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Daikin Electric Heater Modules
LOCKOUT/TAGOUT all power sources prior to servicing the unit. More than
one disconnect may be required to de-energize the unit.
Electrical shock can cause severe personal injury or death. Control panel
must be serviced by trained and qualified technicians.
Electrical shock can cause severe personal injury or death. All protective
deadfront panels must be reinstalled and secured when power wiring is
complete.
Installation and maintenance must be performed only by qualified personnel
who are trained and experienced with this type of equipment and familiar
with local codes and regulations.
Improper installation, adjustment, alteration, service, or maintenance
can cause personal injury or death. Read carefully and understand this
installation and maintenance manual thoroughlybefore installing or
servicing this equipment.
IM 1287 • REBEL APPLIED ROOFTOP
DANGER
WARNING
WARNING
WARNING
WARNING
Electric Heater General Information
The 23rd through the 26th digits in the DPSA rooftop model
number will be used to define the DPSA Main electric heater
when the unit is furnished with a factory installed electric
heater.
Example: DPSA - - - - - - - - - - - - - - - - - EEDS would be a
40kW electric heater with modulating control.
The DPSA electric heaters are available with stage or
modulating heat output. The heaters are designed for outdoor
non-residential installations only.
If unit is equipped with energy recovery wheel (ERW), the 43rd
digit in the DPSA rooftop model number will be used to define
the ERW pre heater.
Example: DPSA - - - - - - - - - - - - - - - - - C would be a 10kW
electric heater with SCR.
The DPSA ERW electric heaters are only available with
modulating heat output. The heaters are designed for outdoor
non-residential installations only.
The electric heat design consists of a heating coil, DDC staging
control, and all operational safeties. The safety switches
include high-limit temperature switches and individual coil
fusing.
The high limit temperature switches are configured as
automatic resetting for the primary protection switch(es) and
manual resetting for the backup protection switch(es). See
Table 11
for main electric heat or
heater. The primary protection switch(es) open the control
circuit and shuts the heater down when the temperature
reaches the high limit set point; the circuit closes again when
the temperature falls below dead band and then allows the
heater to run. The backup protection switch(es) open the
control circuit and shuts the heater down when the temperature
exceeds the set point. The switch(es) requires manual
resetting to resume electric heat operation. The Temperature
High Limit backup switches may be found by deenergizing the
unit, removing the dead-front, and locating the switches as per
Figure 61 on page
75.
74
Unit Maintenance
Table 12
for ERW electric
www.DaikinApplied.com
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