1.0 INTRODUCTION
The Dunham-Bush air-cooled split system air conditioner and heat-pumps
are designed, matched, manufactured tested and ready for installation when
it reached the site. The evaporator unit consists mainly of a direct expansion
evaporator coil(s) with factory package thermal expansion valve, to be
coupled with air cooled condenser unit consisting of scroll compressor(s)
and large heat rejection condenser coil with integral subcooling circuit(s).
Factory standard units also incorporate important safety and operating
controls which includes manual reset high and low pressure cutout and
compressor motor protectors for each compressor(s).
Every Dunham-Bush air-cooled split air-conditioner and heat pumps have
been subject to stringent quality control and accurately testing as a final
verification of reliability. If it is correctly installed, operated and
maintained, it will provide many years of satisfactory and efficient
performance.
Note: These instructions are general in nature and are for standard
units only. Non-standard units may vary in some respects from
these instructions to suit particular applications.
1.1 NOMENCLATURE
ACC
S
445
Q
P
EB
445
D
Q
P
Air Cooled Condensing
S - Scroll Compressor
Model Code
VEB/ EB - Vertical
Evaporator Blower
HEB - Horizontal Evaporator
Blower
Model Code
Blank -
R22
P -
R407c
Blank -
Standard
FB
- Free Blow
Q -
Special
Blank -
R22
P -
R407c
Blank - Standard
Q -
Special
Generation
3
