Graco Therm-O-Flow 55-H, Instructions-Parts List Manual

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16 310–534
Installation
Setting Alarm Temperatures
To set the alarm temperature:
1. If you have just set the set point, you will already
be in the set alarm mode. Go to step 2.
To change the mode to set alarm mode, press the
change mode (4) key twice.
2. Using the down (5) and up (6) arrow keys, set the
desired alarm point temperature.
3. When you have set the desired temperature, press
the change mode key (4) again. The mode
changes back to display mode.
Repeat the procedures in Setting Set Points and
Setting Alarm Temperatures for each of the tempera-
ture controls.
For more information about using the temperature
controls, see the literature that came with the electrical
control panel.
Configuring Temperature Controllers for Unused
Zones
If your electrical control panel has more temperature
controllers than are needed for your current applica-
tion, a qualified electrician must disconnect the un-
used temperature controllers.
CAUTION
If the unused controllers are not disconnected, the
supply unit will experience a high temperature fault
when power is applied to the supply unit.
The temperature controls are wired together in parallel.
When you disconnect one or more temperature con-
trollers, you must make sure to complete the power
circuit by reconnecting a jumper wire to an active
temperature controller (Fig. 7).
All Temperature Zones Active
Fig. 7
Power
Lead
Neutral