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S
4
®
ERIES
GAS
U-Control operation and setup — advanced
U-Control setup options (see Figure 115, page 102 for location in menu sequence), continued
Max On Time
minutes
Min On Time
minutes
Boost Interval
minutes
Prepump Time: ### SEC
seconds
Postpump Time: ### SEC
seconds
on-off
Circulator 1
Circulator 2
on-off
Circulator 3
on-off
Maximum Rate
%Rate
Minimum Rate
%Rate
System Type
Types
Max Supply
°F
Min Supply
°F
Max OD Reset
°F
Min OD Reset
°F
°F
Modulate On Diff
Modulate Off Diff
°F
Max On Time
—
Min On Time
minutes
Boost Interval
minutes
Prepump Time: ### SEC
seconds
Postpump Time: ### SEC
seconds
Circulator 1
on-off
Circulator 2
on-off
Circulator 3
on-off
Maximum Rate
%Rate
Minimum Rate
%Rate
Circulator 1
on-off
Circulator 2
on-off
Circulator 3
on-off
Circulator 1
on-off
Circulator 2
on-off
Circulator 3
on-off
Part number 550-100-400/0717
-
FIRED WATER BOILER
off
240
30
off
240
15
off
240
off
0
240
20
off
240
30
off
on
off
off
on
on
off
on
on
21%
100%
96%
20%
99%
33% (80-
299/310)
20% (399)
Custom
60
190
190
60
190
70
50
100
70
–20
50
0
2
10
5
2
10
5
—
—
—
off
240
15
off
240
off
0
240
20
off
240
30
off
on
on
off
on
on
off
on
on
21%
100%
96%
20%
99%
33% (80-
299/310)
20% (399)
off
on
on
off
on
on
off
on
on
off
on
off
off
on
on
off
on
off
— Boiler Manual
Longest time boiler will satisfy this system before switching to an active lower priority
Time boiler will satisfy this system before switching to the next active priority
When operating on ODR increase target 10F when this time expires until reaching MAX
Additional time to run circulators longer than standard 10 second time
Circulator run time after call for heat ends
Circulator activates on this call for heat if on
Circulator activates on this call for heat if on
Circulator activates on this call for heat if on
Boiler Model and altitude specifi c (derated to 96% from factory)
NOTE: Adjusting boiler fi ring rate will affect AFUE rating.
Boiler Model and altitude specifi c
Highest target the control will calculate based on outdoor temperature
Target temperature if outdoor sensor is not detected
(manual reset lockout at 200°F)
Lowest target the control will calculate based on outdoor air temperature
Outdoor air temperature that forces the minimum supply water to be target temperature
Outdoor air temperature that forces the maximum supply water to be target temperature
Boiler turns on if temperature drops below target minus differential on
Boiler shuts down if modulates past target plus differential off
Priority 3 does not have this setting
Time boiler will satisfy this system before switching to the next active priority
When operating on ODR increase target 10F when this time expires until reaching MAX
Additional time to run circulators longer than standard 10 second time
Circulator run time after call for heat ends
Circulator activates on this call for heat if on
Circulator activates on this call for heat if on
Circulator activates on this call for heat if on
Boiler Model and altitude specifi c (derated to 96% from factory)
NOTE: Adjusting boiler fi ring rate will affect AFUE rating.
Boiler Model and altitude specifi c
Circulators exercise 10 seconds every 72 hours of inactivity if on
Circulators exercise 10 seconds every 72 hours of inactivity if on
Circulators exercise 10 seconds every 72 hours of inactivity if on
If HxOut sensor out falls below 40F boiler fi res low and turns on this circ until 45F
If HxOut sensor out falls below 40F boiler fi res low and turns on this circ until 45F
If HxOut sensor out falls below 40F boiler fi res low and turns on this circ until 45F
(continued)
105
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