Groen CC20-E Operator's Manual page 11

CC10-E
Sequence Of Events
After Serial Number C7439MS
3. When water reaches low water probes, relays K1, K2, K3, and K4 energize.
High water heating elements turn on. Relay K9 through K12 de-energize.
4. When water reaches high water probe, relay K13 de-energizes and boiler fill
valve closes.
5. When boiler water reaches "ready" temperature, relays K1, K3, and K4
deenergize and water heating elements turn off.
6. Relay K2 remains energized.
7. K5 energized. BH1 and BH2 are turned on.
8. K14 energized and condensate spray valve opens.
9. Relays K9, K10, K11, and K12 energize. Air heating elements turn on.
10. When oven temperature reaches the temperature set point, relays K9, K10,
K11, and K12 de-energize. Air heating elements turn off.
Relay Operation Summary
1. K15 and K13 energized. (Drain and Fill)
2. K6 energized. (Fan)
3. K1 through K4 energized. (High Water)
4. K13 de-energized. (Fill)
5. K1, K3, and K4 de-energized. K5 energized. (High Heat to Low Heat)
6. K9 through K12 energized. (High Air)
7. K9 through K12 de-energized. (High Air)
Oven Mode (After Serial Number C7439MS)
Refer to the Oven mode circuit diagrams on page 2-15 and/or the schematic
diagrams on pages 2-16 and 2-17 for the following sequence of events.
1. Relay K6 energized. Fan motor turns on.
2. Relays K9, K10, K11, and K12 energize. Air heating elements turn on.
3. When oven air temperature is 5° below temperature set point, relays K10 and
K11 de-energize. Air heating elements operate at reduced power.
4. When oven temperature reaches the temperature set point, relays K9 and K12
de-energize. Air heating elements turn off.
2-8
(Revised 1/02)