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Twinning Connection
Fused to Protect Low Voltage System Transformer
Direct OEM Replacements Designed for High Volume Major Brand Controls
Diagnostic LED Indicators Streamline Installation and System Troubleshooting
Replaceable Automotive Style Fuse
System Diagnostic LED with Fault Recall
Multi-Speed Circulator
One or two-Stage Gas Valve
Direct OEM Replacements Designed for High Volume Major Brand Controls
Diagnostic LED Indicators Streamline Installation and System Troubleshooting
Replaceable Automotive Style Fuse
R7505BU 7505B1500U PRIMARY CONTROL
78K59 HD1-2 LB-91256A CONTROL
Twinning
Fused to Protect Low Voltage System Transformers
Adjustable Blower Relay
Diagnostic LED Indicators Streamline Installation and System Troubleshooting
Replaceable Automotive Style Fuse
48K98 LB-90089A BCC3 REPLACEMENT CONTROL BOARD
Printed fan circuit board that controls blower and monitors primary limit and gas valve operation
4 non-changeable relays (K1, K2, K3, K40) mounted on the board