Worcester Greenstore 6kW, Instruction Manual, Page: 35 / 36

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Preparations before connection
Compact collector
The following equipment is required for the collector installation:
Side installation on the left-hand side
Proceed as follows to switch the heat transfer fluid pipes from top
installation to side installation on the left:
1. Switch the heat pump’s right- and left-hand side covers.
2. Remove the blanking plates (figure 1).
3. Dismantle the sensor and both heat transfer fluid pipes. The pipes
run to the top of the top plate. Heat transfer fluid in is connected by a
connector on top of the HTF pump. Heat transfer fluid out is
connected to the bottom of the heat exchanger (figure 2).
Note: The sensor fitted to heat transfer fluid out must be
dismantled first (figure 2).
4. Remove the Armaflex insulation from the heat transfer fluid pipes so
they are completely clean (figure 3).
5. Cut the heat transfer fluid pipe in as in figure 4. Follow the
measurements in figure 6. Solder on a copper elbow and a piece of
straight copper tube. Use the material left over from cutting.
6. Cut the heat transfer fluid out pipe as in figure 5. Follow the
measurements in figure 7. Solder on a copper elbow and a piece of
straight copper tube. Use the material left over from cutting.
Note: Do not use compression fittings to secure the elbow on the copper
pipe. Compression fittings require more space which is limited in the
heat pump.
7. Refit the heat transfer fluid pipes on the heat pump. See the result in
figures 8 and 9.
8. Refit the sensor on the heat transfer fluid in pipe. Use aluminium
tape, heat transfer compound and cable ties.
9. Slide on Armaflex insulation on both pipes and secure using
Armaflex tape. Make sure you cover both pipes well, otherwise there
is a risk of condensation.
Install the collector as follows:
1. Dig a trench that is 3 metre deep and about 0.5 - 1 metre wide. The
length of the trench depends on the number of collector modules.
The space between the collector modules should be about 20 cm but
may be extended if needed. The pipes on the collector modules are
cut to a suitable length. A trench width of at least 3 metres is
required if collectors are placed at both sides of the trench.
The collector modules can also be installed horizontally. The
collector should then lean with the connection side at least 30 cm
above the bottom so that air venting works. Trench measurements:
average depth: 1.5 m, width: 2.5 m.
Minimum distance between collectors and the house is 3 metres.
Trench digging must adhere to applicable regulations.
2. Installation of the collector modules can be simplified by joining up to
five modules on the ground before they are positioned in the trench.
3. Place the collector modules in the trench and join the modules
together using weld sleeves or screw couplings.
4. Pressure test the system with air up to 4 bar. Reduce to 2 bar when
refilling.
5. Refill using sand or soil without stones.
6. Route the return line, 40mm PEM, at a depth of at least 1m.
7. Route the collector hoses up to the house wall. Hoses must be
insulated over the final 2 metres towards the house. Non-inflammable
pipe material must be used when routing the pipes indoors. When
plastic hose is used indoors this must be protected by 40mm fire
resistant, mineral wool sheet, EI30.
8. Filling of the heat transfer fluid, venting and commissioning of the
heat pump must be carried out by your service engineer.
The heat pump and collector hose in general
Hose welding
equipment
Pipe coupling
1 inch
Weld sleeve
Ø40mm
Hose pliers Screw coupling
Vertical installation
Horizontal installation
TECHNICAL INFORMA
TION
FOR THE USER
FOR THE INST
ALLER
TECHNICAL INFORMA
TION
FOR THE USER
FOR THE INST
ALLER
Figure 4 Heat transfer
fluid in
Figure 1
Figure 2
Figure 3
Figure 5 Heat transfer
fluid out
Figure 6 Figure 7
530mm
Solder
elbow
Straight
piece
Straight
piece
Solder
elbow
225mm
560mm
Figure 8 View from
the left
Figure 9 View from
the right
HTF
collector out
Sensor
HTF
collector in