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DURASTAR.COM
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NOTE
The allowed static pressure range of the air handler on site is 0-0.80 in-H2O (0-200 Pa).
The airflow decreases below 0.80 in WC or 200Pa. System design should allow for the
increased resistance as filters become dirty.
The data below represents the static pressures at full required air flow used for AHRI
testing. 18-24k: 0.5 in-H2O(125Pa) 30-36k: 0.5 in-H2O(125Pa) 48-60k: 0.5 in-H2O(125Pa)
Electrical Safety
• The product must be properly grounded at the time of installation, or electrical shock may occur.
• If there is a serious safety issue with the power supply, stop work immediately. Explain your
reasoning to the client, and refuse to install the unit until the safety issue is properly resolved.
• For all electrical work, follow all local and national wiring standards, regulations, and the
Installation Manual. Connect cables tightly, and clamp them securely to prevent external forces
from damaging the terminal. Improper electrical connections can overheat and cause fire, and
may also cause shock. All electrical connections must be made according to the Electrical
Connection Diagram located on the panels of the indoor and outdoor units.
• All wiring must be properly arranged to ensure that the control board cover can close properly. If
the control board cover is not closed properly, it can lead to corrosion and cause the connection
points on the terminal to heat up, catch fire, or cause electrical shock.
• If connecting power to fixed wiring, an all-pole disconnection device which has at least 1/8"
(3mm) clearances in all poles, a leakage current that may exceed 10mA, a residual current
device (RCD) that has a rated residual operating current not exceeding 30mA, and a
disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.
• Only connect the unit to an individual branch circuit. Do not connect another appliance to
that circuit.
• No other equipment should be connected to the same power circuit.
• Power voltage should be within 90-110% of rated voltage. Insufficient power supply can cause
malfunction, electrical shock, or fire.
• Installation of an external surge suppressor at the outdoor disconnect is recommended.
• The air handler’s circuit board (PCB) is designed with a fuse to provide over current protection.
The specifications of the fuse are printed on the circuit board.
• Do not let wires touch or rest against refrigerant tubing, the compressor, or any moving parts
within the unit.
• To avoid getting an electric shock, never touch the electrical components soon after the power
supply has been turned off.
• After turning on the power, always wait 10 minutes or more before you touch the
electrical components.
• Make sure that you do not cross your electrical wiring with your signal wiring. This may cause
distortion, interference or possibly damage to circuit boards.
• Connect the outdoor wires before connecting the indoor wires.
WARNING
Before performing any electrical or wiring work, turn off the main power to the
system.
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