Instruction/ maintenance manual of the product 8476 Aprilaire
Go to page of 13
Model 84 76 Thermostat with Event-Based ™ Air Cleaning READ AND SAVE THESE INSTRUCTIONS Safety & Installation Instructions.
2 3 Installation location recommendations ................................................................ 3 Outdoor temperature sensor (optional) ................................................................ 4 Thermostat mounting .................
4 5 OUTDOOR TEMPERA TURE SENSOR (OPTIONAL) Outdoor temperature can be measured by attaching an 8052 sensor to the S1 and S2 terminals. System setting #05 (Remote sensor) is used to enable sensor .
6 7 WIRING TERMINAL Wire specifications 18-24 gauge thermostat wire Installation notes • Ensure power at the HVAC equipment is off. • Loosen screw terminals, insert stripped wire and re-tighten. • Push the excess wire back into the opening and plug the wall opening to prevent drafts.
8 9 INST ALLA TION WIRING – SINGLE TRANSFORMER (USE JUMPER WIRE) FOR HEA T PUMP SYSTEM 1st AUX HEA TING 1st COMPRESSOR FA N REVERSE VA LV E FA ULT DETECT 2nd AUX HEA TING 2nd COMPRESSOR OUTDOOR TEMP.
10 11 SETUP & TESTING SYSTEM SETUP INSTRUCTIONS (CONTINUED) The Model 8476 thermostat has the option of being used in heat pump or heat/cool systems. Switch SW1 located on the back of the thermostat’ s face is used to select this. System setting number 00 will only be shown on these models to display the position of SW1.
12 13 SETUP & TESTING System setting Setting range, default in bold 09 1st stage differential 1°F (0.5°C) 1°F to 4°F (0.5°C to 2°C) 10 2nd stage differential 1°F (0.5°C) 1°F to 4°F (0.5°C to 2°C) 11 3rd stage differential (heat pump only) 1°F (0.
14 15 SYSTEM TEST MODE The system test mode is used to test a system after installation. The outputs of the thermostat can be manually activated one at a time to test their function. The following instructions show how to enter the test mode and turn outputs on and off.
16 17 SETUP & TESTING T est steps for Heat / Cool Step Key Input System Setting Display (Output) #2 01 HEA TING ON (W) 02 HEA TING ON (W2) 01 COOLING ON (Y) 02 COOLING ON (Y2) 01 FAN ON (G) #50 He.
18 19 QUICK REFERENCE TO CONTROLS & DISPLA Y NOTE: BACKLIGHT IS ACTIVA TED WITH FIRST BUTTON PRESS AND AUTOMA TICALL Y TURNS OFF . Includes Event-Base d ™ Air Cleaning CURRENT INDOOR TEMPERA TUR.
20 21 TROUBLESHOOTING DISPLA Y IS BLANK • Check circuit breaker and reset if necessary . • Make sure power switch at heating & cooling system is on. • Make sure furnace door is closed securely . • If thermostat is battery powered, make sure fresh AA alkaline batteries are correctly installed.
22 23 SPECIFICA TIONS Electrical Operating voltage 24 VAC (18 – 30 VAC) Current Maximum: 2.5A (total), 1.0A (single output) Maximum surge current: 5A Power supply Dual power . Can be battery or 24 VAC powered. When both the sources are available, battery will be used as back up power .
24 P.O. Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357 www.aprilairepartners.com 61000893 12.11 B2205693A Patent Pending © 2011 Aprilaire – A division of Research.
An important point after buying a device Aprilaire 8476 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Aprilaire 8476 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Aprilaire 8476 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Aprilaire 8476 you will learn all the available features of the product, as well as information on its operation. The information that you get Aprilaire 8476 will certainly help you make a decision on the purchase.
If you already are a holder of Aprilaire 8476, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Aprilaire 8476.
However, one of the most important roles played by the user manual is to help in solving problems with Aprilaire 8476. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Aprilaire 8476 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
