Bryant Preferred 549K 04-06, Service And Maintenance Instructions

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11
Totaline Environmentally Balanced Coil Cleaner Application
Instructions
1. Proper eye protection such as safety glasses is recom -
mended during mixing and application.
2. Remove all surface loaded fibers and dirt with a vacuum
cleaner as described above.
3. Thoroughly wet finned surfaces with clean water and a
low velocity garden hose, being careful not to bend fins.
4. Mix Totaline environmentally balanced coil cleaner in a
2
1
/
2
gallon garden sprayer according to the instructions
included with the cleaner. The optimum solution tempera -
ture is 100°F.
NOTE: Do NOT USE water in excess of 130°F, as the enzymatic
activity will be destroyed.
5. Thoroughly apply Totaline environmentally balanced coil
cleaner solution to all coil surfaces including finned area,
tube sheets and coil headers.
6. Hold garden sprayer nozzle close to finned areas and apply
cleaner with a vertical, up-and-down motion. Avoid spraying
in horizontal pattern to minimize potential for fin damage.
7. Ensure cleaner thoroughly penetrates deep into finned
areas. Interior and exterior finned areas must be thor -
oughly cleaned. Finned surfaces should remain wet with
cleaning solution for 10 minutes. Ensure surfaces are not
allowed to dry before rinsing. Reapply cleaner as needed
to ensure 10-minute saturation is achieved.
8. Thoroughly rinse all surfaces with low velocity clean
water using downward rinsing motion of water spray noz -
zle. Protect fins from damage from the spray nozzle.
Evaporator Coil
Cleaning the Evaporator Coil:
1. Turn unit power off. Install lockout tag. Remove evapora -
tor coil access panel.
2. If economizer or two-position damper is installed, remove
economizer by disconnecting Molex
1
plug and removing
mounting screws.
3. Slide filters out of unit.
4. Clean coil using a commercial coil cleaner or dishwasher
detergent in a pressurized spray canister. Wash both sides
of coil and flush with clean water. For best results, back-
flush toward return-air section to remove foreign material.
Flush condensate pan after completion.
5. Reinstall economizer and filters.
6. Reconnect wiring.
7. Replace access panels.
Refrigeration System Components
Each heat pump refrigeration system includes a compressor, accu -
mulator, reversing valve, dual-function outdoor coil with vapor
header check valve, cooling liquid line with a filter drier and a
check valve, dual-function indoor coil with a vapor header check
valve, and heating liquid line with a check valve and a strainer.
549K 04-06 units have a single compressor-circuit. See Fig. 18
and Tables 3-5 for typical unit piping schematic. Dual-function
outdoor and indoor coils are designed to provide parallel coil cir -
cuits during evaporator-function operation and converging coil
circuits during the condenser-function operation.
Fig. 18 — Typical Piping Schematic
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in reduced unit
performance or unit shutdown.
High velocity water from a pressure washer, garden hose,
or compressed air should never be used to clean a coil. The
force of the water or air jet will bend the fin edges and
increase airside pressure drop.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in accelerated
corrosion of unit parts.
Harsh chemicals, household bleach or acid or basic
cleaners should not be used to clean outdoor or indoor coils
of any kind. These cleaners can be very difficult to rinse out
of the coil and can accelerate corrosion at the fin/tube
interface where dissimilar materials are in contact. If there
is dirt below the surface of the coil, use the environmentally
balanced coil cleaner.
1. Molex is a registered trademark of Molex, Inc.
B
Acutrol
DFT 1
Cooling Liquid Line
A
D
Outdoor Coil
Indoor Coil
C
Heating Mode Liquid Line
Strainer
Filter
Drier LPS/LOC
Accurater
TXV
COMPRESSOR
ACCUMULATOR
HPS