Honeywell L6007 Manuale Utente

9

60-2104—10

Models that provide for direct immersion of the sensing 

element into the boiler include a bulb compression fitting 

assembly instead of an immersion well. Install the fitting in the 

boiler tapping as follows:

1. Be sure the sealing washer is in place as shown in 

Fig. 7. Make sure that the spud of the bulb compression 

fitting is screwed in tightly enough to prevent leaking.

2. Insert the immersion sensing bulb through the bulb 

compression fitting. Adjust the adapter clamp so that the 

clamp fits over the groove at the opening of the bulb 

compression fitting.

3. Tighten the adapter clamp screws so that the Aquastat 

Controller is firmly attached to the bulb compression 

fitting.

The remote temperature-sensing bulb can either be installed in 

an immersion well (See Fig. 8) that extends into the boiler or 

tank, or it can be directly immersed in the controlled medium 

(See Fig. 9). For installations that do not use a well, secure the 

remote bulb with a bulb compression fitting (See Fig. 10), or 

capillary compression fitting. (See Fig. 11).

Order well, well adapter, bulb compression fitting or capillary 

compression fitting separately. See form no. 68-0040, Wells 

and Fittings for Temperature Controllers. If used, well must 

snugly fit sensing bulb for the best thermal response. Insert 

bulb until it rests against the bottom of the well. Hold it there 

while tightening the tubing clamp. (See Fig. 8).

The boiler manufacturer usually provides a tapping for the 

insertion of the Aquastat Controller sensing element. This 

tapping should be located at a point where typical water 

temperature can be measured. Never locate the bulb or 

protecting immersion well close to a hot or cold water inlet or a 

steam coil.

If the system is filled, drain system to a point below the boiler 

tapping, or wherever the sensing bulb is to be installed.

The bulb can also be installed in the supply line of an indirect 

water heater, in the direct water heater itself, or in the feed 

riser, about 6 in. (153 mm) above the boiler. If the riser is 

valved, the bulb can be installed between the boiler and the 

valve.

NOTE: Do not make sharp bends or kinks in the capillary. 

Make bends no sharper than 1 in. (25 mm) radius.

After installing the controller, carefully coil the excess capillary 

at the bottom of the controller case.

1. Screw the well into the boiler, tank, or pipe tapping.

2. Insert the bulb in the well, pushing the tubing until the 

bulb bottoms in the well.

3. Attach the retainer clamp to the end of the well spud. 

Loosen the draw nut and spread the jaws of the clamp 

with the screwdriver if necessary. (See Fig. 8).

4. With the retainer clamp attached to the well spud (be 

sure the jaws of the clamp hook over the ridge at the end 

of the spud, as shown at points A in Fig. 8), adjust the 

tubing to fit through the retainer clamp groove, as shown 

at point B in Fig. 8.

5. Tighten the draw nut so that the retainer clamp is firmly 

attached to the well spud and the tubing is held securely 

in place.

M8806A

SETPOINT

INDICATING DIAL

DIFFERENTIAL

ADJUSTMENT

WHEEL

ADAPTER CLAMP

SCREWS

INSERTION

ELEMENT

WITH VERTICAL MOUNTING OF

IMMERSION WELL, ELEMENT IS 

ATTACHED TO BOTTOM OF THE 

CASE.

SELECT MODELS HAVE SCREW 

TERMINAL, NOT TAB TERMINAL.

1

2

2

1

M8774A

SENSING BULB

BULB COMPRESSION

FITTING

SEALING WASHER

ADAPTER CLAMPS

FIT OVER 

GROOVE

SPLIT SLEEVE

ADAPTER 

CLAMP