6345396-UUM-A-0123
User's Information Manual: HMH7 Series - 17 SEER2
Horizontal Discharge Modulating Heat Pump
General
The units are tested in accordance with the following:
Contact information
To contact us online, go to www.york.com, click Contact
Us, and follow the instructions.
To contact us by mail, use the following address:
Johnson Controls Ducted Systems
Consumer Relations
5005 York Drive
Norman, OK 73069
Safety
Read all sections of this manual and keep the manual
for future reference.
WARNING: Cancer and Reproductive Harm –
www.P65Warnings.ca.gov.
WARNING
This product must be installed and serviced by
a qualified installer or service agency. Improper
installation, adjustment, alteration, service, or
maintenance can cause injury or property damage.
How your system works
Cooling cycle
During the cooling cycle, your system removes heat and
humidity from your home and transfers this heat to the
outdoor air.
Heating cycle (heat pumps)
During the heating cycle, your system removes heat and
humidity from the outdoor air and transfers this heat to
your home. This is possible because even 0°F outdoor air
contains a great deal of heat. Remember that your heat
pump does not generate much heat; it merely transfers it
from one place to another.
System operation
Your thermostat gives you full control of the heating and
cooling levels in your home, and can also allow you to
control these remotely using a smart device. Do not switch
your thermostat on and off rapidly or switch between
the heating and cooling mode of operation rapidly. This
could damage your equipment. Always allow at least 5 min
between changes.
Setting the thermostat
CAUTION
The main power to the system must be kept on
at all times to prevent damage to the outdoor unit
compressor. If necessary, use the thermostat control
switch to turn the system off. Should the main power
be disconnected or interrupted for 8 h or longer, do not
attempt to start the system for 8 h after the power has
been restored to the outdoor unit. If heat is needed
during this 8 h period, use emergency heat.
Thermostat
Your key to comfort
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 features the following:
• a temperature indicator
• a dial, arm, or push button for selection of the required
temperature
• a fan switch to choose the indoor fan operation
• a comfort switch for selection of the system mode of
operation
Note: Only approved thermostats have been tested
and are fully compatible with this equipment. Many
different thermostats operate on batteries or power
stealing principals. These types of thermostats
cannot be supported as trouble-free when used with
this product.
If your system is designed to allow both cooling and
heating operation, you may have either a manual
changeover type of thermostat or a programmable
electronic type of thermostat.
Manual changeover means that the comfort switch must
be manually positioned every time you want to switch
from the cooling to heating mode of operation or heating
to cooling mode of operation.
A complete operating instruction is provided by the
manufacturer for each thermostat.
Johnson Controls Ducted Systems
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