Livezi Bravo H-DIG-18, Installation And Commissioning Manual

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23
3 C
ontrol
s
ystem
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The air conditioning plant and control system contains no user serviceable parts. Installation,
service and maintenance of these components should be carried out by a suitably qualified
technician.
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The control circuits for the indoor and outdoor units carry voltages ≥ 240 VAC which can
cause serious injury or death.
The control system consists of control modules located in the indoor and outdoor units in
addition to one of the following options.
1. Livezi LCD plant controller.
2. Livezi Smartzone variable air volume (VAV) control system.
Either of these control options may be connected by data cable to the communications ports of
the indoor unit to complete the control system.
3.1 Livezi CENTRAL Controller
Figure 3.1 depicts a traditional system setup where the temperature is measured at a single
fixed location. The Livezi LCD plant controller offers this level of control.
The Livezi LCD plant controller (3) is a wall mount touchpad connected to one of the
communications ports on either the indoor (2) or outdoor (1) unit control modules. Up to three
touchpads my be installed. Refer to the relevant connection diagram.
Figure 3.1
The LCD plant controller features the following user adjustable functions:
• Setpoint
Default = 22.5 °C
The setpoint may be adjusted from 15 to 30 °C.
• Mode
Default = Auto
The system operating mode can be selected from the following.
Auto - Changes from cooling to heating mode automatically according to ambient conditions.
Cool - Cooling only mode.
Heat - Heating only mode.
Vent - Fan only mode