Internal Layout - Bosch Worcester Greenstar HIU E Installation And Maintenance Instructions Manual

2.8

Internal layout

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Fig. 5 Example HIU KE Plus with heat meter
6 720 808 928 (2017/06)
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[1] Domestic Hot Water control valve
[2] Control unit
[3] Central heating control valve
[4] Manual air vent (district heating)
[5] Manual air vent (central heating)
[6] Return sensor NTC (district heating)
[7] Plate heat exchanger (central heating)
Differential pressure control valve (if fitted,  Table 2, Model
[8]
matrix for standard component or accessory)
[9] Flow sensor NTC (central heating)
[10] Heat meter (if fitted,  Table 2, Model matrix for standard
component or accessory)
[11] Central heating circulating pump
[12] By-pass valve (if fitted,  Table 2, Model matrix for standard
component or accessory)
[13] Drain point (central heating flow)
[14] Drain point (central heating return)
[15] Pressure relief valve (central heating)
[16] Central heating return connection
[17] Central heating flow connection
[18] District heating return connection
[19] District heating supply connection
[20] Domestic Hot Water outlet connection
[21] Cold mains inlet connection
[22] Filter and drain point (district heating)
[23] Heat meter flow sensor connection point
[24] Supply sensor NTC (district heating)
[25] Flow turbine and flow regulator
[26] Expansion vessel connection point
[27] Domestic Hot Water pressure relief valve
[28] Domestic Hot Water safety valve
[29] Domestic Hot Water outlet sensor NTC
[30] Manifold (district heating)
[31] Plate heat exchanger (Domestic Hot Water)
[32] Expansion vessel
[33] Manual air vent (Domestic Hot Water)
Appliance information
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