Old-Biscuit wrote:
That diagram is showing wiring for gas or electric with one switch.....
What is missing is that 2 switches are needed. One for each heating source.
Can you tie both to 1 single switch. Never tried it. Not a normal/standard configuration
Both electric/gas would operate ALL the time/at same time.
No individual heating option.
IF 'Fault' occurs don't know if both sources would trip or just one with issue ?
(Individual switches.......only the one with issue would trip on fault. Fault reset by turning On/OFF switch off then back on--after issue repaired that caused fault)
Instructions says that when operating both if the gas fails to light the fault light will not light and the unit will continue operation on just electric.
The old unit had a separate wall switch to supply 110 electric to the heater. If I use the same wire the new unit will not receive 110 unless the wall switch is turned one (even if the units relay for 110 is tripped by the single switch).
I think I'm good that way.
Now I just have to overcome the physical differences (location of the 110 relay box on the rear is in the way of the plumbing, and the ridge foam insulation on the back sticks out and interferes with the plumbing also
