Ultra Boiler Manual

Part number 550-100-440/0122
113
  
MAINTENANCE & SPECIFICATIONS
 (continued)
4. If ame signal still remains low, inspect the vent and air
piping. en inspect the heat exchanger, following the pro-
cedures given in this manual for removal and reinstallation of
the head exchanger cover plate and other boiler components.
Clean the exchanger as described in this manual if necessary.

1. For installations at altitudes above 5,500 feet, make sure the
control is set up for high altitude in the boiler setup menu.
e U-Control module automatically adjusts low re and
ignition rates to compensate for high altitude conditions.
2. For installations below 5,500 feet, high altitude should NOT
be enabled.
3. Use the U-Control display to navigate to Manual test mode
(see Figure115,page102).
4. Set the ring rate to MINIMUM (low re).
5. Write down the blower RPM value shown and compare to
the value in Figure121. e value should no less than the
“Minimum setting” and no higher than the Ignition “Fac-
tory setting” listed. Low re rate (and corresponding blower
speed) is adjusted in the boiler setup menu.
6. Set the ring rate to MEDIUM (ignition rate).
7. Write down the blower RPM value. It should be within 200
RPM of the value listed in Figure121.
8. Set the ring rate to MAXIMUM (high re).
9. Write down the blower RPM value. It should be within 200
RPM of the value given in Figure121.
10. If any of the values are outside the ranges listed in the previous
steps, contact the factory for technical assistance.

1. Set the boiler to high re. en adjust the U-Control mod-
ule display to view ue gas temperature and boiler return
temperature.
2. e ue gas temperature should be no more than 54 °F higher
than the boiler return temperature.
3. If the ue temperature is higher than this, shut down the
boiler, allow to cool, and follow the procedure starting on
page125 to clean the Nanogate coated heat exchanger.
Figure 121 Firing rates and corresponding blower speeds (low re, ignition, and high re) — for altitudes up to 5,500 feet
Ultra Model -80 -105 -155 -230 -299 -399
% RPM Btu/Hr % RPM Btu/Hr % RPM Btu/Hr % RPM Btu/Hr % RPM Btu/Hr % RPM Btu/Hr

Minimum setting
20 1,300 16,000 20 1,300 21,000 20 1,300 31,000 20 1,300 46,000 20 1,400 62,000 20 1,520 79,800
Factory setting
33 1,983 26,400 33 1,983 34,650 33 1,983 51,150 33 1,983 75,900 33 2,156 102,300 20 1,520 79,800
High altitude
33 1,983 26,400 33 1,983 34,650 33 1,983 51,150 33 1,983 75,900 30 1,981 93,000 28 2,002 111,720
Ignition (“Medium” setting in manual test mode)
Factory setting 47 2,300 37,600 47 2,300 49,350 47 2,300 72,850 47 2,300 108,100 36 2,330 111,600 33 2,303 131,670
High altitude 62 3,500 49,600 62 3,500 65,100 62 3,500 96,100 62 3,500 142,600 51 3,202 158,100 40 2,725 159,600
 (adjust if desired to match maximum system load — High re % rate = Max heat load / Boiler output)
Factory setting
94 5,200 75,200 94 5,200 98,700 94 5,200 145,700 94 5,200 216,200 96 5,818 297,600 96 6,099 383,040
Maximum setting
100 5,500 80,000 100 5,500 105,000 100 5,500 155,000 100 5,500 230,000 100 6,050 299,000 100 6,340 399,000