Echo 8870 Provide Power to the Distribution Panel, CHECK-OUT Hvac System Operation

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Step 9

PROVIDE POWER TO THE DISTRIBUTION PANEL

1.MAKE SURE THAT ALL SWITCHES IN THE DISTRIBUTION PANEL ARE OFF!

2.Use a 2-wire thermostat cable to connect the load terminals of the Model 8027 Plug-in Transformer to the 24V AC terminals of the Distribution Panel (see DIAGRAM 3).

3.Plug-in the transformer.

4.NO LEDs ON THE DISTRIBUTION PANEL SHOULD BE ON.

Step 10

TURN ON POWER TO ALL HVAC EQUIPMENT AND TO THE THERMOSTATS

1.Turn on power to the HVAC and/or zone control systems.

2.Go to the Distribution Panel and verify that no LEDs on the Distribution Panel are on. If none are on, proceed to # 3. If any LED is on, immediately unplug the transformer that powers the Distribution Panel.

4.One by one, turn on only the power switches (not the communication switches) for each thermostat. Verify that the green LED comes on and that the thermostat display powers up.

• If any LED is on, it is likely that

ILLUSTRATION 4 – Power Switches

 

 

the HVAC system transformer is

 

 

 

 

 

 

 

 

powering the thermostat.

 

 

 

A+ A-

B+ B- REF

 

A

Go to the thermostats, remove

 

 

 

 

 

 

 

 

 

 

 

B

thermostat from the base and

 

 

 

 

 

 

 

A+

 

A

 

 

 

 

A+

check the wiring. There must be

 

 

 

 

A

A-

 

ON

OFF

 

 

A-

no jumper between the RH or RC

 

 

OFF

ON

B+

 

B

 

 

B+

 

 

 

 

 

 

 

and R terminal. The Category 5

 

 

 

 

 

 

B

-

B

PWR

ON

OFF

 

OFF

ON

B

 

-

 

 

 

 

 

cable used to wire

R

 

 

 

 

 

PWR

R

C

 

 

 

 

 

C

 

 

 

 

 

 

 

 

communications and power

 

 

 

 

 

 

 

 

should supply the only wires

 

 

 

 

 

 

 

 

connected to the thermostat

A+

 

A

 

 

 

A

A+

R and C terminals.

A-

 

 

 

 

A-

 

ON

OFF

 

 

ON

B+

 

 

 

B+

3. Turn on the main power switch

 

B

 

 

 

B

-

 

 

 

 

-

 

 

 

 

 

 

B

 

B

 

ON

OFF

 

OFF

ON

then turn on the power switch to

R

PWR

 

R

 

 

 

 

PWR

one of the thermostats (see

C

 

 

 

 

 

 

C

 

 

 

 

 

MAIN

 

 

ILLUSTRATION 4). The green LED

 

 

 

 

 

 

 

 

 

 

24VAC

 

PWR

 

 

next to the power switch should

 

 

 

 

 

 

 

 

 

 

C

R

 

 

 

go on, and the corresponding

 

 

 

 

 

 

 

 

 

 

 

 

 

 

thermostat display should power

 

 

 

 

 

 

 

 

up. DO NOT TURN ON ANY

 

 

 

 

 

 

 

 

OTHER SWITCHES.

 

 

 

 

 

 

 

 

Each thermostats power LED lights when the “PWR” switch is turned on

Step 11

CHECK-OUT HVAC SYSTEM OPERATION

Use the thermostat buttons to verify that the thermostat is controlling the equipment operation. A checkout procedure is supplied in the installation instructions with the thermostat. This procedure will verify only that the thermostat operates the equipment. Communication system checkout will be performed next.

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Contents Communicating Thermostat System Installation Manual Step Communicating Thermostat System Installation ManualAppendix Model 8870 Thermostat Tools YOU will NEED…Model 8811 Protocol Adapter Model 8818 Distribution PanelModel 8870 Thermostat Use Category-5 cable for all communication wiringModel 8818 Distribution Panel Model 8061 and Model 8062 Support ModulesIllustration 2 Run Wire For System RUN the Required Wires see IllustrationFEW Minutes Spent Writing Down Locate and Mount the Automation System ComponentsIllustration 3 Network Interconnection Worksheet Fill Out and Leave with System Software PackageDiagram 1 Typical Heating / Cool Wiring Schematic Do not Turn on Hvac System Power YETDiagram 2 Typical Heat Pump Wiring Schematic Distribution Panel Communication System WiringCommunication Terminal Definitions Diagram 4 Thermostat Communication WiringConnect Multiple Distribution Panels Diagram 5 Multiple Distribution PanelsVAC Transformer provided w/ protocol adapter Diagram 6 Protocol Adapter WiringTurn on Power to ALL Hvac Equipment and to the Thermostats Provide Power to the Distribution PanelOther Switches CHECK-OUT Hvac System OperationAddress the Thermostats and SET Highest Address Illustration 5 Setting the Thermostat AddressTo the right of the message center display Press the Enter button to select this sub-menuIllustration 6 Access HyperTerminal Setup Computer for Communication System CheckoutTurn on the computer From the Start menu, select Programs Illustration 7 New ConnectionIllustration 8 Select Com Port Data bits Parity None Stop bits Flow control none Click OKIllustration 9 Connection Properties Illustration 10 Terminal Settings Press Enter to clear the command lineIllustration 11 Ascii Setup Click OK to put away both dialog boxesCHECK-OUT Communications to the Thermostat Network Illustration 12 Com SwitchesType SN? and press Enter Type SN ID? and press EnterAppendix Diagram 7 Adding an 8870 ThermostatIllustration 13 Remove Terminating Resistors Diagram 8 Adding an 8840 Series ThermostatCommand Response Syntax Aprilaire Command SETTo be set. The value must follow the action with no Thermostat Sensing Commands Communication Control CommandsThermostat Hvac Operational Commands Auxiliary Information CommandsFill Out and Leave with System Software Package DP 10005754
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