CTC Union EcoZenith i350 H, Руководство по установке и обслуживанию

Страница: 52 / 116

52 CTC EcoZenith i350
Required
power [kW] New house [m 2 ]
42.5 W/m2
Older house
[m
2
] 55 W/m
2
delta 5 degrees. Example:
loor heating circuit 40/35
[l/s] delta 10 degrees.
Example: radiator
system 55/45 [l/s]
4 94 73 0.19 0.10
5 118 91 0.24 0.12
6 141 109 0.29 0.14
7 165 128 0.33 0.17
8 188 145 0.38 0.19
9 218 164 0.43 0.22
10 235 182 0.48 – VT 80 required 0.24
11 259 200 0.53 – VT 80 required 0.26
12 282 218
0.57 – VT 80 required
0.29
13 306 236 0.62 – VT 80 required 0.31
14 329 255 0.67 – VT 80 required 0.33
15 353 273 0.72 – VT 80 required 0.36
16 376 291 0.77 – VT 80 required 0.38
17 400 309 0.81 – VT 80 required 0.41
18 424 327 0.86 – VT 80 required 0.43
19 447 345 0.91 – VT 80 required 0.45
20 471 364 0.96 – VT 80 required 0.48 – VT 80 required
10. System adjustments
10.1 Adjust circulation pump
The charge pump/circulation pump speed for the radiator system is set depending on
the system type. Make sure the flow through the heat pump is sufficient.
The circulation pump is factory-set to 90%, and adjustable to [25–100%]. This can be
changed in the display under Installer/Settings/Heating circuit/Charge pump %.
• If the products do not work effectively, or if the heat in the radiator system
is uneven because the flow is too low, the capacity of the charge pump can
be increased. If the flow is too low, the heat in the radiators and floor heating
circuits will become uneven. This requires a higher primary flow temperature to
compensate, which will make heat pump operation more expensive.
• If there is noise in the radiator system caused by the flow being too high, the
capacity of the charge pump can be reduced. As well as noise, unnecessarily
high flow means more energy consumption/cost.
For CTC EcoZenith i350, the radiator system’s flow must go through the heat pump;
the pump needs to be set to produce the minimum flow for the heat pump and the
building.
Step 1 Calculate required low
Read the flow required by the heating circuit from the table below. The following
approximations can be used as a simple rule of thumb: 40–45 W/m
2
for a newer house
and 50–60 W/m 2 for an older house.
Power requirement for this building:
[kW]
This building requires:
[l/s]
Available pressure remaining according to pressure differential
diagram in section 9.4 [kPa]