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INSTALLATION INSTRUCTIONS
ECONOMIZERS WITH EXHAUST
For Use with Bard 3-1/2 through 6 Ton
Wall Mount Air Conditioners
Bard Manufacturing Company
Bryan, Ohio 43506
Since 1914...moving ahead just as planned.
Model
EIFM-5C
and Heat Pumps
Manual :
2100-447
Supersedes:
File:
Volume III Tab 19
Date:
12-14-04
© Copyright 2004
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Related Manuals for Bard EIFM-5C
Summary of Contents for Bard EIFM-5C
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Page 1: Installation Instructions
INSTALLATION INSTRUCTIONS ECONOMIZERS WITH EXHAUST Model EIFM-5C For Use with Bard 3-1/2 through 6 Ton Wall Mount Air Conditioners and Heat Pumps Manual : 2100-447 Bard Manufacturing Company Supersedes: Bryan, Ohio 43506 File: Volume III Tab 19 Since 1914...moving ahead just as planned. -
Page 2: Table Of Contents
Economizer – WA, WL & WH Series ...... 7 Figure 7 ..............9 TABLES Table 1 ..............1 Table 2 ..............6 Manufactured under U.S. Patent number 5,301,744. Other patents pending. COPYRIGHT DECEMBER 2004 BARD MANUFACTURING COMPANY BRYAN, OHIO USA 43506... -
Page 3: General
The EIFM-5 economizer is designed to be used with heating and air conditioning technician. These Bard 3-1/2 through 5 ton wall mount series air instructions serve as a guide to the technician installing conditioners and heat pumps equipped with low ambient the economizer package. -
Page 4: Installation
INSTALLATION BASIC INSTALLATION 2. Remove and save the existing exterior blower access and service access panels on the Bard wall 1. Unpack the economizer assembly which includes mount unit. (See Figure 1.) the integral economizer with attached electrical 3. Remove and save existing unit return air filter and harness, mixed air thermistor, miscellaneous center screw in front grille. - Page 5 IMPORTANT: Position front lip of economizer on 7. Open unit control panel to gain access to unit low top of front grille and condenser partition (See voltage terminal block. Figure 2 inset.) This is important to ensure proper 8. FOR LEFT HAND UNITS – Reroute economizer drainage of any water entering damper assembly.
- Page 6 FIGURE 3 MIS-1356 Manual 2100-447 Page...
- Page 7 Manual 2100-447 Page...
- Page 8 10. Connect leads with fork terminal to corresponding 3. Calculate the mixed air temperature (MAT) points on terminal strip. RE: C.Y.G. (See wiring which will result from the desired diagram.) combination of OAT (10 percent) and RAT (90 percent). 11. Wire nut leads with 5/8" stripped ends to Y1 and Y2 leads from thermostat.
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Page 9: Economizer - Wa, Wl & Wh Series
F. Readjust temperature on the thermostat to ECONOMIZER SEQUENCE OF OPERATION engage the second stage of cooling (Y2). Condition A – Cool Outdoors The damper motor should return to previously set minimum position. Compressor motor First stage cooling closes and powers the economizer should start. - Page 10 CONDITION B – WARM OUTDOORS First stage cooling cycles the compressor and dampers remain in mechanical cooling mode. FIGURE 6 MECHANICAL COOLING OPERATION MIS-348 Manual 2100-447 Page...
- Page 11 FIGURE 7 ECONOMIZER OPERATION FOR SINGLE COMPRESSOR UNIT MIS-1351 WALL THERMOSTATS FOR HEAT PUMPS WITH ECONOMIZER FOR AIR CONDITIONING WITH ECONOMIZER Thermostat Part 8403-027 (White Rodgers IF92-71) Thermostat Part 8403-021 (Honeywell T874D1934) Electronic Heat Pump Thermostat Subbase Part 8404-012 (Honeywell Q674A1001) 2 Stage Cool / 3 Stage Heat 2 Stage Cool / 2 Stage Heat Manual 2100-447...
- Page 12 Manual 2100-447 Page...
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