Commissioning; Use Of Heat Transfer Fluid; Purging And Filling With A Hand Pump (Air Vent On Roof); Purging The Pipes - Bosch Worcester AGS 5 Installation And Servicing Instructions

COMMISSIONING

6 COMMISSIONING
At the time of commissioning, complete all
relevant sections of the Benchmark Checklist
located on the inside back pages of this
document.
After servicing, complete the relevant Service
Interval Record section of the Benchmark
Checklist located on the inside back pages of
this document.
CAUTION: System damage from frozen water
or vaporisation in the solar heating circuit
B Purge and fill the solar heating system only
when the sun is not shining on the
collectors and (if purging with water) no
frost is expected.
When filling with heat transfer fluid, take the
additional volume of the pre-cooling vessel
into account (if installed).
The pre-cooling vessel and the expansion
vessel must be adequately drained.
6.1

USE OF HEAT TRANSFER FLUID

CAUTION: Risk of injury through contact
with heat transfer fluid
B When handling heat transfer fluid, always
wear protective gloves and goggles.
B If heat transfer fluid comes into contact
with skin: wash off the heat transfer fluid
with water and soap.
B If heat transfer fluid comes into contact
with eyes: holding eyelids wide open,
thoroughly wash eyes with running water.
The heat transfer fluid is pre-mixed and ready to use.
It guarantees safe operation within the specified
temperature range, protects the system from frost
damage and minimises risk of vaporisation.
The fluid is biodegradable. A safety data sheet with
further information regarding the heat transfer fluid can
be requested from the manufacturer.
The collectors must only be operated with the following
heat transfer fluids:
Heat transfer fluid
Flat plate Tyfocor L 45/55
collectors
Evacuated tube Tyfocor LS
collectors
Tab. 6 Tyfocor type in relation to collector type
14
6.2
6.2.1
B Use a hose (1) to connect the fill and drain valve on
B To drain the water away, connect a hose (2) to the fill
Fig. 13 Solar heating station with ball valves and gravity
1
2
B Open all shut-off fittings.
B Close the right-hand ball valve (2) on the solar heating
B Purge the pipework, making sure that the maximum
B Shut off the water supply.
Temperature range
– 29 ... +170 °C
– 28 ... +170 °C
PURGING AND FILLING WITH A HAND
PUMP (AIR VENT ON ROOF)

PURGING THE PIPES

If a pre-cooling vessel is installed:
B Disconnect the pre-cooling vessel from
the solar heating circuit while purging so
that the water remaining in the pre-
cooling vessel does not get mixed with
the heat transfer fluid.
the safety assembly to the mains water supply.
& drain valve on the flow limiter.
7747006489-21.1SD
brakes in the thermometers
Hose for water supply
Hose for water drainage
station and the ball valve on the air vent (
(3)).
operating pressure is not exceeded.
6 720 643 603 (2011/11)
1
2
Fig. 15,