750-382
CBT
1-7
Controls
• Outdoor temperature reset.
• Remote firing rate or setpoint control
• Setback/time-of-day setpoint
• Built-in Lead-Lag control for multiple boiler systems
• Warm standby-minimum temperature control
1.4.2 — On-off controls
The Burner Control provides burner sequencing control and flame supervision.
A switch/light panel provides functionality similar to full modulation units: indicator lights for demand, fuel valve
open, alarm, low water, and (optional) high water; panel switches for power on/off and ALWCO reset.
H.W.A. OPTION
BURNER
CONTROL
LIGHT/BUTTON
PANEL
ALWCO
CONTROLLER
LWCO CONTROLLER
PUMP CONTROL
TERMINAL STRIP
IGNITION
TRANSFORMER
AIR PRESSURE
SWITCH
FIGURE 1-7. Control panel, on/off boilers
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