Technical data

6
1 General Information
Viessmann solid-fuel boiler may only be set up and com-
missioned by specialists. This will rule out any incorrect
assembly or commissioning. These instructions have thus
been reduced to important technical data, references to
regulations, technical rules and other regulations.
Steel wood fired hot water heating boiler.
For operation with modulating boiler water temperatures in
closed and open loop forced circulation hot water heating
systems.
The Pyrot KRT boilers are certified the CAN/CSA B366.1-
M91 and UL 391.
The boiler model selected should be based on an accurate
heat loss calculation of the building. The boiler selected
must be complete with the connected radiation.
Maximum working pressure 30 or 60 psig
Maximum boiler temperature 250 °F / 121°C
(closed loop)
This boiler does not require a flow switch.
1.1 State of the art
The operating instructions are in keeping with the PYRTEC
at the time of its delivery. In the interest of our customers,
we reserve the right to make subsequent alterations result-
ing from further technical development without being re-
quired to give notification of such.
1.2 Documented information
The installation instructions contain the information re-
quired according to the subject boilers have been tested
and examined in accordance with:
CSA B366.1-M91
Solid Fuel Fired Central Heating Appliances
CSA C.22.2#3-M88(R2004)
Electrical Features of Fuel Burning Equipment
UL391 (4thEd)
Solid Fuel and Combination-Fuel Central and Supplemen-
tary Furnaces
CSA B365-01
Installation Code for Solid Fuel Burning Appliances and
Equipment
2 Codes
Please carefully read this manual prior to attempting
installation. 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.
The installation of this unit shall be in accordance with
local codes. In the absence of local codes, use:
CSA B365-0
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.
2.1 Mechanical room
Ensure the mechanical room complies with the
requirements in this Viessmann recommends installation of
an additional electrical disconnect switch and a fuel shut-
off valve (if possible) outside the mechanical room or
enclosed area of installation
2.2 Working on the equipment
A licensed professional heating contractor who is qualified
and experienced in the installation, service, and mainte-
nance of hot water boilers must do the installation, adjust-
ment, service, and maintenance of this boiler.
There are no user serviceable parts on the boiler, burners,
or control.
Ensure main power supply to equipment, the heating sys-
tem, and all external controls have been deactivated. Take
precautions in all instances to avoid accidental activation of
power during service work.
The completeness and functionality of field supplied elec-
trical 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, ther-
mostats, etc.
2.3 Technical literature
Literature for PYROT KRT boiler:
- Assembly Installation Instruction
- Operating and maintenance instructions
- Field wiring diagram.
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.