Bard EHWA018A-A05 Electric Heat Packages Installation Guide
- June 17, 2024
- Bard
Table of Contents
Bard EHWA018A-A05 Electric Heat Packages
Electric Heat Packages
Models:
- EHWA018A-A05
- EHWA018A-A08
- EHWA018A-A10
- EHWA024A-A05
- EHWA024A-B05
- EHWA024A-C05
- EHWA030A-A05
- EHWA030A-A10
- EHWA030A-A15
- EHWA030A-B09
- EHWA030A-B15
- EHWA030A-C05
- EHWA030A-C09
- EHWA030A-C15
- EHWA030ADC05
- EHWA036A-A15
- EHWA036A-B05
- EHWA036A-B15
- EHWA036A-C05
- EHWA036A-C09
- EHWA036A-C15
- EHWA036ADA05
- EHWA036ADA10
- EHWA036ADB09
- EHWA036ADC05
- EHWA036ADC09
- For Use with W**AY Series Wall-Mounted Air Conditioners
GENERAL INFORMATION
Description
- The EHW series electric heater packages are field-installable heater packages suitable for use with Bard wall-mount air conditioners.
- The packages consist of the electric heat strip, the heater control base (which includes the heat contactors and circuit breaker or toggle or rotary disconnects), installation instructions, and wiring diagrams.
- See Table 1 for nominal electrical data and BTU output.
- Before installation, check the unit serial plate to ensure the heater package model to be installed is a listed heater package that is suitable for use with the Bard wall mount unit (see Figure 6 on page 16).
Important
- The equipment covered in this manual is to be installed by trained and experienced service and installation technicians.
Shipping Damage
- Upon receipt of the equipment, the carton should be checked for external signs of shipping damage.
- If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.
Unpacking the Electric Heat Package
- Remove the heat package from the shipping carton.
The heat package must consist of the following:
- Basic heater.
- Electric heat control base and wiring.
- Installation instructions.
- Two wiring diagrams, one to be applied to the unit.
- Adhesive label to re-mark serial plate to indicate new model number.
- This is attached to the front of these instructions.
TABLE 1 Electrical Data and BTU Output
Heater Package Model| Volts| Phase| Nominal
KW| Nominal BTU
---|---|---|---|---
EHWA018A-A05| 230/208| 1| 4.6/3.8| 15,700/12,800
EHWA018A-A08| 230/208| 1| 7.4/6.0| 25,100/20,500
EHWA018A-A10| 230/208| 1| 9.2/7.5| 31,400/25,600
EHWA024A-A05| 230/208| 1| 4.6/3.8| 15,700/12,800
EHWA024A-B05| 230/208| 3| 4.6/3.8| 15,700/12,800
EHWA024A-C05| 460| 3| 4.6| 15,700
EHWA030A-A05| 230/208| 1| 4.6/3.8| 15,700/12,800
EHWA030A-A10| 230/208| 1| 9.2/7.5| 31,400/25,600
EHWA030A-A15| 230/208| 1| 13.8/11.3| 47,100/38,400
EHWA030A-B09| 230/208| 3| 8.3/6.8| 28,300/23,000
EHWA030A-B15| 230/208| 3| 13.8/11.3| 47,100/38,400
EHWA030A-C05| 460| 3| 4.6| 15,700
EHWA030A-C09| 460| 3| 8.3| 28,300
EHWA030A-C15| 460| 3| 13.8| 47,100
EHWA030ADC05| 460| 3| 4.6| 15,700
EHWA036A-A15| 230/208| 1| 13.8/11.3| 47,100/38,400
EHWA036A-B05| 230/208| 3| 4.6/3.8| 15,700/12,800
EHWA036A-B15| 230/208| 3| 13.8/11.3| 47,100/38,400
EHWA036A-C05| 460| 3| 4.6| 15,700
EHWA036A-C09| 460| 3| 8.3| 28,300
EHWA036A-C15| 460| 3| 13.8| 47,100
EHWA036ADA05| 230/208| 1| 4.6/3.8| 15,700/12,800
EHWA036ADA10| 230/208| 1| 9.2/7.5| 31,400/25,600
EHWA036ADB09| 230/208| 3| 8.3/6.8| 28,300/23,000
EHWA036ADC05| 460| 3| 4.6| 15,700
EHWA036ADC09| 460| 3| 8.3| 28,300
Wiring Main Power
- On all installations, size unit power supply wiring for the minimum circuit ampacity requirement for the unit and heater package combination listed on the unit serial plate.
- WARNING
- Install properly sized power supply leads for the unit/heater combination minimum circuit ampacity as listed on the unit serial plate. Hazard of fire.
- Failure to install properly sized conductors could result in a fire causing damage, bodily injury, or death.
- All heater packages covered by this manual are factory-wired for a single supply circuit. The following heater packages are field convertible to a dual supply circuit if required or desired: EHWA030A-A15, EHWA036A-A15
- To convert the above heater package to dual circuit configuration before installation, loosen four (4) screws holding the jumper bar in place and remove the jumper bar (see Figure 1). Circuits A + B are now identified on the heater package.
- The wire should be sized to the minimum circuit ampacity as specified on the serial plates of units that accept this heater package for circuits A + B.
INSTALLATION
Installation of Heater Package
- Disconnect all power to the unit before installation.
- WARNING
- Disconnect all power to the unit before installing the heater package. Hazard of electrical shock. Failure to disconnect power could result in injury or death.
- Before installation, check the unit serial plate to ensure that the heater package model to be installed is listed as a heater package suitable for use with the unit.
- Under no circumstance shall a heater package be installed in a unit if the model number of the heater package does not appear on the unit serial plate.
- WARNING
- Install only heater packages listed on the unit serial plate. Hazard of fire or electrical shock. Failure to install the listed heater package could result in fire, injury, or death.
- Remove the electric heater access panel and control panel cover, both inner and outer (see Figure 2).
- Install heat strip(s) through the heater access opening. Position the heat strip support rod in heater support holes 1, 2, or 3 as indicated in Table 2 on page 8 and Figure 3 on page 9.
- Install the heater control base into the top of the control panel as shown in Figure 5 on page 15. Secure with four (4) sheet metal screws provided.
- Plug the male 3-pin connector into the mating connector mounted in the control panel (see Figure 5).
- Connect the red compressor supply lead to the L1 of the terminal block. Connect the black compressor supply lead to the L2 of the terminal block. If three phases, connect the yellow supply lead to L3 of the terminal block. See Figure 5 and the wiring diagram.
- Route wires from the heater control base up through the raceway in the top right corner of the control panel to the heaters (see Figure 5).
- Wire heater package per wiring diagram supplied with the heater package. All wires are stamped with wire numbers that correspond with terminal numbers on the wiring diagram and stamped numbers on the heat strip. Limit switch wires are terminated with insulated quick-connect terminals. See Figure 5.
- Attach the adhesive wiring diagram directly above the unit wiring diagram on the inner control panel cover.
- Recheck all wiring. Break out appropriate circuit breaker tabs on the inner control panel cover to allow the trip lever to protrude. Replace the control panel and heater access panels.
- Resupply power to the unit and check for proper operation.
- Re-mark the serial plate with a self-adhesive label attached to the front of this manual (see Figure 6 on page 16).
TABLE 2 References to Figures 3 and 4 for Model Number
**Heater Package Model Number| Figure 3 Rod
Support and Screw Mounting Position| Figure 4 Heater
Terminal Identification Drawing**
---|---|---
EHWA018A-A05| 1| 4A
EHWA018A-A08| 1| 4C
EHWA018A-A10| 1| 4C
EHWA024A-A05| 1| 4A
EHWA024A-B05| 1| 4B
EHWA024A-C05| 1| 4B
EHWA030A-A05| 1| 4A
EHWA030A-A10| 1| 4C
EHWA030A-A15| 1 + 3| 4G
EHWA030A-B09| 1| 4B
EHWA030A-B15| 1 + 3| 4H
EHWA030A-C05| 1| 4B
EHWA030A-C09| 1| 4B
EHWA030A-C15| 1 + 3| 4E
EHWA030ADC05| 1| 4B
EHWA036A-A15| 1 + 3| 4F
EHWA036A-B05| 1| 4B
EHWA036A-B15| 1 + 3| 4E
EHWA036A-C05| 1| 4B
EHWA036A-C09| 1| 4B
EHWA036A-C15| 1 + 3| 4E
EHWA036ADA05| 1| 4A
EHWA036ADA10| 1| 4C
EHWA036ADB09| 1| 4B
EHWA036ADC05| 1| 4B
EHWA036ADC09| 1| 4B
- Bard Manufacturing Company, Inc. Bryan, Ohio 43506www.bardhvac.com
- Manual: 2100-782A
- Supersedes: 2100-782
- Date: 10-23-23