Friedrich 920-087-09 (12/10) Manuel D’Utilisation

26

Desk Control Terminals

The.Friedrich.PD.model.PTAC.has.built-in.provisions.for.connection.to.an.

external.switch.to.control.power.to.the.unit..The.switch.can.be.a.central.

desk.control.system.or.even.a.normally.open.door.switch.
For.desk.control.operation.connect.one.side.of.the.switch.to.the.D1.terminal.

and.the.other.to.the.D2.terminal.(See.Figure.31,.Page.23)..Whenever.the.

switch.closes.the.unit.operation.will.stop.

NOTE:.

The.desk.control.system.and.switches.must.be.field.supplied.

Energy Management

Sometimes.known.as.Front.Desk.Control,.an.input.is.provided.so.that.the.

unit.can.be.manually.disabled.from.a.remote.location...If.the.unit.detects.

24Vac.on.this.input,.it.will.automatically.turn.itself.off...If.no.voltage.is.

detected.on.the.input.,.the.unit.will.run.normally.

NOTE:..

It.is.the.installer's.responsibility.to.ensure.that.all.control.wiring.

connections.are.made.in.accordance.with.the.installation.

instructions..Improper.connection.of.the.thermostat.control.

wiring.and/or.tampering.with.the.unit's.internal.wiring.can.

void.the.equipment.warranty..Other.manufacturer's.PTACs.

and.even.older.Friedrich.models.may.have.different.control.

wire.connections...Questions.concerning.proper.connections.

to.the.unit.should.be.directed.to.Friedrich.

Turn off electrical power before service

or installation.

ALL electrical connections and wiring

MUST be installed by a qualified

electrician and conform to the National

Code and all local codes which have

jurisdiction.

Improper connection of the thermostat

control wiring and/or tampering with the

units internal wiring may result in property

damage, personal injury or death.