GlennLever wrote:
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).
Go back an re-read that statement.
It is talking about a 'dual switch' panel with one fault light.
If both 'switches are on and gas faults......then light will NOT come on until electric is turned off.
Should NOT wire electric directly and use your old on/off switch.
With the design change.......only ONE set of t-stat (DC set) that are wired thru circuit board.
Old design had 120V AC set of t-stats for electric and a 12V DC set of t-stats for gas. Worked independent of each other.
New design....one set for both...using DC thru circuit board.
Running 120V AC directly to element bypasses DC set of t-stats.
NO temp control that way. Element would be ON----heating without control or trip scheme.
