Install Instructions Control

ManualsBrandsArmstrong Pumps ManualsAstro Series PumpsAstro 220SSU075S-TA Stainless Steel Hot Water Recirculation Pump w/ Cord, Timer, Aquastat, 0-9 GPM Flow

6.0 Aquastat control accessory 2

7.0 Aquastat installation 3

8.0 Timer and aquastat installation 3

9.0 Timer programming with manual override switch 3

1.0 Timer application 1

2.0 Installation 1

3.0 Timer and aquastat application 1

4.0 24-Hour timer 2

5.0 Timer installation 2

1.0 timer application

The Armstrong 24-hour timers

provide On/O pump control ac-

cording to preset operating times

in order to increase comfort and

improve the overall eciency of

domestic hot water re-circulation

systems. The 24-hour timers are

designed for use with Armstrong

circulators installed in indoor hot

water re-circulation applications.

Typical timer applications will

cycle the pump at preset times, allowing the user to select op-

eration of the circulating pump during high peak usage periods

in order to decrease the delivery time to outlet ﬁxtures and

reduce wasted water.

The timer control is programmable to ¼ hour intervals within a

24-hour time frame utilizing a user friendly analog clock timer

with hour and minute hands, two directional arrows, and am/

pm time setting.

2.0 aquastat application

An optional aquastat is available for con-

stant circulation applications to maintain

temperature between 85°f and 105°f

(29°c and 41°c). The Armstrong aquastat

control accessory is designed for use

with Astro Series wet rotor circulators in

potable hot water re-circulation installations.

The aquastat control automatically turns the circulator on when

the temperature in the hot water line falls below approximately

85°f (on condition - for example when there is low demand on

the hot water supply). The control turns it o again when the

temperature exceeds 105°f (o condition - as in the case of

periods with high demand).

3.0 timer and aquastat application

The 24-hour timer and aquastat can also be used together

giving a comprehensive time and temperature actuated pump

control in a domestic hot water re-circulation system. Typical

application of the timer and aquastat combination will circulate

water only when both time and temperature on conditions

are initiated.

timer features

• Easy to install and program

• Time actuated 24-hour on/o pump control

• Hour and minute time setting with am/pm function

• Manual override switch modes

• Rugged construction - steel enclosure

• Clear plastic cover for dust and moisture protection of the

clock face

• Designed speciﬁcally for hot water re-circulation applications

• ul Listed

timer features

• Easy to install

• Temperature actuated pump control

• Environmentally sealed enclosure

• Surface sensing through snap acting bimetalic disc

• ul Listed

4.0 24-hour timer

technical data

Description 24-Hour Timer

Application Time actuated On/O pump control

Shortest Switching

Interval

¼ hour (15 minutes)

Manual Switch Modes “Timer”, “on” Override, “o” Override

File No: 11.871

Date: february 24, 2017

Supersedes: 11.871

Date: july 16, 2015

24-HOUR TIMER AND AQUASTAT CONTROL

ACCESSORY FOR ASTRO 2

INSTALLATION AND

OPERATING INSTRUCTIONS

Summary of content (4 pages)

PAGE 1
24 - H O U R TI M E R AN D AQ UA STAT CO NTRO L ACCE SSO RY FO R A STRO 2 | I N S TA L L AT I O N A N D File No: 11.871 Date: february 24, 2017 Supersedes: 11.871 Date: july 16, 2015 O P E R AT I N G I N S T R U C T I O N S 1.0 1 6.0 Aquastat control accessory 2 2 .0 Installation 1 7.0 Aquastat installation 3 3 .0 Timer and aquastat application 1 8 .0 Timer and aquastat installation 3 4 .0 24-Hour timer 2 9 .0 Timer programming with manual override switch 3 5 .
PAGE 2
i nstall a ti o n & o perat i ng i nstr uct i on s 24-hour Timer and Aquastat control accessory for Astro 2 2 Assembly - Exploded Layout technical data 1. 2. 3. 4. 5. 6. 5 .0 timer installation Note: Steps 1 & 3 apply to retrofit installations. 1 Disconnect the electrical supply to the circulator Note: Numerical component designations included in Steps 2 through 8 refer to circulator and timer components shown in fig. 1. 2 Unfasten the mounting 2 screws (4) and remove the terminal box cover (3).
PAGE 3
24-hour Timer and Aquastat control accessory for Astro 2 insta lla t io n & oper ating in struct io n s 3 7.0 aquastat installation timer 3 Connect the black, green and white lead wires according to the wiring diagram (fig. 4) Note: Lead Wiring Specification - Minimum, 6" (152 mm) long, 14 awg, rated minimum 140°f (60°c). Provided with r/c crimp connectors for attachment to the ground.
PAGE 4
i nstall a ti o n & o perat i ng i nstr uct i on s 24-hour Timer and Aquastat control accessory for Astro 2 4 timer progr amming 1. Set the current time by turning the programming ring clockwise until the timing arrow points to the current time of day. 2. Restore power to the circulator and set the manual switch on the timer dial to the "on" position ("i"). 3. Set the required "on/off" times by pushing the programming tabs to the outer position for "on" time intervals.