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convenience, you can make these three tie points within this enclosure. Over and
above the three tie points mentioned above, simply terminate "Y" and "G" at the
upper left terminal block.
b. Within the WF-LGR3 is a wire harness that goes from WF-LGR3 to the WF II
controller. Within this wire harness are two blue wires. Undo these, extend and connect
to the utility load control receiver. For electric energy operation (off-peak) the two blue
wires represent contact closure as shipped. Do not apply external voltage or external
power to the blue wires, they are simply looking for a closed contact during off-peak.
c. HP Outdoor Unit Connections – Over and above the three tie points mentioned above,
the only additional connection is the "Y" at the upper right terminal block. Since the
WarmFlo II controller inherently knows defrost and has its own methods for
distinguishing heat or cool mode, the switch over valve or reversing valve (RV) function
only applies to the thermostat and the outdoor unit.
d. Fan Center Connections - route a 5-wire cable from the WF-LGR3 module, bottom
center terminal block, to furnace fan center, same letter designated connections. The 5
wire may be required for variable speed furnace "Y" terminal, see diagram in white
section.
e. Multi-speed Blower operation – reference manual "Special Application/Installation
Instructions" section.
WarmFlo II Controller Connection
Assumption - The WarmFlo II is strictly an enhancement or "add to" product. This manual does not
attempt to define the heat pump manufacturers installation, and assumes the heat pump is functional and
has not been altered from the factory. Also, the installing technician must have basic knowledge and
understanding of heat pump control logic and/or wire colors/functions. The basic heat pump
installation, checkout, troubleshooting, repair of its factory standard components is not covered in this
manual.
Wiring Connections
1. Sensor connection – see page 4 "WarmFlo II Sensors".
2. WF II Controller is located on the cabinet right side door.
3. Plug the 4-wire pigtail from the WF-LGR3 into the left center connector. Do not force on the
connector, the connector only plugs in one way and should slide on easily.
4. Plug the yellow wire and connect to the WarmFlo II "Y" tab located on the top left portion of WF
controller.
Information - The WarmFlo II controller receives its operating power through the plug-in
wire harness. The yellow wire is simply the thermostat "call for heat" signal being
forwarded to the WarmFlo II controller.
5. The harness also comes with a violet wire, the violet wire is used as a "built-in" ODT for heat
pump compressor low temperature shut-off function. This function can have different meanings
depending upon setup. Reference "WarmFlo Handheld Analyzer/Laptop Software" section of
manual on ODT settings. Connect the violet wire to the WarmFlo II tab "HP ODT" or T4 (this
must be installed).
6. The cable has a 7
your desire for the emergency hookup you can choose one of two options:
i.
Full electric as emergency - Connect the thermostat "E" wire through the BRN/YEL in
the WF-LGR3 to the main WarmFlo board "E" tab. In this case keeping the blower
running must be very carefully evaluated. According to Electro's experience, most older
HP room thermostats drop the G function when you move the thermostat to "emergency".
If this is the case, add a piggyback or second wire from the main WarmFlo board "E" tab
to the interface module "G1" tab. However, in the case of operating with special jumpers
for multi-speed blower, simply activating "G1" does not give you the same multi-speed
11/01/2007
1. Where load management interrupt does not apply, simply leave the blue wires
tied together.
2. If load control reverse logic is required, keep the two blue wires shorted and
connect load control switch between X1 and R.
th
wire (brn/yel) is an extra wire for emergency connection. Depending upon
16
th
HI320
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