HEIL DLFBHC12K1A Installation Instructions Manual page 12

12K to 24K 208/230V
L2 S
Fig. 21 - Control and Power Wiring on Indoor Unit
INSTALL ALL POWER, INTERCONNECTING
WIRING, AND PIPING TO THE INDOOR UNIT
1. Run interconnecting piping and wiring from outdoor unit to in-
door unit.
2. Run interconnecting cable from outdoor unit to indoor unit.
3. Route piping and drain (inside to outside). Fit the
interconnecting wiring into back side of indoor unit.
4. Open cover of indoor unit and remove field wiring terminal
block cover.
5. Pull interconnecting wire.
6. Connect wiring from outdoor unit per connection diagram (see
Fig. 19 and 20).
7. Replace field wiring cover and close the indoor unit cover.
8. Piping:
a. Cut the pipe, with a pipe cutter, at 90 degrees (see Fig. 22).
b. Remove the service connection, if provided with the unit.
90
Fig. 22 - Pipe Cutting
c. Remove all the burrs from the cut cross section of the pipe
avoiding any burrs inside the tubes.
d. Remove the flare nuts attached to the indoor and outdoor units.
e. Install the correct size flare nut onto the tubing and make the
flare connection. Refer to Table 7 for the flare nut spaces.
Table 7—Flare Nut Spacing
OUTER DIAM. (mm)
Ø 1/4" (6.35)
Ø 3/8" (9.52)
Ø 1/2" (12.7)
Ø 5/8" (15.88)
Bar
Copper pipe
Clamp handle
Fig. 23 - Flare Nut Spacing
f. Apply a small amount of refrigerant oil to the flare connection
on the tubing.
g. Align center of the pipes and/or service valve.
12
L1
Oblique Roughness Burr
A (mm)
Max. Min.
0.05 (1.3) 0.03 (0.7)
0.06 (1.6) 0.04 (1.0)
0.07 (1.8) 0.04 (1.0)
0.09 (2.2) 0.08 (2.0)
Handle
Bar
Yoke
Cone
Red arrow mark
Specifications subject to change without notice.
h. Connect both the liquid and gas piping to the indoor unit
i. Tighten the flare nut using a torque wrench as specified in Table
8.
PIPE DIAMETER INCH
(mm)
Ø1/4" (6.35)
Ø3/8" (9.52)
Ø1/2" (12.7)
Ø5/8" (15.88)
Flare nut
Copper tube
9. Connect the drain line.
WIRELESS REMOTE CONTROL INSTALLATION
Mounting Bracket (if installed on the wall)
1. Use the two screws supplied with control to attach the Mounting
Bracket to the wall in a location selected by customer and within
operating range.
2. Install batteries in Remote Control.
3. Place Remote Control into remote control Mounting Bracket.
NOTE:
For remote control operation, refer to the unit Owner's
Manual.
A150767
WIRED REMOTE CONTROLLER
For setup instructions, refer to the Wired controller installation manual.
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Never use the system compressor as a vacuum pump.
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used if the procedure outlined below
is followed. Always break a vacuum with dry nitrogen.
FINAL TUBING CHECK
IMPORTANT: Ensure certain factory tubing on the indoor unit has not
shifted during shipment. Ensure tubes are not rubbing against each
other or any sheet metal. Pay close attention to feeder tubes, making
sure wire ties on feeder tubes are secure and tight.
A150768
Indoor unit tubing Flare nut Piping
Fig. 24 - Align Pipe Center
Table 8—Tightening Torque
TIGHTENING TORQUE
Ft-lb
10 to 13
24 to 31
37 to 46
50 to 60
Fig. 25 - Tighten the Flare Nut
CAUTION
328 014525201
A150769
N-m
13.6 to 17.6
32.5 to 42.0
50.1 to 62.3
67.7 to 81.3
A150770