Endurance | Page 3 |
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SECTION 1.
General Information
1A. Introduction
EBP - This appliance is a low pressure, direct vent, hot water boiler that provides priority domestic hot water on demand as well as hydronic space heating system. The unit has a twenty gallon tank which holds boiler water (and is not domestic water storage).
The boiler water is kept hot at all times to provide immediate response to call for heat or domestic water. Domestic water is heated by the boiler water through a stainless steel plate heat exchanger.
EDP/EDN - This appliance is a low pressure, direct vent, cold start hot water boiler that provides heat for hydronic space heating.
Both appliances incorporate a circulating pump and a bypass loop, and provide circulation for the heating system and adequate flow for its own needs. It may be necessary to install a system circulator to achieve the required flow rate through the system.
Both appliances feature a forced draft, premixed combustion system. All air for combustion is supplied with the gas to the burner (flame holder). Both the
intake air and the gas are metered through separate orifices before entering the combustion air blower. The blower forces the air/fuel mixture through the flame holder and into the combustion chamber. The mixture is ignited from the hot surface ignitor and burns. Hot gases are forced out between the passes of the heat exchanger into the flue collector. Flue gases are discharged into the outside atmosphere through the vent terminal.
The appliance can operate with a concentric vent system that will provide outside air for combustion. Other venting arrangements can be provided for the appliance to include an alternative 50 equivalent feet maximum horizontal or condensate trapped vertical vent.
1B. Codes and Standards
The Endurance may be a direct vent or Category IV Boiler. All installations must be made in accordance with:
1.The National Fuel Gas Code, ANSI Z223.1 latest edition, or.
2.CAN/CGA B149 “Installation Codes for Gas Burning appliances and Equipment” and with the requirements of the local utility or other authorities having jurisdiction. Such application requirements take precedence over the general instructions contained herein.
All electrical wiring is to be done in accordance with:.
1.The National Electrical Code ANSI / NFPA70 latest edition or
Figure 1. Combo Heating/Domestic Water (Model EBP). | Figure 2. Heating Unit (Model EDP/EDN). |