1. Return Air Installation Return Air Installation

2. Installation Fundamentals Check the electrical service Room by room load calculation Select a matched system Design the distribution system Physical installation of the system Commissioning the system

3. Where to Place the Return? Central Location – Out of Direct Living Area

4. Air Handler Location ESP-3642

5. Flexible Return Duct (90° bend) Return Air Box Platform & Drain Pan 48” MIN. (6’ of duct) 96” MAX. (10’ of duct) copyright Mestek, Inc. 2004 Typical Attic Installation Up to 20’ or 0.25” W.C.

6. Protect your customers home copyright Mestek, Inc. 2004

7. Center the opening in the hallway

8. Drill pilot hole

9. Lay out return opening

10. Cut the hole

11. Remove framing only when necessary

12. Split Return Improves return air access Where rooms are decoupled from return 0.25” W.C. for entire return & filter Typically uses site-built mixing box

13. copyright Mestek, Inc. 2004 Make-Up Air