for VAV heating and cooling systems
The room thermostat is designed for the following types of systems: VAV systems via On/Off or modulating control outputs:
The thermostat supports the following applications, which can be configured via DIP switches at the rear of the unit. The control output for the damper actuator is either DC 0…10 V (factory setting) or 3-position (see parameter P47), and for the auxiliary heating/cooling output On/Off, PWM, 3-position or DC 0…10 V.
| Product no. | Operating voltage | Number of control outputs | |||
| On/Off | PWM | 3-pos | DC 0…10 V | ||
| RDG400 | AC 24 V | 11) | 11) | 11) | 1 |
Equipment combinations
| Type of unit | Type reference | Data Sheet*) |
| Cable temperature sensor, cable length 2.5 m (8 feet) NTC (3 kn at 25 °C (77 °F)) | QAH11.1 | 1840 |
| Room temperature sensor NTC (3 kn at 25 °C (77 °F)) | QAA32 | 1747 |
| Cable temperature sensor, cable length 4 m (13 feet) NTC (3 kn at 25 °C (77 °F)) | QAP1030/UFH | 1854 |
| Condensation detector/supply unit | QXA2000/ QX2000 | 1542 |
| Electrical actuator, DC 0…10 V (for radiator valve) | SSA61.. | 4893 |
| Electrical actuator, DC 0…10 V (for 2 and 3 port valves/V..P45) | SSC61.. | 4895 |
| Electrical actuator, DC 0…10 V (for small valve 2.5 mm (0.1″)) | SSP61.. | 4864 |
| Electrical actuator, DC 0…10 V (for small valves 5.5 mm (0.2″)) | SSB61.. | 4891 |
| Electrical actuator, DC 0…10 V (for Combi-valve VPI45) | SSD61.. | 4861 |
| Electromotoric actuator, DC 0…10 V (for valves 5.5 mm (0.2″)) | SQS65.. | 4573 |
| DC 0…10 V damper actuator | GQD161.. | 4605 | |
| GDB161.. | 4634 | ||
| GLB161.. | |||
| GMA161.. | 4614 | ||
| GEB161.. | 4621 | ||
| GCA161.. | 4613 | ||
| GBB161.. | 4626 | ||
| GIB161.. | |||
| VAV compact controller | GDB181.1E/3 |
3544 | |
| GLB181.1E/3 | |||
| Electromotoric On/Off valve and actuator (only available in AP, UAE, SA and IN) | MVI../MXI.. | 4867 | |
| Electromotoric On/Off actuator | SFA71.. | 4863 | |
| Thermal actuator (for radiator valve) | STA71.. | 4877 | |
| Thermal actuator (for small valves 2.5 mm (0.1″)) | STP71.. | 4878 | |
| Electrical actuator, 3-position (for radiator valve) | SSA81.. | 4893 | |
| Electrical actuator, 3-position (for small valve 2.5 mm (0.1″)) | SSP81.. | 4864 | |
| Electrical actuator, 3-position (for small valve 5.5 mm (0.2″)) | SSB81.. | 4891 | |
| Electrical actuator, 3-position (for Combi-valve VPI45) | SSD81.. | 4861 | |
| Electromotoric actuator, 3-position (for valves 5.5 mm (0.2″)) | SQS85.. | 4573 | |
| Description | Product no. | Data Sheet*) |
| Changeover mounting kit (50 pcs/package) | ARG86.3 | 1840 |
| Adapter plate 120 x 120 mm for 4″ x 4″ conduit boxes | ARG70 | |
| The adapter plate 112 x 130 mm for surface wiring | ARG70.2 |
Ordering
The room thermostat consists of two parts:
The housing engages in the mounting plate and is secured with 2 screws.
Operation and settings
Display
| # | Symbol | Description | # | Symbol | Description |
| 1 | Heating mode | 10 | Confirmation of parameters | ||
| 2 | Heating mode auxiliary heater on (2nd stage) | 11 | Degrees Celsius Degrees Fahrenheit | ||
| 3 | Cooling mode | 12 | Digits for room temperature and setpoint | ||
| 4 | Comfort mode | 13 | Button lock active | ||
| 5 | Economy mode | 14 | Condensation in the room (dew point sensor active) | ||
| 6 | Protection | 15 | Fault | ||
| 7 | Escape | 16 | Temporary timer function (visible when the operating mode is temporarily extended due to prolonged presence or absence) | ||
| 8 | Digits for room temperature, setpoint, etc. | 17 | Indicates that room temperature is displayed |
Do not mount on a wall in niches or bookshelves, behind curtains, above or near heat sources, or exposed to direct solar radiation. Mount about 1.5 m (5 feet) above the floor.
Mounting: The room thermostat must be mounted in a clean, dry indoor place and must not be exposed to drip or splash water.
See Mounting Instructions (M3182) enclosed with the thermostat.
After the reset, which takes about 3 seconds, the thermostat is ready for commissioning by qualified HVAC staff. The control parameters of the thermostat can be adjusted to ensure the optimum performance of the entire system (see Basic Documentation P3182).
Temperature unit selection wizard
The temperature unit selection wizard enables to select the preferred temperature unit display on the thermostat between °C and °F.
Notes
Control sequence
Calibrate sensor
Setpoint and setpoint range limitation
Disposal: The device is considered an electronic device for disposal in terms of the European Directive 2012/19/EU and may not be disposed of as domestic garbage.
Power supply
Factory setting
Application: Single-duct
Application: Single-duct with electric heater, radiator or heating/cooling valve
© Siemens Switzerland Ltd, 2009 – 2017
Technical specifications and availability are subject to change without notice.
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