Ace Horizon Series User manual

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Horizon Series Owner’s Manual 1
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Horizon Series Owner’s Manual 2
Safety Notes:
•The Horizon Series Dehumidifier must always be connected using the grounded
electrical connection as required from all electrical appliances. The warranty is voided
and all responsibility for the operation is born by the owner if non-grounded wiring is
utilized.
•The Horizon Dehumidifiers must only be maintained and serviced by a qualified
technician.
•The Horizon Dehumidifiers are intended only for operation when oriented with the unit
sitting on its feet and level. Any other orientation could cause water to come in
contact with the electrical components. Remove plug before moving dehumidifier. If
any water may have spread throughout unit, the unit should be opened and allowed
to dry thoroughly before reconnected to electric and restarting.
•For proper operation, neither the inlet nor discharge should be positioned against a
wall. The inlet requires a minimum of 12” clearance and the discharge needs a
minimum of 24” clearance.
•For proper diffusion of air throughout the room, the dehumidifier should be positioned
with the sides against a wall and the inlet and discharge perpendicular to the wall.
•Do not insert any objects into the inlet or discharge. If service is required, call a
qualified technician. All work on unit should be done with the unit “off” and
unplugged.
•Do not use water to clean unit exterior. Only use a damp cloth with unit unplugged.
•Do not use unit as shelf or device to hang clothes. This could cause damage to unit.
•The inlet filter generally needs cleaned no more than once per month. Check unit on
a weekly basis to insure that more frequent cleaning is not required.

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Horizon Series Owner’s Manual 3
Identification:
For future reference, write down the model, serial number, date of purchase and use this
information whenever corresponding concerning your dehumidifier.
Model Number Horizon ______________________
Serial Number _____________________________
Date of Purchase _____________________________
Customer Service:
For additional questions concerning the operation of your dehumidifier, please:
Contact your installing contractor
Please call Horizon Dehumidifiers
Email: [e-mail]
Warning
120 Volts AC may cause serious injury from electric shock.
1. Disconnect electrical power before servicing
2. Plug unit only into grounded electrical outlet
3. Do not use extension cord
4. Do not use plug adapter
Power Supply: 115V, 60 Hz
AC Only 1 Phase
Outlet Requirement: 3-Prong, GFI
Circuit Protector: 15 Amp Time Delay Fuse or Circuit Breaker
Principle of Operation
The Horizon Series Dehumidifier utilizes its integral humidistat or optional remote mount
humidistat to monitor the conditioned space. When the relative humidity goes above the
selected set point, the dehumidifier will energize. Air is drawn across an evaporator coil.
The evaporator coil is cooler than the dew point of the air so moisture will condense out of
the air (below 80°F you will actually see ice forming on the evaporator coil). Air is then
reheated through the condenser coil and distributed back into the room.

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Horizon Series Owner’s Manual 4
Installation
The area to be controlled should be sealed with a vapor barrier. If installed in a crawlspace,
all vents should be sealed.
WARNING: It is recommended to remove dehumidifier from area if applying a liquid
vapor barrier. Some coatings dry via “solvent evaporation,” which can be harmful to certain
components in your dehumidifier. Allow coating to completely dry and exhaust vapors prior
to positioning dehumidifier. Read and follow coating manufacturer’s instructions completely.
Place dehumidifier on level surface
If necessary, the legs have some adjustment to help level the unit.
oNOTE: On units with optional integral pump, an additional pair of legs is
provided to give further adjustment (up to 3”)
WARNING – If after unit is positioned, it is moved in such a manner that the compressor
didn’t remain in a vertical orientation, wait a minimum of 2 hours before turning the unit
“on.”
Drain Line
oStandard Unit - Route drain line (3/4” ID tubing) to drain or outside of the area.
Drain line must have a downward slope to drain or condensate pump. Drain
fitting on units is ¾” MPT.
NOTE: If you plan on using a section of garden, it will most
likely be necessary to purchase a ¾” FPT x ¾” MGH adapter at
a local hardware store to create a leak-free joint.
Optional Unit with PK Kit – See Instructions included with “PK” Pump Kit
Plug unit into 15 amp grounded outlet.
To operate unit, turn humidistat knob clockwise until unit energizes.
oConfirm compressor is running and allow to run for minimum of 15 minutes
If under 70°F, a layer of ice will form on evaporator coil
If over 70°F, a layer of frost or water droplets will form on coil
After you’ve confirmed satisfactory operation of unit, humidistat should be set at
desired position for automatic operation.

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Horizon Series Owner’s Manual 5
Position of Dehumidistat Knob 1 2 3 4 5___________________
Approximate Room Setpoint 70% 60% 48% 35% 25% Relative Humidity
•In “OFF” the machine will never start
•In “CONT” the machine will never stop
NOTE: Humidistat settings are approximate only. For critical applications, you may
want to confirm actual settings with a psychrometer and adjust according.
Operation
During normal operation, the dehumidifier will automatically cycle “on” and “off” to maintain
your desired set point. If it should need to run for extended periods of time, the
dehumidifier features an automatic defrost cycle to melt any ice that accumulates on
evaporator coil. Approximately every 35 minutes of continuous operation, the unit will test
for the need for a defrost cycle. If required, it will defrost for approximately 3 minutes.
Warning: Never apply an external source of heat to melt ice off coil.
Maintenance – Annual Inspection of Coils and drain line is required.
1. Unplug Unit
2. Filter may be cleaned by
a. Vacuuming
b. Washing with warm, soapy water. Rinse and shake dry.
3. Coils may be cleaned by
a. Vacuuming the external surfaces of coil
b. Blowing compressed air from behind coils. Hold air nozzle 6” away from coil to
avoid damage.
Warning: Do not steam clean refrigerant coils.
4. Plug in Unit
5. Test Refrigerant Charge
a. Confirm compressor is running and allow to run for minimum of 15 minutes
i. If under 70°F, a layer of ice will form on evaporator coils
ii. If over 70°F, a layer of frost or water droplets will form on coil
6. Test Defrost System
a. Leave unit running for approximately 35 minutes. The unit should enter a
defrost mode for approximately 3 minutes. The unit will run fan only for a
period of time and then check the temperature of the coil. If necessary, the
unit will enter a defrost mode with the compressor operating and fan off to
defrost the coil If the unit will not defrost, either

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Horizon Series Owner’s Manual 6
i. Control board may be defective
ii. Bypass valve may be defective
7. After routine maintenance has been completed, return humidistat to desired setting.
If any problems occur during routine maintenance, contact your contractor or the factory.
Specifications:
MODEL See Data Label
HEIGHT 16”
WIDTH 13.8”
LENGTH 23”
WEIGHT 62.00 LBS
AIRFLOW 350 CFM
MOISTURE REMOVAL
AT 80F/60% RH
See Data Label
POWER SUPPLY 115 VOLT/60 HERTZ SINGLE
PHASE
FINISH POWDER-COATED EPOXY
OPERATING RANGE 33 F TO 90 F
REFRIGERANT See Data Label
CONDENSATE DRAIN SIZE ¾” MPT
AMPS (FULL LOAD)
AT 80F/60%
See Data Label
POWER CORD 20’ GROUDED PLUG
FILTER SIZE 11x11” (Washable/Reusable)

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Horizon Series Owner’s Manual 7
Parts List
H
Ho or ri iz zo on n S Se er ri ie es s P Pa ar rt ts s L Li is st t
Item
Description
1
Compressor
2
Humidistat
3
Fan Motor
4
Fan Blade
5
Thermostat
6
Capacitor
7
Relay
8
Solenoid Coil
9
Solenoid Valve
10
Power Cord
11
Control Board
12
Condenser Coil
13
14
Evaporator Coil
Inlet Filter (Not
Shown)
1
2
1
2
3
4
5
6
7
8
9
10
11
12
13

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Horizon Series Owner’s Manual 8
Warranty
Seller warrants the equipment to be free from defects in workmanship and materials for a
period of 12 months after shipment (60 months/5 years on compressor, evaporator and
condensor). This warranty is limited, however, to the repair or replacement of defective
equipment. If it is necessary to return unit for service, customer is solely responsible for
proper packaging, transportation costs. Customer must initiate warranty process by
contacting factory. Do not send any component or product back to factory without Return
Material Authorization.
This limited warranty does not apply to any part or component that is damaged in transit or
when handling, has been subject to misuse, has not been installed, operated or serviced
according to the Seller’s instructions, or has been operated beyond the factory-rated capacity
or has been altered in any way. Routine maintenance is not covered by this warranty.
Seller’s liability is limited to replacement of defective parts or components and does not
include any cost of labor (including, but not limited to, labor to remove and/or reinstall any
defective part), refrigerant or piping. Customer may elect to have unit fixed locally in which
case required replacement parts will be sent to customer at customer’s expense.
ACE shall not be responsible for loss of use of any product, loss of time, inconvenience, or
damage to other equipment, or any other indirect or consequential damage with respect to
property whether as a result of breach of warranty, neglect, or otherwise.
THE WARRANTIES AND LIABILITIES SET FORTH ARE IN LIEU OF ALL OTHER
WARRANTIES EXPRESSED OR IMPLIED, IN LAW OR IN FACT, INCLUDING
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR
PURPOSE. Air Cleaning Equipment’s total liability, regardless of nature of claim
shall not exceed original purchase price of the product. If a product or
component is replaced while under warranty, the applicable warranty period shall
not be extended beyond the original warranty time period.
The foregoing shall constitute the total liability of seller in the case of defective performance
of all or any of the equipment or services provided to Buyer. Buyer agrees to accept and
hereby accepts the foregoing as the sole and exclusive remedy for any breach or alleged
breach of warranty by Seller.