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To replace parts or service the SUBURBAN fam ily of RV furnaces, it is necessary to follow these steps:
DD-17DSI
1.
Turn off gas and power, then disconnect gas and power supply at the furnace. Label wires as necessary.
2.
Rem ove the vent cap assem bly by rem oving applicable screws.
3.
Rem ove the cabinet front two (2) screws.
4.
Rem ove the applicable screws securing the furnace to the coach floor.
5.
Rem ove duct from side of furnace, if equipped.
6.
Rem ove the furnace from the cabinet area to gain access to com bustion cham ber and applicable parts.
7.
Som e parts can be accessed without rem oval of the com plete furnace.
8.
To re-install, reverse this procedure.
9.
Rewire applicable wires and perform a leak test on all fittings. Perform a drop pressure test.
NT-12/16/20S
1.
Turn off gas and power, then disconnect gas and power supply at the furnace. Label wires as necessary.
2.
Rem ove the vent cap assem bly by rem oving applicable screws.
3.
Rem ove the cabinet front two (2) screws.
4.
Rem ove the (1) one tie down screw securing the cham ber to the cabinet.
5.
Rem ove the furnace from the cabinet by pulling cham ber outward com pletely to gain access to all controls and applicable
parts.
6.
To re-install, reverse this procedure.
7.
Rewire applicable wires and perform a leak test on all fittings. Perform a drop pressure test.
NT-12/16/20SE
1.
Turn off gas and power, then disconnect gas and power supply at the furnace. Label wires as necessary.
2.
Rem ove the vent cap assem bly by rem oving applicable screws.
3.
Rem ove the cabinet front two (2) screws.
4.
Rem ove the (2) two tie down screws securing the cham ber to the cabinet.
5.
Rem ove the furnace from the cabinet by pulling cham ber outward com pletely to gain access to all controls and applicable
parts.
6.
To re-install, reverse this procedure.
7.
Rewire applicable wires and perform a leak test on all fittings. Perform a drop pressure test.
NT-24/30/34SP and NT-40
1.
Turn off gas and power, then disconnect gas and power supply at the furnace. Label wires as necessary.
2.
Rem ove the vent cap assem bly by rem oving applicable screws and one (1) flue retaining screw. Not applicable to NT-40.
3.
Rem ove the cabinet front two (2) screws.
4.
Rem ove the (2) two tie down screws securing the cham ber to the cabinet.
5.
Rem ove the furnace from the cabinet by pulling cham ber outward com pletely to gain access to all controls and applicable
parts.
6.
To re-install, reverse this procedure.
7.
Rewire applicable wires and perform a leak test on all fittings. Perform a drop pressure test.
FURNACE REMOVAL
35
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