HTP UFT-80W - Page 42

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LP-542 REV. 6.2.16

Figure 28 – Wiring – Zoning with Zone Valves and Indirect Water Heating

Figure 29 – Wiring – Zoning with Pumps and Indirect Water Heating

Main Page

Table of Contents4
Part 1 - Items Shipped with the Boiler7
Part 2 - Safety Regulations8
Operation and Installation Warnings8
Improper Combustion10
Gas10
When Servicing the Boiler10
Boiler System10
Boiler Water Chemistry10
Freeze Protection Fluids11
High Elevation Installations11
Part 3 - Technical Specifications11
Part 4 - Prepare Boiler Location15
Uncrating the Boiler15
Before Locating the Boiler15
Leveling16
Clearances for Service Access17
Residential Garage and Closet Installations17
Exhaust Vent and Intake Pipe18
Prevent Combustion Air Contamination18
Removing a Boiler from a Common Vent System18
Wall-Mounting the Boiler19
Part 5 - Venting20
Intake Pipe and Exhaust Vent Guidelines20
Approved Vent Materials22
Allowed Combined Vent Lengths22
Tightening Boiler Collar to Exhaust Vent and Intake Pipe23
Vent Termination24
Direct Vent, Two Pipe Roof and Sidewall Vent Terminations24
Direct Vent, Optional Horizontal and Vertical Vent Kits25
Snorkel Venting26
Power Vent, Indoor Combustion Air Installation in Confined or Unconfined Space27
Screen Installation29
Part 6 - Install the Condensate Drain29
Part 7 - Gas Piping30
Additional Precaution for Excess Flow Valve (Efv)31
Gas Pipe Sizing Tables31
Gas Pipe Sizing31
Natural Gas Pipe Sizing31
LP (Liquid Propane) Gas Pipe Sizing31
Gas Connection Requirements32
Part 8 - Water Piping33
General Plumbing Connection Guidelines33
Backflow Preventer34
Central Heating Piping System Water Piping Methods34
Circulator Sizing34
Pressure Relief Valve43
Built-In Low Water Cut-Off (Lwco)43
Optional External Ul353 Manual Reset Low Water Cut-Off (Lwco) Interface Kit43
Part 9 - Connect Electrical Power / Initial Startup44
General Operating Conditions44
Wiring Information44
Dip Switches45
Wiring a Cascade System46
Part 10 - Operating System Instructions51
Control Panel51
Lcd Display Descriptions51
Start-Up Sequence51
Changing the Ch Set-Point52
Changing the Time53
Status Display Mode53
Installer Mode54
Error Mode57
Setting up a Cascade System60
Outdoor Temperature Mode (Optional)61
0-10 Volt Input62
Step Modulation62
Error Tree Analysis63
Flame Detection63
Gas Detection63
Aps / Burner Overheat Limit / Condensate Block Switch64
Storage / Op / Ch Overheat / Exhaust Overheat Sensors64
Part 11 - Start-Up Preparation64
Boiler Water Chemistry65
Glycol Antifreeze Solutions65
Check for Gas Leaks65
Fill and Test Water System66
Purge Air from System67
Check Thermostat Circuit(S)67
Condensate Removal67
Final Checks before Starting Boiler68
Adjusting Gas Pressure at the Boiler68
Setting and Verifying the Combustion Setting69
Part 12 -Installation and Start-Up Checklist70
Part 13 - Troubleshooting72
Part 14 - Annual Maintenance Procedures72
Replacement Parts76
Limited Warranty for UFT Boilers83
Start-Up Report85

HTP UFT-80W - Page 42

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