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375D
Aqua-Hot 375D Hydronic Heating System Manuals
Manuals and User Guides for Aqua-Hot 375D Hydronic Heating System. We have
3
Aqua-Hot 375D Hydronic Heating System manuals available for free PDF download: Service Manual, Installation Manual
Aqua-Hot 375D Service Manual (120 pages)
Brand:
Aqua-Hot
| Category:
Heating System
| Size: 7 MB
Table of Contents
Table of Contents
3
General Information
6
Danger, Warning, Caution, and Note Box Definitions
6
Section 1: Introduction to the Aqua-Hot 375D
7
Technical Information
7
Label Sample
8
Aqua-Hot Heater Overview
9
Aqua-Hot Operational Flow-Chart
12
Antifreeze and Water Heating Solution
13
Section 2: Interior Switch Panel
15
Diesel-Burner Switch
15
Electric Element Switch
15
Switch Panel Wiring Schematic
16
Section 3: Exhaust System Exhaust System Requirements
19
Section 4: Aqua-Hot Components
20
Interlock Switch
20
Float Switch
21
Diesel Burner Control Thermostat
22
Electric Element Control Thermostat
24
Electric Element High Limit Thermostat
26
Diesel Burner High Limit Thermostat (Left)
27
Diesel Burner High Limit Thermostat (Right)
28
Low Temperature Cutoff Thermostat
29
Interior Heating Zone Check Valve
30
Domestic Water Tempering Valve
32
Interior Heating Zone Circulation Pumps 1
33
Stir Pump (Circulation Pump #2)
35
Electric Heating Element
36
Electric Heating Element A.C. Relay
38
Interior Heating Zone Relay - Fans
40
Interior Heating Zone Relay - Pumps
40
Section 5: Filling/Draining the Aqua-Hot 375D with Heating Solution
42
Filling the Aqua-Hot
42
Wiring Schematic
43
Draining the Aqua-Hot
45
Section 6: Diesel-Burner
46
General Recommended Maintenance
46
General Component Overview
47
Diesel-Burner Operational Overview
48
Label Sample
50
Controller Plug
51
Controller Wiring Schematic
54
Section 7: Detaching and Reattaching the Diesel-Burner
55
Detaching the Diesel-Burner
55
Reattaching the Diesel-Burner
55
Section 8: Diesel-Burner Components and Repair Information
63
Diesel-Burner Component Overview
63
Mounting Gasket
64
Air-Tube Assembly
64
Fuel Nozzle
65
Igniter Assembly
67
Ignition Electrode Adjustment and Cleaning
68
Ignition Module Assembly
70
Igniter Gasket Kit
71
Flame Sensor and Flame Sensor Socket
73
Fuel-Supply Tube Assembly
75
Fuel Pump Assembly
75
Cord-Set
78
Air Shutter
79
Air Band
81
Escutcheon Plate Spline Nut
83
Escutcheon Plate
84
Air Guide
85
Coupling
87
Blower Wheel
88
Blower Motor
89
Diesel-Burner Controller
93
Section 9: Switch Panel Blinking Fault Indicator Light
94
Diesel-Burner Fault Codes
94
Section 10: Troubleshooting
97
The Diesel-Burner Switch Has Been Turned On; However, the Diesel-Burner Fails to Operate
97
The Diesel-Burner Switch Has Been Turned on and the Diesel-Burner's Blower Motor Has Begun to Operate; However, the Diesel-Burner Does Not Ignite
98
The Diesel-Burner Switch Has Been Turned On; However, Multiple Attempts Are Required before the Diesel-Burner will Ignite
98
The Aqua-Hot's Exhaust System Sputters While the Diesel-Burner Is Operating
98
The Aqua-Hot's Exhaust System Produces White Smoke after Ignition
98
The Aqua-Hot's Exhaust System Produced Black Smoke after Ignition
98
The Aqua-Hot Is Operating, but an Interior And/Or Fresh Water Tank Heating Zone Is Not Working
99
The Aqua-Hot Is at Operating Temperature; However, the Interior And/Or Fresh Water Tank Heat Exchanger Fans Are Not Operating
99
The Aqua-Hot Is Operating, but the Domestic Hot Water System Is Not Producing Hot Water
99
The Electric Element Switch Has Been Turned On; However, the Aqua-Hot's 120 Volt-AC Electric Heating Element Does Not Operate
100
Appendix A: Wiring Diagram
101
Appendix B: Wire Gauge Chart
104
Appendix C: Winterization Process
105
Appendix D: Extreme Cold Weather Operation
106
Appendix A: Annual Maintenence
110
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Aqua-Hot 375D Installation Manual (56 pages)
hydronic (water based) heating system, and a tank-less hot water system
Brand:
Aqua-Hot
| Category:
Water Heater
| Size: 4 MB
Table of Contents
Installation Manual
1
Table of Contents
3
Aqua-Hot 375-D Installation Manual
5
Introduction
5
Section 1: Aqua-Hot Hydronic Heating System
6
Technical Information
6
Section 2: Aqua-Hot Installation
10
Installing the Mounting Tray and the Aqua-Hot
10
Overall Aqua-Hot Dimensions
10
Installing the Cable-Clamp Fittings
14
Installing the Wires into the Terminal Blocks
14
Installing the Expansion Tank
15
Section 3: Hydronic Heating System
16
Heat Exchanger Location and Clearances
16
Heat Exchanger Mounting Requirements
16
Mounting the Heat Exchangers
17
Sample Heating System Floorplan
19
Wiring the Heat Exchangers
20
Plumbing Requirements
22
Plumbing the Hydronic Heating System
23
Section 4: Thermostats
26
Fresh Water Tank Thermostat
26
Room Thermostats
27
Section 5: Domestic Water System
28
Domestic Water System Requirements
28
Domestic Water System Plumbing
28
Section 6: Switch Panel
30
Switch Panel Location
30
Switch Panel Mounting
30
Switch Panel Wiring
30
Section 7: Fuel System
32
Fuel Filter Location
32
Fuel System Requirements
32
Fuel System Installation
32
Section 8: Exhaust System
35
Exhaust System Requirements
35
Installing the Exhaust System
35
Section 9: Power Source Wiring
39
Connecting the 12 Volt-DC Power
39
Connecting the 120 Volt-AC Power
39
Installing the Wires into the Terminal Blocks
39
Section 10: Purging the Systems
41
Purging the Hydronic Heating System
41
Purging the System by Grounding the Zone Thermostat Connection
42
Purging the Domestic Water System
43
Terminal Block
43
Section 11: Initial Start-Up
46
Activating the Aqua-Hot
46
Appendices
47
Appendix A: Wiring Diagram
47
Appendix B: Wire Gauge Information
48
Appendix C: Antifreeze Types
49
Appendix D: Antifreeze Mixture Water Quality Recommendations
49
Appendix E: Antifreeze Terms and Mixture Ratio
50
Appendix F: Measuring Propylene Glycol Using a Refractometer
52
Aqua-Hot 375D Installation Manual (49 pages)
Brand:
Aqua-Hot
| Category:
Water Heater
| Size: 4 MB
Table of Contents
Installation Manual
1
Table of Contents
2
Aqua-Hot 375-D Installation Manual
4
Introduction
4
Section 1: Aqua-Hot Hydronic Heating System
5
Technical Information
5
Section 2: Aqua-Hot Installation
8
Installing the Mounting Tray and the Aqua-Hot
8
Overall Aqua-Hot Dimensions
8
Top View
9
Front View
9
Installing the Cable-Clamp Fittings
11
Installing the Wires into the Terminal Blocks
11
Installing the Expansion Tank
12
Section 3: Hydronic Heating System
13
Location and Clearances
13
Mounting Requirements
13
Mounting the Heat Exchangers
14
Wiring the Heat Exchangers
16
Plumbing Requirements
17
Plumbing the Hydronic Heating System
18
Section 4: Thermostats
20
Fresh Water Tank Thermostat
20
Room Thermostats
21
Section 5: Domestic Water System
22
Domestic Water System Requirements
22
Domestic Water System Plumbing
22
Section 6: Switch Panel
24
Switch Panel Location
24
Switch Panel Mounting
24
Switch Panel Wiring
24
Section 7: Fuel System
26
Fuel Filter Location
26
Fuel System Requirements
26
Fuel System Installation
26
Section 8: Exhaust System
29
Exhaust System Requirements
29
Installing the Exhaust System
29
Section 9: Power Source Wiring
32
Connecting the 12 Volt-DC Power
32
Connecting the 120 Volt-AC Power
32
Installing the Wires into the Terminal Blocks
32
Section 10: Purging the Systems
34
Purging the Hydronic Heating System
34
Purging the System by Grounding the Zone Circulation Pumps
35
Purging the Domestic Water System
35
Section 11: Initial Start-Up
37
Activating the Aqua-Hot
37
Appendices
38
Appendix A: Wiring Diagram
38
Appendix B: Wire Gauge Information
40
Appendix C: Antifreeze Types
42
Appendix D: Antifreeze Mixture Water Quality Recommendations
44
Appendix E: Antifreeze Terms and Mixture Ratio
46
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