Evcon ERHQ series User's Information Manual

USER'S INFORMATION
MANUAL

Ro22 OUTDOOR SPLJToSYSTEM
HEAT PUMP

MODELS: ERNQ SERIES
2 TO 3=1/2 TONS

Certrfica_on applies only ISO 9001

when the complete Certified Quality

system is listed MaNagement System

with ARI

TABLE OF

CONTACT INFORMATION ............................... 1

HOW YOUR HEAT PUMP WORKS .......................... 1

SYSTEM OPERATION .................................... 1

SETTING THE THERMOSTAT ............................ 1

Fan Operation Selection ................................ 2

Heating Cycle ........................................ 2

Cooling Cycle ......................................... 2

TO MAXIMIZE OPERATING EFFICIENCY ..................... 2

HEATING CONSERVATION .............................. 2

COOLING CONSERVATION ............................. 2

CARE OF SYSTEM ..................................... 2

COIL CARE ........................................... 2

CARE OF FAN MOTORS ................................ 2

CONTENTS

FILTER CARE ......................................... 3

OUTDOOR UNIT FINISH ................................ 3

CLEARANCES ......................................... 3

POWER INTERRUPTION ................................ 3

Heating Season ....................................... 3

Cooling Season ....................................... 3

SERVICE CALLS ....................................... 3

PARTS INFORMATION .................................. 3

CHARACTERISTICS OF HEAT PUMPS ....................... 3

A CONSTANT HEAT .................................... 3

WATER RUN-OFF ...................................... 3

OUTDOOR COIL DEFROSTING ........................... 3

LIMITED WARRANTY ..................................... 4

CONTACT INFORMATION FOR USA

• Contact us by mail:

DISTRIBUTED BY:

StyleCrest

801 W. 37th Street

Building #1

Wichita, Ks 67219

MANUFACTURED BY:

York International

6005 York Drive

Norman, OK 73069

CONTACT INFORMATION FOR CANADA

• Go to website at www.york.com click on "contact", then click on
"contact form" and follow the instructions.

• Contact us by mail:

York International

Consumer Relations

6006 York Drive

Norman, OK 73069

This Heat Pump has been specially developed and built as a heat pump
to meet the dual needs of heating and cooling. It's not just an air condi-
tioner with extra parts. That's why you can rely on efficient, trouble-free
operation.

Your system is fully automatic. Set the thermostat and forget it. And it's
automatically protected from damage by voltage fluctuations or exces-
sive heating or cooling demands.

Your split system heat pump consists of two units - one installed out-
doors and one installed indoors. The indoor unit may be installed in a
basement, attic, or crawl space.

HOW YOUR HEAT PUMP WORKS

If your hand is wet and you blow on it, it feels coot because some of the
moisture is evaporating and becoming a vapor. This process requires
heat. The heat is being taken from your hand, so your hand feels cool.

That's what happens with a heat pump. During the cooling cycle, your
system will remove heat and humidity from your home and will transfer

this heat to the outdoor air.
During the heating cycle, your system will remove heat and humidity

from the outdoor air and will transfer this heat to your home. This is pos-
sible because even 0°F outdoor air contains a great deal of heat.
Remember that your heat pump doesn't generate much heat, it merely
transfers it from one place to another.

SYSTEM OPERATION

Your thermostat puts full control of the comfort level in your home at
your fingertips. DO NOT switch your thermostat rapidly "On" and "Off"
or between "Heat" to "Cool" This could damage your equipment. Always
allow at least 5 minutes between changes.

SETTING THE THERMOSTAT

Although thermostats may vary widely in appearance, they are all
designed to perform the same basic function: to control the operation of

your air conditioning or heat pump system. Regardless of size or shape,
each thermostat wilI feature a temperature indicator; a dial, arm, or

push button for selection of the desired temperature; a fan switch to
choose the indoor fan operation; and a comfort switch for you to select

the system mode of operation.
Only approved thermostats have been tested and are fully compatible

with this equipment. Please be aware that many different thermostats

operate on batteries or "power stealing" principals. These types of ther-
mostats can not be supported as trouble free when used with this producL

A complete operating instruction is provided by the manufacturer for
each thermostat. Familiarize yourself with its proper operation to obtain

the maximum comfort with minimum energy consumption.
If your system has been designed to allow both cooling and heating

operation, you may have either a manual change-over type, or a pro-
grammable electronic type thermostat.

Manual change-over simply means that the comfort switch must be
manually positioned every time you wish to switch from the cooling to
heating or heating to cooling modes of operation.

The computerized electronic thermostat is actually a sophisticated elec-
tronic version of a manual change-over type. This thermostat includes
features which allow "set-back" temperature variations for periods of
sleep, or while you are away during the day, and means energy savings
for you. The thermostat also features a digital clock.

174566-UUM-D-0506

174566-UUM-D-0506

A CAUTION

The main power to the system must be kept "ON'at all times to

prevent damage to the outdoor unit compressor. If necessary,

the thermostat control switch should be used to turn the system
"OFF't Should the main power be disconnected or interrupted
for 8 hours or longer, DO NOT attempt to start the system for 8
hours after the power has been restored to the outdoor unit. If
heat is needed during this 8 hour period, use emergency heat.

Fan Operation Selection

A multi-position fan switch allows you to choose the type of fan opera-
tion of the indoor fan.

AUTO - With the thermostat fan switch set to "AUTO", the fan will run

intermittently as required for either heating or cooling. This position will
provide the lowest operating cost.

ON - If the fan switch is set to "ON", the indoor fan will not shut off. How-
ever, the system will still operate as required by room temperatures.
This provides continuous air filtering and more even temperature distri-

bution throughout the house, which is especially useful in houses with
basements.

Usually during spring and fall, when neither heating nor cooling is
required, you may want to run only the fan to ventilate, circulate, and fil-

ter the air in your home or building. Set the comfort control switch to
"OFF" and the fan switch to "ON". Be sure to return the switches to their

original positions for normal operation.

Heating Cycle

With the thermostat in the heating position, and the outdoor tempera-
ture in the range of 20 to 30°or below, the outdoor unit will generally run

100%of the time.

All systems can be equipped with balance point control to provide even

more efficient operation. This control will prevent the electric heater

from being energized when the outdoor air is above some predeter-

mined temperature setting (0 to 45°F). At higher temperatures, your

system will provide all the heat your home will ever need. At lower tem-

peratures, the auxiliary heat will be energized to keep your home com-

fortable.
When the outdoor air is cool and moist, frost may form on the surface of

your outdoor coil. When this frost builds to a certain point, your system
will switch to a defrost cycle. Although you may feel cooler air coming
from your registers, DO NOT adjust your thermostat. The frost will melt
quickly, and your system will return to normal operation automatically.

Cooling Cycle

Switch your thermostat to cool.Select a comfortable thermostat temper-
ature setting, typically between 75 and 80° . Comfort sensations vary
with individuals. The lower the indoor temperature desired, the greater
will be the number of hours your unit must operate.

Set your thermostat 2 or 3°F below normal several hours before enter-
taining large groups during hot weather. People give off considerable

heat and moisture.

On an extremely hot day, the indoor temperature may rise 3 to 6°F
above the thermostat setting. Properly selected equipment does not

have the capacity to maintain a constant indoor temperature during the
peak load. Over-sizing your system to handle this peak load is not prac-

tical because the oversized system would operate much less efficiently
at all other conditions.

TO MAXIMIZE OPERATING EFFICIENCY

HEATING CONSERVATION

For the most efficient operation, keep storm windows and doors closed
all year long. They not only help insulate against heat and cold, but they
also keep out dirt, pollen and noise.

Closing drapes at night, keeping fireplace dampers closed when not in
use, and running exhaust fans only when necessary will help you to

retain the air you have already paid to heat.
Keep lamps, televisions, or other heat producing sources away from the

thermostat. The thermostat will sense this extra heat and will not be
able to maintain the inside temperature to the desired comfort level.

COOLING CONSERVATION

To comfortably cool your home, your heat pump must remove both heat
and humidity. Don't turn your system off even though you will be away

all day. On a hot day, your system may have to operate between 8 to 12
hours to reduce the temperature inyour home to a normal comfort level.

Keep windows closed after sundown. While the outdoor temperature at
night may be lower than indoors, the air is generally loaded with mois-
ture which is soaked up by furniture, carpets, and fabrics. This moisture
must be removed when you restart your system.

The hotter the outside temperature, the greater the load on your sys-
tem. Therefore do not be alarmed when your system continues to run
after the sun has set on a hot day. Heat is stored in your outside walls
during the day and will continue to flow into your home for several hours

after sunset.
Use your kitchen exhaust fan when cooking. One surface burner on

"HIGH" requires one ton of cooling. Turn on your bathroom exhaust fan
while showering to remove humidity. However, exhaust fans should not
be run excessively. It would decrease efficiency by removing condi-

tioned air.
You can also help your system in the summer by closing drapes or

blinds and by lowering awnings on windows that get direct sunlight.

CARE OF SYSTEM

IMPORTANT: The Owner/user should not attempt to disassemble the
equipment nor perform the periodic maintenance unless they are expe-

rienced and qualified to do so.
A periodic inspection, cleaning, lubrication and adjustment of your heat
pump is available from your dealer. Be sure to ask him about this ser-

vice.
For those who prefer to do-it-yourself, follow the instructions below to

care for your system.

COIL CARE

Keep the outdoor unit free of loose snow, foliage, grass clippings,
leaves, paper, and any other material which could restrict the proper air
flow in and out of the unit. The coil may be vacuumed to remove any
debris from between the fins. However, don't knock ice off the outdoor
unit's coil surface following an ice or severe snowstorm. The blows
could mash the coil fins shut (blocking air passage), or break the refrig-
erant tubing allowing the refrigerant to escape.

If the coil becomes excessively dirty, turn the main disconnect switch to
"OFF" and wash the coil with your garden hose. Avoid getting water into
the fan motor and control box. Flush dirt from base pan after cleaning

the coil.

CARE OF FAN MOTORS

Some fan motors are provided with lubrication ports. Inspect your
indoor and outdoor units to determine whether or not lubrication ports
are provided.

2 Unitary Products Group