Viessmann Vitobloc 200 EM-50/81 Operating Instructions Manual page 14

Preparations
2.1.3 Coolants
Mandatory components
The cooling system must be filled with a mixture of
drinkable tap water and an anti-freeze agent contain-
ing a corrosion-preventive additive for engine cooling
systems.
-
62 vol.-% water
Suitable for this purpose is potable tap water with the
analysis values that are restricted as follows:
appearance: colourless, clear, and free from mechan-
ical contaminants
hardness:
chloride:
sulphate:
pH-value at 20 °C:
PLEASE NOTE
Enquiries about existing analyses of the
drinking water can be made at the mu-
nicipal authorities. If the quality of the
drinking water is insufficient, mix the lo-
cally available drinking water with fully
dematerialized water or distillate or
condensate until the analysis values as
stipulated above have been achieved.
-
38 vol.-% anti-freeze agent
WARNING
Use only anti-freeze agents with corro-
sion-preventive additives for engine
cooling systems that have been ap-
proved in the CHP module manufactur-
er's instructions for the operating re-
sources (see Table 6 "Approved anti-
freeze agents").
A minimum concentration of 38 vol.-%
of anti-freeze agent must always be ob-
served, since the corrosion protection
will not be ensured with less than the
38 vol.-% as required.
14
maximum 20° dGH
maximum 100 ppm
maximum 150 ppm
6.5 - 8.5
Operating instructions for the natural gas-fuelled CHP module VITOBLOC 200
How to handle anti-freeze concentrate
WARNING
When handling anti-freeze concentrate
wear protective gloves and goggles.
Please observe the safety data sheet
(can be obtained from glycol suppliers).
If having been in contact with the
concentrate:
⚫ Objects
Wipe off any spillage with an absorbent material and
dispose it as special refuse.
⚫ Skin
Wash the relevant parts of the body with water and
soap.
⚫ Eyes
Rinse they eyes thoroughly for 15 min under running
water with the lids spread apart and seek medical
advice thereafter.
Control of the coolant and its renewal
●
Check the concentration every quarter year with a
density spindle or a refractometer.
●
Never allow the anti-freeze concentration to drop
below 38 vol.-%.
●
Always compensate losses of coolant with a mix-
ture of water and 38 vol.-% anti-freeze.
•
CAUTION
Do not use containers designated for
drinking water or foodstuffs
●
The entire coolant must be exchanged after 2
years at the latest.
●
Treat coolant as well as corrosion and/or anti-
freeze agents as special refuse when disposing
them.
●
When disposing disused coolant observe the regu-
lations of the local authorities.