lunaSchwank
Technical Instructions
13
Set nozzle pressure at min. load:
Determine from the
table on page 13
the
necessary nozzle pressure for your system at
minimum load.
Interrupt the power supply to the lifting magnet.
Rotate the adjusting screw
B
with a screwdriver
until you reach the desired nozzle pressure.
In clockwise direction:
Gas pressure
increases.
In anti-clockwise direction:
Gas pressure
reduces
Check the setting as described above.
Turn off the test nipple again.
Check after each measurement
whether you have turned off the
test nipple!
Put on the cover again.
Start the complete system.
Check the connection pressure at full operation
in the heater, which you have installed the
farthest from the entry of the gas pipe.
The connection pressure must be at least 2 mbar
higher than the set nozzle pressure.
Repair / maintenance
Regular maintenance is the prerequisite for the
smooth operation of the heating system. You can
contact the Schwank customer service for this
[phone No. see backside of this instruction].
According to DVGW rules G 638, the operator must
check and maintain the gas heaters at least once a
year for safety reasons.
Work to be done during maintenance:
Checking the heater, the electrical and gas
connection for damages or impurities; cleaning,
if necessary.
Check for leakage in all gas conducting
components
Functional check of the ignition and flame
monitoring as well as of gas magnet valve
Checking the connection pressure
Faults: see P. 9
Checking the adherence to safety distances
Access to components liable for maintenance for service activities
In order to carry out service activities at the lunaSchwank, remove either the complete cladding of the control
section [4 x M4 hexagonal screws
Fig. 3
] or remove the side cover.
