Table of Contents
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Duct Mount Centrifugal
Atomizer Humidifier
Model 356686-001C (115/60/1)
707U-UK
Model 356686-002C (220/50-60/1)
Manual for:
• Installation
• Operation
• Maintenance
CAUTION: Read installation,
operation, and maintenance
instructions carefully for safe
operation. Exercise the usual
precautions when working
with electricity.
707U
Table of Contents
Introduction ........................................1
Specifications ......................................1
Capacity Selection Guide ..................2
Operation of Humidifier ....................2
Installation
Selecting a Location ....................3
Physical Installation ......................5
Final Installation ..........................9
Electrical Installation ..................10
Humidistat Installation ..............11
Maintenance......................................12
Unit Diagram and Parts List ............14
Warranty ..............................Back cover
256703-001 7/04
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Summary of Contents for Herrmidifier 707U
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Page 1: Table Of Contents
Duct Mount Centrifugal Atomizer Humidifier 707U Model 356686-001C (115/60/1) 707U-UK Model 356686-002C (220/50-60/1) Manual for: • Installation • Operation • Maintenance CAUTION: Read installation, operation, and maintenance instructions carefully for safe operation. Exercise the usual precautions when working with electricity. -
Page 2: Introduction
During the heating season, cold air is brought into the home and heated. When heated, this air dries out and greatly increases its capacity to hold more moisture. By using a humidifier, a source of water is provided to satisfy this increased moisture holding capability, rather than having it drawn from our body surface and the surrounding furnishings in the home. -
Page 3: Capacity Selection Guide
When shutting the humidifier down for the summer months, start with cleaning any mineral accumulation from the unit. Leave the water turned off and the unit dry. If the furnace fan is to be used for cooling purposes, disconnect power to the humidifier or turn the humidistat to the OFF position. -
Page 4: Selecting A Location
• Mount the humidifier on the vertical or horizontal cold air return duct. • Locate the humidifier at least four (4) linear feet upstream of either the furnace fan and /or filter and any turn in the duct. This will ensure that condensation does not collect within the duct and cause oxidation (rust). - Page 5 Mounting behind a wall using the discharge extension (707U only) When selecting a location for the installation of your humidifier as a free standing unit, certain conditions must be met for its proper operation: Locate the humidifier in a convenient spot where the working part of the humidifier can be hidden (i.e.
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Page 6: Physical Installation
Physical installation Caution: Only a trained HVAC servicer or contractor should install this humidifier. Do not connect the unit to the power source until installation is complete. A thorough checkout of the unit installation should be completed before operation. Failure to follow these directions may void the manufacturer’s original... - Page 7 11. Before mounting the humidifier in its final position, carefully rotate the impeller assembly by hand to ensure it rotates freely. Position the humidifier on the...
- Page 8 Physical installation Mounting behind a wall using discharge extension (707U only) Locate the inside wall template and mount on inside wall. The inside wall opening must be cut first. Be sure to follow the limitations noted as A, B, and C printed on the template.
- Page 9 11. Before mounting the humidifier in its final position, carefully rotate the impeller assembly by hand to ensure it rotates freely. Mount the humidifier on the wire mounting bracket with the float and valve assembly connection facing the most convenient location, but providing the least obstruction to traffic.
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Page 10: Final Installation
IMPORTANT: In installations where accidental overflow could cause water damage, connect a drain hose from the humidifier water reservoir pan overflow tube to a drain. Do NOT use a soldered joint because the overflow tube will become heated and warp the water reservoir pan. -
Page 11: Electrical Installation
The humidifier will only operate when the furnace blower is in operation. It is recommended to install a humidistat (provided with model 707U) in the system to provide optimum performance when continuous air circulation is desired. If a humidistat is not used in the installation, install an ON/OFF switch in its place. -
Page 12: Humidistat Installation
Electrical installation Wiring diagram for humidifier installation - Free standing installation - (707U only) -Dedicated wiring connection Humidistat installation Humidistat: 1. Locate the humidistat in the living area (see location of humidifier diagram on page 4), making sure that it is at least five (5) feet from a supply register (duct mounted installation) or discharge nozzle (free standing installation). -
Page 13: Maintenance
Like your heating system and air conditioning unit, periodic maintenance and cleaning are required to ensure the safe and efficient operation of your humidifier. Due to the operation cycle of the furnace and humidifier, it may require 2 to 5 days to reach the proper humidification level. Maintenance... - Page 14 We suggest either a water/white vinegar solution or liquid humidifier cleaner. 12. Reassemble and remount the humidifier by reversing steps 6, 5, and 4. 13. Reconnect the water line and motor leads to the humidifier, turn on the water supply from the saddle valve and restore electrical power.
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Page 15: Unit Diagram And Parts List
ITEM 707U-UK 707U PART NO. 252413-001 MOTOR COVER 352728-001 MOTOR BASE 47BP 252596-001 MOTOR 115 VOLT 252596-002 MOTOR 220 VOLT 3526BO-002C HUMIDISTAT IN-2ST NI = NOT ILLUSTRATED DESCRIPTION DISCHARGE DOME RETAINER CLIP DIFFUSING SCREEN IMPELLER SCREW, SET CUP IMPELLER PUMP... -
Page 16: Warranty
3. All components are covered by this limited warranty except expendable items, such as evaporative pads, media filter pads and nozzles. 4. If, within the warranty period, any Herrmidifier residential humidifier unit or component requires service, it must be performed by a competent heating and/or air conditioning contractor (preferably the installing contractor).
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