

70

80

90

5
100

Temperature of absorbent (°C)
◆ LE Model Specification
Model（TSA-LE-＊＊）
Refrigeration
Capacity

Unit

Pressure drop

LE-23

LE-24

LE-31

LE-32

LE-41

LE-42

LE-51

LE-52

LE-53

75

90

110

135

155

180

210

240

270

300

335

375

420

470

525

264

316

387

475

545

633

738

844

949

1,055

1,178

1,319

1,477

1,653

1,846

13 → 8℃
（Fouling factor = 0.088m2℃ / kW（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa（8 kgf / cm2G））

（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa
（8 kgf / cm2G）
）
13 → 8℃
（Fouling factor = 0.088m2 ℃ / kW

3

m /h

18.1

24.2

30.2

45.4

54.4

66.5

81.6

93.7

109

127

145

163

181

203

227

254

284

318

（mH2O）

7.2

9.2

7.3

7.0

7.6

4.5

4.9

4.3

4.7

9.2

9.6

9.5

10.0

9.8

9.7

7.8

3.7

4.9

kPa

71

90

72

69

74

44

48

42

46

90

94

93

98

96

95

76

36

48

0.71

0.76

2-1/2

2-1/2

0.06

0.07

3
0.08

0.11

4
0.13

0.15

5

0.17

0.22

0.24

31 → 37℃
（Fouling factor = 0.088m2℃ / kW（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa（8 kgf / cm2G））

6
0.27

0.30

8

0.33

0.35

0.45

0.48

0.65

（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa
（8 kgf / cm2G）
）
31 → 37℃
（Fouling factor = 0.088m2 ℃ / kW

m3/h

36.5

48.6

60.8

91.1

109

134

164

188

219

255

292

328

365

407

456

510

571

638

（mH2O）

5.2

5.8

10.1

8.9

9.5

5.2

6.4

5.4

6.1

11.1

12.1

9.1

9.5

10.0

11.0

7.0

9.3

12.1

kPa

51

57

99

87

93

51

63

53

60

109

119

89

93

98

108

69

91

119

Holding water volume

m3

Connection (JIS)

LE-22

50

3
0.14

5

0.17

0.20

0.34

0.37

6

0.43

0.47

0.60

8
0.65

88 → 83℃
（Fouling factor = 0.088m2℃ / kW（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa（8 kgf / cm2G））

Hot water system

3 way valve pressure drop

LE-21

176

inch

Holding water volume

LE-14

40

Connection (JIS)

Connection (JIS)

LE-13

141

m3

Pressure drop

LE-12

30

Holding water volume
Cooling water system

Flow rate

LE-11

105

inch

Pressure drop

LE-03

kW

Connection (JIS)

Flow rate

LE-02

（USRT）

Chilled water system
Flow rate

LE-01

0.71

0.79

10
0.99

1.06

1.25

12
1.35

2.02

2.18

2.31

（0.0001m2h℃ / kcal）
・Max. working pressure 784kPa
（8 kgf / cm2G）
）
88 → 83℃
（Fouling factor = 0.088m2 ℃ / kW

kgf/s

7.11

9.47

11.8

17.8

21.3

26.0

31.9

36.7

42.5

49.7

56.7

63.9

71.1

79.2

88.9

99.4

111

124

（mH2O）

4.6

5.6

1.9

1.5

1.7

4.0

4.6

4.1

4.4

2.0

2.2

1.8

2.0

1.6

1.7

1.8

2.3

3.0

kPa

45

55

19

15

17

39

45

40

43

20

22

18

20

16

17

18

23

29

2-1/2

inch

4

5

6

8

m3

0.04

0.05

0.06

0.09

0.10

0.12

0.13

0.17

0.18

0.20

0.22

0.27

0.29

0.34

0.36

0.44

0.48

0.51

（mH2O）

3.9

3.3

5.2

5.8

8.3

3.7

5.5

3.3

4.4

6.0

7.9

6.0

7.4

9.2

11.6

4.6

5.8

7.2

kpa

38

32

51

57

81

36

54

36

43

59

77

59

73

90

114

45

47

71

inch

2

2-1/2

3

4

5

6

8

Overall dimentions
Length (L)

mm

Width

mm

(W)

Height (H)
Tube removal

2,210

2,710

3,720

1,110

mm

1,980

4,850
1,445
2,395

2,225

1,900

mm

3,820

1,295
2,400

3,400

3,400

4,980

5,060

1,515

1,615

2,645

2,905

5,200

5,740

6,240

1,950
3,230

4,500

4,600

5,200

5,700

Weights
Operating LE/NE

kgf

2,300

2,400

2,800

3,900

4,100

5,100

5,400

6,500

6,900

8,000

8,500

10,300

10,800

12,500

13,000

17,700

19,200

20,600

Shipping weight

kgf

2,000

2,100

2,500

3,400

3,500

4,400

4,600

5,500

5,800

6,800

7,100

8,700

9,100

10,400

10,800

14,600

15,900

17,100

Shipping method

1 section

Electric Power
Total electric current
Apparent power

1 section

3 phase 380V 50Hz

3 phase 380V 50Hz

A

7.0

9.7

10.2

12.5

kVA

5.4

7.6

8.0

9.9

kW

1.1

2.2

A

3.7

6.4

kW

0.2

0.2
1.3

Electric data
ABS pump
REF pump

Purge pump

8.7
0.4

A

1.3

kW

0.4

0.4
1.1

1.8

A

1.1

PD cell heater

W

38

38

Control circuit

W

300

300

Note 1）Electric type 3way valve for LE-01 ∼ LE-24
Electric pneumatic type 3way valve for LE-31 ∼ LE-53
（Required operation air : 392kPa
（4.0kg / cm2G）
）

64

3.0

Specifications subject to change without notice.

65

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

The heating
cycle
Scope
of order
(LE)

Scope of supply (LE)
1.Absorption chiller

(2) Heat exchangers
(3) Upper shell
•Generator
•Condenser
•Eliminators

2.Factory test
Tests below are carried out in the SANYO factory.
•Check of external dimensions
•Leak test (vacuum side)
•Hydraulic test for water headers
•Electric insulation resistance test
•Dielectric breakdown test
•Function test only for electric circuit and safety devices
•Performance test of one section shipping unit.
(one unit is tested when several units of the same model are
ordered for one project)

Temperature

Inlet : 13.0°C
Outlet :8.0°C

Flow rate

0.605m3/h•RT

Max. working pressure
Hydraulic test pressure
Fouling factor
Material of tube
Water quality
Structure of water header
Manufacturing standard of water header

784kPa (8kg/cm2G)
Max. working press. +196kPa (2kg / cm2)
0.088m2 °C/kW (0.0001m2h°C/kcal)
Copper tube
Refer to JRA-GL02E-1994
Removal type
SANYO standard
Inlet : 31°C
Outlet : 37°C
1.215m3/h•RT
784kPa (8kg/cm2G)
Max. working press. +196kPa (2kg / cm2)
0.088m2 °C/kW (0.0001m2h°C/kcal)
Copper tube
Refer to JRA-GL02E-1994
Removal type
SANYO standard
Inlet : 88°C
Outlet : 83°C
1.215m3/h•RT
784kPa (8kg/cm2G)
1,471kPa (15kg/cm2G)
Material : Copper
Refer to JRA-GL02E-1994
Removal type
Japanese pressure vessel code
3 phase 380V 50Hz
(Voltage regulation : within ± 10%)
(Frequency regulation : within ± 5%)
One-section

(1) Unloading, transportation, and insurance depend on the
individual sales contractor between your company and SANYO
group.

(5) Control panel
•CE marking (if requested according to the regulation).

(2)Foundations with foundation bolts.

(6) Hot water control valve

(3) External chilled water, cooling water, and hot water piping
work including various safety valves. isolating valves, etc.

(7) Locally mounted controls and electric parts
•Temperature sensor
(8) Purge unit
•Purge tank
•Ejector and liquid trap
•Piping and various manual valves
•Palladium cell with heater

(4) Rupture disk, flange of rupture disk, bolts, nuts, piping work
and tank, etc, if necessary.

Flow rate
Max. working pressure
Hydraulic test pressure
Fouling factor
Material of tubes
Water quality
Structure of water header
Manufacturing standard of water header
Temperature

Hot water

3.Scope of supply of the purchaser

Cooling water

Temperature

(4) Pumps
•Absorbent pump(s) with isolating valves
•Refrigerant pump with isolating valves
•Purge pump

(5) External wiring and piping for the chillers including
necessary parts.

Flow rate
Max. working pressure
Hydraulic test pressure
Material of tubes
Water quality
Structure of water header
Manufacturing standard of water header

Electricity

(6) Insulation for the chillers including necessary parts.

(11) Painting
•Main unit: Rust preventive paint
•Control panel: Finish paint
(14) Accessories
•Operation manual : One set
•Washer (for fixing foundation bolts) : One set
•Manometer : One piece
•Gasket and sealant for rupture disk : One set
(if requested according to the regulation).

Safety functions

(8) Finish painting of the chiller.
Capacity control

(9) Cooling water inlet temperature control device.

Parts
Painting

(10) Furnishing electric wiring/piping of hot water control valve
including necessary parts.
(11) Various temp./press. gauges for water lines.
(12) Cooling tower(s), chilled water pump(s) , cooling water
pump(s) and hot water pump(s) and it’s auxiliary accessaries.

Indication lamps
Control panel

(10) Initial charge
•Absorbent (lithium bromide)
•Refrigerant
•Inhibitor

(7) Mating flanges, gaskets, bolts and nuts
•Inlet/outlet nozzle flanges for chilled water. (evaporator)
•Inlet/outlet nozzle flanges for cooling water. (absorber/condenser).
•Inlet/outlet nozzle flanges for hot water. (generator)

Control

Shipment

(9) Interconnecting piping and wiring

Display

External terminals
(no-voltage normal open contact)

Option

Standard

Item
Chilled water

(1) Lower shell
•Evaporator and refrigerant dispersion tray
•Absorber and absorbent dispersion tray
•Eliminators

•Refrigerant temperature supervision
•Chilled water freeze protection
•Chilled water floe switch
•Cooling water temperature supervision
•Generator temperature supervision
•Crystallization protection
•Motor protection
•Digital PID control by chilled water outlet temperature
•Inverter control of No.1 absorbent pump
Selected by SANYO
Munsell 5Y-7/1
•Operation
: red
•Stop
: green
•Equipment alarm : orange
•LCD
•Operation indication
•Stop indication
•Alarm indication
•Answer back indication

Outlet : 6°C~12°C
Temperature difference : 3°C~10°C
Changes depending on chilled water temperature
difference (min. flow rate : 50%)
981~1,961kPa (10 ~ 20kg/cm2G)
Max. working press.✕1.5 times
0.196m2 °C/kW (0.0002m2h°C/kcal)
No option
No option
No option
No option
Inlet : 20.0°C~33.0°C
Within the water flow range of each model
981~1,961kPa (10 ~ 20kg/cm2G)
Max. working press.✕1.5 times
0.196m2 °C/kW (0.0002m2h°C/kcal)
No option
No option
No option
No option
Intel : 80°C~95°C
Within the water flow range of each model
No option
No option
No option
No option
No option
No option
Contact SANYO's representative
Multi-shipment

Cooling water flow switch

No option
No option
No option
No option

No option

(13) Electric power supply (specified value).

(15) Necessary tools, workers and materials for installation and
site test operation.
(16) After-sales service and periodical maintenance of the chillers.

Electrical wiring and piping
Installation condition

(14) Supply of chilled water, cooling water and hot water at rated
conditions.

Structure
Parts

Place
Ambient temperature
Ambient humidity
Atmosphere

Indoor type
Selected by SANYO
Wiring : 600V grade polyvinyl chloride-insulated wire
Pipe : plicatube (flexible metal conduit)
Indoor
5°C~40°C
Relative humidity : Max. 90% (45°C)
Be sure the following are not present:
•Corrosive gas
•Explosive gas
•Poisonous gas

No option
No option
No option
No option
No option
No option
No option
No option

(17) Any other item not specifically mentioned in the scope of
supply.

66

67

1426
1926

LE-02
LE-03

B

2066

1566

1566

C
D

510

COW inlet
3 inch

1900
2400

2210
2710

HTW outlet

1110(W)

K
1900

L
2210

0

1275

911

595

CHW outlet
3 inch
CHW inlet
3 inch
COW inlet
5 inch

0

1611

1995

2203
2125

HTW inlet
4 inch

Rupture Disk
4 inch
HTW outlet
4 inch
COW outlet
5 inch

910
882

0

300

HTW outlet

1295(W)

0

300

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 51. LE-11 Thru LE-12

860

CHW inlet
2-1/2 inch

0

1150

CHW outlet
2-1/2 inch

1958
1880
1770

2187

1687

1687

1480

2091

1591

1591

HTW inlet
2-1/2 inch

Rupture Disk
4 inch
HTW outlet
2-1/2 inch
COW outlet
3 inch

A
1426

Model

860

LE-01

200

2225
(H)

1980
(H)

800

230

0

Wire connection ø33 hole

0
20

CHW inlet / outlet

0

165

Wire connection ø33 hole

CHW outlet

145

0

640

800

L

R5
00

900
735

415

K

HTW outlet

COW inlet / outlet

CTW inlet

HTW inlet

HTW outlet

(Tube removal space either side)

2400

HTW inlet

BCD

(Tube removal space either side)

A

COW inlet / outlet

2710(L)

R5
00

630

200

160
0

0
0

1896

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

2076
2096

68
2249

Figure 50. LE-01 Thru LE-03

0

780

0

136

750

0

0

785

2085

715

1840

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

69

911
595

CHW inlet
3 inch
COW inlet
5 inch

HTW outlet

1295(W)

200

0

300

1185

LE-24

B

3936

3936

2916

2916

C

1346
1006
605

CHW outlet
5 inch
CHW inlet
5 inch
COW inlet
6 inch

0

1724

2373
2295
2135

4129

4129

3109

3109

HTW inlet
5 inch

Rupture Disk
4 inch
HTW outlet
5 inch
COW outlet
6 inch

735
1185

LE-22
LE-23

A
735

4850

4148

HTW outlet

K

4500

4500

3400

3400

1455(W)

3820
4850

3128
4148

L
3820

D
3128

1090
1065

Model

251

LE-21

0

300

2395
(H)

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 53. LE-21 Thru LE-24

1275

CHW outlet
3 inch

0

1611

2203
2125
1995

HTW inlet
4 inch

Rupture Disk
4 inch
HTW outlet
4 inch
COW outlet
5 inch

910
882

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

0

2225
(H)

800

HTW inlet
CHW outlet

HTW outlet

Wire connection ø33 hole

0
125

740

1000

COW inlet

CHW outlet
HTW inlet

HTW outlet

Wire connection ø33 hole

0
145

640

0

415

415
COW inlet

0

0

0
353
200
180
0

403
212
195

735

A

0
R5
0

R5
00

70
L

3720(L)

3400

K

COW outlet

CHW inlet

22
0

926

COW outlet

CD
COW inlet

(Tube removal space either side)

B

2916

0

780

0

835

2255

(Tube removal space either side)

3096
3116

Figure 52. LE-13 Thru LE-14

0

785

2085

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

71

1476
1066

611

CHW outlet
6 inch
CHW inlet
6 inch
COW inlet
8 inch

1170
1156

1515(W)

HTW outlet

1613

1142

577

CHW outlet
8 inch
CHW inlet
8 inch

COW inlet
10 inch

0

2090

2595

2883
2805

HTW inlet
8 inch

Rupture Disk
4 inch
HTW outlet
8 inch
COW outlet
10 inch

1255
1221

0

300

2645(H)

HTW outlet

1615(W)

0

300

2905
(H)

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 55. LE-41 Thru LE-42

0

1918

2623
2545
2365

HTW inlet
6 inch

Rupture Disk
4 inch
HTW outlet
6 inch
COW outlet
8 inch

250

COW inlet

Wire connection ø33 hole

CHW outlet

CHW outlet

HTW outlet

0
120

815

1150

390

Wire connection ø33 hole

HTW outlet

0
105

790

0
479
250
244
0
530

0
274

390

1100

COW inlet

R

50

1160

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

0

0
276
244
0

0
50
R

0

5060(L)

4980(L)

3886

4500

64
0

976

4500

HTW inlet
CHW inlet

COW outlet

HTW inlet
CHW inlet

0

840

2750

50
0

1036

0

815

2500

(Tube removal space either side)

COW outlet

(Tube removal space either side)

4130
4136
3886

72
4130
4162

Figure 54. LE-31 Thru LE-32

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

73

1160

1760

1170

651

CHW outlet
8 inch
CHW inlet
8 inch
COW inlet
12 inch

HTW outlet

1950(W)

0

300

3230
(H)

4876

LE-53

B
5006

4508

C

1760

1170

651

CHW outlet
8 inch
CHW inlet
8 inch
COW inlet
12 inch

0

2304

2897

3208
3130

5251

4753

HTW inlet
8 inch

Rupture Disk
4 inch
HTW outlet
8 inch
COW outlet
12 inch

A
4378

Model
LE-52

6240

5740

L

1950(W)

HTW outlet

5700

5200

K

0

300

3230
(H)

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

Figure 57. LE-52 Thru LE-53

0

2304

2897

3208
3130

HTW inlet
8 inch

Rupture Disk
4 inch
HTW outlet
8 inch
COW outlet
12 inch

1701
1701

COW inlet

CHW outlet

Wire connection ø33 hole

HTW outlet

0
20

1040

1600

430

Wire connection ø33 hole

HTW outlet

0
20

1040

240

1600

430

NOTES
1. Dimensions (L), (W), (H) are for the unit with rupture disk.
The dimensions are changed if additional parts are added.
2.
indicates the position of anchor bolts.
3. All external water piping with welded JIS 10K flanges are to be provided by
the customer.
4.
indicates the position of the power supply connection on control panel.
(diameter 33 mm)
5. Service space:
Longitudinal distance
– 1000 mm
Top
– 200 mm
Others
– 500 mm
6. Regarding fuel connection diameter and position, refer to specifications.

550

450
450

0
130
0
0
130

COW inlet

CHW inlet / outlet

0

0
0

550
240

1150

1150
R5

0
R5
0
00

74
L

5200(L)

3886
3966

4600

CHW inlet

K

0

C
COW outlet

HTW inlet

0

905

3075

173
0

1340

905

3075

173
0

1340

(Tube removal space either side)

AB

COW outlet

HTW inlet

(Tube removal space either side)

4206
4211

Figure 56. LE-51

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

75

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Foundation dimensional data (LE)

Control panel (LE)

Figure 58. LE-01 Thru 53
A
B

F

B

SETTING

Generator temp

RUN

69.9°C

CHILLER

ALARM

REF PUMP

BUZZER STOP

ABS PUMP

MODE

BB

C

OPERATION

REMOTE

STOP

LOCAL

PURGE PUMP

K

E

G

AA

STOP

J
D

symbol

150

Table 13. Indication lamp

NOTES :
1. The base of machine has ø50 hole for anchor bolt.
2. Anchor bolt should be fixed by shown detail drawing.
Washer should be welded with base.(Refer to Figure 21 page32)
3. There should be a drain ditch around the foundation.
4. The floor surface should be made as water proof for ease of
maintenance work.
5. Surface of foundation should be made flat.
6. Anchor bolts and nuts are supplied by customer.

Name
Running(Operation) indication lamp
Stop indication lamp
Alarm indication lamp

Lamp color
Red
Green
Orange

Remote / Local select button with lamp
Mode select button with lamp
Data display

Red
Red
LCD

Figure 59. Control panel

500

Table 12. Dimensional data
Dimensions (mm)
BB

A

B

C

D

E

F

G

J

K

LE-01

2,300

1,150

1,150

1,426

—

113

226

800

100

1,000

125

900

LE-02

2,400

1,200

1,200

1,426

—

113

226

800

100

1,000

125

900

LE-03

2,800

1,400

1,400

1,926

—

113

226

800

100

1,000

125

900

LE-11

3,900

1,950

1,950

1,896

—

125

250

800

100

1,000

150

900

LE-12

4,100

2,050

2,050

1,896

—

125

250

800

100

1,000

150

900

LE-13

5,100

2,550

2,550

2,916

—

125

250

800

100

1,000

150

900

LE-14

5,400

2,700

2,700

2,916

—

125

250

800

100

1,000

150

900

LE-21

6,500

3,250

3,250

2,916

—

125

250

1,000

100

1,200

150

1,100

LE-22

6,900

3,450

3,450

2,916

—

125

250

1,000

100

1,200

150

1,100

LE-23

8,000

4,000

4,000

3,936

—

125

250

1,000

100

1,200

150

1,100

LE-24

8,500

4,250

4,250

3,936

—

125

250

1,000

100

1,200

150

1,100

LE-31

10,300

5,150

5,150

3,886

—

150

300

1,100

100

1,300

200

1,200

LE-32

10,800

5,400

5,400

3,886

—

150

300

1,100

100

1,300

200

1,200

LE-41

12,500

6,250

6,250

3,886

—

150

300

1,150

100

1,350

200

1,250

LE-42

13,000

6,500

6,500

3,886

—

150

300

1,150

100

1,350

200

1,250

LE-51

17,700

8,850

8,850

3,966

130

110

350

1,600

100

1,800

250

1,700

LE-52

19,200

9,600

9,600

4,508

130

110

350

1,600

100

1,800

250

1,700

LE-53

20,600

10,300

10,300

5,006

130

110

350

1,600

100

1,800

250

1,700

Hot water control valve
ø21 (LE-01 thru LE-12)
ø27 (LE-13 thru LE-24)
ø21 (LE-31 thru LE-53)
Power supply ø33

76

Remote control ø27

30

AA

300

Oper.

1400

Weight (kg)

Model
No.

77

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Field wiring (LE)
Start/Stop sequence of auxiliary equipments

Figure 60. Typical electrical field connection diagram - Hot water-fired (LE)

Start
Start signal

Chilled water pump operates

Cooling water pump
operates and then
cooling tower fan
operates

Machine operates

Operate air conditioners

Diluted operation start

Cooling water pump
stops and cooling
tower fan stops

Chilled water pump stops

Chiller stops entirely

Stop
Stop signal

(52CH)

(52CO)

To power source
3 Ph, 50/60Hz
380V, 400V, 415V, 440V

Cooling water
pump interlock

Chilled water
pump interlock

Stop air conditioners

For emergency stop signal
(Those terminals are
connected by jumper)
Remove the jumper
before using
those terminals

For message signal

346

345

327

326

325

324

323

322

321

320

309

308

307

306

305

304

303

302

301

300

85

84

171

136

135

10

4

3

2

1

T0

S0

E

R0

Terminal strips in the control panel

Remote signal
The unit can be operated by the following five type signal.
(1)Non-voltage normal open contact(A) for start & stop (DC24V 10mA).
:Wiring the terminal 330 and 333.
(2)Non-voltage normal open contact(A) for start (DC24V 10mA).
:Wiring the terminal 330 and 333.
Non-voltage normal open contact(A) for stop (DC24V 10mA).
:Wiring the terminal 331 and 333.
(3)Non-voltage normal open contact(A) for start (DC24V 10mA).
:Wiring the terminal 330 and 333.
Non-voltage normal close contact(B) for stop (DC24V 10mA).
:Wiring the terminal 331 and 333.
(4)Continuous signal of DC/AC 24V for start & stop.
:Wiring the terminal 330 and 332.(Those terminals are non-polarity.)
(5)Pulse signal of DC/AC 24V for start.
:Wiring the terminal 330 and 332.(Those terminals are non-polarity.)
Signal of DC/AC 24V for stop.
:Wiring the terminal 331 and 332.(Those terminals are non-polarity.)

Max. voltage and
Max. current
:AC 250V,0.1A

52
CO

Terminal strips in the control panel
171

171

A

4Y
1

A

A

4Y 4Y
1 2

A

4Y
1

78

(2)

332

331

B

4Y
2
DC/AC 24V

(1)

330

332

330

332

333

331

330

332

333

331

330

332

330

333

COM

171

(3)

DC/AC 24V

23
CO

51
CO
52
CT

Cooling water
pump

Remote signal
indication

Cooling tower
fan

Symbols
L  :Indication lamp
51CH:Chilled water pump overcurrent relay
51CO:Cooling water pump overcurrent relay

L

L

L

L

52
H

Hot water
pump

L

Buzzer signal
indication

52
CO

Operation
indication
Stop
indication

52
CH

51
H

Alarm
indication

L

Chilled
water pump

51
CT

Answer back
indication

51
CH

51CT :Cooling tower fan overcurrent relay
51H :Hot water pump overcurrent relay
23CO:Cooling tower fan thermostat

Note
1.Be sure to insert 23CO at the cooling water inlet side.
2.Be sure to wire the 52CH(interlock) between terminals 171 and 136.
3.Be sure to wire the 52CO(interlock) between terminals 171 and 135.
4.Be sure to wire the chilled water pump control relay between terminals 302 and 303.
5.Be sure to wire the cooling water pump control relay between terminals 304 and 305.
6.Be sure to wire the hot water pump control relay between terminals 345 and 346.

(4)

79

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SUPER ABSORPTION

Typical piping diagram-laying (LE)
Figure 61. Typical piping diagram

Hot water
3 way valve

Cooling
tower

Hot water
Pump

Air
Conditioner

P

T

Make up
water

P T
C

C

P T

Primary
F Chilled water pump

P T
P T

Secondary
Chilled
Water pump

Air vent

Bypass valve
P T

Tank
above
1m3

Return
Header

Supply
Header

Cooling water pump
To drain

To drain

T

: Thermometer

P

Utility

: Pressure gauge

F

: Flow meter

: Water pump

: Strainer

: Valve

: Valve

: Thermostat

1.Unit selection tables
2.Pressure drop curves
3.Installation and application data
4.Management of cooling water quality
5.Installation examples

In order to prevent freezing up of chilled water when the chilled water
gets a stop signal, continue the operation of the primary chilled water
pump and secondary chilled water pump and air conditioner during
dilution cycle operation of the chillers.

General remarks on piping work
1. Work outside the area surrounded by this line
shall be undertaken at the expense of the owner.
2. Refer to the Dimensions diagrams and specification tables for pipe
connections and diameters.
3. Determine the locations of the chilled, cooling and hot water pump in
due consideration of the pump’s hydrostatic head.
As standard condition, the machine should not be subject to a
pressure larger than 8 kg/cm2G. at any water headers.
4. Concerning the temperature control of cooling water, refer to the
section of ”control method of cooling water temperature”.
5. Provide a thermometer and a pressure gauge at the outlet and inlet
of cooling water temperature.

80

6. Provide an air vent valve in each of the chilled, cooling and hot water
lines at a point higher than the header for chilled, cooling and hot
waters.
7. Lay pipes from the cover of the evaporator, absorber and generator
to drain ditch.
8. Provide a bleeder in the cooling water line for control of water quality.
9. All external water piping are to be provided with JIS 10k welding flanges
by the customer.
10.Be sure to design the location of cooling tower to prevent
contamination of cooling water by exhaust gas from flues.

81

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Capacity ratings (DE and NE)

Capacity ratings (LE)
Table 15. Capacity factor (LE)

Table 14. Capacity factor (DE and NE)
Chilled water temperature
Outlet temp.

5.0

6.0

7.0

8.0

Inlet temp.

28

29

30

31

32

33

8.0

0.826

0.803

0.780

0.753

0.716

0.634

9.0

0.883

0.859

0.834

0.805

0.766

0.678

10.0

0.922

0.898

0.871

0.841

0.800

0.708

11.0

0.940

0.915

0.888

0.857

0.815

0.721

12.0

0.957

0.932

0.904

0.873

0.830

0.735

8.0

0.929

0.904

0.877

0.847

0.806

0.713

9.0

0.993

0.966

0.938

0.905

0.861

10.0

1.038

1.010

0.980

0.946

11.0

1.050

1.029

0.999

12.0

1.050

1.048

8.0

1.032

9.0

COW inlet

CHW ∆T = 5 deg
Hot water outlet (°C)

CHW outlet

80.0

81.0

82.0

83.0

84.0

85.0

80.0

81.0

82.0

83.0

84.0

85.0

6.0

1.046

1.092

1.137

1.183

1.228

1.272

1.066

1.112

1.158

1.204

1.249

1.294

7.0

1.111

1.156

1.202

1.247

1.291

1.300

1.132

1.178

1.223

1.268

1.300

1.300

8.0

1.176

1.221

1.266

1.300

1.300

1.300

1.198

1.243

1.288

1.300

1.300

1.300

6.0

0.934

0.980

1.027

1.073

1.119

1.164

0.953

1.000

1.047

1.093

1.139

1.185

7.0

0.999

1.046

1.092

1.137

1.182

1.227

1.019

1.066

1.112

1.158

1.204

1.249

0.762

8.0

1.065

1.111

1.156

1.201

1.246

1.291

1.085

1.132

1.177

1.223

1.268

1.300

0.900

0.797

6.0

0.820

0.868

0.915

0.962

1.008

1.055

0.837

0.886

0.934

0.981

1.028

1.074

0.964

0.917

0.812

7.0

0.886

0.934

0.980

1.027

1.073

1.118

0.905

0.953

1.000

1.047

1.093

1.139

1.017

0.982

0.934

0.827

8.0

0.953

0.999

1.046

1.091

1.137

1.182

0.972

1.019

1.066

1.112

1.158

1.203

1.004

0.975

0.941

0.895

0.792

6.0

0.703

0.753

0.802

0.850

0.897

0.944

0.719

0.769

0.819

0.867

0.915

0.963

1.050

1.050

1.042

1.006

0.957

0.847

7.0

0.771

0.820

0.868

0.915

0.962

1.008

0.788

0.837

0.886

0.934

0.981

1.028

10.0

1.050

1.050

1.050

1.050

1.000

0.885

8.0

0.838

0.886

0.934

0.980

1.027

1.073

0.856

0.905

0.953

1.000

1.047

1.093

11.0

1.050

1.050

1.050

1.050

1.019

0.902

6.0

0.583

0.635

0.685

0.735

0.784

0.832

0.597

0.649

0.701

0.751

0.801

0.849

12.0

1.050

1.050

1.050

1.050

1.038

0.919

7.0

0.653

0.703

0.753

0.802

0.850

0.897

0.668

0.719

0.770

0.819

0.867

0.915

8.0

1.050

1.046

1.016

0.980

0.933

0.825

8.0

0.722

0.771

0.820

0.868

0.915

0.962

0.738

0.788

0.838

0.886

0.934

0.981

9.0

1.050

1.050

1.050

1.048

0.997

0.883

10.0

1.050

1.050

1.050

1.050

1.042

0.922

11.0

1.050

1.050

1.050

1.050

1.050

0.940

12.0

1.050

1.050

1.050

1.050

1.050

0.957

28.0

29.0

30.0

31.0

32.0

CHW ∆T = 6 deg
COW inlet

XXXX

CHW ∆T = 4 deg
Hot water outlet (°C)

Cooling water inlet temperature (°C)

Note :
1) Cooling water temperature difference : 5.5°C constant
2) The table is used only for the purpose of presuming the capacity factor.
3) In DE model, the proper flow rate of hot water is required in case of heating mode.
It requires proper consumption of hot water for required cooling capacity.
4) Please contact your SANYO representative, if your request is not indicated in the table.

CHW outlet

28.0

29.0

30.0

31.0

32.0

Graph 11. Cooling capacity and steam pressure
(steam-fired chillers)

Hot water outlet (°C)
80.0

81.0

82.0

83.0

84.0

85.0

6.0

1.084

1.131

1.177

1.223

1.268

1.300

7.0

1.151

1.197

1.243

1.288

1.300

1.300

8.0

1.217

1.263

1.300

1.300

1.300

1.300

6.0

0.970

1.017

1.065

1.111

1.158

1.204

7.0

1.037

1.084

1.131

1.177

1.223

1.268

8.0

1.104

1.151

1.197

1.242

1.288

1.300

6.0

0.853

0.902

0.950

0.998

1.046

1.092

7.0

0.921

0.970

1.017

1.064

1.111

1.158

8.0

0.989

1.037

1.084

1.131

1.177

1.223

6.0

0.733

0.784

0.834

0.883

0.932

0.980

7.0

0.803

0.853

0.902

0.950

0.998

1.045

8.0

0.872

0.921

0.970

1.017

1.064

1.111

6.0

0.661

0.714

0.765

0.815

0.865

7.0

***

0.680

0.733

0.784

0.834

0.883

0.932

8.0

0.752

0.803

0.853

0.902

0.950

0.998

Note :
1) Cooling water temperrature difference : 6°C constant
Hot water temperature difference
: 5°C constant
2) The table is used only for the purpose of presumpting
the capacity factor.
3) It requires proper consumption of hot water for required
cooling capacity.
4) Please contact your SANYO representative, if your
request is not indicated in the table.
” mark means out of operation condition.
5) ”

***

100

Graph 12. Partial load characteristics
110
90

80

e
inv

er
nv
oi

ter

w/

70

COP (%)

Cooling capacity(%)

w/

90
80

Adoption of the controlling circulation amount of the solution
In order to have a stable and effective operation under the wide range of
hot water temperature given, absorbent pump driven by an inverter controls the optimal operation. This control is that hot water is effectively
utilized to regenerate the refrigerant instead of heating up the solution
not attributed to the cooling capacity at the partial load.

r
r te

100

70

Features;
1. To shorten the start-up period in time.
2. To prevent the excessive heat rejection to the cooling water system.
Even if the heating amount of heat source becomes less, the unit can
operate without fail by means of the procedure that the input is almost
rejected to cooling water.
3.To improve COP at the partial load due to less input.

60
50
40

60

30
4

5

6

7

Supply steam pressure(Kg / cm2G)
Selection condition
1) Chilled water 12°C
2) Cooling water 32°C

82

8

20
10
0

7°C
37.5°C

0

10

20

30

40

50

60

70

80

90

100

Load (%)

83

84
Pressure drop (kPa)
Pressure drop (kPa)

30

40

50

60

70

80

90

100

200

300

20

30

40

50

60

70

80

90

100

200

30

Graph 14.

30

Graph 13.

40

50
60
70
80
90
100

12
13

14
21

50

60

70

80

90

100

Cooling water pressure drop curve (DE and NE)

40

11

Chilled water pressure drop curve (DE and NE)

200

23

24

200

13

14

Flow rate (m3/h)

11

12

Flow rate (m3/h)

22

300

300

31

32

22

21

400

24

23

400

41 42

31

500

32

500

53
52
51

41

600

42

600

700

700

63
62
61

82
81

800

53
52
51

900 1000

63
62
61

800 900 1000

73
72
71

73
72
71

82
81

2000

2000

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

85

20
10

30

40

50

60

70

80

90

Pressure drop (kPa)

86
100

200

Graph 15.

20
20

30

40

50

60

70

80

90

100

200

Graph 16.

20
30
40

03

50

60

12

11

30

40

50

60

01

70

80

02

03

Cooling water pressure drop curve (LE)

02

01

Chilled water pressure drop curve (LE)

90 100

14

Flow rate (m3/h)

11

12

Flow rate (m3/h)

80

90 100

70

13
21

23

200

22

24

13

200

32

31

41

21

23

300

14

42

31

400

22

24

300

51

500

32 41

400

600

42

500

53
52

700

53
52
51

700

800

800 900 1000

600

ENVIRONMENTALLY FRIENDLY TECHNOLOGY
SUPER ABSORPTION

87

Pressure drop (kPa)

SUPER ABSORPTION

200

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

41

42

53
52
51

Installation and application data

32

Location and space requirements

40
12
11

20

Flow rate (m3/h)

30

13
03

and noise transmission, vibration absorbers should be provided. Shutoff
valves should be provided to allow unit isolation during maintenance.
Chilled water flow switch is provided on the unit and is preset to open at
approximately 50% of specified flow rate.

Field piping instruction

50

22

60

70

Water piping should be arranged so that the circulating pumps discharge
directly into the vessels. The water piping should be insulated to reduce
heat gain and to prevent condensation. Air vents should be located at all
high points in the water piping system, and drains should be located at all
low points to facilitate complete system drainage. To reduce vibration

21
14

Hot water pressure drop curve (LE)

provided on either end to facilitate tube cleaning, or removal and clearance on all other sides of the unit for general unit maintenance. See the
dimensional data tables for clearance requirements.

Water piping

80

23

90 100

24

31

The unit is designed for indoor application and must be located in a space
where the surrounding temperature of equipment is between 5°C and
45°C, and at no more than 90% relative humidity. Clearance must be

1. In order to prevent freeze-up of chilled water during unit shutdown,
the chilled water pump(s) and air handler must be run for 15 minutes
after the burner is shut off. This will allow time for the automatic dilution cycle to be completed.
2. The standard unit must not be subjected to water pressures in excess
of 981 kPa (10 kg/cm2G).
3. An expansion tank should be provided in the chilled/hot water line.
4. Thermometers and pressure gauges should be field-installed at the
inlet and outlet of the chilled/hot water line, and the cooling water
line.

5. During heating operation, the cooling water circuit should not be in
operation and should be blown down.
6. All external piping connections are provided with JIS 10K flanges unless noted.
7. A drain line must be installed from the smoke chamber drain to a floor
drain.
8. See Figure 32 (DE), Figure 48 (NE), Figure 61 (LE) for typical system piping arrangement.

Leveling requirements
Strict leveling tolerances must be adhered to for trouble-free operation.
SANYO units are furnished with four leveling reference points, one on
each corner of the lower shell or tube sheet. Each reference point is
designated by three punch marks. A convenient method to check leveling tolerances is to fill a clear vinyl hose with water and measure the

difference in the water level at the two points. The tolerance that must be
maintained from end-to-end and side-to side is 1mm (1/25'') of difference
for each 1m length between points. It is not necessary to check levels
diagonally. When the unit does not meet this requirement, the unit must
be shimmed in order to meet leveling tolerances.

8

01

9

10

02

Figure 62. Leveling the chiller

6

7

B

4

5

D

Evaporator side

Graph 17.

A
C

10

20

30

40

50

60

70

80

90

100

3

Absorber side

Pressure drop (kPa)

88

89

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Insulation (DE)

Insulation (NE)

Figure 63. Insulation of DE

Figure 64. Insulation of NE

Don't insulate sight glass.

Don't insulate the motor,
refrigerant pump and sight glass.

*2 Chamber cover

50mm thick insulation
for hot surface
*2 Chamber cover

Don't insulate the motor,
refrigerant pump and sight glass.

Evaporator cover and chamber cover are
removable in construction

50mm thick insulation for hot surface

Evaporator cover and chamber cover are
removable in construction

100mm thick insulation for hot surface

30mm thick insulation for cold surface

75mm thick insulation for hot surface

75mm thick insulation for hot surface

30mm thick insulation for cold surface

50mm thick insulation for hot surface

30mm thick insulation for cold surface
30mm thick insulation for cold surface

Table 17. Insulation data

Table 16. Insulation data

Model
DE-11
DE-12
DE-13
DE-14
DE-21
DE-22
DE-23
DE-24
DE-31
DE-32
DE-41
DE-42
DE-51
DE-52
DE-53
DE-61
DE-62
DE-63
DE-71
DE-72
DE-73
DE-81
DE-82

Hot surface
insulation(m2)
100mm
75mm
30mm
5.8
2.2
2.9
6.2
2.2
3.0
7.8
3.2
4.2
8.0
3.2
4.3
10.1
3.8
4.9
10.4
3.8
5.0
11.8
4.8
5.5
12.5
4.8
5.6
14.5
5.5
6.2
15.2
5.5
6.4
17.5
5.7
6.8
18.1
5.7
7.0
19.6
5.4
7.6
20.7
5.9
7.9
21.7
6.2
8.2
25.4
7.2
9.7
27.2
7.7
10.1
28.9
8.2
10.5
35.4
10.4
12.1
37.4
10.7
12.4
39.4
11.0
12.7
42.5
11.0
13.0
44.0
11.3
13.5

Cold surface
insulation(m2)
50mm
30mm
4.0
0.4
4.0
0.4
5.5
0.4
5.5
0.4
6.1
0.5
6.1
0.5
7.6
0.5
7.6
0.5
8.5
0.7
8.5
0.7
9.9
0.7
9.9
0.7
13.8
1.1
15.0
1.1
16.1
1.1
17.5
1.2
18.7
1.2
20.0
1.2
10.9
1.4
11.4
1.4
11.8
1.4
13.1
1.5
13.6
1.5

Notice :
1) Material : Glass wool or rock wool (non-combustible type)
2) The total area includes the area of pipes in the chiller/heaters.
3) The machine is coated with rust preventive paint before shipment,
but is not provided with finish paint.

90

Evaporator cover

Model
NE-11
NE-12
NE-13
NE-14
NE-21
NE-22
NE-23
NE-24
NE-31
NE-32
NE-41
NE-42
NE-51
NE-52
NE-53
NE-61
NE-62
NE-63
NE-71
NE-72
NE-73
NE-81
NE-82

Hot surface
insulation(m2)
75mm
30mm
5.2
3.5
5.2
3.6
7.3
4.8
7.3
4.9
8.3
5.7
8.3
5.8
10.5
6.3
10.5
6.4
11.6
7.1
11.6
7.3
13.0
7.7
13.0
7.9
13.8
8.9
15.4
9.2
17.0
9.5
18.4
11.0
20.2
11.4
22.0
11.8
20.9
13.7
22.6
14.0
24.6
14.3
24.4
14.6
26.4
15.1

Cold surface
insulation(m2)
50mm
30mm
4.0
0.4
4.0
0.4
5.5
0.4
5.5
0.4
6.1
0.5
6.1
0.5
7.6
0.5
7.6
0.5
8.5
0.7
8.5
0.7
9.9
0.7
9.9
0.7
13.8
1.1
15.0
1.1
16.1
1.1
17.5
1.2
18.7
1.2
20.0
1.2
10.9
1.4
11.4
1.4
11.8
1.4
13.1
1.5
13.6
1.5

Notice :
1) Material : Glass wool or rock wool (non-combustible type)
2) The total area includes the area of pipes in the chiller.
3) The machine is coated with rust preventive paint before shipment,
but is not provided with finish paint.

91

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Insulation (LE)

Rupture disk mounting

Figure 65. Insulation of LE

In some instances local codes may dictate the use of a rupture disk to
prevent damage to the chiller in the event of overpressurization of the
high and low temperature generators. SANYO units are provided with a
flange for mounting a rupture disk.
At this flange connection, a rupture disk may be installed and connected
to a field-provided overflow tank per Figure 66.
It is the responsibility of the installing contractor to install the rupture disk
on the units and overflow tank (if required) prior to initial chiller startup.

Generator cover

Generator cover

Figure 66. Piping of rupture disk

Rupture disk mounting instructions are as follows:
1. Prior to installing or replacing the rupture disk, insure that a slight
positive pressure is maintained in the chiller with nitrogen gas.
2. Apply Teflon paste to both sides of gasket.
3. Align gasket as shown in Figure 68.
4. Assemble flanges and torque per specifications shown in the manual
of rupture disk.
5. Conduct leak test using nitrogen gas at 49 kPa (0.5 kg/cm2G) after
installation of rupture disk.
6. Periodic maintenance should include tightening the rupture disk with
a torque wrench.

Discharge piping

Rupture disk

Support

Evaporator cover

Evaporator cover
Don't insulate the motor,
refrigerant pump and sight glass.

Vent piping

Evaporator cover and chamber cover are
removable in construction

30mm thick insulation for cold surface

75mm thick insulation for hot surface

30mm thick insulation for cold surface

50mm thick insulation for hot surface
Tank

Above 35 QFT

Table 18. Insulation data

Model
LE-01
LE-02
LE-03
LE-11
LE-12
LE-13
LE-14
LE-21
LE-22
LE-23
LE-24
LE-31
LE-32
LE-41
LE-42
LE-51
LE-52
LE-53

Hot surface
insulation(m2)
75mm
30mm
2.3
1.4
2.3
1.4
2.7
1.6
2.8
1.6
2.8
1.8
3.8
1.9
3.8
2.2
4.0
2.5
4.0
2.5
5.2
3.1
5.2
3.3
6.0
3.5
6.0
3.6
6.6
3.7
6.6
3.9
7.6
4.8
8.4
5.1
9.2
5.3

Cold surface
insulation(m2)
50mm
30mm
3.3
0.2
3.3
0.2
3.9
0.3
4.0
0.3
4.0
0.3
5.5
0.3
5.5
0.3
6.1
0.4
6.1
0.4
7.6
0.5
7.6
0.5
8.5
0.5
8.5
0.5
9.9
0.5
9.9
0.5
13.8
0.7
15.0
0.7
16.1
0.7

: Scope of supply by SANYO

Drain

Figure 67. Fixing methed of rupture disk
To tank
Pipe

Cap screw

High tension bolt

Safety head

Flange
High tension nut

Rupture disk

Teflon paste
Flange

Safety head
Gasket

Pipe

Teflon paste

From chiller

Notice :
1) Material : Glass wool or rock wool (non-combustible type)
2) The total area includes the area of pipes in the chiller.
3) The machine is coated with rust preventive paint before shipment,
but is not provided with finish paint.

Figure 68. Gasket

A

4 inch

6 inch

disk

disk

A
(mm)

174.8

222.3

B
(mm)

149.4

209.6

C
(mm)

127.6

182.6

• Material : T/#9090-OR
4.5

C

92

B

3.2

93

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Table 19. Water quality standard values for cooling water and chilled water

Management of cooling water quality

Cooling water system
Recirculating type
Recirculating

Make-up water

6.5 to 8.2

6.0 to 8.0

6.8 to 8.0

6.8 to 8.0

6.8 to 8.0

(ms / m)

80 or less

30 or less

40 or less

40 or less

30 or less

Chloride ion

(mgCI- / I)

200 or less

50 or less

50 or less

50 or less

50 or less

Sulfate ion

(mgSO42- / I)

200 or less

50 or less

50 or less

50 or less

50 or less

(mgCaCO3 / I)

100 or less

50 or less

50 or less

50 or less

50 or less

Total hardness

(mgCaCO3 / I)

200 or less

70 or less

70 or less

70 or less

70 or less

Calcium hardness

(mgCaCO3 / I)

150 or less

50 or less

50 or less

50 or less

50 or less

Ionic silica

(mgSiO2 / I)

50 or less

30 or less

30 or less

30 or less

30 or less

Iron

(mgFe / I)

1.0 or less

0.3 or less

1.0 or less

1.0 or less

0.3 or less

Copper

(mgCu / I)
(mgS2- / I)

0.3 or less

0.1 or less

1.0 or less

1.0 or less

0.1 or less

Sulfide ion

No detected

No detected

No detected

No detected

No detected

Ammonium ion

(mgNH4+ / I)

1.0 or less

0.1 or less

1.0 or less

1.0 or less

0.1 or less

Residual chlorine

(mgCI / I)

0.3 or less

0.3 or less

0.3 or less

0.3 or less

0.3 or less

(mgCO2 / )

4.0 or less

4.0 or less

4.0 or less

4.0 or less

4.0 or less

60 to 7.0

***

***

***

***

pH(25°C)

Quality control of cooling water

Electrical

gradually be degraded. As the water and air always come in contact with
each other in the cooling tower, sulfurous acid gas, dust, sand and etc. in
the atmosphere will mix into the water, further degrading the water quality. In the cooling water system, problems with water are caused by these
factors. Typical problems are corrosion, scales and slimes.

ment specialists can also help determine the necessary time intervals for
tube inspections and/or tube brushing/cleaning.
Added attention must be given on retrofit jobs when the existing piping is
reused. Air infiltration into the piping will cause a rapid build-up of rust
and corrosion inside the piping. Scale and debris may break loose from
the inside walls of the piping during retrofit operations. The use of water
strainers and water treatment will be necessary to remove the larger particles from the system and keep the smaller particles in suspension.

Reference items

Water treatment
As with any system utilizing an open or closed loop water circuit, the use
of water treatment is a necessity to insure long life and efficient operation
of the entire system.
Impurities in the water such as scale, dirt, bacteria, etc. will adhere to
heat transfer surfaces causing a loss of efficiency, higher operating costs,
and a potential for mechanical damage.
Proper and continued water treatment by a reputable water treatment
company should be continued for the life of the equipment. Water treat-

below 20°C

Make-up water

Tendency
Corrosive

Scale forming

conductivity 25°C

Standard items

The cooling water of an open-type recycling cooling tower lowers temperature of the cooling water using vaporized latent-heat, and is reused.
At this time, the water is evaporated and dissolved salts. Hardness materials sulfate ion, etc. in the water will increase. Namely, condensation
phenomena of such materials occurs in the water, and water quality will

Chilled water system
Recirculating

Once through
(One way) type

Acid consumption
pH 4.8

Free carbon
dioxide
Ryzner stability

(RSI)

index

Table 20. Water quality standard values for mid-range temperature water

Figure 69. Temperature control of cooling water

Mid-range temperature (20-90°C) water system
Lower level (20 to 60°C)
Recirculating

Make-up water

Recirculating

Make-up water

7.0 to 8.0

7.0 to 8.0

7.0 to 8.0

7.0 to 8.0

(ms / m)

30 or less

30 or less

30 or less

30 or less

(mgCI- / I)
(mgSO 2- / I)

50 or less

50 or less

30 or less

30 or less

50 or less

50 or less

30 or less

30 or less

(mgCaCO3 / I)

50 or less

50 or less

50 or less

50 or less

Total hardness

(mgCaCO3 / I)

70 or less

70 or less

70 or less

70 or less

Calcium hardness

(mgCaCO3 / I)

50 or less

50 or less

50 or less

50 or less

Ionic silica

(mgSiO2 / I)

30 or less

30 or less

30 or less

30 or less

Iron

(mgFe / I)

1.0 or less

1.0 or less

1.0 or less

0.3 or less

Copper

(mgCu / I)
(mgS2- / I)

1.0 or less

1.0 or less

1.0 or less

0.1 or less

Sulfide ion

No detected

No detected

No detected

No detected

Ammonium ion

(mgNH4+ / I)

0.3 or less

0.1 or less

0.1 or less

0.1 or less

Residual chlorine

(mgCI / I)

0.25 or less

0.3 or less

0.1 or less

0.3 or less

(mgCO2 / )

4.0 or less

4.0 or less

4.0 or less

4.0 or less

***

***

***

***

pH(25°C)
Electrical

Constant flow
blow valve

Standard items

conductivity 25°C

Automatic three way control valve

Cooling tower

From chiller

Blow

Water supply

Chemicals adding pump

Reference items

MV

Tendency

Higher level (60 to 90°C)

Chloride ion
Sulfate ion
Acid consumption
pH 4.8

Free carbon
dioxide
Ryzner stability

4

(RSI)

Corrosive

Scale forming

index

Cooling
Water pump
To chiller

Chemicals tank
Cooling water thermostat
for cooling tower fan
Cooling water thermostat
for three-way control valve

94

Notes :
1) The nomenclature of items, definition of terms and units shall comply with the JIS K 0101.
2) The mark K indicates factors affecting the corrosive or scale-forming tendencies.
3) When temperature is high (above 40°C), corrosiveness generally increases.
Especially, when the iron/steel surface has no protective film and directly contacts water,
it is desirable to adequately take countermeasures against corrosion, such as the addition of a
corrosion inhibitor and deaeration treatment.
4) As for the cooling water system using a closed type cooling tower, the water quality standard for
the mid-range temperature water system shall be applied to the closed circuit recirculating/sprinkling
water and its make-up water, while the water quality standard for the recirculating cooling water
system shall be applied to the sprinkling water and its make-up water, respectively.
5) City water, industrial water and ground water shall be used as source water, and demineralized water
reclaimed water, softened water, etc. shall be excluded.
6) The 15 items listed above show typical factors of corrosion and scale problems.

95

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Examples of Installation

Cooling water blow system
A part of circulating water should be blown to prevent degrading of cooling water quality.
Since concentration ratio is considered about 3 to 4 blowing, water quantity is calculated as follows.
N
M

: Concentration ratio generally N=3
: Make-up water volume

E

: Evaporation loss

3,024✕1.85 (exhaust factor)

E=

575 (Latent heat of evaporation at 40°C)
W
B

: Splashing loss
: Blow volume

generally W=0.2% of circulating water volume

M

: E+W+B

N=

E+W+B
W+B

by the above,
B=

1

• (E+W-NW)

N-1

M=

N

TOKYO INTERNATIONAL FORUM User : Tokyo Heat Supply Co.,ltd

•E

N-1

Figure 70.
Manual valve

Osaka Dome City User : OSAKA GAS Co.,Ltd. Iwasaki Energy Center

Over Flow

1

Make-up
water

Absorption
chiller

Make-up water is over supplied
by manual valve for over-flow
in cooling tower.

P
Over flow

Figure 71.
Blow regulation valve

Continuous Flow

2

Make-up
water

Certain amount of circulating
water is blown by blow
regulation valve.

Absorption
chiller

P

Higher than
cooling water level

Figure 72.
Solenoid valve

Pressure Switch+Solenoid Valve

Make-up
water

3
Circulation pump is controlled
by pressure switch.

Absorption
chiller

Pressure switch
P

Figure 73.

Water treatment control panel
Solenoid valve

4

Conductivity Meter+Solenoid Valve
PH Meter+Solenoid Valve
Blow is controlled.

Make-up
water
Absorption
chiller

Kitakyusyu Media Dome

Sensor
P

Over flow

Kyoto Station Building

96

97



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