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Doku VARIOMAX_engl_06 12
June. 2012
Goch GmbH & Co. KG
1.5 sec after switching on, the igniter creates a high-voltage spark and,
simultaneously, the solenoid gas valve opens.
- If after an ignition attempt of max. 30 sec. no flame is recognized by the
ionization flame monitoring module, the ignition stops and the gas valve closes
(the heater shuts down for safety and sends a failure report).
- If during the ignition attempt (max. 30 sec.) a flame appears and creates an
ionization current ≥ 0.8μA, the ignition stops and the unit remains in operation.
Reset after safety shutdown
- The heater needs to be disconnected for at least 5 sec. Afterwards repeat
ignition as described above.
Reigniting
- If a malfunction occurs during operation, the igniter will turn on for a maximum
duration of 30 sec. If no ionization current is recognized within this ignition
attempt period, the heater goes into safety shutdown.
c) Checking Nozzle Pressure
Connect pressure measuring device to nozzle test nipple (see Combination
Valve
– Top View)
Switch heater on at full load
Compare measured nozzle pressure to rating plate specifications. If necessary,
use pressure regulator to correct. For correct nozzle pressures refer to Table in
Ch. 13.
d) Testing Two-Stage Operation
Switch on heater at full load and allow 10 to 15 min. to burn until the ceramic tiles
glow brightly.
Switch heater to half load and allow 10 to 15 min to burn. The ceramic tiles will
turn considerably darker.
Switch back to full load.
