3
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 .......................................................
6
Installation Codes ...................................................7
Clearances ..............................................................7
Outdoor Heater Installation .....................................7
Combustion and Ventilation Air ...............................9
Vent Piping ............................................................12
D-2 Power Vent Kit ................................................12
Gas Supply Connections.......................................13
Flow Rates ............................................................14
ProTek Shield Assembly........................................15
Unitherm Governor Operation ...............................16
Internal Automatic Bypass Valve ...........................16
External Auxiliary Bypass Valve ............................17
Auxiliary Bypass Valve Adjustment .......................17
Pressure Relief Valve Installation ..........................17
Plumbing Diagram.................................................18
Heat Exchanger Reversal .....................................19
5. ELECTRICAL WIRING ......................................... 19
Electrical Power Draw ...........................................20
Transformer Wiring ...............................................20
6. WIRING DIAGRAM ...............................................
21
7. CONTROLS ...........................................................
22
Control Panel Removal .........................................22
Control Adjustments .............................................22
Operation ..............................................................23
Status and Diagnostics .........................................25
Remote Control Installation and Operation ...........26
Remote Control Wiring ..........................................26
8. OPERATING INSTRUCTIONS ............................ 32
Before Start-Up .....................................................32
Start-Up Procedures .............................................32
9. MAINTENANCE AND CARE ............................... 34
Cold Weather Operation .......................................34
10. TROUBLESHOOTING ......................................... 35
Digital - Flow Chart................................................36
Control Logic - Flow Chart ....................................37
11. REPLACEMENT PARTS ..................................... 38
12. ILLUSTRATED PARTS LIST .............................. 39
NOTE: ProTek Shield Adapter and assembly for ASME models shown in Figures, but not available until end of Q3 2020.
