SECTION 15812

EVAPORATIVE PAN HUMIDIFIERS

PART 1 GENERAL

SECTION INCLUDES

Pan Humidifier.

Humidistat.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section 15952 - Controls and Instrumentation: Installation of humidistats.

Section 16180 - Equipment Wiring Systems: Installation of humidistats.

RELATED SECTIONS

Section 15410 - Plumbing Piping: Connecting of heating coil.

Section 15510 - Hydronic Piping: Connection of heating coil.

Section 15520 - Steam and Steam Condensate Piping: Connection of heating coil.

Section 15952 - Controls and Instrumentation: Installation of humidistats.

Section 16180 - Equipment Wiring Systems: Installation of humidistats and wiring of unit.

REFERENCES

ARI 610 - Central System Humidifiers.

ARI 630 - Selection, Installation and Servicing of Humidifiers.

SUBMITTALS

Submit shop drawings under provisions of Section [01300.] [_____.]

Product Data: Provide catalog data indicating rated capacity, dimensions, duct and service connections, electric nameplate data and wiring diagrams.

Manufacturer's Installation Instructions: Indicate assembly and installation instructions.

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700.] [01730.]

Include manufacturer's descriptive literature, operating instructions, installation instructions, maintenance and repair data, and parts listing.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this Section with minimum [three] [_____] years [documented] experience.

WARRANTY

Provide [five] [_____] year warranty under provisions of Section [01700.] [01740.]

Warranty: Include coverage for [entire unit.] [_____.]

PART 2 PRODUCTS

MANUFACTURERS

[___________________________________] Model [__________.]

[___________________________________] Model [__________.]

[___________________________________] Model [__________.]

Substitutions: Under provisions of Section [01600.] [_____.]

MANUFACTURED UNITS

Units: ARI 610; evaporative pan with [stand,] [cabinet enclosure,] humidistat, heating coil, pre-wired except for humidistat, for use with [heating hot water.] [domestic hot water.] [steam.] [electronic heating elements.]

Performance: Evaporate [_____] lbs/hr ([_____] kg/hr) of water with [[_____] degrees F ([_____] degrees C) coil water temperature] [[_____] degrees F ([_____] degrees C) steam water temperature] [[_____] KW electrical input.]

COMPONENTS

Pan, Cover, Screws and Bolts: Stainless steel[.] [with duct collar.]

Overflow and Drainage Fittings: Copper or Brass.

Float Valve Mechanism: Stainless steel or brass with 1/4 inch (6 mm) fill connection.

Coil: [7/8 inch (22 mm) OD copper.] [Shielded electric immersion heating element with safety cut-out switch (set at 225 degrees F (107 degrees C)) to disconnect electric heating element on low water level in pan.]

Blower Fan: Forward curved fan, direct driven by fused, fractional hp motor.

Floor Stand: Extruded aluminum.

Cabinet Enclosure: [Galvanized sheet metal with [baked enamel] [prime coated] finish.] [Molded fiberglass.]

Control: Humidistat cycles blower fan [and opens inlet solenoid valve.] [and energizes electric heating element.]

Flush Cycle: Timers allow one to four flushes per day of three to 120 minutes duration by [shutting off power to heating element and] opening drain valve.

Unit: Model [__________], manufactured by [__________.]

ACCESSORIES

Humidistats: Wall mounted, reverse acting, for 24 volt circuit [; Model [__________],] manufactured by [__________.]

PART 3 EXECUTION

INSTALLATION

Install in accordance with manufacturer's instructions.

Install to ARI 630.

Provide gate valve [and pressure reducing valve] on cold water supply inlet.

Connect unit to hot water supply. Provide gate valve and solenoid valve on heating water supply line, and globe valve on heating water return line.

Connect unit to steam supply. Provide gate valve and solenoid valve on steam line and thermostatic steam trap on condensate.

Pipe overflow and valved manual drain to floor drain.

Install piping with unions or flanges for easy removal of pan for servicing.

Connect units to ducts. Keep duct runs minimum length and slope back to humidifier.

END OF SECTION