Potterton Derwent Compact Plus - Page 4

SECTION 1 POTTERTON COMMERCIAL PRODUCTS DIVISION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
PAGE 2
DERWENT COMPACT PLUS – CONDENSING
Table 3 – Technical Data
Model: Derwent Compact Plus Condensing 4/55 6/90 8/125
Number of Sections 4 6 8
CE Certification Number 0063B03166
Gas Category I2H
Nominal Heat Input 100% kW 54 90 125
Nominal Heat Input 80% kW 43.2 72 100
Nominal Heat Output 100% load 60/80°C kW 51.4 85.9 118.6
Nominal Heat Output 100% load 30/50°C kW 55.5 92.5 127.9
Nominal Heat Output 80% load 60/80°C kW 41 69 95
Nominal Heat Output 80% load 30/50°C kW 45.3 75.7 104.4
Fuel Consumption 100% load (NG) m³/hr 5.7 9.5 13.2
Fuel Consumption 80% load (NG) m³/hr 4.6 7.6 10.6
Nominal Gas Inlet Pressure (NG) mbar 20
Burner Manifold Pressure 100% (NG) mbar 16.5
Burner Manifold Pressure 80% (NG) mbar 10.5
Burner Injector Size (NG) mm 3.2
Maximum Design Pressure bar 3
Minimum Operating Pressure bar 0.5 (0.1 available on request)
CO2 NG 100% load % 7.5 to 8.5 6.5 to 7.5 7.5 to 8.5
CO2 NG 80% load % 6.5 to 7.5 6.5 to 7.5 6.5 to 7.5
Nominal Flue Connection Size Ømm 180 200 250
Flue Gas Volume m³/hr 95 175 235
Flue Draught Requirements mm 0-5
Flue Gas Temperature 60/80°C (100%) °C 63 73 80
Flue Gas Temperature 30/50°C (100%) °C 45 57 65
High Level Natural Ventilation to BS6644 cm² 270 337.5 416.25
Low Level Natural Ventilation to BS6644 cm² 540 675 832.5
Mechanical Inlet to BS6644 m³/sec 0.059 0.099 1.375
Water Flow Rate at 11°C ∆T at 100%
lit/sec 1.21 2.01 2.78
Min Water Flow Rate at 20°C ∆T at 100%
lit/sec 0.66 1.11 1.53
Hydraulic Resistance at 11°C ∆T
kpa 30.6 48.97 66.32
Cold Feed Size to BS6644 or BS5440
Minimum Bore
mm 19 25
Safety Valve Size to BSS6644 or BS5440
Minimum Bore
mm 25 32
Safety Valve Size to BS6644 or BS5440
Nominal Size
mm 19
Maximum Flow Temperature °C 90
Minimum Return Temperature °C 30
Air Pressure Switch 100% Pa 50-64 400-427 400-427
Air Pressure Switch 80% Pa 20-34 150-174 150-174
Dry Weight Kg 252 345 437
Water Content Lit 28.3 39 54.3
Power Requirements 230V 50Hz 1Ph – Isolator and 6.3A Fuse
Required