Lochinvar operation manual Harmony Function Chart, Full Modulation, Sequencing Control

Harmony Function Chart

	Depress the knob to move
	forward through the menus and to
	accept changes, rotate the knob
The digital display shows the system status,	to change a setting's value
	Depress the button to go back
set point, lead stage <in brackets>, and
status of each stage. To view and adjust	through the menus, or to view a
settings, press the Adjust/Select button	setting value without changing it

	FULL MODULATION
	SEQUENCING CONTROL
	HARMONY					TO SENSOR TERMINALS
						DO NOT APPLY ANY VOLTAGE
							INPUTS
MENU FUNCTIONS					ADJUST		A1	T SYSTEM	To Temp sensor mounted
							A2	TEMP	in common header
SELECT enters menus or accepts changes			181				A3		When closed, all stages
								SHUTDOWN
ADJUST selects menu items or changes settings					PRESS TO		A4		are turned off*
BACK returns to previous menu	<A>	B	C	D	SELECT		A5	+
STAGE selects stage menus or next stage	100	52	OFF	STBY			A6	S
					BACK
PREV/NEXT steps through stage settings							A7	NETWORK	To network sensors**
							A8
							A9	SYSTEM Checks status of system
							A10	PROVE	components*
	HELP	PREV.	STAGE	NEXT			A11	T OUTDOOR	Optional sensor enables
							A12	TEMP	outdoor reset
					BURNER		B1	STAGE
						ACTIVE
							B2	A

SYSTEM

A

B

C

D

B3

STAGE

If input is not made,

EMS INPUT

B4

B

the Harmony will not

B5

STAGE

consider it an active

B6

C

stage*

+ SIGNAL

B7

STAGE

SHIELD

B8

D

1

2

3

4

5

6

7

8

9

10

11

12

C1

C2

C3

C4

C5

C6

C7

C8

C9

C10

C11

C12

							C				Provides remote set
											point adjustment with
SAFETY							A	B	C	D	a 4-20mA signal
	LINE	NEUTRAL
GROUND			SYS	A	B	C	D	MODULATION OUTPUTS
MUST BE					OPERATING LIMIT
CONNECTED
					OUTPUTS
MADE IN U.S.A.
Green Ground		System Output				One output relay is required for
screw must be		controls pumps,
							each stage.
connected to		valves or other system
Earth Ground		components

120VAC	Each N.O. output is
Power	wired in series with
	each unit's limit circuit

*DRY CONTACTS ONLY

**Only available with the Remote Communications package

The modulation outputs can be 0-5V, 0-10V, 1-5V, 2-10V, or 4-20ma.Different output boards mount on the back of the Harmony and determine the type of output.

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