Bard WGMFAD-3 User manual

INSTALLATION INSTRUCTIONS
MOTORIZED
FRESH AIR DAMPER
MODEL
WGMFAD-3
WGMFAD-5
Manual : 2100-362C
Supersedes: 2100-362B
File: Volume III Tab 19
Date: 09-16-04
Bard Manufacturing Company
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.
© Copyright 2003

CONTENTS
Figures
Figure 1 Vent Option Door .................................. 4
Figure 2 Exhaust Cover Plates ........................... 4
Figure 3A Routing of Wires ................................... 5
Figure 3B Proper Installation ................................. 5
Figure 4 Thermostat Diagram ................................6
Figure 5 Gas Electric Connection ..........................7
Tables
Table 1 WGMFAD-3 Ventialtion Air .................... 1
Table 2 WGMFAD-3 Ventialtion Air .................... 2
Table 3 WGMFAD-5 Ventialtion Air .................... 3
Description ......................................................... 1
Application .......................................................... 1
Installation Instructions ............................... 2 & 3
Wiring Diagram ................................................... 8
Manufactured under U.S. patent number:
5,485,878
i

Manual 2100-362C
Page 1
DESCRIPTION
The motorized fresh air damper WGMFAD is an
internally mounted damper designed to bring in up to
25% fresh air. The damper blade is powered by a 24
VAC motor with spring return on power loss. The
damper is powered open anytime the unit blower motor
is energized.
This ventilation device does not include an exhaust
provision. Depending on the tightness of the structure,
an independent exhaust provision may be needed to
obtain the ventilation air quantities shown.
APPLICATION
The amount of outside fresh air brought into the
structure is dependent on the supply and return duct
static pressure present in the duct system. Refer to
Table for ventilation air that will be supplied at different
duct static pressure for the model installed.
For free blow applications with return air filter grille
and supply grille use 0.00 supply air static pressure and
0.1 return air static pressure.
TABLE 1
WGMFAD-3 VENTILATION AIR
For use with WG24 Model
DEEPSHGIH
citatSriAylppuS )MFC(riAlatoT/riAnoitalitneV
00.05231/0510031/0335721/0840421/0060021/0860411/0370601/057
02.00911/0210511/0130311/5640901/0855301/066589/007529/027
04.00401/0110001/092049/044088/055548/046067/096AN
citatSnruteR00.050.001.051.002.052.003.0
MUIDEMDEEPS
citatSriAylppuS )MFC(riAlatoT/riAnoitalitneV
00.00311/0410901/0035701/0540501/0750001/076049/027058/047
02.00001/011089/072059/024019/045078/056028/007067/027
04.0088/001068/052008/004057/025ANANAN
citatSnruteR00.050.001.051.002.052.003.0
WOLDEEPS
citatSriAylppuS )MFC(riAlatoT/riAnoitalitneV
00.0009/031088/092068/034038/055008/056057/007AN
02.0028/001097/052037/004007/025ANANAN
04.0007/09ANANANANANAN
citatSnruteR00.050.001.051.002.052.003.0

Manual 2100-362C
Page 2
INSTALLATION
Step 1. Disconnect all power to unit before installing
WGMFAD.
Step 2. Remove vent option door. (See Figure 1.)
Remove fresh air damper or blank off plate if
installed on vent option door.
Step 3. The “exhaust cover plates” must be in place
when a WGMFAD is installed. (See Figure 2.)
Step 4. Install WGMFAD with notch in front lip of
WGMFAD centered over hole in condenser
partition. (See Figure 3A.)
Step 5. Position WGMFAD with front lip over
condenser partition and front grille. (See
Figure 3B.) This is important to insure proper
drainage of any water entering damper
assembly.
TABLE 2
WGMFAD-3 VENTILATION AIR
For use with WG30 and WG36 Models
DEEPSHGIH
citatSriAylppuS
00.00251/0610941/0430641/0940241/0260631/5270331/0180721/078
02.00431/0310231/0230721/0840421/0160411/0170011/0870501/028
04.00611/0210411/0030801/0540201/085039/086028/067AN
citatSnruteR00.050.001.051.002.052.003.0
DEEPSMUIDEM
citatSriAylppuS )MFC(riAlatoT/riAnoitalitneV
00.05231/0510031/0335721/0840421/0060021/0860411/0370601/057
02.00911/0210511/0130311/5640901/0855301/066589/007529/027
04.00401/0110001/092049/044088/055548/046067/096AN
citatSnruteR00.050.001.051.002.052.003.0
WOL
DEEPS
citatSriAylppuS )MFC(riAlatoT/riAnoitalitneV
00.00311/0410901/0035701/0540501/0750001/076049/027058/047
02.00001/011089/072059/024019/045078/056028/007067/027
04.0088/001068/052008/004057/025ANANAN
citatSnruteR00.050.001.051.002.052.003.0

Manual 2100-362C
Page 3
TABLE 3
WGMFAD-5 VENTILATION AIR
For use with WG42, WG48 and WG60 Models
DEEPSHGIH
citatSriAylppuS )MFC(riAlatoT/riAnoitalitneV
00.00391/0410191/0910881/5320481/5920181/5530771/0045271/044
02.00561/0610461/5025261/0520751/5335151/0245741/0540341/574
04.05731/5710431/5320131/5920421/0530711/5645801/5150001/565
citatSnruteR00.050.001.051.002.052.003.0
DEEPSMUIDEM
citatSriAylppuS )MFC(riAlatoT/riAnoitalitneV
00.05161/0115951/0615751/0525351/0030051/5935741/0545441/005
02.05141/0310831/0910531/0720031/5435621/0830021/0740411/555
04.05311/0510801/5120301/503569/573598/574097/045086/006
citatSnruteR00.050.001.051.002.052.003.0
DEEPSWOL
citatSriAylppuS )MFC(riAlatoT/riAnoitalitneV
00.00911/545711/0515611/0625311/0535011/5340701/0350301/026
02.00101/56089/081059/092019/093568/094008/065537/536
04.0097/58527/012066/553006/514535/594ANAN
citatSnruteR00.050.001.051.002.052.003.0
Step 6. Route wires as shown in Figure 3A into unit
low voltage terminal strip area.
Step 7. Connect black wire to C terminal of low
voltage block. Connect orange wire to G
terminal of low voltage block. Connect blue
wire to W1 terminal of low voltage block. See
wall mount low voltage connection diagram in
the unit installation instructions for wiring diagram.
Step 8. Check WGMFAD for proper operation.
WGMFAD should open whenever the blower is
energized.
Step 9. Plug 4 holes in vent option door with plastic
plugs provided and replace vent option door.

Manual 2100-362C
Page 4
EXHAUST
COVER PLATES
MIS-1447
MIS-1447
FRONT
DOOR
VENT
OPTION
DOOR
FIGURE 1
VENT OPTION DOOR TO BE REMOVED
FIGURE 2
EXHAUST COVER PLATES
MUST BE IN PLACE

Manual 2100-362C
Page 5
FIGURE 3B
PROPER INSTALLATION
FIGURE 3A
ROUTING OF WIRES

Manual 2100-362C
Page 6
FIGURE 4
THERMOSTAT WIRING DIAGRAM

Manual 2100-362C
Page 7
FIGURE 5
GAS ELECTRIC CONNECTION DIAGRAM

Manual 2100-362C
Page 8