Overview
Microprocessor-based integrated burner control for full modulation applications. Provides automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics, and troubleshooting.
Features
- 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 amplifiers.
- Local or remote annunciation of operation and fault information (optional).
- Non-volatile 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 10 oz |
Weight (kg) |
0.7 kg |
Comments |
LHL-LF&HF Proven |
Frequency |
60 Hz (±10%),50 Hz |
Voltage |
220 to 240 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 |
Flame Establishing Period – Pilot |
3 sec or 5 sec |
Flame Establishing Period – Main |
3 sec, or 5 sec, or Intermittent |
Interlocks |
Lockout |
Preignition |
Yes |
PrePurge |
Determined by ST7800A Purge Timer Card |
PostPurge |
30 sec |
Early Spark Termination |
Yes, 5 sec |
Required Components |
Q7800A,B Universal Wiring Subbases. R7847, R7849, 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, Swiss RE |
Acceptable |
Approvals, Factory Mutual |
Report No. 1V9AO.AF. |
Approvals, Gastec/European |
GASTEC: CE-63AP3070/1, Approved to EN298. |
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