KING H412 2/3-FS-GW, H612 4/5-FS-GW, H612 6/8-FS-GW, H412 3/4-FS-GW Instructions For Use Manual

GENERAL INFORMATION

H SERIES

Hydronic Wall Heaters

DANGER

ELECTRIC SHOCK OR FIRE HAZARD

READ ALL WIRE SIZING, VOLTAGE REQUIREMENTS AND SAFETY
DATA TO AVOID PROPERTY DAMAGE AND PERSONAL INJURY

SAVE THESE INSTRUCTIONS

412 shown

tested to: 1995 standards

WARNING

READ CAREFULLY - These instructions were written to help prevent diffi culties that might arise during installation of this
heater. Studying the instructions fi rst may save you considerable time and money later. Observing the following procedures
will cut the installation time to a minimum. King encourages you to save these instructions for future reference.

Thank you for buying this King H series heater. It should provide years of trouble-free service and comfort to your home.
Please inspect the package to ensure the heater coil and fan, with cover and screws to attach it to the wallbox, are included.

Here are a few tips in getting the heater installed correctly!

1. LOCATION: If possible fi nd a location that is not on an outside wall - this will maintain the insulation value of your home and reduce cold air
leaks that come from gaps in the outside wall. Mount the heater in a location that will not have furniture blocking the front of the unit within
2 feet - a corner wall is ideal. Blowing heat towards the coldest part of the room (like a window) is best. To heat the room evenly warm air needs
to circulate freely without obstructions.

2. BEDROOMS: A good location for a heater in a bedroom is just to the inside of the door of that room, blowing heat towards a cold glass window.
The thermostat should be located just above the light switch, with the heater in a stud bay over from the thermostat. Many times this one
stud bay over is not possible due to very small bedrooms, where the thermostat will be in the same stud bay as the heater. Temperature control
and accuracy will suffer in this instance due to the coils giving off convected heated air, the heated air moving up the wall where it will then effect
the thermostat’s sensors.

3. LIVING ROOMS: Mount the heater in a location that will not have furniture blocking the front of the unit within 2 feet. Often, a corner wall is ideal
because it is a traffi c area with less chance of furniture placement. Blowing heat towards the coldest part of the room (like a large window area)
is best. Mount thermostat near a light switch for that room if it is in an open area.

4. MOUNTING: The heater should be located a minimum of 4 inches off a fi nished fl oor, although, to dramatically reduce the lint and dust intake,
up to 10 inches off the fl oor. However, too high placement on a wall may change the visual appearance of the product. King further recom
mends placement 4 inches from any side wall longer than 18 inches, and 8 inches below a ceiling or shelf that protrudes more than 6 inches.

5. THERMOSTATS: Only King model HB / HBP or HW / HWP / HWPT-120 thermostats are designed to control this heater. Any other line voltage
electric heat thermostats will not control the pump and fan in a sequential preheat start up, nor have a defi nate off for both fan and pump.
Standard bi-metal electric heat thermostats are not designed for, and should never be used for, control of hydronic fan heating. A King
H series thermostat should not, when possible, be mounted above the fan coil heater, instead off to the side, where the convective heat from the
coils will not effect the temperature sensing when the fan heater is off. For best performance, pipes running to the heater (if they enter in to the
thermostat’s stud bay) should not have a total combined length (inlet / outlet) of over 10 feet, and, should not be closer than 16 inches in
any direction the the thermostat’s junction box in that stud bay. If the thermostat must be in the stud bay with the heater the thermostat should
be mounted on the left side of the stud bay as that side has no heat fi ns thereby having the least impact on thermostat accuracy.

KING ELECTRICAL MFG. COMPANY · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH: 206.762.0400 · FAX: [phone] · www.king-electric.com

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SAVE THESE INSTRUCTIONS

INSTALLATION INSTRUCTIONS

Following are installation guidelines:

• Disconnect power at main panel.

• Make certain all wiring is in accordance with all local codes.

• Ensure units are properly grounded.

• Heater voltage rating should be the same as supply load.

1. The heater should be located a minimum of 4 inches off a fi nished fl oor, although, to dramatically reduce the lint and dust intake, mount up to 10 inches off the
fl oor. However, too high of placement on a wall may change the visual appearance of the product. King further recommends placement of 4 inches from any side
wall longer than 18 inches, and 8 inches below a ceiling or shelf that protrudes more than 6 inches. Screws or nails can be used to secure the can to the studs.
The wall can should take up the room of a standard 2 x 4 stud cavity. If deeper than a 2 x 4 stud wall make sure the can reveals itself outside the fi nished wall
by ¾". Make sure the “Up” sticker is clearly observed in the can and on the grill.

2. Feed the power to the center of the can, with a maximum of 15 Amp circuit protection. Provide a ½" strain relief and follow all local and national electrical
codes for wire sizing and proper connection. Aluminum wire will require special connectors and preparation to the connections for a safe connection.

3. Feed both the water lines to the upper left corner of the can. Offset 5/8" threaded copper pipe fi ttings are provided for easy hook up, in or out of the box.

4. Complete piping and bleed air out of coil for 5 minutes with system pump operating at maximum fl ow rate.

5. Copper coils are manufactured to be used with potable water and pressures up to 125 psi. Copper tubing used in the coil is Alloy 122 made to ASTM-B-75
specifi cations. This is the same Coper used in homes for drinking water.

6. Connect the electrical power to the motor leads selecting the speed required for the application. The white wire is the common lead, black is high speed and red is
low speed. Use only two leads, white and black for high speed or white and red for low speed. Connect the green groundwire to the bare groundwire.

7. A proper thermostat per heater should be used to maintain and provide the best comfort and energy effi ciency from your King heaters. King requires the use of
King models HW120, HWP120, and one timer thermostat per system, the HWPT120, as they were specifi cally designed for use with the heater. King thermostat
models HB and HBP are also approved for use.

8. Test fan coil for motor operation and check for leaks at pipe connections.

9. Place grille on, using the 2 screws provided. Do not over tighten.

WATER TEMPERATURE AND AIR FLOW RATES

FT. OF WATER

MODEL*

H412 2/3 4 .36 .54 2000 80 High Speed 1,800 2,500 3,600 3,500 4,100
H412 2/3 4 .36 .51 1750 50 Low Speed 1,200 1,400 1,700 2,000 2,300
H412 3/4 8 .54 .54 2000 80 High Speed 2,200 3,100 4,000 4,800 6,100
H412 3/4 8 .54 .51 1750 50 Low Speed 1,200 1,800 2,400 3,000 3,800
H612 4/5 4 .36 .48 2550 120 High Speed 3,600 4,700 5,800 7,100 8,500
H612 4/5 4 .36 .40 1850 105 Low Speed 3,200 4,000 5,000 6,100 7,300
H612 6/8 8 .54 .48 2500 120 High Speed 4,100 6,000 7,600 9,100 10,500
H612 6/8 8 .54 .40 1850 105 Low Speed 3,700 5,200 6,500 7,900 9,600

* Most common operating temperatures

FINS PER INCH

PRESSURE

DROP @ 2 GPM

AMPS RPM CFM BTU@2GPM 120°

140°

160°*

*

180° 200°

KING ELECTRICAL MFG. COMPANY · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH: 206.762.0400 · FAX: [phone] · www.king-electric.com

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Electrical Circuit Sizing

Maximum 15 Amps
circuit breaker or fusing

CAUTION

The heater should not be covered or blocked in any manner.

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