Viessmann KOB PYROT KRT SERIES, Technical Data Manual, Page: 6 / 40

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5443 109 v1.9
Pyrot Technical Data
Boiler model KRT150 KRT220 KRT300 KRT400 KRT540
Minimum size
door 35
b
in. x 49
a
in.
(900 mm x
1250 mm)
46 in. x 61 in.
(1170 mm x
1550 mm) 46 in. x 61 in.
(1170 mm x
1550 mm) 55 in. x 67 in.
(1400 mm x
1700 mm) 55 in. x 67 in.
(1400 mm x
1700 mm)
Minimum
ceiling opening
(W x H)
39
a
in. x 102
a
in.
(1000 mm x
2600 mm)
49
a
in. x 103
a
in.
(1250 mm x
2620 mm)
49
a
in. x 118 in.
(1250 mm x
3000 mm)
59 in. x 122 in.
(1500 mm x
3100 mm) 59 in. x 130 in.
(1500 mm x
3300 mm)
Special delivery condition (partially disbanded)
For special circumstances like restricted space to bring
the boiler into the heating room, the size of the boiler
can be reduced by detaching additional components
to the ones as described in section “Standard delivery
condition”. The assembly of these components require
additional assembly time of approximately 6 hours.
Measurements of the largest part for reduced boiler size
Special delivery condition (fully disbanded)
For special circumstances like heavily restricted space
to bring the boiler into the heating room, the size of the
boiler can be reduced by detaching additional components
to the ones as described in section “Standard delivery
condition” and “Special delivery condition partially
disbanded”. The assembly of these components require
welding and additional assembly time of approximately
20 hours.
Measurements of the largest part for reduced boiler size
Boiler model KRT150 KRT220 KRT300 KRT400 KRT540
Minimum size
door 35
b
in. x 49
a
in.
(900 mm x
1250 mm)
46 in. x 59 in.
(1170 mm x
1500 mm) 46 in. x 59 in.
(1170 mm x
1500 mm) 55 in. x 67 in.
(1400 mm x
1700 mm) 55 in. x 67 in.
(1400 mm x
1700 mm)
Minimum
ceiling opening
(W x H)
39
a
in. x 85 in.
(1000 mm x
2160 mm)
49
a
in. x 85
c
in.
(1250 mm x
2180 mm)
49
a
in. x 98
c
in.
(1250 mm x
2510 mm)
59 in. x 96
b
in.
(1500 mm x
2450 mm)
59 in. x 110 in.
(1500 mm x
2800 mm)
Delivery Condition
(continued)
General Information
The following additional objects will be delivered
disbanded:
- The combustion chamber and the fire box are separate
- No brickwork inside the combustion chamber and fire
box
- No insulation and panels are attached to the
combustion chamber
The following additional objects will be delivered
disbanded:
- The tube heat exchanger is a separate piece
- The flue gas collector is detached from the tube heat
exchanger
- The boiler door is detached from the tube heat
exchanger (welding required)