Raypak 266A User Manual
Page 3
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
Low 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
Plumbing For Water Connections
21
Flow Rates
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
Heat Exchanger Pressure Drop Tables
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, Low NOx
31
SECTION 4
SERVICING INSTRUCTIONS
31
General Location of Controls
32
Control Panel Removal
32
Control Adjustments - Digital Models
32
Control Adjustments - Millivolt Models
33
Digital Thermostat Controls
33
Thermostat Control Operation
35
Diagnostics
35
Codes
35
Reading a Fault
36
Remote Control Installation and Operation
36
Remote Operation
36
Activating the Remote
37
Remote Control Wiring
37
2-Wire Remote Control
37
3-Wire Remote Control
38
Water Pressure Switch
38
Flame Roll-Out Safety Switch
38
High Limits
38
Pilot Safety
39
Burner Tray Removal (ATM)
39
Gas Valve Removal (ATM)
39
Main Burner and Orifice Removal (ATM)
39
Pilot Removal and Cleaning
39
Heat Exchanger Removal
40
Tube Cleaning Procedure
40
Desooting Procedure
40
Combustion Chamber Removal
40
Immersion Well Replacement
40
Unitherm Governor (U.G.) Replacement
41
Low NOx Pool Heaters
41
Operation
41
Start-Up Procedures
41
Visual Inspection
41
Electrical
41
Flame Roll-Out Safety Switch
42
Burner Tray Removal
42
Gas Valve Removal
42
Main Burner and Orifice Removal
42
Pilot Removal
42
Combustion Blower Removal
43
SECTION 5
TROUBLESHOOTING
44
Electrical - Standing Pilot Millivolt
45
Electrical - Electronic Ignition (IID)
46
Digital Control Logic - Flow Chart
47
SECTION 6
REPLACEMENT PARTS
48
Illustrated Parts List
51
Part Numbers
3
CONTENTS