Bryant 479 D - Manual (Page 13)

Installation Instructions
479
Sizes 180 & 240
Series E
ATTACH TO INSTALLATION INSTRUCTIONS 39479D8
I
39479D12
4/1/72
Use attached 39479D8 Installation Instructions (with changes indicated below) to in­
stall sizes 180 and 240 of Model 479, Series E, units.
Models 180- and 240-479 Series E units differ from Series D units as described below.
1. GAS INPUT to the cooling section of Model 180-479 was Increased from 450,000 Btuh
to 492,000 Etuh C.246,000 Btuh input each chiller). The generator burner orifices
were changed from #39 drill size to #36 drill size on the natural gas unit. The
burner orifices on the propane unit were changed from #53 drill size to #52 drill
size.
2. GAS INPUT to the cooling section of Model 240-479 was increased from 600,000 Btuh
to 640,000 Btuh C320,000 Btuh input each chiller). The generator burner orifices
were changed from #41 drill size to #39 drill size'on the natural gas unit. The
burner orifices on the propane unit were changed from #54 drill size to #53 drill
size.
3.
4.
AUTOMATIC PILOT REIGNITION is used on both natural and propane units in both the
heating and cooling sections on both Models 180- and 240-479. The wiring diagrams
on pages 11 and 12 apply to both natural and propane gas units.
FUSE SIZE was changed on Model 180-479.
30 amp fuses.
The 180-479 now uses one 60 amp and two
NOTE: Hydraulic Pump Heater Kit P/N 65134D01 (2 required) must be field installed on
each chiller if the cooling section is to be operated at outdoor temperatures below
40°F. Adding the heater kits permits operation of the cooling section at outdoor temp­
eratures down to -30°F. Antifreeze must also be added for protection at the lowest
outdoor temperature.
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D O N
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