Recommended Items Sold Separately; Dimensions - Lennox iHarmony 10C16 Installation And Setup Manual

Zone Damper Transformer
The zone dampers are powered by a field−provided 24VAC transformer.
Zone dampers typically require 6 to 12VA each depending on zone damper
manufacturer being used. The zone damper transformer must have an adequate
VA rating to serve all components (see recommendations in following table).
The damper control module (nominal 24VAC, 2AMP with 4 dampers closed)
and three in- zone thermostats require a total of 6VA to operate.
Table 1. Zone Damper Transformer Selection Chart
Catalog
Size Description
Number
10P17 40VA
10P87 50VA
120 / 208 240VAC,
24VAC
12P61 75VA

Recommended Items Sold Separately

Lennox recommends for furnace applications the use of air baffles to help in
mixing the supply air for better Discharge Air Temperature Sensor accuracy.
Table 2. Recommended Air Baffles for Furnaces
Furnace Width Type
B
C
D
Table 3. Electrical Box
Description
Electrical Box (4-in. Square)
VA LOAD =
Damper VA x number of dampers
+ 6VA (damper control module +
3 in -zone thermostats) = damper
transformer VA requirement.
Cat # Width
13X59 16"
13X60 19-1/2"
13X62 23"
Catalog Number
83P74

Dimensions

2" (50mm)
Figure 1. Dimension
3
9-1/4" (235mm)