T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y
Vertical Stack
R e v. : 0 4 / 2 4 / 2 0 1 9
27
c l i m a t e m a s t e r. c o m
Electrical Wiring - Line Voltage
Electrical - Line Voltage
All fi eld installed wiring, including electrical ground,
must comply with the National Electrical Code as well
as all applicable local codes. Refer to the unit electrical
data for fuse sizes. Consult wiring diagram for fi eld
connections that must be made by the installing (or
electrical) contractor.All fi nal electrical connections must
be made with a length of fl exible conduit to minimize
vibration and sound transmission to the building.
WARNING!
To avoid possible injury or death due to electrical
shock, open the power supply disconnect switch and secure
it in an open position during installation.
CAUTION!
Use only copper conductors for fi eld installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
CAUTION!
General Line Voltage Wiring -
Be sure the available
power is the same voltage and phase shown on the unit
serial plate. Line and low voltage wiring must be done
in accordance with local codes or the National Electric
Code, whichever is applicable.
Power Connection -
Line voltage connection is made
by connecting the incoming line voltage wires to the “L”
side of the contactor.
208 Volt Operation -
All commercial 208-230 Volt units
are factory wired for 208 Volt operation. If supply voltage
is 230V, then the transformer must be rewired to the 230V
tap as illustrated on the wiring diagram by switching the
red (208V) and the orange (230V) wires at the contactor
terminal.
Unit wiring diagrams available at www.climatemaster.com.
Select ‘Commercial Professional ‘, ‘ Literature ‘,
‘ Wiring Diagrams’
.
Blower Speed Selection –
Units with PSC or ECM-CT Motor
PSC (Permanent Split Capacitor) blower fan speed can be
changed by moving the speed tap wires on the fan motor
terminal block. See Figure 12.
Note: Check blower table 5a-5g, must maintain minimum
CFM for your external static.
Blower Speed Selection – Units with ECM-CV Motor
CFM can be changed from default settings by using
ATC32U03C Thermostat or ACDU03C service tool with
11B0100N27 Harness. Use information in Table 5 to set
CFM for your static.
Special Note for AHRI Testing:
To achieve rated airfl ow
for AHRI testing purposes on all PSC products - TSL09
and 12 use high speed tap for heating and medium tap
for cooling. All other models use high speed tap for both.
When the heat pump has experienced less than 100
operational hours and the coil has not had suffi cient time
to be “seasoned”, it is necessary to clean the coil with a
mild surfactant such as Calgon to remove the oils left by
manufacturing processes and enable the condensate to
properly “sheet” off of the coil.
WARNING!
Disconnect electrical power source to prevent
injury or death from electrical shock.
WARNING!
H for High speed tap
M for Medium speed tap
L for Low speed tap
Fan Motor
Figure 12: PSC Motor Speed Tap Selection
Table 4
Thermostat
Unit
Type
Terminal
Factory Motor
Connection
Board Connection
1 Stage
G
Med TAP
G
DXM2/
CXM
2 Stage
Auto Speed
Change
G
Y2
Med TAP
High TAP
G
Y2
DXM2
G
BR2
CXM
Relay
2 Speed
Manual
Change
G
G2
Med TAP
High TAP
G
H
DXM2
G
BR2
CXM
Relay
WARNING!
