Tekmar 518 User Manual
518_D
Thermostat 518
Installation & Operation Manual
Introduction
The Thermostat 518 accurately controls the
room temperature for a hydronic heating
zone using Pulse Width Modulation (PWM)
technology. Simple up and down buttons
and a display with large type make this
thermostat easy to read and use. The 518
automatically detects a single auxiliary
sensor to measure either outdoor, floor
or remote room temperature. This easy to
install thermostat is a direct replacement
for tekmar Thermostats 507 and 508.
03/13
Zoning
Replaces: New
Energy Saving Features
Auto Heating Cycle•
Additional Features
Radiant Floor Heating
•
Pulse Width Modulation
•
Auxiliary Sensor Input
•
Outdoor & Floor Temperature
•
Display
Backlight
•
Freeze Protection
•
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Table of Contents
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Getting Started ...............................2
Installation ...........................................2
Preparation .....................................2
Removing The Thermostat Base ....3
Mounting The Thermostat...............4
Thermostat Wiring ..........................5
Testing the Thermostat Wiring ........6
User Interface ......................................7
Home Screen ..................................7
Symbols Description .......................7
Sequence of Operation ........................8
Heating Operation ...........................8
Programmable Settings .......................9
Troubleshooting .................................10
Error Messages ............................10
Frequently Asked Questions ........11
Technical Data .............................. 11
Limited Warranty and Product
Return Procedure .........................12
Getting Started
Congratulations on the purchase of your new tekmar® thermostat.
This manual will step through the complete installation, programming and sequence
of operation for this control. At the back, there are tips for control and system
troubleshooting.
Installation
Caution
Improper installation and operation of this control could result in damage to the
equipment and possibly even personal injury or death. It is your responsibility to
ensure that this control is safely installed according to all applicable codes and standards.
This electronic control is not intended for use as a primary limit control. Other controls
that are intended and certified as safety limits must be placed into the control circuit.
Preparation
Tools Required
tekmar or jeweller screwdriver
•
Phillips head screwdriver
•
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Wire Stripper•
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Materials Required
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18 AWG LVT Solid Wire
•
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(Low Voltage Connections)
Installation Location
Choose the placement of the thermostats early in the construction process to enable
proper wiring during rough-in.
Consider the following:
Interior Wall.
•
Keep dry. Avoid potential leakage onto the control.
•
Relative Humidity less than 90%. Non-condensing environment.
•
No exposure to extreme temperatures beyond 32-122°F (0-50°C).
•
No draft, direct sun, or other cause for inaccurate temperature readings.
•
Away from equipment, appliances, or other sources of electrical interference.
•
Easy access for wiring, viewing, and adjusting the display screen.
•
Approximately 5 feet (1.5 m) off the finished floor.
•
The maximum length of wire is 500 feet (150 m).
•
Strip wire to 3/8” (10 mm) for all terminal connections.
•
Use standard 4 conductor, 18 AWG wire.
•
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Removing The Thermostat Base
To remove the thermostat base:
Locate the tab on the bottom of the
•
thermostat.
Push the tab with either your thumb or with
•
a screwdriver.
Lift the thermostat front away from the
•
thermostat’s base.
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Mounting The Thermostat
Stud
3 1/4”
(83 mm)
Gang
Box
Thermostat
Front
Adapter Plate 012
Thermostat
Base
If a single gang box is used:
Adapter Plate 012 is required (sold separately).
•
Feed the wiring through the hole in the adaptor plate and the thermostat base.
•
Fasten the adaptor plate to the gang box.
•
Fasten the base of the thermostat to the adaptor plate.
•
Terminate wiring to the wiring strip.
•
Push the thermostat front onto the thermostat base.
•
Thermostat
Thermostat
Front
Base
Wall
If mounting directly to the wall:
Drill holes and install the wall anchors.
•
Feed the wiring through the large hole in the thermostat base.
•
Fasten the thermostat base to the wall using the wood screws to the wall
•
anchors.
Terminate wiring to the wiring strip.
•
Push the thermostat front onto the thermostat base.
•
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