Hoval TopVent GV, Operating Instructions Manual, Page: 25 / 44

TopVent ® GV wall installation
■ Insert the wall feed-through in the wall opening.
– If necessary, shorten the concentric pipe of the wall feed-through as
appropriate in order to adapt it to the particular conditions required.
■ Transport the unit to the installation site.
■ Mount the suspension set on the designated suspension points.
■ Install the unit on the wall.
■ Do not attach any additional loads.
■ Attach the flue gas accessories to the unit.
– Do not use lubricants.
– Perform all pipe connections gas-tight.
– If necessary adjust the pipe lengths to the local conditions.
8.6 Gas connection
Caution
Risk of injury from incorrect handling. Gas connection must be carried out
by trained specialists only!
Please note the following:
■ The fuel used is natural gas. Check the type of gas the unit is set to work with
and, if necessary, have Hoval Customer Service reset the unit to the type of gas
supplied locally.
■ During operation of the unit, the required quantity of gas and the necessary
pressure of gas must be present constantly.
■ Connect the gas supply line with appropriate bolted joints which can be
loosened, tension-free and vibration-free (gas hose, compensator).
■ The connection of the unit to the gas supply line must be gas-tight.
■ Install a gas pressure regulator and a gas shut-off valve in the gas supply line
immediately upstream of the unit, as well as other components required by local
regulations, such as gas filter, gas pressure regulator, pressure gauge with
push-button tap, etc. (not included in the scope of delivery).
■ Clean the inside of the gas supply pipe before connecting it to the unit. Install a
gas filter if necessary.
Attention
When using pressures above 60 mbar to test the gas supply line, always
close the manual isolation valve of the air heater.
Fig. 15: TopVent
®
GV installation
1 2
■
1
Gas pressure regulator (20…50 mbar)
Recommended settings:
– Natural gas G20 20 mbar
– Natural gas G25 25 mbar
■
2
Cut-off-valve
Fig. 16: Gas pressure regulator and cut-off valve in the
gas supply line
24 25
TopVent ® TG | GV | MG
Operating instructions
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