tekmar 527 Installation

D527
tekmarNet®2 Thermostat 527
Installation & Operation Manual
Introduction
The tekmarNet®2 Thermostat 527 provides operation for:
One Stage Heat
12/11
Zoning
Replaces: 08/10
Features
Zone Synchronization
• Zone Post Purge
• Intelligent Setback (Timer 033)
• One touch overrides (User Switch)
• Auto Heating Cycle
• tN2 Communication compatible
• Room temperature limiting
• Requires 2 wires
• Pulse Width Modulation
• CSA C US Approved for use in USA
• and Canada
Outdoor Temperature Display
• Air Group Member
• Backlight
• Freeze Protection
• Equipment Exercising
• Supports Radiant Floor Cooling
Note
tN2 Zone Manager, Expansion
• Module, Wiring Center or House Control required for operation
D 527 - 12/11
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Table of Contents
Getting Started ..............................2
Installation .........................................2
Caution ..........................................2
Preparation ....................................2
Removing The Thermostat Base ...3
Mounting The Thermostat Base ....3
Thermostat Wiring .........................4
Testing the Thermostat Wiring ......5
Mounting the Thermostat ..............5
Cleaning the Thermostat ...............6
Switch Settings ..................................6
User Interface ....................................7
Display...........................................7
Button Operation ...........................7
Symbols Description .....................7
Settings ....................................8-12
Sequence of Operation .................... 13
Heating Operation ....................... 13
Air Group Operation .................... 14
Floor Cooling ...............................14
Schedules ...................................15
Scenes (System Override) .......... 15
Troubleshooting ...............................16
Error Messages ......................16-17
Frequently Asked Questions .......18
Job Record ..................................19
Technical Data .............................19
Limited Warranty and Product
Return Procedure ........................20
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 R e q u i r e d
tekmar or jeweller screwdriver
• Phillips head screwdriver
Materials Required
2, #6 x 1” Wood Screws
• 18 AWG LVT Solid Wire
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Wire Stripper
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Optional Adapter Plate 007 (for
• installation on 2” x 4” gang box)
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Installation Location
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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 max 80% up to 88°F (31°C) decreasing linearly to 50% RH
• at 104°F (40°C). 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 1000 feet (300 m).
• Strip wire to 3/8” (10 mm) for all terminal connections.
• Use standard 18 AWG wire for the tN2 connections.
Removing The Thermostat Base
To remove the thermostat base:
Place a small slot screwdriver or similar
• tool into the slot located on the top of the thermostat.
While pushing down against the plastic
• tab, pull the thermostat away from the thermostat’s base.
1
Push tab
Remove thermostat
2
from base
Mounting The Thermostat Base
If a single gang switch box is used, an Adaptor Plate 007 is required to mount the thermostat to the box.
Fasten the base of the thermostat to
• the adaptor plate.
Feed the wiring through the openings
• in the back of the adaptor plate and thermostat.
Use the upper and lower screw holes
• to fasten the adaptor plate to the box.
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Thermostat
Base
007 Adaptor
Plate
3
(83 mm)
Stud
1
/4
Mounted on switch box
Switch Box
If a switch box was not used, mount the
2
3
/8
(60 mm)
screwhole
thermostat directly to the wall.
Feed the wiring through the openings in
the back of the thermostat. Use screws in the screw holes to fasten the
Thermostat
Base
Stud
thermostat to the wall. At least one of the screws should enter a wall stud or similar rigid material.
3
2
/8
(60 mm)
screwhole
Wall
Mounted on wallboard
Thermostat Wiring
The thermostat operates a single heating system zone.
Power and communication are provided to the thermostat by connecting the tN2 terminals on the thermostat to the tN2 terminals on a tN2 Wiring Center, House Control, Zone Manager or Expansion Module. tN2 terminals are not polarity sensitive.
tN2 Manager, Module
or Wiring Center
For instructions see brochure Use at least 65°C conductors
tN21tN2
2
tN2 tN2
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tNt 527
One Stage Heat
ON
Switch Settings:
1023-01
Lock
Scene
Setback
Unlock
Off
Off
1234
12 34
527
Not used
Not used
Mmm YYYY
Lot # 12345
Meets Class B:
Canadian ICES
FCC Part 15
Testing the Thermostat Wiring
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Testi ng the P ower
If the thermostat display turns on, this indicates that the thermostat is operating correctly and there are no electrical issues. In the event that the display is off, or the display is cycling on and off:
1. Remove the tN2 wires from the thermostat.
2. Use an electrical meter to measure DC voltage between the tN2 terminals. If the DC voltage is 0 V (dc) for 20 seconds, then there is an open or short circuit
• in the tN2 wires.
If the DC voltage is 0 V (dc) for 10 seconds and then is 23 to 24 V (dc) for 5
• seconds, this indicates the wiring is correct.
3. Connect the thermostat to the tN2 wires connected to a zone on a House Control,
Wiring Center, or Zone Manager.
4. If the thermostat display is off, or is cycling on and off, move the thermostat to
the next available zone on the House Control, Wiring Center, or Zone Manager.
If the thermostat display remains permanently on, there may be a fault with the
• previously tried zone on the House Control, Wiring Center, or Zone Manager.
If the thermostat display continues to be off, or is cycling on and off, there may
• be a fault on the thermostat.
If a fault is suspected, contact your tekmar sales representative for assistance.
Testing the Heat Zone Output
1. Press the button and set the heating temperature below the current room
temperature. There should be no H1 symbol on the display.
2. Check that the House Control, Wiring Center, or Zone Manager zone is off.
2. Press the button and set the heating temperature above the current room
temperature. Make sure the display does not show “WWSD”.
3. When the H1 symbol appears on the display, use an electrical meter to check for
voltage on the House Control, Wiring Center, or Zone Manager relay. The voltage is 24 V (ac) for zone valves, and 120 V (ac) for zone pumps.
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Mounting the Thermostat
To place the thermostat back on the mounting base:
Place thermostat bottom tabs on
• matching mounting base notches.
Pivot top of the thermostat
• towards wall, ensuring wires clear obstructions.
The top clasp makes a clicking
• sound when properly closed.
Pivot Tab
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12 34
1234
Mmm
Meets Class B:
Switch Settings:
ON
Setback
Scene
Lock
Not used
Not used
Unlock
Off
Off
Cleaning the Thermostat
The thermostats’s exterior can be cleaned using a damp cloth. Moisten the cloth with water and wring out prior to wiping the control. Do not use solvents or cleaning solutions.
Switch Settings
527
ON
Switch Settings:
1023-01
Scene
Setback
Off
Off
1234
12 34
Lock
Unlock
Not used
Not used
Mmm YYYY
Lot # 12345
Meets Class B:
Canadian ICES
FCC Part 15
Switches are set to “On” position from the factory, and do not require changing for most applications.
For instructions see brochure Use at least 65°C conductors
tN21tN2
2
tNt 527
One Stage Heat
Made in Canada
Switch
1
2
3
4
Position
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Action
SETBACK
The thermostat follows a programmable setback schedule as a schedule member if available. Requires the installation of a Timer 033 to use this feature.
OFF
The thermostat does not follow a programmable setback schedule.
SCENE
The thermostat responds to changes in the scene (system wide manual overrides). Requires the installation of a User Switch 479 to use this feature.
OFF
The thermostat does not respond to scenes.
LOCK ACCESS LEVEL
Locked to ‘User’ access level. Set to Lock when installation completed.
UNLOCK ACCESS LEVEL
Unlock to allow ‘User’ and “Installer’ access level. Set to Unlock during installation process.
tekmarNet® reset control must also be set to Unlocked (Installer access level).
Not used
Not used
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