LP-387 Rev. 7.3.15
5
J. Fill and Purge Heating System 19
K. Glycol Antifreeze Solutions 19
L. Zoning with Zone Valves 19
M. Zoning with Circulators 19
N. Multiple Boilers 19
O. Applications* 20
Part 5 - Venting and Condensate Removal 27
A. General 27
B. Approved Materials for Exhaust Vent and Intake Pipe 28
C. Additional Requirements for Installation in Canada 28
D. Exhaust Vent and Intake Pipe Location 29
E. Exhaust Vent and Intake Pipe Sizing 30
F. Longer Vent Runs 30
G. Exhaust Vent and Intake Pipe Installation 30
H. Applications 31
1. Direct Vent Installation of Exhaust and Intake 31
2. Venting Through an Existing System 33
3. Indoor Combustion Air in Conned or Unconned Space
34
I. Condensate Removal System 35
Part 6 - Wiring 38
A. Installation Must Comply With 38
B. Field Wiring Terminations 38
C. Field Wiring 38
D. Line Voltage Wiring for Standard Boiler 38
E. Alarm Connections 39
F. Low Voltage Connections for Standard Boiler 39
G. Thermostat 39
H. Outdoor Sensor 39
I. Indirect Sensor 39
J. Optional 0-10 Volt Building Control Signal 40
K. Optional UL353 Low Water Cut-O Interface Kit 40
L. Wiring of Cascade System Communication Bus 40
M. Cascade Master Pump and Sensor Wiring 41
N. Cascade Follower Pump and Sensor Wiring 41
Part 7 - Gas Connections 43
A. Gas Piping 43
B. Check Inlet Gas Pressure 44
C. Boiler Gas Valve 45
Part 8 - Start-Up Preparation 45
A. Check / Control Water Chemistry 45
B. Check for Gas Leaks 45
C. Freeze Protection (When Used) 46
D. Fill and Test Water System 46
E. Purge Air from Water System 46
F. Check Thermostat Circuit(s) 47
G. Condensate Removal 47
H. Final Checks Before Starting Boiler 47
I. Setting Up a Single Boiler 47
J. Setting Up a Cascaded System 47
K. Lockout Condition 48
L. Cascade System Programming 48
Part 9 - Start-Up Procedure 49
A. Control Overview 49
B. Navigation of the Display 49
C. Operating Instructions 49
D. Programming Boiler Settings 50
E. Programming the System Setting 50
F. System Setting Program Navigation 50
G. Resetting the Maintenance Schedule 52
Part 10 - Start-Up Procedures for the Installer 53
A. Boiler Control Status Menu 53
B. Cascade Menu 55
C. Boiler Test Mode 55
Part 11 - Troubleshooting 56
A. Boiler Error and Fault Codes 56
B. Boiler Error 56
C. Boiler Fault 56
D. User Interface Display 57
Part 12 - Maintenance 62
A. Procedures 62
B. Combustion Chamber Coil Cleaning Instructions 62
C. Cleaning Water Side of Heat Exchanger 63
D. Maintaining the Condensate System 63
Part 13 - Shutdown 64
A. Shutdown Procedure 64
B. Vacation Procedure 64
C. Failure to Operate 64
Part 14 - Installation Checklist 69
Part 15 - Maintenance Report 69
Limited Warranty 73
Maintenance Notes 75
Customer Installation Record Form 76
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: 6” top, bottom, sides, and 0” back. Left side has
all boiler mechanical connections. Boiler must have room for
service: 24” front is minimum recommended service clearance.
(A combustible door or removable panel is acceptable front
clearance.) This boiler has been approved for closet installation
and installation on combustible ooring. Do not install directly on
carpeting. 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.
Installer - Read all instructions in this manual before installing.
Perform steps in the given order.
User - This manual is for use only by a qualied heating installer /
service technician. Have this boiler serviced / inspected annually
by a qualied service technician.
FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE
CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE,
SEVERE PERSONAL INJURY, OR DEATH.
NOTE: If the boiler is exposed to the following, do not operate.
Immediately call a qualied service technician.
1. Fire
2. Damage
3. Water
Failure to follow this information could result in property
damage, severe personal injury, or death.
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 re rated
assembly.
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