Ultra Boiler Manual

Part number 550-100-440/0122
137
  
MAINTENANCE & SPECIFICATIONS

Figure 138 Ratings and engineering data

Boiler
Model
Number
CSA
Input
Heating
Capacity
Seasonal
󰀩
Net
Rating
(water)
Boiler
Water
Content
Vent/Air
Pipe
Size
Btuh (Note 7) Btuh (Note 2 and 7) AFUE % (Note 1) Btuh (Note 3) Gallons
(Note 4)
Ultra-80 80,000 71,000 93.5 62,000 0.69 2” or 3”
Ultra-105 105,000 94,000 94.0 82,000 0.82 2” or 3”
Ultra-155 155,000 139,000 94.0 121,000 1.17 3”
Ultra-230 230,000 207,000 94.1 180,000 1.57 3” or 4”
Ultra-299 299,000 270,000 92.5 235,000 2.10 4”
Boiler
Model
Number
CSA
Input
Gross
Output
Net
AHRI
Ratings
Combustion
󰀩
Thermal
󰀩
Boiler
Water
Content
Vent/Air
Pipe
Size
Btuh (Note 7) Btuh (Note 7) Btuh (Note 3) % (Note 5) % (Note 6) Gallons
(Note 4)
Ultra-399 399,000 364,000 317,000 91.7 91.3 2.10 4”
Notes
1
As an Energy Star Partner, WM Technologies has determined that Ultra boilers meet the Energy Star guidelines for energy eciency.
NOTE: Adjusting boiler ring rate will aect AFUE rating.

Based on standard test procedures prescribed by the United States Department of Energy.

Net AHRI ratings are based on net installed radiation of sucient quantity for the requirements of the building and nothing need be
added for normal piping and pickup. Ratings are based on a piping and pickup allowance of 1.15. An additional allowance should be
made for unusual piping and pickup loads.

Ultra boilers require special venting, consistent with Category IV boiler.
Use only the vent materials and methods specied in this manual.
Ultra-80 and -105 vent/air pipes can be either 2” or 3” pipe. Vent/air pipe length limits for 2” piping are not as long as for 3” piping.
Ultra-230 vent/air pipes can be either 3” or 4” pipe. Vent/air pipe length limits for 3” piping are not as long as for 4” piping.

Combustion eciency is based on AHRI testing procedure BTS-2000, and equal to 100% minus ue loss.
6
ermal eciency is based on AHRI testing procedure BTS-2000.
7
Ratings shown are for sea level applications only. For altitudes from sea level to 5,500 feet above sea level, the Ultra boiler requires no
modications and automatically derates itself by approximately 4% per 1000 feet above sea level.
THE OUTDOOR SENSOR SUPPLIED WITH THE BOILER MUST BE INSTALLED UNLESS EXEMPTED BELOW:

In accordance with Section 303 of the 2007
Energy Act, this boiler is equipped with a
feature that saves energy by reducing the boiler
water temperature as the heating load decreases.
is feature is equipped with an override which
is provided primarily to permit the use of an
external energy management system that serves
the same function.
THIS OVERRIDE MUST NOT BE USED UNLESS AT LEAST ONE OF THE FOLLOWING
CONDITIONS IS TRUE:
• An external energy management system is installed that reduces the boiler water temperature
as the heating load decreases.
• is boiler is not used for any space heating.
• is boiler is part of a modular or multiple boiler system having a total input of 300,000 BTU/
hr or greater.
• is boiler is equipped with a tankless coil (not applicable to Ultra boilers).