Armstrong ASTRO 220SSU075S-TA, ASTRO 225BS050S-TA, ASTRO 220SSU050S-TA, ASTRO 225BS075S-TA, ASTRO 225SSU-TA Installation And Operating Instructions Manual
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ASTRO 2 SERIES HOT WATER RE-CIRCULATION
SYSTEM
INSTALLATION AND OPERATING INSTRUCTIONS
|
File No: 10.812
Date: july 23, 2015
Supersedes: 10.812
Date: july 09, 2015
1.0 Typical application 1
2.0 How it works 1
3.0 Technical data 1
4.0 Installation 2
1.0 typical applications
Armstrong Astro 2 Hot water
re-circulation systems automatically circulate water
through domestic hot water
distribution pipes. This helps
to ensure that everyone in the
household has “instant” hot water at the tap when they need it,
while also helping to conserve
water and save water heating
energy costs. All systems are
assembled, wired, tested, and
then shipped from the factory,
ready for installation.
2.0 how it works
5.0 Operation 4
6.0 Setting the clock/timer 5
7.0 Replacement parts 5
3.0 technical data
technical data
Power Connection
Environment Indoor use only
Max. working pressure 150 psi (1034 kPa)
Ambient temperature 39°f (4°c) to 104°f (40°c)
Max. water temperature 230°f (110°c)
Low temperature switchpoint
High temperature switchpoint
Clock/timer
Timer settings
Manual override 3 position slide switch; on/auto/o
6.0 ft (1.8 m) power cord, molded
duplex plug with ground
1
85°f (29°c) ±10%
1
105°f (40°c) ±10%
12-hour analog clock with am/pm
indication
Individual mechanical toggles
for each 15 minute interval over
24 hours
In normal operation, the Astro 2 automatically starts recirculating water throughout the hot water distribution system
whenever the timer enables activation. The timer can be set for
one or more activation periods per day. An activation period
consists of a multiple (up to 96) of 15 minute time intervals. The
timer includes manual on and o overrides to normal
automatic operation.
Some models are equipped with an Aquastat, intended for
use on metallic piping. The Aquastat enables operation only
when the sensed water temperature is below 85°f (25°c). Once
activated, the circulator operates until either the water temperature reaches 105°f (41°c), or the current timed activation
period ends.
1
High/low temperature switch points are as measured on pipe surface
with the Aquastat (-ta mode ls only).
materials of construction (wetted parts)
Pump casing Lead free bronze* or Stainless steel*
Pump shaft Ceramic
Impeller Noryl
Bearings Ceramic
Bearing seal epdm
*Certified to nsf-372 Complies with section 116875 of the California Health
and Safety Code and Vermont Act 193 (Lead content of wetted surface is
0.25% or less.)
installation &
operating instructions
Astro 2 series
Hot water re-circulation system
2
item model connection size cord timer aquastat electrical data weight
110223b -140
110223b -141
110223b -142
110223b-143 astro 225bs075s-ta Sweat ¾"
110223b-144 astro 220ssu-ta npsm union 1¼"
110223b-145 astro 225ssu-ta npsm union 1¼"
110223b-148 astro 2 3 0ss-ta 2 bolt flange 2 bolt flange
110223b-149 astro 250ss-ta 2 bolt flange 2 bolt flange
110223b-240 astro 220ssu050s-t* Sweat ½"
110223b-241 astro 220ssu075s-t* Sweat ¾"
110223b-242 astro 225bs050s-t Sweat ½"
110223b-243 astro 225bs075s-t Sweat ¾"
110223b-244 astro 220ssu-t npsm union 1¼"
110223b-245 astro 225ssu-t npsm union 1¼"
110223b-248 astro 2 30ss-t 2 bolt flange 2 bolt flange
110223b-249 astro 250ss-t 2 bolt flange 2 bolt flange
110223-340 astro 220ssu050s-lc* Sweat ½"
110223-341 astro 220ssu075s-lc* Sweat ¾"
110223-342 astro 225bs050s-lc Sweat ½"
110223-343 astro 225bs075s-lc Sweat ¾"
110223-344 astro 220ssu-lc npsm union 1¼"
110223-345 astro 225ssu-lc npsm union 1¼"
110223-348 astro 230ss-lc 2 bolt flange 2 bolt flange
110223-349 astro 250ss-lc 2 bolt flange 2 bolt flange
astro 220ssu050s-ta*
astro 220ssu075s-ta*
astro 225bs050s-ta
Sweat ½"
Sweat ¾"
Sweat ½"
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— — 115 Vac , 60 Hz, 0.29 A, 33W 7.0 0 (3.18)
ü
— — 115 Vac , 60 Hz, 0.29 A, 33W 7.0 0 (3.18)
ü
— — 115 Vac , 60 Hz, 0.64 A, 75W 6. 50 (2.95)
ü
— — 115 Vac , 60 Hz, 0.64 A, 75W 6. 50 (2.95)
ü
— — 115 Vac , 60 Hz, 0.29 A, 33W 7.0 0 (3.18)
ü
— — 115 Vac , 60 Hz, 0.69 A, 83W 7.00 (3.18)
ü
— — 115 Vac , 60 Hz, 0.81 A, 97W 9.00 (4.08)
ü
— — 115 Vac , 60 Hz, 0.9 8 A, 117W 9.00 (4.08)
115 Vac , 60 Hz, 0.29 A, 33W 7.50 (3.4 0)
115 Vac , 60 Hz, 0.29 A, 33W 7.50 (3.4 0)
115 Vac , 60 Hz, 0.64 A, 75W 7.0 0 (3 .18 )
115 Vac , 60 Hz, 0.64 A, 75W 7.0 0 (3 .18 )
115 Vac , 60 Hz, 0.29 A, 33W 7.50 (3.4 0)
115 Vac , 60 Hz, 0.69 A, 83W 7.50 (3.4 0)
115 Vac , 60 Hz, 0.81 A, 97W 10. 0 0 (4. 54)
115 Vac , 60 Hz, 0.9 8 A, 117W 10.0 0 (4. 54)
— 115 Vac , 60 Hz, 0.29 A, 33W 7.50 (3.4 0)
— 115 Vac , 60 Hz, 0.29 A, 33W 7.50 (3.4 0)
— 115 Vac , 60 Hz, 0.64 A, 75W 7.0 0 (3 .18 )
— 115 Vac , 60 Hz, 0.64 A, 75W 7.0 0 (3 .18 )
— 115 Vac , 60 Hz, 0.29 A, 33W 7.50 (3.4 0)
— 115 Vac , 60 Hz, 0.69 A, 83W 7.50 (3.4 0)
— 115 Vac , 60 Hz, 0.81 A, 97W 10. 0 0 (4. 54)
— 115 Vac , 60 Hz, 0.9 8 A, 117W 10.0 0 (4. 54)
note: All weights are in lbs. (kg) *Union model with sweat hardware kit.
4.0 installation
warning
• Installationshouldonlybecompletedbyqualied
personnel, in accordance with all applicable codes,
and following generally accepted installation
practices.
• Ensurethehotwatersupplyisturnedobefore
installation, to avoid personal injury or damage
to property.
• Readandunderstandtheseinstructionsthoroughly before beginning the installation.
cautio n
Prior to installation, flush all piping of any foreign material to prevent pump blockage and prevent damage.
procedure
1 Timer installation and wiring
Note: Numerical component designations included in Steps i
through viii refer to circulator and timer components shown
in fig. 1. Steps 1 & 3 apply to retrofit installations.
i Disconnect the electrical supply to the circulator
ii Unfasten the mounting 2 screws 4 and remove the
terminal box cover 3.
iii Disconnect wire leads from the power supply.
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