Page 3
OPTIONS / ACCESSORIES
Item Description
Catalog 
Number
Unit Model No
156 180 210 240 300
CONTROLS
Blower Proving Switch 21Z10 OX OX OX OX OX
Commercial 
Controls
LonTalk
®
 Module - For Lennox
®
 CORE Control System 54W27 OX OX OX OX OX
Novar
®
 LSE Factory O O O O O
L Connection
®
 Building Automation System - - - X X X X X
Dirty Filter Switch 53W68 OX OX OX OX OX
Fresh Air Tempering 21Z08 OX OX OX OX OX
Smoke Detector - Supply or Return (Power board and one sensor) 83W40 OX OX OX OX OX
Smoke Detector - Supply and Return (Power board and two sensors) 83W41 OX OX OX OX OX
INDOOR AIR QUALITY
Air Filters
Healthy Climate
®
 
24 x 24 x 2 in.
 54W67 OX OX OX OX OX
 52W40 OX OX OX OX OX
 21U42 OX OX OX OX OX
Replacement Media Filter With Metal Mesh Frame 
 44N61 X X X X X
 77N39 X X X X X
 87N53 X X X X X
Sensor - Black plastic case with LCD display, rated for plenum mounting 87N52 X X X X X
Sensor - Wall-mount, black plastic case, no display, rated for plenum mounting 87N54 X X X X X
CO 85L43 X X X X X
Aspiration Box - for duct mounting non-plenum rated CO sensors (87N53 or 77N39) 90N43 X X X X X
Needlepoint Bipolar Ionization (NPBI) Kit 21U37 OX OX OX
21U38 OX
21U39 OX
UVC Germicidal Light Kit
1
 Healthy Climate
®
 UVC Light Kit (110/230v-1ph) 21A94 OX OX OX OX OX
Step-Down Transformer  10H20 X X X X X
575V primary, 230V secondary 10H21 X X X X X
ELECTRICAL
 208/230V - 3 phase Factory O O O O O
 Factory O O O O O
575V - 3 phase Factory O O O O O
HACR Circuit Breakers Factory O O O O O
² Short-Circuit Current Rating (SCCR) of 100kA (includes Phase/Voltage Detection) Factory O O O O O
Disconnect Switch 
80 amp OX OX OX OX OX
150 amp OX OX OX OX OX
250 amp OX
GFI Service 
Outlets
 74M70 OX OX OX OX OX
 Factory O O O O O
 67E01 OX OX OX OX OX
Weatherproof Cover for GFI 10C89 X X X X X
1
 
Alternately, 110V power supply may be used to directly power the UVC ballast(s).
2
 Disconnect Switch not available with higher SCCR option.
X = Field Installed