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Specifications

Reference
VM-20040655
Material, heat exchanger
Copper
Closed finish
No
Open and closed finish
Yes
Nominal useful output 80-60 °C
18kW
Suitable for low-calorific natural gas
Standard factory setting
Suitable for propane
Not suitable
Suitable for butane
Not suitable
Suitable for methane
Not suitable
Adjustable heating power
Yes
Ignition flame
No
Conversion kit available
No
On/off control signal
Yes
High/low control signal
No
OpenTherm control signal
No
Control signal 0-10 V
No
High/low burner regulation
No
Modulated burner control
Yes
Maximum temperature of the inlet water (operating temperature)
83°C
Minimum setback temperature
1°C
Minimum working pressure
0.3bar
Max. operating pressure
3bar
Maximum upstream gas pressure
30mbar
Minimum upstream gas pressure
20mbar
Second outlet connection
No
Faucet base
1.5l/min
Available hot water network volume at 60 °C
0l/min
Rated voltage
230V
Sanitary hot water reservoir
0l
Integrated pump switch
No
Integrated ambient conditions controller
No
Integrated expansion vessel
No
Integrated overpressure valve
No
Height
740mm
Depth
310mm
Width
418mm
Supply connection
Serrage
Nominal diameter of the supply
3/4 inch (20)
Diameter outside of the inlet pipe
22mm
Return connection
Serrage
Nominal diameter return
3/4 inch (20)
Diameter outside of the return pipe
22mm
Connection, fuel
Serrage
Nominal inner diameter fuel
1/2 inch (15)
Diameter outside of fuel pipe
15mm
Connection, air duct
Other
Nominal diameter of the air duct
0mm
Connection, flue gas discharge
Other
Nominal diameter of the duct, flue gas discharge
130mm
Cold drinking water connection
Other
Nominal diameter, cold drinking water
3/4 inch (20)
Hot water connection
Other
Nominal diameter of the hot water connection
DN 50
Energy efficiency of hot water
66%
Capacity profile
XL
Useful heat emission at nominal heat in high temperature operation (P4)
18.1kW
Useful efficiency at nominal heat in high-temperature operation (n4)
79.9%
Additional full-load electricity consumption (Elmax)
0.01kW
Heat loss in standby (Pstby)
0.15kW
Additional standby electricity consumption (Psb)
0.01kW
EAN code
3532041741071

Key features

  • Height: 740mm
  • Material, heat exchanger: Copper
  • Open and closed finish: Yes
  • Nominal useful output 80-60 °C: 18kW
  • Suitable for low-calorific natural gas: Standard factory setting

About this product

Bulex. ThemaTek. C 18/24-LC/1. Non-condensing gas wall boiler. Open boiler for heating and domestic hot water. Heating body cooled by water in copper. Universal atmospheric burner in stainless steel. Sanitary plate heat exchanger in stainless steel. Electronic ignition. Built-in high-efficiency pump: with adjustable flow. Approval B11BS. Thermostat connection ON/OFF or eBUS. Warning light. Frost protection, low water protection. Built-in expansion vessel, pressure relief valve and bypass. Supplied without filling set. ErP Ready.

Delivery and returns

Free delivery in Belgium from €65 excl. VAT

In stock · ships in 3-6 working days

14-day right of return

Free delivery in Belgium from €65 excl. VAT, otherwise €9.95. Delivered in 3-6 working days when in stock. Manufacturer warranty according to the product.

Manufacturer warranty

2 year manufacturer warranty

Minimum 2-year manufacturer warranty + Valtieri after-sales included

Secure payment

VAT invoice with every order

incl. 21% VAT · excl. 21% VAT

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