Touchscreen Thermostat Brochure

Hum

557

Radiant

Floor

Hum

557

Radiant

Floor

Y1 Y2 O W2G

557

Radiant

Floor

Sample Application Drawings

Heat Pump with Radiant Floor &

Electric Backup

The thermostat operates a radiant ﬂ oor and two-stage

air source heat pump. In warm weather, the thermostat

operates the heat pump to provide cooling. An outdoor

sensor can be used to lock out the air-source heat pump

to increase the operational efﬁ ciency of the system.

In mild weather, the radiant ﬂ oor can be disabled to

allow the heat pump to do the heating. In extreme

weather, the backup emergency electric resistance

provides heating.

Radiant Floor Heating, Second

Stage Fan Coil & Humidity Control

The thermostat operates two-stages of hydronic

heating and two-stages of cooling. A humidiﬁ er and

a dehumidiﬁ er operate to maintain humidity levels

based on a built-in or remote humidity sensor. An

outdoor sensor provides cooling lockout and warm

weather shut down.

Building Water-Loop Heat Pump with

Radiant Floor Heating

The thermostat operates a water-to-air heat pump to

provide heating and cooling as required. The zone valve

is activated to allow a water-loop to circulate through

the heat pump when in operation. Radiant ﬂ oor heating

is controlled through the thermostat to provide a more

comfortable space. Backup electric resistance is

available for emergency heat operation.

For more information on our product line,

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