Tekmar TekmarNet2 Thermostat 527 Installation & Operation Manual

tekmarNet®2 Thermostat 527

Installation & Operation Manual

D527

08/10

Zoning

Replaces:06/09

D 527 - 08/10

The tekmarNet®2 Thermostat 527 provides operation for:

One Stage Heat•

Introduction

Features

Outdoor temperature display Bright backlight 2 button temperature adjustment Communication with other

tekmarNet® devices improves system efficiency and comfort

Schedule member status enables setback operation

Optimum start Responds to tekmarNet® Scenes

Cooling Group Member Freeze protection Exercising Zone synchronization

•

Beneﬁ ts

Energy savings Reduced temperature swings Suitable for 2-wire retrofits

Compatible with tekmarNet® Timers, User Switches and Gateway for additional control

•

Note

tN2 Zone Manager, Expansion Module, Wiring Center or House Control required for operation

•

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.

Getting Started

Preparation

tekmar or jeweller screwdriver Phillips head screwdriver

•

Wire Stripper•

Tools Required

------------------------------------------------------

Materials Required

--------------------------------------------------

2, #6 x 1” Wood Screws 18 AWG LVT Solid Wire

•

Optional Adapter Plate 007 (for installation on 2” x 4” gang box)

•

Installation

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 ....................................8-11

Sequence of Operation ....................12

Heating Operation .......................12

Cooling Group Operation ............13

Schedules ...................................14

Scenes (System Override) .......... 14

Troubleshooting ............................... 15

Error Messages ......................15-17

Frequently Asked Questions .......18

Job Record ..................................19

Technical Data .............................19

Limited Warranty and Product

Return Procedure ........................20

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.

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 36-122°F (2-50°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.

•

Installation Location

-------------------------------------------------

Removing The Thermostat Base

Push tab

Remove thermostat from 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.

•

Mounting The Thermostat Base

Stud

Switch Box

Thermostat

Base

007 Adaptor

Plate

/4”

(83 mm)

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.

•

Mounted on switch box

If a switch box was not used, mount the 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 to the wall. At least one of the screws should enter a wall stud or similar rigid material.

•

Stud

/8”

(60 mm)

screwhole

/8”

(60 mm)

screwhole

Thermostat

Base

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.

12 34

tN2 Manager, Module

or Wiring Center

tN2 tN2

1234

tNt 527

527

One Stage Heat

Made in Canada

Mmm YYYY

Lot # 12345

Meets Class B:

Canadian ICES

FCC Part 15

1023-01

tN21tN2

Switch Settings:

For instructions see brochure Use at least 65°C conductors

Setback

Scene

None

Unlock

Lock

Cool Member 1

Oﬀ

Testing the Thermostat Wiring

Testing the Power

---------------------------------------------------

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.

•

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

Switch Settings

Switches are set to “On” position from the factory, and do not require changing for most applications.

12 34

1234

tNt 527

527

One Stage Heat

Made in Canada

Mmm YYYY

Lot # 12345

Meets Class B:

Canadian ICES

FCC Part 15

1023-01

tN21tN2

Switch Settings:

For instructions see brochure Use at least 65°C conductors

Setback

Scene

None

Unlock

Lock

Cool Member 1

Oﬀ

12 34

1234

Mmm

Meets Class B:

Switch Settings:

Setback

Scene

None

Unlock

Lock

Cool Member 1

Oﬀ

Switch

Position

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.

NONE

The thermostat is not part of a cooling group.

OFF

COOL MEMBER 1

The thermostat joins as a member to cooling group 1.

LOCK ACCESS LEVEL

Locked to ‘User’ access level. Set to Lock when installation completed.

OFF

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).

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.

Cleaning the Thermostat

+ 14 hidden pages

Tekmar TekmarNet2 Thermostat 527 Installation & Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual