GE IS-ZW-TSTAT-300 Installation Manual

IS-ZW-TSTAT-300 Advanced Thermostat Installation Guide

Content

Contact information 1 Introduction 2 Location 3 Remove the old unit 3 Wiring 4 Mount the thermostat to the wall 6 HVAC selection 7 Install the batteries 8 To complete the installation 9 Testing the installation 10 Wiring diagrams 11 Wire reference chart 16 Specifications 17

Contact information

are under license to Interlogix, a UTC Fire & Security Company, 9 Farm Springs Road, Farmington, CT 06034-4065

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Introduction

The IS-ZW-TSTAT-300 programmable communicating thermostat operates via a high-quality, easy-to-use touch screen.

Figure 1: IS-ZW-TSTAT-300

Top cover

Reset button

HVAC switches

Wire terminals

Save Energy button

MODE button

Power gri d status indicator

FAN button

Menu button

Prog button

Bottom cover

Touch screen

WARNING: To avoid electrical shock and to prevent damage to the furnace, air

conditioner, and the thermostat, disconnect the power supply before beginning work. This can be done at the circuit breaker.

Caution: Your thermostat is a precise instrument, handle it with care:

• Turn off electricity to the HVAC system before installing or servicing the thermostat or any part of the system.

• Do not turn electricity back on until work is completed.

• Do not short (jumper) across electrical terminals at the control on the furnace or air conditioner to test the system. This may damage the thermostat.

• All wiring must conform to local codes and ordinances.

This thermostat is designed for use with three AA alkaline batteries and/or 24 VAC C wire (or a 12 to 24 AC or DC source) and millivolt gas systems. Each thermostat relay load should be limited to 1.0 A; higher amperage may cause damage to the thermostat.

2 IS-ZW-TSTAT-300 Advanced Thermostat Installation Guide

Tools

You will need a small Phillips screwdriver and a drill with a 3/16-in. (4.8 mm) bit for wall mounts.

Location

For replacement installations, mount the thermostat in place of the old thermostat. A new location will require moving your wiring.

For new installations and relocating the thermostat, follow these guidelines:

• Locate the thermostat on an inside wall, about 5 ft. (1.5 m) above the floor, and in a room that is used often.

• Do not install the thermostat where there are unusual heating conditions, such as: in direct sunlight; near a lamp, radio, television, radiator register, or fireplace; near water pipes in a wall; or near a stove on the other side of a wall.

• Do not locate in unusual cooling conditions, such as on a wall separating an unheated room; or in a draft from a stairwell, door, or window.

• Do not locate in a damp area. This can lead to corrosion that will shorten thermostat life.

• Do not locate where air circulation is poor, such as in a corner; in an alcove; or behind a door.

• Do not install the thermostat until all construction and painting has been completed.

• This thermostat does not require leveling.

Remove the old unit

Caution: Read the instructions carefully before removing any wiring from the

existing thermostat. Wires must be labeled before they are removed. There is no standard color code. When removing wires from their terminals, ignore the color of the wires and label them by the lettered terminal where they are screwed.

Switch off electricity to the heating and cooling systems, and then follow these instructions.

1. Remove the cover from the old thermostat. Most are snap-on types and simply pull off. Some have locking screws on the side or front. These must be loosened. Do not remove wires. Note the letters printed near the terminals. Attach labels (enclosed) to each wire for identification.

2. Label wires one at a time. You must label all the wires before you proceed.

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3. With all wires labeled, remove them from the old unit. Make sure the wires do not fall back inside the wall. You can wind them around a pencil to keep them from falling.

4. Loosen all screws on the old thermostat and remove it from the wall.

Figure 2: Labeling wires

Wiring

Make sure your wires are labeled. This may require you to find the other end connection for each wire on your heating or air conditioning equipment and read the label there. See “Wire reference chart” on page 16 for more information on wire labels from different HVAC system makers.

Note: The thermostat runs on three AA alkaline batteries and/or the C wire if

available. If you do not have a C wire, you can run a new wire from the HVAC or use a standard 12 to 24 VAC or VDC wall transformer. An external power source is required when using a radio module.

Note: If you have both RH and RC you need to remove the jumper wire between

these two terminals (see Figure 3 on page 5).

Prepare the wires

Follow these guidelines for safe and secure wire connections:

• You will need at least 2.6 in. of wire for each connection to the thermostat. If you do not have enough wire, splice additional wire to allow enough slack.

• Terminals accept 16 to 22 AWG wire.

• Fan out wires below the mounting hole (see

Figure 3 on page 5).

• Remove insulation 1/8 in. from the tip of each wire (see Figure 3 on page 5).

• When handling, take care not to damage the labels for each wire.

4 IS-ZW-TSTAT-300 Advanced Thermostat Installation Guide

Figure 3: Preparing the wires

From HVAC System

Jumper wire

2.6 in.

Wire terminals

Identify your wiring diagram

Select the reference page with your wiring diagram and set-up information.

• “Two-wire heat, gas millivolt or 24 VAC system (C, W, RH):” on page 11

• “Three-wire heat (C, W, RH, G):” on page 12

• “Four-wire heat/cool (C, W, Y, RH, G)” on page 12

• “Five-wire heat/cool (C, W, Y, RH, RC, G)” on page 13

• “Four-wire heat pump without AUX heat (C, B or O, Y, RH, G):” on page 13

• “Five-wire heat pump with AUX heat (C, B or O, W2, Y, RH, G):” on page 14

• “Two-stage heat and two-stage cool (C, W2, W, Y, Y2, RH, G):” on page 15

• “Three-wire zoned hot water (W, RH, [A]):” on page 15 The C wire is optional, but preferred for all installation (shown as a dotted line in

the wiring diagrams listed above). Some radio modules will require the 24 VAC C wire power.

If your combination of wires is not listed, you can use the “Wire reference chart” on page 16 to determine your connections, contact customer support for help.

Fan out wires with the thermostat below the wall opening so that the C wire is above the C terminal, the W wire above the W terminal, etc. This allows the thermostat to fit snug to the wall. Wires will position behind the thermostat and up over the terminal area. Do not bunch wires behind the thermostat. Feed any slack back into the wall opening.

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Figure 4: Thermostat terminals

From HVA

Caution: Do not allow wires to touch each other or parts of the thermostat.

Connect your wires

Connect the labeled wires only to a terminal with the same letter label. Insert the wire in the terminal well and tighten the screw securely.

Note: If you prefer, you can mount the thermostat to the wall first, and then

connect the wires. The thermostat can be externally powered with a power source rated 12 V to 24

V AC or DC, at 300 ma or greater. If used, connect to the C and RH terminals (no polarity).

Mount the thermostat to the wall

1. Hold the thermostat against the wall, with the wires coming over the top above the terminal block. The thermostat will cover the hole in the wall. Position the thermostat for best appearance.

2. Mark first and drill a 3/16 in. (4.8 mm) hole for the insert at each screw location, then mount the unit.

3. Attach the thermostat to the wall with the screws provided. If you are mounting the thermostat to sheet rock or if you are using the old mounting holes, use the plastic anchors provided.

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