9
TRAP
CONDENSATE
DRAIN CONNECTION
Connect drain using the
same size (or larger)
as is used on the unit.
1” MIN.
PITCH
TOWARDS
DRAIN
Figure 14
Running Trap
If a secondary drain is not installed, the secondary access must be
plugged.
Condensate drain traps with an open vertical Tee between the
cased coil and the condensate drain trap can improve condensate
drainage in some applications, but may cause excessive air dis-
charge out of the open Tee. Daikin does not prohibit this type of
drain but we also do not recommend it due to the resulting air
leakage. Regardless of the condensate drain design used, it is the
installer’s responsibility to ensure the condensate drain system is
of sufficient design to ensure proper condensate removal from
the coil drain pan.
Use of a condensate removal pump is permitted when necessary.
This condensate pump should have provisions for shutting off the
control voltage should a blocked drain occur. See Auxiliary Alarm
Switch section in the gas furnace or modular blower manual for
more details. A trap must be installed between the unit and the
condensate pump.
NOTE: This cased coil DOES NOT have auxiliary alarm switch
feature.
IMPORTANT NOTE: The coil is fabricated with oils that may dis-
solve styrofoam and certain types of plastics. Therefore, the re-
moval pump or float switch must not contain any of these materi-
als.
11 ELECTRICAL WIRING WORK
IMPORTANT: All routing of electrical wiring must be made through
provided electrical bushings. When routing electrical wiring
through bushings, take care not to damage the PCB. Do not cut,
puncture or alter the cabinet or control panel for electrical wiring.
HIGH VOLTAGE!
Disconnect all power before servicing or installing
this unit. Multiple power sources may be present.
Failure to do so may cause property damage, personal injury or
death.
To avoid property damage, personal injury or death due to
electrical shock, this unit MUST have an uninterrupted,
unbroken electrical ground.
The electrical ground circuit may consist of an appropriately
sized electrical wire connect the ground lug in the unit control
box to the building electrical service panel.
Other methods of ground are permitted if performed in
accordance with the National Electric Code (NEC)/American
National Standards Institute (ANSI) /National Fire Protection
Association (NFPA) 70 and local/state codes. In Canada,
electrical grounding is to be in accordance with the Canadian
Electric Code (CSA) C22.1
11.1 GENERAL INSTRUCTIONS
• Shut off the power before doing any work.
• All field supplied parts and materials, electric works must
conform to local codes.
• See also the “Wiring Diagram Label” located on the under-
side of the control panel cover.
• All wiring must be performed by a licensed electrician.
• The power wiring must be protected with safety devices in
accordance with local and national codes i.e. a fuse, a cir-
cuit breaker or a GFCI. Further detail, see gas furnaces or
modular blower installation manual.
• To avoid short circuiting the power supply wire, be sure to
use insulated terminals.
• Do not turn on the power supply (circuit breaker or a GFCI)
until all other work is done.
Do not ground units to water piping, telephone wires or
lightning rods because incomplete grounding could cause a
severe shock hazard resulting in severe injury or death. Do not
ground to gas piping. A gas leak could result causing an
explosion which could lead to severe injury or death.
11.2 WIRE SIZING
Use relay wire harness (including ground wire) as supplied with
this unit for connection between cased coil and gas furnace or
modular blower. If it must be replaced with wiring, use thicker
wire gauge than AWG18 wire size for your unit. Wiring material
must comply with local codes.
FIRE HAZARD! To avoid the risk of property damage, personal
injury or fire, use only copper conductors.
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