Lochinvar Harmony EMS INPUT Default - Setback, Selecting The Output Type, System Startup

SYSTEM STARTUP

---- EMS INPUT	----	ADJUST	Press to
>Setback			select
EMS-Control
		PRESS TO SELECT Setback
---- EMS INPUT	----	ADJUST	or turn
>Setback			to scroll
EMS-Control		PRESS TO SELECT	down
---- EMS INPUT	----	ADJUST	Press to
Setback			select
>EMS-Control		PRESS TO SELECT	EMS

IMPORTANT: Do not select EMS-Controlunless an appropriately configured signal from an EMS system is correctly wired into the Harmony. For additional details, see pg. 5 for wiring, and pg. 28 for EMS-Control setup.

- OUTPUT TYPE A&B	-	ADJUST	Press to
>4-20ma			select
0-10v		PRESS TO SELECT
0-5v			4-20ma
- OUTPUT TYPE A&B	-	ADJUST	or turn
4-20ma
			to scroll
>0-10v		PRESS TO SELECT
0-5v			down
- OUTPUT TYPE A&B	-	ADJUST	Press to
4-20ma			select
>0-10v		PRESS TO SELECT
0-5v			new
- OUTPUT TYPE C&D	-	Repeat
>4-20ma		process for
0-10v		Stages C&D
0-5v

EMS INPUT

Default - Setback

Not available for Reset Sensor Types

Setback

•This default setting allows the Set Point to be adjusted either manually at the panel, or by a Visual Gold upgrade for remote communications.

•If desired, a dry contact switch can be wired across the EMS INPUT terminals SIGNAL and SHIELD to allow the panel to hold a lower temperature Set Point when less load is required. To adjust the amount of Setback, see pg. 19.

•When selecting Setback, there is no requirement for any wiring across the EMS INPUT terminals. DO NOT select EMS-Control unless your system meets the requirements below.

External Set Point (4-20mA EMS-Control)

•For this option, an EMS system must provide a 4-20mA signal to automatically change the Set Point based on pre-programmed system parameters.

•An active signal must be wired into the EMS Harmony terminals. If the Harmony does not receive a signal between 3.9mA and 20.1mA, it will NOT activate any stages.

•If your system meets the above two criteria, see pg. 28 to complete the EMS-control setup.

SELECTING THE OUTPUT TYPE

•The Harmony has two output cards, one for stages A & B, and one for stages C & D.

•Both output cards must be programmed for the appropriate mode of operation.

•Outputs can be configured for 4-20mA operation (current) or the voltage range can be selected (0-5V, 0-10V, 1-5V, 2-10V).

•Check the modulating motor to determine its control requirements.

•Select the appropriate Output Type for stages A & B. The Harmony will then automatically bring up the screen for stages C & D.

•Select the appropriate Output Type for stages C & D.

•If different types of burners are being used, stages C & D can be selected to have a different Output Type than stages A & B.

-MODULATING MODE >NORMAL

PARALLEL

-MODULATING MODE NORMAL

>PARALLEL

-MODULATING MODE NORMAL

>PARALLEL

ADJUST

PRESS TO SELECT

ADJUST

PRESS TO SELECT

ADJUST

PRESS TO SELECT

Press to

select

Normal

or turn

to scroll

down

Press to

select Parallel

SELECTING THE MODULATING MODE Default - Normal

•Most boilers run more efficiently as their modulation increases. Therefore, for most systems, it is more energy efficient to run one boiler in high than several boilers at lower modulation. If your system is of this type, select Normal.

•There are some systems were it may be more energy efficient to run several units at lower modulation than one at high. If that is the case select Parallel.

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