INDIVIDUAL COMFORT MODULES 42BJ
Important: If the ICM is fitted with a return air temperature
sensor, the constant fresh air flow rate must not exceed
50% of the air flow rate delivered by the unit at minimum
speed.
The technology ensures totally safe self-regulation of the
dissipated power. In addition, each electric heater is fitted
with a self-resetting safety thermostat of the normally
closed type that cuts out when the temperature rises to
70°C with an average differential of 20 K.
Note: The 16.6 l/s or 60 m3/h fresh air controller can
be modified on site by removing or retracting of the two
plastic restrictions in order to bring its capacity up to a
maximum constant fresh air flow of 44.4 l/s (160 m3/h).
Caution: It is vital to disconnect the ICM from the general
power supply before carrying out any work on the electric
heater.
A label attached to the 42BJ shows how to modify the
co ntrol of the two plastic restrictions.
Note: To operate correctly, the 8.3 l/s (30 m3/h) constant
fresh air flow controller requires a differential pressure
in the range 50 Pa to 200 Pa. The 16.6 l/s (60 m3/h)
constant fresh air controller requires a differential pressure
in the range 70 Pa to 200 Pa.
■■ PTC electric heater (option)
These are high-performance PTC electric heaters (PTC =
positive temperature coefficient) which make use of two
technologies: electric heating and surface temperature
limitation (a state-of-the-art technology based on the use
of ceramics).
Enhanced comfort without stratification:
supply air temperature = 35°C
The true dissipated power is then dependent on the
temperature and flow rate of the incoming air.
Technical specifications
Water valve pressure drop
AIR TREATMENT
2
1
Pressure drop, kPa
1
2
Kvs = 1
Kvs = 1.6
CONTROLS
It should be noted that the valve body is the same for
whatever controller option is chosen.
■■ Electrothermal actuator
The actuator is a 230 V a.c. on/off type. Linear movement
is provided by the expansion and contraction of a wax
element heated by an electrical resistor.
■■ Two-way 1/2” valve body
-- 1/2” male BSP connection for union nuts
-- Straight valve body with arrow indicating direction of
flow embossed on valve body
-- Nominal size DN 15 for 1/2” valve
-- Fluid: water and glycol solution (max. 40% glycol)
-- Operating range: 2-90°C
-- Nominal pressure: PN 16 bar (1600 kPa)
-- Kvs = 1.6
■■ Three-way 1/2” valve body (with integral bypass)
-- 1/2” male BSP connection for union nuts
-- Straight valve body with arrow indicating direction of
flow embossed on valve body
-- Nominal size DN 15 for 1/2” valve
-- Fluid: water and glycol solution (max. 40% glycol)
-- Operating range: 2-90°C
-- Nominal pressure: PN 16 bar (1600 kPa)
-- Kvs = 1
Water flow rate, l/s (l/h)
Valves (option)
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
675