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Part number 550-100-400/0119
137
Ratings — Ultra Series 4 boilers
Figure 138atins and enineerin data
®
Series 4
gas-fired water boiler — Boiler Manual
Btuh
(Note 7) Btuh (Note 2 and 7) AU (Note 1) Btuh (Note 3) allons
(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”
Ultra-310 310,000 289,000 93.3 252,000 2.10 4”
Btuh (Note 7) Btuh (Note 7) Btuh (Note 3) Note 5) (Note 6) allons
(Note 4)
91.7 91.3 2.10
Notes
1
As an Energy Star Partner, Weil-McLain has determined that Ultra boilers meet the Energy Star guidelines for energy effi ciency.
NOTE: Adjusting boiler fi ring rate will affect AFUE rating.
2
Based on standard test procedures prescribed by the United States Department of Energy.
3
Net AHRI ratings are based on net installed radiation of suffi 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.
4
Ultra boilers require special venting, consistent with Category IV boiler.
Use only the vent materials and methods specifi 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.
5
Combustion effi ciency is based on AHRI testing procedure BTS-2000, and equal to 100% minus fl ue loss.
6
Thermal effi 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
modifi cations and automatically derates itself by approximately 4% per 1000 feet above sea level.
OUTD OOR SENSOR
IMPORTANT
In accordance with
, this boiler is equipped with a
feature that saves energy by reducing the boiler
water temperature as the heating load decreases.
This 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.
An external energy management system is installed that reduces the boiler water temperature
as the heating load decreases.
This boiler is not used for any space heating.
This boiler is part of a modular or multiple boiler system having a total input of 300,000 BTU/
hr or greater.
This boiler is equipped with a tankless coil (not applicable to Ultra boilers).
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