Maintenance

Modine Manufacturing Company
1500 DeKoven Avenue
Racine, Wisconsin 53403-2552
©2017 Modine Manufacturing Co. 76-500P
Commercial Products Group
www.modinehvac.com
or call 1.800.828.HEAT (4328)
Job Name:
Address:
City & State:
Service Company:
Date:
Model No.:
Serial No.:
INSPECT UNIT FOR DAMAGE
Sheet Metal
Fan
Air Mover
Gas Pipes
Vent Systems
Equipment Supports
GAS SUPPLY
Gas mains are on
Gas inlet pressure correct
Gas manifold pressure correct
Regulators are not damaged
Gas regulator vents are not plugged
INSPECT GAS BURNERS (GAS OFF)
Burner clean. Clean if required
Inside burner tubes free of insects and debris
Burner in proper location and correctly aligned
Burner fastened securely
THERMOSTATS
Check for general cleanliness
Check wiring to and from thermostat
Check for proper temperature setting
CHECK THE EXTERIOR COMPONENTS OF THE VENT SYSTEM
Burner clean. Clean if required
Vent caps:
Combustion air intake caps:
Vent extensions:
POWER VENTED (POWER EXHAUST) UNITS
Power venter motor wiring connections tight
Pressure switch sensing tube not blocked or damaged
With the main gas turned off, cycle the thermostat to check
the operation of the power venter, and verify the safety
pressure switch is functioning correctly
Vent system safety pressure switch working
INSPECT AIR MOVER (POWER OFF)
Lubricate motor bearings (if required)
Motor shaft turns freely
Fan or blower wheel not damaged or binding
Fan is not loose on motor shaft
Blower and motor pulleys are secure
Proper belt tension. Replace worn belts
Power connections to motor secure
INSPECT GAS CONTROLS (GAS OFF)
Gas supply pipes to equipment damage-free
Gas connections tight
Pilot tubing connections tight at the gas valve
Pilot tubing connections tight pilot burner
Main burner gas orifices not blocked
Pilot orifice not blocked
Electrical connections to gas valve tight
Thermocouple damage free, clean and tight
Pilots damage free, clean and tight
Flame sensors damage free, clean and tight
Ignition cables damage free, clean and tight
VENT SYSTEM
Inspect the entire vent system
Vent system is clear and free of obstructions
All connections are secure and tight
Vent system free from corrosion and damage
No leakage of vent products into space
No recirculation of vent products into combusion air
Vent support system is secure and free of damage
No condensate leakage at vent joints. Water marks down
the outside of the vent pipe may mean improper
venting/insulation. If water marks are observed, check that
proper vent system has been installed
Vent pipe, vent cap, and cleanout cap clean
INSPECT UNIT FOR DIRT AND DEBRIS
Heat Exchanger
Burner
If propane is used
Proper leve in propane tanks
Main regulator proper pressure settings
If condensate removal pump is used
Condensate pump is working properly
INSPECT VENT/INLET AIR SYSTEM
Combustion air system clear
Heat exchanger clear
All gas lines and connections are leak free
Supply Voltage:
Fan or Blower RPM:
Supply Gas Pressure:
Manifold Gas Pressure:
After inspection of gas controls turn on the gas and check for gas leaks
using a water/soap solution. Do not check for leaks with an open flame.