Data Sheet

VDRKA122 © Danfoss 12/10
2
Data sheet ETS
Controller For Snow Melting Systems
Technical Data:
ETS-3551 Snow/Ice Melting Controller
Mounting Interior wall surface
Dimensions 3.4” x 2.1” x 2.3” (L x W x D)
Supply voltage
24 Vac ±10%
Output relays 1 relay: 10-A, (potential free contacts)
On/Off diff erential 0.6°F (0.3°C)
Ambient temperature +32° to 122°F (0° to +50°C)
Temperature range +32°F to 41°F (0° to +5°C)
Detection mode
1) Moisture & temperature sensing
2) Temperature only
Scale Adjustment
Fine tuning of temperature setup ± 9°F (± 5°C)
ETOG-550, Ground Sensor
Detection Moisture
Mounting Flush to surface
Cable length 33ft (10m)
Ambient temperature -4 to 158°F (-20 to 70°C)
Dimensions
H: 1.25”, ± 2.4” (H: 32mm, ± 60mm)
ETSR5500, Gutter Sensor
Detection Moisture
Mounting
Gutter or downspout, used in
combination with ETF-744/99
Cable length 33ft (10m)
Ambient temperature -4° to 158°F (-20° to 70°C)
Dimensions 4.15” x 1.2” x 0.5” (105 x 30 x 13mm)
L x W x H
ETF-744/99, Outdoor Sensor
Detection Air temperature
Mounting Exterior wall
Ambient temperature -4° to 158°F (-20° to 70°C)
Dimensions
4.15” x 1.2” x 0.5” (105 x 30 x 13mm)
L x W x H