Weil-McLain Ultra 3 series User Manual page 88

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gas fired water boiler
U-Control operation and setup — advanced
Figure 103 U-Control setup options (see Figure 102, page 86 for location in menu sequence)
Menu/Item Units
Boiler Model
80, 105, 155,
230, 299, 310,
399, 550, 750
High Altitude
yes or no
High Limit
°F
WWSD Temp
°F
Adjust Outdoor
°F
(difference)
Add'l Heat Demand Type
Types
Add'l Heat Demand Time
minutes
Boiler Priority 1
System Type
Types
Max Supply
°F
Min Supply
°F
Max OD Reset
°F
Min OD Reset
°F
Modulate On Diff
°F
Modulate Off Diff
°F
Max On Time
minutes
Min On Time
—
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
Boiler Priority 2
System Type
Types
Max Supply
°F
Min Supply
°F
Max OD Reset
°F
Min OD Reset
°F
Modulate On Diff
°F
Modulate Off Diff
°F
88
— Boiler Manual
Low High Default
Value Value
Boiler Settings
factory
no
50 200 200
Off, 50 100 70
-10 +10 0
Off Type 4 Off
0 240 0
System Settings
Off Custom DHW - direct DHW-direct doesn't use ODR, boost, or Add'l heat demand output
60 190 190
60 190 N/A
50 100 N/A
–20 50 N/A
2 10 5
2 10 5
off 240 30
— — —
off 240 N/A
(not used)
0 240 20
off 240 30
off on on
off on off
off on off
21% 100% 96%
20% 99% 33% (80-299)
20% (399)
FTB
60 190 180
60 190 130
50 100 70
–20 50 0
2 10 5
2 10 5
Comment
THIS MUST BE SET CORRECTLY FOR SAFE OPERATION
and flame sense (Display will show "HA" after the model number if high altitude has been
selected, below.) NOTE: Ultra-550 and -750 are commercial models.
Adjusts ignition and low fire fan speed (for altitudes above 5, 500 feet only)
If boiler out temperature reaches this temperature boiler will lockout which requires a
manual reset
Boiler will not respond to heating calls above this outdoor temp
This value plus outdoor sensor reading equals outdoor temp (Use this setting to
compensate for solar gain or other factors that cause a shift in sensor temperature.)
Type 1 — Ultra is primary source, starts secondary after delay (requires system sensors)
Type 2 — Ultra is secondary source, starts primary immediately
Type 3 — Boilers operate in parallel, Ultra boiler is LEAD, outputs 0–10 VDC to others
Type 4 — Boilers operate in parallel, Ultra boiler is SHADOW, receives 0–10 VDC input
Delay before bringing on additional heating appliances
Boiler enters manual reset lockout at 200°F
N/A - DHW does not use reset
N/A - DHW does not use reset
N/A - DHW does not use reset
Boiler turns on if temperature drops below target minus differential on
Boiler shuts down if modulates past target plus differential off
Longest time boiler will satisfy this system before switching to an active lower priority
Priority 1 does not have this setting
When operating on ODR increases 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 specific (derated to 96% from factory)
NOTE: Adjusting boiler firing rate will affect AFUE rating.
Boiler Model and altitude specific
Finned-Tube Baseboard
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
(continued)
. Adjusts blower speeds
Part number 550-100-090/0809