DTH(S)-3 SERIES TUBE HEATER PARTS

(Manufactured 1990 to 1994)

Common Components

Part Description

Original
Part Number

Replacement
Part Number

Fan TP-55A TP-55A
Burner – Normally Open Air Switch TP-61B TP-264B
Exhaust – Normally Closed Air Switch TP-60D TP-60D
Circuit Board TP-78A TP-78D and TP-390
Glo-Bar TP-50 TP-50
Natural Gas Valve TP-79 TP-79
LP Gas Valve TP-107P TP-107P
Wire Harness TP-78B TP-78B
Burner Housing TP-42 TP-42
16″ Burner Tube TP-8C TP-8C
1st 10 Ft. Tube1 TP-8E or TP-26B TP-8E or TP-26B
10 Ft. Reflector Past 1st 10 Ft.3 TP-20A or TP-20C TP-20A or TP-20C
Downstream Reflector Section(s) (DTH only)2 TP-20B TP-20B

1Select the TP-8E for use with DTH Series, select the TP-26B for use with the DTHS Series.

2The first 10 Ft. section of reflector differs from the remaining 10 Ft. downstream sections of reflector (for the DTH Series model only.) Use TP-20A for the first 10 Ft. Section of reflector and TP-20B for the remaining sections.

3Use TP-20C for DTHS Series models.

Pressure Switches

Switch 14 Switch 24
DRP Part Number TP-264B TP-60D
Cross Reference Number (on unit) IS22010051F5166 FS6628-1173
Normal Setting Open Closed
Pressure Switch Tube Set TP-51A + TP-56C TP-AK3

4Pressure switch #1 is electrically first in series, and pressure switch #2 is second in series.

Circuit Boards

Part Description Part Number
Original Circuit Board TP-78A
Cross Reference Number (on unit) Mark 17X-117
Harness TP-78B
Replacement Board TP-78D
Adaptor5 TP-390

5Use TP-390 adaptor to attach replacement board TP-78D to original wiring harness TP-78B.