Sanyo DE operation manual Stop signal Chiller stop, 36 sec, Ignition gas, Main gas, Pump

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ENVIRONMENTALLY FRIENDLY TECHNOLOGY

SUPER ABSORPTION

Sequence of cooling operation (DE)

Sequence of heating operation (DE)

Figure 27 illustrates the typical operating sequence of a SANYO DE di- rect-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 en- abled, the start signal will be energized as the leaving chilled water tem- perature rises to 7.7° C, 1.0° C above setpoint.

The burner initially completes a 36-seconds pre-purge operation that in- cludes 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 op- eration to insure quicker start-up and optimum performance at part load.

Figure 27. Typical combustion time chart (cooling operation)

Start signal

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 re- starting during the dilution cycle.

Stop signal

Figure 28 illustrates the typical operating sequence of a SANYO DE di- rect-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 in- cludes 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 ab- sorbent pumps, the No. 2 pump remains off at all times during the heat- ing mode.

Figure 28. Typical combustion time chart (heating operation)

Start signal

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.

Stop signal

Chiller stop

 

Pre-purge

4

2

8

2

Control

Post-purge

 

36 sec.

sec.

sec.

sec.

sec.

area

12 sec.

Burner

ON

 

 

 

 

 

 

Blower

OFF

 

 

 

 

 

 

Gas control

Open

 

 

 

 

 

 

valve

Close

 

 

 

 

 

 

Ignition

ON

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

Sol. valve

ON

 

 

 

 

 

 

Ignition gas

OFF

 

 

 

 

 

 

Sol. valve

ON

 

 

 

 

 

 

Main gas

OFF

 

 

 

 

 

 

No. 1 ABSO

ON

 

 

 

 

 

 

pump

OFF

 

 

 

 

 

 

No. 2 ABSO

ON

 

 

 

 

 

 

pump

OFF

 

 

 

 

 

 

Refrigerant

ON

 

 

 

 

 

 

pump

OFF

 

 

 

 

 

 

Approx. 5 min.

Dilution cycle

Approx. 6 -- 15 min.

Chiller stop

 

Pre-purge

4

2

8

2

Control

Post-purge

 

36 sec.

sec.

sec.

sec.

sec.

area

12 sec.

Burner

ON

 

 

 

 

 

 

Blower

OFF

 

 

 

 

 

 

Gas control

Open

 

 

 

 

 

 

valve

Close

 

 

 

 

 

 

Ignition

ON

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

Sol. valve

ON

 

 

 

 

 

 

Ignition gas

OFF

 

 

 

 

 

 

Sol. valve

ON

 

 

 

 

 

 

Main gas

OFF

 

 

 

 

 

 

No. 1 ABSO

ON

 

 

 

 

 

 

pump

OFF

 

 

 

 

 

 

 

Approx. 5 min.

 

Dilution cycle

 

 

 

Approx. 5 min.

36

37

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Contents Making the World a More Comfortable Place Contents Electrical peak power shaving Heating and cooling operationDouble effect absorption cycle Many applicationsExpert function by self-diagnosis Graph 2. Tendency of absorbent concentrationSanyo control system Display and control boardGenerator temp 149 C Exhaust gas temp 236 C CH W temp 12.3 7.1 CSpeedy digital PID control Saving energy with the inverterPurge system Steam valve opening controlHigh temperature generator safety control Expansion of safety operating zoneDouble effect type Crystallization protectionAbsorption cooling cycle Lower shellSchematic cooling cycle Upper shellLow Temperature Generator Cooling cycleHeating cycle Cooling Water outletDouble effect direct-fired absorption chiller / heaters Scope of supply DE Scope of order DECOW Hole33ø DE-31ThruDE-32 ABC DEF Foundation dimensional data DE Control panel DETo mount the chiller Detail of weld . Washers are supplied with the chillerStop Field wiring DEStart Stop signal Chiller stop 36 secIgnition Ignition gasFlue flange dimensional data Field supply Steel material Dimensional dataFlue & stack connection Typical steel stackBurner description Gas trainGeneral remarks on piping work Typical piping diagram DECooling cycle schematic Double effect steam-fired absorption chillers Scope of supply NE Scope of order NE877 341 329 2311 1896 1003 364 2089 Eitherside CHWin 3289 3104 3400 1078 396 Out 1515 410 684 COWin R700 2930 1971 33hole Wireconnectionø Out Connectionø41 Wire Out 140 Foundation dimensional data NE Control panel NEField wiring NE Typical electrical field connection diagram Steam-fired NETypical piping diagram-laying NE General remarks on piping-laying workHot water-fired absorption chillers Main unit Rust preventive paint Control panel Finish paint Scope of supply LEScope of order LE BCD 2255 835 926 Side Spaceeither COWinlet Tuberemoval COWoutlet 976 Side 3886 4500 Removalspaceeither Tube Customer.the LEThru52-LE 57.FigureGenerator temp 69 C Foundation dimensional data LEControl panel LE Field wiring LE For emergency stop signalTypical piping diagram-laying LE Work outside the area surrounded by this lineCapacity ratings DE and NE Capacity ratings LEFlowrate Dropcurve Pressure WaterCooling pressure drop LEcurve Location and space requirements Water pipingField piping instruction Leveling requirementsInsulation DE Insulation NE Insulation dataInsulation LE Rupture disk mountingQuality control of cooling water Water treatmentCooling water blow system

DE specifications

Sanyo DE is an innovative line of home appliances and electronics that showcases Sanyo's commitment to quality, efficiency, and user-centered design. This series includes various products, such as air conditioners, refrigerators, and microwaves, all engineered to enhance the everyday living experience.

One of the standout features of Sanyo DE appliances is their energy efficiency. Many models are equipped with advanced technologies that adhere to stringent energy-saving standards, helping consumers reduce their electricity bills while minimizing their environmental footprint. The use of inverter technology in air conditioners, for instance, allows for precise temperature control and significant reductions in energy consumption.

Sanyo DE also emphasizes smart technology integration. Many products come with Wi-Fi capabilities, enabling users to control their appliances remotely via mobile apps. This connectivity makes it easier to monitor energy usage, adjust settings, and receive alerts about maintenance needs. Users can enjoy added convenience as they can pre-heat their ovens or set their air conditioners to the desired temperature before arriving home.

Another key characteristic of Sanyo DE is its focus on durability and reliability. Each product is built with high-quality materials and undergoes rigorous testing to ensure long-lasting performance. The robust construction not only enhances the lifespan of the appliances but also provides peace of mind to users concerning their safety and functionality.

In terms of design, Sanyo DE products are crafted to blend seamlessly into modern homes with sleek and contemporary aesthetics. The intuitive user interfaces are designed for ease of use, featuring clear displays and simple controls, allowing users of all ages to operate the appliances without any hassle.

Furthermore, Sanyo DE pays attention to noise reduction. Many appliances incorporate sound dampening technologies, making them ideal for use in residential settings, where quiet operation is critical. Whether it’s a refrigerator running seamlessly in the background or an air conditioner cooling the room without disruption, Sanyo DE ensures a pleasant home atmosphere.

Overall, Sanyo DE exemplifies a fusion of advanced technology, energy efficiency, and user-friendly design. With a diverse range of appliances, Sanyo DE is committed to enhancing the lives of its users through thoughtful innovation and reliable performance.
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