Chapter 4: Ufly Setup And Programming; Indoor/Outdoor Reset Mode; Wiring Connections - Watts AERCO EXT Installation, Operation & Maintenance Manual

Modulex ufly controller & bcm

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Ufly Controller and BCM for Modulex EXT

CHAPTER 4: UFLY SETUP AND PROGRAMMING

The following sections provide the detailed set-up and programming procedures necessary to

configure the Modulex Boiler for service operation.

NOTE: When performing the following operating mode set-up procedures, refer to Chapter 3 of

this document for illustrations and descriptions of the Controller operating controls and displays.

Refer to Chapter 5 for Controller wiring connections.

This mode is used to adjust the boiler set point based on the outdoor air temperature. The

supply heating curve can be customized using the Outdoor Reset parameter in the Heating

Menu . The outdoor air sensor provided with the Modulex boiler must be installed to enable this

mode of operation. The following sections provide the procedures necessary to wire and

configure the controller for operation in the Indoor/Outdoor Reset mode.

The outdoor air sensor provided with the boiler should be mounted on the outer North or North-

East side of the building away from windows, doors and vents. Never mount the outdoor air

sensor in a location where it is exposed to direct sunlight.

There is no polarity to observe when connecting the wire leads.

Connect outdoor air sensor (PN 95000926) to Input/Output box, connector Y2, terminals 6 & 7.

NOTE: The same set of terminals are used for outdoor air sensor and 0-10V remote setpoint

input. The functions of these terminals are set through Parameter 799 in the Device

Management Menu. For outdoor air sensor, Parameter 799 = 1 (default value). For 0-10V

remote setpoint input, Parameter 799 = 2 – see Section 4.3 for details.

OMM-0159_A_A • 6/28/2022

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