3
CONTENTS
1. WARNINGS ............................................................. 4
Pay Attention to These Terms .................................4
2. GENERAL SAFETY ................................................ 5
Time/Temperature Relationships in Scalds .............5
3. BEFORE INSTALLATION ...................................... 6
Product Receipt.......................................................6
Model Identification .................................................6
Ratings and Certifications .......................................6
Installations at Elevation .........................................6
Component Locations .............................................7
4. INSTALLATION ....................................................... 8
Installation Codes....................................................8
Equipment Base ......................................................8
Clearances ..............................................................8
Combustion and Ventilation .................................. 11
Conventional Combustion Air Supply ....................12
Water Piping ..........................................................13
Hydronic Heating...................................................15
Domestic Hot Water ..............................................17
Gas Supply............................................................19
Electrical Power Connections ...............................20
Field Wiring Connection ........................................22
Venting - General ..................................................24
Venting Installation Tips ........................................26
Venting Configurations ..........................................26
Vertical Venting (Category IV) ...............................26
Horizontal Through-the-Wall Direct Venting
(Category IV) ...............................................28
Direct Vent—Vertical ............................................30
Outdoor Installation ...............................................30
5. CONTROLS ........................................................... 31
Ignition Control Functions .....................................31
6. WIRING DIAGRAM ............................................... 40
7. START-UP .............................................................. 41
Pre Start-up ...........................................................41
Pre Start-up Check................................................41
Initial Start-up ........................................................41
Preparation............................................................42
Start-Up .................................................................42
Blower Check ........................................................43
Post Start-Up Check .............................................45
8. OPERATION .......................................................... 46
Lighting Instructions ..............................................46
To Turn Off Gas To Appliance ...............................46
9. TROUBLESHOOTING ......................................... 46
MVB Error Codes ..................................................46
Heater Errors.........................................................46
Heater Faults.........................................................46
MVB Fault Text ......................................................47
10. MAINTENANCE .................................................... 49
Suggested Minimum Maintenance Schedule ........ 49
Preventive Maintenance Schedule........................50
11. ILLUSTRATED PARTS LIST ............................... 52
Summary of Contents for Raypak MVB 1003A
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