Home Automation Omnistat RC-100B, Omnistat RC-100BZ Owner's Manual

O M N I S T A T

ELECTRONIC COMMUNICATING THERMOSTAT

Owner's Manual

RC-100B / RC-100BZ

Heat Pump

2 Stage Heat / 1 Stage Cool

Document Number 13R00-3

May, 2007

AUTO

DAY

COOL

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This thermostat is Listed by Underwriter's Laboratories and
UL Canada.

This thermostat has been tested and found to comply with the
requirements of the European Union for Electromagnetic
Interference, Electromagnetic Immunity and Safety under the
applicable EMI and Low Voltage Directives and Standards.

This thermostat has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the
FCC Rules.

This product generates and can radiate radio frequency energy.
Due to its low power design, it is unlikely to interfere with
radio and TV communications. If it is suspected of doing so,
the user is encouraged to try to correct the problem by
reorienting the receiver's antenna, moving the receiver away
from the product, or consulting an experienced radio/TV
technician for help.

Copyright © 1999-2007 Home Automation, Inc.

All Rights Reserved

FCC

CONTENTS

INTRODUCTION ............................................................................................. 1

DESCRIPTION.................................................................................................. 1

MAINTENANCE............................................................................................... 1

ABOUT HEAT PUMPS... ................................................................................. 2

ENERGY EFFICIENT CONTROL ................................................................ 3

OPERATION .....................................................................................................4

DISPLAY ............................................................................................................ 7

FILTER REMINDER .......................................................................................9

ANTICIPATION ............................................................................................... 9

SETTING THE CURRENT TIME AND DAY ............................................ 10

 PROGRAMMING ................................................................................. 10

SETTING TIME SCHEDULES..................................................................... 12

 DAY/NIGHT MODE............................................................................. 13

 PROGRAMMABLE ENERGY SAVER MODE (PESM) ............... 13

 SYSTEM MODE.................................................................................... 14

 AUTOMATIC TIME UPDATE........................................................... 14

1

INTRODUCTION

Thank you for purchasing your new RC-100 electronic
communicating thermostat. Your thermostat will provide you with
comfort, convenience, and energy savings for years to come.

We hope that you take a few moments to become familiar with all of
the features of this fine product by reviewing this manual. Please keep
this manual on file for future reference.

DESCRIPTION

The RC-100 is a precision digital thermostat specifically designed for
heat pumps. It has the capability of being controlled both locally and
by remote control. It offers programmability, stand alone operation,
and robust communications with automation systems, utility control
systems, and personal computers.

There are several items that can be configured at the time of
installation. These items have a check box () for your installer to
indicate which features are used in your system.

As an EPA ENERGY STAR Partner, Home Automation, Inc. has
determined that this thermostat meets the ENERGY STAR guidelines
for energy efficiency.

MAINTENANCE

Your new thermostat is maintenance free. There is no battery to
install or replace. If necessary, clean unit carefully with a mild soap
solution on a soft cloth.

2

ABOUT HEAT PUMPS...

A heat pump is a mechanical refrigeration system that operates in two
modes, heating and cooling. In cooling mode, the heat pump takes
indoor heat and pumps it outside, just like a standard air conditioner.
In heating mode, the process is reversed: the heat pump takes outside
heat and pumps it inside. Although it feels cold outside, the air still
has heat in it that the heat pump can use as a source of heat. The fact
that the heat pump moves heat from one place to the other (as opposed
to creating heat directly from electricity or gas) is the key to it's
remarkable efficiency. A heat pump usually produces over 3 times
more heat per watt of electricity than standard electric heating.

While some heat pumps use outside air as their source of heat, others
use the heat available under the ground or in a water well. These are
called air-source, ground-source, or water-source heat pumps,
respectively. The RC-100 is capable of controlling all of these types of
heat pumps.

In extremely cold conditions, the heat pump may require assistance
from another source of heat, known as "auxiliary heating". Auxiliary
heating is less efficient than the heat pump, so it is best to use the heat
pump instead of the auxiliary heat.

For normal and most efficient operation, the RC-100 should be in
HEAT or AUTO mode so that it can properly control the auxiliary heat.
The heat pump is used first, auxiliary heat is used only if necessary.

In EMERGENCY HEAT mode, the RC-100 will turn the heat pump off
and use the auxiliary heating only. This mode may be used if the heat
pump has failed.

3

ENERGY EFFICIENT CONTROL

Using the programmable or remote control features of your
thermostat, you can save energy costs by setting back the thermostat
during unoccupied times. This reduces the energy loss from indoors
to outdoors. In the past, it has been said that heat pumps should not be
set back because it takes more energy to re-heat the premises than to
keep it at the same temperature. This is true with mechanical
thermostats, because they will use the inefficient auxiliary heat to
recover from the setback. This is not true with the RC-100, because it
uses intelligence to ensure that recovery from setback is done using
the heat pump, and not the auxiliary heat. Because the heat pump
takes longer to recover, heat pumps should not be set back for periods
of time less than 4 to 6 hours.

The RC-100 has microprocessor intelligence that continually monitors
the performance of the heat pump and uses the auxiliary heat only
when necessary. If the RC-100 determines that the heat pump is able
to heat at a rate of 5 degrees per hour or better, the auxiliary heat will
not be used. If the heat pump is unable to heat at this rate, the RC-100
will use the auxiliary heat to supplement that of the heat pump. Under
these conditions, the heat pump will run continuously and the
auxiliary heat will cycle on and off as needed.

If you wish to temporarily override Energy Efficient Control to heat as
quickly as possible, press the Hold key. The RC-100 will use the
Auxiliary Heat as needed to reach the heat setting, then resume Energy
Efficient Control once the setting is reached.

Remember to turn Hold old off to resume programmed operation.