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MINI ULTRA ELECTRIC BOILERS Installation and operating manual (Revision: May 2015)
21
Boiler safety valve is
leaking
-Pressure reading at the indicator
shows a pressure above 28 psi.
-Pressure is below 28 psi
-The pressure regulator on the distribution
system is defective or the expansion tank is
too small or defective.
-Replace the safety valve
Table 4: Sensors resistance value vs real temperature.
Température
Résistance
Température
Résistance
Température
Résistance
Température
Résistance
°F °C Ω °F °C Ω °F °C Ω °F °C Ω
-50 -46 490,813 20 -7 46,218 90 32 7,334 160 71 1,689
-45 -43 405,71 25 -4 39,913 95 35 6,532 165 74 1,538
-40 -40 336,606 30 -1 34,558 100 38 5,826 170 77 1,403
-35 -37 280,279 35 2 29,996 105 41 5,21 175 79 1,281
-30 -34 234,196 40 4 26,099 110 43 4,665 180 82 1,172
-25 -32 196,358 45 7 22,763 115 46 4,184 185 85 1,073
-20 -29 165,18 50 10 19,9 120 49 3,76 190 88 983
-15 -26 139,402 55 13 17,436 125 52 3,383 195 91 903
-10 -23 118,018 60 16 15,311 130 54 3,05 200 93 829
-5 -21 100,221 65 18 13,474 135 57 2,754 205 96 763
0 -18 85,362 70 21 11,883 140 60 2,49 210 99 703
5 -15 72,918 75 24 10,501 145 63 2,255 215 102 648
10 -12 62,465 80 27 9,299 150 66 2,045 220 104 598
15 -9 53,658 85 29 8,25 155 68 1,857 225 107 553
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