Condensing High
Efficiency Gas Boiler
Ratings - (5 sizes)
80 MBH
105 MBH
155 MBH
230 MBH
310 MBH
All with 20-100%
Modulation
Innovative
Innovative combination of appearance, intelligence
and technology.
High Efficiency
Over 92% AFUE and up to 98% for low temperature
applications.
Attractive
The Ultra boiler features a new attractive design for
installation in any setting.
Intelligent
Features PhD Technology - an intelligent system
that delivers Precision Hydronic heating and
hot water needs while maximizing efficiency by
measuring and responding to the Data parameters
of your heating system.
High Technology
Cast mono block aluminum heat exchanger. Gas
valve, blower and venturi technology that constantly
maintains optimal air and fuel ratio at all firing
rates.
Weil-McLain
Boiler
The Weil-McLain Ultra boiler has been designed for easy
installation. The Ultra boiler requires minimal clearance
and minimal floor space, and the same boiler can be
used in floor standing or wall hung applications.
Water and gas piping is conveniently arranged for connection
at the top or bottom of the boiler. In fact, when using the
boiler in a floor standing application, all boiler connections are
on the top of the boiler except for the condensate drain.
The electrical components have been pre-wired and labeled
on separate line voltage and low voltage terminal strips.
Terminal strips are provided for quick and easy field wiring.
Venting has been simplified by using PVC for both exhaust
and combustion air. Slide the PVC into the top outlet flue
pipe adaptors and tighten the restraining ring. No messy
sealants required. You can even achieve vent runs up to the
equivalent of 100 feet.
For fast and easy installation, combine an Ultra PLUS
Indirect-Fired Water Heater with your Ultra boiler installation.
Ultra PLUS water heaters come in three sizes:
The Ultra comes with a side mounted service receptacle on
a separate circuit for use with a condensate pump, service
equipment or service light.
PLUS 40
PLUS 60
PLUS 80
The Ultra boiler is lightweight compared to a conventional
boiler. Side jacket handles are provided for easy handling
along with four adjustable boiler feet for easy placement and
leveling.
Combined with an Ultra boiler, the Ultra PLUS water heater
provides more domestic hot water when you need it, while
taking advantage of the extremely high efficiency of the Ultra
boiler. A standard feature of the Ultra boiler control module
is domestic hot water priority control, providing quicker
response time for domestic hot water demands, along with
faster recovery times for the hot water tank.
The perfect match for an Ultra boiler is an Ultra PLUS Indirect-
Fired Water Heater.
High Efficiency And Environmentally Friendly
All Ultra boilers feature AFUE efficiencies in the range of
92.0 - 93.0%. These are some of the highest efficiencies in
the industry, however, Ultra boilers, when used in common
low temperature applications have annual efficiencies of
98.0%. The Ultra boiler exceeds all of the requirements of
the Department of Energy’s ENERGY STAR program.
Besides being Ultra High Efficient, the Ultra boiler is
environmentally friendly. Through PhD Technology and the
use of our high grade burner, the Ultra boiler produces less
NOx while exceeding all current environmental codes and
is certified by South Coast Air Quality Management District
(Rule 1146.2) in California.
Condensing High Efficiency
Gas Boiler
20-100% Modulation
SERIES 2
STANDARD EQUIPMENT
80
105
155
230
310
Factory Tested
Part No.
Part No.
Part No.
Part No.
Part No.
Limited 15 Year Heat Exchange Warranty
Homeowner Protection Plan with
•5 years Parts and Labor
Cast Aluminum Block
-Natural Gas field convertible to LP as standard equip. except
383-500-400 383-500-402 383-500-403 383-500-404
383-500-401 NA
007
80
PACKAGED BOILER
383-500-405
Natural Gas
Propane Gas
Taco Pump
30 PSI ASME Relief Valve
Drain Valve
0011
Stainless Steel Burner (80, 105 & 310)
with woven steel fiber mesh
(155 & 230)
OPTIONALEQUIPMENT
Wall Mounting Kit
389-900-180
383-500-080
Matching Ultra PLUS 40, 60 and 80 Water Heaters Available
NA
Direct Spark Ignition
Alarm Control Kit
Variable Speed Blower Assembly
Gas/Air Ratio Venturi with Air Silencer
Negative Pressure Regulation Gas Valve
50 VA Transformer
Indirect-FiredWaterHeaters
RATINGS
CSA Input (Maximum)
CSA Input (Minimum)
DOE Heating Cap.
Net I=B=R
80 MBH
16 MBH
71 MBH
62 MBH
93.0%
105 MBH
21 MBH
94 MBH
81 MBH
92.0%
155 MBH
31 MBH
139 MBH
123 MBH
93.0%
230 MBH
46 MBH
207 MBH
183 MBH
92.8%
310 MBH
62 MBH
*289 MBH
252 MBH
*93.3%
Combination T&P Gauge
Outlet Water Temperature Sensor
Return Water Temperature Sensor
Flue Gas Temperature Sensor
Outdoor Temperature Sensor
12 AMP 110 V Circ. Relay (310 only)
Control Module with
DOE AFUE
98.1%
98.0%
95.6%
Weil-McLain Low Temp
Seasonal Efficiency
Boiler return water temp=90°F and boiler outlet water temp=110°F
*Note: 310 ratings are gross output and combustion efficiency.
•Digital Display & Data Port
•Ignition Control
DATA
3 or 4 in.
4 in.
•High Limit & Modulating Temp Control
•Low Water Protection
Vent Size / Material
3” PVC/ABS
PVC/ABS
PVC/ABS
Combustion Air Size
Water Volume
Approx. Ship. Weight
3 in.
1.07 Gal.
154 lbs.
3 or 4 in.
1.57 Gal.
204 lbs.
4 in.
•Outdoor Reset
.95 Gal.
149 lbs.
1.17 Gal.
193 lbs.
2.1 Gal.
254 lbs.
•DHW Priority
•Two Pump Controls
(Heating & DHW)
DIMENSIONS
Supply Tapping
Taco Boiler Circulators:
1”
1”
1-1/4”
1-1/4”
3/4”
•1” flanges (80 & 105) Taco 007
•1” & 1-1/4” flanges (155, 230 & 310)
Taco 0011
Return Tapping
Gas Connection Size
Crate Dimensions
1/2”
56”Lx27”Wx27”H
53-1/2”L x 27”W x 23-1/2”H
Complete Jacket Assembly with
Fully Removable Front Jacket Cover
Adjustable Boiler Legs
Sidewall Vent/Air Termination Kit
Line & Low Voltage
Pre-wired Terminal Strips
On/Off Power Switch
Line Voltage Service Receptacle
Condensate Trap
with Drain Tee Assembly
Propane Conversion Orifice
(All except Model 80)
boilers are low NOx Certified by the
South Coast Air Quality Management District
(Rule 1146.2) in California.
1 Supply Connection
2 Return Connection
3 Low Voltage Wire Opening
4 Electrical Entrance Openings
5 Vent Connection
6 Air Connection
7 Gas Connection
In the interest of continual improvements in product and performance, Weil-McLain reserves the right to change specifications without notice.
Weil-McLain
Locate our Sales Offices by visiting our website:
500 Blaine Street
Michigan City, IN 46360-2388
©2004 Weil-McLain
Weil-McLain Ultra Boiler Patents Pending
Form No. C-995R4(0504)
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