INSTALLATION AND OWNERS MANUAL ACU-HEAT Installation and Owners manual For the following HEATER model numbers: 100H, 200H, 300H, 400H, 500H, 700H and 900H Series Hydronic Heaters Approximate Installation Time: 3-5 Hours Tools Required: #2 Phillips Screw Driver; Power Drill; 7/64" Drill Bit; 1"-4" Hole Saw; Jig Saw; Hose Cutter; Wire Crimper; Teflon Plumbers Tape; Marine Sealant; Pencil.
Guidelines And Definitions These instructions contain information that is important for you to know and understand. The information provided relates to safety issues for the installation and use of our products. To help you identify important information, we use the following system. Warning – Important Safety information – A hazard that may cause an injury, serious injury, or loss of life. Caution – Information for preventing improper operation of, or damage to equipment.
Heater System 1. Layout the heater system in the boat before installation and make sure the mounting location of the heater unit and routing of all the hoses will work. Warning – Do not mount the heater unit into the bilge area or any compartment that may draw air form the bilge. Types of Heater Installation: Ducted units typically mount under the helm or in a storage area that will allow routing of the vent hoses to desired vent locations.
Engine Warning – Hot engine coolant can cause severe burns! Never open the cap on a hot radiator. Some vehicles are equipped with electric fans that may start without warning even with he engine shut off. Wait until the engine has cooled completely before installation. Note – Due to the wide variety of engine applications, the following are general instructions for a gasolinepowered engine hook-up. please call Technical Support (208) 687-4400 with your questions regarding your specific engine application.
Heater Installation 1. Locate the area(s) for mounting the hot air vents. Note – Vents should be located so the heat will blow out in a desirable direction and allow easy access for adjustments. Install them in areas that are protected from damage from gear or persons. 2. Drill or cut the proper size hole to match the vents that you are using. Heater Craft Vents: H-504, Directional Euro Vent – use 3" hole saw. H-506, Directional Louvered Vent – use 4 1/4" hole saw.
Wiring The Fan Motor 1. The wires from the heater unit are color-coded and correspond as follows. Single-speed fan motor: 3-speed fan motor: The fan motor and switch should be protected with an in-line fuse. The fuse rating should be greater than the amperage draw of the fan motor. • Red or Yellow lead – on/off switch (power source) • Black lead – ground A four-position switch is needed for full operation. The fan motor and switch should be protected with a 15-amp in-line fuse.
Testing The Installation Warning: Carbon Monoxide (CO) is emitted from the engines' exhaust. Do not run the engine without proper ventilation. Do Not run the engine in a confined space or where back drafting may occur. 1. Test the fan motor on all settings. Note – If the airflow does not correspond to the switch setting, the wires are not on the proper terminal. Refer to the wiring diagram and recheck the switch wiring. 2. Check all hot-air outlets to make sure there are no air restrictions. 3.
Optional Equipment H415 In-line Circulation Pump 1. Locate and mount the pump. Note – Do not mount he pump into bilge, or any location where it may become submerged. The warranty for the pump will be void if, upon disassembly, we determine that the pump has been submerged in water for any length of time. 2. Cut the return water hose from the heater unit. Note – The output hose is connected to the intake manifold or thermostat are (most V-8 gasoline engines).
Optional Equipment S30077 Coolant To Water Engine Heat Exchanger Note – The following are general guidelines for this type of system. 1. Locate and mount the exchanger. 2. Locate and mount the circulation pump (if required). 3. Wire the pump according to the manufacturers recommendations. 4. Cut the heater units' water/coolant hoses to length, attach them with hose clamps, and secure in place.
Frequently Asked Questions Why does my heater cool down when I'm idling? Open cooling system – The majority of applications have an open cooling system. This means that there is no pressure in the system. The water pressure is created by the engine's circulation pump. The engine must be at 1200 to 1500 rpm to create enough pressure for the circulation pump to circulate water to the heater. Location of the heater unit – In your automobile, the heater is located close behind and below the engine.
Heater Craft 2 Year Limited Warranty Heater Craft warrants your hydronic Heater* system to be free from defects in material and craftsmanship under normal use and service by the original consumer purchaser for a period of (2) two years from the date of purchase.
