Related Manuals for HVAC Controls Z-2000
Summary of Contents for HVAC Controls Z-2000
- Page 1 Installation Guide Version 2001 Z-2000 MODULATING 20 ZONE SYSTEM Indianapolis, IN 46237...
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Page 3: Table Of Contents
Night Stat ....................7 Economizer ....................7 Heat/Auto/Cool Terminals ............... 7 Zone Damper Actuator Board ................8 Z-2000-T Zone Thermostat Wiring ..............8 Optional wiring for electric duct heater or baseboard electric ....9 Panel Setup ......................10, 11 Switch Congurations ..................10 High and Low Limit Settings ................ - Page 4 Zone Number ..................... 18 Duct Temperature ....................18 Damper Position ....................18 System Status LED Denitions and Functions ................19 Z-2000 Panel ........................19 Actuator Board ........................ 19 Z-2000 Panel Time Delays ......................19 Staging and Limit Control ......................20...
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Page 5: Overview
The Z-2000 is compatible with 2 Heat / 2 Cool conventional or 3 Heat / 2 Cool heat pump systems. All low voltage wiring is 18 gauge thermostat wire and no computer is required to setup, congure or diagnose the system. -
Page 6: Typical Wiring And Layout Guide
5 feet of each branch run. [ ] Bypass dampers should be sized for 90% of the total system CFM. [ ] The Z-2000 panel should be located in an accessible location in the conditioned space and never mounted inside the rooftop unit. -
Page 7: Z-2000 Panel Layout
Z-2000 PANEL LAYOUT 4 AMP 4 AMP SETUP MAJORITY COOLING PRIORITY SYSTEM REV VALVE 3 ZONES CALLS 2 ZONES E HEAT HIGH LIMIT LOW LIMIT W3/AUX/EH REMOVE JUMPER FOR RH - RC 2 AMP 2 AMP 2 AMP 1. Zone 1-12 Thermostat Terminals with Heat/Cool LED Indication 10. -
Page 8: System Wiring
4. All low voltage wire must be 18 gauge. 5. All wiring should be color coded and tagged for proper identication. Z-2000 PANEL WIRING System Power 1. Wire a 24VAC, 75VA transformer to the 24VAC ‘R’ and ‘C’ terminals on the Z-2000 panel. 24VAC 120/208/240/480 VAC TR-75 TRANSFORMER HVAC System 2. -
Page 9: Night Stat
ECONOMIZER Heat/Auto/Cool Terminals The Z-2000 panel has a set of terminals that can be used to place the panel in heating only, cooling only or auto changeover mode. A simple jumper wire can be placed between the COM and H for heat only or, COM and C for cool only mode. If a jumper is not used, the panel is in Auto Changeover. -
Page 10: Zone Damper Actuator Board
Zone Damper Actuator Board Each master zone damper has an actuator board mounted to the side of the damper motor or diffuser. Run 4-wire cable from the Z-2000 panel to each zone actuator board as illustrated. DAMPER OR DIFFUSER MOTOR... -
Page 11: Optional Wiring For Electric Duct Heater Or Baseboard Electric
SYSTEM WIRING ZONE THERMOSTAT WIRING WITH ELECTRIC DUCT HEATER OR BASEBOARD ELECTRIC Z-2000-T with Electric Duct Heater There are two wiring options when using an electric duct heater in a zone. Option1. A DPDT relay can be used to bring on the electric heat and drive the damper open without relocating the duct sensor. -
Page 12: Panel Setup
PANEL SETUP The Z-2000 panel has a row of slide switches that are used to congure the panel for the specic equipment application along with other options. Switch denitions are as follows: SETUP MAJORITY COOLING PRIORITY SYSTEM REV VALVE 3 ZONES... -
Page 13: High And Low Limit Settings
For commercial schedules, 2 events per day is typical. HOW IT WORKS: The Z-2000-NS does not control the HVAC equipment and only uses the ‘G’ fan relay to set the Z-2000 panel in either the occupied or unoccupied mode. This is accomplished by using the Programmable Fan option so that the fan relay is energized during occupied mode (Always On) and de-energized during unoccupied mode (Automatic). -
Page 14: Installer Setup Menu
(Programmable Fan) DAYLIGHT SAVING TIME: The Z-2000-NS default setting compensates for Daylight Saving Time. In areas of the country where DST is not observed, the feature can be disabled by entering Installer Menu 30. Touch the UP or DOWN arrows to change the selection to 0. -
Page 15: Typical 7-Day Schedule
NIGHT STAT SETUP AND SCHEDULING 3. Tap Program again until the minutes flash. Use the UP or DOWN arrow to set the minutes. 4. Tap Program again and the heating setpoint will flash. Leave the setpoint at the factory default. 5. -
Page 16: Zone Thermostat Setup
ZONE THERMOSTAT SETUP SWITCH FUNCTIONS The Z-2000-T contains a set of dip switches numbered 1 through 8. Only dip switches 1, 2, 3, 6 and 7 are active. FACTORY DEFAULT SETTING FOR ALL 1 2 3 4 5 6 7 8 SWITCHES IF OFF . -
Page 17: Entering Setup Menu
Press the SETUP key again and the LCD will display the word UNIT. The factory default is 00. This number can be used to assign the Z-2000-T to a particular HVAC unit. Use the UP and DOWN keys to assign a UNIT number from 00 to 99. (Figure 4) -
Page 18: Setting A Zone Number
This is a critical step in the Z-2000-T setup since the thermostat can be used with a variety of 24 Volt actuators. -
Page 19: Setting The Modbus Address
SAVING SETTINGS AND EXITING THE SETUP MENU Press the ENTER key and the Z-2000-T will save the setup menu settings and exit the program. The LCD will display the space temperature along with other normal operating functions. To review the thermostat settings, simply press and hold the SETUP key until the setup menu is displayed and then toggle through the settings. -
Page 20: Override To Open
The damper will drive closed and remain in the closed position until the override is cancelled. (Figure 13) CANCELLING THE DAMPER OVERRIDE In order for the Z-2000-T to return to normal operation, the override must be cancelled. Press and hold the SETUP key until the word DAMPER OPEN or DAMPER CLOSE appears on the LCD. -
Page 21: System Status Led DeNitions And Functions
Green ON with 3rd stage auxiliary heat or E. Heat. ACTUATOR BOARD LED FUNCTION ON when space temperature drops 1.5° F HEAT below setpoint sending signal to Z-2000 panel. ON when space temperature rises 1.5° F COOL Green above setpoint sending signal to Z-2000 panel. -
Page 22: Staging And Limit Control
STAGING AND LIMIT CONTROL SEQUENCE Discharge Air Temperature Setpoints for Conventional Heating Any time the discharge air temperature goes above the adjustable high limit setting of 145° F to 175° F, stage 1 heat will drop out. Any time the discharge air temperature drops below 135° F, stage 1 heat will come on. Any time the discharge air temperature goes above 125°...
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