18-BB41D1-1A-EN
17
Table 10.
Field Wiring Diagram
COMMON
FAN
COMPRSSOR
1ST STAGE ELECTRIC HEAT
2ND STAGE ELECTRIC HEAT
SWITCHOVER VALVE
DEFROST CONTROL 'T' SIGNAL
24 VOLTS
B
G
Y
W1
W2
O
T
R
UNIT LOW VOLTAGE AREA
TYPICAL THERMOSTAT
UNIT HEATER AREA
ELECTRIC
HEATER
CONTROL
BOX
POLARIZED
PLUG
UNIT CONTROL BOX
3 PH
POWER
UNIT
NOTE 1,8
3 PH
POWER
HEATER
1 PH
POWER
1 PH
POWER
UNIT CONTROL
BOX
UNIT HEATER AREA
FACTORY PROVIDED
FIELD CONNECTED
WIRES
(BL)
(YL)
(GR)
(PR)
(OR)
(OR)
B
G
Y
W1
W2
O
T
R
(BR)
(RD)
(GR)
(BL)
(WH)
(WH)
(YL)
(OR)
1 PH
POWER
3 PH
POWER
GROUND
WIRE
SINGLE POWR ENTRY
W1
W2
(WH)
(WH)
W1
W2
(WH)
(WH)
HEATER SECOND STAGE AMBIENT
TEMPERATURE LOCKOUT
NOTE 7,8
UNIT LOW
VOLTAGE
AREA
OUTDOOR
THERMOSTAT
ACCESSORY
BAYSTAT033A
NOTE 10
HEATER AMBIENT
TEMPERATURE LOCKOUT
NOTE 7,8
UNIT LOW
VOLTAGE
AREA
OUTDOOR
THERMOSTAT
ACCESSORY
BAYSTAT033A
NOTE 10
TYPICAL THERMOSTAT
TYPICAL THERMOSTAT
TYPICAL 2-STAGE
THERMOSTAT
UNIT LOW
VOLTAGE AREA
UNIT LOW
VOLTAGE AREA
TO COMPR.
CONTACTOR
ELECTRIC
HEATER
CONTROL
BOX
HEATER
FUSES
UNIT
FUSES
SPE
ACCESSORY
KIT
TO ECONOMIZER
FACTORY PROVIDED
FIELD INSTALLED WIRES
NOTE 9
(NOT APPLICABLE TO THE
WCM---F MODELS)
FIG. 3
OUTDOOR THERMOSTAT ACCESSORY CONNECTIONS
FIG. 1
SINGLE POWER ENTRY ACCESSORY CONNECTIONS
FIG. 2
ECONOMIZER ACCESSORY
CONNECTIONS
GROUND
WIRE
SEE SPEK INSTALLER'S GUIDE
FOR ALL OTHER EXAMPLES
PACKAGED HEAT PUMP UNIT
Notes:
1. Fused disconnect size, power wiring
and grounding of equipment must
comply with codes..
2. Be sure power supply agrees with
equipment and heater nameplate.
3. Low voltage wiring to be 18 AWG
minimum conductor.
4.
See heater nameplate for current
rating of heater used.
5.
See unit and heater diagram for
electrical connection details.
6. If electric heater accessory is not
installed, omit the electric heater,
associated power wires and the “W”
and “X2” thermostat wires.
7. Fig 3 demonstrates connection of the
outdoor thermostat accessory only. For
further unit connection details refer to
the other figures.
8. The W1 wire is first stage electric heat.
If the electric heater accessory has two
heating stages, the W2 wire is second
stage electric heat..
9. When the BAYECON101A/102A or
BAYECON200A/201A economizer is
installed, the BAYRLAY004A relay
accessory kit is required to interface
the economizer to the heat pump for
proper system operation.
10. The BAYSTAT033A outdoor thermostat
accessory kit contains a thermostat
and a relay. The relay is not required to
be used in this application.
C
Co
on
nttrro
oll W
Wiirriin
ng
g ((C
Clla
assss IIII))
Low voltage control wiring should not be run in conduit
with power wiring unless Class 1 wire of proper voltage
rating is used. Route the thermostat cable or equivalent
single leads of No. 18 AWG colored wire from the
thermostat subbase terminals through the rubber
grommet on the unit. See
for the control entry (24V Entry)
location. Make connections as shown on the wiring
diagrams.
Do not short thermostat wires since this will damage
the control transformer.
Refer to the table below for recommended wire sizes
and lengths for installing the unit thermostat. The total
resistance of these low voltage wires must not exceed
one (1) ohm. Any resistance in excess of 1 ohm may
cause the control to malfunction because of the
excessive voltage drop.
Table 11.
Thermostat Wire Size and Maximum
Length
Wire Size
Maximum Length (Ft)
18
75
16
125
14
200
