T822K, T822L, T834N, T834L, T827K,
and T8034N Range Stops
APPLICATION
Use the 50019661-001 range stops with the T822K, T822L,
T834N, T834L, T27K, and T8034N thermostats to limit the
minimum and maximum temperature settings.
The 50019661-001 consists of a range stop plate, two
range stop adjustment screws (#2-56 x 7/32 Phillips pan
head screws), and an upper range stop screw (#4-40 x 5/16
Phillips pan head screw). See Fig. 1.
RANGE STOP
RANGE STOP
ADJUSTMENT
SCREWS
Fig. 1. Range stop and screws.
RANGE STOP
SLOT
LEFT RANGE
STOP SUPPORT
TEMPERATURE
ADJUSTMENT
LEVER
Fig. 2. Thermostat with front cover removed.
UPPER RANGE
STOP SCREW
M23427
RIGHT RANGE
STOP SUPPORT
M23428
INSTALLATION INSTRUCTIONS
INSTALLATION
1. Center the temperature adjustment lever at the
middle of the desired upper and lower temperature
range.
2. Remove the front cover.
3. Insert slot of range stop under tab on left range stop
support. See Fig. 2.
4. Position right side of range stop against right range
stop support. See Fig. 2.
5. Insert and tighten upper range stop screw into upper
range stop support
TIGHTEN SCREW AT
LOW TEMPERATURE
LIMIT
Fig. 3. Aligning range stop with thermostat.
6. Loosen range stop adjustment screws. Position
screws against temperature adjustment lever.
7. Temporarily replace front cover.
8. Move the temperature adjustment lever to the
desired high temperature limit.
9. Move the temperature adjustment lever to the
desired low temperature limit.
10. Remove front cover.
11. Tighten range stop adjustment screws. See Fig. 3.
12. Install front cover. Set desired temperature setting.
TIGHTEN SCREW AT
HIGH TEMPERATURE
LIMIT
M23429
69-1967EFS