8
• Use a torque wrench for flare nuts. Refer to Table 5 for
flare nut torque recommendations.
Table 5 — Flare Nut Torque Recommendations
For unit size 012 to 048 the refrigerant pipe can be routed thor
-
ough bottom/rear of the unit as shown in Fig. 13. Table 6 shows
the length of pipe that should be coming out of the unit.
Fig. 13 —Routing the Refrigerant Pipe through the
Bottom
For unit size 012 to 024 the refrigerant pipe can be routed
through the right side of the unit as shown in Fig. 14. Pipe
lengths are shown in Table 6.
Fig. 14 —Routing the Refrigerant Pipe through the
Side
Table 6 — Pipe Lengths (Refer to Fig. 13 and 14)
Step 5 — Complete Electrical Connections
Installation of wiring must conform with local building codes
and with National Electric Code ANSI/NFPA 70, current
editions. Units must be electrically grounded in conformance
with the code. In Canada, wiring must comply with CSA
C22.1, Electrical Code.
This equipment in its standard form is designed for an
electrical supply of 208/230-1-60. Any damage to or failure of
units caused by incorrect wiring or voltage is not covered by
warranty.
Electric wiring must be sized to carry the full load amp draw of
the motor, starter, and any other controls that are used with the
unit. See Table 7 for electrical data.
Table 7 —40VMU Electrical Data
After the pipe work is complete, the electrical supply can be
connected by routing the cable through the appropriate casing
holes or knockouts and connecting the supply and ground
cables to the unit’s power terminal.
Be sure the power wiring and control wiring do not cross. This
might cause disturbance on the controls side. See Fig. 15 for
wiring diagrams.
OUTSIDE DIAMETER (IN.)
RECOMMENDED TORQUE (FT-LB)
1
/
4
15
3
/
8
26
1
/
2
41
5
/
8
48
40VMU UNIT
DIMENSION (in.)
a
b
c
d
012
2-
1
/
4
2-
1
/
4
4
4
015
2-
1
/
4
2
4
4
018,024
4-
3
/
4
4
4
4
030
5
5-
1
/
4
—
—
036,048
2-
3
/
4
2-
3
/
4
—
—
Gas side adapting pipe
(installation on-site)
Liquid side adapting pipe
(installation on-site)
a
b
Gas side adapting pipe
(only 012-024)
(installation on-site)
Liquid side adapting pipe
(only 012-024)
(installation on-site)
protect the plastic side
enclosure when brazing
d
c
WARNING
Electrical shock can cause personal injury and death.
Disconnect power supply before making wiring
connections. There may be more than one disconnect
switch. Tag all dis-connect locations to alert others not to
restore power until work is completed.
WARNING
All units must be wired strictly in accordance with the
wiring diagram furnished with the unit. Any wiring
different from the wiring diagram could result in personal
injury and property damage.
CAUTION
Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105 C.
Ensure supply voltage to the unit, as indicated on the serial
plate, is not more than 10% over the rated voltage or
10%under the rated voltage.
Failure to follow these recommendations may result in
equipment damage.
UNIT
POWER SUPPLY
MCA
MOPD
40VMU012
0.44
15
40VMU015
0.73
15
40VMU018
0.87
15
40VMU024
1.20
15
40VMU030
1.40
15
40VMU036
1.80
15
40VMU048
2.80
15
LEGEND
MCA
—
Minimum Circuit Amps
MOPD
—
Maximum Overcurrent
Protective Device