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Specifications

Reference
VM-20054232
Material, heat exchanger
Stainless steel
Closed finish
Yes
Nominal useful output 80-60 °C
24.5kW
Suitable for low-calorific natural gas
Not suitable
Suitable for propane
Standard factory setting
Suitable for butane
Not suitable
Suitable for methane
Not suitable
Adjustable heating power
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
Minimum setback temperature
1°C
Minimum working pressure
0.3bar
Max. operating pressure
3bar
Energy saver included
No
Maximum upstream gas pressure
30mbar
Minimum upstream gas pressure
20mbar
Second outlet connection
No
Nominal power low value, sanitary water
30.6kW
Nominal power high value, sanitary water
33.966kW
Faucet base
1.5l/min
Integrated distribution/filling valve
No
Integrated pump switch
No
Built-in manometer
No
Integrated ambient conditions controller
No
Integrated expansion vessel
No
Integrated overpressure valve
No
Built-in inlet combination
No
Height
740mm
Depth
300mm
Width
418mm
Supply connection
Serrage
Diameter outside of the inlet pipe
22mm
Return connection
Serrage
Diameter outside of the return pipe
22mm
Connection, fuel
Serrage
Diameter outside of fuel pipe
15mm
Condensate connection
Flexible
Diameter outside of condensate pipe
17mm
SEER (Seasonal Energy Efficiency Ratio) in standard conditions
93
Energy efficiency of hot water
84%
Capacity profile
XL
Useful heat emission at nominal heat in high temperature operation (P4)
24.6kW
Useful efficiency at nominal heat in high-temperature operation (n4)
88%
Additional full-load electricity consumption (Elmax)
0.035kW
Heat loss in standby (Pstby)
0.042kW
Additional standby electricity consumption (Psb)
0.003kW
Gas label HR
No
Gaskeur NZ
No
EAN code
3532041775786

Key features

  • Height: 740mm
  • Material, heat exchanger: Stainless steel
  • Closed finish: Yes
  • Nominal useful output 80-60 °C: 24.5kW
  • Suitable for low-calorific natural gas: Not suitable

About this product

Bulex. Thema Condens. 25/30 A. Condensing gas wall-mounted boiler. For propane. Heating and domestic hot water. DHW technology: AquaFast. Heating body, burner and plate heat exchanger in stainless steel. Individual and collective flues. Thermostat connection ON/OFF or eBUS, OpenTherm optional. Large LCD interface. Expansion vessel 8 litres, bypass and pressure relief valve 3 bar. Built-in three-way valve. Built-in weather-compensated control, outdoor sensor optional. Built-in modulating pump control according to temperature. Not supplied with the appliance: connection pipes, mounting plate, connection kit, filling kit, non-return valve and vertical outlet. 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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