Aprilaire 1150 manual

Steam Humidifier Models 1150 and 1160 Installation, Operation, and Maintenance Manual Humidifier READ AND SA VE THESE INSTRUCTIONS[...]

PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Materials Provided and Not Provided . . . . . . . . . . . . . . . . . . 3 Electrical Specifications, Capacities and Weights . . . . . . . . 4 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Overview of Humidifier Operation . . .[...]

PRODUCT OVERVIEW Aprilaire Steam Humidifiers create steam by boiling water inside a steam chamber. This is accomplished by the transfer of energy from electric heating elements to the water inside the chamber. A three-level water probe is used to determine when to turn on and off a water fill valve in order to bring water into the chamber. Once the[...]

OM-4006 Removable steam chamber Immersion heaters (1 in Model 1150, 2 in Model 1160) Electrical power area 1½” (DN40) flexible steam hose Duct Electrical controls area Power wiring knockout ¾” (DN20) copper overflow and drain Control wiring knockout FIGURE 1 – Product Overview TABLE 1 – Electrical Specifications Model number Maximum steam[...]

OM-4018 FIGURE 2 – Dimensions (pertains to Models 1150 and 1160) 6.50” (165 mm) Venting Chamber drain Steam outlet 11.89” (302 mm) TOP VIEW Power wire knockout Control wire knockout LEFT SIDE VIEW FRONT VIEW BOTTOM VIEW 1.00” (25 mm) 3.09” (78 mm) 24.06” (611 mm) Chamber fill 18.93” (481 mm) 9.99” (254 mm) 24.06” (611 mm) 0.83” [...]

90-914 FIGURE 3 – Mounting Hole Locations        90-912, 90-913 FIGURE 4 – Distribution Tube Dimensions ?[...]

INTERNAL CONTROLLER The internal controller within the humidifier cabinet responds to external inputs (e.g., humidistat and airflow proving switch) and internal inputs (e.g., water level probe inside the steam chamber) to provide: • Relative humidity (RH) control – Model 1150: With an on-off demand signal, the controller maintains RH within 5% [...]

TABLE 2 – Display Panel Light Indications Indicator light(s) Status Description All Blinking sequentially from right to left The humidifier is in a forced cool-down period prior to a required automatic drain sequence. Normal operation On/Off (switch) On Power is on. Normal operation. Slow blinking (1/sec.) The electronic water level probe needs [...]

AA-LW420-1 FIGURE 6 – Model 1 150 Wiring Diagram INST ALLA TION                                            ?[...]

AA-LW420-2 FIGURE 7 – Model 1 160 Wiring Diagram                                               ?[...]

SETTING SLIDE SWITCHES IMPORTANT: Slide switch on-off positions 1 through 16 are preset at the factory. These settings are determined by output capacity, water type, and demand signal type. Changing these settings will affect humidifier operation. Change on-off positions only per the instructions in this manual or as instructed by Aprilaire technic[...]

TABLE 3 – Factory Slide Switch Settings Slide switch S1 Slide switch S2 Position Factory setting My setting Position Factory setting My setting 1 Off 9 Off 2 Off 10 See Table 4 Do not change. 3 Off 11 Off Do not change. 4 Off 12 Off Do not change. 5 See Table 4 Do not change. 13 Off Do not change. 6 Off Do not change. 14 Off Do not change. 7 Off [...]

Humidifier Location When selecting the location of the humidifier, consider the following: • Proximity to duct To av oid h avi ng to in stal l a dra in at th e dist rib utio n tube in the d uct , the di stri but ion tu be mu st be mo unte d at an el eva tion hig her than th e humi dif ier. A 10’ (3 m) lengt h of va por ho se is pr ovi ded wi th[...]

DISTRIBUTION TUBE AND CONTROL DEVICES LOCATION OPTIONS CHOOSING A DISTRIBUTION TUBE LOCATION When installing a steam humidifier on a split system, there are three locations that can be used to mount the steam distribution tube: the supply plenum (Location A), the return duct (Location B), or a supply branch (Location C). Note: Wherever distribution[...]

          ?[...]

DISTRIBUTION TUBE INSTALLATION After the location for the distribution tube has been identified, follow the steps below and refer to Figure 12 to install the distribution tube in the duct. 1. Cut or drill a 1 5/8” diameter opening in the duct. 2. Drill a 3/8” hole in the opposite surface of the duct so that the distribution tube has a 2”/ft. [...]

OM-4008 Duct Distribution tube Humidifier Secure and seal face plates Mounting nut 3/8” - 16 Tube pitch: 2”/ft (15%) Steam hose; do not exceed 10’ (3 m) in length Hose pitch: 2”/ft (15%) FIGURE 12 – Distribution Tube Installation 90-915 FIGURE 13 Mounting bolt 3/8” - 16 x 1/2” 4.5” minimum from tube to duct ceiling Distribution tube[...]

MOUNTING THE HUMIDIFIER Mounting the humidifier on the wall When mounting on a wood stud wall (studs 16” [406 mm] on center), locate studs and position lag bolts in place so that each of the bolts centers on a stud. Mark hole locations and predrill ¼” (6 mm) diameter pilot holes. Secure cabinet to wall with lag bolts provided. When mounting on[...]

Below are field wiring connections: • Connect to line power. Refer to the wiring diagram or the dataplate on the outside of the cabinet for wire sizing amperage. • Connect to control signal wiring. (from the Automatic Steam Humidifier Control or from signal by others). Mount the Automatic Steam Humidifier Control in the return air duct as shown[...]

    OM-4007 Fused disconnect P ow e r s up p ly FIGURE 14 – Line Power Wiring Requirements WARNING 240 volts may cause serious injury or death from electrical shock. Shut off power at main breaker before installing supply wiring for humidifier. LINE POWER The humidifier is designed for 2[...]

Control input wiring The internal controller offers four input control types, which are field adjustable. The factory default control type for Model 1150 is the Automatic Steam Humidifier Control, on-off configuration as shown in Figure 16 . The factory default control type for Model 1160 is the Automatic Steam Humidifier Control, modulating config[...]

90-918 FIGURE 18 – Model 1160: Input Wiring for Optional 0-10 VDC Signal by Others                 [...]

Description: The airflow proving switch is a safety device that will prevent the humidifier from producing steam when there is no airflow present in the HVAC system. The switch is a pressure differential measuring device that determines if there is airflow present based on the pressure differential between the HVAC system and atmosphere. The switch[...]

Notes: • Dashed lines indicate provided by installer. • The water supply inlet is more than 1” (25 mm) above the skim/overflow port, eliminating the possibility of backflow or siphoning from the chamber. No additional backflow prevention is required; however, governing codes prevail. Shock arrester recommended to reduce water hammer ¼” (DN[...]

Notes: • Dashed lines indicate provided by installer. • The water supply inlet is more than 1” (25 mm) above the skim/overflow port, eliminating the possibility of backflow or siphoning from the chamber. No additional backflow prevention is required; however, governing codes prevail. Shock arrester recommended to reduce water hammer Water sup[...]

DISTRIBUTION DRIP TEE INSTALLATION If the humidifier cannot be mounted below the steam distribution tube, such that there is a minimum 2”/ft (15%) pitch along the entire hose length, a drip tee as shown below must be installed. Failure to follow the recommendations on this page, when the humidifier is mounted higher than the distribution tube, ca[...]

After the system is properly installed and connected to both electrical and water supplies, it can be started. START-UP PROCEDURE: Mounting Before filling with water, check mounting to verify that the steam chamber is level and securely supported. Refer to Maintenance Section, page 29, for details on securing the steam chamber. Piping Verify that a[...]

Water Supply • Turn water supply on; confirm drain valve is closed. Power • Turn the supply power on. – Verify that the On/Off indicator light illuminates along with the Fill indicator light. – Verify that the fill valve opens and adds water until the humidifier chamber is full, at which time the fill valve closes and the Fill indicator lig[...]

D. If the steam chamber is cool to the touch, skip to Step 1E. If the chamber is hot, the water must be cooled down before draining and handling of the chamber. This can be accomplished by allowing sufficient time for the chamber to become cool enough to handle. As an alternative, if the drain piping is designed to handle intermittent drain water t[...]

2. Remove the steam chamber (see Figure 25 for drawing item numbers): • Hold up on the bottom of the steam chamber (Item 6 in drawing) and remove the top mounting nuts (Items 2 and 3). • Hold up on the bottom of the steam chamber while removing the bottom mounting nut (Item 4). When the bottom mounting nut is removed, the handle (Item 5) falls [...]

11. Turn on the electrical power. 12. Allow the steam chamber to fill with water and initiate a humidity demand signal (see Figure 28 for drawing item numbers). • IMPORTANT: Verify that the gasket seal is not leaking prior to leaving the humidifier unattended. – If a leak is observed in the left front or side of the gasket, loosen backing nut ([...]

TROUBLESHOOTING Problem Possible Cause Action All indicator lights are blinking sequentially from right to left The humidifier is in a forced cool-down period prior to a required automatic drain sequence. • This is normal operation. DO NOT RESET POWER. The humidifier will automatically resume making steam once it has cooled down, drained, and r[...]

Problem Possible Cause Action The On/Off light on the display panel is blinking slowly (one blink per second) Mineral buildup or oxidation on probe rods • Remove probe assembly and clean probe rods; reset power to clear warning. Deterioration of probe rod assembly • Replace probe rod assembly. The On/Off light on the display panel is blinking r[...]

Problem Possible Cause Action Heater burnout Improper wiring • Verify proper voltage applied to heater. • Verify proper electrical connections. Water level is too low. • Replace probe assembly. Mineral buildup on heaters • If heaters are on continuously and therefore not expanding and contracting with on-off cycles to shed mineral buildup, [...]

Problem Possible Cause Action Humidity below desired level No humidity demand signal from humidistat • Low or no signal from humidistat. Check for proper wiring. • No demand signal by others. • If using Automatic Steam Humidifier Control in the Automatic Mode and the temperature outside is greater than 60°F, the unit will not operate. If hu[...]

Connector tab on ribbon cable Programming port factory use only Internal controller board OM-2031 Note: See page 37 for a listing of replacement part numbers. REPLACEMENT P ARTS Connector tab position Connect to pins 1 through 9 LED indicator Microchip Programming port for factory use only Display panel ribbon cable connector OM-2030 Internal contr[...]

OM-4040                                                    [...]

APPENDIX – ABSORPTION DIST ANCE CALCULA TION Step 1: Enter the Design Conditions Percentage of Outdoor Air OA: Indoor Air Temperature T Indoor : Setpoint Indoor RH (for the leaving air) RH Leaving : Step 2: Find the ‘Moisture Content Factor’ for the leaving air ( M Leaving ) In Table 7, find the intersection of T Indoor and RH Leaving . The i[...]

                                     ?[...]

1015 E. Washington Ave. • Madison, WI 53703 • Phone: 888/782-8638 • Fax: 608/257-4357 • www.aprilairecontractor.com 61000129 B2203603A W ARRANTY Please… Take a few minutes to visit us on-line at www.aprilairecontractor.com to register your Aprilaire product. If you do not have on-line access, please ,mail a postcard with your name, addres[...]