6
© Baxi Heating UK 2012
4.0
Ancillary components
4.1
Expansion vessel
1. Membrane expansion tanks for solar primary heating
circuit. Manufactured according to the Directive PED 97/23/CE
(approved noZ-DDK-MUC-02-396876-04).
2. Butyl membrane suitable for solar primary heating fluid, DIN
4807-3 approval.
Maximum working tempe110°C.
Maximum percentage of glycol 50%.
Connection: 3/4” BSP male parallel
3. Expansion vessel supplied with wall mounting bracket
and self sealing vessel connection that will allow removal of the
vessel for maintenance without losing solar heat transfer fluid.
4.2
Solar heat transfer fluid
1. The system uses a sealed system indirect solar primary circuit
which must be filled with the solar heat transfer fluid provided.
This is a Pre-mixed (40% glycol / 60% water) Solar thermal
transfer fluid, based on1,2 - propylene glycol with corrosion
inhibitors. It is Non-toxic, odourless, bio-degradable.
2.
DO NOT
mix the fluid with other types.
3. The use of chemical resistant gloves and suitable eye
protection is required when handling.
4. A full safety data sheet is available on request.
5. The system should be filled when there is no direct radiation
from the sun. If direct radiation occurs the collector panels
should be shaded by covering them during filling and flushing.
6. Although the solar heat transfer fluid is non corrosive and bio-
degradable appropriate precautions should be taken when
handling.
7. Wash with soap and water if the fluid comes into contact with
skin.
8. If fluid gets into eyes, immediately rinse with large quantities of
clear running water.
9. The solar heat transfer fluid must be pumped into the system.
The pump can be electric or manual but must be capable of
producing a pressure of at least 2 bar. The system should be
thoroughly flushed to remove any contaminants in the solar
primary circuit prior to filling with the heat transfer fluid
10. The fluid is supplied in 20litre container.
Weight of container full - 21kg.
11. Systems found to have low glycol concentrations will not be
covered by the warranty.
Ø300mm
392mm
3
/
4
”
Expansion vessel
Fig. 6
