Question about Heating & Cooling
Obtained used unit. I wonder if it is wired for 3 phase svc. I installed it, hooking it up to 240 V svc.. It runs, but doesn't get hot. It gets warm, but not hot. Possibly heating elements not wired for 240V but I'm thinking it may be set up for 3 phase from it's former location.
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Posted on Jan 02, 2017
Need front grill for singer model WJA-12 wall heater Cat # 9756-A
single phase 60 HZ
240 volts 5.2 Amps
Where can I find it?
Posted on Feb 10, 2009
I am an electrician. You must measure the voltage across the black and red wires. Measuring each wire to the neutral will not cut it. If both your red and black wire are on the same phase the heater will not work.
To double check your wiring, measure the voltage across the two screws feeding your subpanel, they should be 240v or 208v depending on your power company. Then do the same at the breaker feeding your thermostat. Again it should read 240v.
If you have no potential across the screws it is possible that you installed an incorrect breaker. Not all breakers with two screws on them are 240v breakers. There is what is called a twin or split breaker that has two screws that are on the same phase. These are for wiring two 110v circuits, when you run out of spaces in the panel.
Double check everything. This is a relatively easy circuit to wire, even for homeowners. If the heater does not work them something is wrong so do not leave the circuit energized.
Posted on Mar 16, 2009
To the best of my knowledge, Noma does not make a high voltage stat (M# would be more helpful). You most likely have a heating only stat that operates on 24VAC. Also, at that wattage, the wires on your thermostat would need to be a minimum of 12ga.
Posted on Oct 04, 2009
SOURCE: Lakewood heater 7101 schematic
The power cord goes the switch terminal 1 and 3.
Terminal 2 must be the opposite of terminal 1, such that when switched on, 1 & 2 connects. Terminal 4 must be the opposite of terminal 3, such that 3 & 4 connects.
Under this setup, you may connect red to terminal 2
and black to terminal 4.
Be sure of the 1 & 2 pair, as well as the 3 & 4 pair.
then, connect the red and black wires.
Hope this will help you.
Posted on Jan 06, 2010
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