CTC Union EcoPart 400 230V 1N~, Руководство по установке и обслуживанию

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CTC EcoPart 400
General information
Valves
To facilitate servicing of the cooling unit, shut-off valves must be fitted to both
the incoming and outgoing connections. Fit bifurcated valves so that you can fill
and bleed the collector circuit later on.
Bleeding
The collector circuit must not contain any air. Even the smallest amount of air
can jeopardise the heat pump's operation. See the section Refilling and venting
below.
Insulation against condensation
All pipes in the brine system must be insulated against condensation to prevent
the possibility of severe build-up of ice and condensation.
Refilling and venting
Mix water and antifreeze solution in an open vessel. Connect hoses to the shut-
off valves (98a and 98b) as shown in the figure. Note! The hoses must have a
minimum diameter of 3/4”. Connect a powerful external pump (101) for refilling
and bleeding. Then reset the three-way valve (100) and open the valves (98a
and 98b) so that the brine passes through the mixing container (102). Also make
sure that the valve (98d) is open.
For start up of the brine pump, see the relevant manual for the EcoPart’s
controller.
Allow the brine to circulate in the system for a long period of time until it is
completely free of air. There can still be air in the system, even though no
air accompanies the liquid out. Reset the three-way valve (100) so that any
remaining air can come out.
Bleed the level vessel (96) by loosening the plug on top of the level tank.
Now close the valve (98a) while the filling pump continues to run. The filling
pump (101) now pressurises the system. Also close the valve (98b) and shut off
the filling pump.
If the level in the level vessel is too low, close the valves (98c and 98d). Unscrew
the plug and fill the vessel to around 2/3 full. Screw the plug back in and open
the valves (98c and 98d).
Brine pump, standard
The brine pump has three speeds. A different speed can be set depending on
the length of the brine hose being used. For example, the hose used for heat
extracted from a horizontal ground loop is usually longer than for heat extracted
from a borehole, which can mean a greater need for a higher speed. The brine
pump's speed is set so that the difference in temperature between brine in and
brine out is approx.: 3 ºC.
Brine pump - low energy pump (LEP)
The brine pump can be set to two different control settings, pressure-regulated
speed or constant speed.
As the brine system has a fixed pressure drop, it must generally be set to the
position for constant speed; see the illustration for how this is done.
To obtain good system performance, the brine pump speed needs to be
adjusted for every single installation. Set the red button to setting option 2 and
adjust so that a 2–4 degree temperature difference is obtained between the
incoming and outgoing brine.
Fig. 1
Fig. 2