Economisers - Lennox SCA 010 Installation, Operation & Maintenance Manual

ECONOMISERS

ECONOMISERS ECONOMISERS ECONOMISERS ECONOMISERS
Note : Gravity exhaust dampers are required with
economisers.
The economiser is used with LINEA units in downflow and
horizontal air discharge applications. The econmiser uses
outdoor air for free cooling when temperature and/or humidity
is suitable.
INSTALL ECONOMISER
1. Disconnect all power to unit.
2. Release latches and open filter access panel.
3. Align bottom of economiser with economiser support
bracket and slide economiser into unit. See figure 51.
4. Fit economiser end plate over end of economiser and
secure end plate with sheet metal screws.
5. For wiring detail, refer to unit wiring diagram and infor-
mation supplied with economiser.
ECONOMISER ASSEMBLY
Unit 020 to 030 has 6 blades
Units 035 to 045 have 7 blades
Units 055 to 090 have 6 blades
Economiser motor
jack/plug P3
economiser plug
P3 to unit jack J3
ECONOMISER INSTALLATION
Economiser support bracket
JACK/PLUG CONNECTIONS
J3
P3
Connect
Bottom of economiser
IOM / Rooftop Smart and Linéa™ Range - Page 37
B7
Economiser motor
Figure 50
Figure 51