krom schroeder E8 - SEQUENCE CHANGE(Time for Switching HS); HS COOL-FCT (Cooling Function for the Heat Generator); T-HS COOL (Start Temperature for Cooling)

Part 2: Overview of display values and settings Expert area
37
- and temperature drops below temperature setting by 5 K
(= start of blocking time / enable 2nd. burner stage)
- and expiration of blocking time
Switch off 2nd burner stage when the temperature setting
is exceeded by the HYSTERESIS.
Switch 2nd Burner stage when temperature drops below
set temperature of the heat generator.
Switch off the 1st burner stage when 2nd stage enabled
after set temperatures are exceeded by [HYSTERESIS +
HYST BURNER2]
5K
a
c
c
A
B
C
D
E
F
d
e
e
d
b
57°C
55°C
50°C
45°C
A Temperature of the heat generator
B Time
C Set temperature of the heat generator
D LOCK TIME (blocking time 2. burner stage)
E HYSTERESIS (dynamic switching hysteresis)
F HYST BURNER2 (hysteresis for 2nd heat generator)
a Stage 1 on
b Start of blocking time
c Stage 2 on (stage 2 enable)
d Stage 2 off
e Stage 1 off (cancel stage 2 enable)
SEQUENCE CHANGE(time for switching HS)
Only for operation with two heat generators.
The controller can be optionally used for controlling heat-
ing systems with two-stage burners or heating systems
with two single-stage heat generators. For operation with
two heat generators, there is the option to switch the HS
sequence after the number of operating hours set here for
the current heat generator "1".
HS COOL-FCT (Cooling function for the heat generator)
T-HS COOL (Start temperature for cooling)
E Applies to 1st heat generator or the solid fuel boiler
(multifunction relay 1)!
If the cooling function for the heat generator is activated
(HS COOL-FCT = 01), the heating circuits are put into op-
eration with T-FLOW MAX (if cooling function permitted in
HC) as soon as the set starting temperature T-HS COOL
is exceeded by one of the heat generators. The cooling
function is stopped when the temperature drops below the
start temperature T-HS COOL by 5 K.