Installation guide

INSTALLATION INSTRUCTIONS R−410A Split System Heat Pump
16 428 01 5106 02
Specifications subject to change without notice.
Figure 17 - Additional Subcooling Tables
15 SEER 13 & 14 SEER
Subcooling Delta from Rating Plate
Value
Subcooling Delta from Rating Plate
Value
OUTDOOR UNIT TONNAGE OUTDOOR UNIT TONNAGE
Indoor Models 18 24 30 36 42 48 60 18 24 30 36 42 48 60
EN*4X60*24**   +3 
EHD4X60A** +3  +5 +3
FEM4X60**B*   +5 
(FVM/FCM)4X60**** +5 +5 +3  +5 +5 +5 +3
FXM4X60**A* +3  +5 +3
FS(M,U)4X60**A* +3  +5 +3
TROUBLESHOOTING
Some models are factory equipped with the Comfort
Alertt Diagnostics device in the control box (refer to
Figure 17). Comfort Alert provides around−the−clock
monitoring for common electrical problems, compressor
defects, and broad system faults. If trouble is detected, an
alert code is displayed with a flashing LED indicator. Alert
codes are listed in Figure 18.
The device is factory wired and requires no
modification. Low voltage lead wires are provided in the
control box for connection to thermostat wires (use wire
nuts).
The Comfort Alert device operates by monitoring the
compressor power leads and the thermostat demand
signal (Y terminal). It draws constant 24 VAC power at the
R and C terminals.
Figure 17
Comfort Alertt Diagnostics
(some models)
R
Y
C
24 VAC Common
Thermostat Demand
24 VAC Hot
Compressor Wires
Pass Through Holes (3)
R
S
C
“Power” LED
“Alert” LED
“Trip” LED
MAINTENANCE
Condensate Drain
During the cooling season, check monthly for free flow of
drainage and clean if necessary.
Cleanliness
These tips will help keep the heat pump looking better and
working more efficiently:
1. Free flow of air is essential. Keep fences, shrubs,
trash cans, and other obstructions at least 18
inches (457mm) from all coil inlets.
2. Keep the coil free of grass clippings, leaves,
weeds, and other debris.
NOTE: Coil may occasionally require cleaning with
a liquid solution. The coil must be cold when
cleaning. Use an alkaline based cleaner only.
Cleaning a hot coil or using an acid based cleaner
will remove the paint from the fins and may clog the
coil.
3. Never use a weather cover over the outdoor unit
unless it is a ventilated type or made of breathable
fabric that will allow moisture to evaporate rapidly.
A cover that holds moisture in the unit will cause
more rust build−up and damage than normal
exposure to weather.