4
PART ONE
OWNER'S OPERATING INSTRUCTIONS
4
SECTION 1
START-UP PROCEDURES
4
Before Start-Up
5
Lighting Instructions & Shut-Off Procedures -
Manually Lighted Pilots MV
6
Operating Instruction & Shut-Off Procedures -
Automatically Lighted Pilots IID
7
After Start-Up
7
SECTION 2
CAUTION
8
SECTION 3
MAINTENANCE & CARE PROCEDURES
8
Pool & Spa Water Chemistry
8
Automatic Chlorinators & Chemical Feeders
9
Cold Weather Operation
9
Winterizing the Pool & Spa Heater
10
PART TWO
INSTALLATION & SERVICE INSTRUCTIONS
10
SECTION 1
RECEIVING EQUIPMENT
11
SECTION 2
GENERAL SPECIFICATIONS
11
SECTION 3
INSTALLATION INSTRUCTIONS
11
Code Requirements
12
Clearances
12
Outdoor Heater Installation
14
Florida Building Code 2001
15
Indoor Heater Installation
15
Outdoor Stack/Indoor Stack
16
Atmospheric Specifications and Dimensions
17
Lo NOx Specifications and Dimensions
18
Combustion and Ventilation Air
18
Vent Piping
19
Gas Supply Connections
20
Gas Pressure Regulator
20
Gas Pressure Adjustment Locations
20
Pipe Sizing For Gas Connections
21
Flow Rates
21
Heat Exchanger Pressure Drop Tables
22
Polymer Headers
22
Cast Iron Headers
22
Unitherm Governor Operation
23
Internal Automatic Bypass Valve
23
External Auxiliary Bypass Valve
23
Auxiliary Bypass Valve Adjustment
23
Pressure Relief Valve Installation
24
Plumbing—Water Connections
25
Heat Exchanger Reversal Procedure
26
Electrical Wiring
26
Millivolt Models
26
Digital Models
27
Transformer Wiring
28
Wiring Diagram - Millivolt (Mechanical Therm.)
29
Wiring Diagram - Digital Models, Atmospheric
30
Wiring Diagram - Digital Models, Lo NOx
31
SECTION 4
SERVICING INSTRUCTIONS
31
General Location of Controls
32
Control Panel Removal
32
Control Adjustments - Digital and AFT Models
32
Control Adjustments - Millivolt Models
33
Thermostat Operation - Digital Board
35
Diagnostics
35
Codes
35
Reading a Fault
36
Remote Control Installation and Operation
36
Remote Operation
36
Activating the Remote
37
Thermostat Operation - AFT Board
39
Status and Diagnostics
40
Remote Control Installation and Operation
40
Remote Operation
40
Activating the Remote
41
Remote Control Wiring
41
2-Wire Remote Control
41
3-Wire Remote Control
42
Time Clock / Fireman’s Switch
42
Water Pressure Switch
42
Flame Roll-Out Safety Switch
42
High Limits
43
Pilot Safety
43
Burner Tray Removal (ATM)
43
Gas Valve Removal (ATM)
43
Main Burner and Orifice Removal (ATM)
43
Pilot Removal and Cleaning
44
Heat Exchanger Removal
44
Tube Cleaning Procedure
44
Desooting Procedure
44
Combustion Chamber Removal
44
Immersion Well Replacement
45
Unitherm Governor (U.G.) Replacement
45
Lo NOx Pool Heaters
45
Operation
45
Start-Up Procedures
45
Visual Inspection
45
Electrical
45
Flame Roll-Out Safety Switch
46
Burner Tray Removal
46
Gas Valve Removal
46
Main Burner and Orifice Removal
46
Pilot Removal
46
Combustion Blower Removal
47
SECTION 5
TROUBLESHOOTING
48
Electrical - Standing Pilot Millivolt
49
Electrical - Electronic Ignition (IID)
50
Digital/AFT Control Logic - Flow Chart
51
SECTION 6
REPLACEMENT PARTS
52
Illustrated Parts List
55
Part Numbers
3
CONTENTS
Summary of Contents for 206A
Page 28: ...28 WIRING DIAGRAM MILLIVOLT MECHANICAL THERMOSTAT ...
Page 29: ...29 WIRING DIAGRAM DIGITAL MODELS ATMOSPHERIC ...
Page 53: ...53 LO NOx HEATERS ...
Page 60: ......
