Field controls SWG-4G User Manual

SIDEWALL POWER VENTING SYSTEM

Model: SWG-4G

ITEMS INCLUDED IN KIT

1 - SWGII-4HD Sidewall Power Venter
1 - CK-43F Control Kit (includes 4" MG-1 Barometric Draft Control)
1 - Installation Instructions

OPTIONAL COMPONENTS

PEK-4HD Extension Kit. For installations in walls over 8" thick.

GENERAL SYSTEM INFORMATION

Designed for operation with natural gas and LP gas.

1. The thermostat 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 fire.

2. After the heating requirement has been satisfied, the thermostat circuit will open and de­activate the burner.

3. The power venter operates for a period of time after the burner has shut off to purge
remaining flue gases.

WARNING: Bodily injury can result from high voltage electrical components, fast moving fans, and combustible
gas. For protection from these inherent hazards during installation and servicing, the electrical supply must be
disconnected and the main gas valve must be turned off. If operating checks must be performed with the unit
operating, it is the technicians responsibility to recognize these hazards and proceed safely.

DO NOT DESTROY

THESE INSTRUCTIONS MUST REMAIN WITH EQUIPMENT

INSTALLATION SAFETY INSTRUCTIONS

CAUTION: The power venting system must be installed by a qualified installer. "Qualified Installer" means an individual

who has been properly trained or 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 power venting system control kit box or power
venter unit.

1. 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, ANSI
Z223.1, CGA Standard B149.1-M91 or B149.2-M91, or refer to the General Installation Inspection section of this
manual.

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

3. Single wall vent pipe (refer to Diagram B) may be used to join the appliance to the power venter. If proper clearances
cannot be maintained from combustible material, Type B vent pipe should be used. Refer to national or local codes for
guidelines.

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

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

6. Air flow adjustment MUST be made to ensure appliance efficiency. This should be done at the appliance exhaust
outlet with a velocity meter or draft gauge.

7. On gas-fired furnaces, 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 or house
depressurization during windy days.

8. The air pressure switch must be adjusted to assure safe operation. Failure to adjust the air pressure switch as
specified later in these instructions, could lead to improper operation of the venting system and furnace which will
result in product damage, personal injury, or death.

INSTALLATION OF SWG POWER VENTER

WARNING: Failure to install, maintain and/or operate the power venting system in accordance with the
manufacturer’s instructions may result in fire, personal injury, or death.

P

ROCEDURE 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 Table 1 below.

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

3. Add the equivalent feet for the fittings with the total amount of feet of straight lengths. This will approximate the total
equivalent feet of the vent system. The total equivalent feet must be less than the maximum equivalent vent length as
shown in OEM instructions.

Table 1

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

VENT PIPE FITTINGS 4” VENT PIPE DIAMETER

90° ELBOW 7

45° ELBOW 4

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.

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Figure 1

Diagram A

INSTALLATION FOR THE SWG POWER VENTER

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.

2. Location of the termination of the venting system should be installed in

Figure 2

accordance with the National Fuel Gas Code, ANSI Z223.1, CGA Standards
B149.1-M91, B149.2-M91, manufacturer's recommendations, and/or local
codes 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 lo-

cated within 10'. For Canadian applications, a venting system shall
terminate more than 6' away from a mechanical air supply inlet.

c. The venting system of other than a direct vent appliance shall terminate at

Figure 3

least 4' below, 4' horizontally from, or 1' above any door, window or gravity
air inlet into the building. For Canadian applications, according to CAN/CGA Standards B149.1-M91 and B149.2­M91, 12" clearance is required for inputs up to and including 100,000 BTU/HR and 3' for inputs exceeding
100,000 BTU/HR.

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 or maximum expected snow

height.

3. After determining the location of the venting system termination point (See Diagram A), cut a square hole through the
wall 1" larger than the outer pipe diameter of the power venter. (See Figure 1)

4. Seal the back side of the base plate around the outer pipe of the venter and the conduit with a bead of high
temperature silicone sealant. (See Figure 3) Mount the power venter through the wall, keeping the outer pipe centered
in the hole. (See Figure 1) 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.

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 1) The power venter has a maximum flue gas
temperature of 550°F at the venter inlet. For installation through walls over 8 inches thick, use an SWG Series Extension
Kit, Model PEK-4HD.

5. 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 through the holes provided in
the backing plate. Fasten the backing plate to the inside wall with appropriate fasteners. (See Figure 3) Re-install
cover and end pipe screws.

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Diagram B

CONNECTING POWER VENTER TO APPLIANCE

The venting system should be installed and supported in accordance with the National Flue Gas Code, ANSI Z223.1,
CGA Standards B149.1-M91, B149.2-M91, 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.

If mounting venting system near combustible materials, refer to Diagram B for allowable installation clearances. Always
check local code requirements for code restrictions.

Route the vent pipe from the appliance to the power venter using the minimum number of elbows necessary. 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 ANSI Z223.1, CGA Standards B149.1-M91, B149.2-M91, and/or any applicable local codes or appliance
manufacturer's installation instructions.

Table 3

INSTALLATION CLEARANCE WITH SINGLE WALL VENT PIPE

DOUBLE PIPE SYSTEM SINGLE PIPE VENTING SYSTEM

Allowable Inlet Temperature Clearance (A) Allowable Inlet Temperature Clearance (A)

400°F Or Less 1/2” Minimum 400°F Or Less 1/2” Minimum

400°F To 550°F 1” Minimum 400°F To 550°F 1” Minimum

400°F To 550°F

1/2” Minimum

With Sheet Metal Liner

400°F To 550°F

1/2” Minimum

With Sheet Metal Liner

NOTE: Vent pipe joints should be secured with at least three sheet metal screws.
Use a PEK series extension kit or follow installation method below for a double pipe system. When the outer pipe of the

SWG is extended over the inner pipe, use the double pipe guidelines for determining clearances.

INSTALLATION USING TYPE B VENT PIPE

1. Using a hand crimper or a like device, crimp the inner pipe of the SWG power
venter approximately 1" long. (See Figure 4)

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

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

Figure 4

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