Packaged VAV Control System

Star Zone 4000 as manufactured by Zone-All Control Systems Inc., see drawing for number and size.
The unit shall operate in occupied or unoccupied mode as defined by the Master controller's internal time clock.

Features:

  • Modulating dampers
  • Dampers shall drive to full open position during times of no demand to maximize the space ventilation rate.
  • Automatic static pressure controlled by-pass dampers.
  • Starcom Hub interface and software for connection to owner supplied computer.

Components Schedule

  • Master control panel SZM4000
  • Transformers, 24VAC, 40VA
  • Discharge outdoor temperature sensor, model TOA
  • Thermostats Model SZT4000
  • Model AVD zone dampers
  • Model RAD by-pass dampers

Control Sequence

Occupied Mode:
The circulation fan shall operate continuously.

Cooling
The Starzone 4000 system shall interface to the AHU such that on a call for cooling from the Master controller:
Less than 13C (55F)

  • The fresh air damper shalll open under control of the AHU's mixed air economizer to maintain a 13C discharge air temperature

    • Greater than 13C (55F)

  • The fresh air damper shall go to it's minimum position (adjustable) and the mechanical cooling shall be energized in stages by the Zone All system.

    • Heating
    During a heating demand from the Starzone 4000 Master controller the AHU will stage the heat under the control of the SZM-4000 Master.

    Unoccupied Mode:
    The space temperature will be set back to 16C (61F). The circulating fan will normally be off and the fresh air damper will close.

    Starcom Hub
    The control system will be connected to an owner supplied computer with internet access via a Starcom Hub interface. The software will be capable of but not limited to the following:

  • Trend Logging
  • Remote access via the internet
  • Problem diagnostics
  • Remote adjustment of thermostat set points
  • Remote adjustment of minimum and maximum position of zone dampers during heating, cooling and ventilation cycles.

    • On site programming and check out of control system to be provided by Zone All factory authorized personnel.

    Heating and Cooling HVAC Unit (Secondary Heating by Perimeter Radiation)

    Star Zone 4000 as manufactured by Zone-All Control Systems Inc., see drawing for number and size.
    The unit shall operate in occupied or unoccupied mode as defined by the Master controller's internal time clock.

    Features:

    • Modulating dampers
    • Dampers shall drive to full open position during times of no demand to maximize the space ventilation rate.
    • Automatic static pressure controlled by-pass dampers.
    • Starcom Hub interface and software for connection to owner supplied computer.

    Components Schedule

    • Master control panel SZM4000
    • Transformers, 24VAC, 40VA
    • Discharge outdoor temperature sensor, model TOA
    • Thermostats Model SZT4000
    • Model AVD zone dampers
    • Model RAD by-pass dampers

    Control Sequence

    Occupied Mode:

  • The circulation fan shall operate continously.
    • Cooling:
  • On a call for cooling from the StarZone 4000 controller, the discharge air controller is disabled and the gas valve is turned off.
    If the outside air temperature (OAT) is:
    • Less than 13C (55F) - The outside air (OA) damper shall open under the control of AHU's mixed air thermostat to achieve a 13C (55F) mixed air temperature. Mechanical cooling shall be locked out by AHU's internal controls.
    • Greater than 13C (55F) - The OA damper shall go to its minimum position and the mechanical cooling shall be energized in stages by the Zone-All system.
    • Heating
    • The gas burner shall be controlled by a discharge temperature control such that 19C (68F) (adjustable) discharge is maintained during times of no cool demand. During times of heat demand from the Star Zone 4000 controller, the discharge temperature control shall be bypassed allowing the gas valve to open to meet the demand.
    • The TOA (outdoor air sensor) supplied by Zone-All shall enable the system to lock out the heating demand capability of the HVAC unit at temperatures above 18C (65F) adjustable and to lock out the heating capability of the secondary radiant heating at temperatures above -15C (5F) (adjustable).
    Unoccupied Mode:
    • The setpoint temperature shall be set back to 16C (61F) (adjustable) and the AHU will not respond to a cooling call. The circulating fan will normally be off and the OA damper shut.
    • Every perimeter zone's hot water/electric radiation is to be controlled by the zone thermostat. Electric baseboard relay/transformers are to be supplied by the baseboard provider.
    Model STA Stand Alone Damper

      Star Zone 4000 as manufactured by Zone-All Control Systems Inc., see drawing for number and size.
      The unit shall operate in occupied or unoccupied mode as defined by the Master controller's internal time clock.
      Features:

    • Modulating dampers
    • Dampers shall drive to full open position during times of no demand to maximize the space ventilation rate.
    • Automatic static pressure controlled by-pass dampers.
    • Starcom Hub interface and software for connection to owner supplied computer.

    Components Schedule

    • Master control panel SZM4000
    • Transformers, 24VAC, 40VA
    • Discharge outdoor temperature sensor, model TOA
    • Thermostats Model SZT4000
    • Model AVD zone dampers
    • Model RAD by-pass dampers

    Control Sequence

    Occupied Mode:
    • The circulation fan shall operate continously.
      • Cooling
    • On a call for cooling from the StarZone 4000 controller, the discharge air controller is disabled and the gas valve is turned off.
      If the outside air temperature (OAT) is:
      • Less than 13C (55F) - The outside air (OA) damper shall open under the control of AHU's mixed air thermostat to achieve a 55F mixed air temperature. Mechanical cooling shall be locked out by AHU's internal controls.
      • Greater than 13C (55F) - The OA damper shall go to its minimum position and the mechanical cooling shall be energized in stages by the Zone-All system.
    Heating
    • The gas burner shall be controlled by a discharge temperature control such that 19C (68F) (adjustable) discharge is maintained during times of no cool demand. During times of heat demand, the Star Zone 4000 controller shall control the radiant heat via the auxiliary heat relay.
    • The TOA (outdoor air sensor) supplied by Zone-All shall enable the system to lock out the heating demand capability of the control system at temperatures above 18C (65F) (adjustable).
    Unoccupied Mode:
    • The temperature will be set back to 16C (61F) (adjustable) and the AHU will not respond to a cooling call. The circulating fan will normally be off and the OA damper shall close..
    Applications
    1. Whenever a HVAC system has a single thermostat located in a central area and peripheral areas experience hot and cold cycles - use the STA to control these other areas. If they are on an outside wall, use the STA-HR and interface a duct coil or baseboard heater with the thermostat.
    2. Any building that has a cooling only system and spot zone control is required - the STA is the answer.
    3. If various zones in the building all want individual control of the HVAC unit, i.e., have the capability of turning the HVAC system to heating or cooling, refer to the Starzone 4000 VVT system.
    Packaged Pressure Dependant Stand Alone Damper
    1. Zone-All model STA, VAV controller as manufactured by Zone-All Control Systems Inc. See drawing for number and size.
    2. Features:
      • Fully modulating VAV damper control.
      • Electronic thermostat complete with LCD display indicating heat, cool or ventilation cycle.
      • Software logic to allow for maximum ventilation.
      • Model STA thermostat shall have a built-in relay to allow control of radiant baseboard heating and shall have a selection switch to allow the VAV damper to open to 50% whenever in-duct heaters are used rather than baseboard heaters.
      • Test mode switch shall enable operator to easily check system operation manually. No special service devices will be required.
    3. VAV dampers shall be manufactured using 22 gauge spiral pipe. The damper blade shall be a 60 degree elliptical sandwich construction with neoprene edging to provide a positive seal. 90 degree round dampers will not be accepted.
    4. Wiring shall be low voltage, 5 conductor, 18 gauge to 22 gauge.