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MODEL EM-10
ELECTRIC BOILER CONTROL
OPERATION AND INSTRUCTION MANUAL
The EM-10 Boiler Temperature Control (BTC) is an efficient
boiler operator with a digital LCD display with backlight, a
boiler pump output, an alert output, and four stage outputs.
The control regulates the boiler based upon setpoint, outdoor
reset, and several options for external boiler control.
Features:
• Setpoint Operation
• Outdoor Reset with Reset Override
• Four Stage Outputs
• External Control through BMS Signal
• External Control through Tekmar Boiler Controls
• Boiler Pump Operation
• Parallel Piping
• Primary – Secondary Piping
• Display Backlight
See Service Manual (792840000) for:
• Tekmar 275 and other External Direct Drive
Operation
• Two Setpoint Operation
• Dedicated DHW and Parallel Operation
• External Target/ Setpoint Operation
Publication No. EM-10-40
Printed in U.S.A. 914
Part No. 792820000
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Table of Contents
Summary of Contents for Slant/Fin EM-10
- Page 1 MODEL EM-10 ELECTRIC BOILER CONTROL OPERATION AND INSTRUCTION MANUAL The EM-10 Boiler Temperature Control (BTC) is an efficient boiler operator with a digital LCD display with backlight, a boiler pump output, an alert output, and four stage outputs. The control regulates the boiler based upon setpoint, outdoor reset, and several options for external boiler control.
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Page 2: Table Of Contents
Symbols in seconds of keypad inactivity. Once in a menu, there will be the status field are only visible when the View menu is a group of items that can be viewed within that menu. selected. EM-10-40 Operation and Instruction Manual... -
Page 3: Display And Symbol Description
Displays when the control is in Warm Displays operation as indicated by the text. Weather Shut Down. DEMAND 1 °F or°C °F,°C Displays when a call for heat on demand Displays the temperature units. 1 is present. EM-10-40 Operation and Instruction Manual... -
Page 4: Modes Of Operation
Boiler Inlet Sensor (Included) The piping arrangement determines which sensor the control uses as the operating sensor. The operating sensor is either the boiler outlet sensor or the boiler supply sensor. EM-10-40 Operation and Instruction Manual... - Page 5 “Setpoint Operation” for a description of setpoint operation. Mode 5 Mode 4 Outdoor Outdoor Sensor Sensor Relay Relay Factory Factory Installed Installed Boiler Boiler Outlet Outlet Sensor Sensor Secondary Piping Sensor (Included) Boiler Inlet Sensor (Optional) Boiler Inlet Sensor (Included) EM-10-40 Operation and Instruction Manual...
- Page 6 The minimum on time is adjustable through the MIN ON setting in the Adjust menu. EM-10-40 Operation and Instruction Manual...
- Page 7 B oil MIN Boil MIN B oil MIN High Heat Load B oil S TAR T OUTDR DS GN WWS D WWSD WWS D Heat Load Decreasing Outdoor Air Temperature OUTDR S TAR T EM-10-40 Operation and Instruction Manual B oil MAX...
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Page 8: Setpoint Operation
10 seconds. This minimizes the possibility of the pump seizing during a long period of inactivity. ALERT The control closes the alert contact whenever an error message is present. B oil MAX B oil MIN WWS D EM-10-40 Operation and Instruction Manual... -
Page 9: Outdoor Reset Operation
The OUTDR START temperature is the outdoor air B oil MIN temperature at which the control provides the BOIL START water temperature to the system. The OUTDR START is typically set to the desired building temperature. WWS D EM-10-40 Operation and Instruction Manual... -
Page 10: Installation
120 V (ac) must be applied across the CD (common demand) and the Set D (setpoint demand) pins. Caution: The same power supply must be used for both the heat demand and setpoint demand circuits since they share the CD (common demand) pin. EM-10-40 Operation and Instruction Manual... -
Page 11: Control Settings
Stage 4 heating element(s) on. Boil 1234 The boiler pump and stages 1 Step 6 to 4 are shut off. The alert is closed for 10 seconds. The control exits the test sequence and resumes normal operation. EM-10-40 Operation and Instruction Manual... -
Page 12: Mode 4 And 5 - Outdoor Reset / Setpoint Operation
Note: An external relay is required to operate the DHW pump and provide DHW priority if required by disabling pump and provide DHW priority if required by disabling the the boiler pump. system pump or zone pumps. EM-10-40 Operation and Instruction Manual... -
Page 13: View Menu
The total number of running hours of the boiler since 0 to 999 Factory this item was last cleared. Clear the numbers of hours while viewing this item. After the last item, the control returns to the first item in the menu. EM-10-40 Operation and Instruction Manual... -
Page 14: Default Settings
BOILER OUTLET MAXIMUM 120 to 225°F Select the maximum boiler outlet Factory (49 to 107°C) temperature. Exceeding this temperature shuts off the boiler. Continued on next page. EM-10-40 Operation and Instruction Manual... -
Page 15: View Menu
0:10 to 4:00 min Factory to allow the next stage to turn off. Note: This setting is only available when STAGE MODE is set to P. Continued on next page. EM-10-40 Operation and Instruction Manual... - Page 16 TEMPERATURE UNITS Factory °F or °C Select to display temperature in degrees Installer Fahrenheit or in degrees Celsius. After the last item, the control returns to the first item in the menu. EM-10-40 Operation and Instruction Manual...
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Page 17: Error Messages
32°F (0°C) and continues operation. Test the outdoor sensor and related wiring. The error message will clear once the error condition is corrected and a button is pressed. EM-10-40 Operation and Instruction Manual... -
Page 18: Reload Factory Defaults
RELOAD FACTORY DEFAULTS To reload FACTORY DEFAULT SETTINGS, press and hold the outside buttons (Item and Down) while powering the control up. This will reload the FACTORY DEFAULTS. EM-10-40 Operation and Instruction Manual... - Page 19 EM-10-40 Operation and Instruction Manual...
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Page 20: Specifications
Outdoor Sensor 070 (S/F P/N 339070000) Factory Installed: — Universal Sensor 071 Publication No. EM-10-40 • Printed in U.S.A. 914 • Part No. 792820000 SLANT/FIN CORPORATION, Greenvale, N.Y. 11548 • Phone: (516) 484-2600 FAX: (516) 484-5921 • Canada: Slant/Fin , Mississauga, Ontario LTD/LTEE www.slantfin.com...