will this work with a 750 mV system?

I had this thermostat installed in one of my rental units. It worked great for about 1 year. My renter complained of the heat not coming on at the agreed upon temperature set point (72 degrees F). My renter would increase the set point and the heater would then come on. After investigating the situation, I discovered smoke had contaminated the thermostat contacts. After cleaning the contacts the thermostat would function as designed until smoke contaminated the contacts again. I installed a thermostat having sealed contacts which solved the problem. So, bottom line, yes this thermostat will work on a 750 mv system. However, if this thermostat operates in a contaminated environment be prepared to clean the contacts periodically.

I have 3 wires,This thermostat has only connections for 2 wires.Can I still use it?

This will depend on your situation. If you are just trying to use it for turning on and off a heat source, then it should work just fine. Follow the instructions carefully. Even though you have 3 wires, I'm guessing one of the 3 is not being used. Follow the wire to the other end and see if all 3 wires are hooked up. If there are only 2 hooked up, those same 2 wires will be what you use at the stat. The stat is just like a light switch, just lower voltage. Power will come from your transformer, through the stat, then to the device control you want to turn on. If you have a unique situation and need more help, you can take some pictures and describe your application and send them to me at samoore@parker.com and I will do my best to help you out.

is this a 2 wire connection?

yes 2 wire, but be careful...no off switch even though picture may show one.

Where to set adjustment lever for a lp gas fireplace? i tried 0.4 (factory setting / gas <90% eff) and fireplace had lower flame than before.

this unit only activates a contact that is activating buy the temp that the setting is placed at, it does not control the amount of gas at your fireplace, or how the flame is burning

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Q: Where to set adjustment lever for a lp gas fireplace? i tried 0.4 (factory setting / gas <90% eff) and fireplace had lower flame than before.

this unit only activates a contact that is activating buy the temp that the setting is placed at, it does not control the amount of gas at your fireplace, or how the flame is burning

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🔥 Stay cozy, stay classic — the thermostat that means business!

ECO FRIENDLY SAFE - Mercury-free design keeps your home and environment safe
COMPACT LIGHTWEIGHT - Slim 7.92 cm square profile, only 68g for easy wall mounting
CLASSIC ALMOND AESTHETIC - Blends seamlessly with modern and traditional interiors
EFFORTLESS CLIMATE CONTROL - Manual dial simplicity for zero hassle operation
RELIABLE HEAT ONLY PERFORMANCE - Optimized for consistent heating with bimetal temperature sensing

The Honeywell CT30A1005 is a compact, manual heat-only thermostat featuring a mercury-free bimetal sensor for reliable temperature control. Designed in a stylish almond finish with a decorative backplate, it operates on 120 volts and requires no batteries, making it a simple, eco-conscious choice for both residential and commercial heating needs.

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Manufacturer	Honeywell
Part Number	CT30A1005
Product Dimensions	7.92 x 2.24 x 7.92 cm; 68.04 g
Item model number	CT30A1005/N
Size	0.6
Colour	Almond
Style	Classic
Material	bimetal
Shape	Square
Voltage	120 Volts
Item Package Quantity	1
Number of Pieces	1
Type of Bulb	LED
Display style	Manual
Plug profile	Wall Mount
Special Features	Programmable
Usage	Commercial/Residential
Included Components	Thermostat, Decorative Backplate
Batteries included?	No
Batteries Required?	No
Item Weight	68 g

Honeywell CT30A1005 Standard Manual Economy Thermostat, Almond, 0.6

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