Worcester 7735600658, Installation And Maintenance Instructions Manual

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Appendix
Greenstar – 6721852556 (2022/11) 28
Table 32 Modulating speed characteristics
The head (pressure) is reduced at falling heat demand and increased at
rising heat demand.
13.2 Tech data
Table 33 Heat interface unit specifications
Table 34 Measured temperatures and volumetric flow rates
Table 35 Heat meter integrator technical data
Temperature Sensor
Table 36 Primary circuit NTC central heating flow and return
temperature sensor
Setting Maximum head (nominal) Maximum P1 (nominal)
Curve 1 4 m 25 W
Curve 2 5 m 33 W
Curve 3 6 m 39 W
HIU (...) HIU K (...)
Weight excluding packaging kg 31 33
Weight including packaging kg 34 36
Minimum inlet pressure to achieve
nominal DHW flow rate bar 1.5 2.0
DHW output (50°C @ 40 K rise) kW 41.8 58.6
DHW output (90°C primary, 60°C DHW) kW 52,3 73,3
Heating output kW 1 - 15
Maximum flow temperature of primary
circuit °C 70
Maximum flow temperature of heating
circuit °C 70
Maximum DHW temperature °C 60
Maximum operating pressure bar 10
pH value range, approx. (heating) 6 – 9.5
Maximum primary differential pressure
(with internal DPCV) bar 4 (without internal
DPCV: 0,8)
Maximum DHW volumetric flow rate L/min 15 21
Maximum volumetric flow rate of primary
circuit l/s 0.35 0.38
Max. ambient temperature °C 35
Expansion vessel l 5
Expansion vessel charge bar 0.75
electric
Electrical power supply voltage AC V 230
Frequency Hz 50
Maximum power consumption W 41.3
Standby power consumption W 3.1
Appliance protection rating IP X4D
Primary circuit
65 °C
1)
1) DHW temperature 40°C with 30 K increase
70 °C
2)
2) DHW temperature 45°C with 35 K increase
80 °C
3)
3) DHW temperature 50°C with 40 K increase
HIU (...)
Potable Hot Water output kW 31.3 36.6 41.8
Volumetric flow rate of primary
circuit l/s 0.17 0.18 0.17
Primary circuit return temperature °C 19.3 21.9 22.3
Primary circuit pressure loss
without heat meter kPa 14 16 15
Primary circuit pressure loss with
heat meter kPa 20.5 24 21
HIU E (...)
Potable Hot Water output kW 31.3 36.6 41.8
Volumetric flow rate of primary
circuit l/s 0.17 0.18 0.17
Primary circuit return temperature °C 19.3 21.9 22.3
Primary circuit pressure loss
without heat meter kPa 22 26 22
Primary circuit pressure loss with
heat meter kPa 28 33 30,5
HIU KE (...)
Potable Hot Water output kW 44.0 51.3 58.6
Volumetric flow rate of primary
circuit l/s 0.23 0.25 0.24
Primary circuit return temperature °C 18.6 20.8 21.1
Primary circuit pressure loss
without heat meter kPa 37.4 45.1 41.3
Primary circuit pressure loss with
heat meter kPa 51 61.5 56.4
Integrator
Temperature Sensor
Temperature sensors PT500
Diameter Ø 5.2 mm
Cable length 1.5 m
Temperature range 5...130 °C
Starting temperature differential

0.125 K
Flow measurement cycle with mains supply 1/8 s; with D-cell
battery: 1 s
Permissible temperature
Operation (<35 °C has a positive effect on lifetime) 5...55 °C
Storage (>35 °C max. 4 weeks) -25...60 °C
Min. temperature difference

min 3 K
Max. temperature difference

max 177K
Resistance

Temperature
°C Resistance

Temperature
°C
29529 0 8186 30
18787 10 5586 40
12257 20 3889 50