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AC ELWA

®

 Installation and Operating, Version 1.0, Date 2016-01-23 

PLA Settings 

1x: Setup mode

6x: Charge

6x: Charge

1x: Setup mode

Normal mode

Normal mode

Reheat on

Stratification

Synchron

Reheat off

2x: Setup time

2x: Setup time

2x: Setup time

0x: 

 time

0

_:__

1x: 1

 time

_:__

2x: 2

 time

_:__

3x: Setup time

3x: Setup time

0x:  0

 time

1 :__

9x: 

 time

1 :__

9

4x: Setup time

4x: Setup time

short keystroke

1 s keystroke

1 s keystroke

5 s keystroke

LED on

LED flashes

5 s keystroke

0x: 

00 time

10:

3x: 

45 time

10:

1

1x: 15

2

2x: 30

3

4 5

6 7

8

 

 
The value for backup heating or stratification / synchronous charge is stored with 1 second keystroke 

permanently. Menus are automatically exited without saving if key is not pressed for 30 seconds. 

Reheating:  

In the first menu item reheating can be enabled. This function is for automatic hot water ensuring. This allows 
you to switch off the heating system used normally to heat water. Reheating is useful in non-heating period. 
If reheating is on, all connected AC ELWAs which have an adjusted reheating temperature will be activated 

from 16:00-23:00, regardless of whether or not excess power is available. The AC ELWAs then heat to each 

setpoint. 

Time of day 

The time setting is relevant to the reheating. The accuracy of time is 15 minutes. 

Note: time is not maintained during a power failure! 
 

Stratification and synchronous charge: 

x

 

The PLA can control the AC ELWAs with different priorities: 
In stratification mode, the AC ELWAs will be driven to their rated power in order (according to their 

number, smallest first).

 

x

 

In synchronous mode all connected ELWAs are controlled with the same power.

Summary of Contents for AC ELWA Series

Page 1: ...h Universal Interface The PLA Meter Controller is incorporated in the power distribution immediately after utility meter fuses It is suitable for single phase and three phase systems The neutral conductor shall be connected in any case Any other use than described above may damage the device moreover this involves dangers such as short circuit fire electric shock etc The safety instructions and th...

Page 2: ... AC ELWA must be connected to a nominal voltage of 230 VAC The circuit breaker of the grid connection for AC ELWA must be rated 13 A to 16 A AC ELWA can be adjusted accordingly The PLA Meter Controller must be connected to 1 x 230 V AC or 3 x 230 VAC with Neutral The allowed fusing of the mains connection may be max 65 A The safety thermostat responds to 98 3 C and the unit switches off permanentl...

Page 3: ...led with hemp or other sealants During mounting you have to screw without any effort until the seal rests lightly Make sure that the O ring is clean in the groove of the plastic part Tighten the heater with a spanner nominal width 60 mm The tightening torque must not exceed 80 Nm In no case the heater may be tightened by turning the metal case If the device does not stand up straight power cord do...

Page 4: ... connected to the N pole of the socket check with voltage meter AC ELWA has to be connected to a 13 or 16A circuit breaker socket The PE conductor of the socket must be present Pay attention to other loads on the line circuit this may trip the circuit breaker Electrical connection PLA Remove the fuses after the utility meter before connecting There are at least one phase single phase at utility me...

Page 5: ...ol cable for PLA is attached to the two pin plug to the AC ELWA 0 5 1 5 mm The poles L and N on the connector are short circuited inside the unit so that a redirect to other AC ELWAs up to 6 is possible Installation of the plug The labels L and N on the connector have no meanings Never connect the control wire with L or N of the wall socket Connection of the control line at the PLA Electrical conn...

Page 6: ...ED off temperature adjustment knob 1 6 AC ELWA number in the operation of multiple devices on a PLA 13A 16A circuit protection Green LED reaches desired temperature flashes in standby LED yellow mains operation LED red no control signal or disturbance Green LED reaches desired temperature flashes in standby LED yellow heating LED red no control signal or disturbance Configuration button Load side ...

Page 7: ...on 13A 16A The AC ELWA can produce up to 3 000 W 16 A For 13 A fused circuits the power can be limited to 2 500 W Configure the device as follows 1 Disconnect power plug 2 Set the temperature knob to wrench icon 3 Insert power plug X all 3 LEDs flash Setup mode is active 4 Set temperature control knob to 13A X LEDs run from top to bottom green yellow red green 5 Value is saved automatically if the...

Page 8: ...follows 1 Disconnect power plug 2 Turn temperature control knob to wrench icon 3 Connect the mains plug again Xall 3 LEDs flash Setup mode is active 4 Set the temperature control knob to a C mark The setting value corresponds to the temperature of the table below X LEDs red green simultaneously and yellow alternately Position control knob Corresponds to reheat temperature 55 C off 60 C 40 C 65 C 4...

Page 9: ...r 30 seconds Reheating In the first menu item reheating can be enabled This function is for automatic hot water ensuring This allows you to switch off the heating system used normally to heat water Reheating is useful in non heating period If reheating is on all connected AC ELWAs which have an adjusted reheating temperature will be activated from 16 00 23 00 regardless of whether or not excess po...

Page 10: ...by Service 6x flashes X Temperature sensor fault Device must be checked by Service PLA fault displays No display Check power supply All 3 phases have failed Red LED 1x flash X One or more of the connected AC ELWAs have a fault Maintenance Hard water can cause calcification of the heater especially when the target temperatures are set to above 60 C We recommend an annual maintenance In this case re...

Page 11: ...A I Universal Interface IR Interface for Loxone Complies with the following directives and standards EN 60335 2 21 just AC ELWA and AC ELWA I EN 61000 6 2 EN 61000 6 3 EN 61000 3 2 EN 60730 2 9 just AC ELWA and AC ELWA I The above named company keeps records with confirm the compliance to the safety objectives and the essential safety requirements for inspection Vienna 20 11 2015 Dr Gerhard Rimple...

Page 12: ...AWG 16 1 5 mm Dimension BxHxT 130 x 180 x 600 mm incl heating rod Heater length 47 cm Immersions heater connection 1 Inch Weight 2 kg incl cable without package PLA Voltage 1x230 V or 3x230 V Consumption 1 W Cable cross section max 16 mm Max current 63 A Dimension BxHxT 71 x 90 x 58 mm Weight 2000 g Water protection IP20 Operating temperature range 10 C to 40 C Operating status display 3 LED s Dat...

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