Thermo Condens® WTC-GB 470 / 620 floor-standing gas condensing boilers 59–620 kW, cascade up to 2480 kW
Country: Germany · Model: WTC-GB 470 / 620
Floor-standing gas condensing boilers WTC-GB 470-A of 59–471 kW and WTC-GB 620-A of 62–620 kW at 50/30 °C, up to 2480 kW in a cascade. PLN premix burner, modulation 1:8 and 1:10. Intended for heat supply of large residential and administrative buildings.
- Output (50/30 °C)
- WTC-GB 470-A: 59–471 kW; WTC-GB 620-A: 62–620 kW
- Cascade
- up to 2480 kW
- Fuel
- natural gas E/H, LL; liquefied gas B/P
- Modulation
- 1:8 (470 kW), 1:10 (620 kW)
Technical specifications
| Output (50/30 °C) | WTC-GB 470-A: 59–471 kW; WTC-GB 620-A: 62–620 kW |
|---|---|
| Cascade | up to 2480 kW |
| Fuel | natural gas E/H, LL; liquefied gas B/P |
| Modulation | 1:8 (470 kW), 1:10 (620 kW) |
| Burner | PLN premix (premixing, surface combustion); IE5 class synchronous motor |
| Heat exchanger | cast Al/Si silumin, thermal conductivity 7 times higher than stainless steel |
| Max. operating pressure | 6 bar; safety valve 3 or 6 bar |
| Flue gas temperature | max. 68 °C (80/60 °C) |
| Noise | 64 dB |
| Dimensions (W×H×D) | 680 × 1531 × 1592 mm |
| Weight | 370 kg (470) / 430 kg (620); with burner ~450 kg |
| Control | up to 4 circuits as standard, expansion modules; WEM portal |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The boilers run on natural gas of groups E/H and LL, and a version for liquefied gas B/P is available. The heat exchanger is cast from Al/Si silumin, and its thermal conductivity is seven times higher than that of stainless steel. The surface combustion burner with an IE5 class synchronous motor reduces emissions. The flue gas temperature is up to 68 °C at 80/60 °C, the sound pressure is 64 dB, the maximum operating pressure is 6 bar, and the safety valve is 3 or 6 bar. The width is 680 mm, height 1531 mm, depth 1592 mm, weight 370 kg (470) and 430 kg (620), and with the burner about 450 kg. A second temperature limiter and a second pressure limiter remove the need for an expansion vessel-separator. The standard controller manages four circuits, for example three heating circuits and one DHW boiler, and remote access is provided by the WEM portal. The combustion air passes through a two-stage prefilter.
How to choose
The model is chosen by the heat demand of the building. WTC-GB 470-A covers 59–471 kW, WTC-GB 620-A 62–620 kW, and larger sites are assembled in a cascade of up to 2480 kW. Modulation 1:8 for the 470 and 1:10 for the 620 means that the 620 cycles less often at low load. For smaller buildings look at WTC-GB 210–300 up to 276 kW or WTC-GW / WTC-GB 45–150 up to 146 kW.
Request a price and lead time
Thermo Condens® WTC-GB 470 / 620 floor-standing gas condensing boilers 59–620 kW, cascade up to 2480 kW. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the output of WTC-GB 470 and 620 boilers?
WTC-GB 470-A gives 59–471 kW, WTC-GB 620-A 62–620 kW at 50/30 °C. In a cascade the installation reaches 2480 kW.
What fuel do the boilers run on?
On natural gas of groups E/H and LL, and also in a version for liquefied gas B/P.
What are the dimensions and weight of the boiler?
Width 680 mm, height 1531 mm, depth 1592 mm. Weight is 370 kg for the 470 and 430 kg for the 620, and with the burner about 450 kg.
Is an expansion vessel-separator needed?
No, the need for it is removed by a second temperature limiter on the heat exchanger and a second maximum pressure limiter. The 3 or 6 bar safety valve is part of the safety kit.
REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.