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Physical Installation and Wiring
Cautions!
We highly recommend that this installation procedure is performed by a trained HVAC
technician.
Read the enclosed instructions carefully before installing your new ZTS-500. Pay close
attention to all warnings and notes and carefully follow the installation steps in the order
they are presented to save time and minimize the risk of damaging the thermostat or the
system it controls.
Before disconnecting wires from the existing thermostat, label the wires with the terminal
markings from the old thermostat and record them. Take a picture of the old wiring as it will
be very helpful with troubleshooting in case you need to reinstall the old unit.
Turn off electronic devices (e.g. heater, cooler) which will be connected and the electric
source before installation and maintenance.
Do not use metal conduits or cables provided with a metal sheath.
Adding fuses or protective device in the line circuit is recommended.
Battery safety!
Use new batteries of the recommended type and size only.
Never mix used and new batteries together.
To avoid chemical leaks, remove batteries from the ZTS-500 if you do not intend to use the
unit for an extended period of time.
Dispose of used batteries properly; do not burn or bury them.
Read following scenarios carefully before you start as it matters to the battery life under Z-Wave
operation:
Installation Location
This thermostat is restricted to indoor use only. It should be mounted on an inner wall about 5ft
(1.5m) above the floor at a position where it is readily affected by changes of the general room
temperature with freely circulating air. Avoid mounting above or near hot surfaces or equipment
(e.g. TV, heater, refrigerator). Avoid mounting where it will be exposed to direct sunshine, drafts,
or in a laundry room or other enclosed space. Do not expose this unit to dripping or splashing
liquids.
Physically Installing the Thermostat
1. Open the ZTS-500 by pulling the two sections apart (Figure 2). Use the fingertips of one hand to
grip the tab on the front housing.
2. Insert the two included wall anchors into the wall, aligned with two of the mounting holes in
the back housing of the thermostat.
3. Open the terminal block of the ZTS-500 then insert all necessary wires through the back
housing (Figure 3).
4. Fasten the back housing to the wall using the two included mounting screws. Insert the screws
through the mounting holes in the housing and into the wall anchors (Figure 3).
5. Wire the proper cables to the terminal block according to the circuit diagram as described in
figure 4 and "Thermostat Terminal Wiring". Afterward, push all cables back into the wall then
close the terminal block of the ZTS-500.
6. The ZTS-500 can be powered by either two AA Alkaline batteries or four AA Alkaline batteries.
Match the polarity of the batteries with the +/- marks inside the battery compartment.
7. Align the front housing of the thermostat with the back housing and push until the housing
sections are locked together (Figure 5).
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