RenewAire TC7D Series Digital Time Clock
Supplemental Installation Manual for Accessories
TC7D-W (Wall Mount)
TC7D-E (Enclosure)
Diagram Descriptions
TC7D-W Wall Mount: A diagram showing the front view of the wall-mounted unit with a central digital display and four buttons. It includes mounting hole indicators and the RenewAire logo.
TC7D-E Enclosure: A diagram illustrating the enclosed unit, presenting a more detailed view of the digital display, buttons, and internal wiring connections within a larger protective enclosure.
Safety Information
⚠️ WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING RULES:
- Use the unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.
- Before installing, servicing or troubleshooting the transformer/relay package, switch power off at service panel and lock service panel to prevent power from being switched on accidentally.
❗ CAUTION
- More than one disconnect switch may be required to de-energize the equipment for servicing.
- Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards.
- When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
- NEVER place a switch where it can be reached from a tub or shower.
- Intended for use with 24VAC Class 2 power supplies only.
- Do not connect loads that exceed the timer's switch rating.
- Confirm sufficient 24VAC power is available to operate the timer and the connected loads.
Overview and Specifications
Note: When the time comes to replace the battery, use a coin to remove the battery cover to avoid stripping the plastic cover.
Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 24VAC 50/60Hz |
| Switching | Single Pole, Single Throw [SPST] (can be field-modified to Single Pole, Double Throw [SPDT]) |
| Power Consumption | 3.5VA |
| Battery Backup | CR2032 lithium battery back up for the timer; battery needs to be replaced approximately every 2-3 years. |
| Switch Rating | 16 Amps at 131°F |
| Operating Temperature Range | 32°F–140°F |
| Connections | (3) 16 GA pigtails (wire nuts not provided) |
Functional Description of Buttons
- TIMER: Programs review & setting programs
- MANUAL ON AUTO OFF: To select "ON", "AUTO", or "OFF"
- CLOCK: To adjust current DAY and TIME
- DAY: To adjust day of week
- HOUR: To adjust Hour
- MIN: To adjust minute
- [Reset Button]: Reset Timer's setting
- LED: To indicate ON/OFF status
Press the [Reset Button] button to reset Timer before programming.
Setting Options
- 16 pairs of on-off time of day cycles can be programmed.
- Each on-off cycle can be assigned to any one day of the week, or to the following groups of days: Monday–Friday; Monday–Saturday; Monday–Sunday; Saturday and Sunday; Monday–Wednesday; Thursday–Saturday; Monday/Wednesday/Friday; Tuesday/Thursday/Saturday.
- Manual Over-ride provided by "On/Auto/Off" switch.
- Program Reset button clears all settings. First, using a small pointed object push the reset button to clear all settings. The reset button is just above the "MIN" dark gray button.
Enclosure Details
Enclosure (TC7D-W): Requires a 4" x 4" electrical box by others. Box must accommodate (4) mounting screws. Minimum box depth 1.5". White wall plate and mounting screws provided.
Enclosure (TC7D-E): NEMA 4X and 12K. Use installation instructions that come with enclosure.
Dimension Drawings
TC7D-W Dimensions
A diagram showing the front view and side view of the TC7D-W unit with dimensions labeled: 4 1/2" overall width and height, 1 13/16" depth. Four screw holes are indicated.
TC7D-E Enclosure Dimensions
A diagram showing the TC7D-E unit within its enclosure, with front, side, and sectional views. Dimensions include 4.375" x 4.375" overall enclosure size, with a 3.975" x 3.975" cutout/mounting area, and a depth of 2.500".
Settings and Instructions
Setting the Clock
- Press and hold the CLOCK button.
- Press the DAY key until the correct day is displayed.
- Do the same with the HOUR and MIN. Now the clock is set!
Setting the Timer
Press the "DAY" key to scroll through the programming slots.
| Slot | MON | TUE | WED | THU | FRI | SAT | SUN |
|---|---|---|---|---|---|---|---|
| 1. | X | X | X | X | X | X | X |
| 2. | X | ||||||
| 3. | X | ||||||
| 4. | X | ||||||
| 5. | X | ||||||
| 6. | X | ||||||
| 7. | X | ||||||
| 8. | X | ||||||
| 9. | X | X | X | X | X | ||
| 10. | X | X | |||||
| 11. | X | X | X | X | X | X | |
| 12. | X | X | X | ||||
| 13. | X | X | X | ||||
| 14. | X | X | X | ||||
| 15. | X | X | X |
This table can be used to simplify programming. All times must be the same for the days chosen. For example, to run a device Monday through Friday at the same time, program slot #9.
Press the "TIMER" key. The display will show "1ON--:--". Set the desired ON time using the "HOUR" and "MIN" buttons. Press "TIMER" again to set the OFF time, displaying "1OFF--:--". Set the OFF time using "HOUR" and "MIN". For multiple on/off cycles per day, press "TIMER" again and set "2ON--:--", "2OFF--:--", up to a maximum of 8 on/off cycles per day.
The timer is now set. Push the "MANUAL" button until the line is under "AUTO" for automatic operation. If you only want one on/off per day or have multiple cycles, after programming, press the "CLOCK" key.
Resetting Settings
To change any or all on/off times, you must reset the timer. Individual settings cannot be changed directly.
To erase all settings, press the [Reset Button] button.
Operation Modes
There are three operation modes: "ON," "AUTO," and "OFF," selected through the "MANUAL" key. Observe the indicator line on the screen as it moves across the words.
- MODE ON: The output turns on immediately and stays on.
- MODE OFF: The output turns off immediately and stays off.
- MODE AUTO: The output turns on and off based on the programmed schedules.
When the timer is not powered, it turns off the output permanently.
Electrical and Wiring Schematics
Note: There is a wire on the TC7D that connects Terminal 1 to the relay common of the timer. You must cut this wire to eliminate voltage to the relay common.
Figure 3.1.0 EV90, EV90P, EV130, EV200, EV240, and EV300 Schematic
A wiring diagram showing the TC7D connected to control terminals for various EV models (EV90, EV90P, EV130, EV200, EV240, EV300), powered by a 24VAC Class II Power Supply. It illustrates connections to the unit's internal wiring.
Figure 3.1.1 SL70 Schematic
A simplified wiring diagram showing the TC7D connected to an SL70 unit. Connections are made via BLACK, RED, and YEL wires to 24 VAC, COMM, and HIGH OR LOW SPEED INPUT terminals. This configuration allows the timer to turn the Energy Recovery Ventilator (ERV) on at High speed when the timer dictates it is an occupied time.
Figure 3.1.2 EV Premium and SL75 Schematic
A wiring diagram detailing the TC7D's connection to a control board for EV Premium and SL75 units. It shows connections for 120VAC, 24VAC, and various ECM signals (SF_ECM_SIGNAL, SF_ECM_POWER, EF_ECM_POWER, EF_ECM_SIGNAL).
Figure 3.1.3 EV450, HE1X, and HE1.5 Standard Wiring Schematic
A simplified wiring diagram illustrating the TC7D connected to an ERV unit's internal control wiring. It shows connections for 24VAC power, an isolation relay coil, and notes that the Normally Closed (N.C.) contacts of one or more additional Low Voltage Controls may be connected to the ERV unit in parallel with the TC7D-E/W.
Figure 3.1.4 HE1XRT, HE1.5RT with Independent Blower Control and HE2X-LE10X Schematic
A wiring diagram similar to Figure 3.1.3, but with specific terminal assignments (1-5) for an isolation relay coil or damper actuator coil. It notes that Normally Closed (N.C.) contacts of other low voltage controls may be connected to ERV unit's Terminals 1 & 4, and advises not to apply power to these terminals.
Figure 3.1.5 EV450 ECM with Terminal Block Schematic
A wiring diagram showing the TC7D connected to an EV450 ECM via a terminal block. It includes connections for an isolation relay coil or damper actuator coil and notes that Normally Open (N.O.) contacts of additional low voltage controls may be connected to the ERV unit in parallel with the TC7D-E and TC7D-W.
Figure 3.1.6 HE1X and HE1.5 ECM with Terminal Block Schematic
Similar to Figure 3.1.5, this diagram shows TC7D connections to HE1X/HE1.5 ECMs via a terminal block. It specifies connections for an isolation relay coil or damper actuator coil and notes that Normally Closed (N.C.) contacts of additional low voltage controls may be connected to ERV unit's Terminals 1 & 4, advising not to apply power to these terminals.
Figure 3.1.7 EV450, HE1X and HE1.5 ECM with Circuit Board Schematic
A wiring diagram illustrating the TC7D timer connected to the circuit board of EV450, HE1X, and HE1.5 ECMs. It details connections to potentiometers (e.g., 10K) and the 24VAC power supply.
Figure 3.1.8 EV450, HE1X, and HE1.5 ECM with Circuit Board and CO2 Schematic
A wiring diagram similar to Figure 3.1.7, but also showing connections for a CO2 sensor. This setup allows the ERV to run at variable speed based on CO2 levels. The description mentions removing potentiometers by cutting wires and capping them, and that cut wires can be wired in parallel back to the CO2 Controller.
Figure 3.1.9 RH-W Electric Heater Schematic
A wiring diagram showing the TC7D connected to an RH-W thermostat (CTH-291) for controlling an electric heater. It notes to remove supplied wires from the time clock spade terminals before wiring. The diagram explains that when Normally Closed (NC) contacts open at desired times, the thermostat operates in Comfort Mode. When NC contacts are across RH-W thermostat terminals, the thermostat operates in Economy Mode, reducing the heater outlet set-point temperature by 8 degrees F.
About RenewAire
For over 35 years, RenewAire has been a pioneer in enhancing indoor air quality (IAQ) in commercial and residential buildings of every size. This is achieved while maximizing sustainability through their fifth-generation, static-plate, enthalpic-core Energy Recovery Ventilators (ERVs) that optimize energy efficiency, lower capital costs via load reduction and decrease operational expenses by minimizing equipment needs, resulting in significant energy savings. RenewAire ERVs are competitively priced, simple to install, easy to use and maintain, and have a quick payback. They also enjoy the industry's best warranty with the lowest claims due to long-term reliability derived from innovative design practices, expert workmanship and Quick Response Manufacturing (QRM).
As the pioneer of static-plate core technology in North America, RenewAire is the largest ERV producer in the USA. They are committed to sustainable manufacturing and lessening their environmental footprint. Their Waunakee, WI plant is 100% powered by wind turbines. The facility is also one of the few buildings worldwide to be LEED and Green Globes certified, as well as having achieved ENERGY STAR Building status. In 2010, RenewAire joined the Soler & Palau (S&P) Ventilation Group to provide direct access to the latest in energy-efficient air-moving technologies. For more information, visit: renewaire.com.
Contact: 201 Raemisch Road | Waunakee, WI | 53597 | 800.627.4499 | RenewAire.com
Member of the S&P Group Family of Brands.
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