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TABLE 2. TECHNICAL DATA
HR28C
Maximum weight lift
40kg
Gas supply
2H - G20 - 20mbar
Gas connection
15mm copper
Injector size
3.65mm
Domestic hot water flow and return
15mm copper
Heating flow and return
22mm copper
Safety valve discharge
15mm copper
Flue terminal diameter
100mm (4”)
Average flue temperature-mass flow rate DHW
30°C 11g/s
Average flue temperature-mass flow rate CH
63°C 11g/s
Condense drain
21.5mm plastic overflow pipe
Maximum heating system water content using fitted expansion vessel
73lts
Electrical supply
230V ~ 50Hz
Electrical rating
100W
External fuse rating
3A
Expansion vessel capacity
8 litres
Expansion vessel initial charge pressure
1.0 bar
Heating system minimum pressure
0.5 bar
DHW maximum inlet pressure
6 bar
Minimum inlet pressure for appliance to operate
0.2 bar
Maximum flow rate at 35°C
12.3 l/m
Minimum domestic hot water flow rate
2.0 l/m
Maximum flow temperature
60°C
DHW specific rate
14.4 l/min
Water content CH
1.2 litres
Water content DHW
1.0 litres
Ball valves are fitted in water and gas connections
For larger systems use an additional expansion vessel
* Required for maximum flow rate. Boiler operates down to 2 l/min DHW delivery
** In areas of low water pressure the DHW restrictor can be removed
