PRE HEATER INST TOPVEX SC TC 247019

Warnings
|
1
1 Warnings
Danger
• Make sure that the mains power supply to the unit is disconnected before performing any maintenance
or electrical work!
• All electrical connections must be carried out by an authorized installer and in accordance with local rules
and regulations.
2 General
A preheater is available as an accessory for Systemair Topvex SC, Topvex TC. Install the preheater in the outdoor duct
to prevent icing in the heat exchanger, compensate for loss of heating capacity during by-pass defrosting or to supple-
ment the heating capacity during colder conditions.
The kit contains of 1 preheater, 1 outdoor air sensor and 1 instruction.
3 Installation
3.1 Outdoor air sensor
Mount the enclosed outdoor air sensor to the outdoor air duct (OS in figure 1).
Replace the existing OS-label inside the air handling unit with the new PHS-label. Attach the new OS-label next to the
added outdoor air sensor.
PHS
OS
EF
SF
HE
PH
Fig. 1
Outdoor air
Supply air
Extract air
Exhaust air
OS
Outdoor air sensor
PH
Preheater
PHS
Preheater temperature sensor
EF
Extract air fan
SF
Supply air fan
HE
Heat exchanger
247019 | A001