34000 Autry Street, Livonia, MI 48150 • 800.968.5530 • Fax 734.419.0209 • www.hamiltonengineering.com • LIT91178 REV 5/2017
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INTRODUCTION
All high efficiency condensing appliances will require more regular maintenance (cleaning) than their non-condensing
counterparts. Failure to do so may result in damage to the appliance that is not covered under warranty.
Failure to follow all of
the instructions contained in this manual may also cause premature product failure that may not be covered under warranty.
Periodic maintenance should be performed at least once a year by a qualified service technician to ensure that all the equipment
is in safe, efficient operation.
Failure to do so may eliminate warranty coverage.
In the first year of operation, it is highly
recommended that inspections of all connection points and the combustion chamber be done at three month intervals,
any signs of fouling or leaks must be thoroughly investigated immediately as failure to do so may void warranty. Assuming
no cause for excessive fouling is found, then the period of months from initial start up that it was found that cleaning was
required, shall become the required future minimum cleaning interval, but at no time should it exceed 12 months. The owner
MUST make necessary arrangements with a qualified heating contractor for proper maintenance of the heater. Installer must
also inform the owner that the lack of proper care and maintenance of the heater may result in a hazardous condition and
lack of warranty coverage. The installer should discuss the contents of the User’s Information Manual with the owner.
An inspection should cover, at a minimum, the following areas:
• Download and review operating hour data and fault history
• Inspect all fittings, controls and connections for leaks, damage, or fouling
• Fire side:
Heat
exchanger
Burner and ignitor
Burner door and rear wall insulation
• Drain system components:
Hoses & clamps
Trap
assembly
Condensate
neutralizer
• Test all safeties and operating controls
• Water side temperature rise (∆T) test
DATA DOWNLOAD
Always retrieve fault history and power on hours from the control board first, using your laptop or PDA and the SIT cable and
software. Be sure to use the proper version software and communication cable, then save the file and name appropriately
for future reference. Should the servicing contractor not have the proper software, cables, and training to do this, have them
contact the factory or their local distributor.
INSPECTION AND CLEANING
(photos illustrating each step follow sets of instructions)
Caution: Before removing the door of the appliance, switch off the electrical power supply to it.
• Remove the front cover and check the sensors, flow switch, all pipes, lines and connections,
and the heat exchanger (top, bottom) for traces of water and water leakage.
•
Inspect the top of the casing and/or the top of the appliance for water leakage or traces of
water from the air supply pipe or the air vent (if applicable).
•
Inspect the flow switch; the appliance must first
be drained by closing the inlet and outlet valves on
each appliance. Then, by opening the drain on the ball valve and the relief valve, the appliance will drain.
Isolation and drain
valve appliance outlet
Isolation valve for pump
& appliance outlet
Relief valve - check operation
and open to drain unit
ANNUAL INSPECTION
(See LIT91179 Maintenance Checklist for required tools and materials)
