LD Common Parts
Determine Manufacture Date
Date Code Chart
Sample Burner Box Tag
Part Description | LD | LD | LD3 | LD3 | LD3 | LD3 |
06/2000 to 12/2012 | 12/2012 to 2014 | 12/2013 to 10/2016 | 11/2016 to 09/2021 | 10/2021 to 07/2025 | 08/2025 to Present | |
Inducer Fan Blower | TP-55A | TP-55A | TP-3115 | TP-3115 | TP-3115 | TP-3115 |
Circuit Board | TP-851 | TP-851 | TP-851C | TP-851C | TP-851C | TP-851B |
Flame Rod | TP-222 | TP-222 | TP-222 | TP-222 | TP-222 | TP-222 |
Ignition Device | TP-50A | TP-50A | TP-3050 | TP-3050 | TP-3050 | TP-3050 |
Gas Valve (Nat) | TP-840A | TP-840A | TP-3140 | TP-3140 | TP-3140 | TP-3140 |
Gas Valve (LP) | TP-841A | TP-841A | TP-3141 | TP-3141 | TP-3141 | TP-3141 |
Indicator LIghts | TP-828 | TP-828 | TP-828 Y TP-1428 G | TP-828 Y TP-1428 G | TP-828 Y TP-1428 G | TP-828 Y TP-1428 G |
Thermal Fuse | TP-1033 | TP-1033 | TP-1033 | - | - | - |
Control Voltage | 24V (internal supply) | 24V (internal supply) | 24V (internal supply) | 24V (internal supply) | 24V (internal supply) | 24V (internal supply) |
IOM Link |
Pressure Switch
Model | Year Range | 40 MBH | 50 MBH | |
LD | 06/2000 to 12/2012 12/2012 to 2014 | Switch 1 N.O. Switch 2 N.C. | TP-264F TP-1060F | TP-264F TP-1060F |
LD3 | 12/2013 to 10/2016 | TP-3161 | TP-3161 | |
LD3 | 11/2016 to 09/2021 | Switch 1 N.O. Switch 2 N.C. | TP-264E TP-260M | TP-264F TP-260F |
LD3 | 10/2021 to 07/2025 08/2025 to Present | Switch 1 N.O. Switch 2 N.C. | TP-1264A TP-260G | TP-264F TP-260G |
Note: For heaters with (2) pressure switches, the burner switch in the blower compartment is a normally open switch and the exhaust switch in the gas valve compartment is a normally closed switch
Burner Control Box Parts
-
TP-851C
$180.00 -
TP-851B
$230.00 -
TP-851
$230.00 -
TP-841A
$230.00 -
TP-840A
$230.00 -
TP-828
$10.00 -
TP-826
$43.00 -
TP-55A
$200.00 -
TP-50A Glo-Bar Hot Surface Igniter
$59.00 -
TP-3161
$72.00 -
TP-3141
$242.00 -
TP-3140
$242.00 -
TP-3115
$117.50 -
TP-3050 Glo-Bar Hot Surface Igniter
$59.00 -
TP-264F
$59.00 -
TP-264E
$59.00 -
TP-260M
$59.00 -
TP-260G
$59.00 -
TP-260F
$59.00 -
TP-222
$25.00 -
TP-1428
$10.00 -
TP-1264A
$59.00 -
TP-1060F
$59.00
24V Controls
LD3 24V Control
Older LD 24V Control
 | 40 VA transformer, 120–24 VAC primary and secondary. Used with ERK to control multiple heaters. | |
 | External Relay Kit for controlling multiple heaters with 24V control. | |
 | 24V Wall Control Switch - HL3 and similar 24V Two Stage heaters. | |
 | Two Stage thermostat. 35°–75°F range. Voltage: 24, 120 VAC | |
 | Single stage or two stage programmable thermostat. 45°–90°F range. 24 VAC | |
 | 4 Hour Timer Control Switch - HL3 and similar 24V Two Stage heaters. | |
 | Two Stage thermostat with rain tight enclosure 40°–100°F range. Can be used with 24–277 VAC. |