Raypak 266, Installation And Operation Manual

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CONTENTS
1. WARNINGS ............................................................. 4
Pay Attention to These Terms ................................. 4
2. WATER CHEMISTRY ............................................. 5
Automatic Chlorinators and Chemical Feeders ....... 5
3. BEFORE INSTALLATION ...................................... 6
Receiving equipment ...............................................6
Rating and certifications ..........................................6
Elevation .................................................................6
Ambient Temperature Rating ..................................6
4. INSTALLATION ....................................................... 7
Installation Codes .................................................... 7
Clearances .............................................................. 7
Outdoor Heater Installation ..................................... 8
Combustion and Ventilation Air ............................. 11
Vent Piping ............................................................ 14
D-2 Power Vent Kit ................................................ 14
Gas Supply Connections ....................................... 15
Flow Rate .............................................................. 17
ProTek Shield Assembly ........................................ 18
Unitherm Governor Operation ............................... 19
Internal Automatic Bypass Valve ........................... 19
External Auxiliary Bypass Valve ............................ 19
Auxiliary Bypass Valve Adjustment ....................... 20
Pressure Relief Valve Installation .......................... 20
Heat Exchanger Reversal ..................................... 20
Plumbing Diagrams ............................................... 21
5. ELECTRICAL WIRING ......................................... 22
Millivolt Models ("M" suffix) ................................... 22
Digital Models ("E" suffix) ...................................... 22
Electrical Power Draw ........................................... 23
Transformer Wiring ............................................... 23
6. WIRING DIAGRAM - MILLIVOLT ....................... 24
7. WIRING DIAGRAM - DIGITAL ............................ 25
8. CONTROLS ........................................................... 26
Control Panel Removal ......................................... 26
Control Adjustments - Millivolt Models .................. 26
Control Adjustments – Digital Models ................... 27
Operation .............................................................. 27
Status and Diagnostics ......................................... 29
Remote Control Wiring - Digital Models Only ........ 30
9. OPERATING INSTRUCTIONS ............................ 36
Before Start-Up ..................................................... 36
Start-Up Procedures ............................................. 36
Visual inspection ................................................... 36
Water Pressure Switch .......................................... 36
10. MAINTENANCE AND CARE ............................... 39
Cold Weather Operation ....................................... 39
11. TROUBLESHOOTING ......................................... 40
Millivolt - Flow Chart .............................................. 41
Digital - Flow Chart ................................................ 42
Control Logic - Flow Chart - Digital ....................... 43
12. REPLACEMENT PARTS ..................................... 44
13. ILLUSTRATED PARTS LIST .............................. 45
NOTE: ProTek Shield Adapter and assembly shown for ASME models in Figures, but not available until March 2020.
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