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Raypak
Gas Heater
407A
Raypak 407A User Manual
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31
SECTION
4
-
SERVICING
INSTRUCTIONS
GENERAL LOCA
TION
OF
CONTROLS
A
TMOSPHERIC
LO
NOx
Digital Thermostat
Circuit Board
Drain Plug
(Located in
rear
header)
Unitherm Governor
Mounted On
T
op
Of Header
HL1 -
High
Limit
H
L2 -
High
Limit
Pressure Switch
T
emp Sensor/Well
Pilot
Roll-Out
Switch
Gas V
alve
T
ransformer
Draw Plug
Drain Plug
(Located in
rear
header)
Unitherm
Governor
Mounted On
T
op
Of Header
HL1 -
High
Limit
HL2 -
High
Limit
Pressure Switch
T
emp
Sensor/Well
Pilot
Roll-Out
Switch
(Manual)
Gas V
alve
T
ransformer
Draw Plug
Air
Switch
Blower
Hose
Blower
Digital Thermostat
Circuit Board
30
32
Table of Contents
Default Chapter
3
Table of Contents
3
4 Section 1
4
Part One
4
Owner's Operating Instructions
4
Start-Up Procedures
4
Before Start-Up
4
Lighting Instructions & Shut-Off Procedures
5
Millivolt System
5
Electronic Ignition System
6
Operating Instructions
6
After Start-Up
7
7 Section 2
7
Section
7
Pool & Spa Water Chemistry
8
Automatic Chlorinators & Chemical Feeders
8
Cold Weather Operation
9
Winterizing the Pool & Spa Heater
9
Part Two
10
Section
10
11 Section 3
11
11 Section 2
11
Receiving Equipment
11
General Specifications
11
Installation Instructions
11
Code Requirements
11
Clearances
12
Outdoor Heater Installation
12
Florida Building Code 2001
14
Indoor Heater Installation
15
Outdoor Stack/Indoor Stack
15
Combustion and Ventilation Air
18
Vent Piping
18
Gas Supply Connections
19
Gas Pressure Regulator
20
Gas Pressure Adjustment Locations
20
Pipe Sizing for Gas Connections
20
Flow Rates
21
Heat Exchanger Pressure Drop Tables
21
Polymer Headers
22
Cast Iron Headers
22
Unitherm Governor Operation
22
Internal Automatic Bypass Valve
23
External Auxiliary Bypass Valve
23
Auxiliary Bypass Valve Adjustment
23
Pressure Relief Valve Installation
23
Plumbing-Water Connections
24
Single Pool Heater Installation
24
Multiple Pool Heater Installation
24
Heat Exchanger Reversal Procedure
25
Electrical Wiring
26
Millivolt Models
26
Transformer Wiring
27
Wiring Diagram - Millivolt (Mechanical Therm.)
28
Wiring Diagram - Digital Models, Atmospheric
29
Servicing Instructions
31
General Location of Controls
31
Control Adjustments - Millivolt Models
32
Control Panel Removal
32
Thermostat Operation - Digital Board
33
Diagnostics
35
Reading a Fault
35
Activating the Remote
36
Remote Control Installation and Operation
36
Remote Operation
36
Status and Diagnostics
39
Activating the Remote
40
Remote Control Installation and Operation
40
Remote Operation
40
Remote Control Wiring
41
Flame Roll-Out Safety Switch
42
High Limits
42
Time Clock/Fireman's Switch
42
Water Pressure Switch
42
Burner Tray Removal (ATM)
43
Gas Valve Removal (ATM)
43
Main Burner and Orifice Removal (ATM)
43
Pilot Removal and Cleaning
43
Pilot Safety
43
Combustion Chamber Removal
44
Heat Exchanger Removal
44
Immersion Well Replacement
44
Tube Cleaning Procedure
44
Desooting Procedure
44
Electrical
45
Flame Roll-Out Safety Switch
45
Lo Nox Pool Heaters
45
Operation
45
Start-Up Procedures
45
Unitherm Governor (U.G.) Replacement
45
Visual Inspection
45
Burner Tray Removal
46
Combustion Blower Removal
46
Troubleshooting
47
Gas Valve Removal
46
Main Burner and Orifice Removal
46
Pilot Removal
46
Electrical - Standing Pilot Millivolt
48
Electrical - Electronic Ignition IID
49
Digital/Aft Control Logic - Flow Chart
50
Replacement Parts
51
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Raypak 407A Specifications
General
Brand
Raypak
Model
407A
Category
Gas Heater
Language
English
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