Bajaj Majesty Rust Free Installation guide

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Bajaj Majesty
'Rust Free' Instant Water Heater
Dear Customer,
Congratulations! You are now the proud owner of the new Bajaj Majesty Instant Water Heater, the most durable,
dependable and safe product in the market today. And we mean what we say.
Why? Because we at Bajaj understand your concern, your need for reassurance. So we designed our Instant Water
Heaters with one single minded objective -Safety. Total protection for you and your family, for years to come.
This manual will answer all your questions and remove your doubts. We have provided a detailed description of our
Instant Water Heaters and clear instructions for Installation and operation. Read this manual carefully, follow the
instructions and we guarantee you will never have to worry about your Instant Water Heaters again.
KNOW YOUR BAJAJ MAJESTY
Distinctive features and benefits (Refer Fig. 1)
How does it function?
The new Bajaj Majesty Instant Water Heater Unit is made of an outer body, inner tank, heating element and safety
devices like Safety Valve, Thermostat, Thermal cut-out and Fusible Plug.
Water enters into the inner tank through inlet pipe at normal working pressure of about 30 P.S.I.
When the tank is full (this becomes clear when water starts flowing through the outlet) switch ON the power supply.
The heating element heats up the water to a predefined temperature. At this point the Thermostat automatically
switches OFF the power supply to the unit. In case the thermostat fails to operate an additional Thermal cut out is
provided as extra safety to prevent over heating.

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Functioning of the Thermostat and Thermal cut-out is explained separately.
You can now draw the water out through the outlet. Depending on how hot you want the water, you can control the
flow. Greater the rate of flow, lesser the temperature of water drawn and vice-versa. Because of the design of the
heater and displacement principle, fresh cold water keeps entering through the inlet.
As temperature of water inside the tank drops, the Thermostat again switches ON the power supply to the heater.
When this happens, water starts heating up again. This process continues till you switch OFF the main power supply to
the heater after usage.
How it is made?
Outer casing: It is made of superior quality, rust proof ABS plastic which does not break easily. Available in attractive
colours to match your bathroom decor. This outer casing comes in a unique two piece split design which can be
opened for servicing while the unit is mounted on the wall.
Inner tank: This is made in one-piece from superior grade 99.85% pure electrolytic copper. It comes with a 5 year
guarantee. It is suitable for both hard and soft water. It can handle pressure upto 85 P.S.I. (6.00 Kg/cm2-as per BIS
specifications) Normal working pressure does not exceed 30 PSI (2.1 Kg./cm2)
Insulation: Bajaj Majesty 3L instant water heater is provided with Premolded Polyurethene Foam (PUF) Insulation
between the outer body and inner tank for high degree of insulation i.e. to ensure minimum heat loss.
The heating element: Bajaj Majesty Instant water heater is available in two models: one with 3 KW heating element
and other with 4.5 KW heating element. The heating element is highly efficient, mineral filled, direct-immersion type
and housed in a copper tube. What's more, it is also "Bajaj" and 'ISI" marked.
Indicating lamps: These are red and green neon-gas filled lamps which indicate the functioning of Thermostat and
Thermal cut-out. They are mounted on the heater unit itself.
Hardware: For long life and easy servicing all screws, nuts and bolts used in the heater are made of rust proof
stainless steel.
Safety Systems:
The new Bajaj Majesty Instant Water Heater is provided with Pressure and Temperature control devices. These ensure
complete protection and smooth operation.
These safety devices are:
Safety Valve: This device is fitted on the inlet. It opens and starts dripping when the pressure inside the tank or at
the inlet exceeds 50 P.S.I. (3.5 kg/m2)
Thermostat: A 178 mm (7"), stem type, snap action automatic temperature control device set at 60 degrees celsius
is used. It is also "Bajaj' and "ISI" marked.
Thermal cut-out: A 'Bajaj' marked snap action, bimetallic temperature control device set at 90 degree celsius is
provided as an additional temperature controlling device to prevent over heating. This comes with a push button
outside the unit, which can be reset by hand. This device helps in preventing dry heating of the element in case the
unit is operated without water.
Fusible Plug. In the rare case that the Thermostat and Thermal cut-out fail this plug melts and releases hot water
and steam through the drain pipe. Thus, it prevents any pressure built up. This device can also be used to drain out
the water when the unit is not in use for a long time or servicing has to be done. However, it should be done through a
qualified technician only.
Non return device: There is a siphon hole on the inlet pipe inside the tank of Bajaj Majesty Instant Water Heater.
When pressure inside the tank becomes low, this siphon hole prevents back flow of water. It acts as a non-return
device upto a certain level of low pressure. Thus it prevents collapse of the tank due to vacuum formation.
What are the benefits?
1. A two-year guarantee.
2. Rust proof ABS External body.
3. 5 year guarantee on copper tank.
4. Unique two piece split design, stainless steel screws & nuts and Aluminium flange facilitate easy servicing.
5. Triple safety system with Automatic temperature regulation.
6. Models available in 3 KW and 4.5 KW rating heating elements.
7. Suitable for single point (non-pressure type) and multipoint (pressure type) installation. However, instant
water heaters due to their design and operation are recommended for single point usage only.
8. Manufactured at India's first ISO-9002 certified units.
9. The largest dealer and after sales service network available in the country.

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Technical Specification table
Dimensions (in mm) (Ref.
fig.2)
Model Capacity
(in Litres)
Element
Rating
(in Kw)
Features
ABC
DEF
Colours
Bajaj Majesty 1.0 3.0 Safety
Valve,
Thermostat
Thermal
cut-out
Fusible
plug, Neon
Lamps.
162
336
65
144
80
224 Ivory
and
Grey
Bajaj Majesty 1.0 4.5 Safety
Valve,
Thermostat
Thermal
cut-out
Fusible
Plug, Neon
Lamps.
162
336
65
144
80
224 Ivory
and
Grey
Bajaj Majesty 3.0 3.0 Safety
Valve,
Thermostat
Thermal
cut-out
Fusible
plug, Neon
Lamps.
202
370
54
192
100
180 Ivory
and
Grey
Bajaj Majesty 3.0 4.5 Safety
Valve,
Thermostat
Thermal
cut-out
Fusible
plug, Neon
Lamps
202
370
54
192
100
180 Ivory
and
Grey
Due to continuous efforts for improvement, specifications are subject to changes.
Mounting And Installation of Bajaj
Instant Water Heater (Fig. 2)
1. Mount the Majesty Instant Water Heater (IWH) at a
suitable place on the wall. Ensure that it's in a
perfectly vertical position.
2. A set of screws and Template for marking holes on
the wall are provided with this unit to enable you
mount the unit suitably on the wall.
3. Provide electric power supply connection to the
unit.
4. Please ensure that D.P. switch unit of 30 amp rating
is used.
5. Connect the inlet of the unit to the incoming water
supply line.
6. In case of multi point usage get a licensed plumber,
electrician to connect the outlet of the heater to the
various points of usage.
7. The cold and hot water pipes should not be
connected directly to the inlet and outlet of the heater. They should instead be connected by flexible tubes of
appropriate material. In case of direct pipe connections, tightening of couplings using wrench can damage
the heater unit.
8. The overall & mounting dimensions are shown in Fig.2.

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How to Operate ? -Pressure Type
Installation. (Fig. 3)
1. With this installation you can take hot water out at
more than one point of usage.
2. Allow the cold water to flow from the outlet.
3. Keep the Gate valve at the inlet ALWAYS OPEN.
4. Switch ON the power supply to the unit.
5. The hot water flow at the usage point can be controlled
by the taps provided at the usage point.
6. Ensure that Pressure at the inlet is not more than 50
PSI. In case it is more, install a Pressure Reducing
Valve at the inlet.
Under normal circumstances due to its design & operation
Instant Water Heaters are recommended for Single point usage
only (Non-Pressure type installation). However if multi-point
usage is sought, Bajaj Majesty Instant Water Heater is
recommended for usage. This is due to the multiple safety features provided in this unit.
How to Operate? -Non Pressure Type
Installation. (Fig. 4)
1. This type of Installation supplies hot water at one
point only & is the safest recommended method of
installation & usage.
2. Keep the outlet ALWAYS OPEN. DO NOT CONNECT
GATE VALVE AT THE OUTLET.
3. Provide a Gate valve at the inlet as shown in the Fig. 3.
The hot water flow through the outlet is to be controlled
by this Gate valve.
4. Allow cold water to flow from the outlet.
5. Switch ON the power supply.
6. With the help of Gate Valve at the inlet, you can control
the flow of hot water.
7. After use, first switch OFF the power supply.
8. Allow hot water to flow out. This prevents scaling of the
element and increases its life.
9. Close the Gate Valve at the inlet.
Operation of Thermostat and Thermal
cutout.
1. The new Bajaj Majesty Instant Water Heater is provided with Double Safety System of Thermostat and
Thermal cut-out. The functioning of these temperature control devices is indicated by the green and red
lamps respectively.
2. When the unit is switched ON the green lamp glows. At the pre-fixed temp. of 60oC the green lamp switches
OFF indicating that the Automatic Thermostat has switched oft the power supply to the unit.
3. When the thermostat fails to operate at the pre-fixed temperature of 60oC the red lamp switches ON. This
indicates that thermal cut-out has operated at 90oC. The red lamp also switches ON when the unit operates
without water. When the red light glows ON, the unit can be restarted by pushing the reset switch provided
outside the unit. However, in such a case it is advisable to contact the nearest Bajaj Sales & Service Station.
4. In the rare case that the Thermostat and Thermal cutout fails the fusible plug melts. This enables release of
hot water and steam. Thus it prevents any untoward incidents.
5. When the red lamp keeps glowing, contact the nearest Bajaj Sales or Service Centre.
6. Please note that in this model, the thermal cut-out is not provided with a resetting mechanism outside the
unit. It is strongly Advised not to operate the unit by resetting the thermal cut-out as the
thermostat needs to be tested/replaced.
The Do's and Don'ts
1. Read installation and operating instructions carefully before use.
2. Get an authorised plumber to install the geyser.
3. Allow the water to flow out from the outlet. Only then, switch ON the power supply.
4. After use, make sure that power supply is switched OFF before closing the inlet (non-pressure type) or outlet
(pressure type)
5. Please ensure that proper earthing is provided to the unit.
6. Please contact the nearest Bajaj Sales or Service Centre in case of any problem/non-operation of the unit.
7. The working of Thermostat should be checked once in a while by ensuring that the green light glows ON &
OFF when the unit is in use.
8. Always get the unit serviced at least once in two years. Use genuine spare parts when replacement is
necessary.

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9. Bajaj Majesty Instant water heater with 4.5 KW beating element draws more current. Hence it is
advisable to ensure that the wiring and fuse in the house is suitable to withstand such high
current. This can be done through a qualified electrician.
10. Always use a D.P. Switch fuse unit of 30 Amp rating with Bajaj Majesty Instant water heater of
4.5 KW heating element.
Don‘t s
11. Do not provide a non-return valve at the outlet in case of pressure type installation.
12. When the red light glows ON, the unit can be restarted by pushing the reset switch provided outside the unit.
However, in such a case it is advisable to contact the nearest Bajaj Sales & Service Station.
13. In case the fusible plug has operated and water flows from the drain, switch off the power supply
immediately and contact the nearest Bajaj Sales & Service Station.
14. Under no circumstances the setting of the Thermostat or Thermal cut-out should be increased
beyond the preset temperature.
15. Safety valve, Thermostat, Thermal cut-out are preset and sensitive devices. Any
tampering/resetting them could damage the unit & even prove dangerous. This should be strictly
avoided.