Aprilaire 8346 Bedienungsanleitung

MODEL 8344 HEAT/COOL NON-PROGRAMMABLE

MODEL 8346 HEAT PUMP NON-PROGRAMMABLE

MODEL 8348 HEAT/COOL MULTI-STAGE NON-PROGRAMMABLE

MODEL 8363 HEAT/COOL 5/2 DAY PROGRAMMABLE

MODEL 8365 HEAT PUMP 5/2 DAY PROGRAMMABLE

MODEL 8366 HEAT/COOL MULTI-STAGE 5/2 DAY PROGRAMMABLE

Installation Manual

Electronic

Thermostats

SPECIFICATIONS

Comfort Range 60°F – 80°F

Comfort Control Accuracy ± 1°F (applies to settings within Comfort Range)

Operating Range132°F – 99°F

Maximum Control Accuracy ± 2°F

Temperature Setting (Control) Range 50°F – 90°F heating; 60°F – 90°F cooling

Switched Load Voltage 18 – 30 volts

Maximum Operating Current 1.0 Amp

Maximum Surge Current 3.0 Amps

Low Limit Temperature241°F ± 9°F

High Limit Temperature3100°F ± 9°F

1Operating Range is the temperature range in which the thermostat will accurately

display temperature.

2Low Limit Temperature is the temperature setting of an internal, temperature-controlled

mechanical switch in a circuit between RH and W for Models 8344, 8348, 8363 and 8366,

and between R and W2 for Models 8346 and 8365. This device is intended to prevent

freezing of water pipes should battery replacement be neglected.

3High Limit Temperature is the setting of an internal, temperature-controlled mechanical

switch in the circuit between the RH and the W terminal (W and W2 terminals for Model

8348 and 8366). This device will limit the room temperature should the contacts of the

heat relay remain closed. Applies to Models 8344, 8348, 8363 and 8366 only.

WARNINGS

120 volts may cause serious injury from electrical shock. Disconnect

electrical power to the furnace & air conditioner before starting

installation. This thermostat is not a 120 volt (line voltage) device.

Improper installation may cause serious injury from electrical shock. This

product must be installed by a qualified heating & air conditioning contractor

in accordance with NEC Standards and applicable local and state codes.

Mercury is toxic and may be hazardous to your health. Any replaced

thermostats containing mercury must be disposed of properly. Contact

local authorities for disposal information.

THERMOSTAT INSTALLATION INSTRUCTIONS

Step1. Choose a location to mount the thermostat

• Approximately 5 feet off the floor (refer to local codes for compliance with

the Americans with Disabilities Act).

• On an interior wall where the temperature is most representative of the

zone being controlled by the thermostat.

• At least 18 inches away from an outside wall.

DO NOT MOUNT THERMOSTAT…

• Behind doors, in corners or other dead air spaces.

• In direct sunlight, near lamps

or other sources of heat.

• On an outside wall or any wall

exposed to an unconditioned

space (i.e. garage).

• In the airflow path of a supply

• On a wall where concealed

pipes or ductwork will affect

the thermostat temperature

accuracy.

Step 2. Disassemble

the thermostat

• Flip open the cover.

• Remove the face of the

thermostat – no tools required.

Pull Here to Open

Disassemble the Thermostat

Step 3. Mount the thermostat on the wall

There are two sets of mounting holes – one set for use when mounting to a

junction box, another set for direct wall mounting.

IMPORTANT! TURN OFF POWER AT THE HVAC EQUIPMENT BEFORE

PROCEEDING WITH THERMOSTAT INSTALLATION!

Mounting the thermostat directly to the wall (without junction box)

1. Place the thermostat wire opening over the wall opening. If replacing a

thermostat, place the thermostat to cover the old thermostat silhouette.

The base of the thermostat is raised to allow for wire routing behind the

thermostat.

2. Level the thermostat (for appearance only) and mark the mounting hole

locations.

3. Drill a 3/16” dia. hole at the marked locations and install drywall anchors

(included). Drywall anchors should be used unless installing on paneling

or other hard surfaces. Anchors should be flush with the wall surface.

4. Secure the thermostat to the wall using two (2), #8 x 1-1/2” long pan head

screws (included).

Mounting the Thermostat Directly to the Wall (without Junction Box)

Mounting the thermostat to a junction box

1. Install the top j-box screw (not included), until the head is approximately

1/8” from the surface of the wall.

2. Slide the thermostat on to the top screw.

3. Install the bottom screw (not included) to finish the installation.

Step 4. Set the ELEC/GAS switch to the proper position

(Models 8344, 8348,

8363 and 8366 only)

Setting the switch to

ELEC will cause the

G terminal to energize

with the W terminal

on a call for heat.

Only the W terminal

will energize on a

heat call in the GAS

position.

Mounting the Thermostat to a Junction Box

GAS

ELEC

Set ELEC/GAS switch

Set the O/B reversing valve jumper in the proper position

(Models 8346 and 8365 only)

The thermostat comes with an O/B terminal which can be configured to be

an ‘O’ terminal (for most heat pumps) or to be a ‘B’ terminal. Configure as an

‘O’ terminal if the heat pump reversing valve has heating as the default

position, configure as a ‘B’ terminal if the reversing valve has cooling as the

default position.

CONSULT WITH THE HEAT PUMP MANUFACTURER TO DETERMINE WHICH

CONFIGURATION IS NEEDED.

To configure as an “O” Terminal,

keep the pin jumper in this position.

To configure as an “B” Terminal,

move the pin jumper to this position.

Remove the slide switch caps

for easier access.

O/B Reversing Valve Pin Jumper Position

APRILAIRE MODEL 8344

OR 8363 THERMOSTAT

FAN

RELAY

1ST

STAGE

HEAT

FURNACE

1ST STAGE COOL

120

VAC

1ST

STG

COOL

COOLING EQUIPMENT

HI opens at 100°F±9°F

LO closes at 41°F±9°F

AUTO

GAS

ELEC

Step 5. Wire the thermostat

IMPORTANT! ENSURE THE POWER AT THE HVAC EQUIPMENT IS OFF.

1. Make sure the fan switch is set to Auto and the Mode switch is set to Off.

2. Strip 2” of cable insulation.

3. Strip 1/4” of insulation from each wire. Do not cut into the wire when

stripping insulation, as this can lead to eventual control failure.

4. Secure the wires to the thermostat terminal strip according to the wiring

diagram for the model being installed (See Diagrams 1, 2 & 3). Use a slotted

screw driver with a 1/8” tip (terminal screw driver). Use color coding

where possible (i.e. red wire to R terminal, white wire to W terminal, etc.).

5. Slide excess cable back into the wire entry wall opening and fill the hole

with insulation. Failure to seal the hole can cause drafts to enter the

thermostat and effect temperature sensing accuracy.

Diagram 1 – Model 8344 or 8363 Thermostat Wiring

FAN

RELAY

2ND

STAGE

HEAT

1ST

STAGE

HEAT

HEAT/BLOWER EQUIPMENT

1ST STAGE

COOL

2ND STAGE

COOL

120

VAC

1ST

STG

COOL

2ND

STG

COOL

COOLING EQUIPMENT

APRILAIRE MODEL 8348

OR 8366 THERMOSTAT

HI opens at 100°F±9°F

LO closes at 41°F±9°F

GAS

ELEC

AUTO

Diagram 2 – Model 8348 or 8366 Thermostat Wiring

Step 6. Install supplied batteries

Install two new AA alkaline batteries (included). Do not mix old and new

batteries

Step 7. Reassemble the thermostat

No tools required – simply snap the thermostat face back on the thermostat.

O/B

1ST

STG

COMP.

REV

VALVE

DEFROST

SERVICE

OUTDOOR HEAT PUMP UNIT

FAN

RELAY

AUX.

HEAT

HEAT/BLOWER EQUIPMENT

1ST STAGE COMPRESSOR

120

VAC

VAC R

O/B

COOL

HEAT

AUTO

CHECKAUX

APRILAIRE MODEL 8346

OR 8365 THERMOSTAT

RED

BLK

WHT

YLW

ORG

BLU

ORG

YLW

WHT

GRN

BLK

RED

ORG

RED

BLK

GRN

YLW

WHT

BLU

RED

BLU

BLK

WHT

ORG

YLW

Diagram 3 – Model 8346 or 8365 Thermostat Wiring

NOTES:

1. Wire colors shown

for reference only.

2. Common (C)

connection required

only for thermostat

LED operation.

SEE NOTE 2

Step 8. Perform check-out

1. Slide the Fan switch to the On position.

The blower should come on. Return the Fan switch

to the Auto position.

2. Slide the Mode switch to the Heat position.

3. Use the ADJUST – Up button to raise the

temperature 2° - 3° above the current room temperature. “HEAT” on the

display will begin to flash and the heating equipment should start. It may

take a moment for the heating equipment to initiate the heating cycle. If

the blower turns on immediately and this is unexpected, make sure the

GAS/ELEC switch on the thermostat is set correctly (see Step 4, MODELS

8344, 8348, 8363 & 8366 ONLY).

MODELS 8346 & 8365 – If cold air is coming out of the registers, the

reversing valve terminal may need to be configured – see Step 4.

4. MODELS 8348 & 8366 ONLY – Raise the temperature an additional 2°-3°

and confirm that the second stage of heat (W2) comes on after a 2 minute

1st stage minimum on-time.

MODELS 8346 & 8365 ONLY – Raise the temperature an additional 2°-3° and

confirm that the second stage of heat (W2) comes on in four (4) minutes.

The green AUX LED located on top of the thermostat will light whenever

the W2 terminal is energized.

CAUTION

The following procedure will turn on the heating and cooling equipment.

Do not attempt to turn on the cooling equipment when the outdoor

temperature is too low or the heat pump (heating) when the outdoor

temperature is too high as compressor damage could occur. Consult the

equipment manufacturer literature for safe operating temperatures.

FAN

Auto •On

MODE

Cool •Off •Heat

HEAT

ROOM

SET

OVERRIDE

Flashes on

Heat Call

ADJUST

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