Weather-Rite XT112 Installation, Operation & Service Manual page 54

S XT I , O
ERIES NSTALLATION PERATION AND
Table 11: Configuration Chart
Air Handler
Configuration
Make Up Air (MUA)
Fixed Recirculation (FR)
Adjustable ratio of 20%
Air Management (AM)
Variable Air Volume (VAV)
FIGURE 26: Air Handler Styles
MUA - MAKE UP AIR (All Models)
AM - AIR MANAGEMENT (All Models)
Floating Damper
48
S M
ERVICE ANUAL
Air Flow Air Volume
100% Outside Air Constant
Non-adjustable ratio of
20% outside air and Constant
80% return air
outside air and 80%
return air to 100% out- Constant
side air and 0% return
air
Variable
100% Outside Air 50% -
100%
Control
-
-
Building Pressure
Controls Outside/
Return Air Ratio
Building Pressure
Controls Air
Volume
Requirement
FR - FIXED RETURN (All Models)
VAV - VARIABLE AIR VOLUME (All Models)
Floating Damper