EE-RM-TP-99-470 COMMENT 02CC

Issues on Packaged Heating Boilers 

as Discussed in the 

Notice of Proposed Rulemaking 
EE-RM-TP-99-470 COMMENT 02CC

Definitions and Scope of Coverage 

ethod of Assembly - DOE proposes a definition under which 

boilers are covered whether they are factory assembled, 

assembled with manufacturer-specified components, or 

assembled with components not specified by the manufacturer. 

Application - DOE proposes the rule would apply to all 

commercial boilers distributed, to any significant extent, for use 

in buildings for heating and space conditioning and service 

water heating. 

Capacity - DOE proposes the rule would apply to boilers with 

rated capacity > 300,000 Btu/h, with no upper limit. 

, Operating Characteristics - DOE proposes the rule would 

include both low pressure and high pressure (operating 

pressure greater than 15 psig) packaged boilers. 
EE-RM-TP-99-470 COMMENT 02CC

Test Procedure and Test Conditions 

Low Pressure Boilers 

DOE proposes that a manufacturer could choose to use either 

the Hydronics Institute HI-1989 standard or the simplified 

efficiency test method of ASME PTe 4.1, with certain specified 

inlet and outer water temperatures for hot water boilers. 
EE-RM-TP-99-470 COMMENT 02CC

Test Procedure and Test Conditions 

High Pressure Boilers 

DOE proposes that a manufacturer would use the simplified 

efficiency test method of ASME PTe 4.1, with provisions for 

steam pressure or hot water outlet temperature (of hot water 

boilers) as specified by manufacturer's normal design point 

operating conditions. 
EE-RM-TP-99-470 COMMENT 02CC

Test Procedure and Test Conditions 

Boilers Designed for Low Water Temperature Applications 

DOE proposes that a manufacturer would use the Hydronics 

Institute HI -1989 standard for all low pressure steam and hot 

water boilers. No special provision for boiler water inlet and 

outlet temperatures. 
EE-RM-TP-99-470 COMMENT 02CC

Test Procedure and Test Conditions 

Condensing Boilers 

DOE proposes that a manufacturer would use the Hydronics 

Institute HI -1989 standard for condensing boilers, with special 

provision made for boiler water temperature, and use of the 

steady state test method for flue condensate measurement as 

specified in ASHRAE standard 103-1993. 
EE-RM-TP-99-470 COMMENT 02CC

Test Procedure and Test Conditions 

Modular Boilers and Multiple Boilers 

• DOE proposes modular boiler system with identical individual 

modules/boilers of less than 400,000 Btu/h input that rating be 

based on test results for one module. 

• For multiple boiler systems, DOE proposes if the individual 

boilers in the system are of different design/make/model, each 

different design is considered to be a separate packaged boiler 

and rated individually. 
EE-RM-TP-99-470 COMMENT 02CC

Test Procedure and Test Conditions 

Steam and Hot Water Boilers 

• DOE proposes that a manufacturer must rate a boiler designed 

for both steam and hot water applications, based on testing as 

a steam boiler. 

• As an option, DOE would allow manufacturers to also rate the 

boiler in the hot water mode, based on testing as a hot water 

boiler.