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heat-timer DIGI-SPAN VSP Elite Installation And Operation Instructions Manual

Elite series, variable speed pump control, injection pump control for hydronic heating in outdoor reset or set point applications
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INSTALLATION AND OPERATION INSTRUCTIONS
Variable Speed Pump Control
Injection Pump Control for Hydronic Heating in
Outdoor Reset or Set Point Applications
®
SYSTEM =
TARGET =
SYS
DECREASE
INCREASE
Boiler
Pump
SET
Display Section Locking Screws
This Heat-Timer control is strictly an operating control; it should never be used as a primary limit or safety control. All
equipment must have its own certified limit and safety controls required by code. The installer must verify proper operation
and correct any safety problems related to the installation of this Heat-Timer control.
This control must be installed by a licensed electrician.
VSP DIGI-E
Black (120VAC power)
147F
150F
DHW
SYSTEM
Pump
R
C O R P O R A T I O N
Elite Series
®
The DIGI-SPAN VSP Elite establishes ambient
comfort by varying the temperature of the Secondary
Loop's circulating hot water in response to changes
in the loop temperature. The temperature of the
heating water is controlled by regulating the speed
of a pump which injects water from a hot Boiler
2 Line Alphanumeric Display
Loop (Primary Loop) into a cooler heating loop
Displays sensor values and
menu settings
(Secondary Loop). As the speed of the pump
increases, more hot water is sent into the Secondary
Loop resulting into warmer water temperature.
Output Lights indicate
The VSP Elite can be used as an outdoor reset
output status
control. The VSP can also be used as a set point
control. In this mode of operation, the VSP will
control the injection pump speed to hold a constant
temperature (determined by the user) in the
Yellow (System Output)
Secondary Loop. In addition, it provides an outdoor
temperature based cutoff and system pump control.
Three new features have been added to this control.
A customized reset ratio curve for specialized
Injection Pump Output
buildings , a manual pump speed control to manually
adjust the pump speed based on a well balanced
White
system, and a minimum pump speed adjustment to
allow for pump operation at all heating levels.
WARNING
lItE

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Summary of Contents for heat-timer DIGI-SPAN VSP Elite

  • Page 1 WARNING This Heat-Timer control is strictly an operating control; it should never be used as a primary limit or safety control. All equipment must have its own certified limit and safety controls required by code. The installer must verify proper operation and correct any safety problems related to the installation of this Heat-Timer control.
  • Page 2 Two sensors are used for outdoor reset, one to monitor the outdoor temperature, 1:4 1:3 1:1.5 and one to monitor the Secondary Loop circulating hot water temperature. When 12 11 the outdoor temperature falls below outdoor cutoff setting, the heating system is 1:1.25 activated and the Secondary Loop hot water temperature is increased proportionally to satisfy the load.
  • Page 3 S.P.S.T. Output Wiring 120VAC Power Wiring ® Wiring Power Input SYSTEM 147F TARGET 150F The VSP Elite is designed to accept 120VAC using the two Black wires. Heat-Timer BLACK Boiler DECREASE INCREASE Pump SYSTEM Pump recommends the installation of a Surge Suppressor and a Power Switch before the Power N.O.
  • Page 4 Output Wiring Output Wiring Output Wiring WHITE OPEN. Floating YELLOW N.O. N.O. N.O. ORANGE Motorized Wiring the Enable/Disable (EXT+, EXT-) Valve Enable/Disable N.O. Input Terminals BLUE • The EXT± terminals can be used to enable or disable the system by connecting it to a thermostat, external Wiring CLOSE control, or a switch.

  • Page 5: Piping Design

    VSP Digi-Elite Installation & Operation Manual Piping Design When designing an injection systems, it is eminent that the Boiler Loop and the Secondary Loop are completely isolated. This can be achieved by following these simple rules (see Injection Piping Rules on page 5.): •...
  • Page 6 Injection Pump Selection Table Injection Injection Glove Valve/Balancing Pump Size Valve % Flow Rate Loop Pipe Valve/Circuit Setter (or equivalent permanent split capacitor Opening (GPM) Size (Inches) Size (Inches) pump) 0 - 3.5 ½" ½" Taco 007, Grundfos U15-42, B&G NRF-22 4 - 5.5 ½"...
  • Page 7 VSP Digi-Elite Installation & Operation Manual Menus Startup Menu HEAT-TIMER CORP. DIGI-SPAN ELITE Loading Default DISPLAY UNIT: V1.00 c 2008 Values... Default Screen CONTROL MODE: SETUP COMPLETE! SENSOR FAULT: SYSTEM= 68 F Outdoor Reset PRESS SET Output On TARGET= 150 F...

  • Page 8: Startup Options

    Startup Options When the control is initiated for the first time or after a manual reset, it will start its operation with the Startup Menu. Later, the Startup menu can be accessed as an option from the operation menu. An option must be accepted in each screen in the Startup Menu to move to the next level.

  • Page 9: Default Display

    VSP Digi-Elite Installation & Operation Manual Setting the Control to Factory Default To Reset the VSP Elite control to its original factory defaults, power down the control. Hold down the SET and DOWN buttons while powering the control back up until the Loading Default Values screen appears.
  • Page 10 Operating Menu Options To enter the menus, press the Set button Set Point and Reset Set Point Set Point: Options: From -10ºF/-23ºC to 230ºF/110ºC Default: 70ºF/21ºC 70 F 140 F /Set Point (Available when Startup Control Mode = Set Point) SYSTEM= 148 F •...
  • Page 11 VSP Digi-Elite Installation & Operation Manual Offset Offset: Options: From -40ºF/-22ºC to +40ºF/+22ºC Default: 0ºF/0ºC +0 F /<Out. Reset>/Offset (Available when Startup Control Mode = Outdoor Reset) • The Offset setting lets you adjust the starting points of the Reset Ratio curves. This means Offset=10°F Min Target=120°F Reset Ratio=1.5 : 1.0...
  • Page 12 Gain Gain: Options: From -10 to +10 Default: 0 /Settings>/Gain • The Gain adjusts the aggressiveness of the VSP Elite PID logic. It controls the amount of change in the speed of Injection Pump when the Secondary Loop temperature differs from the Set Point. It is based on he rate of change.
  • Page 13 Default: 0Fº/0Cº +0 F BLACK /<Maintenance>/Sys. Trm, Out. Trim, or Ret. Trim • The Heat-Timer temperature sensors are very accurate. However, sometime it might be beneficial N.O. 120VAC Power Source Outdoor Trim: to adjust the values to match and existing system. The System, Outdoor, and Boiler Return Sensor...

  • Page 14: Troubleshooting

    Troubleshooting No Display or LED Lights Check the power to the VSP Elite. The VSP Elite requires 120VAC power to the Black wires. Turn the power off and back on to restore the display. If unsuccessful, make sure the Display Cover of the control is securely mounted to the Base. System or Outdoor Reads OPEN or SHORT If Open, short the sensor input terminals.
  • Page 15 C O R P O R A T I O N 120 VAC NOTE: The diagrams are conceptual only. Secondary Loop Heat-Timer is aware that each installation /System Pump is unique, however, the diagrams in (Yellow) this document are to represent control operation concept.

  • Page 16: Specifications

    ....3 LEDs (Left=Decrease/Close Middle=Increase/Open Right=System Relay) 20 New Dutch Lane, Fairfield, NJ 07004 973-575-4004 • Fax 973-575-4052 • http://www.heat-timer.com C O R P O R A T I O N...

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