Swegon GLOBAL PX User Manual

52
Operation and maintenance instructions
- Conditions:
•
Only with post-heating option.
- Causes:
•
For PX units:
Frost protection is only selected with electrical pre-heating coil (KWin) or water preheating coil (BAin) or modulating bypass.
With KWin or BAin option: In certain air T° conditions as measured on the exhaust airow aer heat recovery, indicating
that the internal electrical KWin coil or external hydraulic coil (BAin) has reached its limit, the TAC control can take
over to guarantee the anti-frost function.
If T° < assignment T°-1,5°C for more than 5 minutes: supply and exhaust airow reduction of 33% if airow control or
demand control and of 25%.
if pressure control mode, for 15 minutes.
•
For RX units:
When outdoor temperature (T1 sensor) is lower than the anti-frost temperature (T°AF, -9°C by default), the rotation
speed of the heat exchanger will decrease to avoid any risk of frosting.
When T1 ≥ T°AF for at least 5 minutes, the wheel will ramp up to its nominal rotation speed.
- Eects:
8.13 TYPE 13: ALARM INDICATING HEAT EXCHANGER FROST PROTECTION ALERT
TAC control board
ALARM OUTPUT AL dPa OUTPUT LED ALARM Fans
/ / ON /
Auto reset: yes
Displayed on HMI TACtouch
Code Text displayed Level
A.10 Anti-freeze - Reduced air ows 2

Swegon GLOBAL PX Specifications

General

Brand	Swegon
Model	GLOBAL PX
Category	Air Handlers
Language	English