Braeburn 505 Manual

Braeburn Termostat 505

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Side 1/3

MODELS

500 1 HEAT/1 COOL

505 HEAT ONLY

507 COOL ONLY

USER MANUAL

Builder Series

Mercury-Free Mechanical Thermostats

with the Exclusive Megaswitch

™

Magnetic Switch Technology

Compatible with low voltage, single stage gas, oil or electric heating or

cooling systems. Model 500 can be used with single stage heat pumps.

Models 500 & 505 can also be used on 250mv to 750mv millivolt heat only

systems. Do not use on applications with voltages above 30 Volts AC.

READ ALL INSTRUCTIONS BEFORE PROCEEDING

WARNING!

Important Safety

Information

• Always turn off power to air conditioning or heating system prior to installing, removing cleaning or servicing thermostat.

• Read this manual thoroughly prior to installing or operating this thermostat.

• This thermostat is designed for use with 24 Volt-AC low voltage single stage gas, oil or electric heating or cooling systems,

including single stage heat pumps (Model 500 only). This thermostat can also be used on 250mv to 750mv millivolt heating

only systems (Models 500 and 505).

• Do not use this thermostat on applications with voltage above 30 Volts AC.

• The system must have 24 Volt AC present for proper system operation and control.

• Wiring must conform to all building codes and ordinances as required by local and national code authorities

having jurisdiction.

• Do not short (or jumper) across terminals on the gas valve or at the heating or cooling system control board to test the

thermostat installation. This could damage the thermostat and void the warranty.

• Do not select mode of operation if the outside temperature is below 50° F (10° C). This could possibly damage the COOL

controlled cooling system and may cause personal injury.

• This thermostat should only be used as described in this manual. Any other use is not recommended and will void warranty.

SPE CI FICATIO NS

• Electrical Rating: 24 Volt AC (18-30 Volt AC), 250 – 750 millivolts

• Heat Anticipation: 0.15 to 1.2 amps.

• Temperature Range: 50° - 90° F (10° - 32° C)

Old Terminal New Terminal Terminal Description

V or Rc Rc Cooling Transformer

M, 4, Rh or R Rh Heating Transformer

O O Reversing Valve (Cooling)

B B Reversing Valve (Heating)

Y Y Cooling or Compressor for HP system

H, W or 4 W Heating Control

G or F G Fan Control

INS TALLATIO N

1. Always turn off power to the air conditioning or heating system prior to removing existing thermostat.

2. Remove the cover of old thermostat and locate wire terminals. Do not remove wires from terminals yet.

3. Label wires prior to removal from terminals. Use chart below to determine new terminal designations for new thermostat.

2.1

Replacing Existing Thermostat

2.2

Installing Your New Thermostat

NOTE: This thermostat is designed for use with a 24 Volt AC low voltage single stage gas, oil or electric heating or cooling

systems, including single stage heat pumps (Model 500 only). This thermostat can also be used on 250mv to 750mv millivolt

heating only systems (Models 500 and 505). Do not use this thermostat on applications with voltages above 30 Volts AC.

1. Always turn off power to the air conditioning or heating system prior to installing new thermostat.

2. OFF Place system lever to position, and fan control lever to position.AUTO

3. Remove the front cover of the thermostat by ﬁrmly pulling it away from the base.

4. Place thermostat base against wall in the desired thermostat location and guide thermostat wires through

vertical slot in base.

5. Mark placement of mounting holes as appropriate and drill using a 3/16” drill bit.

6. Gently tap supplied plastic anchors into the holes in the wall.

7. Place the thermostat base against the wall in the desired location making sure the mounting holes are aligned as

appropriate and the thermostat wires are properly inserted through the slotted opening in the base.

NOTE: If installing this thermostat in a new installation, be sure to locate the thermostat 4 to 5 feet above the ﬂoor in

accordance with applicable building codes. Be sure to install thermostat in a location that provides good airﬂow

characteristics and avoid areas behind doors, near corners, air vents, direct sunlight or near any heat generating device.

Installation in any of these areas could impact thermostat performance.

8. Fasten the base to wall using supplied screws.

9. Connect wires to proper terminal screws using new terminal designations (see section of manual). Wiring Diagrams

10. Make sure all of the wire connections are secure and are not touching any other terminal to prevent electrical shorts

and potential damage to the thermostat.

11. Locate the internal fan option jumper, (Gas) or (Elec) on the base (Model 500 only). This jumper controls the HG HE

heating system fan delay. Insert the jumper over the pins labeled for gas or oil ﬁred systems. This will allow the HG

furnace to run for a few seconds before initiating the fan. Insert the jumper over the pins labeled for electric HE

systems with electric furnace elements that require the fan to come on immediately and for heat pump systems.

12. Attach front cover of thermostat to base of the thermostat by pressing it onto the four corner posts of base.

13. Restore system power so you can test installation.

4. After labeling and removing all wires from terminals, unscrew the existing thermostat mounting base from wall. Be sure

to secure wires to prevent them from slipping back into the hole in the wall.

2.3

Setting the Heat Anticipator

NOTE: Some heating systems require a longer or shorter “ON/OFF” period to maintain comfort.

Set the heat anticipator as speciﬁed in one of the following conditions:

• For replacement installations match the anticipator setting with that of the thermostat being replaced.

• For new installations match the current draw (amperage) of the heating control or relay. To do this check the rating

label on the control within the heating system. If the label cannot be found, determine circuit amperage by:

INSTALLATION

cont.

WARNING: Thermostat will not function if

anticipator handle covers PC board cutout.

1. HEAT Place system lever in the position.

2. Adjust temperature lever until indicator is at least 3 degrees above the room temperature. The heating system should start

within several seconds. Fan may not turn on immediately due to the heating system built-in fan delay.

3. OFF Place system lever in the position. The heating system should stop within several seconds.

The adjustable heat anticipator will burn out if 25 Volts are applied directly to the thermostat by shorting out the gas valve

or primary control during testing or by improper wiring.

WARNING!

TESTING YOUR NEW THERMOSTAT

WARNING!

Read BEFORE Testing

• Do not short (or jumper) across terminals on the gas valve or at the heating or cooling system control board to test

the thermostat installation. This could damage the thermostat and void the warranty.

• Do not select mode of operation if the outside temperature is below 50° F (10° C). This could possibly COOL

damage the controlled cooling system and may cause personal injury.

1.0

1. OFF Slide the system lever to , or set temperature to lowest setting

so that the contacts are open. Make sure system power is

turned back on.

2. Set an AC ammeter to the 0 to 1 amp. range. Place the meter

probes on W and Rh terminals. The heating valve or relay will turn

“ON” and a reading will appear on the meter. Note this reading.

Remove the probes from the terminals.

3. Set the heat anticipator arrow to this meter reading. This is the

normal setting.

4. The anticipator adjustment must be made so that the thermostat

is in “balance” with the rest of the system. It will determine how

often the heating system turns on and off.

NOTE: If installing on a millivolt heat only system, set the

anticipator to the maximum setting of 1.2.

NOTE: Allow the heating system to operate for a full day or more.

Too frequent cycling of the heating system can result in lower life

expectancy for the heating system. If adjustments are necessary,

make them in 0.1 amp increments at a time. Move the anticipator

lever in direction of arrow to cycle less often.

SYMPTOM POTENTIAL SOLUTION

Thermostat does not turn

on heating or cooling

system.

Thermostat turns on

heating instead of cooling,

or cooling instead of

heating.

Check thermostat wiring to be sure that the heating and cooling stages are connected to the

correct terminals. See and sections of this manual.Installation Wiring Diagrams

Thermostat turns heating

system on too often or not

often enough.

Increase or decrease anticipator setting as appropriate to provide the desired performance

level. See section of this manual.Setting Heat Anticipator

Fan continues to run all

the time whether the

system is on or off.

Check that the fan control lever is in the position. This will allow the fan to run only AUTO

when the heating or cooling system is turned on and running.

Check thermostat wiring to make sure that the fan control wiring is connected to the correct

terminal. See and sections of this manual.Installation Wiring Diagrams

Check to see if system lever is in the position. This indicates that the system is turned OFF

OFF HEAT COOL at the thermostat. Move the system lever to either the or position.

Heating or cooling system may be malfunctioning. Call a professional service technician

immediately to verify system operation.

TESTING YOUR NEW THERMOSTAT

cont.

4. COOL Place system lever in the position.

5. Adjust temperature lever until indicator is at least 3 degrees lower than room temperature. The cooling system should

start within several seconds.

6. OFF Place system lever in the position. The cooling system should stop within several seconds.

7. ON Place fan lever in the position. The system blower should start.

8. AUTO Place fan lever in the position. The system blower should stop.

For heat pumps, place system lever back in the DO NOT HEAT position. Quick repetitive cycles of the system compressor can

lead to damage and shorten its life expectancy.

DO NOT COOL place the system lever back in the position. Quick repetitive cycles of the cooling system compressor can lead

to damage and shorten its life expectancy.

WARNING!

1. HEAT COOL Set the system lever to either or .

2. Adjust the temperature lever to the desired setpoint temperature.

USING YOUR NEW THERMOSTAT

TROUBLESHOOTING

Produkt Specifikationer

Mærke:	Braeburn
Kategori:	Termostat
Model:	505

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