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Model 8246 Installation and Operation Manual
Non-Programmable Heat Pump Thermostat
Failure to follow and read all instructions carefully before installing or operating this control could cause personal
injury and/or property damage. If you have any questions, please call Research Products Corporation at (800) 334-6011.
PREPARATIONS
Assemble tools required as shown below.
Wire cutter/stripper
Flat blade
screwdriver
Electric or cordless
drill with 3/16 inch
drill bit, if needed.
Level
THERMOSTAT DETAILS
FIGURE 1 – Thermostat Base
W904 Clip
for Celsius
instead of
Fahrenheit
Thermostat
Mounting hole
W905 Clip for
W906 for Emergency Heat
Slow Cycle
Second Stage Fan Control.
instead of
Clip for Fan Control by Equipment
Fast Cycle
instead of by Thermostat.
O/B
Terminal
Selection
Switch
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Table of Contents
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Summary of Contents for Aprilaire 8246
- Page 1 Thermostat Model 8246 Installation and Operation Manual Non-Programmable Heat Pump Thermostat Failure to follow and read all instructions carefully before installing or operating this control could cause personal injury and/or property damage. If you have any questions, please call Research Products Corporation at (800) 334-6011.
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Page 2: Mounting And Wiring
THERMOSTAT APPLICATIONS Description Description Heat Pump (No Aux or Emergency Heat) Standard Central Air Conditioning Heat Pump (with Aux or Emergency Heat) Gas or Oil Heat Standard Heat & Cooling Systems Electric Furnace Standard Heat Only Systems Hydronic (Hot Water) Zone Heat – 2 Wires Millivolt Heat Only Systems –... - Page 3 ATTACH THERMOSTAT BASE TO WALL 1. Remove the packing material from the thermostat. Gently pull the 6. Wire the thermostat. IMPORTANT! ENSURE THE POWER AT cover straight off the base. Forcing or prying on the thermostat will THE HVAC EQUIPMENT IS OFF. cause damage to the unit.
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Page 4: Check Thermostat Operation
CHECK THERMOSTAT OPERATION CAUTION NOTE: To prevent static discharge problems, touch side of thermostat to release static build-up before touching To prevent compressor and/or property damage, if the any keys. outdoor temperature is below 50°F, DO NOT operate the cooling system. If at any time during testing your system does not operate properly, contact a qualifi... -
Page 5: Cleaning The Thermostat
also wait 5 minutes minimum between cooling and heating cycles. This is intended to help protect the compressor from short cycling. FIGURE 5 – Thermostat buttons, display and switches Some newer compressors already have a time delay built in and do not require this feature. -
Page 6: Limited Warranty
WARRANTY REGISTRATION Please… Take a few minutes to visit us online at www.aprilaire.com to register your Aprilaire product. If you do not have online access, please mail a postcard with your name, address, phone number, product or model purchased, date of purchase and dealer name to: Research Products Corporation, P.O.
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