Hessaire H Serie Instrucciones De Instalación página 11

Indoor Unit Installation: 4.6 Connect Refrigerant Piping
Connecting Refrigerant Piping To Refrigerant Pipe Stubs From Indoor Unit:
From the exterior of the house, gently bend pipe/drain/cable stub downward toward the outdoor unit location.
Note: Support piping while bending to prevent kinks. Keep piping stub as close to exterior wall as possible.
Once piping/drain/cable stub is bent downward, line sets are ready to be connected. See Fig. 4.6.
Remove cap nuts from ends of refrigerant piping on stubs coming through wall. Note: Indoor unit piping line is
filled with nitrogen for factory leak test. Upon removing cap nut, there will be a brief "hissing" sound. This is
normal and the sound will quit in a few seconds. This is not refrigerant escaping.
Gently uncoil line set (2 pipes) and connect the flare nut from the line set end to the piping stub from the indoor
unit and hand tighten. Do this for both lines. Fig. 4.6b. Note: Only uncoil enough line set piping to reach the
ground behind the outdoor unit. Excess piping will remain on ground behind outdoor unit.
Using two wrenches, securely tighten the fittings on both lines—Fig. 4.6b. Refer to chart below in Fig. 4.6c for
proper torque values to prevent under or over tightening. Note: Overtightening may deform or damage copper
lines.
Fig. 4.6
Indoor Unit
Side View
Indoor Unit
Side View
Model Number
H12E1, H12HP1A, H12HP2A (1 Ton)
H18E2, H18HP2A (1.5 Ton)
H24HP2A (2 Ton)
H12E1, H12HP1A, H12HP2A (1 Ton)
H18E2, H18HP2A (1.5 Ton)
H24HP2A (2 Ton)
Indoor Unit Installation: 4.7 Connect Drain Tubing Extension
Connect drain tubing extension piece to the drain stub from the interior unit. Drain tubing should run straight
downward along side the refrigerant piping and communication cable. Fig. 4.6
122821
Exterior
Piping/Drain/Cable Stub
From Indoor Unit Before
Positioning Downward
Piping/Drain/Cable Stub
Correct Position After Gently
Bending Downward
Connect Drain Tube
Extension
Fig. 4.6c
Pipe Size
Liquid Side: 1/4" 11-15 ft/lbs
Liquid Side: 1/4" 11-15 ft/lbs
Liquid Side: 3/8" 22-26 ft/lbs
Gas Side: 3/8" 22-26 ft/lbs
Gas Side: 1/2" 37-41 ft/lbs
Gas Side: 5/8" 44-48 ft/lbs
9
Fig. 4.6b
Torque Nut Width Min. Thickness
.625"
.625"
.875"
.875"
.94"
1.1"
Skill Level Skill Level 2
1
Flare Nut
.02"
.02"
.024"
.024"
.024"
.024"