Summary of the content on the page No. 1
MENU
H
TA RGET
o
o
77
TEM P
F
HUM I D
23%
HEAT
Pow er Status Norm al $.05/kW h
HVAC
STATUS
NORMAL FAN
12:30pm
$0.05 KW
5/25 WED
SAVE
ENERGY
16
1
PG 1
LS-90 Installation Guide
Caution
• Your thermostat is a precise instrument, handle it with care.
• Turn off electricity to the HVAC system before installing or
servicing thermostat or any part of the system.
• Do not turn electricity back on until work is completed.
• Do not short (jumper) across electric terminals at the control
on the furn
Summary of the content on the page No. 2
2 PG 2 TOOLS You will need a small Phillips screwdriver and a drill with 3/16-in. (4.8mm) bit for wall mounts. LOCATION Replacement installations - mount the LS-90 in place of the thermostat. You must have a “C” wire or other 24VAC power available at the LS-90 location. A new location will require moving your wiring. New installations and for re-locating the LS-90 - follow the guidelines listed below: • Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the fl oor, and in a ro
Summary of the content on the page No. 3
G G 4 PG 4 What wires do you have? Make sure your wires are labeled. This may require you to nd the ‘other end’ connection for each wire on your heating or air conditioning equipment and read the label there. Refer to the Wire Reference page 13 for better understanding of wire labels from different HVAC system makers. IMPORTANT: C wire or 24VAC power is required for the LS-90 to operate. If you do not have a C wire you can run a new wire from the HVAC to the LS-90 or provide 24VAC power to
Summary of the content on the page No. 4
G 6 PG 6 Mount the LS-90 to wall Wall 1. Hold the LS-90 against the wall, with the wires coming over the top above terminal block. The LS-90 will cover the hole in the wall. 2. Position LS-90 for best appearance. Use the optional stand- offs if more LS-90 space for wires is needed behind the LS-90. 3. Attach the LS-90 to the wall with the screws provided. 4. If you are mounting the LS-90 to sheet rock or if you are using the old mounting holes, use the plastic anchors provided. 5. Mark � rs
Summary of the content on the page No. 5
MENU TA RGET o o 77 F TEM P HU MID 23% HEAT Power Status Norma l $.05/kWh HVAC STATUS NORMAL FAN 12:30pm $0.05 KWA 5/25 WED SAVE ENERGY 8 PG 8 SET-UP for NORMAL A/C cooling systems: 1. Press MENU and then touch HVAC SET-UP. 2. Touch and highlight COOL in the upper left corner of the display. 3. Select the number of stages of compression for your cooling system (1 or 2) by touching the number of STAGES and using +/- buttons to increase or decrease. 4. Touch to select the appropriate FAN CONT
Summary of the content on the page No. 6
MENU H TARGET o o 77 F TEMP HU MID 23% HEAT Power Status Normal $.05/kWh HVAC STATUS NORMAL FAN 12:30pm $0.05 KW 5/25 WED SAVE ENERGY 10 PG 10 Congratulations, you have successfully installed your unit. Please proceed to the OPERATING Guide to initialize the LS-90. IMPORTANT: After you have labeled and connected your wires, and followed the correct HVAC set-up, if these check procedures do not operate your system call support at 1-877-602-5028 8am-12am EST. LS-90 Features This thermost
Summary of the content on the page No. 7
12 PG 12 FOR EXTERNAL HUMIDIFIER Humidifi er - or DEHUMIDIFIER USING To use the internal humidistat to control an external HVAC SYSTEM's 24VAC humidifi er unit, connect it as shown. Connect the H 0 terminal to the control leg of the humidifi er relay. This RH H or DH allows H to turn the humidifi er ON and Off. FURNACE R De-Humidifi er - To HUMIDIFIER POWE R C or To use the internal humidistat to control an external 24VAC DEHUMIDIFIER De-humidifi er unit, connect it as shown. Connect the D
Summary of the content on the page No. 8
14 PG 14 Zoned Systems Reference Your Wires Radio Thermostat Terminal 2 wire Zoned Hot Water R RH W W 3 Wire Zoned Hot Water Motor Driven Valves R or 5 RH (power) W or 4 W (heat ON) Y or G or 6 (the 3rd wire) A (heat OFF) 3 Wire Zoned Hot Water Solenoid Valves R RH (power) W A (heat ON) Y or G (the 3rd wire) W (heat OFF) 15 Notes on your system Customer support: 877-602-5028 or www.radiothermostat.com PG 15
