tekmar 4 Thermostat 546 User guide

Brand: tekmar

Model: 4 Thermostat 546

Type: User guide

This manual is also suitable for

tekmar 4 Thermostat 546 is a versatile and powerful thermostat that can be used in a wide range of applications. With its two-stage heating and cooling capabilities, dual fan control, and three auxiliary sensor inputs, the 546 can be customized to meet the specific needs of your home or business. The 546 is also compatible with the tekmarNet 4 system, which allows you to remotely monitor and control your thermostat from anywhere in the world.

Here are some of the features and benefits of the tekmar 4 Thermostat 546:

Two-stage heating and cooling: The 546 can control two stages of heating and cooling, allowing you to fine-tune the temperature in your home or business.

Here are some of the features and benefits of the tekmar 4 Thermostat 546:

Two-stage heating and cooling: The 546 can control two stages of heating and cooling, allowing you to fine-tune the temperature in your home or business.

W 546

12/08

tekmarNet

4 Thermostat 546

- Wiring Brochure

Overview

Information

Brochure

Choose controls

to match

application

Application

Brochure

Design your

mechanical

applications

Layout

Brochure

Rough-in

wiring

instructions

Wiring

Brochure

Wiring and

installation of

specific control

Job

Record

Record settings &

wiring details for

future reference

Data

Brochure

Control settings

and sequence of

operation

The following brochure describes how to wire the tekmar tekmarNet

4 (tN4) thermostat 546. The 546 has outputs for: two

heat stages, two cooling stages and two fans. The 546 has inputs for three auxiliary sensors. The wiring of 546 thermostat

is simple and cost effective.

Table of Contents:

Definitions ....................................................................... 2

Rough-In Wiring .............................................................2

Remove the Wiring Cover ..............................................3

Mounting the Thermostat ...............................................3

Wiring Symbols ...............................................................3

Electrical Drawings ......................................................3-8

Wiring the Thermostat ...............................................9-10

Troubleshooting the Wiring ........................................... 11

Testing the Wiring .................................................... 11-12

Technical Data .............................................................. 12

tNt 546

Two Stage Heat, Two Stage Cool, Two Fan

Power: 24 V (ac) ±10% 60 Hz 1.5 VA

Relays: 24 V (ac) 2 A

Com

tN4

Rh1

Rh 2

Fan 1 Relay

Power Cooling

Cool 1 Relay

Cool 2 Relay

Sensor 3

Sensor Common

Sensor 2

Sensor 1

tekmarNet 4

Power Neutral

Power 24 V (ac)

Heat 1 Relay

Heat 2 Relay

Fan 2 Relay

DIP Switch Functions

992-01

Terminal Functions

Meets Class B: Canadian ICES, FCC Part 15

To isolate

relay, cut

jumper

No Power

Y2 Y1 Rc G1 G1

Rh1 Rh2

W2 G2 G2

tN4

Com

24 V (ac)

Power

tN4

Network

2nd Stage

Cooling

1st Stage

Cooling

1st Stage

Heating

2nd Stage

Heating

DIP

Switches

Auxiliary

Sensors

1st Stage

Fan

Wiring

Cover

2nd Stage

Fan / Ventilation

Deﬁ nitions

The following defined terms and symbols are used throughout this manual to bring attention to the presence of hazards of

various risk levels, or to important information concerning the life of the product.

– Caution: Refer to accompanying documents.

INSTALLATION

CATEGORY II

– Local level appliances.

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

uses as a primary limit control. Other controls that are

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.

RH 80% to 88°F (31°C), down to 50% from 104 to

122°F (40 to 50°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.

Rough-In Wiring

Sensor 3

Sensor 2

Sensor 1

Fan 2 or Ventilation

2nd Stage Cool

Fan 1

2 Cond. / 18 AWG

4 Cond. / 18 AWG

2nd Stage Heat

1st Stage Cool

Note: When multiple wires

run to the same equipment

location, wiring conductors

can share one wire jacket.

1st Stage Heat

24 V (ac) Power

tN4 Network

Zone Manager

or 2nd Stage

Equipment

•

Away from equipment, appliances, or other sources of

electrical interference.

•

Easy access for wiring, viewing, and adjusting the display

screen.

•

Approximately 5 ft. (1.5 m) off the finished floor.

Use standard 18 AWG wire for the thermostat power, stages

tN4 and sensor connections.

Refer to the diagram below to determine the number of

conductors to run from each piece of equipment to the

thermostat location.

intended and certified as safety limits must be placed into

the control circuit. Do not attempt to service the control.

Refer to qualified personnel for servicing. There are no

user serviceable parts. Attempting to do so voids warranty

and could result in damage to the equipment and possibly

even personal injury or death.

Mounting the Thermostat

If a single or double gang switch box is used, mount the

thermostat directly to the box.

•

Feed the wiring through the openings in the back of the

thermostat.

•

Use the upper and lower screw holes to fasten the

thermostat to the box.

Remove the Wiring Cover:

To remove the wiring cover:

•

Place a small slot screwdriver or similar tool into the slot

located on the right side of the thermostat.

•

While pushing against the plastic tab, lift off the wiring cover.

The electrical drawing examples on the following

pages show the 546 in common applications. Choose

the drawing that most accurately depicts the components

in your system and use that drawing as a guide to aid in

wiring your system.

These are only concept drawings, not engineered drawings.

They are not intended to describe a complete system nor

any particular system. It is up to the system designer to

Electrical Drawings

Wiring Symbols

Dry contact switch. Operates a device.

Do not apply power to these terminals.

Serious control damage will result.

Powered switch. 24 V (ac), switched

output to valve, pump relay etc.

tekmarNet

Factory jumper.

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 upper and lower screw holes to fasten

the thermostat to the wall. At least one of the screws

should enter a wall stud or similar rigid material.

determine the necessary components for and configuration

of the particular system being designed including additional

equipment isolation relays (for loads greater than the

controls specified output ratings) and any safety devices

which in the judgement of the designer are appropriate in

order to properly size, configure and design that system

and to ensure compliance with building and safety code

requirements.

Stud

Thermostat

Base

Terminal

Cover

/4”

(83 mm)

Switch Box

Stud

Wall

Thermostat

Base

Terminal

Cover

Electrical Application 546 E1

1413 15 16 17 18

54321

tNt 546

Two Stage Heat, Two Stage Cool, Two Fan

Power: 24 V (ac) ±10% 60 Hz 1.5 VA

Relays: 24 V (ac) 2 A

Com

tN4

Rh1

Rh 2

Fan 1 Relay

Power Cooling

Cool 1 Relay

Cool 2 Relay

Sensor 3

Sensor Common

Sensor 2

Sensor 1

tekmarNet 4

Power Neutral

Power 24 V (ac)

Heat 1 Relay

Heat 2 Relay

Fan 2 Relay

DIP Switch Functions

992-01

Terminal Functions

Meets Class B: Canadian ICES, FCC Part 15

To isolate

relay, cut

jumper

No Power

546 tNt

Slab Sensor

079

tN4 C R W tN4 C R W

Zone Manager 337

Zone A1 Zone B1

Factory installed jumper

connects R to Rh1

(terminals 12 to 13) To

isolate Rh1-W1 relay,

cut jumper

using same 24 V

power supply

Cooling Equipment

2 Stage Cooling

2 Stage Fan

G1 Y2

Outdoor Sensor

070

Duct Sensor

083

Com

tN4

Rh1

Rh2

Description:

Two Stage Heating (H1 = Radiant, H2 = Fin-tube Convector), Two Stage Cooling (C1 = Compressor 1st stage, C2 = Compressor

2nd stage), Two Speed Fan (F1 = Low-C1, F2 = High-C2), Fan Mode = 4.

Legend:

Sensor 1 = Floor

Sensor 2 = Outdoor

Sensor 3 = Duct

Electrical Application 546 E2

1413 15 16 17 18

54321

tNt 546

Two Stage Heat, Two Stage Cool, Two Fan

Power: 24 V (ac) ±10% 60 Hz 1.5 VA

Relays: 24 V (ac) 2 A

Com

tN4

Rh1

Rh 2

Fan 1 Relay

Power Cooling

Cool 1 Relay

Cool 2 Relay

Sensor 3

Sensor Common

Sensor 2

Sensor 1

tekmarNet 4

Power Neutral

Power 24 V (ac)

Heat 1 Relay

Heat 2 Relay

Fan 2 Relay

DIP Switch Functions

992-01

Terminal Functions

Meets Class B: Canadian ICES, FCC Part 15

To isolate

relay, cut

jumper

No Power

546 tNt

tN4 C R W

Ventilation

Equipment

tN4 C R W

Zone Managers

Factory installed jumper

connects R to Rh1

(terminals 12 to 13) To

isolate Rh1-W1 relay,

cut jumper

Cooling Equipment

Rc G1

Com

tN4

Rh1

Rh2

W2 G2

Slab Sensor

079

Universal Sensor

071

Rc Y1 G1 Y2

G2 G2

2 Stage Cooling

1 Stage Fan

Indoor Sensor

076

Description:

Two Stage Heating (H1 = Radiant, H2 = Fan Coil), Two Stage Cooling (C1 = Compressor 1st stage, C2 = Compressor 2nd

stage), One HVAC Fan (F1 = H2, C1 & C2), One Ventilation Fan (F2 = Fan or HRV), Fan Mode = 2.

Legend:

Sensor 1 = Room

Sensor 2 = Floor

Sensor 3 = Coil

Electrical Application 546 E3

1413 15 16 17 18

54321

tNt 546

Two Stage Heat, Two Stage Cool, Two Fan

Power: 24 V (ac) ±10% 60 Hz 1.5 VA

Relays: 24 V (ac) 2 A

Com

tN4

Rh1

Rh 2

Fan 1 Relay

Power Cooling

Cool 1 Relay

Cool 2 Relay

Sensor 3

Sensor Common

Sensor 2

Sensor 1

tekmarNet 4

Power Neutral

Power 24 V (ac)

Heat 1 Relay

Heat 2 Relay

Fan 2 Relay

DIP Switch Functions

992-01

Terminal Functions

Meets Class B: Canadian ICES, FCC Part 15

To isolate

relay, cut

jumper

No Power

546 tNt

tN4 C R W

Zone Manager

Factory installed jumper

connects R to Rh1

(terminals 12 to 13) To

isolate Rh1-W1 relay,

cut jumper

HVAC Equipment

G1 Y2

G2W

Com

tN4

Rh1

Rh2

Slab Sensor

079

1 Stage Heat

2 Stage Cooling

2 Stage Fan

Indoor Sensor

076

Universal Sensor

071

Description:

Two Stage Heating (H1 = Radiant, H2 = Furnace), Two Stage Cooling (C1 = Compressor 1st stage, C2 = Compressor 2nd

stage), Two Speed Fan (F1 = Low- H2, F2 = High-C1 & C2), Fan Mode = 3.

Legend:

Sensor 1 = Remote

Sensor 2 = Room

Sensor 3 = Floor

Electrical Application 546 E4

1413 15 16 17 18

54321

tNt 546

Two Stage Heat, Two Stage Cool, Two Fan

Power: 24 V (ac) ±10% 60 Hz 1.5 VA

Relays: 24 V (ac) 2 A

Com

tN4

Rh1

Rh 2

Fan 1 Relay

Power Cooling

Cool 1 Relay

Cool 2 Relay

Sensor 3

Sensor Common

Sensor 2

Sensor 1

tekmarNet 4

Power Neutral

Power 24 V (ac)

Heat 1 Relay

Heat 2 Relay

Fan 2 Relay

DIP Switch Functions

992-01

Terminal Functions

Meets Class B: Canadian ICES, FCC Part 15

To isolate

relay, cut

jumper

No Power

546 tNt

tN4 C R W

Ventilation

Equipment

tN4 C R W

Zone Managers

Factory installed jumper

connects R to Rh1

(terminals 12 to 13) To

isolate Rh1-W1 relay,

cut jumper

Cooling Equipment

Rc G1

Com

tN4

Rh1

Rh2

W2 G2

Universal Sensor

071

Rc Y1 G1 Y2

G2 G2

2 Stage Cooling

1 Stage Fan

Indoor Sensor

076

Outdoor Sensor

070

Description:

Two Stage Heating (H1 = Radiant, H2 = Fin-tube Convector), Two Stage Cooling (C1 = Compressor 1st stage, C2 = Compressor

2nd stage), One A/C Fan (F1 = C1 & C2), One Ventilation Fan (F2 = Fan or HRV), Fan Mode = 1.

Legend:

Sensor 1 = Remote

Sensor 2 = Outdoor

Sensor 3 = Room

Electrical Application 546 E5

1413 15 16 17 18

54321

tNt 546

Two Stage Heat, Two Stage Cool, Two Fan

Power: 24 V (ac) ±10% 60 Hz 1.5 VA

Relays: 24 V (ac) 2 A

Com

tN4

Rh1

Rh 2

Fan 1 Relay

Power Cooling

Cool 1 Relay

Cool 2 Relay

Sensor 3

Sensor Common

Sensor 2

Sensor 1

tekmarNet 4

Power Neutral

Power 24 V (ac)

Heat 1 Relay

Heat 2 Relay

Fan 2 Relay

DIP Switch Functions

992-01

Terminal Functions

Meets Class B: Canadian ICES, FCC Part 15

To isolate

relay, cut

jumper

No Power

546 tNt

Factory installed jumper

connects R to Rh1

(terminals 12 to 13) To

isolate Rh1-W1 relay,

cut jumper

External Class 2

Transformer

24 V (ac)

tN4 C

Other

tN4 Thermostat

or Zone Manager

HVAC Equipment

G1 Y2

G2W

R C

Outdoor Sensor

070

Duct Sensor

083

Indoor Sensor

076

Com

tN4

Rh1

Rh2

1 Stage Heat

2 Stage Cooling

2 Stage Fan

Description:

Two Stage Heating (H1 = Fin-tube Convector, H2 = Furnace), Two Stage Cooling (C1 = Compressor 1st stage, C2 = Compressor

2nd stage), Two Speed Fan (F1 = Low-H2 & C1, F2 = High-C2), Fan Mode = 5.

Legend:

Sensor 1 = Room

Sensor 2 = Outdoor

Sensor 3 = Duct

Wire the tN4 communication to terminals tN4 and C.

If a Zone Manager is used:

•

Connect the tN4 on the thermostat to the tN4 on the

proper zone of the Zone Manager used for the first stage

of heat. The C terminal is already connected.

If a Zone Manager is not used:

•

Connect the tN4 on the thermostat to the tN4 on another

tN4 device on the same tN4 bus.

•

Connect the C on the thermostat to the C terminal on

another tN4 device on the same tN4 bus.

tN4 Communication Terminals 10, 11

Wire the first stage of heating to the Heat 1 Relay.

(Rh1 - W1)

•

Use these terminals as a switch to operate the first stage

of heating.

If a Zone Manager is used:

•

Connect W1 on the thermostat to W on the proper

zone of the Zone Manager.

If a Zone Manager is not used:

•

Determine if the factory jumper must be cut.

•

When the factory jumper is not cut, W1 is a powered

output that is internally connected to R.

•

When the factory jumper is cut, Rh1 W1 is an isolated

switch. No power is available from these terminals.

Heat 1 Relay Terminals 13, 14

Wire the second stage of heating to the Heat 2 Relay.

(RH2 - W2)

•

Use these terminals as a switch to operate the second

stage of second.

If a Zone Manager is used:

•

Connect RH2 to R on the proper zone of the Zone

Manager. Connect W2 to W on the proper zone of the

Zone Manager.

If a Zone Manager is not used:

•

Rh2 - W2 is an isolated switch. No power is available

from these terminals.

Heat 2 Relay Terminals 15, 16

Wire 24 V (ac) to terminals C and R.

If a Zone Manager is used:

•

Connect C on the thermostat to C on the proper zone

of the Zone Manager.

•

Connect R on the thermostat to R on the proper zone

of the Zone Manager.

If a 24 V (ac) transformer is used:

•

Connect C on the thermostat to C on the transformer.

•

Connect R on the thermostat to R on the transformer.

Power (24 V (ac)) Terminals 11, 12

Zone Manager

Thermostat

Zone Manager

or Thermostat

Thermostat

Zone Manager

Thermostat

Factory installed jumper connects terminals R to Rh1

(To isolate Rh1-W1 relay, cut jumper)

2nd Zone Manager or

2nd Stage Equipment

Thermostat

Note: This connection is polarity sensitive.

Wiring the Thermostat:

tN4 C R W

tN4

tN4 C R W

Rh1 W1

13 14

tN4 C R W

Rh2 W2

15 16

tN4 C R W

Wire the second stage of cooling to the Cool 2 Relay.

(Rc - Y2)

•

Rc - Y2 is an isolated switch. No power is available from

these terminals.

•

Use these terminals as a switch to operate the second

stage of cooling.

Cool 2 Relay Terminals 3, 5

Thermostat

Fan 2 Relay Terminals 17, 18

Wire the second stage of fan or the ventilation to the Fan

2 Relay. (G2 - G2)

•

G2 - G2 is an isolated switch. No power is available from

these terminals.

•

Use these terminals as a switch to operate the second

stage of fan or the ventilation equipment. (shown)

•

If the fan is part of the cooling equipment, you may be able

to jumper power from Rc (3) to G2 (17). (Not Shown)

Wire the first stage of fan to the Fan 1 Relay. (G1 - G1)

•

G1 - G1 is an isolated switch. No power is available from

these terminals.

•

Use these terminals as a switch to operate the first stage

of fan.

•

If the fan is part of the cooling equipment, you may be able

to jumper power from Rc (3) to G1 (2). (Not Shown)

Fan 1 Relay Terminals 1, 2, 3

Thermostat

Wire the first stage of cooling to the Cool 1 Relay.

(Rc - Y1)

•

Rc - Y1 is an isolated switch. No power is available from

these terminals

•

Use these terminals as a switch to operate the first stage

of cooling.

Cool 1 Relay Terminals 3, 4

Thermostat

The auxiliary sensors are connected to the thermostat on

terminals Com, S1, S2 and S3.

•

• Connect sensor 1 to terminals S1 and Com.

•

• Connect sensor 2 to terminals S2 and Com.

•

• Connect sensor 3 to terminals S3 and Com).

Do not apply power

to terminals 6 - 9, permanent

damage to the sensors and / or thermostat will result!

Auxiliary Sensors Terminals 6 - 9

Do Not Apply Power

Thermostat

Slab

Sensor

Universal

Sensor

Outdoor

Sensor

To various tekmar

sensors

2nd Stage Fan

or Ventilation

543

Y2 Y1 Rc

543

Y2 Y1 Rc

321

Rc G1 G1

Rh1 W1 Rh2 W2 G2 G2

13 14 15 16 17 18

Com

1st Stage

Cooling

2nd Stage

Cooling

1st Stage

Fan

Troubleshooting the Wiring

The following tests are to be performed using standard

testing practices and procedures and should only be carried

out by properly trained and experienced persons.

A good quality electrical test meter, capable of reading

from at least 0 - 300 V (ac), 0 - 2,000,000 Ohms, and testing

for continuity is essential to properly test the wiring and

sensors.

General

Testing the Wiring

Testing 24 V (ac) Power Supply

1. Remove the front cover from the thermostat.

2. Use an electrical test meter to measure (ac) voltage between the R and C terminals. The reading should be 24 V (ac)

+/– 10%.

3. Install the front cover.

1. Remove the front cover from the thermostat.

2. Disconnect the wires from the relay that is to be

tested.

3. Place the thermostat into the test routine.

4. Use an electrical test meter and check for continuity

across the relay.

•

• When the relay’s symbol is displayed in the LCD,

there should be continuity.

•

• When the relay’s symbol is not displayed in the

LCD, there should be no continuity.

5. Reconnect the wires to the relay.

6. Repeat steps 2 to 5 for each relay that is to be tested.

7. Install the front cover on the thermostat.

Cool 2

Cool 1

Fan 1

Fan 2

546 LCD Display Segments

Heat 1 Heat 2

Testing the Relays

To test the sensors, the actual temperature at each sensor

location must be measured.

Use a good quality digital thermometer with a surface

temperature probe for ease of use and accuracy. Where

a digital thermometer is not available, place a spare

sensor alongside the one to be tested and compare

the readings.

Testing the Sensors

1. Remove the front cover from the thermostat.

2. Disconnect the wires from the sensor that is to be

tested.

Test the sensor’s resistance according to the instructions in

the sensor Data Brochure D 070, D 074, D 079 or D 083.

4. Reconnect the wires.

5. Install the front cover on the thermostat.

Com

tN4

Rh1 W1 Rh2 W2 G2 G2

13 14 15 16 17 18

54321

Y2 Y1 Rc G1 G1

###

For an explanation on the use of the ‘Test’ sequence or any error messages, refer to the Data Brochure.

tekmar Control Systems Ltd., Canada

tekmar Control Systems, Inc., U.S.A.

Head Office: 5100 Silver Star Road

Vernon, B.C. Canada V1B 3K4

(250) 545-7749 Fax. (250) 545-0650

Web Site: www.tekmarcontrols.com

tekmar Control Systems Ltd. and tekmar Control Systems, Inc.

12 of 12

All specifications are subject to change without notice.

Printed in Canada. W 546 - 12/08.

To test the tN4 Network, check the wires for continuity.

1. Remove the front cover from the thermostat.

2. Disconnect the two wires (tN4 and C) at one end and

connect them together.

Testing the tN4 Network

3. Go to the other end of the wires and disconnect them.

4. Using an electrical test meter, check for continuity.

5. Reconnect the wires.

6. Install the front cover on the thermostat.

Technical Data:

tekmarNet

4 Thermostat 546: Two Stage Heat, Two Stage Cool, Two Fan

Control Microprocessor PID control; This is not a safety (limit) control

Packaged weight 1 lb. (454 g)

Enclosure White PVC plastic

Dimensions 4-1/2” H x 4-3/4” W x 7/8” D (114 x 120 x 22 mm)

Approvals CSA C US, CSA/UL 61010-1, meets Class B: ICES and FCC Part 15

Ambient conditions Indoor use only, 32 to 122°F (0 to 50°C)

80% to 88°F (31°C), down to 50% from 104 to 122°F (40 to 50°C)

Altitude <6560 feet (2000 m), Installation Category II, Pollution Degree 2

Power supply 24 V (ac) ± 10% 60 Hz, 1.5 VA, NEC / CEC Class 2

W1 Relay 24 V (ac) 2 A

W2 Relay 24 V (ac) 2 A

Y1 Relay 24 V (ac) 2 A

Y2 Relay 24 V (ac) 2 A

G1 Relay 24 V (ac) 2 A

G2 Relay 24 V (ac) 2 A

Sensors: NTC thermistor, 10 k @ 77°F (25°C ± 0.2°C) ß = 3892

– Included None

– Optional tekmar type # 070, 071, 072, 073, 076, 077, 078, 079, 082, 083, 084

Technical Data

The installer must ensure that this control and its wiring are isolated and / or shielded from strong sources of electromag-

netic noise. Conversely, this Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements

of the Canadian Interference-Causing Equipment Regulations. However, if this control does cause harmful interference to

radio or television reception, which is determined by turning the control off and on, the user is encouraged to try to correct

the interference by re-orientating or relocating the receiving antenna, relocating the receiver with respect to this control,

and / or connecting the control to a different circuit from that to which the receiver is connected.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

tekmar 4 Thermostat 546 User guide

Brand: tekmar

Model: 4 Thermostat 546

Type: User guide

This manual is also suitable for

Here are some of the features and benefits of the tekmar 4 Thermostat 546:

Two-stage heating and cooling: The 546 can control two stages of heating and cooling, allowing you to fine-tune the temperature in your home or business.

Download PDF

report

tekmar 4 Thermostat 546 User guide

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tekmar 4 Thermostat 546 User guide

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