Rapid 2005, Installation, Operation & Service Manual

Page: 119 / 162

SECTION 1 8 : S
EQUENCE OF
O
PERATION
109 of 147
Table 17: Confi g uration Chart
FIGURE 71: Air Handler Styles
Air Handler
Confi g uration
Air Flow Air Volume Control
Make Up Air (MUA) 100% O u tside Air Constant -
Fixed Recirc u lation (FR)
Non-adj u stable ratio of
20% o u tside air and
80% ret u rn air
Constant -
Air Management (AM)
Adj u stable ratio of 20%
o u tside air and 80%
ret u rn air to 100% o u t-
side air and 0% ret u rn
air
Constant
B u ilding Press u re
Controls O u tside/
Ret u rn Air Ratio
Variable Air Vol u me (VAV) 100% O u tside Air
Variable
50% -
100%
B u ilding Press u re
Controls Air
Vol u me
Req u irement
DAMPER
FLOATING
DAMPER
FLOATING
MUA - MAKE UP AIR (All Models) FR - FIXED RETURN (All Models)
VAV - VARIABLE AIR VOLUME (2010 and 2010B) AM - AIR MANAGEMENT (2010 and 2010B)
VAV - VARIABLE AIR VOLUME (2020 and 2030) AM - AIR MANAGEMENT (2020 and 2030)
Floating Damper Floating Damper