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
