Groen CC20-E Operator's Manual page 180

C/2-G
Sequence Of Events
8. K2 remains energized.
9. K2 de-energized.
10. K11 and K12 de-energized.
11. K6 energized and de-energized. (cycles)
12. K12 energized.
13. K11 energized.
Combo/Meat Probe/Hold Mode
1. Relays K13 and K15 energized. Boiler drain valve closes and boiler fill valve
opens.
2. Relay K6 energizes. Fan motor turns on.
3. Relay K12 energizes allowing gas valve SV2 to open. Pilot runner tube opens.
4. After 7 seconds, relay K11 energizes and air manifold gas valve SV1 opens.
Air burner turns on.
5. When water level reaches the low water probe, K2 and K3 energize allowing
the boiler low fire gas valve SV3 and boiler high fire gas valve SV4 to open.
6. When water reaches the high water level probe, relay K13 de-energizes. The
boiler water fill valve closes.
7. When oven cavity temperature reaches 200°F, relays K11 and K12 de-
energize. Gas valves SV1 and SV2 de-energize.
8. When boiler water temperature probe reaches READY, relay K3 de-energizes.
Boiler high fire gas valve closes. Relay K2 remains energized. Boiler goes to
low heat.
9. Relay K12 energizes allowing gas valve SV2 to open. Pilot runner tube opens.
10. After 7 seconds relay K11 energizes and air manifold gas valve SV1 opens.
Air burner turns on.
11. Relay K14 energizes. Condensate water spray valve opens.
12. When the Meat Probe reaches set point temperature for at least 30 seconds
or more, relays K11 and K12 de-energize. Air elements turn off.
13. Relay K6 will energize and de-energize, cycling the fan on for 10 seconds and
off for 30 seconds.
14. When the oven cavity cools down to the hold set point temperature, relay K12
energizes allowing gas valve SV2 to open. Pilot runner tube opens.
15. After 7 seconds, relay K11 energizes and the air manifold gas valve SV1
opens. Air burner cycles on and off to maintain the cavity temperature.
5A-6