Shop by Brand
Overview
Microprocessor-based integrated burner control for automatically fired gas, oil, coal or combination fuel single burner applications. Provides safety, functional capability and features beyond conventional controls.
Features
- Functions include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics and troubleshooting.
- Access for external electrical voltage checks.
- Application flexibility and communication interface capability.
- Five LEDs provide sequence information.
- Five function Run/Test Switch.
- Interchangeable plug-in flame amplifiers.
- Local or remote annunciation of RM7840 operation and fault information.
- Nonvolatile memory retains history files and lockout status after loss of power.
- Compatible with existing Honeywell flame detectors.
Product Specifications
|
Application |
Programming Control |
|
Dimensions (in.) |
5 in. wide x 5 in. high x 5 1/4 in. deep with Q7800A Subbase x 6 3/32 in. deep with Q7800B Subbase |
|
Dimensions (mm) |
127 mm wide x 127 mm high x 133 mm deep with Q7800A Subbase x 155 mm deep with Q7800B Subbase |
|
Weight (lb) |
1 lb 13 oz |
|
Weight (kg) |
0.8 kg |
|
Comments |
On/Off-LF Proven |
|
Frequency |
50 Hz; 60 Hz (±10%) |
|
Approvals, Underwriters Laboratories Inc. |
Component Recognized, File No. MP268; Guide No. MCCZ. |
|
Approvals, Canadian Standards Association |
Certified, File No. LR95329-3. |
|
Voltage |
120 Vac (+10, -15%) |
|
Shipping and Storage Temperature Range (F) |
-40 F to +140 F |
|
Shipping and Storage Temperature Range (C) |
-40 C to +60 C |
|
Approvals, Federal Communications Commission |
FCC Part 15, Class B, Emissions. |
|
Flame Establishing Period – Pilot |
4 sec or 10 sec |
|
Flame Establishing Period – Main |
10 sec or Intermittent |
|
Interlocks |
Running |
|
Preignition |
Yes |
|
PrePurge |
Determined by ST7800A Purge Timer Card |
|
PostPurge |
15 sec |
|
Early Spark Termination |
Yes, 5 sec |
|
Required Components |
Q7800A,B Universal Wiring Subbases. R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame Signal Amplifier. ST7800A Plug-in Purge Timer Card. |
|
AirFlow Check |
User selectable |
|
Second Stage Pilot Valve |
Intermittent |
|
Pilot Type |
interrupted |
|
Vibration |
0.5 G environment |
|
Approvals, Control Safety Devices |
Acceptable: CSD-1 |
|
Approvals, Swiss RE |
Acceptable |
|
Approvals, Factory Mutual |
Report No. OX4A5.AF |
