Legalett 4000E User Manual
January, 2006
HEATING UNIT - 4000E
Form № 0528
Page 1 of 2
The 4000E heating-unit is installed in the foundation slab
or intermediate floor, and contains a fan and four heating
elements, with contactors that are controlled by 1 - 4
external electric room thermostats. It is used together
TECHNICAL DATA
Operating voltage ...............................1 P - 230V 60Hz
Output, electrical.......................................... 4 x 1000W
Fan motor power consumption ............................165W
Air flow w 8- 100 mm/4" pipe ..... ≥ 900 m3/h (530 CFM)
Air flow w 20 - 50 mm/2" pipe ... ≥ 750 m3/h (440 CFM)
Breaker rating (GFI recommended)........................ 30A
FUNCTION
The 4000E is controlled by one (single zone) to four
(quad zone) external electric room thermostats. These
external thermostats operate the contactors in the unit,
energizing the heating coil and fan when the room needs
heat. The unit is also equipped with seven overheating
protection devices.
with heating unit box 4000A 100/100 (100 mm / 4" spiral
pipes) or with heating unit box 4000A 50/50 (50 mm / 2"
plastic pipes).
This data is generic. Each Legalett installation is unique.
Refer to customized specifications on your installation
design drawing for actual design parameters.
1 P - 230V 60Hz
thermostat 1-4
30A circuit breaker
When controlled by a programmable thermostat, the
4000E can use two-tiered energy rates for night storage of
less expensive energy in the LEGALETT heated floor.
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ASSEMBLY
Install the heating unit boxes in the correct location,
with the height adjusted so that the lid is flush with the
concrete surface, before pouring the concrete. Refer
to the instructions on the box cover.
1. Run conduit from one of the cable inlets on the
box to the local disconnect for 230V power. Run
conduits from the remaining cable inlets to a
convenient location above the slab for each of the
230V thermostats.
2. (Optional) For future conversion to water insert,
run a conduit for an external 24V transformer (not
supplied) and optional signal wiring to the boiler.
As well, connect the sleeves for the inlet and outlet
water pipes to the water pipe connections of the
furnace box. Install the water pipes, and make sure
they extend at least 100 mm (4") into the box.
3. After the concrete has dried sufciently with the
construction heater, prepare the box for the heating
unit according to the steps below, which are performed
by an authorized electrician and plumber.
ELECTRICAL CONNECTIONS
4. Clean the furnace box carefully. No water or
dampness should be in the box or pipe system when
installing the permanent insert.
5. Install the heating unit insert with the terminal block
turned towards the electric connection conduit
openings.
Floor Hatch
Sound Insulation
mat, 30 mm (1")
Heating unit box
4000A 50/50 (2")
Electrical
connections
Heating unit
cover
Heating Insert
Heating unit box
Electrical connections
Water pipe inlet hole (future consideration)
Water pipe return hole (future consideration)
4000E
Heating unit box
4000A 100/100 (4")
is similar
W a t e r p i p e
con nec tions for
future conversion
to water
1. Check the electrical data on the unit so that other
installation materials are compatible. The installation
must be performed by an authorized electrician.
2. Install a properly sized two-pole local disconnect
to enable total isolation. GFI protectio n is
recommended.
3. Use properly sized copper wire for connection to the
panel.
4. Connect thermostats.
5. Seal the conduits which run into the unit using a duct
sealing compound for both water and electrical, after
the water and electrical connections have been made
for sound attenuation.
6. Install the heating unit cover. Test run for 1 hour and
then open for a check. If necessary clean, check
for dryness, and test run again. If moisture is still
present, re-install construction heater and run until
the system is dry.
7. Install the sound insulating foam-rubber mat between
the heating unit cover and the floor hatch.
8. Install the floor hatch. If desired, use standard
transition trim between the hatch and the floor.
Overheating Protection
If the overheating protection has tripped, then complete
the following steps:
110°C
O.H.
(230°F)
110°C
O.H.
(230°F)
L1
L1
1 P - 230V 60Hz
1000 W
75°C
O.H.
(165°F)
K1 K2 K3 K4
L2 1 2 3 4 5 6 7 8 9 10 11 12
L2
L2
L1
L2
L1
LOAD
30A circuit breaker
1000 W
75°C
O.H. O.H. O.H.
(165°F)
L2
L1
L1
LOAD
LOAD
L2
LOAD
LOAD
LOAD
75°C
(165°F)
L1
L1
LOAD
1000 W
L1
L2
LOAD
L1
L2
LOAD
LOAD
Thermostats 1 - 4
L2
L2
75°C
(165°F)
LOAD
LOAD
1000 W
Fan
M
Black
Blue
Brown
C
1. Turn off the power.
2. Carefully investigate the reason for the overheating.
Any repairs should only be performed by an authorized
electrician.
Contactors marked K1 - K4
O.H.= Overheating protection device
If 1 - 3 thermostats are used, install a jumper between
the connection blocks 3 and 6, 9 and 12 as required.
Refer to the floor plan for thermostat locations.
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