Honeywell L4006E Benutzerhandbuch

60-0915—4

4

For proper selections of settings, follow boiler 
manufacturer recommendations:

1. High limit controller: Shuts off burner when water 

temperature exceeds high limit setting. Burner 
restarts when temperature drops to high limit 

setting minus the temperature differential. 

NOTE: If L4006E or H, see Manual Reset section.

2. Low limit controller: Maintains minimum boiler tem-

perature for domestic hot water. Turns boiler on at 

temperature setting, less differential.

3. Circulator controller: Prevents circulation of water 

that is not hot enough. Breaks circulator circuit at 
temperature setting minus differential and remakes 

at setting.

Set the differential to correspond with the boiler 
manufacturer recommendations. To adjust models with 

adjustable differential, rotate the wheel on the back of the 
snap switch until the desired reading is aligned with the V 

notch in the frame. The wheel provides an adjustment 
from 5°F to 30°F (3°C to 17°C). Replace the cover on the 

Aquastat Controller.

Adjust the control point to correspond with the boiler 
manufacturer recommendations. To  adjust, insert a 

screwdriver in the slotted screw type head located 
beneath the window in the cover. Turn the scale to the 

desired control point.

When the device includes manual reset (L4006E and H), 
be sure to press the red reset button on the front of the 

case to make sure that the controller is not locked out on 
safety. When checking out the system, adjust the control 

point low enough so the temperature of the controlled 
medium reaches the high limit setting, the burner shuts 

off, and the Aquastat Controller locks out. When the 
temperature of the controlled medium drops to the high 

limit setting minus differential, push the manual reset 
button and the system should be  operative again. Reset 

control to proper high limit setting.

Check to make certain that the Aquastat Controller has 
been installed and adjusted properly. Put the system into 

operation and observe the action of the device through 
several cycles to make certain that it provides proper 
control of the system as described in the Operations 

section. Further adjustments can be made to meet more 
exact comfort requirements.

POWER SUPPLY.  PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.

USE L4006E FOR MANUAL RESET.

1

2  

M2856

2  

L1 
(HOT)

L2

1

24 VOLT
THERMOSTAT

LOW WATER
CUTOFF

PRESSURE 
CONTROL

L4006A OR
L4007A
LOW LIMIT
AQUASTAT¤
CONTROLLER

GAS
VALVE

PILOTSTAT¤
CONTROL