CONTENTS
General ............................................................... 4
Duct Work ........................................................... 5
Filters ................................................................. 5
Installation ............................................................... 8
Placement ....................................................... 9
Feature ............................. 18
Start Up ................................................................... 23
General ............................................................. 23
Service Hints ..................................................... 23
Information ........................................................ 24
Phase Monitor .................................................... 24
Features ........................................................ 24
Manual 2100-720C
Page
2 of 42
Test Mode ...................................................... 25
Cooling .......................................................... 26
Mode ................................ 26
Service ..................................................................... 28
Motors ............................................................... 28
Heating ............................... 35
Heating ............................... 35
Heating ............................... 35
FIGURES
Figure 1 Front Control Panel Cover ...................... 5
Figure 2 Removing Left Filter .............................. 5
Figure 3 Removing Second Filter ......................... 6
Figure 4 Filter Tabs in Up Position ....................... 6
Figure 5 Bend FIlter Tabs Down ........................... 6
Figure 6 Remove Four Screws ............................. 6
Figure 7 Re-Install Filter Support Brackets into
Lower Slots .......................................... 6
Figure 8 Re-Install Screws and Bend Tabs Up ....... 6
Figure 9 Install Right 2" Filter ............................. 7
Figure 10 Install Left 2" Filter ............................... 7
Figure 11 Fresh Air Damper .................................. 7
Figure 12 Vent Installation/Removal Clearance
Required ............................................ 11
Figure 13 Unit Dimensions ................................. 12
Figure 14 Mounting Instructions.......................... 13
Figure 15 Electric Heat Clearance ....................... 14
Figure 16 Wall Mounting Instructions .................. 15
Figure 17 Wall Mounting Instructions .................. 15
Figure 18 Common Wall Mounting Installations .... 16
Figure 19 High Voltage Connections .................... 17