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Beta Draft Confidential

Installing and Wiring the Thermostat

Ultra-Zone Internet Zone Thermostat Installation Guide, Release 1.0

Part No. 600-01100-100, Rev. 1

Figure 2

shows an example of a Single-Stage Heat Pump HVAC system, with a “B”

type reversing valve connecting to an EWC base plate.

Figure 2

Single-Stage Heat Pump HVAC Connections

EWC Base Plate

Squ

re Hole

Wire

HVAC System

Compressor

Auxiliary
Heat

Fan
Control

Cool &
Heat
Power

Note: A heat pump is either a reverse for heat “B” or reverse for cool “O” model. The Ultra-Zone
IZT-100 uses Y2 for reverse cool and W2 is used for reverse heat.

Reverse for
Heat “B”

Содержание Ultra-Zone IZT-100

Страница 1: ...Ultra Zone Internet Zone Thermostat Installation Guide Release 1 0 Part No 600 01100 100 Rev 1 April 2007 ...

Страница 2: ...EGOING WARRANTIES ARE THE SOLE AND EXCLUSIVE WARRANTIES EXPRESSED OR IMPLIED GIVEN BY EWC CONTROLS INC IN CONNECTION WITH THE PRODUCT AND EWC CONTROLS INC DISCLAIMS ALL IMPLIED WARRANTIES INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS EWC CONTROLS INC DOES NOT PROMISE THAT THE PRODUCT IS ERROR FREE OR WILL OPERATE WITHOUT ...

Страница 3: ...is device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation CSA Power 24VAC 45mA 60Hz 48VDC 22mA 60Hz Switched power each contact 24VAC 2A 60Hz ...

Страница 4: ...Beta Draft Confidential iv Ultra Zone Internet Zone Thermostat Installation Guide Release 1 0 Part No 600 01100 100 Rev 1 ...

Страница 5: ...Supports HVAC system power with 24VAC Dual Stage Fuel Burner HVAC 2h 2c Single Stage Heat Pump HVAC with auxiliary heat 2h 1c IZT 250 Supports HVAC system power with 24VAC Two remote thermal sensors either Analog or Thermistor on the IZT 250 Dual Stage Fuel Burner HVAC 2h 2c Dual Stage Heat Pump HVAC with auxiliary heat 3h 2c Independent alarm notification on external sensors Installing the Thermo...

Страница 6: ... a stairwell door or window in a corner or alcove or behind an open door Install the unit after all construction work and painting is complete Install the unit in an unobstructed location where there are no objects on the wall above or below the thermostat or other obstructions such as furniture restricting vertical airflow It is not necessary for the thermostat to be level Tip If you are replacin...

Страница 7: ...l Installing and Wiring the Thermostat This section describes a two step installation process in which you install or mount the thermostat base plate and wire the thermostat Installing the Base Plate Perform the following steps to mount the thermostat base plate on the wall 1 Review the Installation Guidelines on page 2 and position the base plate in an appropriate location on the wall Ensure the ...

Страница 8: ... and the corresponding EWC label required to support the Single Stage and Dual Stage application Table 1 Fuel Burner Terminal Conversion Chart Standard Terminal EWC Terminal IZT 100 and IZT 250 R RH RH 24VAC source RC RC 24VAC source C C 24VAC commona a The 24VAC common must be in the same AC phase as the 24VAC source RH or RC If the thermostat is connected to RH only or RH and RC then C must be t...

Страница 9: ...ution when handling the wires and push any excess wire back into the wall 3 Using Figure 1 as a guide connect the labeled wires to the terminal post with the corresponding letter on the EWC base plate For example connect the wire labeled W1 to the W1 terminal post Loosen the terminal post screw used to secure the wires Insert the wire straight down into the square hole and secure the corresponding...

Страница 10: ...at Pump application Note You must know the type of Reversing Valve RV in your heat pump See the user manual for your heat pump for more information Table 2 Single Stage Heat Pump Terminal Conversion Chart Standard Terminal EWC Terminal IZT 100 and IZT 250 R RH RH 24VAC source RC RC 24VAC source C C 24VAC commona a The 24VAC common must be in the same AC phase as the 24VAC source RH or RC If the th...

Страница 11: ... HVAC system with a B type reversing valve connecting to an EWC base plate Figure 2 Single Stage Heat Pump HVAC Connections EWC Base Plate Square Hole Wire HVAC System Y1 RH Compressor Auxiliary Heat Fan Control Cool Heat Power Note A heat pump is either a reverse for heat B or reverse for cool O model The Ultra Zone IZT 100 uses Y2 for reverse cool and W2 is used for reverse heat W2 G Ca Reverse ...

Страница 12: ...ted to RH only or RH and RC then C must be the RH common If the thermostat is connected to RC only then C must be the RC common W W1 W1 Auxiliary heat relay Y Y1 Y1 Compressor relay stage 1b b Provides stage 1 heat or cool depending on the activation of the RV B O W2 RV activate for heat cool relayc c The RV is either activate for heat B terminal or activate for cool O terminal You can program thi...

Страница 13: ...ls com for a complete list of supported sensors Analog sensors convert temperature measurements as Fahrenheit degrees to a voltage which can be sensed by the thermostat Analog sensors are active devices which require power from the thermostat The Analog sensor is polarized and must be connected as shown in Table 4 Thermistor sensors are passive devices which represent thermal measurements as elect...

Страница 14: ...ctions EWC Terminal Analog Sensor Thermistor Sensora a Do not connect either lead to the S1 S2 or S terminal when using a Thermistor sensor Contact Closure Sensor S1 Do Not Use Do Not Use Do Not Use S1 COM Sensor 1 Either lead Contact Closure 1 Either lead S1 T20 Sensor 1 Either lead Contact Closure 1 Either lead S2 or S V for S1 and S2 sensors Do not use Do not use S2 COM Sensor 2 Either lead Con...

Страница 15: ...ured to turn on each HVAC system cool heat and fan Most applications use only RH power The Ultra Zone Internet Zone Thermostat is shipped from the factory with the RH Only configuration Table 6 lists the possible HVAC power configurations RC and RH are connected with J1 inserted Table 5 T568A and T568B Pinout Assignments Pin Number T568A Wire Color T568B Wire Color 1 Green White Orange White 2 Gre...

Страница 16: ...pports an Up POS1 or Down POS2 position The example in Figure 6 shows the J2 jumper in the Up position If necessary move the jumper downward to the POS2 position Figure 6 Thermostat Jumper Locations Prior to mounting the thermostat into the base plate verify that the jumpers on the thermostat are configured for your application see Table 6 To mount the thermostat into the base plate 1 Mount the th...

Страница 17: ...lect Heat 4 Press Select 5 Press Back 6 Continuously press the Up arrow until the heat set point is higher than the temperature reading The heat relay should click and the HVAC system should activate the heat Testing the Cool Controls 1 Press HVAC 2 Press Mode A menu list appears 3 Use the Up and Down arrows on the right side of the panel to select Cool 4 Press Select 5 Press Back 6 Continuously p...

Страница 18: ...uide to manage the thermostat remotely via the EWC Remote Management server You can access these guides at www ewccontrols com in the User Manuals area Table 8 Troubleshooting Tips Condition Possible Cause LCD display is blank Verify that the Common from the primary transformer source either RH or RC is connected to the C terminal Either RH or RC 24v source must be connected Verify the HVAC system...

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