Infloor Thermostat 29050 V2 User Manual

Owner’s manual, Installation, Cautions to follow

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Owner’s Manual

Infloor Sales & Service

Programmable Thermostat

29050 Version 2

The Infloor Sales & Service 29050 is designed to operate either a 120 VAC or

240 VAC resistance floor heating system. It comes with an easy setup wizard, a

typical program ready to go, and a GFCI inside to meet safety needs.
Please follow this manual for installation and operating instructions. Leave these

instructions with the homeowner.

Installation

Cautions to Follow

You are required to thoroughly read all installation instructions and product

safety information before beginning the installation of this product. FAILURE

TO COMPLY WITH PROPER INSTALLATION AND MAINTENANCE INSTRUCTIONS

COULD RESULT IN DAMAGE TO THE SYSTEM OR ELECTRIC SHOCK CAUSING

PROPERTY DAMAGE, PERSONAL INJURY AND/OR DEATH. Infloor is not

responsible for damages resulting from improper installation and/or

maintenance.
Local building or plumbing codes may require modifications to the information

provided. You are required to consult the local building and plumbing codes

prior to installation. If this information is not consistent with local building or

plumbing codes, the local codes should be followed.

CAUTION: This product requires electrical wiring. It is recommended that

this product is installed by a qualified technician. Local codes may require

this product be installed by an electrician. Prior to installation, consult

your local codes for what is acceptable in your area. To the extent this

information is not consistent with local codes, the local codes should be

followed.

ALWAYS: Wire all circuits as Class 1, Electric Light and Power Circuits

ALWAYS: Wire all circuits with insulation rated 600V minimum.

ALWAYS: Mount this control only to a grounded metallic box or a nonmetallic

box.

ALWAYS: Use power supply wires suitable for at least 90°C.

WARNING: High voltage – disconnect power supply before servicing.
WARNING: The GFCI (ground-fault circuit interrupter) in this thermostat

control does not protect against shock if both bare conductors are touched

at the same time.

WARNING: Do not exceed 15 amps on this thermostat control. Doing so will

cause risk of fire hazard and damage.

CAUTION: Make sure the house power supply voltage matches the voltage

rating of the floor heating system. Do not apply 240 VAC to a 120 VAC rated

system. Connecting the wrong voltage may cause overheating and damage

to the system, the control, floor coverings, etc.

Parts Needed

Contents of package:

Unpack the thermostat control and make sure everything is in good condition.

Do not use a damaged control or part. The package comes with these items:
(1) Thermostat

(1) Thermostat floor sensor

(4) Wire nuts (Marettes®)

(2) Mounting screws

(1) Screwdriver

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Tools and supplies needed:

- No. 2 Phillips screwdriver

- Hole saw (if installing in an existing wall)

- Wire strippers, wire cutters, and other electrical tools

- Electrical wall box (plastic or metal)*

*NOTE: A single-gang extra-deep box allows sufficient space to connect 1 or 2

heating mats or cables. For 3 heating mats or cables, a 4-inch square extra-deep

electrical box with a single-gang “mud ring” is necessary. Alternately, a junction

box may be installed to connect multiple heating mats or cables, then run

power supply wire from the junction box to the control electrical box. See the

Installation Instructions provided with the floor heating system for more details.

Locating the Control

Find a suitable location for the control. It is designed for indoor dry location only.

It may be placed on an insulated or uninsulated wall, preferably an interior wall

to avoid overheating from outside sun heat. Keep it away from all water sources

such as sinks, showers, and bathtubs as well as heat sources such ashot-water

piping, heat ducting, wall-mount lighting, and direct sunlight. Locate it at a

suitable height, normally about 4-1/2’ to 5’ (1.4 m to 1.5 m) from the floor.

Mounting the Electrical Box

When mounting on an existing wall, cut the opening for the electrical box for the

control. To make it easier to pull the wiring, wait to install the electrical box until

after all wiring is drawn into this opening.
When mounting on an open wall, secure the electrical box for the control to the

wall stud.
When mounting on an open wall, conduit from the electrical box to the floor is

recommended (check local codes for requirements) for additional protection.

Install one conduit for the floor sensor. Install another conduit for the floor

heating system power leads. Refer to the Installation Instructions supplied with

the floor heating system for additional installation details.

Wiring

CAUTION: Turn off power at the circuit breaker before doing any

electrical work.

House Wiring

A qualified person should run a dedicated circuit from the main circuit breaker

panel to the control location. If a dedicated circuit is not possible, it is acceptable

to tap into an existing circuit. However, there must be enough capacity to handle

the load (amps) of the floor heating system being installed and any possible

appliance, such as a hair dryer or vacuum cleaner. Avoid circuits that have

ballasted lighting, motors, exhaust fans, or hot tub pumps due to

possible interference.
The circuit breaker should be rated 20 amps for total circuit loads up to 15 amps.

A 15 amp circuit breaker may be used for total circuit loads up to 12 amps. A

GFCI (ground-fault circuit interrupter) or AFCI (arc-fault circuit interrupter) type

circuit breaker may be used if desired, but is not necessary.

WARNING: Do not exceed 15 amps on this thermostat control. Doing so will

cause risk of fire hazard and damage.

Pull power supply wiring to the control location. Leave about 6 to 8 inches (15

to 20 cm) of wire for connections later. This wiring should be size 12 or 14 AWG

following appropriate local code requirements.

Floor Sensor

Pull the floor sensor wire up the wall (or conduit) to the control location, leaving

about 6 inches (15 cm) of wire for connection later. The sensor wire may be cut

shorter if desired, but do not cut it shorter until the sensor is fully installed

(see below).
Note: If the sensor wire is not long enough to reach the control location, it may

be extended an additional 15 feet (4.5 m) using minimum 20 AWG 2-conductor

unshielded wire, or an additional 50 feet (15 m) using shielded wire. When

using shielded wire, the “shield” must be connected to the lower sensor

terminal, nearest to Bus A. A junction box may be required by local code for the

connection to this extension wire.
After the floor heating system is completely installed according to its

instructions, secure the thick sensor tip to the floor. It must be located halfway

between heating wires and at least 1 foot into the heating area. Use hot-glue to

secure the sensor tip and wire in place. Do not cross over a heating wire. Avoid

placing it in an area where heating wires are spaced further apart than the rest

of the floor, like a large gap between mats or cables. Avoid placing it in an area

where a heat duct or recessed light will cause improper measurements. Try to

avoid locating it where future items such as a clothes hamper or similar could

trap heat and cause improper measurement.
Finish securing the sensor wire along the floor and up the wall. At the control

location, cut the sensor wire shorter if needed, leaving at least 6 to 8 inches (15

to 20 cm) of wire for connections later. Re-strip the sensor wire ends 1/8” to

3/16” (3 mm to 4.5 mm) long. If the ends are stripped longer than this they may

short-circuit resulting in an Err2 code.

Mat or Cable Power Leads

Pull the power lead wires from the floor heating system into the control

location. Leave about 6 to 8 inches (15 to 20 cm) of wire for connections.

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