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L4006,7,8; L6006,7,8 AQUASTAT
®
CONTROLLERS
60-2104—10 12
Mounting on Suction Line
1. In cooling units with more than one suction line, place
the sensing bulb on the common line.
2. Make certain the bulb is at least 2 ft (0.6 m) from the
point at which the suction line leaves the cooler. This
prevents the outside temperature from being transmitted
to the remote bulb through the copper tubing of the
suction line.
3. Place the remote sensing bulb on the side of the
horizontal suction line between the coil and trap (not on
the trap).
4. Attach the sensing bulb to the suction line with clips or
straps. (See Fig. 17).
5. Coil the excess length of capillary tubing near the
L6008A case.
Fig. 16. Securing remote bulb in clip
when mounting with guard bracket.
Fig. 17. Attaching remote bulb to horizontal suction line.
Mounting Surface Mount Models
The L4006H and L6006C are designed for surface mounting
on piping or tanks. Mount the controller directly on the tank
surface using the adjustable mounting bracket as shown in
Fig. 18. The controller can be mounted in any position.
When mounting the L4006H or L6006C on piping, the pipe
should be 1 in. (25 mm) diameter or larger for accurate
temperature sensing. Remove any insulation from the pipe.
Thoroughly scrape off all scale, rust, or paint. Mount the
controller using adjustable bracket provided. Turn on power.
Wiring
Disconnect power supply before beginning installation to
prevent electrical shock or equipment damage.
All wiring must comply with local codes and ordinances
regarding wire size, type of insulation, enclosure, etc.
Figures 19 through 28 show typical hookups.
When wiring a switch equipped with a 1/4 in. (19 mm) tab
terminal connector, use 18 AWG to 22 AWG (0.8 mm
2
to
0.3 mm
2
) gauge wire with an AMP Inc. part no. 2-520129-2
fully insulated flag receptable connector or equivalent.
Fig. 18. Mounting L4006H or L6006C directly on surface.
Fig. 19. Typical gas-fired system with domestic hot water.
M8791A
SUPPORTING
CLIP
SENSOR
M8805A
L6008A
CIRCULATOR
LOW LIMIT
CONTROLLER
CAPILLARY
REMOTE
BULB
SUCTION
LINE
BULB CLIPS
TO SUCTION LINE
COIL
COOLER
WALL
SUCTION LINE
LEAVES
COOLER
M8771B
ENCLOSED
SENSING BULB
PIPE
12 IN.
A
DJUSTABLE
PIPE
STRAP
AQUASTAT
CONTROLLER CASE
MOUNTING
BRACKET
®
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
USE L4006E FOR MANUAL RESET.
1
2
M2856B
2
L1
(HOT)
L2
1
24 VOLT
THERMOSTAT
LOW WATER
CUTOFF
PRESSURE
CONTROL
L4006A OR
L4007A
LOW LIMIT
AQUASTAT
CONTROLLER
GAS
VALVE
PILOTSTAT
CONTROL
®