Trane Variable Refrigerant Flow System Mini Outdoor Unit Series Instalační manuál stáhnout pdf (Strana 38)

38 VRF-SVN33A-EN

Control System

Configuring the System

The control board contains two rotary switches and three DIP switches (shown in Figure 22). The

following tables explain their functions.

Table 18. Configuration using rotary switches SW01 and SW02

SW01/SW02 Total number of installed indoor units

Tens digit/Ones digit

Use to set total number of installed indoor units.

Notes:

1. For example, if 3 indoor units are installed: Set SW01 to “0”; set SW02 to “3”.

2. Set at mini outdoor unit only.

Table 19. Configuration using DIP switches K5–K8

DIP switch Setting Function description

K5 Not used Not used. Default is 0.

Snow prevention control

On Disables snow prevention control (default).

Off Enables snow prevention control.

(a)

(a) If enabled, the mini outdoor unit fan will operate for 1 minute every 30 minutes to prevent snow build-up.

Cooling capacity correction

(b)

(b) Maintain optimal evaporating temperature in the cooling mode if long line lengths exist. Refer to cooling long pipe

performance data in the technical data book. If you upgrade the performance at your discretion, low discharge air

temperature of an indoor unit might cause discomfort.

K7 On

44.6–48.2°F (7–9°C) (default)

K8 On

K7 On

41.0–44.6°F (5–7°C)

K8 Off

K7 Off

48.2–51.8°F (9–11°C)

K8 On

K7 Off

50.0–53.6°F (10–12°C)

K8 Off

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Trane Variable Refrigerant Flow System Mini Outdoor Unit Series Instalační manuál Strana 38