4 PART ONE
OWNER'S OPERATING INSTRUCTIONS
4 SECTION 1
START-UP PROCEDURES
4 Before Start-Up
5 Operating Instruction & Shut-Off Procedures -
Automatically Lighted Pilots IID
6
After Start-Up
6 SECTION 2
CAUTION
7 SECTION 3
MAINTENANCE & CARE PROCEDURES
7 Pool & Spa Water Chemistry
7 Automatic Chlorinators & Chemical Feeders
8 Cold Weather Operation
8 Winterizing the Pool & Spa Heater
9 PART TWO
INSTALLATION & SERVICE INSTRUCTIONS
9 SECTION 1
RECEIVING EQUIPMENT
10 SECTION 2
GENERAL SPECIFICATIONS
10 SECTION 3
INSTALLATION INSTRUCTIONS
10 Code Requirements
11 Clearances
11 Outdoor Heater Installation
13 Florida and Texas Building Codes
14 Indoor Heater Installation
14 Outdoor Stack/Indoor Stack
15 Specifications and Dimensions
16 Combustion and Ventilation Air
16 Vent Piping
17 Gas Supply Connections
18 Gas Pressure Regulator
18 Gas Pressure Adjustment Locations
18 Pipe Sizing For Gas Connections
19 Flow Rates
19 Heat Exchanger Pressure Drop
20 Water Connection Installation
20 Unitherm Governor Operation
21 Internal Automatic Bypass Valve
21 External Auxiliary Bypass Valve
21 Auxiliary Bypass Valve Adjustment
21 Pressure Relief Valve Installation
22 Plumbing—Water Connections
23 Electrical Wiring
24 Transformer Wiring
25 Wiring Diagram
26 SECTION 4
SERVICING INSTRUCTIONS
2
6 General Location of Controls
26 Control Panel Removal
26 Control Adjustments
27 Thermostat Operation
29 Status and Diagnostics
30 Remote Control Installation and Operation
30 Remote Operation
30 Activating the Remote
31 Remote Control Wiring
31 2-Wire Remote Control
31 3-Wire Remote Control
32 Time Clock / Fireman’s Switch
32 Water Flow Switch
32 Flame Roll-Out Safety Switch
32 High Limits
33 Pilot Safety
33 Burner Tray Removal
33 Gas Valve Removal
33 Main Burner and Orifice Removal
33 Pilot Removal and Cleaning
34 Heat Exchanger Removal
34 Tube Cleaning Procedure
34 Desooting Procedure
34 Combustion Chamber Removal
34 Immersion Well Replacement
35 Unitherm Governor (U.G.) Replacement
36 SECTION 5
TROUBLESHOOTING
36 Mechanical
37 Control Logic - Flow Chart
38 SECTION 6
REPLACEMENT PARTS
39 Illustrated Parts List
40 Part Numbers
3
CONTENTS
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