General Information; Necessary Tools; Important Regulatory And Installation Requirements; Codes - Viessmann Vitocrossal 300 Service Manual

General Information

Necessary Tools

Testing/analysis equipment (Use only calibrated equipment)
H Multimeter to measure 0 - 230V, 0 - 12A AC and
0-100 mA DC
H Flue gas analyzer to measure % CO
Bacharach fluid samplers or suitable electronic analyzer)
H Manometer to measure gas pressure 0 to 11 "w.c.
(accurately) and up to 28 "w.c. gas pressure (or a non-
electric Magnehelic® manometer may also be utilized)
H Stack thermometer 0 to 500°F (0 to 260°C)
H Bacharach calculator or suitable tables to calculate
efficiency
H Carbon monoxide measuring equipment 0 to 400 ppm

Important Regulatory and Installation Requirements

Codes

The installation of this unit shall be in accordance with
local codes or, in the absence of local codes, use CAN/
CSA-B149.1 or .2 Installation Codes for Gas Burning
Appliances for Canada. For U.S. installations use the
National Fuel Gas Code ANSI Z223.1. Always use latest
editions of codes.
In Canada all electrical wiring is to be done in accordance
with the latest edition of CSA C22.1 Part 1 and/or local
codes. In the U.S. use the National Electrical Code ANSI/
NFPA 70. The heating contractor must also comply with
both the Standard for Controls and Safety Devices for
Automatically Fired Boilers, ANSI/ASME CSD-1, and the
Installation Code for Hydronic Heating Systems, CSA
B214, where required by the authority having jurisdiction.

Technical literature

Literature for the Vitocrossal 300 CU3A boiler:
- Technical Data Manual
- Installation Instructions
- Service Instructions
- Operating Instructions and User's Information Manual
- Instructions of other Viessmann products utilized and
installed
- Installation codes mentioned in this manual
Leave all literature at the installation site and advise the
system operator/ultimate owner where the literature can
be found. Contact Viessmann for additional copies.
This product comes with several safety instruction labels
attached. Do not remove! Contact Viessmann immediately
if replacement labels are required.

Initial start-up

Initial start-up must be performed by a qualified heating
contractor. Proper completion of the Maintenance
Record by the heating contractor is also required. The
Maintenance Record is located in the Service Instructions.
6
Cleaning supplies
H Plastic hand brush
H Rags
or O (i.e.
2 2
Special items
H Approved leak detection fluid for natural gas and
H Pipe joint sealant

Working on the equipment

The installation, adjustment, service, and maintenance
of this boiler must be done by a licensed professional
heating contractor who is qualified and experienced in
the installation, service, and maintenance of hot water
boilers. There are no user serviceable parts on the boiler,
burners, or control.
Please carefully read this manual prior to attempting
start-up, maintenance or service. Any warranty is null
and void if these instructions are not followed.
For information regarding other Viessmann System
Technology componentry, please reference
documentation of the respective product.
We offer frequent installation and service seminars to
familiarize our partners with our products. Please inquire.
Ensure main power supply to equipment, the heating
system, and all external controls has been deactivated.
Close main gas supply valve. Take precautions in all
instances to avoid accidental activation of power during
service work.
The completeness and functionality of field supplied
electrical controls and components must be verified by
the heating contractor. These include low water
cut-offs, flow switches (if used), staging controls,
pumps, motorized valves, air vents, thermostats, etc.

Instructing the system user

The installer of the system is responsible to ensure the
system operator/ultimate owner is made familiar with the
system functioning, its activation, and its shut-down.
The following topics must be covered:
- Proper system operation sequence.
- Explain the equipment.
- Demonstrate an emergency shut-down, what to do
- Explain that there is no substitute for proper
Vitocrossal 300 CU3A 26 to 57 Service
liquid propane gas
and what not.
maintenance to help ensure safe operation.