Instruction/ maintenance manual of the product D Honeywell
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X-XX UL INST ALLA TION INSTRUCTIONS ®U.S. Registered Trademark Copyright © 1998 Honeywell Inc. • • All Rights Reserved T81 12C,D Electronic Programmable Thermostats APPLICA TION The T8112C,D thermostats provide electronic programmab le control for 24 to 30 V ac heating and cooling systems.
69-0917 — 2 2 T8112C ,D ELECTRONIC PROGRAMMABLE THERMOST A TS 1. Remov e mounting plate from the wall, and drill 3/16 inch holes in wall (if drywall) as marked. F or firmer material such as plaster or wood, dr ill 7/32 inch holes. Gently tap anchors (provided) into drilled holes until flush with the wall.
69-0917 — 2 3 T8112C,D ELECTR ONIC PROGRAMMABLE THERMOST A TS R Rc W Y G B D A C 2-WIRE HEAT-ONLY (JUMPER INTACT) M1709B L1 (HOT) L2 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 1 1 HEATING RELAY OR VALVE COIL JUMPER R Rc W Y G B D A C 5-WIRE HEAT/COOL (JUMPER REMOVED) L1 (HOT) L2 POWER SUPPLY.
69-0917 — 2 4 T8112C ,D ELECTRONIC PROGRAMMABLE THERMOST A TS M1712A JUMPER (FACTORY- INSTALLED) REMOVE IF 5-WIRE SYSTEM INSERT STRAIGHT UNDER SCREW HEAD 5/16 in. (8 mm) STRIP END OF WIRE VISIBLE HERE R R c WY G M3002A T8112C M5780 B. PRESS LOWER EDGE OF CASE TO LATCH.
69-0917 — 2 5 T8112C,D ELECTR ONIC PROGRAMMABLE THERMOST A TS As the batteries are running low , a “ bAt Lo ” indicator flash for one to two months bef ore batteries run out completely . Replace the batteries as soon as possible after the indicator star ts flashing.
69-0917 — 2 6 T8112C ,D ELECTRONIC PROGRAMMABLE THERMOST A TS CHECKOUT Heating Do not check heating system operation b y jumpering thermostat ter minals at the primar y control such as the gas valv e, zone v alve, or oil b urner control This will damage the thermostat.
69-0917 — 2 7 T8112C,D ELECTR ONIC PROGRAMMABLE THERMOST A TS TROUBLESHOOTING GUIDE NO TICE This equipment is a Class B digital apparatus, which complies with Canadian Radio Interf erence Regulations, CRC c.1374. If … Then … Display will not come on.
69-0917 — 2 8 T8112C ,D ELECTRONIC PROGRAMMABLE THERMOST A TS Home and Building Control Honeywell Limited-Honeywell Limitée 155 Gordon Baker Road North York, Ontario M2H 3N7 69-0917 — 2 G.H. Rev . 4-98 Printed in Mexico www .honeywell.com Home and Building Control Honeywell Inc.
An important point after buying a device Honeywell D (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell D 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 Honeywell D - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell D you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell D will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell D, 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 Honeywell D.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell D. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell D 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
