ECONOMIZER KIT
A
Introduction
Economizer kit is an accessory provided by the factory, but requires field installation. Economizer kit is compatible for R410A
rooftop models. If you are unsure whether this kit can be used with your particular unit, please contact authorized service
division. The economizer kit allows outside air to be mixed with return air for 'free' cooling if the outdoor air temperature is
suitable. Economizer cooling can be used alone or in conjunction with mechanical cooling. Beside that, the economizer
kit can be used as well to provide ventilation air thus can improve indoor air quality. It is vital to do a correct selection on
economizer kit, refer the table below for kit selection guideline:
No.
Rooftop Unit
Economizer kit which is compatible with
1
UATYQ250
2
UATYQ350
3
UATYQ450
4
UATYQ550
5
UATYQ600
6
UATYQ700
7
UATYQ900
Wrong selection may cause the kit is unable to be assembled with the rooftop unit.
Preinstallation Checking
B
(i)
The Contents of Economizer Kit
Before installation, it is recommended to check the contents of the economizer kit after removing the packaging.
The kit includes the following components:
No.
Item Description
1
Belimo actuator, LF24-SR
2
Side panel with outdoor air damper
3
Hood, top panel
4
Hood, center panel
5
Hood, bottom panel
6
Hood, side panel left
7
Hood, side panel right
* Support bracket, down throw (item 12) is not available in ECON0700.
OPTIONAL ACCESSORY
rooftop unit
ECONO250
ECONO350
ECONO450
ECONO550
ECONO600
ECONO700
ECONO900
Quantity
(set)
2
1
1
1
1
1
1
No.
Item Description
8
Filter cover
9
Filter
10
Support bracket, return air damper
11
Return air damper
12
Support bracket, down throw
13
Screw, M5x16
14
Screw, M4x12
Quantity
(set)
1
1
1
1
1
55
4
29