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Lochinvar Harmony Installation And Operation Manual

Lochinvar water heaters and boilers installation and operation manual
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INSTALLATION & OPERATION MANUAL
This manual attempted to be complete and accurate at the time of publication. Additional upgrades and new features may change
Harmony functions. Upgrades to this manual may occur at any time. Contact the factory for further details.
Lochinvar
HARMONY
T T T T T ABLE OF CONTENTS
ABLE OF CONTENTS
ABLE OF CONTENTS
ABLE OF CONTENTS
ABLE OF CONTENTS
Function Chart................................................pg. 2
Harmony Overview......................................pg. 3
Panel Installation.........................................pg. 4
Using the Menus.....................................pg. 10
System Startup ........................................pg. 11
Operating Settings.....................................pg. 14
System Settings...........................................pg. 17
Stage Settings............................................pg. 22
Reset Settings............................................pg. 25
Troubleshooting.......................................pg. 27
Appendix.....................................................pg. 28
Index..............................................................pg. 30
Specifications................................................pg. 32
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Summary of Contents for Lochinvar Harmony

  • Page 1: Table Of Contents

    Specifications...pg. 32 This manual attempted to be complete and accurate at the time of publication. Additional upgrades and new features may change Harmony functions. Upgrades to this manual may occur at any time. Contact the factory for further details. Lochinvar HARMONY ®...

  • Page 2: Function Chart

    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. Depress the button to go back through the menus, or to view a...

  • Page 3: Harmony Overview

    Automatic Rotation among Stages Rotating the first stage to be activated on a call for output promotes even wear on each stage. The Harmony has three modes of rotation: Manual, First ON/First OFF, or automatically each time period which can be adjusted from every hour to every 7 days.

  • Page 4: Panel Installation

    • 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. Ambient operating temperature is from 20 to 120°F. • Remove the panel from the metal enclosure by removing the top center screw and loosening the two bottom screws.
  • Page 5 PROVE 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.
  • Page 6 Harmony activate boilers and modulate them as required to hold the temperature set point. • If the SYSTEM PROVE input is open on a call, the Harmony will enable only the System Output. All Stage outputs will be off when the SYSTEM PROVE input is open.
  • Page 7 Shade 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.
  • Page 8 • Each output stage (A through D) which is to be used must have a relay installed in the socket. The SYS relay is included with the Harmony. • To install a relay, orient the pins and then press it gently into the appropriate socket.
  • Page 9 Current Stage D WIRING TO VOLTAGE MODULATING MOTORS • The Harmony can be equipped to operate up to four 0-5 V, 0-10V, 1- 5V, or 2-10V modulating motors. • Apply the supplied label marked Voltage below the output terminals. • The output boards are connected on the rear of the panel.

  • Page 10: Using The Menus

    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. Set Point/Gain/Lead Stage Settings - These settings might need occasional adjustment by operating personnel.

  • Page 11: System Startup

    Reset °F Reset °C SYSTEM STARTUP STARTUP 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.
  • Page 12 SELECTING THE OUTPUT TYPE or turn • The Harmony has two output cards, one for stages A & B, and one down for stages C & D. • Both output cards must be programmed for the appropriate mode of operation.
  • Page 13 In Process mode, the Harmony will react immediately to load changes. Large load changes may cause stages to be short cycled, as the Harmony can enable and disable stages within seconds. After making this selection, the main display screen will be displayed.

  • Page 14: Operating Settings

    Turn to SET POINT DISPLAY adjust • The Set Point is the temperature value the Harmony will use to value control the system. • The Harmony will either increase the amount of modulation, decrease the amount of modulation, or maintain the same amount of modulation to maintain the system temperature around the Set Point.
  • Page 15 3 x Gain Below Set Point GAIN/THROTTLE OPERATING MODE - NORMAL • 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.
  • Page 16 SETTINGS Press to ADJUST Gain >Lead Stage setting PRESS TO SELECT <Stage Settings> --- LEAD STAGE ---- Turn to ADJUST >A PRESS TO SELECT --- LEAD STAGE ---- Press to ADJUST >B PRESS TO SELECT LEAD STAGE Used to manually change the lead stage show •...

  • Page 17: System Settings

    B, C, or D). Time • On power up, or any time the Harmony loses power, the Lead Stage will be the lowest stage in Auto Mode (that is, A first, then B, C, or • If the default 24 hour rotation is used, at 2 am every morning, the Lead Stage will change to the next stage in Auto Mode.
  • Page 18 PRESS TO SELECT Lst on • On power up, or any time the Harmony loses power, the Lead Stage will be the lowest stage in Auto Mode (that is, A first, then B, C, or • The Lead Stage will always be the first stage brought on and modulated when there is a call for output.
  • Page 19 Default - 0 • Setback is not available in the Reset, or 4-20mA EMS-Control mode. • The Setback feature can be used to provide the Harmony with a lower temperature Set Point when less load is required. • The lower Set Point will appear on the main display indicating this condition.
  • Page 20 Turn to change to the next stage in Auto Mode. Note: If you do not set the adjust system time (see pg. 21), the Harmony will assume it was installed at value 2 pm. • The Rotate Time is adjustable in one hour increments from 1 hour to 168 hours (7 days).
  • Page 21 Password will expire 15 minutes after the last change has been made. Using the Default Password • The Harmony has a built in default Password - MMOD. • Enabling the default Password will prevent most unauthorized users from adjusting the settings, but will not prevent Lochinvar service personnel, or anyone else with access to this manual, from adjusting the panel.

  • Page 22: Stage Settings

    • 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.
  • Page 23 - STAGE SETTINGS - Press to ADJUST Mode >Ignition % setting PRESS TO SELECT Mod Start % ----- STAGE ------ Turn to ADJUST IGNITION POINT adjust Value -> New Value PRESS TO SELECT ----- STAGE ------ Press to ADJUST IGNITION POINT select Value ->...
  • Page 24 Modulating Mode - PARALLEL • The Modulation Point should be set to the value where the unit runs most efficiently. • Contact the manufacturer to determine the appropriate setting. COPY SETTINGS - STAGE A ONLY • If all the active Stages will have the same Ignition Start Point and Modulation Point, they can be set for Stage A and then copied to the other Stages.

  • Page 25: Reset Settings

    1.5:1 • The other Reset Ratios are adjustable from 1:4 to 4:1. • The Reset Ratio curves start at 70°F. At 70°F the Harmony will require 100°F water. Note that this is not the point where the Harmony will begin giving heat. That point is determined by the Outdoor Cutoff (next page).
  • Page 26 Temperature setting at the Harmony's sensor to meet the boiler's requirements. • The Harmony will use the Minimum Water Temperature as the Set Point whenever it is higher than the calculated value determined by select the outdoor temperature, Reset Ratio, and Offset.

  • Page 27: Troubleshooting

    Red stage light is not lit, but the unit is on The Harmony is not calling for this unit to be active. Remove any wires attached to the Harmony output. Check for continuity across the N.O. contacts. If there is no continuity, the Harmony output is working correctly. Check the unit for any other operating controls which may be causing it to energize.

  • Page 28: Appendix

    • In the EMS-INPUT menu, press the ADJUST/SELECT knob to select EMS-Control. • The next screen is EMS 4ma Setpoint. This screen allows you to set the desired Harmony Set Point when the EMS input is 4mA. The temperature range of the selection is from 100 to 240°F. Rotate the ADJUST/SELECT knob until the desired value is selected and then press the knob.
  • Page 29 MOVING AROUND THE STAGES MENUS • Pressing the STAGE button allows you to automatically scroll though the Stage A, B, C, and D Settings. • Pressing the NEXT button automatically moves you through the adjustments for each stage. For example, after viewing the Ignition Point, pressing the NEXT button will move you to the Modulation Start.

  • Page 30: Index

    Symbols 4-20mA EMS Input. See External Set Point 4-20mA Motors Wiring 9 Baseboard applications 25, 26 Copy Settings 24 Display Main 14 None or Garbled 27 OPN 27 SHT 27 External Set Point 5, 12, 14, 19 Setting the Range 28 Gain Normal 15 Process 15...
  • Page 31 Sensor Outdoor 7 Selecting Type 11 System 4 Temperature. See Temperature sensor Set Point 14 Setback 7, 19 SHT 27 Shutdown 5, 19 Stage Ignition Point 23 Mode 22 Modulation Start 23 Testing 27 Standby Time 19 Startup Getting the Menu 28 Sequence 11 System Output 8 Testing 27...

  • Page 32: Specifications

    Last Stage Hold... 0 to 30°F (0 to 30°C) Shutdown Input... Dry Contact Only System Prove Input... Dry Contact Only Boiler Active Inputs... Dry Contact Only 4-20mA External Input Only Available on Temperature Units Harmony can source or sink current 1°F (1°C)

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