Caleffi solar iSolar2 257220A Spezifikationen

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Differential temperature controllers
iSolar
257 series
Product range
Code 257210A
iSolar1 controller with 1 standard output relay for pump control, includes 3 temperature sensors
Code 257220A
iSolar2 controller with 1 electronic output relay for pump speed control, includes 3 temperature sensors
Code 257230A
iSolar3 controller with 2 standard output relays for pump control, plus valve or second pump control, includes 3 temp. sensors
Code 257260A
iSolarPlus controller with 2 electronic output relays for pump speed control, plus valve or second pump control, includes 3 sensors
Technical specifications
Housing plastic:
Protection type:
Mounting:
Display:
Interface:
Inputs:
Outputs:
1 or 2 electronic or standard relays
Switching relay capacities:
Power supply:
Bus interface:
Performance
ΔT adjustment range:
Min. temperature differential
Hysteresis:
Max. tank temperature range:
Max. collector temperature range:
Emergency shut down of the collector:
Min. collector temperature range:
Antifreeze temperature option:
kWh (BTU) flow input:
Agency approvals
Temperature sensors
Platinum RTD type:
Collector sensor working range:
Tank sensor working range:
Length of collector cable:
Length of tank sensor cable:
Function
A multi-functional temperature differential controller with add-on system functions, the iSolar series
can be used for a wide variety of applications and has inputs for four PT1000 sensors. Preset factory
defaults are defined for control of a standard solar water heating system with a second relay (some
models) to divert any surplus heat. The auxiliary relay can be used to maintain the tank temperature,
protect the system from overheating, or use another source to heat the storage tank.
This controller features a large Liquid Crystal Display (LCD) user interface with three function keys.
The easy-to-use icons assist to operate and customize a solar heating system.
Tested and Approved by TÜV Rheinland as an approved U.S. Nationally Recognized
Testing Laboratory (NRTL) Exceeds or is equivalent to:
UL 60730-1A
US
US
C
C
CAN/CSA E60730-1
PC-ABS
Indoor only
wall or in 255 series pump station
LCD with symbols and text
three soft push buttons
4 temperature sensors
2 (1) A 115V
115 V - 60 Hz
V-Bus
2···40º Ra (1···20ºK)
2º Ra (1ºK)
2º Ra, ± 1º Ra (1ºK, ± .5ºK)
35···205°F (2···95ºC)
210···375°F (100···190ºC)
230···395°F (110···200ºC)
50···195ºF (10···90°C)
15···50°F (-10···10ºC)
0···5 gpm (0···20 lpm)
cTÜVus
1,000 ohm
-58···355ºF (-50···180°C)
15···175ºF (-10···80°C)
60 in. (1.5 m)
95 in. (2.5 m)
Resistance values for sensors subject to the temperature
°F
14
23
32
41
Ω
961
980
1000
1019
°F
95
104
113
122
Ω
1136
1155
1175
1194
°F
176
185
194
203
Ω
1309
1328
1347
1366
Dimensions
A
Code
A
B
250041A
4
"
6
"
3/8
3/4
CALEFFI
50
59
68
77
86
1039
1058
1078
1097
1117
131
140
149
158
167
1213
1232
1252
1271
1290
212
221
230
239
248
1385
1404
1423
1442
1461
D
C
D
Weight (lb)
6"
2"
0.9