Submittal Sheet

Job __________________________
Designer ______________________
Contact _______________________
tekmarNet
®
Thermostat 552
552_C
09/14
Zoning Replaces: 07/11
Submittal
© 2014 552_C - 09/14
1 of 2
A Watts Water Technologies Company
Energy Saving Features
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Warm Weather Shut Down
Zone Synchronization
Zone Post Purge
Programmable Schedule
Away Scene Key
Auto Heating Cycle
Additional Features
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tekmarNet
®
Communication Compatible
Touchscreen
2 Auxiliary Sensor Inputs
Floor Warming (with 079 slab sensor)
Pulse Width Modulation
Outdoor Temperature Display
Optional Floor Temperature Display
Air Group Member
Backlight
Freeze Protection
Equipment Exercising
Room Temperature Limiting
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Specifications
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The tekmarNet
®
Thermostat 552 is a communicating touchscreen thermostat designed for hydronic heating systems. The extra
large touchscreen display allows you to easily adjust 7-day programmable schedules and room temperatures to optimize comfort
and energy savings. It operates a single zone of heating and has two auxiliary sensor inputs that can be assigned to measure room,
floor, or outdoor temperature. An optional floor sensor allows precise heating of radiant floors by controlling the floor temperature and
maintaining the desired room air temperature. Alternatively the room air temperature sensor can also be disabled to solely maintain
a minimum floor temperature. The 552 can be wired using 2 or 4 wires to connect to tekmarNet
®
zoning controls, or can be installed
as a stand-alone thermostat using 3 wires.
SPECIAL REQUIREMENTS
This thermostat is designed to be used with a tekmarNet
®
Wiring Center or Zone Manager for power and communication. It can also
be used in stand alone applications.
tekmarNet
®
Thermostat 552 One Stage Heat
Literature 552_C, 552_D, 552_Q, 552_U
Control Microprocessor control. This is not a safety (limit) control
Packaged weight 0.8 lb. (350 g)
Dimensions 5" H x 3-1/4" W x 15/16" D (127 x 82 x 23 mm)
Enclosure White ABS / PC plastic
Approvals
Meets Class B: ICES & FCC Part 15
Ambient conditions
Indoor use only, 32 to 122°F (0 to 50°C),
RH ≤90% non-condensing
Power supply
24 V ±10%, 50/60 Hz, 1.8 VA Standby, 56 VA fully loaded,
NEC / CEC Class 2
Relay 24 V (ac) 2 A
Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
–Included None
–Optional tekmar type # 070, 072, 073, 076, 077, 078, 079, 084
Warranty Limited 3 Year (See 552_D for full warranty)
Side ViewFront View
5"
(127 mm)
3-1/4"
(82 mm)
15/16"
(23 mm)
Mounting Base
W1
No Power
Rh S1 S2 Com
RtN4 C
552
tN2tN2
1-1/2"
(38 mm)
9/16"
(14 mm)
CL
1-7/8"
(47 mm)
3/4"
(19 mm)
CL
CL
13/16"
(20 mm)
4"
(102 mm)
2-1/2"
(64 mm)
29/32"
(23 mm)
3-1/4"
(83 mm)