Wolf COB-2 - Heating System and Fuel Supply

Planning
14 | WOLF GmbH 3066501_201910
4.2.3 Installation site requirements
Requirements Possible consequences of failing to
follow instructions
Substrate Level
Adequate load bearing capacity
Faults due to air pockets
Ventilation (open ue) Ventilation requirements specied in
TRÖl
Operating the appliance with a leaking
ue gas system presents a risk of
poisoning or asphyxiation due to the
escape of ue gases
Frost protection Adequate ambient temperature System damage due to frost
Vapours and dust No aggressive steam
No signicant dust levels
Appliance must not be installed in
areas like workshops, washrooms,
hobby rooms, etc.
Component damage and/or signicant
soiling of hot water heat exchanger
Combustion air Free from halogenated hydrocarbons Premature ageing of heat exchanger due
to corrosion.
For installation in oil
storage rooms
Comply with relevant national re
safety regulations.
Risk of explosion/re
Table 4.1 Installation site requirements
4.3 Heating system
4.3.1 Safety equipment
– Provide a drain & ll valve at the lowest point in the system.
– The heat exchanger has not been tted with an expansion vessel at the factory.
► The expansion vessel must be sized sufciently, in accordance with DIN 4807.
► Fit the expansion vessel onsite (WOLF accessories range).
WARNING
Risk of explosion due to pressure buildup!
Scalding and physical injury.
► Do not install a shut-off valve between the expansion vessel and the heat generator.
This does not include buttery valves upstream of the expansion vessel.
► Route the discharge pipe of the buttery valve into a drain outlet.
– Make sure that a drain outlet and safety assembly is provided.
The safety assembly from the WOLF accessories range includes an integral 3 bar safety valve.
– A minimum ow rate prevents damage to the hot water heat exchanger as a result of overheating or
steam hammers. This is not required for ow temperatures < 80 °C.
– WOLF recommends using a sludge separator with a magnetite separator.
Deposits in the heating water heat exchanger may lead to boiling noises, a drop in performance or
faults. Using a sludge separator with a magnetite separator protects the heat generator and the high-
efciency pump against magnetic and non-magnetic contamination.
► Install a sludge separator with magnetite separator in the heating return to the heat generator.
– WOLF recommends using an air and microbubble separator.
Microbubbles can cause faults in the heating circuit. An air and microbubble separator is most effective
at the hottest point of the heating circuit.
► Install the air and microbubble separator in the heating ow of the heat generator.