Electric Heat Option; Electric Heat Components; Electric Heating Element; Thermal Overload - Bard FUSION-TEC WR36BPA Service Instructions Manual

To update model/serial numbers:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
ENGINEER password 9254.
3. Press UP or DOWN keys to scroll to Adv Sys
Config; press ENTER key.
4. Press UP or DOWN keys to scroll to Model/Serial
Set B1.
5. Press ENTER key to advance the cursor to the digit
that needs changed in the model/serial number.
6. Press UP or DOWN keys to change value of the digit.
NOTE: The characters are in ASCII format and some
digits may not have a character assigned to
them. This will required pressing the UP or
DOWN key until these characters are passed.
7. Continue Steps 5 and 6 until the model/serial
number(s) are correct and reflect the number on
the product label.
For more information on the options and settings
available for specific model numbers, please see the
model number breakdown in Figure 59.

Electric Heat Option

Electric Heat Components

Electric Heating Element

The unit is optionally equipped with a 1.5kw or 5kw
heat strip. The heat strip is located next to the blower
assembly and uses resistive heat.

Thermal Overload

The heater assembly has a thermal overload wired in
series with the heating element. This device has a
cycling limit which opens at 130°F and resets at 80°F.
The limit is also equipped with a redundant thermal
fuse that will open at 150°F.

Electric Heat Operation

The heat strip will be activated on a call for heat. This
call can be generated by the LC or the wall-mount unit
operating in orphan mode.

Bard Guard Anti-Theft System Option

The unit has the option to be shipped from the factory
with a low pressure switch, panel sensors and a speaker.
These devices are used with the Bard Guard BG1000 anti-
theft controller to provide an anti-theft measure. These
sensors and switch form a loop that when connected to
the BG1000 controller will cause the system to go into
alarm if any of the front panels or coil assemblies are
removed without being disarmed. The speaker provides an
audible alert that the system is being tampered with. The
Bard Guard anti-theft control sensor connection is wired
to terminals 7 and 8 on the wall-mount unit. The speaker
Manual 2100-695
Page 36 of 54
connection is wired to terminals 5 and 6 on the wall-
mount unit. See the latest revision of BG1000 Installation
Instructions 2100-672 for directions on connecting the
wall-mount units to the BG1000 controller.

Smoke Detector Unit Disable Option

The unit is equipped with an input that can be used
with a smoke detector or unit disable switch with a dry
contact. When this input indicates a smoke event, the
system will be shut down. The alarm will automatically
clear when the alarm condition is no longer present.

Inverter Option

The inverter is only used in applications where a generator
is not present and the wall-mount units must run during
a power loss event. The inverter will always keep power
available to the wall-mount units during a power outage.
In the event of a power outage, a power loss relay in the
wall-mount unit will be energized and will only allow
the blower and economizer to run while powering the
controller. The inverter converts either 24 VDC or 48
VDC, depending on the model, to 230 VAC. A relay
output from the inverter will also communicate an alarm
to the supervisory controller in the event of an inverter
failure. This variable can be communicated through the
Ethernet port for integration into a building management
system. The units will continue to run in economizer-only
operation until power has been restored or the battery
power has been depleted.
When the wall-mount unit is operating under inverter
power, shelter economizer cooling will only occur if
outside temperatures fall below indoor temperatures and
blower speeds are slightly reduced to conserve battery
power.