Johnson Controls Series 20 J 15 DJ Technical Manual

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349687-JTG-A-1007
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
TECHNICAL GUIDE
SERIES 20
SINGLE PACKAGE GAS/ELECTRIC UNITS
AND SINGLE PACKAGE AIR
CONDITIONERS
J15, 18, 20 & 25 DJ
15 & 25 NOMINAL TONS
12.00 EER (15 TONS), 11.70 EER (17.5 TONS),
11.3 EER (20 TONS), 10.5 EER (25 TONS)
DESCRIPTION
Johnson Controls Series 20 J**DJ units are convertible single
package high efficiency rooftops. All models have indepen-
dent dual refrigerant circuits for efficient part load operation.
Although the units are primarily designed for curb mounting
on a roof, they can also be slab-mounted at ground level or
set on steel beams above a finished roof.
All units include:
Powder Paint finish that meets ASTM-B-117 750 hour
salt spray standards
Two-stage cooling provided by dual independent
refrigeration circuits with expansion valves, filter-driers, high
and low pressure/loss of charge switches and freezestats
Scroll compressors
Two-stage heating provided by dual independent heat
exchangers with aluminized steel tubes, redundant gas
valves, spark ignition with induced draft logic
Permanently lubricated motors
Bottom or side air discharge configuration capability
(field convertible)
Belt Drive Blower Motor with high static drive option
Constant supply air volume (CV) with optional variable
air volume (VAV)
Manufactured under the quality standards of ISO9001
Zero-25% fixed air damper with hood
Copper tube/aluminum fin coils
Hinged filter access and tool free latched doors
Hinged tool free blower, blower motor, filters and electri-
cal panel access
Rigging holes in base rails for lifting
Single point power connection
Complete factory package - tested, charged and wired
CSA agency approvals on all units
WARRANTY
One-year parts warranty
A Five-year parts warranty on the compressors and
electric heat elements
Ten-year parts warranty on the gas-fired heat
exchangers