[4]

Thermostat Calibration

[3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

Groundhog

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
Jan 20, 2016
Messages
937
Likes
1,081
#1
I have a King KBP2406 electric heater in my shop (220V, 57oo watt). When the thermostat is set to 40° (the lowest position) the temperature in the shop is more like 50-52°. I would like to keep the shop colder (above freezing) for economy when it is unoccupied.
According to King's parts data the thermostat is a 3 wire liquid filled bulb type.
To save me from having to take it down and look for myself, does anyone know it there is a provision for calibration or adjustment of this thermostat?
 

tq60

Registered
Registered
Joined
Jan 11, 2014
Messages
636
Likes
373
#2
Simply turn it until it switches and measure the ambient temp where it is.

Still air can hold heat a bit and if is a mercury switch then if not level it can be off and most can be adjusted either via factory directions and screws or pliers or shifting from level.

Before messing with it place a thermometer next to the thermostat would see what the area is.

Sent from my SAMSUNG-SGH-I337Z using Tapatalk
 

Fitter Bill

H-M Supporter - Sustaining Member
H-M Platinum Supporter ($50)
Joined
Jun 17, 2012
Messages
49
Likes
25
#3
Had same problem with my shop. I had a Sears mercury switch t-stat, pulled the cover off to see mercury switch, mounted it with one screw, saw which direction the switch had to go. Took a guess and tightened it down. Took about 3 tries to get it at 35 degrees. Put in another screw, good to go. I used it for 6 or 7 years. At least half of everyone that came to my shop said, "Did you know your thermostat crooked? (about 20 degrees off of level) Aw crap I must have bumped it.... Last year my neighbor said he couldn't stand it any longer and gave me an electronic model that went to 40 degrees. Long story short, it will work fine if mounted out of plumb..
Bill
 

Groundhog

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
Jan 20, 2016
Messages
937
Likes
1,081
#4
Bill,
A crooked thermostat would drive me crazy - I'm too OCD! Anyway. this one is not a mercury switch (at least by the brochure) but has a bulb like a thermocouple and it is built into the heater. But thanks!!

TQ,
I'm sure of the temperature via infrared gun all over the shop (including at the thermostat).
 

KBeitz

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
Apr 17, 2018
Messages
292
Likes
158
#5
You don't need to crook the whole thermostat ... Just the spring the mercury switch is on...
 

Groundhog

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
Jan 20, 2016
Messages
937
Likes
1,081
#6
Repeat - it is NOT a mercury switch. It is in no way mechanical - so repositioning it has no effect. There is no spring, lever. tiny gear or cam because it is not mechanical. Nothing to tinker with.

But thank you all for the input.
 
[6]
[5] [7]
Top