Graco Therm-O-Flow Plus, Инструкция по эксплуатации

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Installation
Optional Inactivity Timer Kit 233097
The Inactivity Timer will shut off all power to the heat
zones when the pump has not operated for 2–10
hours. This is done by a proximity switch mounted to
the pump assembly, which senses movement of a
collar mounted to the connecting rods of the air motor
and the pump assembly. Every time the collar moves
in front of the proximity switch, the timer in the main
control box resets itself and starts a new time out
cycle. Once the timer has timed out without pump
activity, the BLUE light indicating AUTO HEAT OFF will
illuminate. To reset, turn the HEAT OFF/ON switch to
OFF, then to ON.
If the Inactivity Timer Kit 233097 is ordered as a kit for
an existing system, the proximity switch will need to be
mounted to the pump assembly and wired to the pump
j–box assembly. Also the timer assembly will come
with wires pre–labeled for mounting within the Therm–
O–Flow plus control box assembly. To connect the
Inactivity Timer Kit, refer to Fig. 7.
The proximity switch contains all the hardware required
to mount to the tie rods of the pump. Ensure the
distance from the top of the mounting plate of the
proximity switch to the bottom of the air motor housing
is 2.63 in. Refer to Fig. 7. Mount the collar over the
existing connecting rod nut by breaking loose the
connection, running the air motor to allow the collar to
fit over the nut, and reconnect the nut to the air motor
shaft. Terminate the wires of the proximity switch in
the pump j–box by removing the plug of an unused
hole and terminate the wires to terminals 1251 and
1311 as shown. (Polarity of the wires is not important).
Snap the timer assembly onto the din rail of the control
panel as shown. The schematic diagram of the related
section of the control panel is shown for reference.
Ensure the top dial on the timer is set for 1 to 10
hours, and the bottom dial is set at 2. This will set the
timer for automatic shut–off of all power to the heat
zones on the control box. If the timer has not been
reset by the proximity switch by movement of the
pump, all the heat zones will not have power to oper-
ate. The BLUE light on the front of the panel will be
illuminated, indicating the timer has timed out and the
AUTO HEAT OFF has been activated by the timer. To
reset the timer, turn the HEAT ON/OFF switch to OFF
then ON again. The timer will reset and another 2
hour time out will start.
NOTE: Never set the timer for less time than it takes
your system to fully heat up from a cold start.