4
Unitary Products Group
2.
Remove the shipping carton and inspect for possible
damage.
3.
Compressor tie-down bolts should remain tightened.
4.
Position the unit on the base provided.
5.
Sit unit on the (4) rubber elevating grommets provided
with the unit. These should be positioned as shown in
Figure 2 to reduce noise and allow for proper drainage.
6.
Make a hole(s) in the structure wall large enough to
accommodate the insulated vapor line, the liquid line and
the wiring.
DISCHARGE LINE FILTER-DRIER
The E*FD 018 - 042 heat pumps have a solid core filter-drier
located in the discharge line. Due to its location in the refrig-
erant circuit it requires a unique oversize capacity drier. E*FD
048 and 060 have a solid core bi-flow filter/dryer on the liquid
line.
NOTE: Replacement of the discharge line drier must be the
exact same as marked on the original factory drier. See
Source 1 for O.E.M. replacement driers.
PIPING CONNECTIONS
The outdoor condensing unit may be connected to the indoor
evaporator coil using field supplied refrigerant grade copper
tubing that is internally clean and dry. Units should be
installed only with the tubing sizes for approved system com-
binations as specified in Tabular Data Sheet. The charge
given is applicable for total tubing lengths up to 15 feet. See
Application Data Form 690.01-AD1V for installing tubing of
longer lengths and elevation differences.
NOTE: Using a larger than specified line size could result in oil
return problems. Using too small a line will result in loss
of capacity and other problems caused by insufficient
refrigerant flow. Slope horizontal vapor lines at least 1"
every 20 feet toward the outdoor unit to facilitate proper
oil return.
PRECAUTIONS DURING LINE INSTALLATION
1.
Install the lines with as few bends as possible. Care must
be taken not to damage the couplings or kink the tubing.
Use clean hard drawn copper tubing where no apprecia-
ble amount of bending around obstruction is necessary.
If soft copper must be used, care must be taken to avoid
sharp bends which may cause a restriction.
2.
The lines should be installed so that they will not obstruct
service access to the coil, air handling system or filter.
3.
Care must also be taken to isolate the refrigerant lines to
minimize noise transmission from the equipment to the
structure.
4.
The vapor line must be insulated with a minimum of 1/2"
foam rubber insulation (Arm-A-Flex or equivalent). Liquid
lines that will be exposed to direct sunlight and/or high
temperatures must also be insulated.
Tape and suspend the refrigerant lines as shown. DO NOT
allow metal-to metal contact. See Figure 3.
FIGURE 2 : POSITIONING GROMMETS
UNIT
BASE
PAN
RUBBER
ELEVATING
GROMMETS
(4)
Note:DoNotblockdrainage
holeswithgrommets.
UNIT
BASE
PAN
RUBBER
ELEVATING
GROMMETS
(4)
Failure to do so or using a substitute drier or a granular
type may result in damage to the equipment.
Filter-Drier
Source 1 Part No.
Apply with models:
E*FD
026 - 35442 - 000
018, 024, 030, 036
026 - 25596 - 001
042
026 - 25512 - 000
048, 060 (Bi-flow on Liquid Line)
