Navien NCB-24LSWE, Руководство по обслуживанию

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NCB Service Manual 17
Version 1.0
3. Technical Data
3.1 General Specifications
The table below lists the boiler’s general specifications.
Specification Unit
NCB-
24LSWE
NCB-
28LSWE
NCB-
34LSWE
NCB-
40LSWE
Heating capacity (max/min)
kW 20.0/4.2 24.0/4.2 29.0/5.1 34.0/4.0
DHW heat capacity (max/min)
kW 24.0/4.2 28.0/4.2 34.0/5.1 40.0/4.0
Heating output (max/min) at 80/60°C
kW 19.5/4.0 23.3/4.2 28.4/4.9 33.2/3.8
DHW output (max/min)
kW 20.0/4.0 24.0/4.0 34.0/5.0 40.0/4.0
Condensing heating output (max/min) at 50/30°C
kW 21.4/4.5 25.5/4.5 31.1/5.5 36.2/4.3
Full output load efficiency (max/min), at 80/60°C
% 97.7/96.4 97.2/96.4 97.9/96.4 97.5/95.8
Full output load efficiency (max/min), at 50/30°C
(condensation)
% 106.9/107.8 106.3/107.8 107.3/107.9 106.6/107.9
Partial load (30%) efficiency, at 30°C return
temperature
% 108.3 108.3 108.6 108.8
Heat Loss via the casing with burner switched on
% 0.1 0.1 0.1 0.1
Heat Loss via the chimney with burner switched on
% 1.6 1.8 1.5 1.9
Seasonal efficiency rate (SEDBUK rating)
- A
NOx class
- 5
Category
- II2H3P
Type
- Heating and instantaneous hot water production
Heating output adjustment
- Adjustable over entire max/min output range
Type of heating installation
- Closed circuit
Maximum heating pressure
bar 2.5
Maximum heating temperature
°C 90
Adjustable heating temperature range
°C 40-90
Expansion vessel volume
l 6. 0
Expansion vessel pre-load
bar 1
Minimum DHW pressure
bar 1.0 1.2 1.4 1.4
Minimum DHW flow
l/min 2.0
Maximum DHW pressure
bar 10
Adjustable DHW temperature range
°C 30–65
Specific flow (ΔT=25°C)
l/min 13.8 16.1 19.5 22.9
Specific flow (ΔT=30°C)
l/min 11.5 13.4 16.2 19.1