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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 02-DFC534SI

Printed in U.S.A.

Form 53-4SI

Pg 1

11-05

Replaces: 53-1SI

Book 1

4

Tab

3e 2f

PROGRAMMABLE

STEP #1 PREPARATION

1

STEP #2 WIRE CONNECTIONS

1

SAMPLE WIRING DIAGRAM

2

STEP #3 TEST OPERATION

2

ADVANCED SETUP

2

ABOUT ADVANCED FEATURES

AND OPERATION

3

TROUBLESHOOTING

4

CALIBRATION

4

This device complies with Part 15 of the FCC rules. Opera-
tion is subject to the following 2 conditions: (1) This device
may not cause harmful interference, and (2) This device
must accept any interference received, including interfer-
ence that may cause undesired operation.

Refer to the chart below, or the wiring diagram that
follows.

*Not applicable for use with Duct-Free Splits heat pump systems.

Table of Contents

IMPORTANT:

Follow

Installation Instructions

carefully.

CAUTION:

DISCONNECT POWER TO THE SYS-

TEM BEFORE REMOVING THE OLD THERMOSTAT
AND INSTALLING THE NEW THERMOSTAT. SERIOUS
PERSONAL INJURY COULD RESULT.

STEP #1

PREPARATION

A.

Proper installation of the thermostat will be ac-
complished by following these step by step in-
structions. If you are unsure about any of these
steps, call a qualified technician for assistance.

B.

Assemble tools and recommended junction box.

For best operation, install the thermostat in a junc-
tion box that is free from drafts that originate in-
side the wall.

C.

Carefully unpack the thermostat. Save the screws,
bracket, and instructions.

D.

Power to the system should be off for installation
or replacement.

STEP #2

WIRE CONNECTIONS

FUNCTION

INSTALL ON THE

CONNECTOR MARKED

Lo Fan

G1

Compressor

Y

Heating

H2

24 v Power

R

Common

C

Rev. Valve

O*

Hi Fan

G2

Remote 5vdc

RS+5

Remote Sensor Signal

RS

Remote Sensor Ground

RS GND

Dry Contact Switch 1

CK1

Dry Contact Switch 2

CK2

Flat Blade

Screwdriver

Wire Cutter

and Stripper

.366”

WA

L

L

WA

LL

FLATSTAT

EXTENDS
LESS THAN
3/8" FROM
THE WALL.

Flatstat
in Small
J-Box

Installation Instructions

DIGITAL THERMOSTAT 53DFS250-FS

Heat Cool and Cooling Only

H

EAT

AUTO

   

COOL

!

Содержание 53DFS250-FS

Страница 1: ... SYS TEM BEFORE REMOVING THE OLD THERMOSTAT AND INSTALLING THE NEW THERMOSTAT SERIOUS PERSONAL INJURY COULD RESULT STEP 1 PREPARATION A Proper installation of the thermostat will be ac complished by following these step by step in structions If you are unsure about any of these steps call a qualified technician for assistance B Assemble tools and recommended junction box For best operation install...

Страница 2: ...Conductor 18 gage unshielded cable from the thermostat to the remote sensor CK1 GND RS RS 5 H2 G2 C G1 Y O R Adjust the maximum allowable heat set point when security is in effect Step 8 only appears if Step 9 is not 0 35 to 99 F Locked Setup HEAT Select the security level 0 no security in effect 1 set point range limited 2 1 program on all times 3 2 prohibits set point changes Locked Setup Select...

Страница 3: ...tons Locked will appear on the display To unlock the buttons again press and hold the Mode button While holding the Mode button simul taneously press the Up and Down buttons Locked will disappear from the display DRY CONTACT SWITCH The terminals are normally open Closing or completing the circuit will cause the thermostat to enter Occupied 1 This fea ture allows an external device such as a centra...

Страница 4: ...ead the tem perature from the remote sensor and ignore the tem perature sensor inside the thermostat The thermostat automatically recognizes when a remote sensor is con nected When reading the temperature from the re mote the degree icon above the room temperature blinks once a second The Override button on the remote sensor works slightly different than the Override button on the front panel Each...

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