lp-666 Rev. 003 Rel. 001 Date 2.25.20
5
Part 1 - General Safety Information
This boiler is approved for indoor installations only and is not intended
for use as a pool heater. Clearance to combustible materials: 0” top,
bottom, sides, and back. Boiler must have room for service: 24” front,
24” right side, and 18” left side are minimum recommended service
clearances. (A combustible door or removable panel is acceptable front
clearance.) 400 - 1000 Models have been approved for installation on
combustible flooring. Do not install on carpeting. 1500 - 2000 MODELS
ARE NOT APPROVED FOR INSTALLATION ON COMBUSTIBLE FLOORING.
Install the boiler in a location where temperature and pressure relief
valve discharge or a leak will not result in damage to the surrounding
area. If such a location is not available, install an auxiliary catch pan.
Use only Category IV vent systems.
WARNING
!
Installer -
Read all instructions in this manual before installing.
Perform steps in the given order.
User -
This manual is for use only by a qualified heating installer /
service technician. Have this boiler serviced / inspected annually by
a qualified service technician.
FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE
CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE
PERSONAL INJURY, OR DEATH.
DO NOT USE THIS BOILER IF ANY PART HAS BEEN SUBMERGED
IN WATER.
Immediately call a qualified service technician. The
boiler MUST BE replaced if it has been submerged. Attempting to
operate a boiler that has been submerged could create numerous
harmful conditions, such as a potential gas leakage causing a fire
and/or explosion, or the release of mold, bacteria, or other harmful
particulates into the air. Operating a previously submerged boiler
could result in property damage, severe personal injury, or death.
NOTE:
Boiler damage due to flood or submersion is considered an
Act of God, and IS NOT covered under product warranty.
NOTE:
Obey all local codes. Obtain all applicable permits before
installing the boiler.
NOTE:
Install all system components and piping in such a manner
that does not reduce the performance of any fire rated assembly.
NOTE:
If the boiler is exposed to the following, do not operate.
Immediately call a qualified service technician.
1. Fire
2. Damage
3. Water
Failure to follow this information could result in property damage,
severe personal injury, or death.
Altering any HTP boiler with parts not manufactured by HTP WILL
INSTANTLY VOID the boiler warranty and could result in property
damage, personal injury, or death.
C. Line Voltage Wiring for Standard Boiler
31
D. Alarm Connections
31
E. Low Voltage Connections for Standard Boiler
31
F. Thermostat
31
G. Outdoor Sensor
31
H. Indirect Sensor
31
I. UL 353 Internal Low Water Cut-Off (Factory Installed)
31
J. Wiring of Cascade System Communication Bus
31
K. Cascade Master System Pump and Sensor Wiring
32
L. Cascade Follower Pump and Sensor Wiring
32
M. Variable Speed Pumping
32
N. Optional 0-10 Volt Building Control Signal
33
O. Optional High Gas Pressure Switch
33
P. Optional Low Gas Pressure Switch
33
Q. Optional High Limit Manual Reset
33
Part 8 - Wiring - 2000 Models
37
A. Installation Must Comply With
37
B. Field Wiring
37
C. Line Voltage Wiring for Standard Boiler
37
D. Alarm Connections
37
E. Low Voltage Connections for Standard Boiler
38
F. Thermostat
38
G. Outdoor Sensor
38
H. Indirect Sensor
38
I. UL 353 Internal Low Water Cut-Off (Factory Installed)
38
J. Wiring of Cascade System Communication Bus
38
K. Cascade Master Pump and Sensor Wiring
38
L. Cascade Follower Pump and Sensor Wiring
39
M. Variable Speed Pumping
39
N. Optional 0-10 Volt Building Control Signal
39
O. Optional High Gas Pressure Switch
39
P. Optional Low Gas Pressure Switch
40
Q. Optional High Limit Manual Reset
40
Part 9 - Gas Connections
44
A. Gas Piping
44
B. Gas Table
44
C. Check Inlet Gas Pressure
45
D. Boiler Gas Valve
46
Part 10 - Start-Up Preparation
47
A. Check / Control Water Chemistry
47
B. Check for Gas Leaks
47
C. Freeze Protection (When Used)
47
D. Fill and Test Water System
47
E. Check Thermostat Circuit(s)
48
F. Condensate Removal
48
G. Final Checks Before Starting Boiler
48
Part 11 - Start-Up Procedure
48
A. Control Overview
48
B. Navigation of the Touch Screen Display
49
C. Purge Air from the System
50
D. Single Boiler Initial Start-Up and Operation
50
E. Cascaded System Initial Start-Up and Operation
50
F. Lockout Condition - Cascade System
50
G. Cascade System Programming
51
H. Operating Instructions
51
I. Programming User Settings
52
J. Programming Installer Settings
54
K. Resetting the Maintenance Schedule
58
L. Service Mode - Setting and Verifying the Combustion Setting -
Testing the Internal LWCO
58
Part 12 - Boiler Monitoring
59
A. Status Screens
59
B. History Screens
62
C. Graphics Screen
64
D. Cascade Screen
64
Part 13 - Troubleshooting
66
A. Blocking
66
B. Fault (Lockout)
66
C. User Interface Display
66
Part 14 - Maintenance
72
A. Procedures
72
B. Combustion Chamber Coil Cleaning Instructions
72
Part 15 - Shutdown
74
A. Shutdown Procedure
74
B. Failure to Operate
74
Part 16 - Replacement Parts
75
Part 17 - Installation Checklist
82
Part 18 - Maintenance Report
82
ELX Boiler Limited Warranty
84
Maintenance Notes
86
Customer Installation Record Form
87
