Bosch SM024 Installation Manual download pdf (Page 11)

Thermostat Wire Connections | 11SM Series Electric Heat

8 733 904 449 (2013/04)SM Series Electric Heat

20. Use push in wire ties to secure cables to cover

and blower bracket.(Figure#34)

Figure # 34

THERMOSTAT WIRE CONNECTIONS

1. Assure that two low voltage wires are available

from the thermostat to make the “W1” and

“EM” connections. If these wires are not

located, they will need to be pulled and routed

from the back of the thermostat to main

thermostat connections on the electrical box

or to the motor control board.

2. Strip the insulation off of the “W1” and “EM”

wires and insert into the thermostat control

wire block or on the motor control board

thermostat interface. Connect the other end of

the wires to the back of the thermostat to the

supplemental and emergency heat terminals.

Reference the Thermostat User’s Manual for

proper connection.

Figure # 35

SITE LINE VOLTAGE CONNECTION

Routing New Line Voltage Wires

From Circuit Breaker Panel To Heater

Electrical Box

1. Select the proper wire size based upon the

heater electrical load that the blower motor

and electric heater element(s) will require.

Refer to the data tag label that is included in

the heater kit or the electrical data at the end

of this manual. Ensure that all national and

local electrical codes are followed for

installation, wire sizing, and breaker sizing.

2. Select the proper breaker size based upon the

heater electrical load that the heat pump will

require. Refer to the data tag label that is

included in the heater kit or the electrical data

at the end of this manual.

3. Route the new line voltage wiring and the

ground wire from the circuit breaker panel to

the heat pump.

4. Use the knockout provided in the heat pump

corner post as the entry for the electrical

service wiring. A plastic bushing should be

used to protect the wire insulation from the

metal edge of the knockout

5. Connect one of the line voltage wires to “L1”

terminal connection and the other line voltage

wire to “L2” terminal connection. Torque to 22

in-lbs.

6. Use the ground lug provided in the heater

control box to connect the field ground from

the power supply.

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Bosch SM024 Installation Manual Page 11

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