Application:
The Taco Clock Timer/Temperature Aquastat combination is
designed to cycle the circulator during peak demand peri-
ods. The Analog Timer (No. 265-1) is adjustable to 15 minute
intervals within a 24 hour time frame. The Digital Timer
(No. 265-3) can be programmed for 7 day operation. The
Temperature Aquastat (No. 563-2) automatically switches
the circulator ON at 95ºF and OFF at 115ºF. The two can
be used in combination, or they can be used separately.
When the Clock Timer/Temperature Aquastat are used
together, the Timer switches ON sending power to the unit.
The Temperature Aquastat measures the temperature, and
cycles the circulator as long as the Timer is switched to the
ON mode.
If used separately, the Clock Timer operates the circulator
during the chosen number of ON/OFF intervals. When using
only the Temperature Aquastat, the circulator cycles inter-
mittently to maintain a temperature between 95ºF and 115ºF.
The Clock Timer and Temperature Aquastat are easy to
retrofit to any “00” Series Circulator. The user-friendly 24
hour analog clock has an hour hand, raised minute hand
for ease of adjustment, two directional arrows, and AM/PM
time settings. Our easy to program digital timer provides
maximum convenience, comfort and energy savings. The
Clock Timer can be mounted in any direction by just
attaching it to the capacitor box electrical connection hole.
Installation: FOLLOW ALL INSTRUCTIONS IN THE
SEQUENCE THAT THEY APPEAR.
Analog Timer Installation Instructions:
1. Disconnect the electrical supply. Remove circulator
terminal box screw and cover.
2. Loosen Timer box cover screw and remove cover.
3. Assemble the back portion of the Timer to the “00” ter-
minal box as shown in the Timer installation diagram
(006 circulator pictured). Make sure that the protruding
tang on the back of the Timer box fits under the circu-
lator’s terminal box base. Adjust until the two terminal
box openings are aligned.
4. Secure the locknuts. Feed the yellow and white circu-
lator lead wires into the Timer through the bushing.
Reassemble circulator terminal box cover and secure
with the screw.
5. See electrical hook-up for Timer wiring.
Aquastat Installation Instructions:
1. Disconnect the electrical supply. Securely fasten the
Aquastat clip to 3⁄4" pipe or to the circulator casing for
1⁄2" pipe applications. The Aquastat must be properly
fastened to insure a good reading.
2. See electrical hook-up for Aquastat wiring.
Electrical Hook-Up:
1. All electrical work must be performed by an electrician
in accordance with the latest edition of the National
Electrical Codes and Local Codes and Regulations.
2. Verify that the voltage, phase and frequency are correct
for the Circulator, Timer and Aquastat prior to connection.
3. Follow the appropriate wiring diagram
Analog 24 Hour Timer Programming:
1. Set clock to the exact time of day by turning the outer
black ring clockwise to move the hour/minute hands to
the correct position. Pay special attention to the white
arrow pointing to the correct AM/PM time in the 24
hour outer ring.
2. Set the desired ON/OFF times by pushing the trippers
away from the clock face for ON operation. Leave the
trippers toward the clock face for OFF operation. Each
tripper represents a 15 minute interval.
3. Set switch in the middle position for
automatic operation.
Analog Timer Manual Switch Settings:
1. Up = On, Constant Circulation I
2. Middle = Automatic operation
3. Down = Off O
Instruction Sheet
Timer and Aquastat
102-067A
SUPERSEDES: May 1, 2010 EFFECTIVE: October 1, 2010
Plant ID# 001-3969
Analog Timer Clock Face
TIME
ARROW
MANUAL
SWITCH
IN AUTO
POSITION
PROGRAM
TRIPPERS
NOTE: To run Digital Timer in Manual ON (I) mode,
press the (R) Reset key first.
A Taco resource – saving product
