York Hu12mb Installation Guide

This product must be installed by a qualified heating and air conditioning contractor. Failure to do so could result in serious injury from electrical shock.

This product must be installed in compliance with all local, state and federal codes.

ATTENTION INSTALLER:

READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING

MODEL 7000 FAN POWERED HUMIDIFIER

INSTALLATION OPTIONS

Typical Installation Alternate Installation

COOLING COILS IN

WARM AIR PLENUM

Humidifier to be installed as shown in relation to cooling coils.

WIRING DIAGRAM

90-922

90-921

Orientation of Humidifier

to Cooling Coils

WARNING

1. ELECTRICAL SHOCK HAZARD.

Disconnect electrical power to the furnace before starting installation. Failure to do so could result in serious injury from electrical shock.

SHARP EDGES HAZARD. Sharp

edges may cause serious injury from cuts. Use care when making plenum openings and handling ductwork.

RISK OF SCALDING. Water

temperature over 125°F can cause severe burns and scald instantly. Shut off the hot water supply before disconnecting or tapping into any hot water supply line.

SPECIFICATIONS

HUMIDIFIER DIMENSIONS

Width 15

⁄32”

Height

(including solenoid valve

and drain spud)

18”

Depth 10

⁄32”

PLENUM OPENING

⁄4”W x 145⁄16”H

WATER FEED RATE

6 gph

ELECTRICAL DATA

120 VAC-60 Hz, 0.8 AMP

CAUTION

1. Do not install humidifier where freezing temperatures could occur. The water line could freeze and crack causing water damage to the home.

2. Do not install humidifier on the furnace cabinet.

3. Do not install humidifier on a plenum face where the blanked off ends of the cooling coil will restrict air movement through the humidifier.

4. Do not set humidity level above recommended or to recommended level if condensation exists on inside windows of any unheated space, as condensation damage may result. Excess humidity can cause moisture accumulation which can allow the possibility for mold growth in the home.

5. Do not connect the humidifier power cord to multi-speed furnace blower motors or blower motors other than 120 VAC. Premature component failure may result. Use Model S1-HURELAY24VAA Current Sensing Relay.

6. When installing Manual Humidifier Control on a downflow furnace, ensure blower continues to run after a heat call is satisfied to eliminate high temperatures from damaging the Control.

7. Do not install humidifier where water pressure exceeds 125 psi, since damage to the humidifier may result. Follow codes in effect concerning pressure reduction.

8. Do not install humidifier on the supply plenum where static pressure exceeds 0.4 in. wg.

RISK OF PROPERTY AND EQUIPMENT DAMAGE.

BLANKED OFF

END OF COIL

NOTES

1. The humidifier is not suitable for installation on ducts with horizontal airflow. Performance will be reduced.

2. When installing humidifier on a heat pump system, use hot water. The heated water supplements the reduced supply air temperature as added heat for evaporation.

TEMPLATE MUST BE LEVEL

RETURN

HOT WATER

SUPPLY

90-1109Y

Automatic Humidifier Control

For detailed Automatic Humidifier Control

installation and wiring instructions,

see separate sheet included with Control.

IMPORTANT

WHEN MODEL S1-HURELAY24VAA CURRENT SENSING RELAY IS USED:

• WIRE CURRENT SENSING RELAY INTO 24 VAC HUMIDIFIER CONTROL CIRCUIT ONLY! DO NOT

INSTALL IN TRANSFORMER PRIMARY CIRCUIT.

IMPORTANT

USE 120 VAC POWER SOURCE OTHER THAN FURNACE MOTOR CIRCUIT. HOWEVER, THE TRANSFORMER CAN BE POWERED OFF THE HOT 120 VAC LINE BEFORE IT ENTERS THE FURNACE.

• DO NOT WIRE TRANSFORMER INTO FURNACE BLOWER CIRCUIT.

SHUT-OFF

(SADDLE VALVE)

MANUAL

HUMIDIFIER CONTROL

WATER SUPPLY

120 VAC OUTLET

CONNECT DRAIN LINE HERE

COMMON

BROWN WIRES

MODEL S1-HURELAY24VAA

CURRENT SENSING RELAY (IF REQUIRED)

FURNACE

BLOWER MOTOR

READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING

TEMPLATE MUST BE LEVEL

– TOP –

READ REVERSE SIDE FIRST! READ REVERSE SIDE FIRST!

Form 358009 10007597 B2204318A 1.08

90-888

FURNISHED ITEMS

24 VAC Manual Humidifier Control

Saddle Valve

Humidifier Installation Template

Mounting screws

(sheet metal screws)

Water supply line (1⁄4” copper)

Drain line (1⁄2” I.D. hose)

Low voltage wire

Manual Humidifier Control

Adapter Plate Part No. S1-4039

Model S1-HURELAY24VAA Current

Sensing Relay (if required)

ITEMS NOT FURNISHED

IMPORTANT! Be sure owner’s manual containing instructions for

operation and warranty information is given to owner in order to avoid unnecessary

calls. Warranty is void unless humidifier is installed by qualified heating and air

conditioning contractor due to possible misapplication of product.

PARTS LIST

1. Front Cover

2. Base

3. Orifice Plate

4. Motor Mount Bridge

5. Scale Control Insert

6. Humidifier Pad

7. Water Distribution Tray

8. Fan Blade

9. Motor

10. Motor Mount Gasket

11. Control Circuit Board

12. Power Cord

13. Strain Relief Bushing

14. Solenoid Valve

15. Connector Plug

16. Feed Tube

NOTE: BEFORE LEAVING THE JOB SITE, MAKE SURE:

1. Saddle valve is fully open.

2. All plumbing connections are watertight.

3. Humidifier functions properly.

1. Place the humidifier on a flat surface.

Unlatch humidifier cover assembly from base assembly at the bottom of the cover, lift and set aside. Pull out the evaporative assembly by grasping at the top and tipping out. (See Figure 1)

2. Using a level, position this template at

least 1

⁄ 2 inches above the furnace housing or cooling coil if applicable, for clearance of the drain line. Trace around template edges. When there is insufficient space on the supply plenum, the humidifier can be installed on the return duct provided the humidifier is supplied with hot water. Remove the template and accurately cut the plenum opening 14

⁄4”W x 145⁄16“H, being careful

to avoid injury from sharp edges.

3. Position the two plastic hooks on the

top of base along the top edge of the plenum opening. Push base up to engage the two hooks and sheet metal along the top edge opening. Push base in and slide down so that the bottom four hooks engage the sheet metal at the bottom edge of the opening. Secure base to

opening using top three screw holes in housing. An additional hole is provided at the bottom for securing the base to the plenum. (See Figure 2)

4. While pressing the base against the

plenum, reach through the center opening and turn left and right swing latches down to secure the base onto the plenum.

(See Figure 3)

5. Reinstall the evaporative assembly into

the base, with the bottom of the scale control insert (5) sitting firmly in the inside of the drain spud attached to the base. Push the evaporative assembly in at the top between the retaining ribs that hold the assembly in place in a vertical position. Reinstall cover assembly by hooking at the top of base assembly and latching at the bottom.

6. Locate and install the Manual Humidifier

Control by following the instructions shown in step #6A. For Automatic Humidifier Control installation instructions, see separate sheet included with the Automatic Control. DISCONNECT ELECTRICAL POWER

TO FURNACE BEFORE PROCEEDING!

6A. MANUAL HUMIDIFIER CONTROL INSTALLATION INSTRUCTIONS:

The Manual Humidifier Control is designed for low voltage service to control humidification equipment. An increase in relative humidity expands the nylon ribbon that opens the control switch to stop operation of the humidifier. A decrease in relative humidity reverses the process and closes the control switch.

LOCATION

1. Locate on inside wall of living area approximately 5 feet above floor, or in the furnace return air plenum. Adapter Plate Part No. S1-4039 (not included) is required for return plenum air installation. If humidifier is mounted on return duct, Humidifier Control must be at least 6” upstream of humidifier.

2. Do not locate Control in the direct path of furnace discharge air or drafts from open doors and windows.

3. Do not install where operation might be affected by lamps, sunlight, fireplace registers, radiators, concealed air ducts and pipes, or room occupants.

4. The basic rules for location of thermostats also apply to humidifier controls.

GENERAL INSTRUCTIONS

1. Do not attempt to repair or recalibrate

Humidifier Control. Humidifier Controls requiring service should be returned to your distributor.

2. Use Humidifier Control in low voltage (24 VAC) applications only. Install 24 VAC wiring to Humidifier Control as shown in Wiring Diagram, opposite side.

3. Make sure no bare wires are exposed or insulation damaged. Insulation on wire should extend to head of screws.

4. Make sure all splices are mechanically and electrically secure.

5. To remove dirt or other foreign matter from nylon ribbon and control interior, dust lightly with a fine, soft brush.

7. The humidifier power cord must be

plugged into a 120 VAC outlet. Wire an electric outlet box to power source other than furnace fan motor circuit. Outlet box can be powered off of the 120 VAC line before it enters furnace. If furnace accessory terminals are 120 VAC, outlet box can be wired from this location. See manufacturer’s recommendations for wiring. Do not use an extension cord. Do not power 120 VAC outlet from the furnace blower circuit.

In order for the humidifier to turn on, the furnace blower must be operating and the Humidifier Control must be calling for humidity. The interface between the humidifier and the furnace to detect blower operation can be accomplished several different ways:

A. If the humidifier is plugged into a 120 VAC outlet that is powered only when the furnace is on, then the brown wires from the humidifier can be connected directly to the Manual Humidifier Control.

B. If the humidifier is plugged into a continuously powered 120 VAC outlet, then a Model S1-HURELAY24VAA Current Sensing Relay (not included) must be installed in the humidifier circuit. (Brown wires connected to Manual Humidifier Control.)

8. Tap into water supply line with the saddle valve

furnished. See instructions on saddle valve package. The humidifier will function with cold, hot, softened or unsoftened water. The use of service hot water (140°F MAX.) and constant blower operation will provide maximum evaporative capacity. When installing

humidifier on heat pump system, humidifier must be supplied with service hot water.

NOTE: The saddle valve is designed to be fully opened or closed. Do not use it to regulate water flow.

9. Connect tubing from the saddle valve to the inlet side

of the solenoid valve using

⁄ 4” O.D. copper tubing (not

furnished). DOUBLE WRENCH TO PREVENT LEAKING!

(See Figure 4)

10. Drain spud is designed to accept

⁄ 2” I.D. plastic hose (not furnished). Run drain line from drain spud to floor drain. CAUTION: If hose clamp is used, do not

overtighten, drain spud could crack. Be sure drain line has continuous slope. NOTE: Do not sweat or directly attach metal drain line to fitting. Do not use solvent type adhesives when connecting plastic drain line, since damage to fitting could result.

11. Open saddle valve completely and turn on furnace.

Turn up Humidifier Control so that humidifier will turn on. Allow humidifier to run until water is observed coming out of the drain line. Check to see if humidifier and saddle valve are watertight. Check operation to make sure that all electrical components function properly. Set Humidifier Control to level recommended in Owner’s Manual.

Figure 1

90-923 90-924 90-925 90-926

Figure 2 Figure 3 Figure 4