Unit Wiring - COMFORT-AIRE Century VMH09SU Series Installation And Operation Manual

Installation and Operation Manual - VMH 09/12/18/24 SU Series
VMH 09/12/18/24 SU/30 SD Inverter Mini-Split

Unit Wiring

WARNING
• Before performing any electrical work, ensure
all power is off. Electrical shock may occur.
• All outdoor unit's capacitors need to
discharge otherwise electrical shock hazard
may occur.
• Ensure the unit is properly grounded.
ELECTRICAL WIRING
AND SUPPLY VOLTAGE:
All electrical wiring must be done according to
local codes. Additionally installations in the USA,
must conform to the current National Electric Code
(NEC) and Installations in Canada must conform to
current Canadian Electric Code (CEC). Nameplate
data indicates the operating voltage, phase,
ampacity, maximum over current protection, and
minimum voltage.
Model
POWER
(outdoor)
CIRCUIT BREAKER/FUSE (A)
MINIMUM CIRCUIT AMPACITY
NOTE: Subject to change. Always refer to unit's nameplate.
The contractor is to provide an individual branch
circuit for over current protection for the unit as
required by code. Some codes may require a
disconnect between the indoor and outdoor unit.
Run power supply wiring through a weatherproof
disconnect box and conduit to the unit connection.
Disconnects are required to be within sight and
easy reach of the unit (usually within 3 feet).
Circuit breakers and disconnect switches should
be properly sized based on the required codes and
the unit's nameplate requirements. (Fig.21)
Check the unit wiring diagram for the number of
conductors required. Ensure that the proper AWG
(gauge) and type of wire is used to comply with
code and the unit's nameplate. Route neatly and
protect from sharp edges and damage.
Inadequate wiring and/or improper electrical
supply will likely result in failure of the compressor
and other electrical components and voids the
warranty.
BTUH/H 9
PHASE 1 Phase
VOLT 208/230V
15
9
Fig. 21
Power supply cord
Power supply
1 o 208-230V~60Hz
Branch circuit breaker
12
12
12 18
1 Phase 1 Phase
208/230V 208/230V
15 25
9 16
Heat Controller
24
1 Phase
208/230V
30
25