Specifications

Wall
Hanging
Bracket Hook
Hole
DIMENSION
UNIT SIZE
B
40QNC01824 10.6
40QNC030 12.2
40QN0036 12.2
40QNQ018 10.6
40QNQ024 10.6
40QNQ030 12.2
40QNQ036 12.2
Retainer Retainer
o\f ?
Fig. 11 -- Wall Hanging Details
Fig. 12 -- Removing Burrs
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Lubricate the robe end and thread of the flare fitting with
antitieeze oil. Tighten the fitting several turns, then ti_lten it
fully with two wrenches by applying the tightening torque indi-
cated in Table 4 and Fig. 14.
Insufficient tightening torque will cause gas leaks. Over-
ti_ltening the fittings will damage the tube tlaring and
cause gas leaks. Equipment damage and personal injury
may result.
AIR PURGING AND LEAK TEST d Only use a vacuum
pump to puNe air fiom the piping. Refer to Fig. 15.
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IMPORTANT: Do not use the system compressor as a [
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vacuulrl pulrlp.
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IMPORTANT: Do not use the unit refiigerant gas to purge [
the connecting pipes.
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Relnove the caps fioln the valves. Create a vacuum with a
vacuuln pump connected to the selwice connection of the
suction shut-off (gas), as shown, keeping the shutoff valves
colnpletely shut until a 50 Pa vacuum has been reached.
Open the mixed phase valve for 3 seconds, then quickly
shut it to check for possible leaks.
Replace caps and check for leaks using a leak detector
specific for R-410A refi-igerant.
After the leak test, fully open the tbaee-way valves.
Table 4 -- Tightening Torque
VALVE SIZE FLARE NUT (in.-Ib)
3/8 in. 372
5/8 in. 487
3/4 in. 885
®
@ Adjustable wrench or torque wrench
@ Outdoor end
@ Indoor end
®
Fig. 14 -- Tightening Connections
Fig. 13 -- Flared Walls are Equal