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C l i m a t e M a s t e r W a t e r- S o u r c e H e a t P u m p s
C L I M A T E M A S T E R W A T E R - S O U R C E H E A T P U M P S
Tr a n q u i l i t y
®
2 0 ( T S ) S e r i e s
R e v. : 0 6 / 1 7 / 1 5
Electrical - Power Wiring
CAUTION!
Use only copper conductors for fi eld installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
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.
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.
Figure 15: Single Phase Line Voltage Field Wiring.
Three phase wiring is similar except that all three
power wires are directly connected to the contactor.
Unit Power Supply
(see electrical table for
wire and breaker size)
Note: 460V units with
ECM motor require
a neutral wire.
Blower Speed Selection – Units with PSC Motor -
PSC (Permanent Split Capacitor) blower fan speed can
be changed by moving the blue wire on the fan motor
terminal block to the desired speed as shown in Figure
16. Most ClimateMaster units are shipped on the medium
speed tap. Consult submittal data or engineering design
guide for specifi c unit airfl ow tables. Typical unit design
delivers rated airfl ow at nominal static (0.15 in. w.g.
[37Pa]) on medium speed and rated airfl ow at a higher
static (0.4 to 0.5 in. w.g. [100 to 125 Pa]) on high speed for
applications where higher static is required. Low speed
will deliver approximately 85% of rated airfl ow at 0.10 in.
w.g. [25 Pa]. An optional high static blower is available on
some models.
Special Note for AHRI Testing:
To achieve rated
airfl ow for AHRI testing purposes on all PSC products,
it is necessary to change the fan speed to “HI” speed.
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.
CAUTION!
WARNING!
Power Connection
- Line voltage connection is made
by connecting the incoming line voltage wires to the
“L” side of the contractor as shown in Figure 15 or to
the optional service disconnect when provided. Consult
electrical data tables for correct fuse size.
Transformer
- All 208/230 voltage units are factory wired
for 208 volt. If supply voltage is 230 volt, installer must
rewire transformer. See wire diagram for connections.
Connect the blue wire to:
H for High speed fan
M for Medium speed fan
L for Low speed fan
Medium is factory setting
Fan Motor
Figure 16: PSC Motor Speed Selection
