Page 6
Configuring/Detecting Hot Water Heat Section
IMPORTANT
— Hot water heat installation
require the air handler control to be manually
configured to detect hot water heat section.
S
Set desired
Heating Mode Blower Speed
jumper pin.
S
Hot water heat is stage by room thermostat. The air handler control comes with
factory jumper between W1 and W2 and W2 and W3.
S
Refer to air handler control checkout flow diagram for operation.
Configuration
Air handler control in
Idle Mode
(No heating
cooling or indoor fan
operation)
To enter
hot water heat
configuration mode
, push and
hold button next to
single-character LED display until
dash
symbol (solid bar) appears.
Then, release button.
Turn room thermostat to
OFF
.
Yes
Solid
dash
starts blinking
on single character LED
display
Push and hold button until the solid
H
symbol is displayed on the
single-character LED display. Then, release button.
Finished
No
1
Air handler control will start the indoor blower motor to the selected heat jumper speed setting and cycle the hot water heat relay ON to automati
cally detect the hot water heat section.
2
Air handler control waits for maximum of ten seconds to detect the hot water heat 22VDC relay coil is energized:
A
If relay coil current is detected within 10 seconds, the air handler control will show a
1
on the single-character LED display indicating that the
first-stage hot water heat has been detected. As each additional heat section is detected, the single-character LED will display that hot
water heat number.
B
If relay coil current is not detected within 10 seconds, the air handler control will exit the current active mode and resume operation with hot
water heat disabled.
3
The air handler control will automatically exit current active mode when configuration is completed. To verify that the hot water section detected
matches the installed hot water heat package, the field MUST CONFIRM that the last number the single character LED display before exiting the
configuring/detection mode matches the hot water heat section. The air handler control stores the hot water heat stage in non-volatile memory.
4
After the detection is finished, unit will continue to operate for an additional 30 seconds.
NOTE — If the air handler control is unable to verify all 22 volt DC hot water heat relay(s) were energized using hot water heater detection after
the air handler control button is pushed, or power to the air handler control is cycled, then the configuration procedure must be repeated.
_
_
H
This procedure is for the installation of one hot water heat section. This procedure is typically used to configure hot water heat
which is the same as configuring for electric heat.
Figure 7. Heat Discovery Mode
