Daikin GCU compact Series, Installation And Operating Instructions Manual

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12 Technical data
Installation and operating instructions
67
Gas Combi Unit
Floor-standing gas condensing boiler with integrated heat storage
008.1543899_02 – 04/2019 – EN
12 Technical data
12.1 Basic data
12.1.1 GCU compact 3xx
Type (1)
(22)
GCU compact
Individual Unit 315 / 315 Biv 320 / 320 Biv
Permitted ambient temperature °C 1 - 40
Total storage capacity litres 294
Net weight (11)
(22)
kg 76 / 78
Total filled weight kg 370 / 372
Dimensions (W × D × H) cm 59.5 × 61.5 × 189.5
Maximum permissible storage water temperature °C 85
Standby heating power kWh/24 h 1.5
Drinking water heat exchanger (stainless steel)
Water capacity heat exchanger litres 18.6
Heat exchanger surface area m
2
3.8
Max. operating pressure for potable water P
MW
(14)
(22)
bar 6
Storage tank charging heat exchanger (stainless steel)
Water capacity heat exchanger litres 8.7
Heat exchanger surface area m
2
1.8
Pressurised solar heat exchanger (stainless steel)
Water capacity heat exchanger litres — / 3.9
Heat exchanger surface area m
2
— / 0.7
Pipe connections
Cold and hot water inches 1" outer thread
Heating feed and return flow inches 1" outer thread
Thermal performance data (sanitary)
Output characteristic figure N
L
in accordance with DIN 4708
(23)
2.0 2.1
D value (specific water flow) conforms to EN 13203
(24)
(15)
(22)
l/min 22 23
Continuous output Q
D
according to DIN 4708 kW 15 20
Max. draw-off rate for a period of 10 min at
(T
KW
= 10 °C / T
WW
= 40 °C / T
SP
= 60 °C)
litres 19 20
Hot water quantity without reheating with up to 15 l/min draw-off
rate
(T
KW
= 10 °C / T
WW
= 40 °C / T
SP
= 60 °C)
litres 200
Hot water quantity with reheating at nominal output and 15 l/min
at draw-off rate
(T
KW
= 10 °C / T
WW
= 40 °C / T
SP
= 60 °C)
litres 300 350
Short-term water quantity in 10 min
(25)
litres 190 200
Electrical system
Maximum electrical power consumption
(without/with heating circulation pump) (9)
(22)
W 36 / 76 38 / 98
Max. electric power consumption in "Standby" operating mode W 3.1
Voltage supply (8)
(22)
~230 V, 50 Hz
Degree of protection (10)
(22)
IP X0B
Tab. 12-1 Technical data for GCU compact 3xx
(22)
Value in brackets corresponds to item number in Fig. 12-1
(23)
Reheating with nominal output, inflow temp. T
V
= 80 °C, starting storage tank temp. T
SP
= 65 °C, cold water temp.
T
KW
= 10 °C, hot water temp. T
WW
= 45 °C.
(24)
The spec. water flow acc. to EN 13203 is the domestic water flow at an average temperature increase of 30 K, which the
GCU compact can supply if two draw-off procedures each of 10 minutes duration are performed one after the other, assum-
ing a charging temp. of 65 °C. A delay of 20 minutes between the two draw-off procedures is usually assumed. The
GCU compact achieves this value with even shorter waiting periods.
(25)
Reheating with nominal output, starting storage tank temp. T
SP
= 60 °C, cold water temp. T
KW
= 10 °C, hot water temp.
T
WW
= 40 °C.