Robertshaw RS321N Non Programmable Setback Thermostat Installation Guide
Intruduction
The RS300N family of Non-Programmable Setback Thermostats represents the most advanced solid-state, microcomputer temperature control on the market today. The thermostat incorporates state-of-the-art technology packaged in an extremely low profile designer series case. They are a direct replacement for 300 series and DSL series non-programmable units. The Ultra-Touch push-buttons are combined with an easy-to-read, blue backlit full function liquid crystal display to provide the ultimate in user friendly operation of the heating and air conditioning, including gas, electric, oil and heat pump systems.
Standart Features
- No batteries required – always remembers setpoints
- Integrated electronic heat anticipation and cooling droop with built-in short cycle equipment protection
- Intelligent Fuzzy Logic staging for efficient operation of equipment, including auxiliary heat
- Tamper proof electronic keyboard lockout with programmable override ranges and time
- Automatic, Manual and Recirculation Fan operation
- Adjustable Fan Purge after Heating or Cooling Call
- Automatic Heat/Cool Changeover, Cooling Only, or Heating Only Mode Control
- Adjustable Deadband between Heat and Cool Setpoint in Auto Changeover
- Dual Heating and Cooling Setpoints for Day (Occupied) and Night (Unoccupied) operation
- Adjustable Min/Max Setpoints for Heating and Cooling
- Keypad Lockout with restricted +/-3°F(1°C) or +/-5°F(2°C) setpoint adjustment and 0min to 24Hr override timer with automatic return
- Selectable Fahrenheit or Celsius temperature display
- Adjustable Backlight Brightness
- Integrated Installer Setup Menu
- Up to 10 Remote Sensors can be added:
	- Surface Mount: 
		- 10-528 or RS300-528 (indoor) (up to 6)
- 10-529 or RS300-529 (outdoor)
 
- Single Gang Box Mount :
		- RS300-530 (Aux 1 – Aux 3)
- AVAILABLE PROBES FOR RS300-530
- RS300-531 (6” stainless steel w/box)
- RS300-532 (direct in-pipe water)
 
 
- Surface Mount: 
		
- Occupancy Sensor Inputs (use RS-OSC or RS-OSW)
- Two (2) Digital Inputs with LED Indicators
Thermostat Location

To ensure proper operation, the thermostat should be mounted on an inside wall in a frequently occupied area of the space. In addition, its position must be at least 18” (46 cm) from any outside wall, and approximately 5’, (1.5 m) above the floor in a location with freely circulating air of an average temperature.
Be sure to avoid the following locations:
- Behind doors or in corners where freely circulating air is unavailable
- Where direct sunlight or radiant heat from appliances might affect control operation
- On an outside wall
- Adjacent to, or in line with, conditioned air discharge grilles, stairwells or outside doors
- Where its operation may be affected by steam or water pipes or warm air stacks in an adjacent partition, or by any unheated / uncooled area behind the thermostat
- Where its operation may be affected by lighting dimmers next to it
- Where its operation will be affected by the supply air of an adjacent unit
- Near sources of electrical interference such as arcing relay contact
Removing The thermostat from The Backplate
- Insert a flat blade screwdriver or coin 1/8” into the slot located in the bottom center of the thermostat case and twist 1/4 turn. When you feel or hear a click, grasp the case from the bottom two corners and separate from the backplate as shown in the diagram at the left. Some models require more force than others when separating due to the number of terminals used.
- Swing the thermostat out from the bottom.
- Lift the thermostat up and off the backplate.
- Place the rectangular opening in the backplate over the equipment control wires protruding from the wall and, using the backplate as a template, mark the location of the two mounting holes NOTE: There are several versions of the RS300N thermostat. The wiring instructions for the equipment are identical.
- Use the supplied anchors and screws for mounting on drywall or plaster; drill two 3/16” (5mm) diameter holes at the marked locations; use a hammer to tap the nylon anchors in flush to the wall surface and fasten backplate using the supplied screws. (Do not over tighten!)
- Connect the wires from your system to the thermostat terminals as shown in the wiring diagrams. Carefully dress the wires so that any excess is pushed back into the wall cavity or junction box. Ensure that the wires are flush to the plasticbackplate. The access hole should be sealed or stuffed to prevent drafts from affecting the thermostat. 
	NOTE: This product must be supplied from a UL/CSA LISTED Class 2 power supply. Operation from other supplies may result in a potential fire risk. 
Readmore and Download Robertshaw RS321N Non Programmable Setback Thermostat Installation Guide
| Title | : Robertshaw RS321N Non Programmable Setback Thermostat Installation Guide | 
| Format | |
| Pages | : 2 Pages | 
| Language | : English | 
| File Size | : 1.5MB | 
