L4006A,B,E,H AQUASTAT® CONTROLLERS
3 60-0915—4
6. Make sure the end of the well fits into the hole in
the case. Position the immersion well clamp snugly
over the well flange and tighten the clamp screw
securely.
Mounting Surface Mount Model (L4006H)
The L4006H is designed for surface mounting on piping
or tanks and can be mounted in any position.
When mounting the L4006H on piping, the pipe should
be 1 in. (25 mm) diameter or larger for accurate
temperature sensing.
1. Remove any insulation from the pipe.
2. Thoroughly scrape off all scale, rust or paint.
3. Mount controller as shown in Fig. 3 using
adjustable pipe strap furnished.
When mounting the L4006H on a tank, use a pipe strap
(not provided) of appropriate length for the tank. Fit the
pipe strap through the slot in the mounting bracket. See
Fig. 3.
Wiring
WARNINGElectrical Shock Hazard.
Can cause serious injury, death or equipment
damage.
Disconnect power supply before connecting
wiring to avoid electrical shock or equipment
damage.
All wiring must comply with local codes and ordinances
regarding wire size, insulation, enclosure, etc. See Fig. 4
and 5 for typical diagrams of Aquastat® Controllers used
in heating systems.
Use these Aquastat Controllers with copper wire only.
Fig. 3. Mount L4006H directly on surface.
Fig. 4. Hookup for oil-fired, summer-winter, hydronic
system with domestic hot water. This is typical
where control for domestic hot water is added, or
where each Aquastat Controller is mounted in a
separate location.
M8771
ENCLOSED
SENSING BULB
PIPE
ADJUSTABLE
PIPE STRAP
AQUASTAT¤
CONTROLLER
CASE
1
2
3
4
T
T
IGNITION
BURNER
L4006B OR L4007B
CIRCULATOR
AQUASTAT¤
CONTROLLER
CIRCULATOR
L4006A OR L4007A LOW LIMIT
AQUASTAT¤ CONTROLLER
L1
(HOT) L2
L4006A OR L4007A
HIGH LIMIT
AQUASTAT¤
CONTROLLER
24 VOLT
THERMOSTAT
RA832A
SWITCHING RELAY
PROTECTORELAY¤
CONTROL
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
USE L4006E FOR MANUAL RESET.
1
2 M2855A
TT
XX4
2
1
1
2