Slant/Fin SENTRY S-120EDP - User Manual

CONTENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,3
Installation Requirements:
Boiler Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Boiler Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chimney Requirements . . . . . . . . . . . . . . . . . . . . . . . . 4
Minimum Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Vent Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Vent Damper Installation . . . . . . . . . . . . . . . . . . . . . . . 5
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Controls and Wiring. . . . . . . . . . . . . . . . . 6-10
Boiler Water Temperature Control. . . . . . . . . . . . . 10-15
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . 16
Boiler Room Air Supply and Ventilation . . . . . . . . . . . 17
Water Piping at Boiler . . . . . . . . . . . . . . . . . . . . . . . . 17
Operating Instructions:
Filling and Venting Water Systems. . . . . . . . . . . . . . . 17
Initial Start:
Safety Information and Lighting Instruction . . . . . . . . 20
Burner Adjustment, Checking Gas Input . . . . . . . 20-21
Care and Maintenance
General Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . 21
Water Level Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Annual Inspection and Cleaning . . . . . . . . . . . . . . . . 22
Safety Check for Control Systems . . . . . . . . . . . . . . . 22
Protection from Freezing/Water Treatment. . . . . . . . . 22
Keeping Area Clear . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Piping a Heating-Cooling System. . . . . . . . . . . . . . . . . . 24
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
HOT WATER MODELS S-34 THROUGH S-150
INSTALLATION AND OPERATING INSTRUCTIONS
GAS-FIRED CAST-IRON BOILERS FOR NATURAL AND L.P. PROPANE GASES
SENTRY
The installation must conform to the requirements of the
authority having jurisdiction or, in the absence of such
requirements, to the National Fuel Gas Code, ANSI Z223.1-
latest edition. The installation must also conform to the
additional requirements in this Slant/Fin Instruction Book
.
In addition, where required by the authority having jurisdic-
tion, the installation must conform to American Society of
Mechanical Engineers Safety Code for Controls and Safety
Devices for Automatically Fired Boilers, No. CSD-1. If there
is any conflict in the above requirements, then the more
stringent requirement will apply.
This manual must be left with owner and should be hung
on or adjacent to the boiler for reference.
WARNING
This boiler, gas piping and accessories must be installed,
connected, serviced and repaired by a trained, experienced
service technician, familiar with all precautions required for
gas-fired equipment and licensed otherwise qualified, in
compliance with the authority having jurisdiction.
®
Printed in U.S.A. 317 PUBLICATION S-42
Part No. 46-0771
Heating Contractor
Address
Phone Number
Boiler Model Number
Boiler Serial Number
Installation Date
This manual must be left with
owner and should be hung on or
adjacent to the boiler for reference.
WARNING
SEE “WARNING” ON PAGE 4 FOR LIQUEFIED
PETROLEUM (L.P.) PROPANE GAS-FIRED BOILERS
IMPORTANT
READ ALL OF THE FOLLOWING WARNINGS
AND STATEMENTS BEFORE READING THE
INSTALLATION INSTRUCTIONS
CANADIAN ENERGY
PERFORMANCE
VERIFIED
RENDEMENT
ENERGETIQUE
VERIFIE

Summary

Installation Requirements

LP Propane Gas Boiler Installation Warnings

Minimum Clearances for Combustible Constructions

Vent Damper Installation

Pre-Installation Instructions

Vent Damper Installation Procedure

Gas Piping Installation and Sizing

Natural Gas Pipe Sizing

Gas Connection Leak Testing

Electrical Wiring Instructions

Power Supply Requirements

Power Connection Procedure

Thermostat Connections and Heat Anticipator

Hydrostat Control Features and Settings

Setting the High Limit

Setting the Low Limit

Setting the Economy Feature

Optional Features

Thermal Pre-Purge Feature

Manual Reset Low Water Cut-Off

Details on activating and testing the manual reset mode for the low water cut-off function, meeting CSD-1 code requirements.

System Start-Up Procedures

Sequence of Operation

Operating Instructions

Filling and Venting Water Systems

Pre-Firing Boiler Checks

Safety Information Before Operating

What to Do If You Smell Gas

Emergency procedures to follow if a gas leak is detected, including avoiding ignition sources and contacting authorities.

Burner Adjustment Procedures

Adjusting Gas Input Rate

Steps to adjust the gas input rate, including consulting gas supplier and measuring manifold pressure.

Main Burner Operation and Adjustment

Main Burner Ignition and Pilot Adjustment

Care and Maintenance

General Maintenance Recommendations

Water System Checks

Annual Inspection and Cleaning

Inspection Checklist Items

Burner and Flue Passage Cleaning

Safety Check for Control System

Procedures for safety checks on boiler control systems.

High Limit Control Test

Procedure to test the high limit control by setting the thermostat high and verifying the gas valve shuts off.

Gas Valve Safety Shutdown Test

Method to test the gas valve safety shutdown by disconnecting the ignition cable and observing burner shutoff.

General Troubleshooting Guide

Troubleshooting: Burners Fail to Operate

Common causes and remedies for burners not operating, including pilot issues, gas supply, and control problems.

Troubleshooting: Burners Will Not Shut Off

Causes and solutions for burners failing to shut off, typically related to defective controls or improper wiring.

Troubleshooting: Flashback at Orifices

Identifying causes of flashback, such as low manifold pressure or improper primary air adjustment, and their remedies.

Troubleshooting: Delayed Ignition

Common reasons for delayed ignition, including pilot flame issues, clogged ports, or burner misalignment, with suggested fixes.

Troubleshooting: Fumes and Gas Odors

Diagnosing and resolving issues related to fumes and gas odors, such as leaks in piping, obstructions, or adverse draft conditions.

Troubleshooting: Condensation Issues

Addressing condensation problems in boiler flues or vent systems, often related to underfiring or improper venting.

Burner Does Not Fire Troubleshooting

Red Indicating Light Status

Interpreting the red indicating light on the control, which signifies an inability to sense water, and troubleshooting steps.

Vent Damper Operation Check

Slant/Fin SENTRY S-120EDP Specifications

General

Type	Hot Water Boiler
Fuel Type	Natural Gas or Propane
Efficiency	85%
AFUE	85%
Weight	180 lbs
Input BTU	120, 000 BTU/h
Water Connection Size	1.25 inches
Gas Connection Size	0.5 inches
Vent Size	4 inches
Output (BTU/h)	96, 000 BTU/h
Output BTU	102, 000 BTU/hr