Greenheck VSU - Manual
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Table of Contents:
- Page 2 – Inspection and Maintenance during Storage; As units are removed; Receiving; Units designed for outdoor applications
- Page 3 – Table of Contents; Installation; When ordered with insulation, this unit has a; Concrete Slab Dimensions; Housing Size; Concrete Slab and Unit Footprint
- Page 4 – to lift and center the unit; continued; Complete Installation
- Page 5 – Dimensional Data; Upblast Discharge
- Page 6 – Installation of Direct Gas Piping; Install Additional Regulator if Required; Supply Gas Line
- Page 7 – Optional Vent Line; Pipe the Optional Vent Line; WARNING; Test the System for Leaks
- Page 8 – Check the Voltage; SPECIAL EQUIPMENT REQUIRED; Check for Vibration; Electrical Nameplate; Blower Rotation
- Page 9 – • Heating Inlet Air Sensor
- Page 10 – Check the Supply Gas Pressure; Burner and Baffles; Measuring the Pressure Drop; Direct Gas Nameplate
- Page 11 – Set the Maximum Firing Rate; Separate Regulator and Modulating Valves; Regulators and Modulating Valves
- Page 12 – Set the Unit’s Operating Temperature; IMPORTANT; Flame Signal Check; DC Voltmeter and; Maxitrol Series 14; Series 14 Discharge Temperature Setting
- Page 13 – Direct Gas Burner Sequence; Supply Fan Contact Closed; Flame Safeguard; Operation - Electrical; Electrical Sequence; energized and closed
- Page 14 – Blower Does Not Operate; 4 VAC between; Troubleshooting
- Page 15 – Heater Does Not Operate; Does not attempt to light (No visible spark)
- Page 16 – If problems remain, consult the factory
- Page 17 – Visible pilot; (Adjust the flame rod to avoid contact with the burner or the unit)
- Page 18 – Maintenance - Routine; Motors; Belt Tension; Drive Alignment; Filters
- Page 19 – Bearings; Fan; High Limit
- Page 20 – Typical Control Center Layout; Reference; Heating; Typical Gas Train Layout
- Page 21 – Pre Start-Up Checklist
- Page 22 – Maintenance Log
- Page 24 – Warranty
1
Model VSU Make-Up Air Unit
Installation, Operation and Maintenance Manual
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the
product described. Protect yourself and others by observing all safety information. Failure to comply with instructions
could result in personal injury and/or property damage! Retain instructions for future reference.
®
Part #457831
VSU Make-Up Air Unit
Model VSU
Installation, Operation and Maintenance Manual
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the
product described. Protect yourself and others by observing all safety information. Failure to comply with instructions
could result in personal injury and/or property damage! Retain instructions for future reference.
®
Only qualified personnel should install this unit.
Personnel should have a clear understanding of these
instructions and should be aware of general safety
precautions. Improper installation can result in electric
shock, possible injury due to coming in contact with
moving parts, as well as other potential hazards.
Other considerations may be required if high winds
or seismic activity are present. If more information
is needed, contact a licensed professional engineer
before moving forward.
1. Follow all local electrical and safety codes, as
well as the National Electrical Code (NEC), the
National Fire Protection Agency (NFPA), where
applicable. Follow the Canadian Electric Code
(CEC) in Canada.
DANGER
Always disconnect power before working on or
near a unit. Lock and tag the disconnect switch or
breaker to prevent accidental power up.
CAUTION
When servicing the unit, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.
General Safety Information
2. The rotation of the wheel is critical. It must be
free to rotate without striking or rubbing any
stationary objects.
3. Motor must be securely and adequately
grounded.
4. Do not spin fan wheel faster than the maximum
cataloged fan rpm. Adjustments to fan speed
significantly affects motor load. If the fan RPM is
changed, the motor current should be checked
to make sure it is not exceeding the motor
nameplate amps.
5. Do not allow the power cable to kink or come
in contact with oil, grease, hot surfaces,
or chemicals. Replace cord immediately if
damaged.
6. Verify that the power source is compatible with
the equipment.
7. Never open blower access doors while the fan is
running.
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Do not touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
FOR YOUR SAFETY
The use and storage of gasoline or
other flammable vapors and liquids in
open containers in the vicinity of this
appliance is hazardous.
WARNING
Improper installation, adjustment,
alteration, service or maintenance can
cause property damage, injury or death.
Read the installation, operating and
maintenance instructions thoroughly
before installing or servicing this
equipment.
Optional Service
Platform Shown
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Summary
2 Model VSU Make-Up Air ® ® ® ® ® Inspection and Maintenance during Storage While in storage, inspect fans once per month. Keep a record of inspection and maintenance performed.If moisture or dirt accumulations are found on parts, the source should be located and eliminated. At each inspection, rota...
3 Model VSU Make-Up Air ® ® ® ® ® Table of Contents Installation Filter/Stand Section . . . . . . . . . . . . . . . . . . . . . . 3-4Burner/Blower Section . . . . . . . . . . . . . . . . . . . . . 4Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Dimensional Data . . . . . ....
4 Model VSU Make-Up Air ® ® ® ® ® 2. Burner/Blower Section Use a crane and a spreader bar hooked to the factory lifting lugs (shown below) to lift and center the unit onto the filter stand section. The sections can be caulked together, but it is not needed with the water kickouts provided with this ...
