IMPORTANT:

If a relay box is installed, blower speeds for heating and cooling are set inside the relay box (see instructions included with relay box). The blower speed inside the furnace control box must be set to low or medium-low. Never change to a heating speed lower than that shown in Table 5.

Changing Blower Speed

E3EH: The selected heating blower lead is at- tached to the wire lead attached to terminal 2 of the blower selector switch.

a.Remove blower lead from the wire lead off of terminal 2.

b.Choose desired speed.

c.Attach new blower lead to wire lead off terminal 2 of blower selector switch.

E2EB: The selected heating blower lead is at- tached to terminal 6 on blower relay. The selected cooling blower lead is attached to terminal 4 on blower relay.

a.Remove heating blower lead from terminal 6 on blower relay.

b.Choose desired speed and install new blower lead onto terminal 6 of blower relay for new heating speed.

c.Remove cooling blower lead from terminal 4 on blower relay.

d.Install new blower lead onto terminal 4 of blower relay for new cooling speed.

E3EX: The selected heating blower lead is at- tached to terminal 6 on blower relay and is the red wire attached to the motor pin terminals 1-3. The selected cooling blower lead is attached to

terminal 4 on blower relay and is the blue wire attached to the motor pin terminals 1-3.

a.Remove heating and cooling leads from motor terminals 1-5.

b.Choose desired speeds and seat terminal back into motor terminals 1-5.

Same Speed, Heating and A/C: Use loose white jumper wire supplied with unit and jumper between terminals 5 & 2 on blower relay. On E3EX, remove one wire from motor terminals 1-5, while leaving one wire on the required blower speed.

See Table 6 for blower performance data.

Installing Control Circuit Wiring

NOTE: Installation of a fi ve-wire thermostat circuit is recommended to provide for future addition of a heat/cool thermostat.

1.Install the 24V control-circuit cable through

plastic bushing at either side of furnace.

a.For models without a relay box, connect wires to furnace at blower plug pigtails (see wiring diagrams). Secure all connections with wire nuts.

b.For units with a relay box installed, make wiring connections at relay box low-voltage terminal board. (See relay box installation

instructions.)

2.Route control circuit wiring to wall thermostat and outdoor section, if installed. (See relay box installation instructions if applicable.)

3.Set anticipator per Table 7 or per the mark- ing on the unit.

4.See Figure 31 (non-Platinum) and Figure 32 (Platinum) for E3EB thermostat connec- tions.

Plug/Receptacle Position

Pin1

 

Pin2

 

Pin3

Pin4

Pin5

2 Speed Blower

Low

 

High

-

-

-

4 Speed Blower

Low

Med-LO

 

Med-Hi

High

-

Control Box Blower Lead

Red

 

Yellow

 

Blue

Black

-

Minimum approved speed

 

 

 

 

 

Minimum approved speed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

for 010 and 012 models

 

 

 

 

 

for 015, 017, 020, 023

 

 

 

 

 

 

 

 

 

 

 

models

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Multi-Speed, E3EX

Low

Med-Lo

 

Med

Med-Hi

High

Table 5. Furnace Blower Speed Data

20

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Nordyne E3 user service Changing Blower Speed, Installing Control Circuit Wiring, Furnace Blower Speed Data
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E3 specifications

The Nordyne E3 is an innovative and efficient heating and cooling system designed to meet the demands of modern residential and commercial spaces. With a focus on energy efficiency and advanced technology, the E3 series offers a variety of features tailored to provide optimal comfort throughout the year.

One of the standout characteristics of the Nordyne E3 is its multi-stage heating and cooling capability. This system utilizes a two-stage compressor, which allows it to operate at different capacities based on the current temperature demand. By adjusting its output, the E3 can maintain a more consistent indoor climate while maximizing energy savings. This not only enhances comfort but also reduces energy bills over time.

The E3 series also includes a variable-speed blower motor, which significantly improves airflow management. This technology enables the system to operate quietly and efficiently, reducing energy consumption while providing precise temperature control. Homeowners can enjoy a comfortable environment without the disruptive noise often associated with traditional HVAC systems.

Another key feature of the Nordyne E3 is its advanced refrigerant technology. The system uses R-410A refrigerant, an environmentally friendly option that has a lower impact on ozone depletion compared to older refrigerants. This commitment to sustainability aligns with the growing demand for eco-friendly solutions in the HVAC industry.

Additionally, the Nordyne E3 incorporates integrated Wi-Fi connectivity, allowing users to control their system remotely via smartphone or tablet. This smart technology enables homeowners to adjust temperature settings, monitor energy usage, and schedule maintenance alerts from virtually anywhere.

Energy Star certification further highlights the E3’s commitment to energy efficiency. Systems bearing this label are rigorously tested to ensure they meet strict guidelines for energy consumption, providing peace of mind for consumers looking to reduce their carbon footprint.

In summary, the Nordyne E3 heating and cooling system stands out for its energy-efficient design, advanced technologies, and commitment to comfort. With features like multi-stage operation, variable-speed motors, eco-friendly refrigerants, and smart home compatibility, it represents a significant step forward in HVAC technology. Homeowners can rely on the E3 to create a comfortable living environment while also contributing to a more sustainable future.
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