1. Kupu Whakataki
This manual provides comprehensive instructions for the installation, operation, and maintenance of the Peco TH109-009 Multi Use Line Voltage Thermostat. This robust thermostat is designed for controlling refrigeration, industrial heating/cooling, or staged heat/cool/ventilation systems. Its rugged, weather-resistant enclosure and large, visible dial make it suitable for various demanding environments, including those with moist conditions. The TH109-009 complies with N.E.C. 547 and NEMA 4X requirements.
2. Nga korero haumaru
WHAKATŪPATO: To prevent electric shock or equipment damage, always disconnect power to the thermostat and the controlled equipment before installation, servicing, or removing the cover. All wiring must comply with local electrical codes and ordinances.
- Kei roto i tenei hua nga matū e mohiotia ana e te State of California ka pa te mate pukupuku me te koha whanau me etahi atu kino uri.
- Ensure the power source matches the thermostat's voltage whakaritenga (24 Volts).
- Ko te whakaurunga me mahi e tetahi tohunga hangarau.
- Do not operate the thermostat with a damaged enclosure.
- Keep the thermostat away from direct water spray or excessive moisture beyond its NEMA 4X rating.
3. Hua Neke Atuview
The Peco TH109-009 is a durable and reliable thermostat designed for demanding applications. Key features include:
- Controls refrigeration, industrial heating/cooling or staged heat/cool/ventilation systems.
- Rugged, weather-resistant enclosure.
- Large, visible dial for easy temperature adjustment.
- Tolerates moist conditions, suitable for indoor/outdoor use.
- Complies with N.E.C. 547 and NEMA 4X requirements.

Whakaahua 3.1: Mua view of the Peco TH109-009 thermostat, showing its gray enclosure and large black control dial.
4. Tatūnga me te Tāuta
The TH109-009 is designed for wall mount installation. Ensure the mounting location is free from excessive vibration and provides adequate access for wiring and operation. This unit operates on 24 Volts AC/DC.
4.1 Whakapiki
- Momotu Mana: Before beginning, ensure all power to the circuit is disconnected at the main breaker or fuse box.
- Tīpako Tauwāhi: Choose a suitable wall-mount location that is representative of the area to be controlled and away from direct heat sources, drafts, or obstructions.
- Whakaeke Haumaru: Use appropriate screws and anchors to securely fasten the thermostat's base to the wall. The unit measures approximately 8.25 x 5.5 x 3.37 inches.

Figure 4.1: The Peco TH109-009 thermostat held in a hand, illustrating its approximate 8-inch height for scale.
4.2 Waea Whakahoahoa
Refer to the wiring diagram provided inside the thermostat's cover for specific connections. Ensure all connections are tight and secure. This thermostat includes one relay for control.
- Manatokohia te voltage of your system is 24 Volts.
- Connect the power supply wires to the designated terminals.
- Connect the load wires (to the heating/cooling/ventilation system) to the appropriate relay terminals.
- After wiring, carefully replace the cover, ensuring no wires are pinched.
- Whakahokia te hiko ki te ara iahiko.
5. Nga Tohutohu Whakahaere
The Peco TH109-009 thermostat features a simple mechanical knob for temperature control.
- Tautuhinga Pawera: Rotate the large black dial on the front of the thermostat to set the desired temperature. The dial is marked with temperature increments.
- System Response: The thermostat will activate or deactivate the connected heating, cooling, or ventilation system based on the set temperature and the ambient temperature.
- Aroturuki: Periodically check the ambient temperature and the system's response to ensure optimal performance.
6. Tiaki
The Peco TH109-009 is designed for minimal maintenance due to its rugged construction. However, periodic checks can ensure long-term reliability.
- Te horoi: Mā te āta horoi i te taha waho o te thermostat ki te wai ngohengohe,amp cloth. Do not use abrasive cleaners or solvents. Ensure no liquid enters the enclosure.
- Hononga: Annually, with power disconnected, inspect wiring connections for tightness and signs of corrosion.
- Sensor Coil: Ensure the external sensor coil (if applicable to your specific setup) is clean and free from debris that could impede accurate temperature sensing.
7. Te Raru
If you experience issues with your Peco TH109-009 thermostat, refer to the following common troubleshooting steps:
| Raruraru | Take pea | Rongoā |
|---|---|---|
| Thermostat not responding / No power | No power to the unit; tripped breaker/fuse; loose wiring connection. | Check power supply; reset breaker/replace fuse; inspect and tighten wiring (with power off). |
| Te whakahaere i te pāmahana hē | Thermostat located near heat source/draft; sensor coil obstructed/dirty; calibration issue. | Relocate thermostat if possible; clean sensor coil; consult a qualified technician for calibration. |
| System runs continuously or not at all | Incorrect wiring; faulty relay; thermostat setting too extreme. | Verify wiring against diagram; adjust temperature setting; if problem persists, professional service may be required. |
If the issue persists after attempting these steps, contact a qualified HVAC technician or PECO customer support.
8. Whakatakotoranga
| Waitohu | PECO |
| Tau tauira | TH109-009 |
| Momo Kaiwhakahaere | Puka miihini |
| Tae | Kerei |
| Nga Whakamahinga Motuhake mo te Hua | Te whakamahi i roto/waho |
| Momo Mana Pawera | ā-ringa |
| Nga Waahanga kei roto | 1 x Rere |
| Puna Mana | AC DC |
| Taumaha Tūemi | 1 Pauna (tata ki te 0.45 kg) |
| Voltage | 24 Volts |
| Hanga | Tapawhā |
| Momo Whakaatu | ā-ringa |
| Momo Mana | Mana Waea |
| Momo Whakaeke | Maunga Taiepa |
| Kāhua | Ahumahi |
| Whakamuri | Kao |
| Momo Whakatakotoranga | NEMA |
| UPC | 879978000288 |
| Hunga Hua | 8.25 x 5.5 x 3.37 inihi (tata ki te 21 x 14 x 8.6 cm) |
| Te Ra Wātea Tuatahi | Haratua 11, 2010 |
9. Pūtāhui me te Tautoko
Specific warranty terms and customer support contact information are not provided within this manual. For warranty details or technical assistance, please refer to the product packaging, the manufacturer's official webpaetukutuku, whakapā atu rānei ki tō wāhi hoko.
Kaihanga: Peko





