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© 

2010     D 

156 

06/10 

of 

12 

DEF

A

U

L

T

 MENU

Default Menu (1 of 2) 

Item Field

Range

Description

ΔT

Source

Maximum

Minimum

Storage

ΔT • hours

Diff’l

0 to 284°F

(0 to 158°C)

ΔT TEMPERATURE

Current temperature difference between the source and storage 
sensors. This is also the default display for the control. HEAT 
is displayed if the relay is closed. 

ΔT

Source

Maximum

Minimum

Storage

ΔT • hours

Diff’l

-76 to 284°F

(-60 to 140°C)

SOURCE TEMPERATURE

Current source temperature as measured by the source sensor. 
HEAT is displayed if the relay is closed.

ΔT

Source

Maximum

Minimum

Storage

ΔT • hours

Diff’l

-76 to 284°F

(-60 to 140°C)

STORAGE TEMPERATURE

Current storage temperature as measured by the storage 
sensor. HEAT is displayed if the relay is closed.

ΔT

Source

Maximum

Minimum

Storage

ΔT • hours

Diff’l

-76 to 284°F

(-60 to 140°C)

MAXIMUM SOURCE TEMPERATURE 

Maximum source temperature since this item was last 
cleared. To clear, press and hold the up and down buttons 
for 1 second. 

ΔT

Source

Maximum

Minimum

Storage

ΔT • hours

Diff’l

-76 to 284°F

(-60 to 140°C)

MINIMUM SOURCE TEMPERATURE 

Minimum source temperature since this item was last cleared. 
To clear, press and hold the up and down buttons for 1 
second. 

Use the Item button to view items in this menu. 
Some items can be cleared by pressing the Up and 
Down buttons simultaneously.

Display Menus

Item

 Continued on next page.

Содержание Difference Setpoint Control 156

Страница 1: ...a heat source Additional functions include 24 V ac OR 24 V dc power supply Monitor Minimum Maximum temperatures for Source Storage Displays number of running hours of the relay Displays T hours to per...

Страница 2: ...e 156 has three push buttons Item for selecting viewing and adjusting settings When programming the control record settings in the PRGM menu table which is found in the second half of this brochure It...

Страница 3: ...that follows will explain the on and off points of the relay T Source Maximum Minimum Storage T hours Diff l Item Number Field Displays the current value of the selected item Item Field Displays the c...

Страница 4: ...low the Minimum Source Setpoint the relay is turned off The relay remains off until the source temperature rises above the Minimum Source Setpoint plus the Minimum Source Differential The Source Minim...

Страница 5: ...429 50 29 34 C 446 60 70 F 57 C 411 60 55 48 C 425 Table 1 K values at 120 F 49 C for different heat transfer solutions based on glycol K increases with temperature Improper installation and operation...

Страница 6: ...and sensors Test the Sensors In order to test the sensors the actual temperature at each sensor location must be measured A good quality digital thermometer with a surface temperature probe is recomme...

Страница 7: ...he control These terminals are to be used as a switch to either make or break the pump circuit When the 156 requires the pump to run it closes the contact between terminals 3 and 4 Sensors and Un powe...

Страница 8: ...s Diff l 76 to 284 F 60 to 140 C STORAGE TEMPERATURE Current storage temperature as measured by the storage sensor HEAT is displayed if the relay is closed T Source Maximum Minimum Storage T hours Dif...

Страница 9: ...down buttons for 1 second T Source Maximum Minimum Storage T hours Diff l 0 to 999 999 hr RELAY RUNNING HOURS Number of Relay running hours since this item was last cleared The control will display t...

Страница 10: ...Default 40 F 4 C SOURCE MINIMUM SETPOINT If the Source temperature drops below this setpoint the relay is turned off T Source Maximum Minimum Storage T hours Diff l 2 to 45 F 1 to 25 C Default 10 F 6...

Страница 11: ...f l EEPROM READ ERROR The control was unable to read a piece of information from its EEPROM This error can be caused by a noisy power source The control will load the factory defaults and stop operati...

Страница 12: ...ether direct indirect special secondary incidental or consequential arising from ownership or use of the product or from defects in work manship or materials including any liability for fundamental br...

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