Application Guidelines

ICP Inverter Heat Pump System Matching with Existing Indoor Equipment
ICP Inverter
Heat Pump
w/ Existing Indoor
System
Fan Coil or
Furnace?
Fan Coil
Furnace
2006-Present or
1992-2005?
Not Compatible
Before 1992
Multi-Stage or
Single Stage
Fan Coil?
Multi-Stage or
Single Stage
Fan Coil?
2006 –
Present
1992-
2005
VS, 2-Stage Non
Communicating,
or Single Stage?
 Backward Compatible to any Observer Capable
furnace
 Wi-Fi Observer Control with Version 5.0 software or
newer for Communicating Operation
 Full functionality with upgraded Wi-Fi Observer
Control
 2-Stage Operation with 2-Stage Thermostat
 Check AHRI Ratings for current furnaces
 High Speed Airflow; 350-400 cfm/ton
 Low Speed Airflow; 70-80% of High Stage
 1-Stage Operation until Indoor can be upgraded
 1-Stage Operation with 1-Stage Thermostat
 Set airflow to 350-400 cfm / ton
Variable Speed
Communicating
2-Stage
Non-Communicating
Single
Stage
Indoor Coil
2006-Present or
1992-2005?
Not Compatible
Before 1992
2006 –
Present
1992-
2005
 See ratings for FVM4, FCM4 matches*
 5 stages with FCM4 and Wi-Fi Observer Control
with Version 5.0 software or newer
 2 stages with FVM4 and 2-stage thermostat
 R-410A refrigerant TXV required on indoor
 *2 and 3 ton outdoor unit not compatible with 60
size fan coil
 Straight Match or one
size larger than outdoor
tonnage
 R-410A Refrigerant TXV
required
 Must be 1 or 2 sizes
larger than outdoor
tonnage
 R-410A Refrigerant TXV
required
Multi-Stage
Fan Coil
 One stage of operation with thermostat until
indoor can be replaced
 Straight match or one size larger indoor
 R-410A refrigerant TXV required on indoor
 Wire as single stage unit.
 Set Airflow to 350-400 cfm/ton
Single-Stage
Fan Coil
Multi-Stage
Fan Coil
Single-Stage
Fan Coil
 See ratings for FCM4 matches
 5 Stage with FCM4 fan coil and Wi-Fi Observer
Control with Version 5.0 software or newer
 FVM4 - match size same as current FV*
 R-410A refrigerant TXV required on indoor
 2 stages with FVM4 and 2-stage stat
 *2 and 3 ton not compatible with 60 size fan coil
 One stage of operation until indoor can be upgraded
 Indoor must be one size larger than outdoor
 R-410A refrigerant TXV required on indoor
 Wire as single stage unit
 Set Airflow to 350-400 cfm/ton
* Examples
 Straight matched to outdoor unit tonnage –
3-ton ICP Inverter with 3-ton furnace or fan
coil
 1 size larger indoor – 3-ton ICP Inverter with
3.5 ton furnace or fan coil
 2 sizes larger indoor – 3-ton ICP Inverter with
older 4 ton furnace coil