03/12/2019 BI309
Electric
Mini-Boiler
™
Installation & Operating
Instructions
EMB-S-1 120-volt, 1-stage – 1.1 kW 3,753 Btu/h
EMB-S-2 120-volt, 1-stage – 2.5 kW 8,530 Btu/h
EMB-S-4 120-volt, 2-stage – 5 kW 17,060 Btu/h
EMB-S-5 240/208-volt, 1-stage 30A CB 4.5/3.5 kW 15,354/11,942 Btu/h
EMB-S-7 240/208-volt, 2-stage 45A CB 7/5.3 kW 23,885/17,913 Btu/h
EMB-S-9 240/208-volt, 2-stage 60A CB 9/7 kW 30,709/23,885 Btu/h
Water Flow – Minimum 0.3 GPM per kW water flow is required through boiler.
Design Temperature Rise – Typical radiant floor system should be designed at 12° to 15° F.
Application – Low temperature, low pressure, radiant underfloor heating systems. This model includes factory
installed temperature sensing staging.
Comment – If this application is for traditional hydronic heating requiring temperatures greater than 160 F and
capacities larger than shown above, contact factory for other Electro-Boiler product series.
In this approximate sizing the EB-M*-** model series is fully modulating and designed for
temperatures up to 180° F. The EB-M* and EB-W* also have outdoor reset options and other features.
Accessories – Attached BL001 lists various accessory or option items which are not part of basic Electro-Boiler.
Note: This product meets the requirements of the ASME Boiler and Pressure Vessel Code.
Conforms to: UL STD.UL834
Certified to: CSA STD.C22.2#165
DO NOT DESTROY THIS MANUAL. PLEASE READ CAREFULLY AND KEEP IN A SAFE
PLACE FOR FUTURE REFERENCE BY A SERVICE TECHNICIAN.
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