Page 1
L6006A
Aquastat® Controller
INSTALLATION INSTRUCTIONS
APPLICATION
The Honeywell SUPER TRADELINE® L6006A Controller
operates in response to temperature changes in hydronic
heating systems. It provides spdt switching for high limit,
low limit or circulator control.
The L6006A is designed for horizontal or vertical
insertion/mounting using an immersion well (not
included). Refer to Wells and Fittings for Temperature
Controllers, form 68-0040, for part numbers and ordering
information.
A package of heat-conductive compound is included for
use when the sensing bulb is inserted into a well
designed for a larger bulb.
NOTE: See form 69-0955, 107408, 120650 Heat
Conductive Compounds Material Safety Data
Sheet (MSDS) when used with this Aquas tat®
Controller.
A 124904 Well Adapter, for use on old wells that do not fit
the L6006A Immersion Well Clamp, can be ordered
separately, see form 68-0040. A setting stop is
factory-installed to prevent setting above 240°F (116°C)
limit. Adjustable differential range is 5°F to 30°F (3°C to
17°C).
Table 1. Electrical Ratings (Amperes):
Type 120 Vac 240 Vac
Full Load 8 5.1
Locked Rotor 48 30.6
Millivoltage 0.25 to 0.25 to 12 Vdc
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
WARNING
Electrical Shock Hazard.
Can cause serious injury, death or equipment
damage.
Disconnect power supply before connecting
wiring to prevent electrical shock or equipment
damage.
Follow instructions furnished by the system
manufacturer, if available. Otherwise, refer to the
following procedure.
To install this L6006A as a replacement for other L6006A
models:
1. Shut off the power and remove the old control in
the existing application. If the old immersion well
appears suitable and if the adapter clamp on the
L6006A Aquastat Controller fits the old immersion
well spud, this immersion well does not need to be
replaced.
2. If the immersion well is to be replaced and if the
system is filled, drain the system to a point below
the boiler tapping.
3. Remove plug (or old immersion well) from boiler
tapping.
4. Install new immersion well (not included). When a
boiler tapping is greater than 1/2 in. or 3/4 in. NPT,
use a reduction fitting to adapt the boiler opening to
the 1/2 in. or 3/4 in. NPT threads that are standard
with the well or fitting. Use thread seal compound
or equivalent on the fitting.
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
69- 0235- 5
Page 2
L6006A AQUASTAT® CONTROLLER
M8870A
N
1
V
NOTE: Some models have an adjustable tubing length
to 3 in. (76 mm). In these models, pull out extra
tubing inside the case if needed.
5. Fill the system. Make sure that the well is screwed
in tightly enough to prevent leakage. Do not tighten
after controller is secured to the well, applying
force to the case.
6. Loosen the screw (at the top of the case, above the
scale setting), and remove the cover. Loosen the
two screws that secure the adapter clamp (See
Fig. 1).
7. Determine whether vertical or horizontal mounting
method is desired; see Fig. 2 for mounting bracket
placement.
8. Insert the sensing element into the immersion well.
9. Fasten the case of the Aquastat Controller to the
well with the adapter clamp. Make certain that the
clamp is properly positioned over the groove of the
well spud. Also be sure the flange at the opening of
the well fits snugly into the opening of the case. Be
sure the sensing element bulb bottoms in the well.
Wiring
Disconnect power supply before connecting wiring to
prevent electrical shock or equipment damage. Make
sure all wiring complies with local electrical codes and
ordinances. The case has a knockout for 1/2 in. conduit.
Fig. 3 and 4 show typical wiring diagrams of Aquastat¨
Controllers used in heating systems.
SETPOINT
INDICATING
WHEEL
DIFFERENTIAL
ADJUSTMENT
WHEEL
1
INSERTIO
ELEMENT
ADAPTER
CLAMP
SCREW (2)
HEAT
CONDUCTIVE
1
WITH VERTICAL MOUNTING OF IMMERSION WELL,
ELEMENT IS ATTACHED TO BOTTOM OF CASE.
Fig. 1. Internal view of L6006A and
accompanying components.
COMPOUND
ERTICAL MOUNTING
Fig. 2. Mounting bracket placement for vertical or horizontal mounting.
69-0235—5 2
HORIZONTAL MOUNTING
M887
Page 3
L6006A AQUASTAT® CONTROLLER
)
C
0
T
T
M8872
PROTECTORELAY
CONTROL
IGNITION
BURNER
MOTOR
LINE VOLTAGE
LOW VOLTAGE
1
PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
R-B OPENS, R-W CLOSES ON TEMPERATURE RISE.
Fig. 3. Typical wiring hookup using
control in oil-fired hydronic system.
L6006
IRCULATOR
AND
LOW LIMIT
CONTROL
LOW VOLTAGE
LINE VOLTAGE
PILOTSTAT
POWER SUPPLY. PROVIDE DISCONNECT MEANS
1
AND OVERLOAD PROTECTION AS REQUIRED.
2
WHEN USING CIRCULATOR LOW LIMIT CONTROL,
REMOVE L1-3 JUMPER.
Fig. 4. Typical wiring hookup using L6006
HIGH LIMIT
1
2
L6006
CIRCULATOR
AND LOW
4
LIMIT CONTROL
3
T
T
L6006 for low limit and circulator
1
R
W
B
LINE VOLTAGE
GAS CONTROL
with L8148A Aquastat Relay.
24V
THERMOSTAT
SWITCHING RELAY
W
R
2
B
CIRCULATOR
L1
L2
(HOT)
L1
L2
2
3
B
L8148A
R
C1 C2 B1 B2
CIRCULATOR
12212
OIL BURNER RELAY
LINE VOLTAGE
TERMINALS
T
1
SERIES 8
THERMOSTA
T
M8783
M8782
OPERATION
Select control settings according to the heating system
manufacturer recommendations.
High-limit Controller—shuts off burner when water
temperature exceeds high-limit setting. R-B contacts
make, and burner restarts when temperature drops to
high-limit setting minus the temperature differential.
Low-limit Controller—maintains minimum water
temperature for domestic hot water; e.g., tankless coil in
heating boiler. Makes R-B contacts at temperature
setting minus differential.
L1
(HOT
Circulator Controller—prevents circulation of water that is
L2
not hot enough. Breaks R-W contacts for circulator circuit
at temperature setting minus differential; remakes the
1
R-W contacts for circuit when the temperature setting
is reached.
Switching action operates as follows:
When there is a drop in water temperature (to dial
setting, less differential), the R to B contacts make
and the R to W contacts break, preventing circulator
operation. When there is a rise in water temperature
(to dial setting), R to B contacts break and R to W
circulator contacts make.
ADJUSTMENT
Set the differential according to the system manufacturer
recommendations. 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 according to the system
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. Move the factory-set stop if
desired, as shown in Fig. 5.
TO CHANGE SETTING, INSERT BENT PAPER CLIP INTO SMALL HOLE
IN DIAL AND PUSH ENOUGH TO ALLOW FOR MOVEMENT OF
FACTORY-SET STOP.
BENT PAPER CLIP
SMALL HOLE
FACTORY-SE
STOP
Fig. 5. Moving factory-set stop on L6006A.
3 69-0235—5
Page 4
L6006A AQUASTAT® CONTROLLER
CHECKOUT
Check to make certain that the Aquastat Controller was
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 limit
and circulator control.
Automation and Control Solutions Automation and Control Solutions
Honeywell Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario
69-0235—5 G.R. Rev. 12-01 www.honeywell.com
M1V 4Z9
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
Loading...