Electric Mini Tank

Water heaters
GL 2.5 - GL 4 - GL 6+
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 IMPORTANT SAFETY INSTRUCTIONS
WARNING When using electrical appliances, safety precautions to reduce the risk of fire, electric
shock or injury to persons should be followed, including:

1. READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER.

2. This water heater must be grounded. Connect only to properly grounded outlet.
See “GROUNDING INSTRUCTIONS” found on “INSTALLATION INSTRUCTIONS”.
3. Install or locate this water heater only in accordance with the provided installation
instructions.
4. Use this water heater only for its intended use as described in this manual.
5. Do not use an extension cord set with this water heater. If no outlet is available
adjacent to the water heater, contact a qualified electrician to have one properly
installed.
6. As with any appliance, close supervision is necessary when used by children.
7. Do not operate this water heater if it is not working properly or if it has been
damaged or dropped.
8. This water heater should be serviced only by qualified service personnel. Contact
a service person for examination, repair or adjustment.
9. Any water heater should be installed in such a manner that if it should leak, the
resulting flow of water will not cause damage to the area in which it is installed.
National Plumbing codes require a drain pan for any water heater installation.
Failure to install one is the sole responsibility of owner and/or installer. Reference
UPC 2000 (Uniform Plumbing Code) Section 510 - Protection from Damage or
IPC 200 (International Plumbing Code) Section 504- Safety Devices.

KEEP THESE INSTRUCTIONS AT HAND

SAVE THESE INSTRUCTIONS
Technical data
MODEL GL 2.5 GL 4 GL 6+
Capacity gallons 2.75 3.85 7.0 (Hor) / 5.1 (Vert)
Voltage Vac 110/120 for each model
Power at 120 Vac Watts 1500 1500 1500
Maximum Water pressure psi 150 150 150
Weight Lbs 15.5 17.3 29.5
Amperage Amps 12.50 for each model
Phases 1 1 1

WARNING The installer should review the contents of this manual with the owner upon
completion of installation, and the manual should be left with the owner and placed in
a location close to the installation.

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 FIG. 1/1 Hot water outlet
Temperature & pressure
relief valve, 3/4 NPT male
1/2 NPT male

Cold water inlet

1/2 NPT male

Temperature &
pressure relief
valve discharge
3/4 NPT female line to drain
tapping for
relief valve

COMPONENT
PARTS OF
GL 2.5 - GL 4

FIG. 1/2 Temperature & pressure COMPONENT PARTS OF GL 6+

relief valve, 3/4 NPT male (Horizontal installation)

Hot water outlet

3/4 NPT male

3/4 NPT male plug

3/4 NPT female
tapping for
relief valve Temperature &
pressure relief
valve discharge
line to drain

Cold water inlet

3/4 NPT female 3/4 NPT male
tapping

FIG. 1/3 Temperature & pressure

Cold water inlet COMPONENT
relief valve, 3/4 NPT male
3/4 NPT male PARTS OF
Hot water outlet GL 6+
3/4 NPT male (Vertical
installation)

3/4 NPT female

tapping for Temperature &
relief valve pressure relief
valve discharge
line to drain

3/4 NPT male plug

3/4 NPT female
tapping

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 FIG. 2/1 DIMENSIONS FOR GL 2.5 - GL 4
14” 12 1/4”
10 1/4”
3 3/4” 6” 7 1/2”
1/2 NPT MALE
GL 2.5
3 1/2” 3”
1”
5 1/2”

2 1/2”
14”

GL 4

FIG. 2/2 DIMENSIONS FOR GL 6+ (HORIZONTAL INSTALLATION)

14 1/2”
8 1/2”

3/4 NPT MALE

4 1/2”

11 1/2”
17 1/2”

3”

17 1/2”

FIG. 2/3 DIMENSIONS FOR GL 6+ (VERTICAL INSTALLATION)

14 1/2”
11 1/2” 8 1/2”
3/4 NPT MALE 4 1/2”
1”
6 1/2”

2 1/2”
17 1/2”

17 1/2”

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 General remarks
CAUTION The manufacturer cannot be responsible for the damages caused by improper
installation or by failure to follow instructions in this pamphlet. Comply with the
installation instructions before completing electric connection.

CAUTION The thermostat has been pre-set at the factory between 41°C (105° F) and 45° C (113° F).
CAUTION Hydrogen gas can be produced in a hot water system served by this heater that has not
been used for a long period of time (generally 2 weeks or more). Hydrogen gas is
extremely flammable. To reduce the risk of injury under these conditions, it is
recommended that the hot water faucet be opened for several minutes before using any
electrical appliance connected to the hot water system. If hydrogen gas is present, there
will probably be an unusual sound such as air escaping through the pipe as the water
begins to flow. There should be no smoking or open flame near the faucet at this time.

CAUTION Any water heater should be installed in such a manner that if it should leak, the resulting
flow of water will not cause damage to the area in which it is installed. National Plumbing
codes require a drain pan for any water heater installation. Failure to install one is the
sole responsibility of owner and/or installer. Reference UPC 2000 (Uniform Plumbing
Code) Section 510- Protection from Damage or IPC 2000 (International Plumbing Code)
Section 504- Safety Devices.

Installation instructions
MODEL GL 6+
The GL 6+ water heater can be installed under the sink.

Wall Fasten the supplied mounting bracket to the wall. Use screws that are suitable for the
mounting wall material and the weight of the heater. Hang the water heater on the bracket. Tug
(only for vertical down wards on the heater to ensure that both “fingers” of the bracket are seated in the
installation) mounting slots. Confirm water piping orientation before wall mounting. Wall bracket will
not support the GL6+ when the plumbing connections are installed horizontally.

Floor Heater can sit on floor. Confirm water piping orientation before locating on floor location.
Mounting
Wiring As per the National Electric Code the GL6+ needs to be wired with 12 GA. wire to a minimum
and 20 amp/ maximum 20 amp branch circuit. To wire the GL6+ model:
Grounding 1. Pry off the round cover plate (V Fig. 3/1) from its right hand edge (W Fig. 3/1) with a
instructions small flat-head screwdriver.
2. Remove the Phillips screw revealed beneath the round cover plate.
3. The cover (C Fig. 3/1) can now be removed by pulling out its left-hand edge. When
reassembling, work in the opposite way being careful to insert the tongue of the cover
into the slot.
4. Insert 12 AWG through conduit at rear of heater. Secure internal wire connector
(A Fig. 3/2) and connect wiring to right side of thermostat control and ground. Positive
(+) to lower terminal marked “L” (E Fig. 3/2) and Neutral to upper terminal marked “N”
(H Fig. 3/2). Unit must be grounded at groundscrew (T Fig. 3/2) on element base.
5. When the GL6+ is not within sight of the electrical circuit breakers, a circuit breaker
lockout or additional local means of disconnection for all non grounded conductors must
be provided that is within sight of the appliance. [REF NEC 422.31]

Pipe Connect the cold water inlet pipe to the inlet nipple (marked with a blue ring) and the hot
connections water outlet pipe to the outlet nipple (marked with a red ring).
The model GL 6+ can be piped horizontally from the side or vertically from the top. If you
wish to install the unit horizontally, with the piping connections on the right side, you will have
to be certain the tap between the two water tappings is plugged, the supplied Temperature
and Pressure Relief Valve will need to be installed on top. See location of T&P relief valve in
Fig. 2/2.
4

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 If you wish to install the unit vertically, with the piping connections on top, you will have to
be certain the tap on the side is plugged, the supplied Temperature and Pressure Relief
Valve will need to be installed on top. See location of T&P relief valve in Fig. 2/3.

FIG. 3/1

C
V

W F

FIG. 3/2 G
Z H

X
Y A
T

MODEL GL 2.5 - GL 4

The GL 2.5 and GL 4 water heaters can be installed under the sink.

Wall Fasten the supplied mounting bracket to the wall. Use screws that are suitable for the
mounting wall material and the weight of the heater. Hang the water heater on the bracket. Tug
down wards on the heater to ensure that both “fingers” of the bracket are seated in the
mounting slots.
5

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 Floor Heater can sit on floor.
Mounting
Pipe Connect the cold water inlet pipe to the inlet nipple (marked with a blue ring) and the hot
connections water outlet pipe to the outlet nipple (marked with a red ring).

CAUTION To reduce the risk of excessive pressures and temperatures in this water heater, install
the supplied temperature and pressure protective equipment required by local codes
but not less than a combination temperature and pressure relief valve certified by a
nationally recognized testing laboratory that maintains periodic inspection of
production of listed equipment or materials, as meeting the requirements for Relief
Valves and Automatic Gas Shut-off Devices for Hot Water Supply Systems, ANSI
Z21.22. The supplied temperature and pressure relief valve is marked with a maximum
set pressure (150 psi) that does not exceed the marked maximum working pressure
of the water heater. Install the valve in the opening provided and marked for this
purpose in the water heater, and orient it or provide tubing so that any discharge from
the valve will exit within 6 inches above, or at any distance below, the structural floor,
and cannot contact any live electrical part. The discharge opening must not be blocked
or reduced in size under any circumstances.
National Plumbing codes require a drain pan for any water heater installation. Failure
to install one is the sole responsibility of owner and/or installer. Reference UPC 2000
(Uniform Plumbing Code) Section 510- Protection from Damage or IPC 2000
(International Plumbing Code) Section 504- Safety Devices.

Closed Periodic discharge of the temperature and pressure relief valve or failure of the
system element gasket may be due to thermal expansion in a closed water supply system.
thermal The water utility supply meter may contain a check valve, backflow preventer or water
pressure reducing valve which will create a closed water system. During the heating
expansion cycle of the water heater, the water expands causing pressure inside the water heater
(for all to increase. The temperature and pressure relief valve may discharge hot water under
models) these conditions which results in a loss of energy and a build-up of lime on the relief
valve seat.
To prevent this from happening, there are two recommendations:
1. Install a diaphragm-type expansion tank that is suitable for potable water on the
cold water supply line. The expansion tank must have a minimum capacity of 1.5
U.S. gallons for every 50 gallons of stored water.
2. Install a 125 PSI pressure relief valve in the cold water supply line. Make sure the
discharge of this valve is directed to an open drain and protected from freezing.
Contact the local water supplier or plumbing inspector for information on how to
control this situation. Do not plug the temperature and pressure relief valve.

Instructions for use

Starting and Before connecting the power, fill the tank and system with water and check for leaks. To
testing be certain that all air is out of the water system, open the hot water faucets on your fixtures
until constant water flows from them, otherwise damage to the element may occur.
To start the heating cycle:
A) first make sure tank is full. Otherwise the heating element may be damaged.
B) the red light will come on and remain on until that temperature has been reached,
at which point the light will go off, but will automatically come back on when the
water temperature drops below the setting chosen.

Temperature After installation check the water temperature. If adjustment is necessary, remove front
Setting cover to adjust thermostat (D Fig. 4 -clockwise to increase the temperature and
counter clockwise to decrease it).
To reach the thermostat:
1. Pry off the round cover plate (V Fig. 3/1) from its right hand edge (W Fig. 3/1) with
a small flat-head screwdriver.
2. Remove the Phillips screw revealed beneath the round cover plate.

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 3. The cover (C Fig. 3/1) can now be removed by pulling out its left-hand edge.
When reassembling, work in the opposite way being careful to insert the tongue
of the cover into the slot.

FIG. 4 B

Maintenance instructions
Note: Do not attempt to repair this water heater yourself. Call a service person
for assistance. Always turn off the power supply to the heater prior to
servicing or draining the heater.

Periodic maintenance
Note: For most of these operations, the water will have to be drained from the heater.
For all of these operations the power supply needs to be shut off and the front
cover removed.
1. Pry off the round cover plate (V Fig. 3/1) from its right hand edge (W
Fig. 3/1) with a small flat-head screwdriver.
2. Remove the Phillips screw revealed beneath the round cover plate.
3. The cover (C Fig. 3/1) can now be removed by pulling out its left-hand
edge. When reassembling, work in the opposite way being careful to
insert the tongue of the cover into the slot.

Draining 1) If the heater has been installed with flexible hoses, shut off the power supply and
the Heater turn the heater upside down over a sink to drain the water out of it, OR
2) If the heater has been installed with rigid piping, siphon the water out through any
(lower) service valve on the (inlet side). Keep a hot water faucet open while
siphoning the water out, OR
3) If the heater has been installed with flexible hoses, it can also be emptied by
siphoning through the inlet side hose. Keep a hot water faucet open while
siphoning.

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 Removing 1. Turn off power supply and drain the heater (see previous section).
the heating 2. Remove the front cover plate, disconnect terminals X, Y and T (fig. 3/2).
element 3. Unscrew the 4 heating element retaining nuts F (fig. 3/2).
4. Remove the element. G (fig. 5/1).

FIG. 5/1

FIG. 5/2

Descaling Scale deposits can affect the heating capability of the element.
the heating Heavy scale can even cause the element to burn out. The element can be descaled
element either chemically or manually:

A) Soak the element in white vinegar or other descaling solution. Once descaled,
rinse well with fresh water, to which you should add some baking soda, OR

B) Once the element has dried up, use a soft brush (non metallic to prevent damaging
the stainless steel sheath) on element. Brush the dried mineral off. Reinstall the
element with gasket and make the wire connections.

C) Replace anode rod (N Fig. 5/2) if it is noticeably deteriorated or considerably

shorter then seen in figure 5/2.

WARNING: make sure the tank has been refilled with water before restoring power.

REPLACEMENT OF PARTS
Changing The anode rod (N fig. 5/2) helps protect the tank against corrosion. Depending on the
the anode water condition, the magnesium anode rod may need to be changed every year or so.
rod Galvanic and electrolytic corrosion can destroy a tank if the anode rod is “spent”.
Rusty water is usually an indication of a “spent” anode rod. If rusty water is present,
examine anode rod immediately. Rapid degradation of the anode rod (less than 1
year) may indicate the presence of galvanic corrosion due to “stray” direct current. In
this case, it may be necessary to add a “grounding strap” from the Ariston tank to the
copper plumbing.

1. Turn off the power supply and drain the heater (see Draining the Heater).
2. Remove heating element (see previous section).
3. Remove and replace the anode rod N Fig. 5/2.
4. Refill tank with water before restoring power.

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 Changing 1. Turn off power supply and drain the heater (see Draining the Heater).
the heating 2. Remove the heating element (see section on Removing the Heating Element).
element 3. Install new element with gasket, making sure the gasket and element are positioned
correctly. Tighten the retaining nuts and make the wire connections.
4. Refill tank with water before restoring power.

Changing 1. Turn off power supply.

the 2. Disconnect the 2 push/pull type wires on thermostat.
thermostat 3. Loosen the two brass screws at right side of thermostat and pull wires out.
4. Unscrew and remove the two phillips screws holding the thermostat down.
5. Install new thermostat and re-attach wiring and screws.

Resetting Occasionally, the high temperature limit shut off device may trigger and shut the
High Limit system down. This occurs when water temperature exceeds 190° F and shuts off
Switch power to the heating element. The shut off device may also trigger from a power
outage or electrical storm.

To reach the thermostat:

1. Pry off the round cover plate (V Fig. 3/1) from its right hand edge (W Fig. 3/1) with
a small flat-head screwdriver.
2. Remove the Phillips screw revealed beneath the round cover plate.
3. The cover (C Fig. 3/1) can now be removed by pulling out its left-hand edge. When
reassembling, work in the opposite way being careful to insert the tongue of the
cover into the slot.
4. Firmly press reset button (B Fig. 4). Reconnect power.
5. IMPORTANT: Check the operation of the thermostat, turn temperature dial from
high to low, if the red light does not go off on low setting, turn off power supply and
call a service person to replace the thermostat.
6. If the system works, place dial setting to desired setting. Note: a lower setting is
more economical and reduces the risk of scalding. Replace cover plate.

CAUTION: Call a technician if the high limit needs to be reset frequently.

Troubleshooting
Water does 1. Make sure the power supply is on and working.
not get hot 2. If light does not come on, check that the reset button is pushed in; follow steps from
previous section.
3. If the indicator light works properly but temperature does not get hot a tap, test for
a plumbing crossover; shut off cold supply to heater and open hot water tap. There
should be no water flowing. Any continued flow indicates a crossover which will
effect the temperature and will need to be corrected.
4. Replace heating element (see previous section on changing the heating element).

Light not on 1. If the light does not come on, but water gets hot, check for faulty bulb.
2. Check reset button; follow steps from previous section.

Brown water 1. Brown or rusty water indicates a “spent” anode rod. Replace anode rod.

Odor in water 1. Smelly water could be due to an unusual reaction between local water and the
heater’s anode rod. Check anode rod (see section on changing the anode rod).

Water is too 1. Remove cover plate and turn the temperature selector dial (D Fig. 4) counter
hot clockwise to lower temperature. If temperature never lowers then replace
thermostat. (see section on changing the thermostat).

Water not 1. Under Instructions for Use see Temperature Setting instruction.
hot enough
Leaking 1. Check water fittings and T & P fitting on top of tank.
2. Remove front cover and inspect heating element gasket.
9

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 10

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 ARISTON • LIMITED 6 YEARS WARRANTY
COVERAGE supplied with potable water.
ARISTON, THROUGH ITS U.S. DISTRIBUTOR
CONTROLLED ENERGY CORP., (hereinafter 5. The OWNER and not the Manufacturer or his
CEC) guarantees this water heater to the representative shall be liable for and shall pay
Owner (hereinafter “Owner”) of the water heater for all field charges for labor or other expenses
at the original installation location against incurred in the removal and/or repair of the
defects in material and workmanship for the product or any expense incurred by the owner
periods specified below. in order to repair the product.
SOME STATES DO NOT ALLOW THE
WARRANTY PERIOD EXCLUSION OR LIMITATION OF INCIDENTAL
1. The inner Tank - If the inner tank leaks within OR CONSEQUENTIAL DAMAGES, SO THE
six (6) years from the date of original installation ABOVE LIMITATION OR EXCLUSION MAY
of the water heater, because of a defect in NOT APPLY TO YOU. THIS WARRANTY
material or workmanship, CEC will furnish to GIVES YOU SPECIFIC LEGAL RIGHTS AND
such Owner a new heater of the then prevailing YOU MAY ALSO HAVE OTHER RIGHTS
comparable model. WHICH MAY VARY FROM STATE TO STATE.
2. Any Component Part Other than The
Original Inner Tank - If any component part IMPORTANT: OWNER SHALL KEEP THIS
(other than the inner tank) proven to be MAKE A CLAIM
defective in material or workmanship within one
(1) year from the date of original installation of
the water heater, CEC will furnish the Owner NOTE: A water heater should be installed in
with a replacement of the defective part(s). such a manner that if it should leak, the
resulting flow of water will not cause damage
3. Verification of Date of Original Installation to the area in which it is installed.
- When Owner cannot verify or document the
original date of installation, the warranty period
begins on the date of manufacture marked on HOW THE OWNER CAN SECURE SERVICE
the tag affixed to the water heater. OR MAKE A CLAIM
1. Owner should contact the dealer who sold
EXCLUSIONS the water heater covered by this warranty or
1. THIS LIMITED WARRANTY SHALL BE THE 2. Owner should submit the warranty claim
EXCLUSIVE WARRANTY MADE BY THE directly to CEC at the address listed below, and
MANUFACTURER AND IS MADE IN LIEU OF they will arrange for the handling of the claim
ALL OTHER WARRANTIES, EXPRESSED OR 3. Whenever any inquiry or service request is
IMPLIED (WHETHER WRITTEN OR ORAL), made, be sure to include the water heater
INCLUDING, BUT NOT LIMITED TO, model number the date of manufacture , date of
WARRANTIES OF MERCHANTABILITY AND installation, Dealer’s name and the watts and
FITNESS FOR A PARTICULAR PURPOSE. voltage.
4. When returning the water heater or
2. The Manufacturer shall not be liable for any component part(s), they must be individually
incidental, consequential, special or contingent tagged and identified with the Returned Goods
damages or expenses arising, directly or Authorization # issued by CEC and shipped
indirectly, from any defect in the water heater or prepaid to CEC at the address below.
the use of the water heater.

3. The Manufacturer shall not be liable for any

water damage arising, directly or indirectly, from
any defect in the water heater component
part(s) or from its use. COMMON SENSE HEAT & HOT WATER TECHNOLOGY

4. Manufacturer shall not be liable under this

warranty if: Controlled Energy Corp.
a) The water heater or any of its component 340 Mad River Park
parts has been subject to misuse, alteration, Waitsfield, VT 05673
866-330-2729
neglect or accident, or
b) The water heater has not been installed in www.controlledenergy.com/tech
accordance with the applicable local
plumbing and/or building code(s) and/or
regulation(s), or
c) The water heater has not been installed in
accordance with the printed manufacturer’s
instructions, or
d) The water heater is not continuously

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