Regulus ETT-R User manual

www.regulus.eu
ETT-R Heating Element
ETT-R Heating Element
EN
Installation and Operation Manual
Heating Element with Thermostatic Head

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REGULUS - Heating Element - www.regulus.eu
1 - General Information
1.1 - Application
The electric heating element is intended for DHW heating in a hot water storage tank or for heating of heating
water in thermal stores of a heating system. The element is connected in star conguration and so it is suitable
for utilizing surpluses from single-phase and three-phase photovoltaic systems.
1.2 - Installation
Screw the electric heating element into the appropriate connection (socket) equipped with a G 6/4“ F thread.
For sealing, we recommend using sealing yarn, hemp, Teon tape or thread sealant allowing diassembly.
1.3 - Maintenance
Clean the exterior of the heating element with a soft cloth and a suitable detergent. Never use abrasive cleaners
or solvents.
If the element is used in extra hard water, it is recommended to remove sediments at least once a year. Disconnect
the element from the mains before cleaning. Then drain water from the tank and dismount the heating element.
Scratch the hard deposits on the heating rod with a plastic or wooden spatula and ush with water. Be careful
not to damage the protective nickel layer on the heating rod. Then reinstall the body according to this instruction
manual, ll the tank with water, air-bleed and pressurize it. Check the threaded connection for leaks. Finally, re-
connect the heating element to the mains.
1.4 - Disposal
IMPORTANT INFORMATION ON PROPER DISPOSAL OF E-WASTE
AS REQUIRED BY THE EC DIRECTIVE 2002/96/EC (WEEE)
Do not dispose of this product as unsorted municipal
waste. Please dispose of this product by returning it to
the point of sale or to your local municipal collection
point for recycling.
Respecting these rules will help to preserve, protect
and improve the quality of the environment, protect
human health and utilize natural resources prudently and
rationally.
The crossed out wheeled bin with marking bar, printed
ether in the Manual or on the product itself, identies that
the product must be disposed of at a recycling collection
site. WEEE Registration Number: 02771/07-ECZ

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2 - Heating Element with Thermostatic Head
2.1 - Technical description
The electric heating element consists of a nickel-plated heating rod with G 6/4“ M thread, a combined 3-phase
capillary thermostat (the operating thermostat is adjustable between 25°C and 85°C, the manual reset safety
thermostat set to 99°C xed temperature).
2.2 - Dimensions
Technical Data
Electrical wiring 1/N/PE AC 230 V
3/N/PE AC 400/230 V
IP rating IP 65
Protection class by EN 61140 ed. 2 I
Body type electric, resistive, nickel-plated, with thermostatic head
Adjustable thermostat adjustable from 25 to 85 °C
Safety thermostat
Safety thermostat reset manual, after temperature drop by 10 K min.
Max. current at thermostat contacts 20 A
Cable gland Pg 13
Connection thread G 6/4" outside
Connection to mains
in supply –for recommended cross-sections pls consult the table below
135 L
90
90
60
Pg 13
Element type Nominal output Element length L
[mm]
Non-heating
end length LN [mm]
Code
ETT-R – 2.0 2.0 kW 295 100 19695
ETT-R – 3.0 3.0 kW 295 100 19699
ETT-R – 4.5 4.5 kW 360 100 19691
ETT-R – 6.0 6.0 kW 485 100 19277
ETT-R – 7.5 7.5 kW 575 100 19697
ETT-R – 9.0 9.0 kW 670 100 19693
ETT-R – 12.0 12.0 kW 805 100 20168

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2.5 - Commissioning, Operation and Possible Faults
WARNING!
THE OUTGOING HOT WATER SHALL NOT BE LEAD THROUGH COMMON PLASTIC
PIPES. THE PIPING SHALL BE RESISTANT TO TEMPERATURE OF 100 °C MIN.
IF PLAIN COMMON PLASTIC PIPING IS USED, ITS SERVICE LIFE IS SIGNIFICANTLY
REDUCED UNDER TEMPERATURES OVER 60 °C. WHEN COMBINED WITH
IMPROPER PIPE FIXING THAT RESTRICTS DILATATION OR EVEN MAKES IT
IMPOSSIBLE, THE PIPE SERVICE LIFE MIGHT BE JUST SEVERAL HOURS!
Prior to commissioning, please make sure the water in direct contact with the heating element does not ex-
ceed the values given in the table below. The manufacturer bears no responsibility for defects (e.g. limescale
deposits on the heating element) caused by adverse operating conditions.
Table of limit values for total dissolved solids in hot water
2.3 - Connection to the mains
The electric heating element shall be wired to a terminal box or electrical switchboard, 3/N/PE AC 400/230V,
xed wiring. The installation shall meet valid rules and standards and shall be done by an authorized person
only.
2.4 - Wiring Diagram
t 99 ºCt 25–85 ºC
Recommended wiring to the mains*
Element type wiring 3 x 230 V
equal phase load
wiring 3 x 230 V
unequal phase load
(e.g. a PV system)
wiring 1 x 230 V
ETT-R – 2.0 5G x 1 5G x 1.5 3G x 1.5
ETT-R – 3.0 5G x 1 5G x 2.5 3G x 2.5
ETT-R – 4.5 5G x 1.5 5G x 2.5 (to 3 m) 3G x 2.5 (to 3 m)
ETT-R – 6.0 5G x 1.5 7 x 1.5 (to 3 m)** 3G x 4 (to 3 m)
ETT-R – 9.0 5G x 2.5 7 x 2.5 (to 3 m)** not recommended
ETT-R – 12.0 5G x 2.5 (to 3 m) 7 x 2.5 (to 3 m)** not recommended
* For cables run in the air.
** Separate neutral conductor for each phase.
It is recommended to use cables with silicone insulation.
Hot water in direct contact with the heating element shall not exceed the following values:
Total Dissolved Solids (TDS) pH Calcium Chlorides Mg Na Fe
600 mg/litre 6.5–9.5 40 mg/litre 100 mg/litre 20 mg/litre 200 mg/litre 0.2 mg/litre

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2.5.1 - DHW heating in a hot water storage tank
In order to heat water in the hot water storage tank, open the cold water inlet, ll the tank with water and airbleed it by
opening the hot-water tap. Set the thermostat knob to the desired temperature.
It is recommended to set the thermostat knob to 60 °C. This temperature guarantees the best operation of the heating
element and at the same time, it offers:
- protection against Legionella
- cost reduction
- slower deposit formation
2.5.2 - Heating water for space heating in a thermal store
Fill the heating system with heat transfer uid, air-bleed it and pressurize to the working pressure. Set the thermostat
knob to the desired temperature.
2.5.3 - Possible faults
When the safety temperature is reached, the safety thermostat disconnects the heating element from the electricity
supply. The safety thermostat features no automatic reset. After the tank temperature drops by min. 10 K pry off the
white plastic cap (see picture) with a screwdriver, press the button and click the cap back. Repeated occurrence of
this condition indicates a failure of the heating element. In such a case, disconnect the heating element from mains
and call a service technician.
If the heating element shows signs of another defect, disconnect it from the mains immediately and call a service
provider.

Heating Element with Thermostatic Head
WARRANTY CERTIFICATE
Type: .......................................................................................
Serial number: .......................................................................
Shop: .......................................................... Purchase date: ...............................
1. The warranty period is 24 months from the date of purchase.
2. The product will be installed and commissioned by a competent company or a person
trained by the manufacturer.
3. When claiming warranty, this Warranty Certicate must be submitted together with the
purchase receipt.
4. The warranty is valid only when the technical conditions set by the Manufacturer,
installation manual and instructions in the documentation and on the product itself are
maintained.
5. The warranty does not cover defects caused by external conditions or improper opera-
tion conditions, defects caused by usual wear and tear, further when the product is not
used in compliance with its purpose and when the defect was caused by mechanical
damage, improper handling, tampering by a third person, improper installation, improper
stocking, natural disaster etc.
COMMISSIONING
Company: …………………....................……………..
Date: ……………….................................……..
Rubber stamp print and signature of the installer:
WARRANTY CONDITIONS
©2023 We reserve the right to errors, changes and improvements without prior notice.
REGULUS spol. s r.o.
E-mail: E-mail: [email protected]
Web: www.regulus.eu
v1.0-06/2023