Tekmar 521 Programmable Thermostat Installation Manual de usuario descargar pdf (Pagina 21)

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A Watts Water Technologies Company

Setting Display

W2 RELAY

Select if a second stage heat is available.

Access Level: Installer Range: OFF or On

Conditions: Available when switch setting 2 is set

to 1H or 2H.

Default: OFF

W2 DELAY

Select the time delay that the second stage must

wait before turning on.

Access Level: Installer Range: 1 to 180 minutes

Conditions: Available when switch setting 2 is set to

1H or 2H and W2 Relay is set to On.

Default: 20 minutes

W2 DIFFERENTIAL

Select the differential below the Set Heat setpoint

at which the second stage heat can turn on.

Access Level: Installer, User Range: 1.5 to 8.0°F (1.5 to 8.0°C)

Conditions: Available when switch setting 2 is set to

1H or 2H and W2 Relay is set to On.

Default: 2.0°F

FAN MODE

Select how the fan should operate together with

the W1, W2 and Y relays.

Access Level: Installer, User

Range:

OFF, Y, W1, W1+Y

(Switch setting is H/C/F)

OFF, W1, W2, W1+2

(Switch setting is 1H or 2H)

Conditions:

When switch setting 2 is set to H/C/F, always

available.

When switch setting 2 is set to 1H or 2H, available

when a room sensor is available. If a floor sensor is

available then W2 must also be set to On.

Fan mode combinations with W1 are unavailable

when a floor sensor is connected.

Default:

Y (Switch setting 2 is H/C/F)

OFF (Switch setting 2 is 1H or 2H)

Setup Menu (2 of 2)

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Tekmar 521 Programmable Thermostat Installation Manual de usuario Pagina 21

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