Eco Heating Systems CB 105 HW, Installation, Service And User Manual

Page: 41 / 147

E93.1803.901 HW 42
8.1.10 P
UMP CONTROL
The applied pump must be a bronze or stainless steel pump and controlled only by the CB-HW water
heater control. If, for any reason, an external pump control is applied
without written approval of Eco
Heating systems then the complete warranty on the CB-HW water heater and all delivered parts will
become invalid.
8.1.11 T
ANK SENSOR
The EWD300, EWD500 and EWD750 are supplied including an already assembled slice sensor (directly glued
to the SS tank behind the insulation) The sensor has an cable with a length of 5 meter.
The Strap on sensor is preferred in case an other tank is used and the self adhesive sensor cannot be applied.
Assemble the Strap on sensor to the Return pipe of the tank as close as possible to the tank. The self adhesive
sensor must be glued at the stainless steel tank at the height of the return pipe. Use an immersion bulb sensor if
one of these previous solutions are not possible.
The immersion sensor has to be fitted into an immersion pipe at 1/5 from the bottom of the tank. So at a tank with
a total height of 200 cm the sensor has to be situated at 40 cm from the bottom.
S029.000.001
Repair set self adhesive sensor
Sensor 30x40 mm Cable 5 meter.
S022.500.008
Strap on sensor.
S022.500.009
Bulb sensor
Bulb Ø 6 mm, L= 45 mm.
Cable 2 meter.
When using another type or brand sensor be sure it meets the following specifications:
NTC 10K@25°C (77 °F) B3977k 3%@60°C (140°F)
Temperature
°C (°F)
Resistance
(Ω)
Temperature
°C (°F)
Resistance
(Ω)
Temperature
°C (°F)
Resistance
(Ω)
Temperature
°C (°F)
Resistance
(Ω)
-40 (-40) 334275 10 (50) 19897 50 (122) 3599 100 (212) 674
-30 (-22) 176133 20 (68) 12493 60 (140) 2454 110 (230) 506
-20 (-4) 96761 25 (77) 10000 70 (158) 1748 120 (248) 384
-10 (14) 55218 30 (86) 8056 80 (176) 1252 130 (266) 296
0 (32) 32624 40 (104) 5324 90 (184) 912 140 (284) 230
8.1.12 S
YSTEM
S
ENSOR
.
Always use a strap-on sensor besides the immersion tank sensor. This strap-on sensor has to be connected to
connections 3-4
“System Sensor” The strap-on system sensor has part number S022.500.008 and same specifi-
cations as above mentioned.
8.1.13 R
ETURN AND
S
UPPLY PIPING OF A NON
EWD T
ANK
To get a good mix of hot and cold water and therefore a better temperature arrangement of Water Heater and
Tank the Supply and Return pipe of the tank should be situated in the bottom 20% of the tank height preferable.