Lochinvar Harmony - Manual (Page 2)

2
Harmony Function Chart
Green Ground
screw must be
connected to
Earth Ground
120VAC
Power
System Output
controls pumps,
valves or other system
components
Each N.O. output is
wired in series with
each unit's limit circuit 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.
One output relay is required for
each stage.
If input is not made,
the Harmony will not
consider it an active
stage*
To Temp sensor mounted
in common header
When closed, all stages
are turned off*
* DRY CONTACTS ONLY
** Only available with the Remote Communications package
Checks status of system
components*
Depress the knob to move
forward through the menus and to
accept changes, rotate the knob
to change a setting's value
Depress the button to go back
through the menus, or to view a
setting value without changing it
The digital display shows the system status,
set point, lead stage , and
status of each stage. To view and adjust
settings, press the Adjust/Select button
FULL MODULATION
SEQUENCING CONTROL
HARMONY
MADE IN U.S.A.
PREV.
10 9 8 7 6 5 4 3 2 1 11 12
SAFETY
GROUND
MUST BE
CONNECTED
SYS
SYSTEM
TEMP
SHUTDOWN
SYSTEM
PROVE
MENU FUNCTIONS
SELECT enters menus or accepts changes
ADJUST selects menu items or changes settings
BACK returns to previous menu
STAGE selects stage menus or next stage
PREV/NEXT steps through stage settings
STAGE
A
STAGE
B
STAGE
C
STAGE
D
SYSTEM A B C D
LI
N
E
NE
UT
RAL
A B C D
OPERATING LIMIT
OUTPUTS
MODULATION OUTPUTS
STAGE HELP NEXT
PRESS TO
SELECT
BACK
181
B C D
100 52 OFF STBY
A B C D
C
C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12
ADJUST
T
+
S
INPUTS
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
BURNER
ACTIVE
B1
B2
B3
B4
B5
B6
B7
B8
A11
A12
OUTDOOR
TEMP
T Optional sensor enables
outdoor reset
DO NOT APPLY ANY VOLTAGE
TO SENSOR TERMINALS
EMS INPUT
+
SIGNAL
SHIELD
Provides remote set
point adjustment with
a 4-20mA signal
To network sensors** NETWORK