263
Discontinued - Replaced By: 294
Part of the Multi-Staging Controls Series
Ordering Code: 263
UPC: 779655026306
Boiler Control, Two Stage, One Modulating Boiler, DHW and Setpoint
The boiler control 263 is designed to stage multiple boilers or operate a modulating boiler using outdoor temperature reset. It can be used in applications ranging from a single zone of baseboard, multiple baseboard and fan coil zones, to dedicated domestic hot water heating in commercial buildings. This control regulates a single heating water temperature through outdoor temperature reset, setpoint, and DHW target control. It is capable of controlling (stage and rotate) up to 2 on/off boilers, a single 2 stage boiler, or 1 modulating boiler as well as the system pump.
Features
- Outdoor temperature reset, setback input for energy savings
- warm weather shut down, automatic boiler differential
- Equal runtime rotation, 1 modulating or 2 stage boiler control
- Exercising, DHW pump or valve operation
- DHW priority (optional), quick Setup for easy installation and programming of control
- User comfort adjustment to increase or decrease building space temperature
- Advanced settings to fine-tune building requirements
- Powered boiler pump output
- Test sequence to ensure proper component operation
| Specifications | |
|---|---|
| Agency Approvals | CSA C US, meets Class B: ICES & FCC Part 15 |
| Ambient Conditions | Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 80 percent to 88 degrees F (31 degrees C), down to 50 percent above 104 degrees F (40 degrees C), Altitude less than 6560 ft. (2000 m), Installation Category II, Pollution Degree |
| Control Type | Microprocessor control, this is not a safety (limit) control |
| Demand | 20 to 260 V (ac) 2 VA |
| Dimensions | 6 5/8 IN H x 7 9/16 IN W x 2 13/16 IN D (170 x 193 x 72 MM) |
| Enclosure Material | Blue PVC plastic |
| Enclosure NEMA Rating | NEMA 1 |
| Hydronic - HVAC Control Type | Boiler Control |
| Modulating Output | 0-20 mA / 4-20 mA (up to 1000 ohms load) |
| Power Supply | 115 V (ac) plus / minus 10 percent, 50/60 Hz, 600 VA |
| Relay | 230 V (ac) 5 A, 1/3 hp, pilot duty 240 VA |
| Sensor | NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892 |