JOHNSON CONTROLS
71
24
FORM 155.17-N1
ISSUE DATE: 4/1/2013
Operation – The “R” indicates a modulating burner.
The burner will “modulate” infinite amounts between
its low-fire position and its high-fire position. YORK
always uses a modulating burner for the ParaFlowTM
chiller/heat ers.
Fuel Types – “G” indicates a gas burner – natural gas,
propane, or manufactured gas. The “L” indicates a #2
fuel oil burner. YORK ParaFlowTM chiller/heaters
that use oil, use only #2 fuel oil.
Burner Size – YORK ParaFlowTM chiller/heaters
use the following sizes:
3 = 300 - 2150 MBH
5 = 600 - 3200 MBH
7 = 1025 - 6000 MBH
8 = 1350 - 7650 MBH
9 = 1700 - 12000 MBH
10 = 3400 - 13500 MBH
11 = 4200 - 17400 MBH
30 = 1000 - 7300 MBH
40 = 1500 - 8700 MBH
50 = 2000 - 12600 MBH
60 = 2700 - 20000 MBH
70 = 2900-29000 MBH
Capacity Range - There are one or more for each
burner size. The number will be 0, 1, or 2 in increas-
ing size. The letter will be A, D, or E and indicates the
mixing case size. This will, of course, affect the firing
range of the burner.
SECTION 24 – BURNER INSTALLATION (WEISHAUPT BURNERS)
For all European direct-fired unit shipments re quir-
ing 50 Hz CE code wiring, Johnson Controls sup plies
a Weishaupt burn er in lieu of a Power Flame burner.
Johnson Controls can also supply a Weishaupt burner
as a special order for any USA unit shipment.
Weishaupt burners are easily distinguished by their
bright red color. Basically, the Weishaupt burners op-
erate in the same manner as the Power Flame burners.
Some of the main differences are:
1. A backdraft damper is not required for operation
and is not part of the absorption unit’s ship loose
parts. Weishaupt burners are able to operate in a
back-pressure be tween -1.0 inch of water column
through 6 inches of wa ter column and even high-
er pressures with some burner mod els.
2. The modulating gas buttery valve (normally
found on the gas train for Power Flame burn-
ers) is an in te gral part of the Weishaupt burn-
er, mounted directly on the burner hous ing. The
buttery valve is spring loaded to fully close the
valve, if the drive linkage is disconnected.
3. Capacity regulation is controlled by a single ser-
vo mo tor, equipped with individual adjustable
micro switch es. This servomotor is integrally
linked to the gas buttery valve and combustion
air control louvers via a single cam arrangement.
Therefore, the Varicam, jackshafts, and linkage
sets normally found on the Pow er Flame burners
are not present on the Weishaupt burners.
4. All Weishaupt burners have a cast aluminum
burner housing that is hinged for ease of service.
Because of this design, no pedestal support is
needed for the Weishaupt burner.
5. Weishaupt includes a burner-mounted oil pump
for burn ers siz es 30, 40, and 50 that use #2 fuel
oil. There fore, there is no oil pump or mo tor in
the unit’s ship loose parts.
As with the Power Flame burners, the Weishaupt burn-
ers are mounted at the Johnson Controls factory and
the burner is pre-wired into a unit mounted burner pan-
el - if the unit is not a knockdown shipment. The gas
train components will be shipped sep a rate ly and will
re quire field mount ing.
MODEL IDENTIFICATION
The following is an example of a Weishaupt burner
designation:
R GL 40 / 1-D ZM D
,
Operation
Fuel Types
Burner Size
Regulation
Type
Electrical
Power
Supply
Capacity
Range
MBH values are
ap prox i mate. If burner
system has Flue Gas
Recirculation (FGR),
reduce MBH by 10%.
If sys tem has Ox y gen
trim, de duct 15%. If
sys tem has FGR and
Ox y gen trim, de duct
25% from the rated
burner capacity.
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