Bard EHWH42-A05, Installation Instructions Manual

Page: 10 / 17

Manual 2100-254E
Page
10 of 17
INSTALLATION OF HEATER PACKAGE
1. Disconnect all power to unit before installation.
INSTALLATION
2. Before installation, check unit serial plate to insure
that the heater package model that you intend to
install is listed as a heater package suitable for use
with the unit.
Under no circumstances 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.
3. Remove electric heater access panel and control
panel cover, both inner and outer. See Figure 2.
4. All heaters are installed with the thermal cutoffs
positioned to the top of the unit. Install heat strip(s)
through heater access opening. Position heat strip
support rod in heater support hole 1, 2 or 3 as
indicated in Table 1 and Figure 3. Secure in place
with 2 sheet metal screws in mounting holes as
indicated in Table 1 and Figure 3. On heater
packages with 2 heat strips, install 9KW or 10KW
heater first in position closest to the outlet air frame.
See Figures 4E and 4F.
5. Install heater control base into top of control panel
as shown in Figure 5. Secure with 4 sheet metal
screws provided.
6. Plug male 6 pin connector into mating connector
mounted in control panel. See Figure 5.
7. Connect red compressor supply lead to L1 of
terminal block. Connect black compressor supply
lead to L2 of terminal block. If 3 phase, connect
yellow supply lead to L3 of terminal block. See
Figure 5 and wiring diagram.
8. Route wires from heater control base up through
raceway in top right corner of control panel to the
heaters. See Figure 5.
9. Wire heater package per wiring diagram supplied
with this 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 4.
10. Attach adhesive wiring diagram directly above unit
wiring diagram on inner control panel cover.
11. Recheck all wiring. Break out appropriate circuit
breaker tabs on inner control panel cover to allow
trip lever to protrude. Replace control panel and
heater access panels
12. Resupply power to the unit and check for proper
operation.
13. Remark serial plate with self-adhesive label attached
to the front of this manual. See Figure 6.
WARNING
Install only heater packages listed on unit
serial plate. Hazard of fire or electrical shock.
Failure to install listed heater package could
result in fire, injury or death.
WARNING
Disconnect all power to unit before installing
heater package. Hazard of electrical shock.
Failure to disconnect power could result in
injury or death.