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User manual HONEYWELL TB7980
Diplodocs help download the user guide HONEYWELL TB7980 .
This product, although classified under the brand HONEYWELL, may have been manufactured by ADEMCO, DOMONIAL, ENVIRACAIRE, FBII, FISHER PRICE, GALAXY, INTELLISENSE, RELI ON after mergers, acquisitions, or a change in name.
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Manual abstract: user guide HONEYWELL TB7980
Detailed instructions for use are in the User's Guide. TB6980/TB7980
Installation and User Guide
ZonePRO Thermostat
1. Introduction
The TB6980/TB7980 digital thermostats provide proportional plus integral individual space temperature control in zoned commercial HVAC systems such as hydronic and pressure dependent VAV with or without reheat. There are four different models:
· TB7980A (single output, modulating) · TB7980B (multiple output modulating) · TB6980A (single output, floating) · TB6980B (multiple output, floating)
Configuration and status display
Heating mode Cooling mode Temperature display Output power display
Depending on the model, the thermostat can have up to three outputs that can be used for the following applications: Floating or Modulating damper/valve actuator control Damper/valve actuator control with duct reheat and auxiliary heat (B models only) Hydronic systems (room control, perimeter heating and cooling) Accessories R841 family of electromechanical relays T7770A3002 remote room sensor 50014156-002 remote room sensor 32004800-001 bare thermistor 50014157-001 duct temperature sensor
Temperature adjustment button Override button
2. Installation
2.1 Mounting Instructions
Remove the thermostat from its base by unscrewing the captive screw and tilting the bottom of the thermostat up. The screw cannot be completely removed.
2.2 Terminal Designations
The designations of the terminals vary according to the particular model of thermostat. Refer to the following table for the description of each terminal. TERMINAL 1 2 3 4 3 4 5 6 7 8 24 VAC COM AN1 COM OPEN CLOSED T2/AN2 T2/COM T3 T3 DESCRIPTION Power supply TB7980 models Output 1 TB6980 models Output 2 (TB6980B and TB7980B models) Output 3 (TB6980B and TB7980B models)
Pass the wires through the center hole of the base and secure the base to the wall or onto an electrical box. Wire the thermostat. See section 2.2 for terminal designations and section 3 for typical wiring diagrams. Reinstall the thermostat onto its base and secure with the captive screw.
9 COM External sensor input. (For applications requiring 10 SENSOR an external sensor, see section 4.2.) 9 COM 11 C-Over 9 COM 12 NSB Mode Changeover input (N.O. contact). See section 5.4.2. Night Setback activation input (N.O. contact). See section 5.5.
Note: To configure the terminals, see section 4.
TB6980/TB7980
62-0238
400-150-005-B
3/23/06
1/6
3. Typical Applications
TB7980B TB6980B
FIGURE 1: Damper control with electric reheat and auxiliary baseboard heating. TB7980B
FIGURE 2: Damper control with electric reheat and auxiliary hot-water heating TB6980B
FIGURE 3: Damper control with automatic changeover, electric reheat and central cooling TB7980B
FIGURE 4: Temperature control of fresh air supply TB7980B
CAUTION Do not connect common to ground
CAUTION Do not connect common to ground
FIGURE 5: Changeover and NSB inputs sharing the same 24-Vac transformer
FIGURE 6: Changeover and NSB inputs using different 24-Vac transformers
TB6980/TB7980
62-0238 400-150-005-B
3/23/06
2/6
4. Configuration
4.1 Configuration Menus (See following pages for explanations)
NOTE: Factory settings are inside the shaded cells.
TB7980A model
Remove the thermostat from its base and set the SW2 switch to MENU. Reinstall the thermostat. The thermostat is now in configuration mode. The first digit flashes to indicate that the first item of the menu can now be modified. To modify the setting, use the up/down arrows. Refer to the adjacent tables. Press Override to save the new setting and go to the next item. Repeat steps 3 and 4 for remaining items. When the configuration is done, set the SW2 switch back to NORMAL.
ABBREVIATIONS NSB - Night setback (number of degrees the thermostat will be set back upon receiving a setback signal) SSR - Solid state relay (used with fast cycling electric heaters, SSR's are a quiet alternative to electromechanical relays. They're typically included with electric duct reheat equipment) SCR - Silicon controlled rectifier (similar to an SSR, SCR's are also quiet and capable of switching very high current. If used, they're usually included with the equipment) N.C. - Normally closed N.O. - Normally open
Application (section 4.2) 0 1 2 3 4 5 Internal sensor Room Return Supply Auto changeover Limited cooling
Default mode & Output 1 type (section 4.3.1) 0 Cool / 0-10V 1 Heat / 0-10 V 2 Cool / 2-10 V 3 Heat / 2-10 V
NSB value (section 5.5) 1 2 3 4 5 6 7 8 9 1°C (2°F) 2°C (4°F) 3°C (6°F) 4°C (8°F) 5°C (10°F) 6°C (12°F) 7°C (14°F) 8°C (16°F) 9°C (18°F) 0 1 2 3 4 5
Output 1 min. opening (section 4.3.2) 0% 10% 20% 30% 40% 50%
Maximum setpoint (section 4.6) Can be set between 35°C (95°F) and ''minimum setpoint + 1'' Default value is 35°C (95°F)
Minimum setpoint (section 4.6) Can be set between 10°C (50°F) and ''maximum setpoint - 1'' Default value is 10°C (50°F)
TB6980A model
Application (section 4.2) 0 1 2 3 4 5 Internal sensor Room Return Supply Auto changeover Limited cooling 0 1
Default mode (section 4.3.1) Cool Heat 1 2 3 4 5 6 7 8 9
NSB value (section 5.5) 1°C (2°F) 2°C (4°F) 3°C (6°F) 4°C (8°F) 5°C (10°F) 6°C (12°F) 7°C (14°F) 8°C (16°F) 9°C (18°F) 0 1 2 3 4 5
Output 1 min. opening (section 4.3.2) 0% 10% 20% 30% 40% 50%
0 1 2 3 4 5 6 7 8
Output 1 opening time (section 4.3.3) 80 90 100 110 120 130 140 150 160
Maximum setpoint (section 4.6) Can be set between 35°C (95°F) and ''minimum setpoint + 1'' Default value is 35°C (95°F)
Minimum setpoint (section 4.6) Can be set between 10°C (50°F) and ''maximum setpoint - 1'' Default value is 10°C (50°F)
TB7980B model
Application (section 4.2) 0 1 2 3 4 5 Internal sensor Room Return Supply Auto changeover Limited cooling
Default mode & Output 1 type (section 4.3.1) 0 Cool / 0-10V 1 Heat / 0-10 V 2 Cool / 2-10 V 3 Heat / 2-10 V
Output 2 typea (section 4.4) 0 1 2 3 4 5 6 7 8 Not used SSR 24 VAC N.C. Valve N.O. Valve Mech. relay SSR 3-32 V SCR 0-10 V Act. 0-10 V Act. / 2-10 V 0 1 2 3 4 5
Output 3 type (section 4.5) Not used SSR 24 VAC N.C. Valve N.O. Valve Mech. relay Contact 0 1 2 3 4 5 6 7 8 9
Output 3 activation (section 4.5) 100% 10% 20% 30% 40% 50% 60% 70% 80% 90%
NSB value (section 5.5) 1 2 3 4 5 6 7 8 9 1°C (2°F) 2°C (4°F) 3°C (6°F) 4°C (8°F) 5°C (10°F) 6°C (12°F) 7°C (14°F) 8°C (16°F) 9°C (18°F) 0 1 2 3 4 5
Output 1 min. opening (section 4.3.2) 0% 10% 20% 30% 40% 50%
Maximum setpoint (section 4.6)
Minimum setpoint (section 4.6)
Can be set between 35°C (95°F) and ''minimum setpoint + 1'' Default value is 35°C (95°F)
Can be set between 10°C (50°F) and ''maximum setpoint - 1'' Default value is 10°C (50°F)
a.
If Output 2 type is set to 0-4, set the SW6 switch to Triac. If the output type is set to 5-8, set the switch to Analog (see section 4.7). TB6980B model
Application (section 4.2) 0 1 2 3 4 5 Internal sensor Room Return Supply Auto changeover Limited cooling
Default mode (section 4.3.1) 0 1 Cool Heat 0 1 2 3 4 5 6 7 8
Output 2 typea (section 4.4) Not used SSR 24 VAC N.C. Valve N.O. Valve Mech. relay SSR 3-32 V SCR 0-10 V Act. 0-10 V Act. / 2-10 V 0 1 2 3 4 5
Output 3 type (section 4.5) Not used SSR 24 VAC N.C. Valve N.O. Valve Mech. relay Contact
Output 3 activation (section 4.5) 0 100% 1 10% 2 20% 3 30% 4 40% 5 50% 6 60% 7 70% 8 80% 9 90%
NSB value (section 5.5) 1 2 3 4 5 6 7 8 9 1°C (2°F) 2°C (4°F) 3°C (6°F) 4°C (8°F) 5°C (10°F) 6°C (12°F) 7°C (14°F) 8°C (16°F) 9°C (18°F) 0 1 2 3 4 5
Output 1 min. opening (section 4.3.2) 0% 10% 20% 30% 40% 50%
Output 1 opening time (section 4.3.3) 0 80 1 90 2 100 3 110 4 120 5 130 6 140 7 150 8 160
Maximum setpoint (section 4.6) Can be set between 35°C (95°F) and ''min setpoint + 1'' Default value is 35°C (95°F)
Minimum setpoint (section 4.6) Can be set between 10°C (50°F) and ''max setpoint - 1'' Default value is 10°C (50°F)
a.
If Output 2 type is set to 0-4, set the SW6 switch to Triac. If the output type is set to 5-8, set the switch to Analog (see section 4.7).
TB6980/TB7980
62-0238
400-150-005-B
3/23/06
3/6
4.2 Application Types
The following table shows the different thermostat applications and their corresponding settings in the configuration menu.
Menu setting 0 1 Internal sensor Room Description To control the ambient temperature using the internal (built-in) sensor To control the ambient temperature using the 50014156-002 temperature sensor (the internal sensor is not used) To control the temperature at the air return using the 50014157-001 temperature sensor (the internal sensor is not used) To control the temperature at the fresh air supply using the 50014157-001 temperature sensor (the internal sensor is not used) To control the ambient temperature using the internal sensor. The 50014157-001 temperature sensor is used for automatic changeover. See section 5.4.1. To use the outdoor air for cooling whenever possible. The 50014157-001 temperature sensor is used to measure the outdoor air temperature. The internal temperature sensor measures the room temperature which is then compared with the setpoint. If the room temperature is lower than the setpoint, the air intake damper remains closed. If the room temperature is higher than the setpoint, the latter is then compared with the outdoor temperature. If the fresh air temperature is lower than the setpoint by more than 3°C (5.4°F), the damper opens to allow cool air in.
The following table shows the different default modes, the different output types for Output 1, and their corresponding settings in the configuration menu.
Menu setting 0 1 2 3 TB7980 models Cool / 0-10 V analog (max. of 10 min. refresh) Heat / 0-10 V analog (max. of 10 min. refresh) Cool / 2-10 V analog (max. of 10 min. refresh) Heat / 2-10 V analog (max. of 10 min. refresh) TB6980 models Cool (24 V tri-state floating) Heat (24 V tri-state floating)
2
Air return
4.3.2 Minimum Opening
The minimum damper opening can be set between 0 and 50 %. Note: It is not recommended to set the minimum damper opening to 0 % (fully closed) when a duct heater is connected to Output 2 or 3.
3
Air supply Automatic changeover
4
4.3.3 Opening time (TB6980 models only)
The damper opening time can be set between 80 and 160 seconds.
4.4 Output 2 (models TB6980B and TB7980B)
Output 2 controls heating only, regardless of the thermostat's mode. When the thermostat is in heat mode, Output 2 is activated as soon as Output 1 reaches its full capacity. When the thermostat is in cool mode, Output 2 is activated when the measured temperature drops below the setpoint.
5
Limited cooling
4.3 Output 1
Output 1 is used to control a damper. It controls heating when the thermostat is in heat mode or cooling when the thermostat is in cool mode.
The following table shows the output types for Output 2 and their corresponding settings in the configuration menu.
Menu setting 0 1 2 3 4 5 6 7 8 Description Not used 24 VAC pulsed (triac) / 1 sec. cycle 24 VAC pulsed (triac) / 10 min. cycle / direct action (e.g., N.C. thermal valve) 24 VAC pulsed (triac) / 10 min. cycle / reverse action (e.g., N.O. thermal valve) 24 VAC pulsed (triac) / 15 min. cycle (e.g., mechanical relay such as R841) 0-10 V pulsed / 1 sec. cycle 0-10 V analog / 1 sec. refresh (e.g., SCR controlled device such as a re-heater) 0-10 V analog / max. of 10 min. refresh (e.g., valve) 2-10 V analog / max. of 10 min. refresh (e.g., damper)
Set the following configuration parameters: · · · · Default mode Output type (TB7980 models only) Minimum opening Opening time (TB6980 models only)
4.3.1 Default Mode / Output Type
The default mode (heat/cool) is used for the following: · The default mode is the thermostat's mode at power-up. · The default mode is the active mode when the N.O. changeover contact is open (see section 5.4.2). · When configured as a contact (see section 4.5), Output 3 controls either heating or cooling depending on whether the default mode is set to heat or cool respectively.
TB6980/TB7980
Note: If 0-4 is selected, set the SW6 switch to Triac. If 5-8 is selected, set the switch to Analog (see section 4.7)
62-0238
400-150-005-B
3/23/06
4/6
4.5 Output 3 (models TB6980B and TB7980B)
The following table shows the output types for Output 3 and their corresponding settings in the configuration menu.
Menu setting 0 1 2 3 4 5 Description Not used 24 VAC pulsed (triac) / 1 sec. cycle 24 VAC pulsed (triac) / 10 min. cycle / direct action (e.g., N.C. thermal valve) 24 VAC pulsed (triac) / 10 min. cycle / reverse action (e.g., N.O. thermal valve) 24 VAC pulsed (triac) / 15 min. cycle (e.g., mechanical relay such as R841) N.O. contact (The contact closes when Output 1 reaches or exceeds set percentage. See section 4.1.)
4.7 DIP Switches
Three switches at the back of the control module are used to select various options. Temperature Display (SW1) Selects the desired temperature display (°C or °F). Access Mode (SW2) Selects the operation mode (NORM) or the config ...
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