Honeywell Manual 4 Wire Premium Baseboard/Line... sold by Jensen OK, here we go. This product comes in a nice little box and is packed well. It looks basic and works, sort of like it should.l --- This thermostat is is questionably accurate and I will explain...
Honeywell Manual 4 Wire Premium Baseboard/Line... sold by Jensen
OK, here we go.
This product comes in a nice little box and is packed well. It looks basic and works, sort of like it should.l
--- This thermostat is is questionably accurate and I will explain why
for keeping the room warm, it will do this, in a acceptable manner but if you require accurate temperatures, this may not be your target.
I am using a 1500 watt heater, this thermostat claims "Can control up to 5,280 Watts". I will say, with your full knowledge of the following, it may be able to do just that.
With my 1500 watt heater, I found the box where the contacts are, will heat up. This affects the thermal temperature control. The thermal sensor feels that heat from the switch and will falsely open or shut down the heater even though it has not attained the proper temperature.
My test was done with NO ELECTRICAL BOX, the thermostat was propped up with the ventilation slots open to the air. The rear of the thermostat was open to the air....
The highest I could get the room temp was 73, this is with the thermostat set at MAX TEMPERATURE.
If you try to control a heater at the recommended 5280 watts, the heat in the thermostat will be higher and the temperature level will be lower.
--- The only way you will be able to get around this heat problem would be to add a relay or a solid state relay and have the thermostat control the relay. This takes the load off of the thermostat, which takes the heat away and allows the thermostat to be more accurate.
-- In conclusion, this thermostat will work, it won''t be accurate and it does get warm to hot. My use was with the thermostat NOT installed in a enclosure so it had free air for cooling and was still affected by the warmth generated inside the thermostat switch.
Max temp I could attain was 73 with the thermostat dialed at full or max heat. The thermostat was switching off as you can hear the click so the switch was being thermally actuated. This max temperature varies so the heat was definately affecting the thermal operation. You could feel the heat on the switch case which confirmed the excess heat.
-- I STRONGLY RECOMMEND if you use this thermostat, to install it in a recommended metal box/case. Do not install above a heater as the warm air from the heater will affect its ability to sense ambient air temps. I am lead to believe that this thermostat is meant to be installed in a baseboard heater unit. The Temperature at floor level is cooler and this difference in air temp may allow more approving results.
Also, if you are installing this unit in a cramped/tight enclosure, you may have to arrange the wires so there is no tension on the thermo box connections. I had this in one position and it wouldn''t work until I moved the wires. Note that the wires are not attached by screws, more like a spot weld so the connection is not likely to fail. If you have an operation problem, check the thermostat installation.
I have done further research on this thermostat and now have been able to get good temperature control.
The weakness of this thermostat is the temperature control device. It will not run the current (power) through without creating heat. When it creates heat, if makes the thermo device open prematurely.
Yes, I have a fix.
First, the thermostat is NOT a 220/240v thermostat unless you add a relay, where the 220/240v power is switched through the relay.
I use my thermostat to run a 1500 watt heater. The thermostat is hugely unable to perform this task by itself as explained above.
The answer is to take the load/current OFF OF THE THERMOSTAT. You can use a relay to do this, I used a solid state relay, about $8 from MPJA, an electronics parts reseller. With all the load on the SSRelay, the thermostat no longer has any load across the thermo unit to make it prematurely heat up and open the contacts. With the load now switched across the SS RELAY, I am getting more heat out of the heater, it is staying on until the room actually warms up then switches off as required.
In short, unless you are using this thermostat for a very light load, it will not work properly for large loads UNLESS you add a relay or solid state relay to handle the heavy current from your heater device.
With the result I saw with the addition of the SS Relay, I STRONGLY suggest this addition to this particular thermostat.
I am not associated with the seller and did not receive any monies or product for my review