Bard WGEIFM-3C, WGEIFM-5C, WGSEIFM-5 User Manual
INSTALLATION INSTRUCTIONS
ECONOMIZER WITH EXHAUST
MODEL
WGEIFM-3C
WGEIFM-5C
WGSEIFM-5
© Copyright 2007
For Use with Bard 3 - 5 Ton Step Capacity
and
2 - 5 Ton Single Stage
Wall Mount Air Conditioners with Gas Heat
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.
Manual : 2100-498B
Supersedes: 2100-498A
File: Volume III Tab 19
Date: 02-24-10
Manual 2100-498B
Page 1 of 17
CONTENTS
General
General Information ................................................. 3
Unpacking................................................................ 3
Description ............................................................... 3
Models ................................................................ 3
Installation
Basic Installation .......................................... 4, 5, 7, 8
Economizer Sequence of Operation
Condition A – Cool Outdoors ................................. 16
Economizer Sequence of Operation
Condition B – Warm Outdoors............................... 17
Figures
Figure 1 Removal of Exterior Panels .................... 4
Figure 2 Installation of Economizer ....................... 5
Figure 3 Install Loose Piece Wire Harness ........... 6
Figure 4 WGSEIFM-5 Wiring Diagram .................. 7
Figure 5 Economizer Logic Module ....................... 9
Figure 6 Economizer Op - Single Compressor .... 15
Figure 7 Call for Blower Operation ...................... 16
Figure 8 Call for Cooling Operation..................... 17
Tables
Table 1 ................................................................ 3
Table 2 ................................................................ 8
Graphs
WG3S Ventilation Airflow ....................................... 10
WG4S Ventilation Airflow ....................................... 10
WG5S Ventilation Airflow ........................................ 11
W24G EIFM Ventilation Airflow ............................. 12
W30G-W36G EIFM Ventilation Airflow .................. 13
W42G-W60G EIFM Ventilation Airflow .................. 14
Manual 2100-498B
Page 2 of 17
Manufactured under U.S. Patent number 5,301,744
Other patents pending
COPYRIGHT DECEMBER 2007
BARD MANUFACTURING COMPANY, INC.
BRYAN, OHIO USA 43506
GENERAL
GENERAL INFORMATION
The ventilator should only be installed by a trained
heating and air conditioning technician. These
instructions serve as a guide to the technician installing
the ventilator package. They are not intended as a step
by step procedure with which the mechanically inclined
owner can install the package.
The ventilator housing is shipped in one carton which
contains the electrical harness, miscellaneous hardware
and installation instructions.
The economizer installation will function normally with
the 2-stage thermostats already specified for usage with
this 2-stage cooling unit.
If the “free cooling” of the economizer cannot keep up
with the cooling demand, it will de-energize the
economizer and will then operate on 2nd stage
mechanical cooling.
equipped with an economizer need to be equipped
with the low ambient control. For field installed
applications, install Bard Low Ambient Control Kit per
Table (below):
Because of this, all units
1G06W-1G42W6-AMC
S5GW-S3GW82-AMC
D1G06W-D1G42W82-AMC
DESCRIPTION
The WGEIFM-3C economizer is designed to be used
with Bard W24G to W36G 1-stage cooling, 1-stage
heating gas electric model wall mounts that are
equipped with fan cycling controls. The WGSEIFM-5
economizer is designed to be used with Bard WG*S 2stage cooling and W42-60G 1-stage cooling, 1-stage
heating gas electric model wall mounts that are
equipped with fan cycling controls. They are an
electromechanical economizer system designed to
provide “free” cooling where the outdoor air
temperature is cool enough to provide the needed
cooling without running the compressor. When cooling
is needed, the system automatically takes advantage of
the cold outdoor air when available, and uses it for first
stage cooling. Thus reducing the need to run the air
conditioning compressor – providing lower operating
costs and increasing the service life of the equipment. If
the outdoor air gets too warm or humid to be helpful, the
enthalpy control detects the condition and automatically
operates the internal damper and switches on the
mechanical cooling. This is all accomplished
automatically without attention from the user to achieve
maximum savings. See Figure 6 for a block diagram of
the economizer operation logic flow. The unit is
equipped with a full modulating type damper motor,
which controls the damper position to a factory set
minimum supply air temperature.
If using a Bard Master Controller, the Bard MC3000
controller is designed to control two (2) redundant Bard
Wall Mount units equipped with economizers. Refer to
the MC3000 Installation Manual (or consult Bard
Technical Service) for the required connections and
sequence of operation.
UNPACKING
Upon receipt of the equipment be sure to compare the
model number found on the shipping label with the
accessory identification information on the ordering and
shipping document to verify that the correct accessory
has been shipped.
Inspect the carton housing of each ventilator as it is
received, and before signing the freight bill, verify that
all items have been received and that there is no visible
damage. Note any shortages or damage on all copies of
the freight bill. The receiving party must contact the
last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent. Concealed
damage not discovered until after loading must be
reported to the carrier within 15 days of its receipt.
MODELS
When installed in model series (refer to Table 1), all
EIFM models provide built in exhaust provisions.
the damper blade opens to bring fresh air in, the damper
also opens an exhaust relief. The exhaust air will flow
into the condenser section of the unit. The condenser
fan will help draw exhaust air out.
TABLE 1
LEDOM
S3GW
5-MFIESGW
C3-MFIEGW
C5-MFIEGW
S4GW
S5GW
G42W
G03W
G63W
G24W
G84W
G06W
When
HTIWESUROF
STINUGNIWOLLOF
Manual 2100-498B
Page 3 of 17
INSTALLATION
WARNING
Open and lock unit disconnect switch before
installing this accessory to prevent injury or
death due to electrical shock or contact with
moving parts. Turn thermostat to off.
REMOVAL OF EXTERIOR PANELS
BASIC INSTALLATION
FIGURE 1
1. Unpack the ventilator assembly which includes the
integral ventilator with attached electrical harness,
blank-off plate and miscellaneous hardware.
2. Remove and save the existing exterior blower
access and service access panels (see Figure 1).
Remove and discard exhaust cover plate (see Figure 1).
3.
4. In rear of opening towards duct connection, install
exhaust opening adaptor plate (included).
EIFM UNIT
CRV UNIT
Manual 2100-498B
Page 4 of 17
MIS-2414
FRONT DOOR
EXHAUST COVER
PLATE
VENT OPTION
PANEL
VENT TERMINAL
RIGHT FRONT
CORNER
MIS-2416
5. Install ventilator sheet metal assembly by inserting
the ventilator into the unit – centering between the
tubing on the left and the control panel on the right.
Once the ventilator is fully inserted, slide the
ventilator to align screw hole through the front of
the condenser grille. (See Figure 2.)
IMPORTANT: Position front lip of ventilator on top of
front grille and condenser partition. (See Figure 2
inset.) This is important to ensure proper drainage
of any water entering damper assembly.
INSTALLATION OF ECONOMIZER
6. Open control panel to gain access to unit low
voltage terminal block.
7. Install loose piece wire harness plug into filter tray
& route wires into low volt box. (See Figure 3.)
(Save back two {2} long red wires with push-on
terminals.)
8. Plug wire plug from vent package installed in Steps
#1 through #6 into plug installed in Step #7.
FIGURE 2
FIGURE 2 INSET
SIDE SECTION
Manual 2100-498B
Page 5 of 17
ROUTE WIRES THROUGH
WIRE MOUNT, AND INTO
HOLE AT REAR OF UNIT
INTO LOW VOLTAGE
TERMINAL BLOCK AREA
FIGURE 3
INSTALL LOOSE PIECE
WIRE HARNESS PLUG
PLUG TO
SECURE INTO
FILTER TRAY
MIS-2415
Manual 2100-498B
Page 6 of 17
Loading...