background image

13

Figure 6

Figure 6A

VEnT aSSEMblY inSTallaTiOn (SFV MODElS)

STANDARD VENT ASSEMBLY FURNISHED WITH FURNACE. SPECIAL EXTENSION TUBES, IF 

NEEDED, MUST BE ORDERED SEPARATELY. EXTENSION KITS COME WITH COMPLETE 

INSTALLATION INSTRUCTIONS.

USE VENT SUPPLIED WITH FURNACE

EXTENSION TUBES KIT NO.

7 1/2" TO 9"

4 1/2" TO 7 1/2"

3" TO 4 1/2"

1 1/2" TO 3"

0" TO 1 1/2"

X" DIMENSION

520769
520551

520768

VENT CAP

EXHAUST

 & INT

AKE

LC

TRAILER SKIN

SFV-20, 25, 30, 35, 42 VENT INSTALLATION FOR VERTICAL MOUNT

SURFACE

MOUNTING

"X"

2

3

4

"

DIA.

1.000

 TYP

.

NEVER INSTALL THE EXHAUST TUBE 

WITH LESS THAN 1 1/4" OVERLAP, OR 

THE INTAKE TUBE WITH LESS THAN 

1/2" OVERLAP.

HOT

SUBURBAN

BRACKET REAR VERTICAL

MOUNTING-USE IF POSSIBLE

BRACKET, CABINET MOUNTING

(ONE PER SIDE)

051249

DO NOT

 BLOCK OPENINGS

GASKET, BOTTOM DUCT

THICKNESS

8.000"

3.375"

2.062"

18.750"

VENT CAP & EXHAUST TUBE

WITH GASKET

DETAIL "A"

(SECURE WITH 6 SCREWS)

REMOVABLE PANEL OF COACH WALL

MUST SEAL WATER TIGHT

WITH GASKET

CL

L

C

FURNACE

CUTOUT

ANCHOR FURNACE TO FLOOR USING THE

(4) #10 X 3/4 SCREWS PROVIDED

(2) 2.250 DIA. HOLES

2.000" MAX. WALL

TUBE, AIR INTAKE

2.060"

SECURE CABINET MOUNTING BRKTS TO CABINET

WITH (2) #8 X 1/2 SCREWS

INSIDE WALL

CAULK BEHIND VENT CAP AS SHOWN TO SEAL BETWEEN 

EXHAUST AND INTAKE AND TO PREVENT MOISTURE INSIDE 

FURNACE COMPARTMENT. APPLY CAULKING GENEROUSLY 

AROUND PERIMETER OF VENT CAP AND ACROSS CENTER 

AS SHOWN. CENTER PUTTY STRIP IS ESSENTIAL.

SEE DETAIL "A"

OUTSIDE SKIN (PANEL)

FURNACE CABINET

FRONT

RAIN SHIELD INSTALLATION:

APPLY CAULKING BETWEEN RV SKIN AND BACK OF RAIN SHIELD.

POSITION RAIN SHIELD AS ILLUSTRATED. APPLY A SECOND LAYER

OF CAULKING OVER RAIN SHIELD AND BEHIND VENT CAP AS 

ILLUSTRATED. FOLLOW INSTRUCTIONS FOR CAULKING VENT.

TUBE, INTAKE AIR

REMOVABLE PANEL

VENT CAP & EXHAUST TUBE 

ELECTRICAL CONNECTION

GAS CONNECTION (REAR) (SFV-35)

FLOOR

OUTSIDE SKIN (PANEL)

3.750

2.060

RIGHT SIDE

OF CUTOUT

GAS CONNECTION (FRONT) (SFV-35F)

CUT OUT AS VIEWED

FROM INSIDE R.V.

Содержание SFV-25

Страница 1: ...Suburban R V F URNA C E Service TRAINING Manual...

Страница 2: ...12 VDC 520820 Fan Control Module Board 26 Sequence of Operation 24 VAC 520947 Fan Control Module Board 27 Sequence of Operation SHD 2542 Furnace 28 Sequence of Operation Time Delay Relay Equipped Fur...

Страница 3: ...erates on 120 volts AC These are designed and tested under the same standards as the 12 volt models Suburban forced draft combustion furnaces used in recreational vehicles are designed for use with Pr...

Страница 4: ...ved from the furnace 3 Never use a screwdriver on any part of the electrode assembly while the furnace is in operation 4 Be certain that the spark from the electrode never reaches the flame sensor por...

Страница 5: ...1 2 17 20 Electronic 35 SF 42Q 42FQ 40 000 7 1 2 17 20 Electronic 35 SH 35Q 35FQ 35 000 9 1 4 17 20 Electronic 40 SH 42Q 42FQ 40 000 9 1 4 17 20 Electronic 42 Accessories Description 6258ACW DOOR Opt...

Страница 6: ...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...

Страница 7: ...essary 2 Remove the vent cap assembly by removing applicable screws 3 Remove the cabinet front two 2 screws 4 Remove the 1 one tie down screw securing the chamber to the cabinet 5 Remove the furnace f...

Страница 8: ...furnace installation manual for all installation requirements Location and Installation Locate the furnace near lengthwise center of the coach Choose a location for installation out of the way of wire...

Страница 9: ...P AND ACROSS CENTER AS SHOWN CENTER PUTTY STRIP IS ESSENTIAL OUTSIDE SKIN PANEL TUBE INTAKE AIR WITH GASKET VENT CAP AND EXHAUST DETAIL A 2 MAXIMUM WALL THICKNESS TUBE AIR INTAKE WITH GASKET VENT CAP...

Страница 10: ...INSIDE FURNACE COMPARTMENT APPLY CAULKING GENEROUSLY AROUND PERIMETER OF VENT CAP AND ACROSS CENTER AS SHOWN CENTER PUTTY STRIP IS ESSENTIAL 2 M A X C L 9 7 64 1832 7 10 1 32 FURNACE TIE DOWN SCREW FU...

Страница 11: ...DERED SEPARATELY EXTENSION KITS COME WITH COMPLETE INSTALLATION INSTRUCTIONS 1 Figure 4A SH Models VENT ASSEMBLY INSTALLATION SF 20F SF 25F SF 30F SF 35F SF 42F STANDARD VENT INSTALLATION X INTAKE 1 2...

Страница 12: ...MUST BE NOTCHED AS SHOWN BELOW 220 MIN HEIGHT WIDTH DETAIL A ONE PER SIDE CABINET MOUNTING L C 375 2 062 220 MIN 2 060 8 281 CUTOUT AS VIEWED FROM OUTSIDE R V CUTOUT FOR FURNACE ACCESS DOOR FRAME FLO...

Страница 13: ...URE WITH 6 SCREWS REMOVABLE PANEL OF COACH WALL MUST SEAL WATER TIGHT WITH GASKET C L L CFURNACE CUTOUT ANCHOR FURNACE TO FLOOR USING THE 4 10 X 3 4 SCREWS PROVIDED 2 2 250 DIA HOLES 2 000 MAX WALL TU...

Страница 14: ...ENT CAP AND ACROSS CENTER AS SHOWN CENTER PUTTY STRIP IS ESSENTIAL IMPORTANT VENT CAP AND TUBE ASSY MUST BE INSTALLED FROM OUTSIDE OF COACH VENT ASSEMBLY INSTALLATION NT SERIES VENT TUBE INSTALLATION...

Страница 15: ...12 1 1 4 MIN OVERLAP 3 8 X 27 1 4 TO 29 1 2 22 3 4 TO 25 25 TO 27 1 4 TRAILOR SKIN 2 1 4 VENT CAP 1 2 MIN OVERLAP DIA 2 1 4 Y 7 1 2 DIA VENT TUBE INSTALLATION NT 20S VENT TUBE ASSY INTAKE SEE CHART MO...

Страница 16: ...20501 7 to 9 EXTENSION TUBE KIT NUMBER MIN MAX LENGTH Extension Tube Range 520593 2 1 4 to 3 1 8 520594 3 1 8 to 4 7 8 520595 4 7 8 to 7 520596 7 to 9 Figure 15 NT 40 P40 Figure 14 NT 24 30 34SP P30 3...

Страница 17: ...WALL THICKNESS 2 25 NOTE 0 CLEARANCE PERMISSIBLE AT REAR OF FURNACE FOR A WIDTH OF 2 25 MAXIMUM VENT CAP Figure 17 P40 VENT ASSEMBLY INSTALLATION NT40 P40 3 1 2 7 1 2 2 3 4 13 6 7 32 12 7 16 FLOOR 1...

Страница 18: ...NOT REMOVE COLLAR VENT CAP CENTERLINE OF FURNACE INSTALLATION 3 DIA 2 HOLES OUTER SKIN 3 1 2 X 7 CUTOUT THRU COMBUSTIBLE CONSTRUCTION CAULK BEHIND VENT CAP AS SHOWN TO SEAL BETWEEN EXHAUST AND INTAKE...

Страница 19: ...THE FURNACE MUST NOT BE LESS THAN THE MINIMUM SPECIFIED SPACER BUMPS FURNACE Figure 20 SF 20F 25F 35F 42F DUCTING Suburban furnaces require that a minimum duct area be maintained throughout entire du...

Страница 20: ...L R SIDE DUCT SQ INCH RETURN AIR SQ INCH DD 17DSI SEE 1 0 0 0 0 0 N A N A N A N A N A NT 12S 3 8 1 0 0 1 1 2 4 N A N A 25 55 NT 16S 3 8 1 0 0 1 1 2 4 N A N A 25 55 NT 20S 1 1 0 0 1 1 2 4 N A N A 25 5...

Страница 21: ...REQ D BTM DUCT SQ INCH TOP DUCT SQ INCH L R SIDE DUCT SQ INCH RETURN AIR SQ INCH SF 20 20F 1 0 0 0 0 0 2 4 56 56 25 55 SF 20Q 20FQ 1 0 0 0 0 0 2 4 56 56 25 55 SF 25 25F 1 0 0 0 0 0 3 4 56 56 36 55 SF...

Страница 22: ...BACK CLR LEFT CLR RIGHT DUCTS REQ D BTM DUCT SQ INCH TOP DUCT SQ INCH L R SIDE DUCT SQ INCH RETURN AIR SQ INCH SFV 20 20F 1 1 0 0 1 1 SEE 4 52 SEE 4 SEE 4 55 SFV 25 25F 1 1 0 0 1 1 SEE 4 52 SEE 4 SEE...

Страница 23: ...any of the original wire that is supplied with the appliance must be replaced it must be replaced with type 105 C or its equivalent Power supply connections are to be on the right side of the furnace...

Страница 24: ...ucted 16 000 PROPANE 12 VDC 3 2 8 1 WC 165 NT 20S Ducted 19 000 PROPANE 12 VDC 3 2 8 1 WC 165 NT 12SE Direct Discharge 12 000 PROPANE 12 VDC 3 2 8 N A 140 NT 16SE Direct Discharge 16 000 PROPANE 12 VD...

Страница 25: ...3 7 0 3 IN MOTOR 2 WC 300 SF35 35F Ducted 35 000 PROPANE 12 VDC 3 8 5 2 5 IN MOTOR 9 4 3 IN 2 WC 375 SF35Q 35FQ Ducted 35 000 PROPANE 12 VDC 3 8 4 3 IN MOTOR 2 WC 375 SF 42 42F Ducted 40 000 PROPANE...

Страница 26: ...module board will then check for flame sense to verify successful lighting of the main burner flame Sparking of the igniter will then be terminated and the gas valve and blower outputs will remain en...

Страница 27: ...seconds of ignition time The module board will then check for flame sense to verify successful lighting of the main burner flame Sparking of the igniter will then be terminated and the gas valve and b...

Страница 28: ...ame sense to verify successful lighting of the main burner flame Sparking of the igniter will then be terminated and the gas valve and blower outputs will remain energized If ignition is successful th...

Страница 29: ...em as power is applied to the DSI Board The system will do the following 1 The board has a timing circuit which allows the blower to purge the chamber of any products of combustion or gas 2 The board...

Страница 30: ...fifteen 15 seconds the module creates spark and opens valve NO Check for 12VDC between RED and YELLOW wires at the module board YES Check plug connection tot he Module Electrode and Wire Spark gap 1...

Страница 31: ...Molex Edge Connector YES Verify voltage thru limit and sail switch to module board If circuit remains open for 30 seconds module board will go into lockout and shut down motor RESET thermostat Replac...

Страница 32: ...ockout function of the module board After the blower has stopped the ignition sequence can be started again The module will try three times for ignition before lockout It is important to determine the...

Страница 33: ...ator behind module board is in place d Make certain that the transformer voltage is within 24 30 volts A C e Be sure duct connections to furnace are airtight Seal duct collar connections to furnace ca...

Страница 34: ...WIRE UL 3257 P 40 340312 TRANSFORMER THERMOSTAT TIME DELAY RELAY LIMIT SWITCH N C G CAPACITOR BR BR W MOTOR MODULE BOARD ELECTRODE BK BK G W G W DISCONNECT BLOCK BR G Y Y BR GROUNDING TERMINAL SAIL SW...

Страница 35: ...VOIDS WARRANTY OF FURNACE UNIT 100 FIRE CHECKED NOTE ELECTRODE SAIL SWITCH N O SW N C LIMIT Y Y Y GROUNDING TERMINAL BR BK MOTOR VALVE SWITCH N C BL BK BK Y BR R Y O R BL THERMOSTAT R 12 V D C Y 12 V...

Страница 36: ...ARD ELECTRODE GROUNDING TERMINAL BL THERMOSTAT R 12 V D C Y 12 V D C BL THERMOSTAT MOTOR SWITCH SAIL N O ELECTRODE MODULE BOARD V V 340512 14 AWG 105 C THERMOPLASTIC NO 18 250 C RADIX WIRE UL 3257 APP...

Страница 37: ...rts in the top of the burner c Using a black felt tip pen mark a line along top of burner 3 16 from back of lance and parallel with lance Make an additional mark indication center line of the lance Se...

Страница 38: ...r it is important for the electrode to be positioned properly over the top of the burner When replacing the electrode or should you be experiencing ignition type problems the electrode should be posit...

Страница 39: ...t if a furnace has not been used it will not require cleaning NOT SO A furnace which has not been used for some time could be more in need of cleaning than a furnace which has been used extensively Du...

Страница 40: ...676 Broadway Street Dayton Tennessee 37321 423 775 2131 Fax 423 775 7015 www RVComfort com All information published in this manual is subject to change without notice Suburban Division...

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