Manual 2100-449a page 1 of 13 installation instructions economizers with exhaust models eifm-3c for use with bard 2-1/2 through 3 ton wall mount air conditioners and heat pumps produced in 2005 and later manual : 2100-449a supersedes: 2100-449 file: volume iii tab 19 date: 03-14-08 bard manufacturin...
Manual 2100-449a page 2 of 13 contents general general information ................................................. 3 unpacking ................................................................ 3 description ............................................................... 3 installation basic install...
Manual 2100-449a page 3 of 13 general general information the economizer should only be installed by a trained heating and air conditioning technician. These instructions serve as a guide to the technician installing the economizer package. They are not intended as a step by step procedure with whic...
Manual 2100-449a page 4 of 13 2. Remove and save the existing exterior blower access and service access panels on the bard wall mount unit. (see figure 1.) installation basic installation 1. Unpack the economizer assembly which includes the integral economizer with attached electrical harness, mixed...
Manual 2100-449a page 5 of 13 4. Remove and discard the condenser partition blank off plate. (see figure 2.) 3. Right hand units remove and save existing unit return air filter and left side filter support bracket. Remove and save top four (4) screws from grille. (see figure 2.) left hand units remo...
Manual 2100-449a page 6 of 13 5. For right hand units install economizer by inserting the economizer into the unit to the far left side clearing the right filter bracket. Once the economizer is fully inserted, slide the economizer to the right until it is tight against the back of the control panel....
Manual 2100-449a page 7 of 13 6. Mount mixed air thermistor to blower partition as shown with screws provided. Bracket with sensor installs on top of blower partition. Screws are inserted from the underside. Route wires as shown and secure with wire tie. Connect wires to thermistor. (see figures 2 &...
Manual 2100-449a page 8 of 13 figure 5 top view of control panel.
Manual 2100-449a page 9 of 13 9. Connect lead with fork terminal to corresponding points on terminal strip. Re.: c.Y.G. (see wiring diagram.) 10. Wire nut leads with 5/8" stripped ends to y1 and y2 leads from thermostat. See wiring diagram in this manual or on economizer. Note: wires referenced in n...
Manual 2100-449a page 10 of 13 economizer – wa, wl & wh series features • one piece construction – easy to install with no mechanical linkage adjustment required. • exhaust air damper – built in with positive closed position. Provides exhaust air capability to prevent pressurization of tight buildin...
Manual 2100-449a page 11 of 13 condition b – warm outdoors first stage cooling cycles and compressor and dampers remain in mechanical cooling mode. Figure 7 mechanical cooling operation.
Manual 2100-449a page 12 of 13 figure 8 economizer operation for single compressor unit wall thermostats for heat pumps with economizer thermostat part 8403-060 programmable or non- programmable multi-stage heat/cool & heat pump thermostat. Automatic or manual changeover (digital electronic). 3 stag...
Manual 2100-449a page 13 of 13.
