Application Guidelines

Comparison to 17 SEER 2-stage Air Conditioner Systems
This new model offers several benefits compared to two-stage systems. Below is a
comparison of the new ICP inverter variable speed model compared to the 17 SEER
two-stage model:
ICP Inverter with Observer Control
*VA9
17 SEER two-stage
*CA7
SEER
Up to 19
Up to 17.5
EER
Up to 13
Up to 13.5
Compressor
Type
Variable-speed Rotary
2-stage Scroll
Compressor
Stages
5 stages as low as 25%
2 stages as low as 70%
Line length
Up to 100ft equivalent length
Up to 250ft equivalent length
Fan motor
Compact ECM(Brushless DC)
No module attached
Inverter driven
Standard PSC
Ambient
range
Cool: 40º-115ºF communicating
(4.4º-46.1ºC)
Cool: 55º-115ºF non-communicating
(12.8-46.1ºC)
Not initially qualified for low ambient
cooling
Cool: 55º-125ºF (
12.8º-51.7C)
Low ambient cooling capable
with kit
Sound
56 dBA – 72 dBA
67dBA – 72 dBA
Basepan sizes
24, 25 and 36 sizes - 23”x23”
37, 48 and 60 sizes - 31.25” x 31.25”
49 size – 35”x35”
24 size - 31.25 x 31.25
36, 48, 60 sizes - 35”x35”
AHRI Ratings
with
Observer compatible communicating
indoor for full 5-stage functionality
with Observer Control
Observer compatible
communicating indoor for 2-
stage functionality with
Observer Control
2-stage indoor for 2-stage
functionality with 2-stage non-
communication thermostat
2-stage indoor for 2-stage
capability with 2-stage non-
communicating thermostat