System Introduction - Mitsubishi Electric PAA-A18 AA1 Operation Manual

4. System introduction

Vertical installation
Horizontal installation
© 2022 Mitsubishi Electric US, Inc.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
12
1. PAA unit cabinet
2. Control box
3. Heat exchanger (hex)
4. Main drain pan
5. Main drain pan primary drain
6. Main drain pan secondary drain
7. Side drain pan (for horizontal instal-
lation)
8. Side drain pan primary drain (for
horizontal installation)
9. Side drain pan secondary drain (for
horizontal installation)
10. TH1 thermistor
11. ACH065 (Non-Adjustable Thermo-
stat, NAT)
12. Float switch
13. Furnace drain pan (not included
with PAA unit)
14. Inlet duct (not included with PAA
unit)
15. Top plate (for horizontal installa-
tion)
NOTE
Items 13 and 14
are for reference only
and are not provided
by Mitsubishi Electric
US, Inc.
Specifications are subject to change without notice.