Outlet Guide - Kaden KU5 Installer Manual

Kaden Installer's Manual
Ducted Gas Heaters

7. OUTLET GUIDE

The "Outlet Register Chart" Table 6 located on page 25 is a guide only and the system's minimum airflow
requirements shall be met to ensure reliable operation. The figures are based on using the Kaden Sizing Guide
or a system designed using accepted design principles. These figures also relate to typical size registers and
diffusers used on domestic heating systems i.e. 300 mm x 100 mm floor registers and 150 mm round ceiling
diffusers, with 150 mm ductwork connection.
For all systems, a minimum number of outlets (columns B & C) MUST remain fully open (this includes both the
outlet grille and the damper in the duct) to achieve the optimum turn down performance and system reliability
without overheating. Similarly, ceiling outlet systems have a maximum number of outlets that can remain fully
open, to ensure that the velocity through each outlet is sufficient. These maximum ceiling outlet figures relate to
fully open outlets, however, the system will operate efficiently with more outlets open, if it's been properly balanced.
The outlet chart has been divided up into three columns as follows:
A) The maximum number of outlets that should remain fully open for a ceiling outlet system.
B) The minimum number of outlets that should remain fully open for floor/ceiling systems where the system does
not have zone dampers installed or, where there are zone dampers but these zones are not operated from a
Networker wall control (e.g. wall switches).
C) The minimum number of outlets that should be fully open for floor/ceiling systems where the system has zone
dampers installed, and these zones are being operated from a Networker wall control using the heater's on-
board zone relays or a zone module. Systems fitting this description are deemed to have Adaptive Zoning
active, hence minimum outlet numbers are reduced. Where it shows half figures such as 1.5, it is possible to
operate with 1 outlet fully open, and another outlet half closed (such as a bathroom).
There is no maximum number for floor outlets.
Column C only applies to Kaden KU4 & KU5 heaters and should not be used unless the Networker
NOTE
has been configured for Adaptive Zoning only. Refer to Column B instead.
If you wish to fit air filters then consult your installer to ensure compatibility with airflow
requirements. Ensure that these filters are regularly cleaned and maintained.
RETURN AIR CONNECTION AT MOTOR SIDE OF THE UNIT
On applicable models, connecting the Return Air duct to motor side of the unit will result in
IMPORTANT
reduced air flow. In this situation:
•
The total number of outlets normally permitted for a heating system shall be reduced by 2
(refer to the 7.1 Outlet Register Chart - Table 6 located on page 25).
•
DO NOT USE this configuration in Add-On Cooling applications, unless you ensure Minimum
Recommended Airflow required for the cooling is maintained.
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