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L4006A,B,E,H AQUASTAT® CONTROLLERS
3 60-0915—5
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
tank 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
12 in. (294 mm) pipe strap furnished.
When mounting the L4006H on a tank, use a pipe strap of
appropriate length, approximately 6-10 ft (17.6- 29.4m) for
the tank (not provided). Fit the pipe strap through the slot
in the mounting bracket. See Fig. 3.
Fig. 3. Mount L4006H directly on surface.
Wiring
WARNING
Electrical 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. 4. Typical hookup for gas-fired system with
domestic hot water.
Fig. 5. 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.
M8771A
ENCLOSED
SENSING BULB
PIPE
12 IN.
A
DJUSTABLE
PIPE
STRAP
AQUASTAT
CONTROLLER CASE
MOUNTING
BRACKET
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROJECTION 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
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
XX
4
2
1
1
2
60-0915-5.fm Page 3 Wednesday, June 20, 2007 9:16 AM