26
Replacement parts
Factory replacement parts should be
used wherever possible to maintain
unit performance, it’s normal
operating characteristics and its
safety testing agency listings.
Replacement parts may be
purchased through the local Zehnder
Rittling Sales Representative.
Contact the local Sales
representative or factory before
attempting any unit modifications.
Any modifications not authorized by
the factory could result in personnel
injury, damage to the unit, and will
void the manufacturer’s warranty.
When ordering parts, the following
information should be supplied to
ensure proper part identification:
■
Complete unit model number
■
Unit serial number
■
Complete part description
including any identifying numbers
on the part
On warranty replacements, it is
often necessary to return the faulty
component to receive credit. Contact
the local Sales Representative
who will get authorization from the
factory including an RGA (Returned
Goods Authorization) to be used
when sending components back for
inspection. Any returned components
sent back to the factory without the
proper RGA attached will cancel any
outstanding credit.
Equipment start-up
checklist
Receiving and inspection
■
Unit received undamaged
■
Unit received complete as
ordered
■
Unit arrangement and handing
is correct
■
Unit structural support is
complete and correct
Handling and installation
■
Mounting grommets/isolators
are used
■
Unit mounted level and square
■
Proper access is provided for
unit and accessories
■
Proper overcurrent protection
is provided
■
Proper service switch/
disconnect is provided
■
Proper hot water line sizes to
unit
■
All services to unit in code
compliance
■
All shipping screws and braces
are removed
■
Unit protected from dirt and
foreign matter
Heating connections
■
Protect valve package
components from excessive
heat
■
Mount valve packages
■
Connect field piping to unit
■
Pressure test all piping for
leaks
■
Insulate all piping, as required
Ductwork connections
■
Install ductwork, fittings and
grilles, as required
■
Flexible duct connections at
unit
■
Proper supply and return grille
type and size
■
Control outside air for freeze
protection
■
Insulate all ductwork, as
required
Electrical connections
■
Refer to unit wiring diagram
■
Connect incoming power
service or services
■
Install and connect “shipped
loose” components
Unit start-up
■
General visual inspection and
system inspection
■
Check for free and proper fan
rotation
■
Record electrical supply
voltage and amperage draw
■
Check all wiring for secure
connections
■
Close all unit isolation valves
■
Flush water systems
■
After system has been flushed,
ensure all isolation valves are
open