Weil Mclain Ultra Series 2 Users Manual Master Catalog 4703

2015-02-02

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Condensing High Efficiency
Gas Boiler
20-100% Modulation

SERIES 2
80
Part No.

105
Part No.

155

230

Part No.

310
Part No.

80
PACKAGED BOILER -Natural Gas field convertible to LP as standard equip. except
Natural Gas 383-500-400 383-500-402 383-500-403 383-500-404 383-500-405
NA
Propane Gas 383-500-401
007
0011
Taco Pump
OPTIONAL EQUIPMENT

Wall Mounting Kit
Alarm Control Kit
Indirect-Fired Water Heaters

RATINGS

CSA Input (Maximum)
CSA Input (Minimum)
DOE Heating Cap.
Net I=B=R
DOE AFUE
Weil-McLain Low Temp
Seasonal Efficiency

DATA

389-900-180
NA
383-500-080
Matching Ultra PLUS 40, 60 and 80 Water Heaters Available
80 MBH
16 MBH
71 MBH
62 MBH
93.0%

155 MBH
230 MBH
310 MBH
31 MBH
46 MBH
62 MBH
139 MBH
207 MBH
*289 MBH
123 MBH
183 MBH
252 MBH
93.0%
92.8%
*93.3%
98.1%
98.0%
95.6%
Boiler return water temp=90°F and boiler outlet water temp=110°F

*Note: 310 ratings are gross output and combustion efficiency.

Vent Size / Material
Combustion Air Size
Water Volume
Approx. Ship. Weight

DIMENSIONS

Supply Tapping
Return Tapping
Gas Connection Size
Crate Dimensions

105 MBH
21 MBH
94 MBH
81 MBH
92.0%

3 or 4 in.
PVC/ABS
3 or 4 in.
1.57 Gal.
204 lbs.

3” PVC/ABS
.95 Gal.
149 lbs.

3 in.
1.07 Gal.
154 lbs.

1.17 Gal.
193 lbs.

1”
1”
1/2”
53-1/2”L x 27”W x 23-1/2”H

4 in.
PVC/ABS
4 in.
2.1 Gal.
254 lbs.
1-1/4”
1-1/4”
3/4”

56”Lx27”Wx27”H

1
2
3
4
5
6
7

Supply Connection
Return Connection
Low Voltage Wire Opening
Electrical Entrance Openings
Vent Connection
Air Connection
Gas Connection

STANDARD EQUIPMENT

Factory Tested
Limited 15 Year Heat Exchange Warranty
Homeowner Protection Plan with
•5 years Parts and Labor
Cast Aluminum Block
30 PSI ASME Relief Valve
Drain Valve
Stainless Steel Burner (80, 105 & 310)
with woven steel fiber mesh
(155 & 230)
Direct Spark Ignition
Variable Speed Blower Assembly
Gas/Air Ratio Venturi with Air Silencer
Negative Pressure Regulation Gas Valve
50 VA Transformer
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
•Digital Display & Data Port
•Ignition Control
•High Limit & Modulating Temp Control
•Low Water Protection
• Outdoor Reset
•DHW Priority
•Two Pump Controls
(Heating & DHW)
Taco Boiler Circulators:
•1” flanges (80 & 105) Taco 007
•1” & 1-1/4” flanges (155, 230 & 310)
Taco 0011
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.

www.weil-mclain.com
©2004 Weil-McLain

Weil-McLain Ultra Boiler Patents Pending

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

In the interest of continual improvements in product and performance, Weil-McLain reserves the right to change specifications without notice.

Locate our Sales Offices by visiting our website:

Condensing High
Efficiency Gas Boiler

Weil-McLain
500 Blaine Street
Michigan City, IN 46360-2388
Form No. C-995R4(0504)

Cast mono block aluminum heat exchanger. Gas
valve, blower and venturi technology that constantly
maintains optimal air and fuel ratio at all firing
rates.

PhD Technology - Precision Hydronic Data
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.

Weil-McLain

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.

PhD Technology is built around proven key components that when combined
make the Ultra the most advanced, reliable and efficient boiler available.
The Ultra Control Module, a microprocessor
electronic control, responds to signals
from the room thermostat, supply water
temperature sensor, return water temperature
sensor, flue temperature sensor, domestic hot
water aquastat, summer/winter switch and
outdoor temperature sensor. The module
automatically adjusts blower speed and gas
flow rate to modulate boiler firing rate to closely
match boiler output for space heating or DHW
heating demand.

The key components
include...
A negative regulated gas valve that
Precisely delivers gas to the boiler;
A variable speed motor that matches
combustion output to your heating needs;

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.

PLUS 40

System intelligence with the Ultra Control
Module which maintains proper, efficient
and Precise Hydronic heat through inputs
of all system Data;

PLUS 60
PLUS 80

The blower, gas valve and venturi all work
in concert to provide the proper fuel and air
mixture for precise combustion. The blower
pulls in air and gas through the venturi. The
air and gas mix inside the blower and are
pushed into the burner for combustion. The
gas valve senses suction from the blower,
allowing gas to flow only if combustion air is
flowing and proper combustion is achieved.

Pre-mix stainless steel burner designed
for perfect firing rate modulation,
efficiency, clean combustion and quiet
operation.

The cast aluminum heat exchanger features
a mono block design. This low mass heat
exchanger heats faster, providing heat to the
system quicker. This aluminum block has
been specifically designed to work in low
return temperature applications in condensing
mode.

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.

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:

A venturi mixing body that Precisely mixes
air and gas providing higher efficiency;

A cast aluminum mono block heat
exchanger designed to operate in low
temperature condensing applications;

High grade stainless steel burner with woven
steel fiber mesh. Burner uses pre-mixed
air and gas providing for a 20% to 100%
modulating firing rate. The Ultra burner
features long life, quiet operation, high
efficiency and cleaner combustion for low
NOx applications.

Boiler

The 4-digit electronic display with
programming buttons and data port make
entering and receiving information very
easy. There are two levels of information:
User Level and Contractor Level. The User
Level is used to: Turn space and DHW
heating “on” or “off”; set space heating
temperature and boiler circulator operation;
display soft and hard lockout codes for easy
troubleshooting. The Contractor Level is
accessible through the use of a special
code that is entered through the front panel
or with a computer interface control kit and a
laptop computer. This access can be used
to customize the Ultra boiler to each specific
job application. Adjustments can be made
for high altitude, outdoor reset, boost timing
and much more...

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.

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.
The Ultra comes with a side mounted service receptacle on
a separate circuit for use with a condensate pump, service
equipment or service light.
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.

The perfect match for an Ultra boiler is an Ultra PLUS IndirectFired 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.