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Commercial Low-NOx Condensing Gas Storage Water Heater PRO series

New condensing design with thermal efficiency up to 107%

Meet the hot water needs of hotels, apartments, clubs, and industrial facilities.

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Product Description

Indoor Type

Model RSTQ73-379L RSTQ99-379L
Storage capacity (L) 379 379
Thermal efficiency ≥107% ≥107%
Rated heat input kcal/h 62440 85646
kW 73 99
Gas consumption (m³/h) 7.3 9.9
Electric power (W) 280 280
Rated working pressure (Mpa) 1.0 1.0
Temperature setting range (°C) 30-75 30-75
Relative hot water output(L/h) △t=25℃ 2678 3673
△t=35℃ 1913 2623
△t=55℃ 1217 1670
Inlet/Outlet pipe diameter DN50 DN50
Gas connection pipe diameter DN20 DN20
Safety valve diameter DN25 DN25
Drain valve diameter DN50 DN50
Air inlet diameter Φ110 Φ110
Flue outlet diameter Φ110 Φ110
Product net weight (kg) 355 355

 

Model Total height A (mm) Outlet height B(mm) Inlet height C(mm) Furnace body diameter D(mm) Maximum depth E(mm)
RSTQ73-379L 2000 1760 430 710 790
RSTQ99-379L 2000 1760 430 710 790

Outdoor Type

Model RSTW73-379L RSTW99-379L RSTW99-495L
Storage capacity (L) 379 379 495
Thermal efficiency ≥107% ≥107% ≥107%
Rated heat input kcal/h 62440 85646 85646
kW 73 99 99
Gas consumption (m³/h) 7.3 9.9 9.9
Electric power (W) 280 280 280
Rated working pressure (Mpa) 1.0 1.0 1.0
Temperature setting range (°C) 30-75 30-75 30-75
Relative hot water output(L/h) △t=25℃ 2678 3673 3673
△t=35℃ 1913 2623 2623
△t=55℃ 1217 1670 1670
Inlet/Outlet pipe diameter DN50 DN50 DN50
Gas connection pipe diameter DN20 DN20 DN20
Safety valve diameter DN25 DN25 DN25
Drain valve diameter DN50 DN50 DN50
Air inlet diameter Φ110 Φ110 Φ110
Flue outlet diameter Φ110 Φ110 Φ110
Product net weight (kg) 355 355 375

 

Model Total height A (mm) Outlet height B(mm) Inlet height C(mm) Furnace body diameter D(mm) Maximum depth E(mm)
RSTW73-379L 2000 1760 430 710 790
RSTW99-379L 2000 1760 430 710 790
RSTW99-495L 2100 1760 430 710 790

High efficiency and energy saving

Top-mounted PRE-MIX fully premixed combustion significantly enhances combustion efficiency; TRIPLE-HEAT three-pass heat exchanger achieves thermal efficiency up to 107%.

Safe and reliable

Electric spark ignition with low-load startup; fourfold safety protection including thermostat, high-temperature limit, overheat protection, and TP valve ensures safe operation. Pressure-bearing capacity up to 1.1 MPa allows stable performance under fluctuating water supply pressures.

Intelligent control

LCD display panel for real-time monitoring of operating status and fault alerts. Wi-Fi connectivity enables remote monitoring and configuration of operating parameters via mobile devices.

Low NOx and environmentally friendly

NOx emissions are lower than 30 mg/m³, meeting the most stringent emission standards. The built-in condensing neutralizer reduces condensate acidity for safe discharge with no additional cost.

Easy installation

Suitable for indoor/outdoor installation with forced or balanced smoke exhaust options. Multiple inlet/outlet configurations support various flexible flue layouts, making installation or replacement of existing equipment easy.