Bard WGMFAD-5A, WGMFAD-3A Installation Instructions Manual

INSTALLATION INSTRUCTIONS

MOTORIZED

FRESH AIR DAMPER

MODEL

WGMFAD-3A
WGMFAD-5A

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

Since 1914...Moving ahead just as planned.

Manual : 2100-362D
Supersedes: 2100-362C
File: Volume III Tab 19
Date: 02-25-10

Manual 2100-362D
Page 1 of 10

CONTENTS

Description ......................................................... 3

Application.......................................................... 3

Installation Instructions ...............................4 & 5

Wiring Diagram................................................. 10

Figures

Figure 1 Vent Option Door.................................. 6

Figure 2 Exhaust Cover Plates ........................... 6

Figure 3ARouting of Wires ................................... 7

Figure 3BProper Installation ................................. 7

Figure 4 Thermostat Diagram ................................8

Figure 5 Gas Electric Connection ..........................9

Tables

Table 1 WGMFAD-3A Ventialtion Air ................. 3

Table 2 WGMFAD-3A Ventialtion Air ................. 4

Table 3 WGMFAD-5A Ventialtion Air ................. 5

Manual 2100-362D
Page 2 of 10

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.

WGMFAD-3A VENTILATION AIR

For use with W24G 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

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

WOLDEEPS

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

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 2100-362D
Page 3 of 10