Default Display; Outdoor Reset - heat-timer DiGi-SPAN Elite Series Assembly, Installation And Operation Instructions

Outdoor Reset Mode
• When Output-On is selected, the HWE-MOV will energize the motorized valve open relay and system relay when System reads
Short or Open and Outdoor is below Outdoor Cutoff. However, if the Outdoor sensor fails and the Outdoor reads Short or Open, the
HWE-MOV will change the Target Set Point to the Max Water Temperature.
• When Output-Off is selected, the HWE-MOV will energize the motorized valve close relay when the System sensor reads Short or
Open. However, when the Outdoor sensor fails, reads short or open, the HWE-MOV will change the Target Set Point to be the Min
Water Temperature.
Set Point Mode
• Output On, the HWE-MOV will energize the motorized valve Open relay when the System sensor reads Short or Open.
• Output-Off, the HWE-MOV will energize the motorized valve Close relay when the System sensor reads Short or Open.
• The Outdoor Sensor Short or Open status will not affect the control operation in Set Point mode.
Setting the Control to Factory Default
To Reset the HWE-MOV control to its original factory defaults, power down the control. Hold down
the SET and DOWN buttons while powering the control back up until the Loading Default Values
screen appears. The Display will direct you to the Startup menu after the defaults are loaded to
program the control.
NOTE: When resetting the control to original factory defaults all control settings will be over written and will no longer exist.

Default Display

The default display will show the current System temperature and the Target temperature. In addition,
by clicking the Up or Down button, the display will show the current Outdoor temperature and the
current Return temperature, only if the return sensor is connected to terminals T3+ and T3-. However,
if no return sensor is connected, the control will display the current Outdoor temperature and the
Outdoor Cutoff.
Operating Menu Options
Set Point
(Available when Startup Control Mode = Set Point)
Options: From -10ºF/-23ºC to 230ºF/110ºC
/Set Point
SET
• The Set Point option provides the user with an adjustable fixed Target temperature to control the
system. If an Outdoor Sensor was connected, the next menu option will show Outdoor Cutoff,
otherwise there will be no Outdoor Cutoff option.

Outdoor Reset

(Available when Startup Control Mode = Outdoor Reset)
Options: From 1(8.00º/1.00º) to 12(1.00º/4.00º), Custom Default: 7(1.00º/1.00º)
/<Out. Reset>/Reset Ratio
SET
• The Reset Ratio determines how the System water temperature will vary with Outside temperature
(OD). With any of the ratios, the colder it becomes outside, the hotter the temperature of the system
water. The Ratio is measured as; Outdoor : System Water temperature.
• With a 1.00:4.00 ratio, the System water temperature will increase rapidly as the outside
temperature falls, hitting the maximum water temperature of 240°F at 24°F outdoor temperature.
With a 4.00 (OD):1.00 (SYS) ratio, the System water temperature (SYS) will increase slowly as the
outside temperature falls.
• The Reset Ratio controls the amount of heat that enters the heating system based on the outdoor
temperature. A higher numbered Reset Ratio will result in a higher Calculated water temperature.
See the Reset Ratio chart on the second page. If the application has radiant heat, a lower
6
Default: 70ºF/21ºC
SET
SET
SET
SET
SET
SET
Loading Default
SET
Values...
SET
SET
SYSTEM= 148 F
TARGET= 150 F
SET
SET
SET
SET
Outdoor= 48 F
Return= 125 F
SET
Outdoor= 48 F
Cutoff= 65 F
Set Point:
SET
70 F 140 F
SYSTEM= 148 F
TARGET= 150 F
Reset Ratio O/S:
Custom
1(8.00/1.00)
2(4.00/1.00)
3(3.00/1.00)
4(2.00/1.00)
5(1.50/1.00)
6(1.25/1.00)
7(1.00/1.00)
8(1.00/1.25)
9(1.00/1.50)
10(1.00/2.00)
11(1.00/3.00)
12(1.00/4.00)
S
S
S