Bell & Gossett P58749C AQS-3/4 Aquastat - Manual (Page 2)

TIMER INSTALLATION
1. Disconnect the electrical supply to the pump.
2. Remove the screw that holds the steel conduit box cover
to the pump.
3. Remove the conduit box cover. The timer assembly replaces
the conduit box cover.
4. Disconnect the black and white motor leads from the power
supply.
5. Position the plastic base for the timer assembly onto the
steel conduit box with the warning/caution label to the rear
of the pump.
6. Secure the plastic timer base to the conduit box with one
8-32 screw provided.
7. Verify that the electrical rating of the timer matches the
values shown on the nameplate of the circulator.
8. Make the electrical connections according to the wiring
diagram provided. (See Figure 2)
9. Position the cover/timer assembly over the base while
insuring that all wires are inside the box. Note that the
cover/timer assembly can only be assembled in one direc-
tion on the base. Line up the screw holes in the cover with
the screw holes in the base.
10. Fasten the cover to the base using (2) 8-32 screws provided.
AQUASTAT INSTALLATION
1. Follow steps 1 and 2 in the timer installation section.
2. Remove the conduit box cover. If the aquastat is installed
without the timer, the steel cover is reassembled on the
pump after the aquastat installation is complete.
3. Fasten the aquastat clip to the discharge or suction pipe of
the pump.
4. Make the electrical connections according to the wiring
diagram provided. (See Figure 1)
5. Reassemble the conduit box cover to the conduit box while
insuring that all wires are inside the box. Reinstall the 8-32
screw to secure the cover to the conduit box.
WARNING: ELECTRICAL SHOCK HAZARD
Disconnect and lock out the power before making
electrical connections. Failure to follow these instructions
could result in serious personal injury or death.
2
WARNING: ELECTRICAL SHOCK HAZARD
Electrical connections are to be made by a qualified
electrician in accordance with all applicable codes, ordi-
nances and good practices. Failure to follow these instruc-
tions could result in serious personal injury, death and/or
property damage.
WARNING: ELECTRICAL SHOCK HAZARD
Electrical connections are to be made by a qualified
electrician in accordance with all applicable codes, ordi-
nances and good practices. Failure to follow these instruc-
tions could result in serious personal injury, death and/or
property damage.
FIGURE 1
BLACK
WHITE
WHITE
BLACK
BLACK
WHITE
WHITE
BLACK
5 4 3 2 1
L
WHITE
N
L
BLACK
CAPACITOR
TIMER
AQUASTAT
FIGURE 2
CAPACITOR