Tekmar 521 Installation & Operation Manual page 21

Setup Menu (2 of 2)
Setting
W2 RELAY
Select if a second stage heat is available.
Access Level: Installer
Conditions: Available when switch setting 2 is set
to 1H or 2H.
W2 DELAY
Select the time delay that the second stage must
wait before turning on.
Access Level: Installer
Conditions: Available when switch setting 2 is set to
1H or 2H and W2 Relay is set to On.
W2 DIFFERENTIAL
Select the differential below the Set Heat setpoint
at which the second stage heat can turn on.
Access Level: Installer, User
Conditions: Available when switch setting 2 is set to
1H or 2H and W2 Relay is set to On.
FAN MODE
Select how the fan should operate together with
the W1, W2 and Y relays.
Access Level: Installer, User
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.
A Watts Water Technologies Company
Display
Range: OFF or On
Default: OFF
Range: 1 to 180 minutes
Default: 20 minutes
Range: 1.5 to 8.0°F (1.5 to 8.0°C)
Default: 2.0°F
Range:
OFF, Y, W1, W1+Y
(Switch setting is H/C/F)
OFF, W1, W2, W1+2
(Switch setting is 1H or 2H)
Default:
Y (Switch setting 2 is H/C/F)
OFF (Switch setting 2 is 1H or 2H)
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