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.