Installation
Gaz 6000 W – 6720866247 (2019/07)
16
5 Installation
WARNING:
Risk of death from explosion!
Escaping gas can cause an explosion.
▶ Only allow a licensed contractor to carry out work on gas-carrying
components.
▶ Close the gas isolator before working on any gas-carrying
components.
▶ Replace used gaskets with new gaskets.
▶ After completing work on gas-carrying components, carry out a leak
test.
WARNING:
Risk to life through poisoning!
Escaping flue gas can cause poisoning.
▶ Check for leaks after working on flue gas routing components.
5.1 Prerequisites
▶ Prior to installation, obtain the approval of the gas supplier and the
flue gas inspector.
▶ Convert open heating systems to sealed systems.
▶ To prevent the formation of gas, do not use galvanised radiators or
pipes.
▶ In the case of LPG, install a pressure regulator with a pressure relief
valve.
Gravity circulation heating
▶ Connect the device to the existing piping system via a low loss header
with a dirt separator.
Underfloor heating systems
▶ Observe the permitted flow temperatures for underfloor heating
systems.
▶ When using plastic pipes, use diffusion-resistant piping or create
system separation by means of heat exchangers.
Surface temperature
The maximum surface temperature of the appliance is below 85 °C.
Therefore no special safety measures are required to protect flammable
materials and fitted furniture. Country-specific regulations must be
observed.
5.2 Solar preheated water (only WBN 6000-.. CR)
WARNING:
Risk of scalding from hot water!
DHW temperatures over 60 °C can arise during solar operation and this
can cause scalding.
▶ Use a thermostatic DHW mixer from the Solar set (accessories) to
limit the temperature to 60 °C!
CAUTION:
Risk of system damage through excessively high temperatures!
Excessive temperatures due to solar preheated water can damage the
device.
▶ Use a thermostatic DHW mixer from the Solar set (accessories) to
limit the temperature to 60 °C!
▶ If solar preheated water is used, activate the burner start delay
( service function 2.bf, chapter 11).
5.3 Fill and top-up water
Fill and top-up water for the heating system
Unsuitable fill and top-up water in the heating system can result in the
heat exchanger scaling up and failing prematurely.
Table 13
For straightforward water treatment:
▶ Use the system approved by us.
Antifreeze
The following antifreeze fluids and concentrations are approved:
Table 14
Heating water additives
Table 15 Permissible corrosion inhibitors
Sealant
In our experience, the addition of sealants to the heating water can cause
problems (deposits in the heat exchanger). We therefore advise against
their use.
Hardness range Water treatment
soft (≤ 8.4 °dH) not required
medium (8.4 - 14 °dH) recommended
hard (≥ 14 °dH) required
Designation Concentration
Varidos FSK 22 - 55 %
Alphi - 11 25 - 40 %
Glythermin NF 20 - 62 %
Antifrogen N 20 - 40 %
Corrosion inhibitor Concentration
Nalco 77381 1 - 2 %
Sentinel X 100 1,1 %
Fernox Protector F1 As specified by the manufacturer
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