Instruction/ maintenance manual of the product Harmony Lochinvar
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1 Function Chart................................................pg. 2 Harmony Overview ......................................pg. 3 Panel Installation.........................................pg. 4 Using the Menus.....................................pg.
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 .
3 Harmony Overview Sequences up to 4 Fully Modulating Stages The Harmony is the perfect control whenever multiple fully modulating stages are required. The Harmony controls the on/ off and the modulation of each stage to maintain precise set point control.
4 INST ALLA TION MOUNTING THE ENCLOSURE • Select a location near the equipment to be controlled. • The surface should be flat, and be sufficiently wide and strong to hold the Harmony . • Keep the Harmony panel away from extreme heat, cold, or humidity .
5 CONNECTING AN EXTERNAL SET POINT (4-20mA EMS-CONTROL) • The Harmony can take a 4-20mA signal from an Energy Manage- ment System (EMS) or other signal source to change the set point remotely (see pg. 28 for additional details). • The signal must be a two-wire 4-20mA.
6 • The System Prove feature is provided to check system component operation. • A typical use of this feature is to check for flow before firing any boiler stages. When there is a call for heat, the System Output activates the system pump starter .
7 WIRING A SETBACK • The Setback feature can be used to provide the Harmony with a lower temperature Set Point when less load is required. • A typical use for Setback is to lower the system temperature during the night or on the weekends when a building is unoccupied, but a minimum level of heat is still required.
8 10 9 8 7 6 5 4 3 SYS A B C 2 1 LINE NEUTRAL N.O. contacts to activate a pump, valve or other system componen t WIRING THE SYSTEM OUTPUT System Output Operation in Set Point Mode • The SYS output relay will energize whenever there is a call for output and the Shutdown feature is not active.
9 Wiring the Stage Outputs • Each Stage output ( A through D ) has one Normally Open (N.O.) relay contact. • The N.O. contacts are dry contacts only . They do not source any voltage. • Each N.O. contact is capable of switching 6A resistive at 120V AC.
10 USING THE MENUS MENU TYPES System Startup Settings - determines the type of system. For example, the system is a hot water heating system with 0-10V modulating motors. If the Startup Settings are not correct, the Harmony can not operate the system correctly .
11 SYSTEM ST ARTUP ST ARTUP SEQUENCE • The series of initialization screens appears on the left. The Harmony will automatically step through the screens. • When powered, the Harmony performs a self test on its compo- nents. • After the self test diagnostics have been successfully completed, the Harmony will initialize the panel.
12 - MODULATING MODE >NORMAL PARALLEL - MODULATING MODE NORMAL >PARALLEL - MODULATING MODE NORMAL >PARALLEL PRESS TO SELECT ADJUST Press to select Normal PRESS TO SELECT ADJUST or turn to scr.
13 SELECTING THE OPERA TING MODE Default - Normal • Most heating applications do not experience rapid changes in system temperature. For these systems, it is best to adjust the modulation based on the rate of system rise or fall.
14 OPERA TING SETTINGS CHANGE SET POINT , GAIN, LEAD ST AGE THE MAIN DISPLA Y • The main display screen may have different values in the top two lines depending on the application. • The third line shows the four stages. The Lead Stage will be in brackets.
15 GAIN/THROTTLE OPERA TING MODE - NORMAL Default = 0 • The Gain adjusts the PID logic in the Harmony to control how much modulation is changed when the system temperature is different from the Set Point. • A Gain of 0 is a good starting point for all systems.
16 LEAD ST AGE Used to manually change the lead stage • The Lead Stage is the first stage brought on when output is required. • The Lead Stage can be rotated manually or automatically . The automatic rotation is recommended (see pg. 17). • The current Lead Stage is shown in brackets on the main display .
17 SYSTEM SETTINGS THE SYSTEM SETTINGS MENU • These are general settings which affect all Stages and overall operation. • The Harmony will generally operate satisfactorily with the default settings. However , it is recommended that each of these settings be checked on Startup to tune the Harmony to the particular system.
18 Lst on • On power up, or any time the Harmony loses power , the Lead S tage will be the lowest stage in Auto Mode (that is, A first, then B, C, or D). • The Lead Stage will always be the first stage brought on and modulated when there is a call for output.
19 ST ANDBY TIME Default - 10 min • The Standby Time only applies to Stages in Standby Mode. • A Standby Stage can only be activated after all the Stages in Auto Mode have run at 100% modulation for the full Standby Time. • Standby Stages are used for backup up or extreme load conditions only .
20 ROT A TE TIME Default 24hr • The Rotate Time only takes effect if the Auto Rotate type is Time (see pg. 17). • The default value is 24 hours and is appropriate for most systems. W ith 24 hour rotation, at 2 am every morning, the Lead Stage will change to the next stage in Auto Mode.
21 --- LOGIN --- Enter password: M*** --- LOGIN --- Enter password: M*** --- LOGIN --- Enter password: MM** PRESS TO SELECT ADJUST Turn to adjust Letter 1 PRESS TO SELECT ADJUST Press to select Letter.
22 ST AGE SETTINGS INDIVIDUAL ST AGE ADJUSTMENTS THE ST AGE MENU • In most installations, all Stage adjustments are the same, but each of the four output Stages can be configured differently if desired. • If the stages are not set up properly , the Harmony operation may appear to be erratic.
23 IGNITION POINT Default - 1% When Can a Stage Begin Modulating? • The Ignition Point is the percent modulation which must be attained before the unit can be activated.
24 Modulating Mode - P ARALLEL • The Modulation Point should be set to the value where the unit runs most efficiently . • Contact the manufacturer to determine the appropriate setting.
25 RESET SETTINGS RESET RA TIO Default 1:1 • The Reset Ratio controls how much heat will be added based on outdoor temperature. The Reset Ratios are shown as Outdoor T emperature:W ater T emperature. • A 1:1 Reset Ratio signifies for each degree it gets colder outside, the Calculated water temperature will raise 1 degree.
26 • In a new installation, start with an Offset value of 0°. • Adjust the Offset value in mild weather . If the ambient indoor temperatures are warm in the warm weather , decrease the Offset. If the ambient building temperatures are cold in the mild weather , increase the Offset.
27 TROUBLESHOOTING No Display , or Garbled Display Check the 120V AC power input to the Harmony . T urn power to the Harmony off and back on. TEMPERA TURE INPUTS Display shows OPN Check the System Startup settings (pg. 11) to be sure the Harmony is configured correctly to read the temperature input.
28 APPENDIX SYSTEM ST ARTUP MENU • On the initial start-up, the Harmony will automatically step through the System Startup. After that, it must be reached through the menu system. • DO NOT make changes to the System Startup unless you have carefully checked the installation.
29 MOVING AROUND THE ST AGES MENUS • Pressing the ST AGE button allows you to automatically scroll though the S tage A , B , C , and D Settings . • Pressing the NEXT button automatically moves you through the adjustments for each stage.
30 Index Symbols 4-20mA EMS Input. See External Set Point 4-20mA Motors W iring 9 B Baseboard applications 25, 26 C Copy Settings 24 D Display Main 14 None or Garbled 27 OPN 27 SHT 27 E External Set P.
31 INDEX INDEX INDEX INDEX INDEX S Sensor Outdoor 7 Selecting T ype 1 1 System 4 T emperature. See T emperature sensor Set Point 14 Setback 7, 19 SHT 27 Shutdown 5, 19 Stage Ignition Point 23 Mode 22 .
32 HARMONY SPECIFICA TIONS Input V o lt age .......................................................................120V AC Power Consumption ...............................................................30V A Lead Stage Rotation Manual First On/First Off Automatically .
An important point after buying a device Lochinvar Harmony (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lochinvar Harmony yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lochinvar Harmony - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lochinvar Harmony you will learn all the available features of the product, as well as information on its operation. The information that you get Lochinvar Harmony will certainly help you make a decision on the purchase.
If you already are a holder of Lochinvar Harmony, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lochinvar Harmony.
However, one of the most important roles played by the user manual is to help in solving problems with Lochinvar Harmony. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lochinvar Harmony along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
