NTI FTVN - Table of Contents

5
Table of Contents
Part 1 - General Safety Information 6
A. Operation and Installation Warnings 6
B. Improper Combustion 7
C. Gas 7
D. When Servicing the Boiler 7
E. Boiler System 7
F. CH and DHW Loop Water Chemistry Requirements 8
G. Freeze Protection 8
H. Water Temperature Adjustment and Scalding 9
I. High Elevation Installations 9
Part 2 - Before You Start 10
A. What’s in the Box 10
B. Optional Equipment 11
Part 3 - Prepare the Boiler for Installation 12
A. Locating the Boiler 12
B. Leveling 13
C. Clearances for Service Access 13
D. Wall Mounting Considerations 14
E. Wall Mounting Instructions 14
1. Mounting to a Concrete Wall 14
2. Mounting to a Wood Studded Wall 14
F. Residential Garage and Closet Installations 14
G. Exhaust Vent and Intake Pipe 15
1. Direct Vent of Exhaust and Intake 15
2. Power Venting, Indoor Combustion Air in Conned or Unconned Space
15
H. Carbon Monoxide Detectors 15
I. Prevent Combustion Air Contamination 16
J. Removing a Boiler from a Common Vent System 16
K. Technical Specications 17
Part 4 - Water Piping 21
A. General Plumbing Information 21
B. Backow Preventer 21
C. Expansion Tank 21
D. Piping the Boiler 21
E. Internal Circulation Pump 23
F. CH and DHW Pressure Relief Valves 24
G. Air Elimination Device 25
H. Low Water Cut-O (Field Supplied) 25
I. Applications* 25
J. Floor Drying Function 32
Part 5 - Venting 33
A. General 33
B. Approved Materials for Exhaust Vent and Intake Pipe 34
C. Additional Requirements for Installation in Canada 34
D. Exhaust Vent and Intake Pipe Location 35
E. Exhaust Vent and Intake Pipe Sizing 36
F. Tightening Boiler Collar to Exhaust Vent and Intake Pipe 36
G. Exhaust Vent and Intake Pipe Installation 36
H. Applications 39
1. Direct Vent Installation of Exhaust and Intake 39
2. Venting Through an Existing System 45
3. Power Venting, Indoor Combustion Air in Conned or Unconned Space
46
Part 6 - Installing the Condensate Drain 47
Part 7 - Connecting Electrical Service 48
A. Wiring 48
1. Connecting Power (120V) for DHW and CH Circulators 48
2. Low Voltage Wiring Connections 48
3. Room Thermostat Wiring Connections 49
4. Outdoor Sensor Connections 49
5. Aquastat (Default) and Tank Sensor (Optional) Connections (non-Combi
Models) 49
B. Internal Wiring Details 50
Part 8 - Gas Connections 54
A. Gas Pipe Sizing Tables 54
1. Gas Pipe Sizing 54
2. Natural Gas Pipe Sizing 54
3. LP (Liquid Propane) Gas Pipe Sizing 54
B. Gas Connection Requirements 54
C. Additional Precaution for Excess Flow Valve (EFV) 55
D. Checking Gas Pressure at the Boiler for Proper 55
Operation 55
Part 9 - Controls 56
A. Control and Display Overview 56
B. Ignition Procedure 57
C. Central Heating (CH) Temperature Adjustment 57
D. Domestic Hot Water (DHW) Temperature Adjustment 57
E. User Menu 58
F. INFO Menu 59
G . Date and Time (If ITIME is set to OFF) 59
H. Automatic CH Temperature Control (AUTO) 60
I. Type of Temperature Control 61
J. Slope of Outdoor Reset Curve 61
L. Auto Boost 62
K. Parallel Shift of Reset Curve 62
M. Room Temperature Day /Night 63
N. Time Programs – Heating Schedule 63
O. Automatic Summer / Winter Changeover 63
P. Technical Menu - Access and Navigation 64
Q. Technical Menu - Menu Structure 65
R. Complete Menu Parameters 66
Part 10 - Start-Up Preparation 74
A. Check / Control Water Chemistry 74
B. Check for Gas Leaks 74
C. Freeze Protection (When Used) 74
D. System Water Fill, Purge, and Test 75
E. Purge Air from DHW System 75
F. Check Thermostat Circuit(s) 75
G. Condensate Removal 75
Part 11 - Start-Up 77
A. First Ignition 77
B. Combustion Checking Procedure 77
C. Checking Combustion Parameters 79
D. Converting the Appliance from Natural Gas to 79
Propane Operation 79
Part 12 - Installation Checklist 80
Part 13 - Troubleshooting 82
A. Boiler Protection Devices 82
1. Blocking Error 82
2. Lockout Error 82
3. Malfunction Warning 82
B. Boiler Error Codes 83
Part 14 - Maintenance 87
A. Procedures 87
B. Maintenance That May be Performed by the User 87
C. Maintenance Only to be Performed by a Qualied Service Techni-
cian 88
D. Replacing Components 91
E. After Maintenance is Complete 94
Part 15 - Maintenance Report 94
Part 16 - Shutdown 96
A. Shutdown Procedure 96
B. Failure to Operate 96
C. Important 96
Maintenance Notes 97
Customer Installation Record Form 98