Enertech AV Series - Section 7: Field Wiring; Introduction; Communication

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Enertech Global, LLC 37

AV : MD/ME - Rev. A Models

Installaon and Operaons Manual

Optional connections

Communication

F2120 communicates with NIBE indoor modules/contr ol

modules by connecting a three core, screened cable (max

area 0.75 mm²) to terminal block X22:1– 4, as shown in

the following image.

For cascade connection, join terminal block X23 with

X22 to the next heat pump .

Softwar e version

In order for F2120 to be able to communicate with in-

door module (VVM ) / contr ol module (SMO ) the softwar e

version must be according to the table.

Softw ar e versionIndoor module /

Contr ol module

v7568R4VVM 310 / VVM 500

v7530R5VVM 320 / VVM 325

v7607R3SMO 20

v7635R5SMO 40

Disconnect the connections in F2120

PRESS

PULL

LEK

Pull up!

Push down!

1 2 3

29Chapter 5 | Electrical connectionsNIBE F2120



• EAV does not include a circuit breaker on the incoming

power supply. The heat pump’s supply cable must be

connected to a circuit breaker. A disconnect must be

installed near the unit per local code requirements.

• The roung of cables for heavy current and signals should

be made out through the cable openings on the heat

pump’s right-hand side, seen from the front.

• The communicaon cable must be a shielded cable and

be connected between EAV terminal block X22 and the

indoor module/control module

• Connect the ushing pump to the indoor module/control

module.

Note: Electrical installaon and wiring must be carried out in

accordance with local code by a qualied technician.



A power block is provided for incoming power to the EME/

EMD. This circuit supplies power to all of the controls, internal

pump, and immersion heater (if equipped).

Note: Reference the electrical data for circuit sizing.

Low Voltage

The EME/EMD eld wiring provides dry contact inputs to

interface directly with industry standard zone controllers and

aquastats. These are indicated with the following input pairs:

Heat: Radiant heang demand input

HHeat: Air handler heang demand input (120°F outlet

temperature)

Cool: Air handler cooling demand input (low temperature

water)

DHW: Domesc hot water thermistor (connect to thermistor

that is pre-installed in Turbomax tank)

OAT and OAT: These Terminals are Not Used, The outdoor

sensor is located in the Outdoor Unit, BT28 Sensor.

Secon 7: Field Wiring



EAV communicates with Enertech indoor modules/control

modules by connecng a 3-conductor, shielded cable (max

area 0.75 mm²) to terminal block X22:1–4, as shown in the

following images.



Line Voltage



Enertech Global

AV/EM Models IOM

NOTE: USE THE UNINSULATED

CONDUCTOR FOR THIS CONNECTION.

Outdoor Unit Control Board

NOTE: USE THE 2 INSULATED

CONDUCTORS FOR A & B

Communica ons Wiring Between

Indoor and Outdoor Units

NOTE:

USE THE UNINSULATED

CONDUCTOR FOR GND

CONNECTION