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© 

2008     W 

543 

12/08 

of 

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.

–  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).

Rough-In Wiring

Sensor 2

Sensor 1

2 Cond. / 18 AWG

2 Cond. / 18 AWG

2 Cond. / 18 AWG

4 Cond. / 18 AWG

2nd Stage Heat

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

Zone Manager
or 2nd Stage
Equipment

• 

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 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.

Summary of Contents for tekmarNet 4 543

Page 1: ...iary sensors The wiring of 543 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...

Page 2: ...to 50 C Non condensing environment No exposure to extreme temperatures beyond 32 122 F 0 50 C Rough In Wiring Sensor 2 Sensor 1 2 Cond 18 AWG 2 Cond 18 AWG 2 Cond 18 AWG 4 Cond 18 AWG 2nd Stage Heat...

Page 3: ...the system designer to Electrical Drawings OR Wiring Symbols Dry contact switch Operates a device Do not apply power to these terminals Serious control damage will result Powered switch 24V ac switche...

Page 4: ...ensor Common tekmarNet 4 Power Neutral Power 24 V ac Heat 1 Relay Heat 1 Relay Heat 2 Relay Heat 2 Relay DIP Switch Functions 994 01 Meets Class B Canadian ICES FCC Part 15 No Power To isolate relay c...

Page 5: ...1 Sensor Common tekmarNet 4 Power Neutral Power 24 V ac Heat 1 Relay Heat 1 Relay Heat 2 Relay Heat 2 Relay DIP Switch Functions 994 01 Meets Class B Canadian ICES FCC Part 15 No Power To isolate rel...

Page 6: ...erminals Heat 1 Relay Terminals 7 8 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...

Page 7: ...he relay that is to be tested 3 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 symbo...

Page 8: ...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...

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