LAARS EBP 175 MBTU/h - Installation, Operation and Maintenance Instructions - Manual (Page 3)

Endurance Page 3
SECTION 1.
General Information
1.1 Introduction
The EBP Endurance is a low pressure, direct
vent, hot water boiler that provides priority domestic
hot water on demand as well as hydronic space
heating. The unit has a twenty gallon tank which holds
boiler water (as opposed to 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.
This appliance has a circulating pump and a
bypass loop, and provides 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.
This appliance also features 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
Figure 1. Combo Heating/Domestic Water
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.
1.2 Codes and Standards
The Endurance may be a direct vent or Category
IV Boiler. All installations must be made in accordance
with:
a. The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 latest edition, or
b. CSA B149.1 Natural Gas and Propane
Installation Code.
c. The requirements of the local utility or other
authorities having jurisdiction take precedence
over the general instructions contained herein.
All electrical wiring is to be done in accordance with:.
a. The National Electrical Code (NFPA 70), latest
edition or
b. The Canadian Electrical Code (CSA C22.1),
latest edition.
c. All applicable local installation codes must also
be adhered to.
All vent installations must be made in accordance with:
a. The applicable venting requirements of the
National Fuel Gas Code (ANSI Z223.1/NFPA
54), latest edition; or
b. in Canada, The Natural Gas and Propane
Installation Code (CSA B149.1), latest edition.
All applicable provisions of local building codes
should also be adhered to.
1.3 Unpacking the Appliance
Remove all packing and tie down materials.
Make immediate claims (to the carrier) if the appliance
and its packaging are damaged.