Williamson-Thermoflo SCH High Boy, SCL Low Boy Manual Manual
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Sealed Combustion Oil Furnaces
SCH High Boy
SCL Low Boy
KEEP THESE INSTRUCTIONS
WITH FURNACE FOR FUTURE
REFERENCE.
DANGER
ARNIN
ARNIN
ARNIN
CAUTION
ARNIN
Hazards that will cause severe personal injury,
death or substantial property damage.
Hazards that can cause severe personal injury,
death or substantial property damage.
INSTALLER – Read all instructions before
installing. Read page 2 first. Follow all instructions
in proper order to prevent personal injury or death.
• Consider ducting, fuel supply, venting and
installation when determining furnace location.
• Any claims for damage or shortage in shipment
must be filed immediately against the transportation
company by the consignee.
Do not store or use gasoline or other flammable
liquids or vapors near this furnace or any other
appliance.
Ventilate house while operating furnace for the first
time. Odors may be emitted for a brief period.
Do not alter this furnace in any way. The
manufacturer will not be liable for any damage
resulting from changes made in the field to the
furnace or its components or from improper
installation. Failure to comply could result in severe
personal injury, death or substantial property
damage.
Hazard definitions
Furnace Manual
Contents
Read this first!............................................................................2
1. Prepare furnace location............................................................ 3
2. Prepare furnace and place in position .......................................5
3. Connect supply and return ducts............................................... 6
4. Venting – Sealed Combustion System ......................................9
5. Connect fuel oil piping..............................................................15
6. Wire furnace and burner.......................................................... 16
7. Start-up.................................................................................... 18
8. Checkout procedure.................................................................19
9. Troubleshooting....................................................................... 21
10. Service and maintenance ........................................................22
11. Components and replacement parts........................................ 25
12. Dimensions and ratings ...........................................................34
13. Owner’s information ................................................................. 38
CAUTIO
NOTICE
Page
Hazards that will or can cause minor personal
injury or property damage.
Special instructions on installation, operation or
maintenance that are important but not related to
personal injury or property damage.
ARNIN
ARNIN
NOTICE
USER – Please read the following. Failure to
comply could result in severe personal injury, death
or substantial property damage.
• This manual is for use only by your qualified
heating installer / service technician.
• Please see the Owner’s information only, on back
page of this manual.
• Have the furnace serviced by a qualified service
technician, at least annually.
This manual must only be used by a qualified
heating installer / service technician. Furnace and
burner must be installed and serviced only by a
qualified heating installer / service technician.
Failure to comply could result in severe personal
injury, death or substantial property damage.
When calling or writing about the furnace, please
refer to furnace model number and serial number
shown on the rating label. You may list the serial
number and model number in the space provided on
the “Installation and service certificate” found on
page 20.
670-000-006-1007
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READ THIS FIRST!
ARNIN
Service and maintenance
1. To avoid electric shock, disconnect electrical supply before
performing maintenance.
2. To avoid severe burns, allow furnace to cool before performing
maintenance.
3. Perform service and maintenance as described in this manual
and the burner manual.
4. Do not attempt to make adjustments to the blower or motor while
the furnace is in operation. Disconnect power to the furnace and
be sure all parts have stopped moving before attempting
adjustments or maintenance.
5. The burner must be set up and adjusted using combustion test
instruments. Visual examination of the flame alone cannot
determine combustion performance.
Operation
6. Do not use the furnace as a construction heater.
7. Do not operate any furnace if the heat exchanger is damaged,
corroded or pitted. Toxic flue products could enter the air
stream.
8. Do not jumper, attempt to by-pass or override any limit control.
9. Do not block flow of combustion or ventilation air to furnace. Do
not block or obstruct the air openings in the furnace casing.
10. Do not store or use combustible materials, gasoline, or other
flammable liquids or vapors in the furnace area.
11. Do not operate the furnace if the furnace area will be exposed to
air contaminants.
12. Should overheating occur, do not turn off or disconnect electrical
supply to furnace. Instead, shut off the oil supply at a location
external to the appliance, if possible.
13. Do not use this furnace if any part has been under water.
Immediately call a qualified service technician to inspect the
furnace and to replace any part of the furnace, control system or
burner that has been under water.
14. Do not operate furnace if temperature rise through heat
exchanger exceeds 85
NOTICE
Installation –
1. Be sure to level the furnace, using a spirit level on the front and
one side. If the furnace is not level, oil can drip into the
combustion chamber after burner cycling, causing fouling of the
heat exchanger and the burner head.
2. Make sure all legs are in contact with the floor to distribute the
load and prevent the possibility of undue noise or vibration.
Failure to adhere to the guidelines below can result in severe personal injury, death or substantial property damage.
o
F.
Apply the following suggestions to prevent unsatisfactory operation of the furnace.
15. Inspect, clean and replace (if necessary) return air filter
regularly.
16. Do not obstruct return air grills or supply air outlets.
17. Supply only #2 fuel oil to the burner. Never attempt to use
gasoline, a mixture of gasoline and oil, waste fuel, refuse or any
other substance in the burner of furnace.
Installation
18. Do not block flow of combustion or ventilation air to furnace. Do
not block or obstruct the air openings in the furnace casing.
19. Connect furnace only to a functional vent system in good
condition. Place the furnace so as to allow proper venting, with
the shortest possible venting and minimum number or elbows.
20. Always connect and seal a return air duct to the furnace unless
the furnace is located in a large space, such as an unpartitioned
basement. Route the return air duct to an adjacent room if no
return air manifold is used.
21. Install furnace maintaining minimum clearances for service and
separation from combustible surfaces described in this manual.
22. Install, start-up, service and maintain burner per instructions in
this manual and the burner manual.
23. Verify burner is properly inserted through the combustion
chamber opening.
24. Furnace must be installed so that burner and control system
components are protected from dripping, spraying water or rain
during operation or service.
25. If installing an air conditioning evaporator coil, install the coil
downstream of, or in parallel with, the furnace to prevent
condensation in the furnace heat exchanger. If the coil is in
parallel, provide means to prevent flow of chilled air into the
furnace, including an interlock to prevent simultaneous operation
of heating and air conditioning.
3. Avoid locating return grills in rooms that may contain undesirable
odors.
4. Never locate a return air grill closer than approximately 20 feet
from the furnace.
5. Locate the furnac e near the center of the supply and return duct
systems.
6. Always check the size of the ducts on a replacement installation,
particularly if adding air conditioning.
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SCH & SCL Oil Furnaces – Furnace Manual
1 Prepare furnace location
Pre-installation checklist
Verify code compliance
Local, state, and national codes, laws, regulations and
ordinances
NFPA-31, Installation of Oil-Burning Equipment
National Electrical Code
All local codes and/or regulations take precedence over the
instructions in this manual and should be followed accordingly.
NOTICE
SCH & SCL furnaces, their burners and controls have
met safe lighting and other performance criteria when
they underwent tests, specified in Underwriters
Laboratories Standard UL727.
Check location and furnace specifications
Furnace heating capacity
Space is large enough to provide required clearances
Verify the installation will meet the requirements of this manual:
Clearances (page 3)
Combustion/ventilation air openings (page 4)
Supply air duct (page 7)
Return air duct (page 7)
Vent system (page 9)
Fuel oil piping (page 15 plus burner manual)
Electrical connection (page 15)
Clearances
Minimum clearances to combustible materials
1. Install the furnace, ductwork and vent such that no combustible
surface is closer than indicated in Table 1.
Table 1 Minimum clearances
Service accessibility clearances are
recommended minimum dimensions to
allow access to furnace components
(motor, blower, filters, etc.)
Side of furnace or supply plenum
Rear of furnace
Top of furnace casing or supply
plenum (warm-air duct within 6 ft. of
furnace)
Bottom of furnace
Front of furnace
Flue pipe
Minimum clearances from furnace, ductwork and vent
SCH-105 (3” vent dia.) SCH-160 (4” vent dia.) SCL-105 (3” vent dia.) SCL-160 (4” vent dia.)
To
combustible
construction
1"
For
service
accessibility
24"
(one side)
1" 24" 18" 24" 1" 24" 18" 24"
1" --- 2" --- 1" --- 2" --0" --- 0" --- 0" --- 0" ---
1" 24" 24" 24" 1" 24" 24" 24"
REFER TO SECTION 4 (VENTING)
NOTICE
Flue pipe clearances must take precedence over
jacket clearances (listed below).
Service accessibility clearances
1. Provide no less than the minimum clearances given in Table 1 to
ensure the furnace can be properly operated, serviced and
maintained.
2. Always apply whichever clearance is LARGER – combustible
construction or service accessibility.
Flooring and foundation
Flooring
SCH & SCL furnaces are approved for installation on combustible
flooring, but must never be installed on carpeting.
ARNIN
Do not install furnace on carpeting even if foundation
is used. Fire can result, causing severe personal
injury, death or substantial property damage.
Foundation
1. Provide a solid brick or minimum 2 inch thick concrete
foundation pad if any of the following is true:
• the floor can become flooded.
• the furnace mounting area is not level.
Residential garage installations
Take the following special precautions when installing the furnace in
a residential garage. Il the furnace is located in a residential garage:
• Mount the furnace a minimum of 18 inches above the floor
of the garage.
• Locate or protect the furnace so it cannot be damaged by a
moving vehicle.
To
combustible
construction
1"
For
service
accessibility
24"
(one side)
To
combustible
construction
1"
For
service
accessibility
24"
(one side)
To
combustible
construction
1"
For
service
accessibility
24"
(one side)
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SCH & SCL Oil Furnaces – Furnace Manual
1 Prepare furnace location (continued)
Vent pipe clearances
Table 2 Minimum clearances – side-wall venting
CLEARANCES
Vent pipe, up to vent terminal 3"
Vent terminal Zero
Figure 1
ARNIN
Do not enclose venting in a ceiling or combustible
structure.
Vent terminal location
Select a location for the vent terminal in accordance with all local
and national codes. The following requirements shall be considered
to be minimum requirements that can be overridden by stricter local
and national codes.
Following are excerpts from the NFPA 31 code:
The vent shall terminate at least 3 ft. above any air inlet to the
structure that is within 10 ft. of the termination point.
The combustion air inlet and flue gas outlet of a direct vent
appliance shall terminate at least 1 ft. (0.3 m) from the soffit of the
roof of the structure and at least 3 ft. (0.9 m) from an inside corner of
an L-shaped structure.
The vent terminal shall be located at least 1 ft. (0.3 m) from any
door, window or air inlet to the structure. The flue gas outlet terminal
shall also terminate at least 1 ft. (0.3 m) above grade.
The vent shall not be less than 7 ft. ( 2.1 m) above grade, when
located adjacent to public walkways.
The vent shall terminate at least 5 ft. (1.6 m) from the vent outlet of a
supply tank.
CAUTIO
Most codes have a notwithstanding clause which
states that, products of combustion shall not enter
the dwelling under any circumstances, even if all
other code requirements as to construction and
location have been complied with. The installer is
ultimately responsible to do whatever is necessary
to ensure that flue gases do not enter the dwelling.
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SCH & SCL Oil Furnaces – Furnace Manual
2 Prepare furnace and place in position
Inspect & prepare furnace
Remove furnace from carton
Remove the furnace from its shipping carton and inspect thoroughly.
Remove access panels to inspect the furnace interior.
NOTICE
ARNIN
Immediately file a claim with the transportation
company if you discover concealed damage.
Do not install or attempt to operate the furnace if the
heat exchanger, burner or controls have been
damaged. Immediately contact your furnace
supplier. Operating a damaged furnace could result
in severe personal injury, death or substantial
property damage.
Prepare furnace (SCH models)
SCH furnaces require cutting the return air opening into one side of
the furnace. Carefully cut the opening on the correct side of the
furnace, using the four knock-outs on the side as guides.
Prepare burner
Remove the burner from its shipping carton and inspect thoroughly.
Read the burner manual and follow instructions for preparing and
installing the burner.
Install the correct nozzle for the required firing rate, using the burner
manual and the information in Section 12 of this manual. Follow the
burner manual instructions for nozzle installation. Verify the correct
setting of electrodes after nozzle and burner oil tube assembly are in
place.
Openings in walls, floor & ceiling
General
Ensure that the finished door opening to the furnace room is large
enough to install and remove the furnace, water heater or any other
appliances in the room.
Before placing furnace in a closet or small room, cut all openings
required in floor, ceiling or walls for ducts and vent. This will simplify
the work and prevent construction dust from entering the furnace
heat exchanger.
ARNIN
Duct locations and sizing
Verify the size of the supply and return duct system is sufficient for
the application. The pressure drop through the duct system must not
exceed 0.25 inch water column. The total drop through the duct
system and air conditioning evaporator coil (if used) must not
exceed 0.5 inch water column.
Verify that all clearances to combustible construction
and as needed for service accessibility will be met.
The vent must be no closer than 3 inches to any
combustible surface. Failure to comply could result
in severe personal injury, death or substantial
property damage.
Openings in walls, floor… (continued)
See suggested duct sizing in this manual. For more detailed sizing
information refer to ACCA Manual D.
Return air duct
You must install a return air duct, sealed to the furnace, even if no
return manifold is used. The only exception is when the furnace is
located in a large unpartitioned room, such as a basement. (A room
whose volume is at least 50 cubic feet per 1,000 BTU/h input of all
appliances in the room is considered large). For large rooms, return
air may be taken directly at the furnace, without a return air duct. No
return air register should be within 20 feet of the furnace.
Cut the required opening for the return air duct in the wall (or floor or
ceiling) of the room before placing the furnace.
Install filter
Install return air filter of the size listed in Section 12.
You will need to install a filter rack provided with the furnace for
Model SCH only.
NOTICE
Verify that the filter will be easily accessible for
removal after the furnace is in place.
Install furnace and burner
Place furnace
Place the furnace in the desired location. Measure clearances and
verify per page 3 of this manual.
Using a spirit level on the front and one side of the furnace, level it
using the 4 or 6 levelling legs. Make sure each of the legs is firmly in
contact with the floor.
Inspect combustion chamber
Inspect the combustion chamber. Verify it is in good condition and
correctly in position inside the heat exchanger. The burner opening
in the chamber must align with the burner heat exchanger opening.
ARNIN
Insert burner
Following the burner manual instructions, install the burner and its
gasket in the burner opening. Make sure the burner is aligned with
the opening in the combustion chamber and that burner insertion
corresponds to the value specified in Section 12.
Secure the burner in place with the three nuts and washers
provided. Wire and pipe fuel to the burner per burner manual and
this manual.
Burner orientation
Always keep the motor shaft in a horizontal position
The combustion chamber is constructed of ceramic
fiber materials See the WARNING information on
page 23 of this manual. Comply with these
instructions when handling any ceramic fiber or
fiberglass materials. Failure to adhere to these
guidelines could result in severe personal injury or
death.
670-000-006-1007
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SCH & SCL Oil Furnaces – Furnace Manual
3 Connect supply and return ducts
Duct sizing
Determine air flow CFM
The temperature rise through the furnace must not exceed 85o F and
should be at least 55°F for comfort. When calculating air flow,
assume a temperature rise of 70°F.
The sensible heat temperature change for cooling would be
approximately 27-30°F. Actual temperature change will be
approximately 18-21°F due to humidity of the air.
To calculate the sensible heat temperature change (ΔT), you can
use the formula:
ΔT = BTU/h/(1.1 x CFM) Eq. 3-1
To calculate air flow when you know temperature change (ΔT), you
can use:
CFM = BTU/h/(1.1 x ΔT) Eq. 3-2
You can estimate air flow using the following rules of thumb:
Heating: 14 CFM per 1,000 BTU/h output Eq. 3-3
Cooling: 400 CFM per ton air conditioning Eq. 3-4
Determine the required air flow based on whichever is larger –
heating mode or air conditioning mode.
Examples:
1. What would the temperature rise be for a 100,000 BTU/h output
furnace with an air flow rate of 1200 CFM?
Use Equation 3-1 since you know CFM and BTU/h:
ΔT = 100,000/(1.1 x 1200) = 76°F
• The temperature rise would be 76°F.
• If the air enters the furnace at 70°F, it would leave the
furnace at 70°F + 76°F = 146°F.
2. What would the air flow be to obtain a 70°F rise through a
120,000 BTU/h output furnace?
Use equation 3-2 since you know ΔT and BTU/h:
CFM = 120,000/(1.1 x 70) = 1,558 CFM
• The air flow would have to be 1,558 CFM to obtain a
temperature rise of 70°F.
3. Estimate the required air flo w for a 75,000 BTU/h output fu rnace
installed with a 2-ton air conditioning evaporator coil.
Heating mode air flow (use Equation 3-3):
CFM = 75 x 14 = 1,050 CFM
Cooling mode air flow (use Equation 3-4):
CFM = 2 x 400 = 800 CFM
• The larger number is 1,050 CFM (heating), so the duct
system should be sized for 1,050 CFM.
• The supply duct would need to be 16" round or a rectangular
equivalent such as 8" x 25" or 12" x 16", using Table 4, page
7.
4. Estimate the required air flow for the same furnace installed with
a 4-ton air conditioning evaporator coil.
Heating mode air flow is still 1,050 CFM.
Cooling mode air flow (use Equation 3-4):
CFM = 4 x 400 = 1,600 CFM
• The larger number is 1,600 CFM (cooling), so the duct
system should be sized for 1,600 CFM.
• The supply duct would need to be 18" round or a rectangular
equivalent such as 8" x 36" or 12" x 21", using Table 4, page
7.
6 670-000-006-1007
CAUTIO
Always check the size of existing ducts, particularly
if you are adding air conditioning. The air pressure
loss through the cooling evaporator coil reduces
available air flow. If the ducts are too small as well,
the system may not work satisfactorily on either
heating or cooling.
Determine duct dimensions
Table 4, page 7 and Table 5, page 8, provide typical round and
rectangular duct sizes for rectangular and flat oval galvanized ducts.
Do not apply these tables to size ductwork if the total equivalent
length of the duct exceeds approximately 100 feet. For longer
systems or for duct board, fiberglass-lined or flexible duct sizing, use
the ACCA Manual D or the ACCA duct sizing slide rule. These
tables are based on pressure loss of approximately 0.10 inch water
column per 100 feet equivalent length of duct.
Use Table 3 below to size or check sizing of take-offs to supply
registers or return grills.
Verify the size and type of registers, diffusers and grills from the
manufacturer’s ratings. Do not exceed the recommended flow rate.
The pressure drop allowance for each should not exceed
approximately 0.05 inch water column.
Install a return air filter, sized per specifications in Section 12.
Use only a return air filter mounted to the furnace. Do not add
additional filters unless the duct system is carefully sized to allow for
the additional pressure drop.
Table 3 Suggested maximum flow to runouts
TAKE-OFF SIZE
(Inches)
Sheet metal or ductboard
5 Round 60 45
6 Round 100 75
7 Round 140 110
8 Round 210 160
3 ¼ x 8 Stack 70 55
3 ¼ x 10 Stack 100 75
3 ¼ x 14 Stack 140 110
2 ¼ x 12 Stack 70 55
2 ¼ x 14 Stack 90 70
Flexible duct (keep bends to minimum)
6 Round 55 40
8 Round 120 90
10 Round 200 160
12 Round 320 250
14 Round 480 375
16 Round 660 530
18 Round 880 680
20 Round 1200 900
SUPPLY RETURN
CFM
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SCH & SCL Oil Furnaces – Furnace Manual
3 Connect supply and return ducts (continued)
Duct sizing (continued)
Table 4 Typical duct sizing for systems not over 100 feet equivalent length – round or rectangular galvanized
CFM
(For approximately 0.10 inch w.c. in a typical residential installation of galvanized metal duct)
Round
duct
diameter4567891012141618202224262830
(inches)xxxxxxxxxxxxxxxxx
45
65
100
150
200
250
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2200
2400
2600
2800
3000
3500
4000
ARNIN
Rectangular duct equival ent si zes
Mini mum width
4
5
6
7
8
9
9
10
12
12
12
14
14
16
16
16
16
18
18
18
18
18
20
20
20
22
22
22
22
24
26
444-------------6544-- - - --- - -----
865544-- - -- -----1297655544- -- ----141198766544- - ----181310987665544----20 15 12 10 9 8 7 6 6 5 5 4 4 - - - 2619151311109876655544322318151312119876665555
3828221815131210987766655
46322520171514111098777666
523628231917151311109887766
5841312521191714121110988777
6445342823201815131110998877
72493830252219161412111099887
-5441332724211715131211109988
- 58443529252218161412111010 9 9 8
- 6347383127241916141312111010 9 9
- 685140342925201715141212111010 9
- 725443363027211816141312111110 9
- - 58 45 38 32 28 23 19 17 15 14 13 12 11 10 10
- - 61 48 40 34 29 24 20 17 16 14 13 12 11 11 10
- - 64 51 42 35 31 25 21 18 16 15 14 13 12 11 11
- - 68 53 44 37 32 26 22 19 17 15 14 13 12 12 11
- - - 59 48 41 35 28 23 20 18 16 15 14 13 12 12
- - - 64 52 44 38 30 25 22 19 17 16 15 14 13 12
- - - 69 56 47 41 32 27 23 21 19 17 16 15 14 13
----61514434292522201817151514
----65544737302623211917161514
-----635442342926232119181716
-----726147393329262321201918
Do not apply this table for duct systems over approximately 100 equivalent feet length. For longer systems or systems using
other duct materials, refer to ACCA Manual D. Incorrectly sizing duct systems can result in unsafe or uncomfortable
operation.
(inches)
Typical duct sizing
for duct height s
(inches)
of :
670-000-006-1007
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SCH & SCL Oil Furnaces – Furnace Manual
3 Connect supply and return ducts (continued)
Duct sizing
Table 5 Typical duct sizing for systems not over 100 feet equivalent length – round or flat oval galvanized
CFM
45
65
100
150
200
250
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2200
2400
2600
2800
3000
3500
4000
ARNIN
(continued)
Typical duct sizing
(For approximately 0.10 inch w.c. in a typical r esidential i nstallation of galvanized metal duct)
Round
duct
diameter3456789101214161820
(inches)xxxxxxxxxxxxx
10
12
12
12
14
14
16
16
16
16
18
18
18
18
18
20
20
20
22
22
22
22
24
26
Do not apply this table for duct systems over approximately 100 equivalent feet length. For longer systems or systems using
other duct materials, refer to ACCA Manual D. Incorrectly sizing duct systems can result in unsafe or uncomfortable
operation.
Flat oval duct equi val ent si zes
Mini mum width
4
5
6
7
8
9
9
65-----------
86----------1187---------161198--------211511108-------26181411109------302016131110------40262016141211-----4932241916141312----5938282219161513----694432252118161513----
-5036292420181614----
-5641322622201815----
- 634535292422191715 - - -
- 694938312623211816 - - -
- 755341332825221917 - - -
- - 58 44 36 30 26 24 20 18 - - -
- - 62 47 38 32 28 25 21 18 17 - -
- - 66 50 41 34 30 26 22 19 18 - -
- - 71 54 43 36 31 28 23 20 18 - -
- - - 57 46 38 33 29 24 21 19 - -
- - - 60 48 40 35 31 25 22 20 - -
- - - 63 50 42 36 32 26 23 21 19 -
- - - 67 53 44 38 33 27 24 21 20 -
- - - 73 58 48 41 36 29 25 23 21 -
----635244393227242221
----685648423429252322
-----6051443630272423
-----6454473832282624
------63544336322826
------71614840353129
(inches)
for duct heights
(inches)
of :
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SCH & SCL Oil Furnaces – Furnace Manual
4 Venting – Sealed Combustion System
ARNIN
Failure to follow all instructions can result in flue gas
spillage and carbon monoxide emissions, causing
severe personal injury or death.
The furnace can be side-wall vented without the use of a side-wall
power vent, using a venting system with the high static pressure
Beckett AFII and Riello 40-BF oil burners. Outdoor combustion air
must be directly connected to the burner or the venting system will
not function..
The notable characteristics of the vent system are as follows:
a) Certified for use of the following materials for ducting the intake
air from the terminal to the burner: Schedule 40 PCV DWV,
Schedule 40 ABS DWV and ASTM D-2729 sewer pipe;
b) One hole of minimal size (6 inches) is required to be cut into
the side-wall and the terminal is designed to fit through a
minimum 2 x 8 joist space.
c) Incorporates a vent blockage safety shutdown system. If the
vent or intake opening ever becomes partially or fully blocked,
the burner will shut down before a #1 smoke condition occurs;
d) The intake vent circuits within the terminal can be accessed for
cleaning.
There are three main components to the venting system:
- Vent terminal kit VTK-1 for the 105 series models or VTK-2 for the
160 series models.
- Flexible insulated venting material for IFV3 for the 105 series
models or IFV4 for the 160 series models
- Field supplied 3 inch PVC or ABS intake piping.
ARNIN
Poisonous carbon monoxide gas hazard.
Even though the flexible venting is insulated, it must
not run through an unheated space.
To do so can cause residual condensation inside the
stainless steel liner, which may eventually perforate
the liner and allow vent gases to enter the dwelling,
which can result in personal injury and/or death or
property damage.
Insulated flexible venting
The certified venting materials come in 3 lengths, Model # IFV3-15,
IFV3-23 and IFV3-30 for the 105 model series or IFV4-15, IFV4-23
and IFV4-30 for the 160 model series, correspond to 15, 23 and 30
feet of continuous lengths of vent. The vent construction is coaxial
and incorporates a stainless steel corrugated, flexible liner,
surrounded by a thick insulation blanket and covered with an outer
layer of flexible corrugated aluminum sleeve to protect the insulation.
Splicing vent lengths together is prohibited. The maximum and
minimum continuous vent lengths permitted for installation are:
5 feet minimum 30 feet maximum
Side-wall venting installation
ARNIN
Cut and abrasion hazard.
Always wear protective gloves and eye protection
when handling the vent material.
The process of cutting and fitting the flexible vent
material exposes the installer to sharp edges that can
cause severe cuts to the skin.
670-000-006-1007
Connection to the furnace breach
1. Determine in which direction the venting will be routed from the
furnace;
2. The flexible venting has 4 pieces of corrugated spi n sleeve that
has been temporarily screwed over top of it. Remove the spin
sleeve completely by unscrewing it in a counter-clockwise
direction;
3. Using tin snips, cut the aluminium outer sleeve back by 5
inches on the IFV Series vent (see Figure 1.1). Ensure the
snips are well adjusted and sharp or the cut end of the venting
will be too jagged to start the threads of the spin sleeve (see
Figure 1.1).
4. Prepare the furnace breach end of the insulated flex vent by
first screwing the spin sleeve onto the corrugated aluminum
jacket (see Figure 1.2) until the trailing edge of the spin sleeve
is about 12 inches from the end of the vent (see Figure 1.3).
5. Pull the insulation back to expose the corrugated stainless steel
core.
6. Cut the corrugat ed stainless steel core back by 3 inches on the
IFV Series vent. You should now have about 3 inches of
insulation hanging out past the stainless steel core (see Figure
1.4);
7. Push the stainless steel core onto the breach pipe as far as it
will go (see Figure 1.5) and mechanically attach the vent to the
breach using three of the #8 x 1/2" self-drilling screws provided
with the VTK Series kit. The screws should be equally spaced
around the circumference of the stainless steel core, starting
with the first screw at top dead center. Start the drill point of the
screws in the valleys of the corrugations at 3/8"-5/8" back from
the end of the stainless steel core, so the screw heads can be
properly sealed in the forthcoming operations (see Figure 1.6);
8. With the stainless steel core now firmly attached to the breach,
apply sealant all around the joint, where the corrugated
stainless steel core meets the smooth outer surface of the
breach pipe (see Figure 1.7). In other words, the sealant must
be centered over the joint;
9. Also, make sure that the heads of the self-drilling, stainless
steel screws are completely covered with the sealant;
10. Two stainless steel band clamps are provided with the VTK
Series kits. Position one stainless steel band clamp over the
sealant, so that the edge of the clamp closest to the breach
lines up with the sealant that is closest to the breach. Ensure
that the band will close with an action of one strip sliding over
the other - not under the gear head of the draw clamp (see
Figure 1.8). Tighten the band clamp with considerable torque to
cause the sealant to be squeezed into all crevices and to ooze
out of the edge of the clamp closest to the breach (see Figure
1.9);
11. The seal is permanent and should never need to be broken,
since the breach plate can be removed for cleaning and
inspection using the 4-bolt joint;
12. Tuck the vent insulation into the breach collar;
13. Screw the spin sleeve tightly into the breach collar for a finished
appearance. Wrap the other end of the spin sleeve with
aluminum tape to cover any metal burrs that may be present
(see Figure 1.10);
14. Bend the venting into the desired radius coming off the breach.
9
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SCH & SCL Oil Furnaces – Furnace Manual
4 Venting – Sealed Combustion System (continued)
Connection to the vent terminal
1. Prepare the terminal end of the insulated flex vent b y first
screwing the spin sleeve onto the corrugated aluminum
jacket until the trailing edge of the spin sleeve is about 10
inches from the end of the vent;
2. Using sharp tin snips, cut the aluminum outer sleeve back
by 5 inches on the IFV Series vent;
3. Pull the insulation back to expose the corrugated stainless
steel core;
4. Cut the corrugated stainless steel core back by 3 inches on
the IFV Series vent. You should now have about 3 inches of
insulation hanging out past the stainless steel core;
5. Push the stainless steel core onto the pipe on the back of
the terminal as far as it will go and mechanically attach the
vent to the terminal using three of the #8 x 1/2" self-drilling
screws provided with the VTK Series kit. The screws should
be equally spaced around the circumference of the stainless
steel core, starting with the first screw at top dead center.
Start the drill point of the screws in the valleys of the
corrugations at 3/8"-5/8" back from the end of the stainless
steel core;
6. With the stainless steel core now firmly attached to the
terminal, apply sealant all around the joint where the
corrugated stainless steel core meets the smooth outer
surface of the breach pipe (see Figure 1.7). In other words,
the sealant must be centered over the joint;
7. Also, make sure that the heads of the self-drilling, stainless
steel screws are completely covered with the sealant;
8. Position the other stainless steel band clamp over the
sealant so that the edge of the clamp closest to the terminal
lines up with the edge of the sealant that is closest to the
terminal. Tighten the band clamp with considerable torque to
cause the sealant to be squeezed into all crevices and to
ooze out of the end of the clamp closest to the terminal (see
Figure 1.11);
9. The seal is permanent and should never need to be
disconnected as the end of the terminal can be opened for
cleaning and inspection by removing the screened end-cone
assembly. Tuck the vent insulation into the recess in the
terminal body;
10. Screw the spin sleeve tightly into the recess for a finished
appearance. Wrap the other end of the spin sleeve with
aluminum tape to cover any metal burrs that may be present
(see Figure 1.12);
11. Bend the venting into the desired radius coming off the
terminal.
Installing terminal in the wall
1. Cut a 6 inch hole in the side-wall in accordance with the
location considerations outlined in the previous section;
2. Fasten the wall plate to the inside-wall using 4 field-provided
fasteners, appropriate for the material behind the wall plate.
Depending on the angle of access, the pressure control
bracket may need to be removed to access the top right wall
plate screw hole. For concrete and block, Tapcon™ screws
or equivalent are recommended. Install the wall plate so that
the top of the hole in the wall plate is positioned 1/8” lower
than the top of the 6 inch hole in the wall. This will
accommodate the proper downward slope of the terminal, in
the direction from the inside to the outside;
10 670-000-006-1007
3. Remove the 2 screws fastening the end cone in place and
remove the cone;
4. Remove the 2 screws fastening the stabilizer shroud in
place and remove the stabilizer shroud;
5. Insert the main body of the terminal through the wall plate so
that the end of the terminal extends about 2 inches past the
outside wall;
6. Install the stabilizer shroud and replace the two mounting
screws. (see Figure 1.13);
7. On concrete and block wall installations in particular, if it
appears that the flange on the back of the stabilizer shroud
is not large enough to cover the irregularities in the hole, a
field fabricated wall plate can be constructed out of 304,
316, or 316L stainless steel;
8. Silicone seal the circumference of the joint where the
stabilizer shroud connects to the main body of the terminal;
9. Apply caulking to the back plate of the stabilizer shroud and
push the terminal back firmly against the wall, making sure
the pressure switch is located at the top, in a horizontal
position;
10. While pushing down gently on the top of the stabiliser
shroud, install the 3 stainless steel 2 inches screws provided
with the kit to secure the back of the shroud to the wall. Do
not overtighten the screws or it will distort the stabiliser
shroud. The screws will not be necessary in a concrete or
block wall as the mortar can provide positive positioning;
11. Tighten the clamp on the wall plate to secure the terminal in
place;
12. Apply more caulking all around the seam where the
stabilizer shroud meets the wall. It is important to have a
good seal to prevent water from entering the dwelling (see
Figure 1.14). A considerable amount of caulking may be
necessary for irregular wall surfaces such as lapped siding;
13. Install the end cone and replace the two mounting screws;
14. Support the vent and intake air piping so that a 1/4" to 1/2"
downward slope (toward the outside) results for proper
drainage out the terminal body.
Ducted outdoor combustion air (Sealed Combustion System)
The burners are set up to duct outside combustion air directly to
the burner: the Beckett AFII and the Riello 40-BF for side-wall
venting.
CAUTIO
The venting system is a sealed system and completely isolates
the furnace from the interior of the building. The burner is totally
unaffected by any pressure fluctuations within the building
makes it ideal for tight home construction.
The use of ducted outside combustion air is
mandatory with side-wall venting systems. The
system operates on a balanced flue principle
and will not function properly if the combustion
piping is not attached and sealed at all
connections between the vent terminal and
burner inlet.
which
SCH & SCL Oil Furnaces – Furnace Manual
4 Venting – Sealed Combustion System (continued)
The venting system requires additional parts, which are not included
with the kit. These parts must be constructed of 3 inch Schedule 40
PVC, PVC-SWV, 26-SDR, SDSR-21, Septic Sewer Pipe or ABS
plastic pipe, fittings and sealant. Also, installation procedures, piping
and fittings must conform to the following ANSI/ASTM standards:
PVC ASTM D-1785
SDR-26, SDR-21 ASTM D-2241
Septic Sewer Pipe ASTM D-2729
PVC-DWV ASTM D-2665
PVC Primer and Solvent Cement ASTM D-2564
ABS Pipe and Fittings ASTM D-2235
Procedure for Cementing Joints ASTM D-2855
Additional parts required (not included in VTK kit)
a. 3 inch elbow fitting as required;
b. 3 inch plastic pipe;
c. 3 inch 90° elbow, female-female (for terminal);
d. 3 inch female to 2 inch female reducer (Riello 40-BF burner
only);
e. 2 inch 90° elbow, street t ype, female-male (Riello 40-BF burner
only);
f. 3 inch female-female PVC or ABS coupling, not sewer pipe
(Beckett AFII burner only);
g. Transition bushings to go from PVC or ABS to ASTMD-2279
Septic Sewer Pipe (if applicable).
If PVC fittings are mixed with ABS fittings, use solvent cement that is
approved for bonding the two plastics.
Intake pipe length
The venting system has been certified for 120 equivalent feet o f 3
inch intake pipe. Count a 90° elbow as 10 equivalent feet and a 45°
elbow as 5 equivalent feet in the calculation.
For example:
1 length of 5 feet = 5 equivalent feet
2 lengths of 10 feet = 20 equivalent feet
3 elbows, 90° = 30 equivalent feet
2 elbows, 45° = 10 equivalent feet
1 elbow, 90° (terminal) = 10 equivalent feet
1 elbow, 90° (Riello burner)
Total: = 85 equivalent feet, which is less
than 120 feet and therefore acceptable.
Intake pipe installation
Obtain the necessary additional parts, to complete the installation
and start by piping at the burner. If the optional vestibule was
installed, remove the appropriate knockouts in the side panels of the
vestibule. The lower 5 inch knock outs in the right-hand panel is
used for the Beckett AFII burner. The higher 5 inch knockouts on the
right and left-hand panels are for right or left connection to the Riello
40-BF burner.
= 10 equivalent feet
Beckett AFII burner
Remove the burner intake cover by removing 3 screws securing it in
place. Discard the cover and screws. Apply silicone liberally around
the end of a 3 inch coupling and fully insert the siliconed end into the
burner opening. Fasten securely with 3 self-tapping sheet metal
screws.
Riello 40-BF burner
Fully insert the female end of the 2 inch, 90° street elbow into the
combustion air fitting on top of the burner. Fasten securely with 3
self-tapping sheet metal screws. Cement the 2 inch end of the 3 inch
female to 2 inch female reducer into the male end if the 2 inch 90°
street elbow. If the parts are not easily obtained, use a 3 inch 90°
street elbow with the male end fitted over the combustion air fitting.
The fitting will have to be silicone sealed, as the fit will be a bit loose.
Fasten securely with 3 self-tapping sheet metal screws.
Terminal connection
Insert the 3 inch 90° female-female elbow onto the stainless steel air
intake fitting located on the right side of the vent terminal (viewed
from the rear). Fasten with 3 self-tapping sheet metal screws.
Intermediate piping
Pipe as required between the terminal and the burner. Ensure that
the 3 inch piping is routed and supported in accordance with local
and national codes. Obey minimum furnace clearances to
combustibles when routing any section of 3 inch piping in the vicinity
of the furnace. If Septic Sewer Pipe is to be used, install transition
bushings at the 3 inch female ends of the fittings at the burner and at
the terminal. Transition bushings are readily available and are
required because 3 inch PVC and ABS pipes have a typical outside
diameter of 3.5 inches, whereas Septic Sewer Pipe has a typical
outside diameter of 3.25 inches.
670-000-000/1007 11
SCH & SCL Oil Furnaces – Furnace Manual
12 670-000-006-1007
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