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T8700B,C AN ELECTRONIC ROUND™ PROGRAMMABLE THERMOSTAT
68-0197—1
2
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for the complete ordering number.
1. Order number.
2. Accessory, if desired.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Logistics
Honeywell Inc., 1985 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
SPECIFICATIONS
IMPORTANT
The specifications given in this publication do not
include normal manufacturing tolerances; therefore,
an individual unit might not exactly match the listed
specifications. Also, this product is tested and
calibrated under closely controlled conditions and
some minor differences in performance can be
expected if those conditions are changed.
T8700 TRADELINE® models include a thermostat, wallplate,
decorator cover plate and owner’s guide. The package also
includes a resistor for use with Taco zone valves. See Fig. 11.
Power:
T8700: 24 Vac nominal, 18 to 30 Vac, 60 Hz.
Electrical Ratings:
Heating: .02 to 1.2A run; 3.5A inrush.
Cooling: .02 to 1.2A run; 6.0A inrush.
Fan: .02 to 0.5A run; 2.5A inrush.
Current Draw:
T8700 Power Stealing Thermostat requires only 2.5 mA
current draw when the thermostat calls for heat or cool and is
compatible with most 24V systems. It can be used in most
non-millivolt applications. See Power Stealing in the Operation
section.
Temperature Adjustment:
Setpoint temperature is adjusted by using the or keys.
One press changes the setpoint one degree; pressing and
holding changes the setpoint several degrees.
Temperature Setting Range:
40°F (4°C) to 99°F (37°C).
Operational Ambient Temperature Range:
30°F (4°C) to 110°F (43°C).
Shipping Temperature Range:
-20°F (29°C) to 120°F (49°C).
Operating Relative Humidity:
5% to 90% RH, noncondensing.
Cycle Rates (at 50 Percent Load):
Heating: Selectable at 1, 3, 6 or 9 cph. See Table 2 for
heating cycle rates and corresponding system equipment.
Cooling (T8700C): Fixed at 3 cph.
Table 2. Heating Cycle Rates.
Finish:
T8700: Premier White® color.
Dimensions:
See Fig. 1.
Fig. 1. T8700 Thermostat dimensions (T8700C shown).
System
Cycles per
Hour (cph)
Steam, Gravity 1
Hydronic Heat, Condensing Gas Furnaces 3
Gas or Oil Forced Air 6
Electric Furnace 9
Set
M12579
C
O
O
L
O
F
F
H
E
A
T
F
A
N
O
N
A
U
T
O
4-1/4
5-1/2
1-1/2
3-1/2
PM
T8700
THERMOSTAT
DECORATOR
COVER PLATE