E-boil Lazer Boiling Water Units

E-boil Lazer Boiling Water Units

The E-boil Lazer provides boiling water for tea, coffee, soup, noodles and cooking throughout the day and night efficiently, economically and constantly. Employing modern electronic technology, the fully automatic E-boil Lazer saves time and money.

The E-boil Lazer is designed for use in clubs, commercial and domestic kitchens, factories, hospitals, hotels, motels, medical and dental surgeries, offices, restaurants, shops and any where else boiling water is required for beverage making. Any place of employment or service is a potential market for a E-boil Lazer boiling water unit.

E-boil has drawn upon their years of experience in developing, designing, manufacturing and installing water heaters to enhance the quality and high standard of the E-boil Lazer boiling water unit. The E-boil sales, service and manufacturing facilities have been awarded the prestigious ISO 9001 Quality Certification. This provides the consumer with confidence that their E-boil Lazer is manufactured by a Quality Certified Company who operate with an internationally recognised quality system and procedures program.

The E-boil Lazer meets the Australian Standard for Electrical Safety, “AS 3350 Approval and Test Specification - Electric Water Heaters”. The E-boil Lazer has also been approved to the European Standards, being granted CE approval. This provides the customer with the confidence their E-boil Lazer boiling water unit has been designed and manufactured to recognised International Standards.

Versatile Range of Product

The E-boil Lazer boiling water unit is available in two product ranges, with three jacket finishes and in thirteen models ensuring a model is available to fill all of your customers needs. There is an appearance designed to fit in with any decor and environment. The two ranges and the jackets available are:

Designer Series	:	Sculptured ABS jacket
Classic Series	:	White enamelled steel jacket
		Stainless steel jacket

There are six capacities available ensuring a model is available to meet even the largest boiling water requirements. The capacities available are:

2.5 litres, 5.0 litres, 7.5 litres, 15 litres, 25 litres, 40 litres.

Whether it is a modern stylish office, a more classic decor or a commercial kitchen, there is a E-boil Lazer to suit.

BOILING WATER

Designer Series

The Designer series is available in three capacities; 2.5 litre, 5.0 litres and 7.5 litres.

Stylish And Aesthetically Advanced; The Designer series offers stylish and aesthetically pleasing models, each with an architecturally streamlined jacket, which fits in with any modern decor. Perfect for the stylish and up market office environment or modern home, the Designer series offers charm, character and an attractive appearance where style is just as important as function.

Elegant Push Button Tap; This easy to use elegant tap, which compliments the good looks of the stylish Designer series, ensures making a cup of coffee is as simple as pushing a button. The spring loaded tap conveniently reverts to the off position so no water or energy is wasted.

Power and Ready indicator lights; These bright and easy to see lights advise the current status of the E-boil Lazer. The red power light indicates when power is on to the E-boil Lazer, whilst the green ready light signals boiling water is available for immediate use.

Classic Series

The Classic Series is available in a white baked enamel all steel jacket which blends in with any décor, or an all stainless steel jacket befitting the commercial kitchen or hospital environment. Both jackets are easy to clean and maintain, presenting an attractive shiny appearance. Their design allows them to fit unobtrusively into their environment without breaking the lines of the surrounding décor, bringing a Classic look to the installation.

White Enamel Jacket; Available in 2.5 litre, 5.0 litre, 7.5 litre, 15 litre, 25 litre and 40 litre capacities.

Stainless Steel Jacket; Available in 7.5 litre, 15 litre, 25 litre and 40 litre capacities.

Spring Loaded Tap; An easy to operate spring loaded tap is located at the front of the Classic Lazer. The tap can be either held down to control the flow of boiling water or pushed up to provide a constant flow of boiling water for filling a jug or pot, without having to continuously hold the tap.

FEATURES

Electronic Control and Constant Monitoring; The E-boil Lazer employs modern electronic technology ensuring superior performance and trouble free operation. This electronic control system governs the operation of the E-boil Lazer by constantly monitoring and coordinating the functions of the boiling water unit from it’s staged filling process to heating whilst maintaining fine temperature control of the boiling water. The electronic operation of the E-boil Lazer means it has less components. This makes for a simple operation and easier servicing.

Fully Automatic Staged Filling Process; The filling and heating process is governed by the electronic control box. The E-boil Lazer automatically refills and reheats in cycles so boiling water is available straight away. There is no waiting for a unit to fill completely before boiling water is obtained. The stainless steel water level probe senses the water level and works in conjunction with the solenoid valve, which controls and maintains the correct flow of water into the tank. Concurrently the heating element, working in conjunction with the thermistor which senses and provides the fine temperature control, provides rapid heating. Cups of boiling water can be drawn off continuously. Being a fully automatic unit there is no messy manual refilling required, leaving the tea room or kitchen clean and tidy.

Delivers More Instant Boiling Water; The E-boil Lazer delivers more boiling water when it is needed, straight away. The powerful heating element ensures rapid recovery so boiling water is always available. The 2.5 litre to 15 litre models have a 2.4 kW heating element. The 25 litre and 40 litre capacities have a 3.6kW and 4.6kW heating element respectively. This provides an hourly recovery of between 120 cups for the 2.5 litre to 15 litre models, 182 cups for the 25 litre and 232 cups for the 40 litre models. Lazer cups are of 200 ml capacity.

Convenient and Productive, Saving Time and Money; The E-boil Lazer is so convenient for people to use. At the simple push of a button or pull of a tap, boiling water is dispensed. Staff are not inconvenienced by having to fill a jug or kettle and having to wait for it to boil. This increases productivity as they are not kept away from their desk, work station or counter. This saving of time and increases in productivity saves a company money, which is a great benefit to any business.

Energy Efficient; The E-boil Lazer is not only a powerful unit but also compact and energy efficient. The water is heated and stored in one tank. There are no cold water tanks nor make up or heating chambers. The E-boil Lazer’s compact internal tank is fully insulated with CFC-Free polystyrene foam keeping the heat inside the tank. This reduces standing heat losses, saving energy, keeping running costs down and making the E-boil Lazer even more economical to operate. There is no more boiling water going cold inside a jug or kettle, nor wasting energy before it is next boiled.

Hygienic and Safe; The E-boil Lazer has a fully enclosed and sealed copper internal tank, with venting through an overflow pipe, which connects to a vent drain line, located under the jacket skirt. This makes the E-boil Lazer hygienic, preventing contaminants from entering the water, and safe, eliminating the incidence of scalding due to spilled boiled water.

Concealed Plumbing; The 2.5 litre, 5 litre and 7.5 litre models of the E-boil Lazer are designed so both the cold water connection and vent connection can be completely concealed. There are no unsightly unions or joins to detract from the unit or the surrounding décor.

BOILING WATER

Fig. 12.1 The E-boil Lazer Designer Series boiling water unit

COMPONENTS

Electronic Control Box (ECB); The ECB provides the logic to monitor and coordinates the functions of the boiling water unit from it’s staged filling process to heating whilst maintaining fine temperature control of the water.

Water Level Probe; The stainless steel water level probe senses the water level and works in conjunction with the solenoid valve. A drop in the water level will cause the solenoid valve to open. The low level sensor monitors the low water level to ensure the heating unit cannot operate unless it is covered by water. The high level sensor monitors the high water level to ensure the maximum water level is not exceeded.

Solenoid Valve; The solenoid valve controls and maintains the correct flow of water into the tank. The drawing of boiling water will cause the solenoid valve to open. Filling will continue until the water temperature falls to 96°C at which point the solenoid valve will close. Delivering cold water through the solenoid valve onto the thermistor, which senses the water temperature, causes heating to commence.

Thermistor and Heating Element; The thermistor senses fine changes in temperature and monitors the water temperature to maintain water at near boiling. When the thermistor senses a temperature drop below 96°C or when cold water enters the tank, the heating element begins to heat automatically and rapidly, raising the water temperature to 98°C. This fine temperature control ensures the E-boil Lazer maintains it’s temperature and delivers more boiling water when it is needed most.

SUMMARY OF OPERATION

Upon installation of the E-boil Lazer Boiling Water Unit, the cold water supply is turned on, followed by the electrical supply. The introduction of power will cause the solenoid to open and filling will commence.

Filling will continue until the water reaches the low level sensor on the water level probe. Filling will stop and heating will commence. When the water temperature reaches 98°C, the solenoid valve opens and filling will recommence. The solenoid valve will close again when the water temperature is sensed at 96°C, and open again when the temperature is heated to 98°C. This filling cycle continues until the unit is full. Each time the solenoid valve closes, the water level probe is checked. Heating continues until the unit is full. The heating unit will cycle to maintain the water at between 96°C and 98°C.

The drawing of boiling water will cause the solenoid valve to open and recommence filling, delivering cold water on to the thermistor which, in turn, causes heating to commence. The continuous drawing of water for more than 30 seconds will cause the solenoid valve to close to ensure the water temperature is not reduced.

BOILING WATER

Fig. 12.2 Cutaway view of a Designer series E-boil Lazer boiling water unit

INSTALLATION

The E-boil Lazer is so simple to install. Each model has an integral mounting bracket allowing the E-boil Lazer to be easily mounted on the wall. The E-boil Lazer Boiling Water Unit is not weatherproof and external installations must be protected from the weather. The unit must also be installed with sufficient clearance for service access. A clearance of 150 mm for service access is required both above and to the left or right hand side of the unit depending on the model type.

The E-boil Lazer must be connected to a cold water supply. The cold water connection is located underneath the E-boil Lazer, ensuring the attractive appearance of the installation. The water supply pressure must be between a minimum 50 kPa for the 2.5 litre to 7.5 litre, 75 kPa for the 15 and 25 litre, and 100 kPa for the 40 litre and a maximum 1000 kPa. An isolation valve must be installed on the cold water supply line to the E-boil Lazer Boiling Water Unit. A double non return valve is incorporated at the cold water connection prior to the solenoid valve and internal filler pipe. The E-boil Lazer boiling water unit is not a pressurised unit. The E-boil Lazer must not be connected to a hot water supply.

The E-boil Lazer incorporates an integral overflow pipe in its design. A vent drain line discharging to the atmosphere with a continuous fall is required to be connected to the Lazer. The primary functions of the overflow pipe and vent drain line are to:

Allow air to escape whilst filling,
Prevent the inner tank from collapsing when draining.

This vent drain line, connected to the overflow pipe at the bottom of the E-boil Lazer, should not exceed one metre in length and not have more than three bends in it. The drain line must not be sealed or blocked in any way. The secondary functions of the overflow pipe and vent drain line are to allow any excess water to drain away and to allow any steam to escape while heating. The point of discharge must be where it can be seen but not cause nuisance if water or steam is discharged.

A drain point with a fitted screw plug is incorporated on the underside of the tank. This allows the entire contents to be drained from the tank, if required, making the servicing or removal of the unit simple and convenient.

The boiling temperature of water decreases as altitude increases. To allow for this, a potentiometer is incorporated into the Electronic Control Box. This must be adjusted on E-boil Lazer Boiling Water Units installed at altitudes over 300 metres above sea level. This ensures the unit does not boil continuously as the boiling temperature of water decreases with altitude. The potentiometer has an adjustment range of 92°C to 102°C and its adjustment must be made by a qualified person. The temperature of boiling water at various altitudes is:

300 - 600 metres - 97°C,
600 - 1200 metres - 96°C,
1200 meters and over - 95°C.

The 2.5 litre, 5 litre, 7.5 litre and 15 litre models are supplied with an electrical cord and three pin plug. The electrical connection is as simple as plugging directly into a 10 Amp general power outlet. It couldn’t be easier. The 25 litre and 40 litre models must be hard wired by a qualified electrician. The 25 litre models require a 15 Amp circuit and the 40 litre models require a 20 Amp circuit.

Servicing of the E-boil Lazer is also very simple. The front jacket on the 2.5 litre, 5.0 litre and 7.5 litre models can be easily removed to enable complete and unencumbered access to all components for servicing, should it be required. Access to components on the 15 litre, 25 litre and 40 litre models is via a detachable panel on both the left hand side and the top of the unit. The side panel provides access to the heating element, thermistor, solenoid valve and the electronic control box, whilst the top panel provides access to the water level probe.

HOW THE E-BOIL LAZER WORKS

The E-boil Lazer boiling water unit has four operating modes.

Mode 1. Empty.

When the water level is below the low level sensor on the water level probe and the heating unit is exposed, power to the heating unit is off. The solenoid valve will open to allow water to enter the E-boil Lazer. When the water level reaches the low level sensor, a delay of 2 seconds will elapse before the solenoid closes and heating commences.

Mode 2. Not Full.

Continuing from Mode 1, the heating unit will have power on throughout Mode 2. While it is heating, incremental filling takes place where small quantities of water are admitted through the solenoid valve each time the water temperature is sensed at 98°C. The solenoid valve will close when the water temperature is sensed at 96°C.

The solenoid valve cycle time will depend on the delay between cold water entry and the sensing of the temperature at 98°C. The cycling time is directly related to:

The temperature of inlet water,
The pressure of inlet water,
The capacity of the E-boil Lazer,
The water level in the E-boil Lazer.

Each time the solenoid valve closes, the high level sensor on the water level probe is activated and, if found to be covered with water the E-boil Lazer will change to Mode 3.

Mode 3. Full.

When the water has reached the high level sensor, the solenoid valve will close and heating will continue until the water temperature reaches 98°C.

The solenoid will open momentarily at this time. The solenoid valve will then only open when water is drawn from the Lazer and the water level falls below the high level sensor.

Heating will continue to cycle on, when the water temperature falls to 96°C, and off, when the water temperature reaches 98°C.

The drawing of water from the tap will return the E-boil Lazer to Mode 2.
During continuous drawing of water the solenoid will close after being open for 30 seconds and the E-boil Lazer will enter Mode 4.
Draining of all the water will return the E-boil Lazer to Mode 1.

Mode 4 - Over-temperature cut-out (OTC)

The continuous drawing of water from the E-boil Lazer for more than thirty (30) seconds during Mode 2, will cause the over temperature cut out function (OTC) to operate. The OTC will close the solenoid valve and turn off the heating unit. This is to ensure the water temperature is not reduced below 96°C and allows the E-boil Lazer to stabilise.

Once activated, the OTC will maintain the E-boil Lazer in this state until the water temperature falls to 96°C. At this temperature the E-boil Lazer will switch back to Mode 2. The OTC is not temperature activated and will not prevent continuous boiling of the E-boil Lazer. Continuous boiling of water may occur if the altitude adjustor has not been set correctly.

Fig. 12.3 Dimensions of Designer series E-boil Lazer boiling water units

BOILING WATER

Fig. 12.4 Dimensions of Classic series E-boil Lazer boiling water units

E-BOIL LAZER MODEL NUMBERS

The model numbers for E-boil Lazer boiling water units are designed to convey detailed information about each model

BOILING WATER

E-BOIL LAZER BOILING WATER UNIT PRODUCT SPECIFICATION

The E-boil Lazer boiling water units are designed to be hung on a wall and connected to mains cold water supply. They are not a pressurised unit and operate under gravity. A space of 150 mm is required for service access both above the unit and to the right hand side of the 2.5 litre to 7.5 litre models and to the left hand side of the 15 litre to 40 litre models.

The internal tank is made of copper and is fully sealed. The tank is open vented. The overflow / vent pipe and drain point have their outlets located under the jacket skirt.

The Electronic Control Box contains a transformer, a relay, a PC Board and microchip. Together they provide the logic to monitor and control the water level and temperature. This allows for fully automatic operation.

The heating unit is of a tubular type and has an elliptical flange for bolt on connection. There is one heating element in the E-boil Lazer. A thermistor temperature sensor probe is centrally located adjacent to the element loop and senses water temperature to maintain water near boiling. A silicon rubber gasket seals the heating unit against the tank.

The water level probe sensor is a stainless steel probe monitoring:

low water level to ensure the heating unit cannot operate unless it is covered by water.
high water level to ensure the maximum water level is not exceeded.

The solenoid valve is located at the left hand side of the boiling water unit. This opens and closes to allow or stop water from entering the unit. A double non return valve is incorporated prior to the solenoid valve at the cold water connection.

A separate relay is incorporated into the 25 and 40 litre units to ensure the 15 and 20 amp load is not passed through the 10 amp Electronic Control Box relay.

The outer jacket of the Designer series is of ABS with a sculptured finish. The Classic series has an outer jacket of either a baked white enamelled steel or stainless steel.

Insulation is of rigid moulded polystyrene foam.

Electrical connections are for single phase 220-240 volt AC single phase operation only. The following electrical configurations are available:

i)	2.5 litre to 15 litre:	1 x 2.4 kW element, supplied with power cord to connect to 10 amp power point.
ii)	25 litre:	1 x 3.6 kW element. To be hard wired to a 15 amp circuit by a qualified electrician.
iii)	40 litre:	1 x 4.6 kW element. To be hard wired to a 20 amp circuit by a qualified electrician.

11. Model Number Designation

771		- Classic series with a white enamel jacket.
781		- Classic series with a stainless steel jacket.
791		- Designer series with a sculptured white plastic jacket.

PLUMBING

Cold Water Piping

The E-Boil Lazer boiling water unit can only be connected to a cold water supply. The connection to the E-boil Lazer is R ½/15 (½” BSP male) and the cold water supply pipe should be DN 15 (½” OD).

The cold water supply line should be fitted with a stop cock. A non-return valve is not necessary. Under no circumstances shall a connection be made to a hot water supply.

Vent Pipe Drain

The vent drain pipe should be as short as possible and must discharge to atmosphere. It should not exceed one metre in length, have a continuous fall and not have more than three bends in it. The connection is R ½/15(½” BSP male) and the drain pipe should be DN 15 ( ½” OD).

Drain Point

A 3mm stainless steel plug screw and sealing washer is provided on the underside of the copper tank to allow complete draining of the tank if required.

Hot Water Outlet

This is situated at the front of the unit. The Classic white enamel and stainless steel models incorporate a tap which can be left open for continuous pouring or held open for intermittent use. The Designer series range has a unique push button tap at the front of the unit and the delivery spout is located at the bottom of the unit. The push button tap will only allow water to be drawn from the E-Boil Lazer whilst it is manually depressed.

Concealed Plumbing

The 2.5 litre, 5 litre and 7.5 litre models of both the Designer and Classic series Lazer have a cut out at the rear of the unit to allow the installation of concealed plumbing.

WATER QUALITY

Caution is suggested if the E-boil Lazer boiling water unit is to be connected to a water supply which has a high content of Silica or Calcium. Water supplies of this nature may be detrimental to the water heater operation and may cause the warranty to become void. For further information relating to the guidelines of water quality, contact your local Southcorp Water Heaters Sales Office or Service Department for advice.