Electronic Room Thermostats
CTE–5101, 5102, 5103, 5104, 5105
Installation Guide
Required Tools
• digital voltmeter
• small phillips & flat-blade screwdrivers
• pliers
• 1/16" hex wrench
• key hole saw
Mounting
CTE–5100 series thermostats may be mounted horizontally or vertically to a standard 2" x 4" (51 x 102)
handy box using a HMO-5024/26 or 5030/5031 backplate, or directly to a hollow wall using drywall bracket
HMO-5023. Mount thermostats on walls unaffected by sunlight or drafts to ensure accurate average
temperature sensing. All CTE–5100 series thermostats require a scale plate and a cover which must be
ordered separately.
Electrical Box Mounting
1. Install, but DO NOT TIGHTEN, the HMO-5024/26 or 5030/5031
backplate to a handy box using the two 6-32 screws (included).
2. Adjust and level the backplate using the slotted mounting hole.
3. Tighten the two mounting screws.
4. Pull all thermostat wires and cable through the backplate and
decorative trim plate opening (included with HMO-5024/5026 or
5030/5031). Be careful not to damage the trim plate while wiring.
5. Connect the thermostat’s wires according to it’s particular
application. Refer to project drawing or the wiring chart.
6. Position the trim plate between the backplate and the thermostat
(cover removed).
7. Align the mounting holes and secure the assembly with the two
6-32 x 2" self-tapping screws (included).
Hollow Wall Mounting
Thermostats may be mounted on a hollow wall up to 5/8" thick using the HMO–5023 Drywall Mounting Kit.
1. Using the template, cut a 1–1/2" x 2–11/16" opening in the drywall.
2. Loosely mount the HMO–5023 bracket to the thermostat (cover removed) using the two 6-32 x 2" screws.
HMO-5024/26 or 5030/5031
Back Plate
HMO–5023 Drywall Mounting Kit
3. Pull all thermostat wires or cable through the bracket’s ’wiring/cable access hole.
4. Connect the thermostat wires according to it’s particular application. Refer to the project drawing or the
wiring chart.
5. Insert bracket diagonally, through the wall opening, center and tighten screws.
Mounting Continued
Setpoint Stops
Setpoints can be locked, or limited, using setpoint stops. Each HFO–0027
Setpoint Stop Strip (accessory sold separately) contains four stops.
1. Break a stop from the strip by gently folding on the seam with pliers.
2. Insert a stop into the slider track on one or both sides of the slider.
3. Repeat for second slider.
Scale Plates (required)
1. Install scale plate under the setpoint indicators.
2. Align mounting holes.
3. Insert the two retaining pins (HPO–0046, supplied) into the holes.
4. Twist pins 1/4 turn to firmly seat.
Covers
A symbol-coded label strip is included with the window style covers for
setpoint indication.
1. Remove the window by applying light pressure on its underside and
flexing upward.
2. Peel-off correct identity label from the strip of labels provided.
3. Position the label on the covers’ recessed area.
4. Snap window back in place.
5. Slide cover onto base.
6. Locate the set screw on each of the thermostats short sides.
7. Using a 1/16" hex/key wrench, turn set screws outward CCW until the
cover is secure. Turn set screws CW to remove cover.
Removeable thumb adjusters. See NOTE
Setpoint S tops
NOTE: When using a blank cover, remove the finger pads on the setpoint sliders. Hold the slider in
place, insert a small flatblade screwdriver into the slot in the metal slider. Twist the screwdriver
slightly to pop the pad off.
Wiring
Refer to the project plans, as built drawings or table
on the oposite pages for more information.