Page 3 of 4
AQUASTAT CONTROL ACCESSORY
TECHNICAL DATA
Description:
Aquastat (thermostatic) switch
Type:
Surface sensing, snap acting bimetallic disc
Enclosure: Environmentally
sealed
Switch Modes*:
105 ± 5°F (40 ± 2°C) pump switches OFF
85 ± 6°F (29 ± 3°C) pump switches ON
Contact Position: Normally open
Mounting:
1/2": Clip-on type for 5/8" O.D. system piping size (i.e., 1/2" I.D. copper tubing or 3/8" steel pipe)
3/4": Clip-on type for 7/8" O.D. system piping size (i.e., 3/4" I.D. copper tubing or 1/2" steel pipe)
May be mounted on either the inlet or outlet piping of the circulator.
Lead Length:
14” (356 mm)
*Temperatures indicated are at pipe surface
AQUASTAT INSTALLATION
1.
Follow Steps 1, 2 and 3 in the Timer Installation section
2.
The aquastat control is a surface temperature sensing device that must be in contact
with the system piping to operate properly. Separate models include clip-on mounts
for 3/4" (7/8" O.D.) and 1/2" (5/8" O.D.) copper tubing. (See Fig. 3)
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 140ºF (60ºC). Provided with R/C crimp
connectors for attachment to the ground.
4.
Close the terminal box cover and fasten the screw
TIMER and AQUASTAT INSTALLATION
Follow the installation steps in both the Timer and Aquastat installation instructions and refer to Fig. 5 for
the wiring connections.
Fig. 4 Astro Series circulator with Aquastat Control wiring diagram
Fig. 3
Fig. 5 Astro Series circulator with 24-Hour Timer and Aquastat Control wiring diagram
