Floor two-circuit gas boiler GTD/GPD
Compactness
Boilers are small in size with excellent characteristics, the use of stainless steel allows prolonging boiler life for a very long period, while improving its thermal characteristics, efficiency.
Simplicity and convenience
Boiler design is simple, but it provides efficient operation and easy control. Through the control panel you can set the operating modes for the timer, the water temperature in heating system or air temperature of the room. “No” function saves fuel while preventing the heating system from freezing.
Security:
Combustion Control Unit
Automatically stops boiler’s operation, if for some reason there is no fire, no fuel (gas, liquid fuel)
Protection unit in case of power failure
In the event of power failure in network, the boiler automatically stops operating, when the power supply resumes, the boiler will also automatically return to the operating state
Overheating protection unit
If there is no water in the heating system, or if the control panel breaks down during the operation of the boiler, the temperature rises sharply. This protects against overheating, protecting the boiler from destruction
Protection against freezing
In cold period of time, boiler independently turns on the circulation pump and the burner to avoid freezing of the heating system.
Fan Protection Unit
When fan breaks down, pressure in chimney leaks, chimney clogs up, boiler automatically stops.
Protection from low water level
When water level in the boiler drops below the permissible value, the boiler stops working
Material of heat exchanger:
GTD Series – Stainless Steel
GPD series – refractory steel
Technical Information – Navien GTD Series
Model |
535 GTD | 735 GTD | ||
Heating square | m2 | 580 | 810 | |
Heating capacity | kW | 58,1 | 81,3 | |
Hot water pressure | bar | max – 9,8 | ||
Capacity of hot water | dT=25°C | l/min | 33 | 46 |
dT=40°C | l/min | 21 | 29 | |
Maximum temperature of heating | °С | 80 | ||
Maximum pressure in system | kg/sm2 | 3,5 | ||
Gas pressure | mBar | 15-27 | ||
Maximum gas consumption | m3/h | 5,8 | 8 | |
Efficiency | % | 89 | 88,6 | |
Power supply | V/Hz | 220/50 | ||
Pipes’ diameter | inlet/outlet heating | mm | 40 | |
HWT inlet/outlet | mm | 20 | ||
gas inlet | mm | 15 | ||
chimney | mm | 148 | ||
Sizes | W*D*H | 547*850*1032 | 547*838*1240 | |
Weight | kg | 160 | 193 |
Technical information – Navien of GPD series
Model
|
1035 GPD | 1535 GPD | 2035 GPD | ||
Heating square | m2 | 1160 | 1740 | 2320 | |
Heating capacity | kW | 116 | 174.4 | 232.6 | |
Hot water pressure | bar | макс. – 9.8 | |||
Hot water capacity | dT=25°C | l/min | 63 | 81 | 130 |
dT=40°C | l/min | 42 | 54 | 87.8 | |
Maximum heating temperature | °С | 80 | |||
Maximum system pressure | kg/sm2 | 3.5 | |||
Gas pressure | mBar | 10-27 | |||
Maximum gas consumption | m3/h (kg/h) | 11.8 | 17 | 24 | |
Efficiency | % | 81.3 | 85.5 | 84.6 | |
Power supply | V/Hz | 220/50 | |||
Pipes diameter | inlet/outlet heating | mm | 65 | 80 | |
inlet/outlet | mm | 20 | |||
gas inlet | mm | 20 | 25 | 32 | |
chimney | mm | 200 | |||
Sizes | W*D*H | 769*1073*1411 | 796*1073*1464 | 796*1165*1588 | |
Weight | kg | 290 | 390 | 470 |