Nyle e360 - Page 42

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Installation: Optional Ducting & Ventilation
41
Guidance oered in this manual is intended to provide context for the
designer, and DOES NOT replace the need to have duct designs created
by qualified designers of commercial grade ducting. Inadequate duct
systems can result in premature system failure, underperformance,
unacceptable noise, condensation, and water damage.
1. Insulation: all ducting in conditioned spaces require insulation for
energy and condensation control. Insulation thickness is dictated by
local energy codes, climate, and the conditioned space’s indoor climate
conditions. Reflective insulation duct wrap is not adequate insulation
sucient insulation by itself. Air temperature in discharge ducting can be
significantly below minimum operating ambient temperatures.
2. Sealing: all ducting and insulation should be well sealed along all joints
and seams, to air conditioning standards for condensation control. Use
sealants rated for the full range of intake and discharge air temperatures.
See guidance in Table 7.
3. Coil Access: the heat pump evaporator coil and condensate pan are
service items that require periodic access for cleaning. Intake ducting, if
used, should include an access door to allow for inspection and cleaning
of the entire coil and drain pan.
4. Dampers: in very cold climates, motorized dampers or louvers can reduce
freeze risks significantly, preventing cold outside air from migrating to the
unit in between heating cycles. Louver/damper motor speeds need to be
30 seconds or less. Insulated dampers are recommended.
Check the unit’s performance specifications for maximum airflow volume
(CFM) and available static pressure (In. W.C.). These values form the basis
of a duct design, and all duct designs should be undertaken by qualified duct
designers.
Ducting Requirements:
When ducting intake air, it will be necessary to install the optional
“Remote Outdoor Air Temperature Sensor” accessory, to allow the
heat pump to detect actual intake air conditions before it attempts to
run. Be sure to locate and follow all instructions and guidance with
that accessory to ensure proper operation of the system.