Description Of Boiler - DeDietrich 310 ECO Series Installation And Operating Manual

The boiler must not be modified or fitted with non OEM spare parts without the express written approval
of DDR Americas Inc. [De Dietrich Boilers].
2 GENERAL DESCRIPTION OF BOILER
The Gas 310/610 ECO boiler is a fully assembled, free standing, gas fired (natural gas only), fully
modulating, high efficiency condensing boiler and is supplied, plastic wrapped, crated on a pallet.
The sectional cast aluminum heat exchanger and other major components are contained within a rigid
steel frame with removable casing parts for maintenance purposes. The Gas 310/610 ECO frame is fitted
with a set of casters to enable the assembled unit to be easily maneuvered into position within the plant
room on site with minimum effort. All major electrical and electronic controls are contained within the
instrument panel mounted on top of the boiler at the opposite end to the connections facing to the front
(long side).
The boiler is available with flow and return connections on the right hand end of the boiler, with the gas
connection on the top of the boiler. The flue gas outlet c/w a condensate connection will be at low level
on the same side as the connections. Combustion air inlet (from room sealed operation) is located at the
top of the boiler. The front or "service side" of the boiler provides access to the heat exchanger
inspection hatch and other service items, see fig. 02 and fig. 04.
The boiler is suitable for room-sealed or open flue applications and has been designed for central heating
and indirect hot water production at working pressures not exceeding 100 psig [6.8 bar]. It must be
installed on a fully pumped system and is designed for operating pressures between 11 – 100 psig [0.8 –
6.8 bar].The boiler is to be used for indoor installations only.
The pre-mix gas burner (NG only) with its gas/air ratio control system ensures clean, trouble free
operation with higher than average efficiencies of up to 99.9% in the condensing mode combined with
ultra low NO and minimum CO emissions.
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The standard control package allows for external On/Off, High Low (volt free switch/s) or modulating
control (0-10V input). The built in digital display shows normal operating/fault code indication and allows
actual and set values to be read and adjusted.
The intelligent, advanced boiler control ('abc
varying the heat output to suit the system load. The control is able to react to external "negative"
influences in the rest of the system (flow rates, air/gas supply problems) maintaining boiler output for as
long as possible without resorting to a lock out condition. At worst the boiler will reduce its output and/or
shut down (shut off mode) awaiting the "negative" conditions to return to normal before re-starting.
The 'abc®' control cannot override the standard flame safety controls.
All Gas 310/610 boilers are fully test fired after assembly to ensure the boiler and controls comply with
our strict quality policy.
The packaged boiler is constructed and approved according to the following standards:
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ANSI Z21.13 / CSA 4.9
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UL 795
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CGA CAN1-3.1
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ASME Section IV
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CRN for each Canadian Province
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Electrical according CSA 22.2 & NEC/NFPA 70
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Gas Vent Category II & IV – Use vent type BH
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Consult factory for other certifications or qualifications.
De Dietrich Gas 310/610 ECO
(R)
') continuously monitors the boiler operating conditions,
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