IO-123075 Effective 12-01-11
10
practices. The installer should use best judgement to
ensure safe installation and operation of the unit.
1) Room Thermostat- This is the device that controls
that operation of your heating and/or cooling unit. It
senses the indoor temperature and signals the
equipment to start or stop maintaining the
temperature you have selected for your comfort. The
room thermostat should be in a central, draft free
inside wall location for best operation. Do not place
any heat producing apparatus such as lights, radio,
etc., near the thermostat as this will cause erratic
operation of the comfort system. The thermostat can
accumulate dust or lint which can affect its accuracy.
It should be cleaned annually.
2) Air Filter(s) - All central air moving comfort systems
must include air filter(s). These filters will be located
either in the equipment or in the return air duct
system upstream of the equipment. The filter(s)
removes dust and debris from the air thus helping to
keep your air-conditioned space clean. More
important, the filter keeps dust and debris from
collecting on the heat transfer surfaces thus
maintaining optimum equipment efficiency and
performance. Inspect and clean or replace filters
every month. This routine maintenance procedure
will pay big dividends in reduced operating cost and
reduced service expense. Never operate comfort
equipment without filter(s).
3) Fuses and/or Circuit Breakers- This comfort
equipment should be connected to the building
electric service in accordance with local and
National Electric codes. This electrical connection
will include over-current protection in the form of
circuit breakers. Have your contractor identify the
circuits and the location of over current protection so
that you will be in a position to make inspections or
replacements in the event the equipment fails to
operate.
4)
WARNING
a) Do not store combustible materials or use
gasoline or other flammable liquids or vapors in
the vicinity of this appliance.
b) Do not operate the comfort equipment with
panels removed.
c) Have your contractor point out and identify the
various cut-off devices, switches, etc., that serve
your comfort equipment. There is a main switch
that will cut off energy to your heating system.
Know where they are so that you may cut off the
flow of energy in the event of overheating.
5) Periodic Checkup and Service- This product is
designed to provide many years of dependable,
trouble-free comfort when properly maintained.
Proper maintenance will consist of annual check-ups
and cleaning of the internal electrical and heat
transfer components by a qualified service
technician. Failure to provide periodic checkup and
cleaning can result in excessive operating cost
and/or equipment malfunction.
6) Lubrication- Direct drive blower motors are equipped
with permanently lubricated bearings and do not
require further lubrication.
7) Air filter replacement: An air filter can restrict the
airflow of air to the fan coil if it is not cleaned or
replaced periodically. When replacing the air filter,
always replace with the same type and size as
originally furnished with the unit.
ABM Hydronic Related General Information
1) Equipment Sizing
Select an air handler with a heating output that exceeds
the space heating loss of the structure and that has a
cooling coil sized to match the outdoor condensing unit.
Note:
The heating output of the air handler or hot water
coil will not be greater than the output of the selected hot
water heater. Therefore, if the water heater is undersized
the heating BTUH of the air handler will be LESS than its
rated output.
2) Water Heater Selection
The following sizing information should only be used as
a basic guide to adequate water heater sizing because
of variations in each family's domestic hot water
requirements. For additional assistance in water heater
sizing contact a professional engineer.
Proper water heater sizing should consider both the
gallon capacity
AND
the BTU input of the water heater.
a.
To determine water heater GALLON CAPACITY: A
minimum 40-gallon high recovery and/or high efficiency
gas or oil-fired water heater is recommended. The
following volume-sizing guide is satisfactory in most
areas of the country:
CFM
Min Water Heater
600-800
40 gal
1000-1200
50 gal
1400-1600
2x40 gallons piped together
High input 50 gallons (63-75k Btu)
72-75gallons
2000
105k Btu
b.
To determine water heater BTU INPUT (assumes a
water heater recovery efficiency of 76%): For mild
climates: BTU INPUT=structure’s heat loss x 1.51. For
colder climates: BTU INPUT=structure's heat loss x
1.58.
3) Pump Replacement
a.
Disconnect electrical power to the unit before
servicing.
