Taco 265 Instruction Sheet

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 Timer Programming:

1. Set the clock to the exact time of day using the clock

face minute hand. Pay special attention to the corre-

sponding AM and PM settings.

2. Supply power. Test circulator by pushing Timer lever into

the manual position.

3. Set the desired ON/OFF times in 15 minute intervals.

Push trippers away from clock face for ON operation, and

leave trippers toward the clock face for OFF operation.

Programming Modes:

1. Up = On, Constant

circulation    I

2. Middle = Automatic

operation

3. Down = Off    O

Instruction Sheet

Timer and Aquastat

102-067

SUPERSEDES: November 15, 1992 

EFFECTIVE: May 1, 2003

Plant ID# 001-979

Analog Timer Clock Face