User Guide

Using your VZ-7
4
To use your VZ-7, follow these steps:
1) Carefully hook up the wire harnesses to
equipment.
2) Choose the mode you want to operate in.
3) Optionally, manipulate the Step switches.
4) Observe the displays and the equipment.
Explanation of steps:
Hook-Up.
The VZ-7 receives its power from
the furnace or air handler being tested. Start
by disconnecting the power in the equipment.
Next, squeeze the ends of the 5-wire power
connector on the motor and disconnect it. This
gives access to the unlocking tab on the 16-
pin motor connector. Press the tab and dis-
connect that connector from the motor also.
(The opposite end of this harness is plugged
into the circuit board on your equipment.) Now,
carefully plug that same 16-pin connector into
the VZ-7’s yellow connector. Do it carefully,
rocking the connector side-to-side instead of
applying more pressure. You can
permanately damage the connectors by
forcing them!