Installation & Operation Manual
58
11
Operating information
Sequence of operation
(continued)
OPERATION
DISPLAY
8. If the DHW thermostat remains on for more than 30 minutes, and
the space heating call for heat is also on, then the control will
turn on the boiler pump, turn off the DHW pump after 2 seconds,
and resume modulating based on the space heating set point.
As long as both the space heating and DHW calls for heat
remain active, the control will switch back and forth between the
two modes until one of them is satisfied.
BLR: SH 41% RATE
OUT: 123.0F(129)
9. Once both calls for heat are satisfied, the control will turn off the
burner. The blower will remain on for the 10 second postpurge
cycle. Any pumps that are running will continue to run for their
respective pump delay times, then turn off.
BLR: POSTPURGE
OUT: 127.4F(129)
10. Boiler pump off, system pump continues its delay if longer.
BLR: Standby
OUT: 124.7F(129)
11. System pump off.
BLR: Standby
OUT: 122.9F(129)
