GC
VE
VS
M
T
T
VR
R1
R2
RP
D
VMS
B
GP
TS
C
CE
80
Chapter 10
START-UP
FILLING THE SOLAR CIRCUIT
Water/glycol
mixture
Symbol
Description
Symbol
Description
B
Domestic hot water cylinder
R1
Tap 1
C
Solar collector
R2
Tap 2
CE
Electronic control unit
RP
Flow rate adjuster
D
Deaerator
T
Thermometer
GC
Pump unit
VE
Expansion vessel
GP
Loading the pump unit
VS
Safety valve
M
Manometer
VR
Non-return valve
Before fi lling the pre-set pressure must be checked of the expansion vessel using a manometer.
Filling is performed as described below:
Connect a GP feed pump using a rubber pipe (e.g. manual or drill pump) to the container and tap R1.
On request the installer is supplied with the high head mobile pump for system loading (accessory - code
002160627).
Take a rubber pipe from tap R2 to the container.
The taps must be open and the shut-off valve VI must be closed (see fi gure 10.2).
Open all shut-off taps upstream from the automatic relief valves or all of the manual air-bleed valves.
Use the pump to fi ll the collector circuit with the water and glycol mixture until the fl uid starts to
escape from tap R2.
fi gure 10.5