Field Controls 46229000, SWG II AGA Series User Manual

SIDEWALL POWER VENTER KIT

Model: SWG II AGA Series

*Patented

TYPICAL VENTING SYSTEM COMPONENTS

1 - SWG Series Power Venter
1 - CK Series Control Kit

OPTIONAL SYSTEM COMPONENTS

SWG SERIES THROUGH-WALL EXTENSION KIT: For installation in wall thickness over 8 inches. Models PEK-4

through PEK-8 are available.

FOR MOST MULTIPLE HEATING EQUIPMENT SYSTEMS: One CK Series Control Kit for each appliance. Except for

a gas furnace and a water heater multiple venting system, use the CK-90 Series Control Kit.

CONTENTS

Installation Instructions................................. 2

Air Flow Adjustments.................................... 7

General Installation Inspection ..................... 8

GENERAL SYSTEM OPERATION

Designed for operation with natural or LP gas appliances.

1. The thermostat (wall thermostat, or aquastat) calls for heat and energizes a relay which activates the
power venter. After the venter motor has come up to speed, the pressure switch closes. This closes the
circuit to the burner and allows the burner to operate.

2. For millivolt controlled water heaters, the gas valve pressure switch activates the power venter at the
same time as the burner fires.

3. After the heating requirement has been satisfied, the thermostat circuit will open and de-activate the
burner and power venter circuit.

4. For venting system equipped with a post purge device, the power venter operates for a period of time
after the burner has shut off to purge remaining flue gases.

CONTROL KITS:

CK-41: For operation with gas-fired furnaces, boilers, unit heaters and water heaters operating with 24 VAC

gas valve. For systems with factory-mounted spillage switches, use the CK-40 Control Kit.

CK-43: For draft induced 24 VAC gas valve systems. Includes a 4" MG-1 draft control and electronic post

purge.

CK-81: For operation with 750 millivolt operated boilers, furnaces, water heaters, pool or spa heaters and

gas-fired fireplaces when operating with remote mounted thermostat. Operated off a 24 VAC
thermostat. For operation off of a 120 VAC thermostat or wall switch, use the CK-80.

CK-90: For operation with a gas-fired furnace or boiler and a 30 millivolt water heater.
CK-91: For gas fired draft induced 24 VAC gas valve systems and a 30 millivolt operated water heater.

Includes a 4" MG-1 draft control and an electronic post purge.

DO NOT DESTROY

THESE INSTRUCTIONS MUST REMAIN WITH EQUIPMENT

Maintenance...................................9

Replacement Parts.........................9

System Information.......................10

INSTALLATION SAFETY INSTRUCTIONS

Page 2

CAUTION: This device must be installed by a qualified installer in accordance with the manufacturer's installation

instructions. Appliances should have a minimum of 75% combustion efficiency or have a maximum measured flue gas

temperature of 550?F at the inlet of the power venter.

1. The power venting system must be installed by a qualified installer. "Qualified
Installer" shall mean an individual who has been properly trained or is a licensed
installer. The installer must write or imprint his name, phone number and date of
installation on the installation tag. The tag should be attached to the system control kit
box or power venter unit. Also, the included adhesive "Warning!" label should be
attached to the Control Kit box, as shown in Figure 1, and the installers name be
written on it. Recording burner and venting system initial operational information is
strongly recommended as a guide for service or burner tune-up. Enter this on the
back page of this manual.

Figure 1

2. Safety inspection of a venting system should be performed before and after installing a power venting system on an
existing or new appliance. Procedures to follow are those recommended by the National Fuel Gas Code,
A.N.S.I.Z223.1, or refer to General Installation Inspection section of this manual.

3. Plan the vent system layout before installation to avoid the possibility of accidental contact with concealed wiring or
plumbing inside walls.

4. Single wall vent pipe (refer to Diagram B) may be used to join an appliance to the venting system, but if proper
clearances cannot be maintained from combustible materials, Class B Vent Pipe should be used for gas appliances
and Class L Type Vent Pipe for oil appliances. Refer to national or local codes for guidelines.

5. Disconnect power supply before making wiring connections to prevent electrical shock and equipment damage.

6. This equipment is designed to overcome minor negative pressure conditions. To ensure extreme negative pressure
does not exist, follow General Installation Inspection of this manual.

7. Heating appliances equipped with draft hoods, such as boilers or furnaces, LP gas appliances and Natural gas
appliances SHOULD have a secondary spillage switch installed. On appliances without draft hoods, it is
recommended that a secondary safety switch such as a WMO-1, GSK, FTS, or TSP-1 be used. Gas-fired 30 millivolt
power systems MUST be equipped with a spillage switch.

8. Air flow adjustment MUST be made to ensure appliance efficiency. This should be done at the appliance exhaust
outlet with a velocity meter, draft gauge or by "match test procedure". A match test is in accordance with National Fuel
Gas Code A.N.S.I.Z223.1, Section 8.6.

9. On gas-fired heating appliances not equipped with a draft hood, a barometric draft control MUST be installed to
regulate proper air flow and fluctuations in the system's air flow during operation. Fluctuations may come from wind
loads on the outlet of the power venter, house depressurization during windy days and the different house ventilation
requirements between summer and winter operation. A gas-fired draft induced system should have a single-acting or
double-acting barometric draft control installed, such as the Field Controls Type MG-1.

10. The power venter must be installed downstream of the appliance draft hood or barometric draft control.

INSTALLATION OF SWG POWER VENTER

Page 3

OIL GAS UNIT SIZING CHART

MAX*

OIL GPH

INPUT

MAX**

BTU/HR.

INPUT

NA 70,000

NA 125,000

1.10 170,000

1.85 290,000

2.65 416,000

MAXIMUM EQUIVALENT FEET OF VENT PIPE

AT MAX.

BTU/HR. INPUT

AT 60% OF MAX.

BTU/HR. INPUT

21 80 3”
50 100 4”

- - -

7 19 3”
21 58 4”
48 100 5”

- 23 3”
35 100 4”
65 100 5”
16 44 4”
51 100 5”
95 100 6”
28 78 5”
68 100 6”

100 100 7”

VENTING WITH

VENT PIPE SIZE

MODEL

SWG-3

SWGII-3

SWG-4

SWG-4HD

SWGII-4HD

SWG-5

SWGII-5

SWG-6

SWGII-6

28 78 6”

3.60 566,000

61 100 7”

SWG-7
90 100 8”
26 72 7”

4.75 740,000

51 100 8”

SWG-8
70 100 9”

*Rating at 100 psi. Sizing based on appliance maximum input rate not actual firing rate.
**Do not exceed maximum BTU/HR input rating or maximum oil GPH input. For multiple venting system applications, add the input for

each appliance. Category I gas-fired draft induced systems require an SWG-4 HD or larger. Category III gas-fired draft induced systems
require an SWG-5 or larger.

PROCEDURE FOR CALCULATING TOTAL EQUIVALENT PIPE LENGTH IN FEET

1. Calculate the total equivalent feet for each type of fitting used in the venting system from the chart below.

2. Calculate the total amount of feet for the straight lengths of vent pipe.

3. Add the equivalent feet for the fitting with the total amount of feet of straight lengths. This will approximate the total
equivalent feet of the vent system.

Figure 2

EQUIVALENT LENGTH (FEET) OF VENT PIPE FOR VENT PIPE FITTING

Page 4

VENT PIPE

FITTINGS

TEE

90° ELBOW

45° ELBOW

SUDDEN

REDUCER OR

19 25 31 38 44 50 56 63

d/D

¼

VENT PIPE DIAMETER

3” 4” 5” 6” 7” 8” 9” 10”

5 7 9 11 12 14 16 18
3 4 4 5 6 7 8 9

8 11 14 17 19 22 25 28

INCREASER
FOR THREE

*RATIOS (d/D)

*Reducer or increaser ratio (d/D) small diameter divided by the larger diameter.
Example 4" to 8" reducer: The reducer ratio is d/D = 4/8 = 1/2. To estimate the
equivalent foot length for the fitting, use the smaller pipe diameter for the
equivalent length. See Figure 2. Example 4" to 8" reducer; the reducer ratio is 1/2
and the smaller pipe diameter is 4". So, from the chart, the equivalent feet would
be 7 feet.

½ 5 7 8 10 12 13 15 17
¾ 2 3 3 4 4 5 6 6

Example: System Pipe Size = 4"
Step 1 Two 4" 90? Elbows @ 7 feet each = 14 Ft.
Step 2 Ten 2 Foot Lengths of 4" Pipe = 20 Ft.
Step 3 Total Equivalent Feet = 14 Ft. + 20 Ft. = 34 Ft.

CAUTION: Failure to install, maintain and/or operate the power venting system in accordance with manufacturer's
instructions will result in conditions which may produce bodily injury and/or property damage.

1. Remove power venter from box and inspect unit for damage. If the carton has been crushed or mutilated, check unit
very carefully for damage. Rotate blower wheel to insure that the motor and blower wheel rotate freely. DO NOT
install if any damage is apparent. Refer to unit sizing chart to check proper venting sizing.

2. Location of the termination of the venting system should be installed in accordance with the National Fuel Gas Code,
A.N.S.I.Z223.1, and/or manufacturer's recommendations which are applicable. See requirements below or refer to
installation location Diagram A for typical locations.
a. The exit termination of mechanical draft systems shall not be less than 7' above grade when located adjacent to

public walkways.
b. A venting system shall terminate at least 3' above any forced air inlet located within 10'.
c. The venting sys tem of other than a direct vent appliance shall terminate at least 4' below, 4' horizontally from, or

1' above any door, window or gravity air inlet into the building.
d. The vent termination of a direct vent appliance with an input of 50,000 BTU's per hour or less, shall be located at

least 9" from any opening through which vented gases could enter the building. With an input over 50,000 BTU's

per hour, a 12" termination clearance shall be required.
e. The vent termination point shall not be installed closer than 3' from an inside corner of an L-shaped structure.
f. The vent termination should not be mounted directly above, or within 3' horizontally from an oil tank vent or gas

meter.
g. The bottom of the vent terminal shall be located at least 12" above finished grade.

3.

After determining the location of the venting

Diagram A

Figure 3

Page 5

system termination point (See Diagram A),
cut a square hole through the wall 1" larger
than the outer pipe diameter of the power
venter. Mount the power venter through the
wall, keeping the outer pipe centered in the
hole. (See Figure 3) Fasten the power
venter to the outside wall with appropriate
fasteners. Seal the edges of the power
venter base plate to the wall with a high
temperature silicone sealant. DO NOT
enclose the spaced plates on the power
venter body. This will result in reduced cooling of the power venter
body. Galvanized metal sheets may be installed over surrounding
building surfaces to protect building materials for degradation by flue
gases. Brick or tile may be placed on the ground below the power
venter to protect the soil and vegetation from the effects of heated
exhaust air. The power venter should be placed so that vegetation
and other objects are not in direct contact with the power venter or
blocking the outlet. Snow should be cleared from the outlet area as
needed. Wood or vinyl siding should be cut so that the unit mounts
directly on the wall board to provide a stable support. If the siding is
greater than 1/2" thick use a spacer plate or board behind the power
venter mounting plate. (See Figure 4)

NOTE: If mounting the power venter through a combustible wall material and the

flue gas temperature is above 400°F at the power venter inlet, line the square
hole with a piece of corrosion resistant sheet metal or non-combustible material.
The liner piece should be the same width as the wall section. (See Figure 3) The
power venter has maximum flue gas temperature of 550°F at the power venter
inlet. Figure 5 shows how the airflow pattern through an SWG reduces the
required clearances to combustibles. For installation in wall thickness over 8-

inches, use an SWG Series Through Wall Extension Kit, Model PEK.

Figure 4

Figure 5

Figure 6

4. Remove the end pipe cover screws on the sides of the outside pipe and remove end pipe cover. Then mount the
backing plate over the outer pipe and route the flexible conduit and pressure switch tube (if applicable) through the
holes provided in the backing plate. Fasten the backing plate to the inside wall with appropriate fasteners. (See Figure

6) Re-install end pipe cover and screws.

CONNECTING POWER VENTER TO APPLIANCE

Diagram B

Page 6

This device must be used only with up to two listed gas-fired appliances equipped with draft hoods, draft diverters, or
barometric draft controls.

Venting system should be installed and supported in accordance with the National Flue Gas Code A.N.S.I.Z223.1, or in
accordance with any local codes. A vent pipe connector shall be supported for the design and weight of the material
employed, to maintain clearances, prevent physical damage and separation of joints. A vent pipe increaser or reducer
may be required for connecting the power venter to the vent system. If needed, place the reducer close to the power
venter. Smaller vent pipe sizes than a chimney-vented system may be used for the vent system.

If mounting venting system near combustible materials, refer to Diagram B for allowable installation clearances.
Clearances are based on an installation using single wall galvanized steel vent pipe. For metal thickness of galvanized
steel pipe connectors, refer to NFPA 211 or NFPA 54 Standards for guidelines. If manufactured double wall vent pipe is
required or used for the installation, clearance should be based on the vent pipes rated clearance. Always check local
code requirements for code restrictions.

Route the vent pipe from the appliance to the power venter using a minimum number of elbows as possible. The
horizontal section of the vent pipe should have a slight upward slope from the appliance to the power venter. For
clearances to combustible materials, multiple appliance venting and other installation requirements, refer to the National
Fuel Gas Code A.N.S.I.Z223.1, and/or any applicable local codes or appliance manufacturer's installation instructions.

INSTALLATION USING SINGLE WALL VENT PIPE

INSTALLATION CLEARANCE WITH SINGLE WALL VENT PIPE

DOUBLE PIPE SYSTEM SINGLE PIPE SYSTEM

ALLOWABLE INLET

TEMPERATURE

400°F OR LESS ½ INCH MINIMUM 400°F OR LESS 3 INCH MINIMUM

400°F TO 550°F 1 INCH MINIMUM 400°F TO 550°F 4 INCH MINIMUM
400°F TO 550°F

½ INCH MINIMUM WITH

SHEET METAL LINER

To install an outer pipe extension to the SWG power venter, the
end pipe cover on the power venter must be removed. Then, cut a
1-inch square notch into the vent pipe extension before attaching to
the power venter. (See Figure 7) This allows clearance for the
adjustment damper. Install the required length of outer pipe
extension lengths as needed for clearance to combustible
materials. Terminate the outer pipe extension with the end pipe
cover. (See Diagram B.) The table shows minimum allowable
clearances when using single or double pipe systems. When the
outer pipe is extended over the inner pipe use the double pipe
guidelines when determining clearances. NOTE: Vent pipe joints
should be secured with at least (3) three sheet metal screws.

CLEARANCE (A)

ALLOWABLE INLET

TEMPERATURE

400°F TO 550°F

CLEARANCE (B)

3 INCH MINIMUM WITH

SHEET METAL LINER

Figure 7

CLASS B AND CLASS L DOUBLE WALL VENT PIPE INSTALLATION

Figure 8

Page 7

(Follow vent pipe manufacturer's listed or recommended clearances from
combustible material.)

5. Using a hand crimper or a like device, crimp the inner pipe of the SWG
power venter approximately 1" long. (See Figure 8)

6. Attach the vent pipe over the crimped end of the SWG power venter
inner pipe.

7. Secure the vent pipe to the SWG power venter inner pipe with at least
(3) three #8 sheet metal screws. Predrilling the holes through both pipes
will allow easier fastening.

WIRING

NOTE: Refer to appropriate control kit for proper installation instructions.

Wire the power venter motor and controls in accordance with the National Electric Code and applicable local codes. UNIT
MUST BE GROUNDED. Check ground circuit to make certain that the unit has been properly grounded. The wiring
should be protected by an over-current circuit device rated at 15 amperes. CAUTION MUST be taken to ensure that the
wiring does not come in contact with any heat source. All line voltage and safety control circuits, between the power
venter and the appliance, MUST be wired in accordance with the National Electrical Code for Class 1 wiring or equivalent.

AIR FLOW ADJUSTMENTS

In order to obtain proper system draft, the power venter has an airflow adjustment damper built­in. When used in a system with a barometric draft control, this damper should be used to make
coarse draft adjustments while the barometric should be used for finer adjustments. Loosen the
locking screw on the air flow adjustment damper on the outer pipe of the power venter. (See
Figure 9) Adjust the adjustment damper to the full open position. Follow appliance manufact­urer's procedures for starting the heating appliance. Then adjust the thermostat to call for
"Heat". After the system has operated for several minutes to stabilize flue gas temperatures,
check for negative draft or up-draft at the heating appliance outlet or air flow into the draft hood.
Use a draft gauge, velocity meter or match test procedure. Adjust the adjustment damper
closed to obtain the minimum air flow required to maintain draft. Then increase air flow slightly
(10% over minimum air flow rate) to ensure proper venting. For gas-fired power burners, adjust
draft to proper over-fired draft. If using a barometric draft control, use the draft control to fine
tune the system draft. If proper draft has been established, tighten the adjustment locking
screw. Shut off thermostat and check for residual heat spilling from draft hood. If this occurs, a

Figure 9

post purge system may be required. If so, use a Field Controls PPC-5 Electronic Post Purge or
a Control Kit which includes one. Before installing, refer to the General Installation Inspection to check for negative
pressure problems in the building. If sufficient combustion air for the burner is not provided, a flow reversal during the off
cycle could occur within the venting system. This may cause combustion problems as well as condensation that could
block the air pressure sensing tube. It may also contribute to premature motor failure. Combustion, and/or make-up air,
should be supplied from outside the structure and the air inlet should be on the same wall as the power venter discharge.
For example, tightly constructed homes and homes retro-fitted from electic heated systems are more likely to experience
combustion and/or make-up air problems. For further information consult "The Field Report - Effects of insufficient
combustion air on draft and heating systems." Refer to the appropriate control kit installation instructions for pressure
switch adjustment procedure and system checkout procedures before operating continuously. NOTE: After proper venting

has been established, it is recommended that a combustion test and a check for CO levels be performed to ensure

maximum burner efficiency.

GENERAL INSTALLATION INSPECTION

Page 8

Recommended procedures for safety inspection of an appliance in accordance with the National Fuel Gas Code
A.N.S.I.Z223.1. The following procedure will help evaluate the venting system. It is intended as a guide to aid in deter­mining that the venting system is properly installed and is in a safe condition for continuous use. This procedure should be
recognized as a generalized procedure which cannot anticipate all situations. Accordingly, in some cases, deviation from
this procedure may be necessary to determine safe operation of the equipment. If it is determined that a condition exists
which could result in unsafe operation, the appliance should be shut off and the owner advised of the unsafe condition.
Corrections must be made before the appliance is put into continuous operation. The following steps should be followed in
making a safety inspection.

1. Visually inspect the venting system for proper size and determine that there is no flue gas spillage, blockage, re­striction, leakage, corrosion, or other deficiency which could cause an unsafe operation.

2. Insofar as practical, close all building doors, fireplace dampers, windows, and all doors in area in which the appliance
is located. Turn on clothes dryers, any exhaust fans, such as range hoods and bathroom exhausters so they operate
at maximum speed. Do not operate a summer exhaust fan. If, after completing Steps 3 through 7 it is believed
sufficient combustion air is not available, refer to the National Fuel Gas Code A.N.S.I.Z223.1, or any applicable local
codes for guidance.

3. Place in operation the appliance being inspected. Follow the lighting instructions and adjust thermostat so appliance
will operate continuously.

4. Determine that the pilot or burner is operating properly and that the main burner ignition operates satisfactorily, by
interrupting and re-establishing the electrical power of the appliance in any convenient manner. Test the pilot or
burner safety device to determine if it is operating properly by extinguishing the pilot or disconnecting the flame safety
circuit and pressure switch sensing tube from the pressure switch.

5. Visually determine that the main burner is burning properly; i.e., no floating, lifting, or flashbacks.

6. If appliances are equipped with high and low flame control or flame modulation, check for proper main burner
operation at low flame.

7. Test for spillage at draft hood or barometric draft control opening and burner inlet air location after 5 minutes of main
burner operation. Use a draft gauge, flame of a match or candle, smoke from a cigarette, cigar or pipe. If spillage
occurs, adequate air is not available. Shut off heating appliance thermostat and check for spillage around the draft
hood, barometric draft control or burner inlet air location after power venter has stopped operation. If a flow reversal is
noticed, house depressurization is occurring and make up air is required.

8. Turn on all fuel burning appliances within the same room so that they will operate at their maximum input. Then repeat
Steps 5 through 7.

9. Return doors, windows, exhaust fans, fireplace dampers and any other fuel-burning appliances to their previous
condition of use.

MAINTENANCE

Repair Motor

Blower

Page 9

NOTE: The installer must notify the owner/user of the device of the maintenance requirements listed below. This
instruction sheet must also be left with the owner/user.

1. Motor: Inspect the motor once a year - motor should rotate freely. To prolong the life of the motor, it should be
lubricated with six drops of SWG Superlube, Part # 46226200, annually.

2. Wheel: Inspect the power venter wheel annually to clear any soot, ash or coating which inhibits either rotation or air
flow. Remove all foreign materials before operating.

3. Vent System: Inspect all vent connections annually for looseness, for evidence of corrosion and for flue gas leakage.
Replace, seal, or tighten pipe connections if necessary. Check the power venter choke plate to insure it is secured in
place. Check the barometric draft control, if installed, to insure the gate swings freely.

4. System Safety Devices: With the heating system operating disconnect the pressure sensing tube from the pressure
switch on the CK Kit. This will stop the burner operation. Re-connecting the tube will relight the burner. For 30 millivolt
operating systems, disconnect one lead of the spill switch circuit from the thermocouple junction block. This will shut
off the pilot and the burner. Re-connection will allow relighting the pilot.

REPLACEMENT PARTS

Should the motor or blower wheel need replacing, the following replacement items are available. The Repair Motor
Assembly contains the Motor and Blower Wheel factory assembled to a mounting bracket.

PART NUMBERS

MODEL REPAIR MOTOR ASSEMBLY BLOWER WHEEL

SWGII-5 46234900 46150700
SWGII-6 46234699 46154600

Assembly

Wheel

REMOVAL AND INSTALLATION OF THE MOTOR ASSEMBLY

Figure 10

Figure 11

Figure 12

Page 10

REMOVAL

1. Remove the motor enclosure cover by loosening the four screws. (See Figure

10)

2. Open the electrical box on the motor and disconnect the conduit and wires from
the motor. (See Figure 11)

3. Remove the four nuts securing the motor assembly, and pull the motor
assembly straight off of the unit. (See Figure 12)

4. Clean off any build-up inside the blower wheel housing and the blower wheel.

CAUTION: Avoid applying excess pressure on the blower wheel when cleaning

off any build-up of material. This will cause an imbalance of the blower wheel

which will result in excessive vibration and premature motor failure.

INSTALLATION

1. Align the holes in the circular cover plate with the holes in the motor mount
bracket on the motor assembly. (See Figure 12)

2. Slide the motor assembly onto the protruding threaded studs on the venter body
with the exhaust chute pointing downward, and replace the four nuts securely to
the threaded studs. (See Figure 12)

3. Reattach the flexible conduit and wires to the motor and secure the cover on
the electrical box.

4. Install the motor cover with the side louvers pointing downward.

INITIAL BURNER AND VENTING SYSTEM OPERATIONAL INFORMATION

List the following for each operating appliance on the sidewall venting system, as a
guide for tune-up or service information annually.

DATE:
HEATING APPLIANCE BTU/HR. INPUT
GAS VALVE OPERATION PRESSURE
VENT SYSTEM DRAFT ABOVE DRAFT HOOD

OR BEFORE BAROMETRIC DRAFT CONTROL
CO2 MEASUREMENT
CO MEASUREMENT
EQUIPMENT OUTLET FLUE GAS TEMPERATURE

Page 11

PN 46229000 Rev A 08/00