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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, do not use, tie off and do not plug into WF II board.
6. The cable has a 7
simply tie off.
7. Caution – 24 volts common grounding – the installer must determine whether the furnace fan
center COM screw terminal has a good ground bond (not simply furnace skin). If the fan center
COM is not adequately grounded, use the pigtail green wire (WarmFlo board, upper, C tab) for a
ground bond to the Electro-Mate cabinet power source ground lug. The upper right circuit board
mounting screw is a static ground protection point.
If your installation has special application and hookup conditions please see section located in
this manual called "Special Application/Installation Instructions".
WARMFLO II CONTROLLER SETUP OR PROGRAMMING
Important - Located on the WF II board is a firmware chip that determines a specific set of defaults (see
table below). However, this can be programmed (altered) with optional PC software (ET-SOFT-WF) or a
plug-in WarmFlo analyzer (WF-ANZ*). As part of the WF II system this chip represents critical defaults
and settings that can make your system operate correctly. It is a critical portion of the installation to
verify that the chip code sent with your WF II is correct for your intended application. The chip code is
located on a white label in the center of the WF II controller.
The table below represents the typical WF II chip codes and defaults for use with a WF-EM3. Please use
this table as a reference as you setup your WF II. See Operational Information and last section of this
manual for further information on these defaults.
Code
EMW
90°, 50°, 36°, 34°
EMR
90°, 50°, 30°, 20°
EMA
MU Time - Standby or Gas Furnace Operation - Whenever all four stages are full on (if it is not a 4-
stage Electro-Mate, this simply means full Electro-Mate output), and operating at a continuous 100% for
a fixed delay (see Chip Code Reference Table, MU Time); the WarmFlo II controller automatically
terminates all electric and starts the gas furnace. The gas furnace will be used to complete the heating
cycle until room thermostat heat call ends. During the next heat call, the Electro-Mate stages again
attempt to produce the WarmFlo II desired temperature. Again, if everything is at 100% plus the MU
time, the gas furnace takes over.
Electro-Mate, Non-Heat Pump, using EMW type program chip code – The outdoor sensor is used as
a staging disable function. With a call for heat, the desired temperature (DT) attempts to rise to "cal DT"
(WarmFlo calculated desired temperature). With this chip code the stages operating are limitied by the
enable temperature reflected below.
Stage 1 = 90°F
MU – Set at 90 minutes
11/01/2007
th
wire (brn/yel) which is simply an extra wire for special stat field hookups,
Chip Code Reference Table
Stg. Enable
MU Time
-
EMW Chip Code
Stage 2 = 50°F
Stage 3 = 36°F
7
ODT Mode
90
EL to SB
00
EL to SB
00
-
Stage 4 = 34°F
OT Function
DT cal.
DT flat
Disable
HI320
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