Overview of Primary Product

Engineering
the
ideal AquaBalance of comfort
Input MBH AHRI Certified Ratings
Model
1
Max. Min.
DOE
heating
capacity
MBH
2
Seasonal
eciency
AFUE %
Net
water
rating
MBH
3
Vent
outlet
diameter
(Inches)
4
Vent material
Boiler
water
content
(Gallons)
Approx.
shipping
weight
(Lbs.)
WMB-155C 155 15.5 143 94.4 124 3 PVC, CPVC, PP, SS .75 87
1
Natural gas field convertible to LP with optional kit.
2
Based on standard test procedures prescribed by the United States Department of
Energy. MBH refers to thousands of Btu per hour.
3
Net AHRI ratings are based on net installed radiation of sufficient quantity for the
requirement of the building and nothing needs to be added for normal piping and pick-
up. Ratings are based on piping and pick-up allowance of 1.15. An additional allowance
should be made for unusual piping and pick-up loads.
4
Boilers must be vented directly to the outdoors. See boiler manuals for details.
In the interest of continual improvement in product and performance, Weil-McLain
reserves the right to change specifications without notice.
• Factory tested
• Stainless Steel primary
heat exchanger
• Mounting bracket
and hardware
• Spark ignition
• Outdoor sensor
• Honeywell control
• T & P gauge
• 3-prong power cord
• Water treatment inhibitor
and test kit
• Condensate drain
• Relief valve
• 3-in-1 Vent adapter
• Low NOx SCAQMD compliant
• DHW flat plate heat exchanger
• 3-speed circulator
OPTIONAL EQUIPMENT:
• Propane conversion kit
• Concentric vent kit
• Condensate neutralizer
STANDARD EQUIPMENT:
1) Heating system supply tapping: 1” NPT
2) Domestic hot water outlet: ¾” NPT
3) Gas connection: ½” NPT
4) Cold water supply: ¾” NPT
5) Heating system return tapping: 1” NPT
6) Air connection: 3” PVC, PP*, CPVC, AL 29-4C SS
7) Flue connection: 3” PVC, PP*, CPVC, AL 29-4C SS
COMBI Connections
Bottom Top
Front
*Fits Simpson-Duravent, additional adapter needed for Centrotherm