Stieble Eltron Electronically Controlled Instantaneous Water Heater Installation Manual

OPERATION AND INSTALLAT ION

ELECTRONICALLY CONTROLLED INSTANTANEOUS WATER HEATER

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Conforms to ANSI/UL Std. 499 Certiﬁed to CAN/CSA Std. C22.2 No.88

CONTENTS | OPERATION

OPERATION

1. General information �� 2

1.1 Safety information �� 2

1.2 Other symbols in this document �� 3

2. Safety �� 3

2.1 Intended use �� 3

2.2 Safety precautions �� 3

2.3 Test symbols �� 3

2.4 Licenses / certiﬁcates �� 3

3. Functional characteristics �� 4

4. Troubleshooting �� 5

4.1 Fault table �� 5

4.2 Solutions based on symptoms in fault table �� 5

4.3 Cold element resistivity by heater type (in Ohms) �� 5

5. Mounting the water heater �� 6

5.1 Mounting �� 6

6. Water connections �� 6

6.1 Venting the air�� 6

6.2 Leakage check �� 7

7. Electrical connection �� 7

7.1 Safety�� 7

7.2 Electric supply �� 7

7.3 Terminal block torque �� 7

8. Commissioning �� 7

9. Maintenance �� 7

10. Technical data �� 8

10.1 Technical data - CE series �� 8

10.2 Technical data - CES series �� 9

10.3 Technical data - CERO series ��10

10.4 Dimension drawings ��11

10.5 Wiring diagrams �� 14

10.6 CE/CES/CERO Temperature rise ��26

11. Spare parts and service advice �� 27

12. Warranty ��29

OPERATION

1. General information

Read this entire manual. Failure to follow all the guides, instructions and rules could cause personal injury or property damage. Improper installation, adjustment, alteration, service and use of this unit can result in serious injury.

This unit must be installed by a licensed electrician and plumber. The installation must comply with all national, state and local plumbing and electric codes. Proper installation is the responsibility of the installer. Failure to comply with the installation and operating instructions or improper use voids the warranty.

Save these instructions for future reference. The installer should leave these instructions with the consumer.

If you have any questions regarding the installation, use or operation of this water heater, or if you need any additional installation manuals, please call our technical service line at 800.582.8423 (USA and Canada only). If you are calling from outside the USA or Canada, please call USA 413.247.3380 and we will refer you to a qualiﬁed Stiebel Eltron service representative in your area.

This is the safety alert symbol. It is used to alert you to

potential personal injury hazard. Obey all safety messages that follow this symbol to avoid possible injury or death.

1.1 Safety information

1.1.1 Structure of safety information

KEYWORD: Type of risk

Here, possible consequences are listed that may result from not observing the safety information.

f Steps to prevent the risk are listed.

1.1.2 Symbols, type of risk

Symbol Type of risk

Injury

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Electrocution

Burns or scalding

OPERATION

SAFETY

1.1.3 Keywords

KEYWORD Description

DANGER If this information is not observed, it will result in serious

injury or death.

WARNING If this information is not observed, it can result in serious

injury or death.

CAUTION If this information is not observed, it can lead to medium or

minor injury.

1.2 Other symbols in this document

Note

Notes are bordered by horizontal lines above and below the text. General information is identiﬁed by the symbol shown on the left.

f Read these notes carefully.

Symbol

f This symbol indicates that you have to do something. The ac-

tion you need to take is described step by step.

Damage to the water heater and environment

Appliance disposal

Damage to the water heater and the environment

The water heater must be installed by a licensed electrician and plumber. The installation must comply with all national, state and local plumbing and electric codes. Service of the water heater must be performed by qualiﬁed service technicians.

DANGER: Electrocution Before proceeding with any installation, adjustment, alteration, or service of the water heater, all circuit breaker switches servicing the water heater must be turned off. Make sure that nobody can activate the breaker in the distribution panel during your service work on the water heater.

DANGER: Electrocution The water heater must be properly grounded. Failure to electrically ground the product could result in serious personal injury or death.

DANGER: Electrocution Never open the water heater cover unless the electricity servicing the water heater is turned off.

DANGER: Burns Water temperatures over 125 °F (52 °C) can cause severe burns instantly or death from scalding. A hot water scalding potential exists if the thermostat on the water heater is set too high. Households with small children, disabled or elderly persons may require that the thermostat be set at 113 °F (45 °C) or lower to prevent possible injury from hot water.

ENGLISH

2. Safety

Observe the following safety information and regulations.

Operate the water heater only when fully installed and with all safety equipment ﬁtted.

2.1 Intended use

The water heater is intended for heating domestic hot water and can supply several draw-off points.

Any other use beyond that described shall be deemed inappropriate, and may void the manufacturer’s warranty.

Observation of these instructions is also part of the correct use of this water heater.

2.2 Safety precautions

DANGER: Injury

Please read and follow these instructions. Failure to follow these instructions could result in serious personal injury or death.

WARNING: Injury

Where children or persons with limited physical, sensory or mental capabilities are to be allowed to control this water heater, ensure that this will only happen under supervision or after appropriate instructions by a person responsible for their safety. Children should be supervised to ensure that they never play with the water heater.

2.3 Test symbols

See the type label on the water heater.

2.4 Licenses / certiﬁcates

- UL (USA) Std. 499: 2014 Ed.14

- CSA (Canada) Std. CSA C22.2#88 issue:1958/09/01 (R2013)

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OPERATION

FUNCTIONAL CHARACTERISTICS

3. Functional characteristics

CE/CES/CERO models are three-phase instantaneous electric water heaters, intended for commercial use, permanently wired in Delta or Wye conﬁguration. Each series has models with power output ranging from 12–144 kW.

CE models feature adjustable temperature output with a range of 60–185 °F (16–85 °C), user-adjustable in one degree increments (°F or °C) via a push button switch (12).

CES models limit the output temperature according to OSHA requirements to a maximum of 90 °F (32 °C). They are factory set at a ﬁxed temperature of 85 °F (29 °C).

CERO models have the same temperature adjustment range as CE models, but are designed for caustic liquids like salt water. To avoid corrosion, titanium elements (1) are used instead of the standard incoloy elements (1) found in CE and CES models.

CE/CES/CERO 12–18 kW models contain 3 heating elements, 24–36 kW models contain 6 heating elements, 48–72 kW models contain 12 heating elements, 81–108 kW models contain 18 heating elements, and 120–144 kW models contain 24 heating elements. The elements used in different conﬁgurations are for 208, 240, 277, and 288 V.

CE/CES/CERO models are available in a NEMA 3 (standard), a NEMA4 (optional), or a NEMA 4X (optional) enclosure.

1 Element 2 Individual element thermostat/safety cut-off 3 Pressure sensor switch 4 Flow sensor 5 Terminal block 6 Electronic board PCB 7 Fuse box 8 Transformer 9 Power indicator light 10 On/off indicator light 11 On/of f switch 12 Temperature set switch 13 Wire support

The heater’s outgoing water temperature is controlled with an electronic board (6) receiving sensor information from the ﬂow sensor (4), and an NTC sensor placed to detect incoming and outgoing water temperatures. The element turns on once the ﬂow sensor detects a ﬂow rate at or above the minimum activation rate. The board calculates the necessary heating capacity, depending on required temperature rise and ﬂow rate.

Safety is provided by an individual thermostat/safety cut-off (2) for each element, designed to avoid excessive heat buildup. A pressure sensor switch (3) is installed in the ﬁrst chamber to eliminate any possibility of dry ﬁring. Each element circuit is individually fused. The fuses are located in the fuse box (7).

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OPERATION

TROUBLESHOOTING

In order to avoid latent heat buildup, the unit has an electronically controlled delay timer that delays the activation of the heating element slightly. This feature allows air to be purged from the system before the element arrangement is activated to heat, and eliminates scalding risk. Beside the electronic delay, the board has no additional safety functions.

The display monitor shows the set point temperature, the actual outgoing water temperature, the ﬂow rate and the heating rate. It is possible to change the units from °F / gpm to °C /l/min.

Safety is provided by a pressure relief valve with a 150 psi setting.

4. Troubleshooting

Before troubleshooting, check the following items:

f Is the water pressure more than 3 psi (0.21 bar)?

f Is the electric supply a:

- Wye (4 wires + ground) or

- Delta (three wires + ground)?

f Does the electric supply match the voltage and conﬁguration

designation shown on the unit nameplate?

f If the heater fails to maintain the desired temperature, check

the ﬂow rate according to the table. See 10.6, “CE/CES/CERO Temperature rise”, pg. 26.

The following items are required for testing to diagnose a possible failure:

Continuity tester, 600 V voltage meter, amp and Ohm meter.

Use the following steps for diagnosis:

f Turn off the power supply to the heater.

Caution: follow all safety precautions in 2.2, “Safety precautions”, pg. 3.

f Turn off the heater on/off switch (12).

f Open the heater enclosure.

f Check for any loose connections, and properly operating

breakers.

f Purge the heater to cool down the heater and to reset the elec-

tronic thermostat function.

f Turn the main breaker back on. Turn on the heater on/off

switch (12). For resistivity test turn the breaker off and check voltage just in case.

4.1 Fault table

Symptom Possible cause Action

No hot water (A) (B) (C) (D) (E) (F)

(G) (H) (I) Reduced (J) hot water (K) (L) Lukewarm (M) water (N)

Circuit breakers off Turn circuit breakers on On/off switch (12) defect Check voltage Pressure switch (3) Check voltage PCB sensor PCB voltage supply Transformer

Safety cut-off Check voltage Fuse (7) Check voltage Element (1) Check resistivity Ball valve closed (14, 15) Open ball valve Filter clogged Clean filter Air in the system Vent the system Fuse burned (7) Check continuity Triac failure Check amperage

Check sensor NTC and flow sensor, PCB voltage supply Check voltage X8 primar y Check voltage yellow-white (secondary)

4.2 Solutions based on symptoms in fault table

Symptom Analysis Solution

(A) (B) (C) (D)

(E) (F) (G) (H) (I) (M)

(N)

No power Activate power No continuity Replace on/off switch (12) No continuity Replace pressure switch (3) No continuity NTC No continuity flow sensor X8(X10) > 200 V, A1 PWR IN 1A1 PWR In 2 > 20 V No continuity in cold status Replace safety cut-off No continuity Replace fuse (7) Resistivity nok Replace element (1) No continuity

No ampacity element supply Replace triac

Replace sensor Replace flow sensor (4) Replace transformer (10)

Replace fuse (7), check resistivity of the associated element

4.3 Cold element resistivity by heater type (in Ohms)

(kW) 208 V 240 V 400 V Y 480 V Y 400 V ∆ 480 V ∆ 575 V ∆

12 11.41 Ω 13.55 Ω 12.48 Ω 16.88 Ω - - 15 8.07 Ω 11.41 Ω 11.41 Ω 13.55 Ω - - 18 6.93 Ω 9.32 Ω 8.07 Ω 12.48 Ω - 18.73 Ω 24 11.41 Ω 13.55 Ω 13.55 Ω 20.53 Ω 9.32 Ω 13.55 Ω 20.53 Ω 27 9.32 Ω 12.48 Ω 11.41 Ω 16.88 Ω 8.07 Ω 12.48 Ω 36 6.93 Ω 9.32 Ω 9.32 Ω - 6.93 Ω 9.32 Ω 13.55 Ω 48 11.41 Ω 13.55 Ω - - 9.32 Ω 13.55 Ω 20.53 Ω 54 9.32 Ω 12.48 Ω - - 8.07 Ω 12.48 Ω 60 8.07 Ω 11.41 Ω - - 6.93 Ω 11.41 Ω 72 6.93 Ω 9.32 Ω - - - 9.32 Ω 13.55 Ω 81 - - - - 9.32 Ω 12.48 Ω -

90 - - - - 8.07 Ω 11.41 Ω 108 - - - - 6.93 Ω 9.32 Ω 13.55 Ω 120 - - - - 8.07 Ω 11.41 Ω 144 - - - - 6.93 Ω 9.32 Ω 13.55 Ω

Depending on element type, hot resistivity may be 5% more than cold resistivity.

ENGLISH

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INSTALLATION

MOUNTING THE WATER HEATER

INSTALLATION

5. Mounting the water heater

CAUTION: Injury

Hot water outlet pipes leaving unit can be hot to the touch. Insulation must be used for hot water pipes below 36˝ (0.9 m) due to burn risk to children.

NOTICE:

This unit should not be installed in a location where it may be exposed to temperatures less than 36 °F (2 °C). If the unit may be subject to freezing temperatures all water must be drained from the unit. Failure to comply with this instruction voids all warranties. The unit should be located in an area where water leakage from the unit or connections will not result in damage to the area adjacent to the unit. If such a location cannot be avoided it is recommended that a drain pan be installed under the unit.

Application

Before mounting, double check that the correct voltage the unit requires matches the voltage of the local power supply. The voltage and conﬁguration (Wye or Delta) are declared on the nameplate. Make sure that the supply wire size corresponds to the heater capacity and wire run according to NEC. Installation carried out by a licensed electrician will ensure this. The hot water supply includes an air vent. The incoming water supply is equipped with a pre-installed pressure relief valve. For water supply line positions, see section

10.4, “Dimension drawings”, pg. 11.

5.1 Mounting

f Install the water heater as close as possible to the main hot

water draw off points.

f Keep a minimum of 5˝ (127 mm) clearance on all sides for

service.

5.1.2 Mounting screw positions

Enclosure 3-element

12–18 k W

NEMA 3 - (A) X/Y 8 1/8˝ / 17 1/8˝ 9 5/16˝ / 23 7/8˝ 9 5/16˝ / 32 3/8˝ NEMA 4 - (B) X/Y 22 7/16˝ / 25 ¼˝ 22 7/16˝ / 25 ¼˝ 22 7/16˝ / 49 ¼˝ NEMA 4X - (B) X/Y 22 7/16˝ / 25 ¼˝ 22 7/16˝ / 25 ¼˝ 22 7/16˝ / 49 ¼˝

Enclosure 18-element

81–108 k W

NEMA 3 - (B) X/Y 22 7/16˝ / 49 ¼˝ 22 7/16˝ / 49 ¼˝ NEMA 4 - (B) X/Y 22 7/16˝ / 49 ¼˝ 22 7/16˝ / 49 ¼˝ NEMA 4X - (B) X/Y 22 7/16˝ / 49 ¼˝ 22 7/16˝ / 49 ¼˝

6-element 24–36 kW

24-element 120–14 4 kW

12-element 48–72 kW

6. Water connections

NOTICE:

Excessive heat from soldering on copper pipes near the heater may cause damage.

NOTICE:

Hard water or water with a high mineral count may damage the unit. Damage to the unit caused by scale or a high mineral count is not covered under the warranty.

f NEMA 3 enclosures require a minimum clearance of 20˝ (510

mm) on the front side to allow the hinged cover to be fully opened.

f If there is a drain tube connected to the pressure relief valve,

make sure that the drain water is not blocked by anything.

5.1.1 Enclosure dimensions, excluding plumbing ﬁttings

NEMA 3 NEMA 4 / 4X

Capacity

12–18 kW 3 16 1/16˝ 15 1/8˝ 9 1/8˝ 24˝ 24˝ 9 ½˝ 24–36 kW 6 18 5/8˝ 21 7/8˝ 9 ¼˝ 24˝ 24˝ 9 ½˝ 48 –72 kW 12 18 5/8˝ 3 0 ½˝ 9 ¼˝ 24˝ 48˝ 13 5/8˝ 81–108 kW 18 24˝ 48˝ 13 5/8˝ 24˝ 48˝ 13 5/8˝ 120–14 4 kW 24 24˝ 48˝ 13 5/8˝ 24˝ 48˝ 13 5/8˝

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No. of Element s

Width (X)

Height (Y)

Depth (Z)

Width (X)

Height (Y)

Depth (Z)

6.1 Venting the air

f Before the heater is connected to the water supply, make sure

that the water supply is ﬂushed ﬁrst to ensure it is free from any scale and dirt. The water pressure needs to be less than 145 psi (10 bar).

f If the water pressure exceeds 145 psi (10 bar), install a pressure

reducing valve in the cold water pipework. Cold water supply (inlet) is located on the bottom right.

f Before the heater is connected to the electric supply, make sure

that the water supply line is ﬂushed for 3 minutes minimum to vent any air pockets out of the tubing system.

f Open the service screw on the vent valve to release the air.

f Open and close the ball valve on the cold water supply side

several times to release any air pockets from the heater.

f Once the air is released, close the screw on the vent valve.

INSTALLATION

ELECTRICAL CONNECTION

6.2 Leakage check

Once all plumbing work is done, check for leaks. If necessary, take corrective action.

7. Electrical connection

7.1 Safety

DANGER: Electrocution

Before proceeding with any installation, adjustment, alteration, or service of the water heater, all circuit breaker switches servicing the appliance must be turned off. Make sure that nobody can activate the breaker in the distribution panel during your service work on the appliance.

DANGER: Electrocution The appliance must be properly grounded. Failure to electrically ground the product could result in serious personal injury or death.

7.2 Electric supply

Check the electric supply infrastructure:

f Connect the live wires to the contactor (B).

f Pull the ground wire into the ground terminal (C).

7.3 Terminal block torque

To tighten wire to the terminal block, use the proper torque value according to NEC:

Wire gauge (AWG) Torque (lb- in )

8 80 6–4 165 3 275

The water heater should be connected to a properly grounded dedicated branch circuit of proper voltage rating. In installations with several CE/CES/CERO water heaters, each unit requires a separate circuit with wire sizes according to NEC.

8. Commissioning

f Close the front cover before the electric supply is turned on.

f Before the heater is activated by switching the electric supply

on, run hot water via a hot water faucet for a minimum of 3 minutes to purge all air from the system.

≥ 3 min.

ENGLISH

For Delta conﬁguration, a three-phase wire and a ground are supplied. For a Wye conﬁguration, a three-phase wire, a neutral, and a ground are supplied. The conﬁguration and voltage are declared on the unit name plate on the enclosure front type plate.

f Feed the wire through the knockout (A) using a Romex clamp

for strain relief.

f Turn on the circuit breaker.

f Turn on the heater via the on/off switch.

f Check the water temperature after several minutes of

operation.

f Explain the end user how the heater operates.

f Make the end user aware that hot water can cause injures if it

is more than 125 °F (52 °C).

f Draw special attention to the safety information.

f Hand over the operating manual to the end user.

9. Maintenance

DANGER: Electrocution

Before proceeding with any installation, adjustment, alteration, or service of the appliance, all circuit breaker switches servicing the appliance must be turned off. Make sure that nobody can activate the breaker in the distribution panel during your service work on the appliance.

Stiebel Eltron water heaters are designed for a very long service life. Actual life expectancy depends on water quality and use. To ensure consistent water ﬂow, remove scale build up on the faucet or any connected ﬁxtures.

D0000053277

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INSTALLATION

Item Number Voltage

KW Full Load

3P Breaker

No. of

Pipe

Standard

TECHNICAL DATA

10. Technical data

10.1 Technical data - CE series

3-phase

CE 12 KW CE-012-208D 208 11.27 31.27 35 3 ¾ 161⁄16 x 151⁄8 x 91⁄8

Amp Draw

Size (A)

Elements

Size

(inches)

Enclosure Size

Excluding ﬁttings (W x H x D in inches)

CE-012-240D 240 12.50 30.07 35 CE-012-400Y 400 Wye 12.41 17.91 20

CE 15 KW C E- 01 5-2 08D 208 15.77 43.78 50 3 ¾ 16

CE-012-480Y 480 Wye 13.50 16.24 20

⁄16 x 151⁄8 x 91⁄8 CE-015-24 0D 240 15.00 36.08 40 CE-015-4 00Y 400 Wye 13.78 19.88 25 CE-015-4 80Y 480 Wye 16.65 20.03 25

CE 18 KW C E- 01 8-208D 208 18.00 49.96 60 3 ¾ 16

⁄16 x 151⁄8 x 91⁄8 CE-018-24 0D 240 18.00 43.30 50 CE-018-400Y 400 Wye 19.29 27. 84 30 CE-018-480Y 480 Wye 18.00 21.65 25

CE 24 KW CE-024-208D 208 22.53 62.55 70 6 ¾ 18

CE-018-480D* 480 18.00 21.65 25 6

⁄8 x 217⁄8 x 9¼ CE-024-240D 240 25.00 60.14 70 CE-024-400D 400 25.00 36.08 40 CE-024-400Y 400 Wye 24.82 35.82 40 CE-024-480D 480 25.00 30.07 35 CE-024-480Y 480 Wye 22.20 26.70 30

CE 27 KW CE-027-208D 208 27.04 75.06 80 6 ¾ 18

CE-024-575D 575 24.00 24.10 30

⁄8 x 217⁄8 x 9¼ CE-027-240D 240 27.02 65.01 80 CE-027-400D 400 29.17 42.10 50 CE-027-400Y 400 Wye 27.55 39.77 45

CE-027-480D 480 27.02 32.51 40 CE-027-480Y 480 Wye 27.00 32.48 40

CE 36 KW CE-036-208D 208 36.00 99.93 110 6 ¾ 18

⁄8 x 217⁄8 x 9¼ CE-036-240D 240 36.00 86.60 100 CE-036-400D 400 33.28 48.04 60 CE-036-400Y 400 Wye 33.06 47.72 60 CE-036-480D 480 36.00 43.30 50 CE-036-575D 575 36.00 36.15 40

CE 48 KW C E- 048-208 D 208 45.07 125.09 150 12 1 18

⁄8 x 30½ x 9¼ CE-0 4 8-240D 240 50.00 120.28 150 CE-048-400D 400 48.61 70.16 80 CE-048-480D 480 50.00 60.14 70

CE 54 KW C E- 054-20 8D 208 54.08 150.11 175 12 1 18

CE-048-575D 575 47.99 48.19 60

⁄8 x 30½ x 9¼ CE-0 54-24 0D 240 54.05 130.02 150 CE-054-400D 400 58.33 84.20 100 CE-054-480D 480 54.05 65.01 80

CE 60 KW CE-060-208D 208 63.09 175.13 200 12 1 18

⁄8 x 30½ x 9¼ CE-060-240D 240 60.00 144.34 175 CE-060-400D 400 66.57 96.08 110 CE-060-480D 480 60.00 72.17 80

CE 72 KW CE-072-208D 208 72.00 199.85 225 12 1 18

⁄8 x 30½ x 9¼ CE-072-240D 240 72.00 173.21 200 CE-072-480D 480 72.00 86.60 100 CE-072-575D 575 72.00 72.29 80

CE 81 KW C E- 081-40 0D 400 75.00 108.25 125 18 1 24 x 48 x 13

CE-081-480D 480 81.07 97.52 110

CE 90 KW CE-090-400D 400 8 7.50 126.30 150 18 1 24 x 48 x 13

⁄8

CE-090-480D 480 90.00 108.25 125

CE 108 KW CE -10 8-4 0 0D 400 99.85 144.12 175 18 1 24 x 48 x 13

⁄8 CE-108-480D 480 108.00 129.90 150 CE-108-575D 575 108.00 108.44 125

CE 120 KW CE -120 -40 0 D 400 116.67 168.39 200 24 1¼ 24 x 48 x 13

⁄8 CE-12 0-4 80D 480 120.00 144.34 175

CE 144 KW CE -14 4-400 D 400 133.14 192.17 225 24 1¼ 24 x 48 x 13

⁄8 CE-14 4- 4 80D 480 144.00 17 3.21 200 CE-144-575D 575 144.00 144.59 175

*CE-018 480 V Delta (6-element

heater) available at extra cost

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INSTALLATION

TECHNICAL DATA

10.2 Technical data - CES series

Item Number Voltage

3-phase

CES 12 KW CES-012-208D 208 11.27 31.27 35 3 ¾ 161⁄16 x 151⁄8 x 91⁄8

CES-012-240D 240 12.50 30.07 35 CES-012-400Y 400 Wye 12.41 17.91 20 CES-012-480Y 480 Wye 13.50 16.24 20

CES 15 KW CE S-015-20 8D 208 15.77 43.78 50 3 ¾ 16

CES-015-240D 240 15.00 36.08 40 CES-015-400Y 400 Wye 13.78 19.88 25 CES-015-480Y 480 Wye 16.65 20.03 25

CES 18 KW CE S-018-20 8D 208 18.00 49.96 60 3 ¾ 16

CES-018-240D 240 18.00 43.30 50 CES-018-400Y 400 Wye 19.29 27. 8 4 30 CES-018-480Y 480 Wye 18.00 21.65 25 CES-018-480D* 480 18.00 21.65 25 6

CES 24 KW CES-024-208D 208 22.53 62.55 70 6 ¾ 18

CES-024-240D 240 25.00 60.14 70 CES-024-400D 400 25.00 36.08 40 CES-024-400Y 400 Wye 24.82 35.82 40 CES-024-480D 480 25.00 30.07 35 CES-024-480Y 480 Wye 22.20 26.70 30 CES-024-575D 575 24.00 24.10 30

CES 27 KW CES-027-208D 208 27.04 75.06 80 6 ¾ 18

CES-027-240D 240 27.02 65.01 80 CES-027-400D 400 29.17 42.10 50 CES-027-400Y 400 Wye 27. 55 39.77 45

CES-027-480D 480 27.02 32.51 40 CES-027-480Y 480 Wye 27.00 32.48 40

CES 36 KW CE S-036-20 8D 208 36.00 99.93 110 6 ¾ 18

CES-036-240D 240 36.00 86.60 100 CES-036-400D 400 33.28 48.04 60 CES-036-400Y 400 Wye 33.06 47.72 60 CES-036-480D 480 36.00 43.30 50 CES-036-575D 575 36.00 36.15 40

CES 48 KW CE S-0 48-2 08D 208 45.07 125.09 150 12 1 18

CES-048-240D 240 50.00 120.28 150 CES-048-400D 400 48.61 70.16 80 CES-048-480D 480 50.00 60.14 70 CES-048-575D 575 47.99 48.19 60

CES 54 KW CES-054-208D 208 54.08 150.11 175 12 1 185⁄8 x 30½ x 9¼

CES-054-240D 240 54.05 130.02 150 CES-054-400D 400 58.33 84.20 100 CES-054-480D 480 54.05 65.01 80

CES 60 KW CES-060-208D 208 63.09 175.13 200 12 1 18

CES-060-240D 240 60.00 144.34 175 CES-060-400D 400 66.57 96.08 110 CES-060-480D 480 60.00 72.17 80

CES 72 KW CES-072-208D 208 72.00 199.85 225 12 1 18

CES-072-240D 240 72.00 173.21 200 CES-072-480D 480 72.00 86.60 100 CES-072-575D 575 72.00 72.29 80

CES 81 KW CE S- 081-40 0D 400 75.00 108.25 125 18 1 24 x 48 x 13

CES-081-480D 480 81.07 97.52 110

CES 90 KW CES-090-400D 400 87. 50 126.30 150 18 1 24 x 48 x 135⁄8

CES-090-480D 480 90.00 108.25 125

CES 108 KW CES-10 8-4 00D 400 99.85 14 4.12 175 18 1 24 x 48 x 13

CES-108-480D 480 108.00 129.90 150 CES-108-575D 575 108.00 108.44 125

CES 120 KW CES-12 0-4 0 0D 400 116.67 168.39 200 24 1¼ 24 x 48 x 13

CE S-1 20- 4 80D 480 120.00 144.34 175

CES 144 KW CES-14 4-4 00D 400 133.14 192.17 225 24 1¼ 24 x 48 x 13

CE S-144-480 D 480 144.00 173.21 200 CES-144-575D 575 144.00 144.59 175

KW Full Load

Amp Draw

3P Breaker Size (A)

No. of Elements

Pipe Size

(inches)

Standard Enclosure Size

Excluding ﬁttings (W x H x D in inches)

⁄16 x 151⁄8 x 91⁄8

⁄8 x 217⁄8 x 9¼

⁄8 x 30½ x 9¼

⁄8

ENGLISH

*CES-018 480 V Delta (6-element

heater) available at extra cost

WWW.STIEBEL-ELTRON-USA.COM CE CES CERO SERIES| 9

INSTALLATION

TECHNICAL DATA

10.3 Technical data - CERO series

Item Number Voltage

3-phase

CERO 12 KW CERO-012-208D 208 10.15 28.17 35 3 ¾ 161⁄16 x 151⁄8 x 91⁄8

CERO-012-240D 240 12.50 30.07 35 CERO-012-400Y 400 Wye 11.48 16.57 20 CERO-012-480Y 480 Wye 11.10 13.35 15

CERO 15 KW CERO-015-208D 208 13.52 37.53 45 3 ¾ 16

CERO-015-240D 240 13.51 32.51 40 CERO-015-400Y 400 Wye 12.41 17.91 20 CERO-015-480Y 480 Wye 16.65 20.03 25

CERO 18 KW CERO-018-208D 208 18.00 49.96 60 3 ¾ 16

CERO-018-240D 240 18.00 43.30 50 CERO-018-400Y 400 Wye 16.53 23.86 30 CERO-018-480Y 480 Wye 18.00 21.65 25 CERO-018-480D* 480 16.66 20.04 25 6

CERO 24 KW CERO-024-208D 208 20.30 56.34 70 6 ¾ 18

CERO-024-240D 240 25.00 60.14 70 CERO-024-400D 400 25.00 36.08 40 CERO-024-400Y 400 Wye 24.82 35.82 40 CERO-024-480D 480 25.00 30.07 35 CERO-024-480Y 480 Wye 22.20 26.70 30 CERO-024-575D 575 24.00 24.09 30

CERO 27 KW CERO-027-208D 208 27.04 75.06 80 6 ¾ 18

CERO-027-240D 240 27.02 65.01 80 CERO-027-480D 480 27.02 32.50 40

CERO 36 KW CERO-036-240D 240 36.00 86.60 100 6 ¾ 18

CERO-036-400D 400 33.28 48.04 60 CERO-036-400Y 400 Wye 33.06 47.72 60 CERO-036-480D 480 36.00 43.30 50 CERO-036-575D 575 36.00 36.15 40

CERO 48 KW CERO-048-240D 240 50.00 120.28 150 12 1 18

CERO-048-400D 400 50.00 72.17 80 CERO-048-480D 480 50.00 60.14 70 CERO-048-575D 575 47.99 48.19 60

CERO 54 KW CERO-054-208D 208 54.08 150.11 175 12 1 18

CERO-054-240D 240 54.05 130.02 150 CERO-054-480D 480 54.05 65.01 70

CERO 72 KW CERO-072-240D 240 72.00 173.21 200 12 1 18

CERO-072-480D 480 72.00 86.60 100 CERO-072-575D 575 71.99 72.28 80

CERO 81 KW CERO-081-400D 400 75.00 108.25 125 18 1 24 x 48 x 13

CERO-081-480D 480 81.07 97.52 110

CERO 90 KW CERO-090-480D 480 99.91 120.17 150 18 1 24 x 48 x 13 CERO 108 KW CERO-108-400D 400 99.85 144.12 175 18 1 24 x 48 x 135⁄8

CERO-108-480D 480 108.00 129.90 150 CERO-108-575D 575 108.00 108.44 125

CERO 144 KW CERO-144-400D 400 133.14 192.17 225 24 1¼ 24 x 48 x 13

CERO-144-480D 480 144.00 173.21 200 CERO-144-575D 575 144.00 144.59 175

KW Full Load

Amp Draw

3P Breaker Size (A)

No. of Elements

Pipe Size

(inches)

Standard Enclosure Size

Excluding ﬁttings (W x H x D in inches)

⁄16 x 151⁄8 x 91⁄8

⁄8 x 217⁄8 x 9¼

⁄8 x 30½ x 9¼

⁄8

*CERO-018 480 V Delta (6-element

heater) available at extra cost

10 | CE CES CERO SERIES WWW.STIEBEL-ELTRON-USA.COM

+ 22 hidden pages

Stieble Eltron Electronically Controlled Instantaneous Water Heater Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual