Install Instructions

installation &
operating instructions
Astro 2 series
Hot water re-circulation system
5
5 To verify the circulator shaft still spins freely:
i Remove the plug from the end of circulator with a slotted
screwdriver.
ii Insert the screwdriver in the slot in the end of the shaft.
iii Ensure the shaft turns freely and smoothly in both
directions.
iv Replace the plug and gently tighten.
5.0 operation
caution
Never operate the system 'dry' or permanent dam-
age may occur to the circulator. Never shut o the
water supply or restrict flow in any way while the
circulator is operating.
1 Verify water is present at the circulator.
2 Verify the power cord is plugged into an appropriate house-
hold electrical receptacle.
3 To continuously run the circulator or test for initial operation,
set the manual override switch to the on position and verify
the circulator operates smoothly and quietly.
4 To prevent circulator operation, such as for extended periods
that the residence will be V acated, set the manual over ride
switch to the o position.
5 For normal automatic operation, set the clock/timer as
required and move the manual override switch to the
auto position.
manual override switch positions
6.0 setting the clock/timer
1 Rotate the dial in a clockwise direction until both the time
shown, and the appropriate am or pm indicator, correspond
to the current time of day. (This adjustment is required for
initial operation, following a power interruption, to adjust for
daylight savings time, or for periodic time correction.)
2 Remove the clear plastic cover from the dial.
3 The outer ring of the dial has an adjustable tab for each 15
minute time interval of a 24 hour day. To enable circulator
operation for a specific time interval, slide the correspond-
ing interval tab toward the perimeter of the dial. All tabs
positioned toward the center of the dial disable circulator
operation for those time intervals.
4 Verify the manual override switch is in the auto position.
5 Replace the clear plastic cover on the dial.
7.0 replacement parts
astro models (pump only) item number
Astro 220ssu w/ ½" swt 110223-301
Astro 220ssu w/ ¾" swt 110223-302
Astro 225bs ½" swt 110223-303
Astro 225bs ¾" swt 110223-304
Astro 230ss 110223-306
Astro 250ss 110223-308
Astro 220ssu 110223-309
Astro 225ssu 110223-310
part description item number
24-Hour timer 810223-130
Timer cover 110223-041
½" Aquastat 110123-120
¾" Aquastat 110123-121
o
on
auto
dial
interval tabs
(15 minutes each)
manual override
current time
am/pm indicators