9
Wiring Connections
In the U.S.A., wiring must conform with current local
codes and the current National Electric Code (NEC). In
Canada, wiring must conform with current local codes
and the current Canadian Electrical Code (CEC).
Refer to unit nameplate for minimum circuit ampacity and
maximum overcurrent protection size.
1. Lift indoor unit front panel to access the control
box over. Remove the screw(s) securing the cover.
Remove the plate.
2. Locate the terminal strip in the control box. Connect
the power wiring (sized per NEC/CEC and local
codes) and communications cable
(three-conductor,
shielded cable).
Refer to unit nameplate for rated
voltage.
3. If the indoor unit is the final unit in a group that is wired
in series, install the provided resistor across terminals
P and Q.
4. Remove spacer. Secure bottom of unit to wall mounting
bracket. Continue with installation of outdoor unit and
system commissioning.
CONTROL BOX
COVER
L1 L2
POWER WIRING
COMMUNICATION
WIRING
VWMB007H4, VWMB009H4, VWMB012H4,
VWMB015H4, VWMB018H4
VWMB024H4, VWMB030H4
POWER WIRING
COMMUNICATION
WIRING
CONTROL BOX
COVER
Figure 11. Accessing Control Box
Capacity
Brand
Model
Name
Model # Cat #
Max Flow
Rate
(gal per hr)
Max
head (ft.)
Max
suction
lift*
VWMB007H4 - VWMB018H4
Blue
Diamond
MicroBlue X85-003 14T74
1.3
16
6 ft
VWMB007H4 - VWMB018H4
MicroBlue
Fascia Kit
T18-016 17A24
-
-
-
VWMB024H4 - VWMB030H4
MaxiBlue
w Reservoir X87-721 14T69
3.7
23
16.5 ft
VWMB024H4 - VWMB030H4
MaxiBlue
w DrainStik
X87-722 17A23
3.7
23
16.5 ft
*Optional pump maximum suction lift is measured from the pump outlet.
Table 3. Condensate Pump Accessory Options
NOTE -
Two-conductor shielded cable must be used for
the communication wiring. This is necessary to
ensure
proper system communication and operation.
WARNING
Isolate the power supply before accessing unit electrical
terminals.
Install unit so that unit disconnect is accessible.
Follow all local and national codes, as well as this
installation instruction, during installation. Do NOT
overload electrical circuit, as this may lead to failure and
possible fire.
Use specified wiring and cable to make electrical
connections. Clamp cables securely and make sure that
connections are tight to avoid strain on wiring. Insecure
wiring connections may result in equipment failure and
risk of fire.
Wiring must be installed so that all cover plates can be
securely closed.
CAUTION
This unit must be properly grounded and protected by a
circuit breaker. The ground wire for the unit must not be
connected to a gas or water pipe, a lightning conductor
or a telephone ground wire.
Do not connect power wires to the outdoor unit until
all other wiring and piping connections have been
completed.
Install all wiring at least 3 feet away from televisions,
radios or other electronic devices in order to avoid the
possibility of interference with the unit operation.
Do not install the unit near a lighting appliance that
includes a ballast. The ballast may affect remote control
operation.
