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© 2008 Aqua-Hot

®

 375-D Hydronic Heating System Installation Manual  Rev. A

section 2:  aqua-Hot Installation

Installing the Mounting Tray and the Aqua-Hot:

The Aqua-Hot must be installed in a compartment that is 

completely closed-off  from living quarters and accessible 

only from the outdoors.

1. 

Reference the following illustrations for mounting 

information:

    •

 

Overall Aqua-Hot dimensions - Figure 7

    •  Mounting tray information - Figure 5

    •  I.D. Label noting the “Open Access” 

      clearance requirement for the front of the heater 

      - Figure 2

    •  Service access clearances - Figure 6

2. 

Cut out the required mounting tray opening.  Reference 

Figure 5.

3. 

Install the mounting tray flange into the cut-out open

-

ing.  Reference Figure 5.

NOTE: 

Be sure to complete the following when installing the 

Aqua-Hot:

Inspect the area beneath the mounting location to 

• 

insure that no structural members will interfere with 

the cut-out for the mounting tray.

Verify that an adequate support system has been 

• 

provided for the Aqua-Hot.

Secure the mounting tray into place prior to install-

• 

ing the Aqua-Hot.

Remove the access cover fastener from the Aqua-

• 

Hot prior to installation of  the Aqua-Hot into the 

mounting tray.

Mount the Aqua-Hot securely into the mounting tray 

• 

to ensure that the unit does not move or shift under 

normal operating conditions.

4. 

Insert a #10 machine screw into each of  the embossed 

holes in the mounting tray (total of six required) and 

tighten to secure the mounting tray to the motorhome.

5. 

Place the Aqua-Hot into the mounting tray.  Reference 

Figure 8.

NOTE: 

Remove the bolt securing the front of the access cover 

to the mounting tray; this bolt will need to be re-in-

stalled once the total installation procedure is complete.  

Remove the access cover.

0 in.

0 in.

0 in.

Open Access

Motorhome Bay

6 in. Minimum

Access Cover

Figure 6

Содержание 375D

Страница 1: ...2008 Aqua Hot Heating Systems Inc Installation Manual...

Страница 2: ...ces 10 Mounting Requirements 10 Mounting the Heat Exchangers 11 Wiring the Heat Exchangers 13 Plumbing Requirements 14 Plumbing the Hydronic Heating System 15 Section 4 Thermostats Fresh Water Tank Th...

Страница 3: ...urging the Hydronic Heating System 31 Purging the System by Grounding the Zone Circulation Pumps 32 Purging the Domestic Water System 32 Section 11 Initial Start Up Activating the Aqua Hot 34 Appendic...

Страница 4: ...anger Warning Caution and Note boxes appearing as needed throughout this manual must be reviewed and adhered to during the in stallation procedure in order to avoid potential hazards which could resul...

Страница 5: ...each Number of Heating Zones maximum of 2 plus Bay Heat Exchanger Domestic Water Heating Capacity continuous on demand Dimensions 16 75 H x 18 W x 29 5 L Dry Weight approximately 155 lbs Wet Weight ap...

Страница 6: ...protection for the DC power supply Use a circuit breaker that cuts power at 20 Amps maximum for over current protection for the 120 VAC power supply Mount the Heater near a bay storage door so that t...

Страница 7: ...Tray Additional Cross Member for Support may be necessary CUT OUT Outline of Aqua Hot Front of Aqua Hot Motorhome Floor Outline 1 408 Typical 2 017 Typical 203 Typical 6 Places 18 129 Overall 27 249 O...

Страница 8: ...the mounting location to insure that no structural members will interfere with the cut out for the mounting tray Verify that an adequate support system has been provided for the Aqua Hot Secure the mo...

Страница 9: ...ection 2 Aqua Hot Installation Top View 18 00 27 25 Side View Front View 17 81 17 50 2 05 Side View 1 5 INCH BLACK PIPE EXHAUST FITTING 27 25 14 35 NOTE All measurements are in inches Bottom View 1 95...

Страница 10: ...lation Manual Rev A Section 2 Aqua Hot Installation Front of Mounting Tray Back of Mounting Tray Access Cover Mounting Tray Flange 1 5 inch Black Pipe Exhaust Fittings Mounting Tray Mounting Tray Moto...

Страница 11: ...the Aqua Hot in order to assist with differentiating between the separate heating zones and to aid service personnel with troubleshoot ing 1 Loosen the cable clamps on the installed cable clamp fittin...

Страница 12: ...e highest point on the Aqua Hot s boiler tank Reference Figure 11 1 Mount the expansion tank as illustrated in Figure 11 2 Connect and clamp the overflow tubing from the Figure 11 expansion tank to th...

Страница 13: ...ormation Reference Figure 13 for clearance information NOTE An accessory device is available for the Cozy Heat Ex changer for the purpose of redirecting the airflow from the heat exchanger Reference F...

Страница 14: ...Heat Exchanger Bathroom Heat Exchanger Fresh Water Tank Heat Exchanger Aqua Hot 375 D Heating System Heating Loop 1 Kitchen and Living Room Heating Zone Heating Loop 2 Bathroom Bedroom and Fresh Water...

Страница 15: ...ic Heating System Installation Manual Rev A Section 3 Hydronic Heating System Vertical Mount Horizontal Mount Mounting Tab Figure 18 3 50 in 5 50 in 1 06 in 0 38 in 2 81 in 6 50 in 10 50 in 13 69 in 6...

Страница 16: ...sure that the wire end farthest from the Aqua Hot is either attached to the last heat exchanger or covered to prevent additional connections 4 Attach each zone wire ran in step 2 to the Aqua Hot term...

Страница 17: ...routing of the plumbing lines from each heating zone to the Aqua Hot All plumbing lines should be laid as flat as possible and any extreme rises in height should be avoided to eliminate any potential...

Страница 18: ...ops Reference Figure 23 Then connect each additional heat exchanger in the same arrangement low to high 4 Connect and clamp the inlet line from the heater to the highest port on the last heat exchange...

Страница 19: ...ater Hose Coupler 3 4 inch I D PEX Plumbing Line PEX Plumbing Line 3 4 in Rubber Coupler 3 4 in Rubber Coupler Figure 24 Inlet Heating Loop Ports with installed barb fittings Outlet Heating Loop Ports...

Страница 20: ...tats Fresh Water Tank Thermostat Locations Select a location that will ensure even heat distribution throughout the fresh water storage tank bay com partment in order to prevent the domestic water and...

Страница 21: ...rmostat Mounting Once the room thermostat has been wired permanent ly mount the thermostat in place Be sure to then turn OFF both interior room thermo stats Section 4 Thermostats Room Thermostat Wirin...

Страница 22: ...er using fixture when computing pipe sizes NOTE As stated directly from the ANSI A119 2 NFPA 501C Standard on Recreation Vehicles 1993 Edition Piping Systems shall be sized to provide an adequate quan...

Страница 23: ...ameter Domestic Cold Water Inlet Section 5 Domestic Water System Figure 29 To Hot Water Faucets Domestic Hot Water OUTLET Fresh Water Storage Tank Demand Pump Domestic Cold Water INLET Arrows indicate...

Страница 24: ...d motion Switch Panel Wiring 1 Run 16 gauge wires from the switch panel to the termi nal access block NOTE It is recommended that the wire numbers in Appendix A be used when installing the Aqua Hot in...

Страница 25: ...OCATION Pin 1 Terminal Block A0 Pin 2 Terminal Block A1 Pin 4 Jump to Pin 1 Pin 6 Chassis Ground SWITCH MOUNT LOCATION Pin 1 Terminal Block D0 Pin 2 Terminal Block D1 Pin 4 Terminal Block L Pin 6 Term...

Страница 26: ...strict fuel flow thereby compromising the diesel burner s performance Fuel System Installation 1 Run two 3 8 inch fuel lines from the fuel tank inlet and outlet ports to the Aqua Hot Both fuel lines s...

Страница 27: ...375 D Hydronic Heating System Installation Manual Rev A 50 ft maximum distance 50 ft maximum distance Maximum Allowable Suction Height 7 feet Maximum Allowable Head Pressure 10 ft Figure 36 Section 7...

Страница 28: ...l Pick Up Pipe Output to the Aqua Hot s Fuel Inlet Port TOP VIEW of Fuel Filter Head Fuel Filter Input from Fuel Tank Fuel Pick Up Pipe reference Figure 27 Output to the Aqua Hot s Fuel Inlet Port ref...

Страница 29: ...thout any obstructions Angle the exhaust pipe towards the rear of the vehicle so that the exhaust fumes will naturally move away while the vehicle is in motion Use standard 2 0 inch automotive type ex...

Страница 30: ...ck pipe exhaust fittings MUST be utilized with all installations Failure to conform could create a hazardous situation and will void the Aqua Hot s ETL product listing Figure 39 Section 8 Exhaust Syst...

Страница 31: ...nstallation Manual Rev A Section 8 Exhaust System 3 inch Nipple Mounting Tray Flange 4 inch Nipple Exhaust Pipe Elbow Depth of Motorhome Bay Floor 3 inch Nipple 4 inch Nipple Mounting Tray Flange Exha...

Страница 32: ...E All electric installations systems and equipment shall comply with Article 551 Parts I and III through VI of NFPA 70 as well as the regulation of authorities having jurisdiction and CSA Standard B13...

Страница 33: ...n line Fuse Positive Power Negative Ground NOTE Reference Appendix A for specific wiring details Aqua Hot s 12 Volt DC Terminal Block Figure 43 Figure 42 120 Volt AC Terminal Block 12 Volt DC Terminal...

Страница 34: ...alve located at the front of the heater Reference Figure 45 2 Connect a piece of 1 2 inch PEX type tubing to the drain valve This piece should be long enough to trans port the antifreeze and water hea...

Страница 35: ...rce therefore disconnect the alligator clip from the ground source during the antifreeze and water heating solution filling procedure 5 Allow the circulation pump to operate for approxi mately 1 3 min...

Страница 36: ...rom the opposing wire Alligator Clip to be connected to the Blue Wire s Spade Terminal Opposite end of the Alligator Cable to be connected to a ground source Red positive wire will not be disconnected...

Страница 37: ...shutdown purge cycle 3 After the purge cycle has ended repeat once more 4 Move the diesel burner switch to the ON position and leave it on in order to activate the diesel burner NOTE It will take appr...

Страница 38: ...Wiring Diagram Appendix A...

Страница 39: ...2008 Aqua Hot 375 D Hydronic Heating System Installation Manual Rev A A 1 Appendix A Wiring Diagram...

Страница 40: ...Wire Gauge Information Appendix B...

Страница 41: ...0 3 0 4 0 4 0 4 0 4 0 50 6 6 4 4 2 2 1 0 2 0 2 0 3 0 3 0 4 0 4 0 4 0 60 6 4 4 2 2 1 0 2 0 3 0 3 0 4 0 4 0 4 0 70 6 4 2 2 1 0 2 0 3 0 3 0 4 0 4 0 80 6 4 2 2 1 0 3 0 3 0 4 0 4 0 90 4 2 2 1 0 2 0 3 0 4 0...

Страница 42: ...Antifreeze Types Appendix C...

Страница 43: ...specifically for winterizing appli cations only Although RV Marine antifreeze is often Generally Recognized as Safe by the FDA it should never be used in the Aqua Hot s Hydronic Heating System This t...

Страница 44: ...Antifreeze Mixture Water Quality Recommendations Appendix D...

Страница 45: ...e mixed antifreeze are responsible for the use of high quality distilled de ionized or soft water when preparing their antifreeze for sale Hard water possesses a high level of calcium and magnesium io...

Страница 46: ...Antifreeze Terms and Mixture Ratio Appendix E...

Страница 47: ...iling point is reached a loss of efficiency occurs because the heat produced is expelled rather than utilized for the function of the heating system Therefore a higher boiling point is desired in orde...

Страница 48: ...stallation Manual Rev A E 2 10 0 20 40 60 20 30 10 20 30 40 50 60 Freezing Point Temperature In Degrees Fahrenheit l o c y l G e n e l y p o r P f o e g a t n e c r e P n o i t u l o S n i 28 7 8 19 2...

Страница 49: ...15549 East Highway 52 Fort Lupton Colorado 80621 1 800 685 4298 Fax 303 857 9000 www aqua hot com...

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