Bosch WH36 Installation Manual And Operating Instructions page 15

Using an ohmmeter to check for premature element failure
LEFT MODULE Top View LEFT MODULE Top View
Rear of Heater Rear of Heater
Front of Heater Front of Heater
Fig. 9 Heating elements
Meter probes Ohm Readings
Outer to Outer 10.5 ± 0.8 Ohms
Middle to Middle 14.3 ± 0.9 Ohms
Inner to Inner 16.0 ± 1.2 Ohms
Table 8
The WH36 models are rated for 240V and will also operate at
220V or 208V with reduced output. The output will vary in
accordance with the ratios, mentioned in table 10.
Ratios
Volts
Output Ratio
Table 9
Tronic 5000C
Center Module Top View Center Module Top View
Meter probes
Outer to Outer
Middle to Middle
Inner to Inner
208V
0.75
Rear of Heater Rear of Heater
Front of Heater Front of Heater
Ohm Readings
11.4 ± 0.9 Ohms
12.1 ± 0.9 Ohms
17.8 ± 1.3 Ohms
220V
0.84
Maintenance | 15
RIGHT MODULE Top View RIGHT MODULE Top View
Rear of Heater Rear of Heater
Front of Heater Front of Heater
Meter probes Ohm Readings
Outer to Outer 9.9 ± 0.8 Ohms
Middle to Middle 13.1 ± 0.9 Ohms
Inner to Inner 20.0 ± 1.4 Ohms
240V
1
6 720 647 022 (2013/04)
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