Watts 538 Quick Set-up

1

A Watts Water Technologies Company

1. Location

2. Remove Mounting Base

3. Install Mounting Base

Thermostat

Base

Adaptor

Plate 007

Switch

Box

OR

Thermostat

Base

Wall

Exterior

Wall

Interior

Wall

5 feet

1.5 m

tekmarNet

®

4 Thermostat 538

Quick Setup Guide

538

_

Q

02/14

Zoning

Replaces: 12/13

Behind

Door

2

A Watts Water Technologies Company

4. Wiring

5. Switch Settings

Switch

Position

Action

1

ON

SETBACK Allow thermostat to respond to

available schedule. Requires Timer 033.

OFF OFF No setback schedule response.

2

ON

SCENE Allow thermostat to respond to

scenes. Requires User Switch 479.

OFF OFF No scene response.

3

ON

LOCK Locked to ‘User’ access level. Set to

Lock when installation completed.

OFF

UNLOCK Unlock to access all settings. Set

to Unlock during installation.

4

ON Not used

OFF Not used

12 34

tN4 Wiring Center

or

tN4 Zone Manager

Slab Sensor 072, 073, 079

OR

Outdoor Sensor 070

OR

Indoor Sensor 076, 077, 084

tN4 C W

R

1234

tNt 538

538

One Stage Heat

Mmm YYYY

Lot # 12345

Meets Class B:

Canadian ICES

FCC Part 15

Power: 24 V ±10% 50/60 Hz 1.8 VA

56 VA fully loaded

Relay: 24 V (ac) 2 A

1001-03

tN4

1

C

2

R

3

W

4

65

Sensor

Switch Settings:

For instructions see brochure

Use at least 75°C conductors

Setback

Scene

Lock

Not used

ON

Not used

Unlock

Oﬀ

No Power

Switch Setting Location

3

A Watts Water Technologies Company

6. Close Thermostat

pivot

tab

8. Critical Settings

The following settings are essential to the successful operation of the system.

Important

Note: Set switch setting #3 and tekmarNet

®

system control to Unlock to change

Access level to Installer. Return to Lock setting once installation has been completed.

• Press and hold down both the and buttons for 2

seconds to change from one step to the next.

• Release both buttons once the step has been reached.

• Press the or the button to change the setting, if

available.

• Press and hold down both the and buttons for 2

seconds to go to the next step, OR

• After 10 seconds of no button activity, the display goes

back to normal operation.

Press

+

Together

7. User Interface

All specifications are subject

to change without notice

4 538_Q - 02/14.

A Watts Water Technologies Company. Head Ofﬁ ce: 5100 Silver Star Road, Vernon, B.C.

Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650

Web Site

: www.tekmarControls.com

For a full list of settings and operational details, please refer to the thermostat

Installation and Operation Manual (538_D) included with compatible

tekmarNet

®

controls or download the brochure from www.tekmarcontrols.com

8. Critical Settings (Continued)

Display Range Access Description

°F or °C

Default =

°F

Installer

User

TEMPERATURE UNITS

Press the or the button to

change from °F to °C and vice

versa.

Set To:

H1

ADJUST

SUPPLY

OFF or On

Default =

On

Installer

HEAT SUPPLY PUMP

During heating, select whether or

not the system supply pump should

turn on or be off to allow a zone

group pump per manifold.

Available when:

• A reset control is present on

the tekmarNet

®

system.

Set To:

H1

ADJUST

SUPPLY

OFF or On

Default =

OFF

Installer

HEAT SUPPLY PUMP DELAY

During heating, select whether or

not the system supply pump should

be delayed by 3 minutes before

coming on (for thermal motor or

wax actuator).

Available when:

• A reset control is present on

the tekmarNet

®

system.

Set To:

On or Off

Default =

On

Installer

ROOM SENSOR

Select whether the built-in air

temperature sensor is on or off.

Available when:

A floor sensor or room sensor is

installed on the auxiliary sensor

input.

Set To:

Off,

Room,

Outdoor,

Floor,

Floor dSP

Installer

AUXILIARY SENSOR

Select the type of auxiliary sensor.

Floor dSP = Show floor sensor

reading in upper number field.

Available when:

Auxiliary sensor automatically

detected.

Set To:

5

Une Entreprise de Watts Water Technologies

1. Emplacement

2. Retirez la base de montage

3. Installez la base de montage

Mur extérieur

Mur intérieur

5 pi.

1,5 m

Commutateur

boîte

OU

Mur

Plaque

adaptrice 007

Base de

thermostat

Base de

thermostat

tekmarNet

®

4 Thermostat 538

Guide d'installation rapide

538

_

Q

02/14

Zonage

Remplace: 12/13

Derrière

porte

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