Specification Sheet

Gas Supply Pressure
Natural Gas Propane
Min. Max. Min. Max.
3.0" w.c. (0.7 kPa) 13.5" w.c. (3.3 kPa) 5.0" w.c. (1.2 kPa) 13.5" w.c. (3.4 kPa)
6.2.2 Combustion air blower shall be equipped with a variable speed blower to regulate the
amount of premix gas/air through the blower assembly and into the burner. The on board
control system shall regulate the speed of the blower to modulate the capacity of the boiler
from 20% input ring rate up to 100% input ring rate.
6.2.3 Gas Burner shall be constructed of a stainless steel mesh.
6.2.4 Ignition system shall consist of a direct spark igniter (DSI) and separate ame sensing rod.
7.0 Control System
7.1 Boiler Control System. Boiler shall feature an integrated modulating control. The control shall
sense the supply water, return water and outside air temperatures and adjusts the ring rate to
deliver the amount of heat needed to the structure.
Boiler Control System must consist of:
• Replaceable fuse /extra spare fuse shipped with the control.
• User interface with LCD screen display English text—boiler status indication .
• Function Programming Keys - Reset, Menu, Enter and arrow s (+ - ).
• Central Heating CH and Domestic Hot Water DHW set points. Domestic hot water priority
with programmable maximum priority time .
• Outdoor air sensor. Programmable reset curves and warm weather shutdown or xed
water temperature operation.
• Boost function temperature setting and adjustable boost time.
• Maximum power function to restrict ring rate in heat mode but allow full power in DHW
mode.
• Integral multiple boiler control capability up to 16 boilers. Requires an optional system
sensor
• Service reminder status display on the user interface with programmable settings in a
range of 1 to 999 days
7.1.1 The control system shall continuously monitor the boiler during operation and standby
modes. The control shall operate in such a manor to receive input data from the supply,
return and outdoor air temperature sensors and adjust the modulation rate accordingly.
7.1.2 The Boiler’s control system shall consist of the following safety devices factory installed
on the boiler: high limit temperature sensor, vent temperature sensor, heat exchanger
temperature limit, UL Listed, probe type Low Water Cut Off (LWCO).
8.0 Primary Secondary Piping System
8.1 The boiler shall be equipped with an internal primary loop and pump.
8.2 The internal primary loop piping system will contain a manually operated ball valve. The valve
shall be set by the factory in the full open position.
ECR International, Inc.
2201 Dwyer Avenue, Utica NY 13501
Tel: [phone]
P/N 240010475 REV C, [04/2015]