10
POWER SUPPLY — Electrical characteristics of the
available power supply must agree with the unit nameplate
rating. Circuit breaker size and supply voltage must be as
shown in Table 9.
Table 9 — 38VMH Electrical Data
POWER WIRING — Installation of wiring must conform
with local codes and with NEC ANSI/NFPA 70, current
edition. Units must be electrically grounded in conformance
with the code. In Canada, wiring must comply with CSA
C22.1, Electrical Code.
General Wiring Notes
• Separate power sources are required for indoor and
outdoor units.
• Control circuit does NOT require separate power source.
• Power entry is on the right side of the unit when facing
the fan grille or front of the unit.
• Terminals for field power supply are suitable for copper
conductors.
• See Fig. 15 and 16 for power wiring.
Main Power — Bring wires from the disconnect switch
through the knockout hole at the bottom right corner of the unit
to the control box.
CAUTION
Operating the unit on improper supply voltage or with
excessive phase imbalance may result in equipment
damage and can affect the manufacturer’s warranty.
SUPPLY
VOLTAGE
POWER
SUPPLY
(V-Ph-Hz)
38VMH UNIT
SIZE
POWER SUPPLY
MCA*
MOPD
208/230-1-60
036
36
40
048
38
40
060
40
45
LEGEND
MCA
—
Minimum Circuit Amps
MOPD
—
Maximum Overcurrent
Protective Device
* Select wire size based on larger value of MCA.
Fig. 15 — Power Wiring
Fig. 16 — Individual Power Wiring