Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the White-Rodgers Emerson 1127-2 Hot Water Control. This device is designed for use as a surface (strap-on) type hydronic control, suitable for high limit, reverse acting, or SPDT switching action applications. Please read all instructions carefully before proceeding with installation or operation.
Продукт бүттүview

Image: The White-Rodgers Emerson 1127-2 Hot Water Control, a gray rectangular unit with a temperature dial and the 'WR White-Rodgers' logo. The unit measures approximately 30 inches in height, 8 inches in depth, and 6 inches in width.
The White-Rodgers 1127-2 is a robust surface-mount control designed for reliable performance in hydronic systems. Its hydraulic action element allows for mounting in any position without requiring leveling. Key features include:
- Attaches directly to the surface of a pipe.
- Functions as a High Limit, Reverse Acting, or SPDT Switching Action Control.
- Features a dustproof steel case for durability.
- Equipped with special screw terminals with 'ears' for secure wire connections.
- Includes pipe strap and mounting screws for installation.
Техникалык шарттар
| Бренд | Уайт-Роджерс |
| Модель аты | 1127-2 |
| Продукциянын өлчөмдөрү | 30"D x 8"W x 6"H (Note: These dimensions appear to be for packaging or shipping, not the unit itself based on typical control sizes. Refer to actual unit for precise measurements.) |
| Controller Type | Механикалык |
| Продукт үчүн атайын колдонуу | Pipe (Surface-mount hydronic control) |
| Температураны көзөмөлдөө түрү | Термостатикалык |
| Байланыш технологиясы | Зымдуу |
| Power Source | Hardwired |
| Материал | Эритме болот |
| Дисплей түрү | Manual |
| Башкаруу ыкмасы | Touch (for setting) |
| Монтаж түрү | Боолуу |
| Температура диапазону | 100°F - 240°F |
| Дифференциалдык | Туруктуу 10°F (5.5°C) |
| Аракетти которуу | SPDT (Бир таякчалуу кош ыргытуу) |
| Motor Rating (Full Load) | 120VAC/7.4A, 240VAC/3.7A |
| Valves and Relays | 24VAC/2.9A, 0.3 - 12VDC |
| Сертификаттар | U.L. listed and C.S.A. Approved |
| Элемент Салмагы | 1.61 фунт |
Орнотуу нускамалары
Биринчи коопсуздук: Before beginning any installation, ensure that the main power supply to the heating system is turned off at the circuit breaker or fuse box. Failure to do so can result in electrical shock or equipment damage.
- Монтаждоо жери: Select a suitable location on the pipe where the control needs to monitor water temperature. Ensure the pipe surface is clean and free from insulation or debris.
- Attach Control: Position the 1127-2 control directly against the pipe surface. Use the provided pipe strap and mounting screws to securely fasten the control to the pipe. The sensing element is designed for optimal contact with the pipe.
- Зымдар: Open the dustproof steel case to access the screw terminals. Connect the electrical wiring according to the specific application (High Limit, Reverse Acting, or SPDT Switching Action). The terminals are designed with 'ears' to securely hold both solid and stranded wires. Refer to your system's wiring diagram for correct connections.
- Ишти жабуу: Once wiring is complete and secure, close the dustproof steel case, ensuring it is properly sealed.
- Күчтү калыбына келтирүү: Жылытуу системасынын электр энергиясын калыбына келтириңиз.
- Сыноо операциясы: Verify the control operates as expected by monitoring the system's temperature and the control's switching action.
Электр рейтингдери: Ensure your system's electrical load does not exceed the control's ratings: 120VAC/7.4A or 240VAC/3.7A for motor loads, and 24VAC/2.9A or 0.3-12VDC for valves and relays.
Иштөө нускамалары
The White-Rodgers 1127-2 Hot Water Control operates mechanically based on the temperature of the pipe it is mounted on. It features a fixed differential of 10°F (5.5°C).
- Температураны орнотуу: The control has a manual temperature setting range of 100°F to 240°F. To adjust the setpoint, locate the temperature dial on the unit. Carefully rotate the dial to the desired temperature.
- Которуу аракети: The control's SPDT (Single Pole Double Throw) switch will activate or deactivate connected components (e.g., circulator pumps, burners) when the pipe temperature reaches the setpoint, considering the fixed 10°F differential.
- Мониторинг: Regularly monitor your hydronic system to ensure the control is maintaining the desired temperature and performing its intended function (high limit, reverse acting, or standard switching).
Техникалык тейлөө
The White-Rodgers 1127-2 Hot Water Control is designed for minimal maintenance. However, periodic checks can help ensure its longevity and reliable operation:
- Визуалдык текшерүү: Annually inspect the control for any signs of physical damage, corrosion, or loose connections.
- Монтаждоо коопсуздугу: Ensure the pipe strap and mounting screws remain tight and the control is securely attached to the pipe.
- Тазалык: Keep the exterior of the control clean and free of dust or debris. The case is dustproof, but excessive buildup can hinder performance.
- Зымдардын бүтүндүгү: Periodically check electrical connections for tightness and absence of fraying or damage.
Эскертүү: Do not attempt to disassemble the control beyond accessing the wiring terminals. Internal components are not user-serviceable.
Проблемаларды чечүү
If the White-Rodgers 1127-2 Hot Water Control is not functioning as expected, consider the following common issues:
- Control Not Activating/Deactivating:
- Verify the power supply to the heating system is on.
- Check the set temperature on the control. Ensure it is within the desired operating range and accounts for the 10°F differential.
- Зымдарды туташтырууда боштук же бузулуу бар-жоктугун текшериңиз.
- Ensure the control is making good thermal contact with the pipe surface.
- Inaccurate Temperature Reading/Control:
- Confirm the control is securely mounted to the pipe. Poor contact can lead to inaccurate sensing.
- Ensure there are no external factors affecting the temperature sensing, such as drafts or direct heat sources unrelated to the pipe.
- Үзгүлтүксүз иштөө:
- Бош электр байланыштарын текшериңиз.
- Ensure the control's electrical ratings are not being exceeded by the connected load.
If troubleshooting steps do not resolve the issue, it is recommended to contact a qualified HVAC technician or the manufacturer for further assistance.
Кепилдик маалымат
This product is sold without an explicit warranty. For specific details regarding returns or implied warranties, please refer to the retailer's policy at the time of purchase or contact White-Rodgers directly.
Техникалык колдоо
For technical assistance, wiring diagrams, or further product information, please contact White-Rodgers customer support or visit their official website. When contacting support, please have your product model number (1127-2) available.





