Goodman DOWNFLOW, Руководство по установке

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3
DO NOT over torque the 3/4” copper connector to the plastic
drain connection. Using a wet rag or heatsink material on
the short piece to protect the plastic drain pan, complete the
drain line installation. Use Figure 2 as a template for typical
drain pipe routing. This figure shows how to avoid interference
with vent piping.
2” MIN.
3” MIN.
Figure 2
A CHASSIS W ITH 80%
B, C, D CHASSIS WITH 90% B, C, D CHASSIS WITH 80%
A CHASSIS W ITH 90%
Figure 3
8.1 Condensate Drain Pan Break-away Feature
The drain pan (0161D00116) possesses a break-away
feature on the lip located on the front-top and rear-top of
the drain pan. This feature is to be used for uncased in-
stallations, as necessary. The force required to break the
lip is 18lbf uniformly distributed over the feature. A force of
8lbf localized on the corner of the lip can also be applied.
(Applies only for A-size Cabinet) See Figure 4
BREAK AWAY
Figure 4
9. Refrigerant Lines
CAUTION
THE COIL IS SHIPPED UNDER PRESSURE WITH A R-410A GAS
MIXTURE. USE APPROPRIATE SERVICE TOOLS AND FOLLOW
THESE INSTRUCTIONS TO PREVENT INJURY.
WARNING
A QUENCHING CLOTH IS STRONGLY RECOMMENDED TO
PREVENT SCORCHING OR MARRING OF THE EQUIPMENT FINISH
WHEN BRAZING CLOSE TO THE PAINTED SURFACES. USE
BRAZING ALLOY OF 5% MINIMUM SILVER CONTENT.
NOTE: Refrigerant tubing must be routed to allow adequate
access for servicing and maintenance of the unit.
Do not handle coil assembly with manifold or flowrator tubes.
Doing so may result in damage to the tubing joints. Always
use clean gloves for handling coil assemblies.
9.1 Tubing Size/Length
For the correct tubing size, follow the specification for the
condenser/heat pump. Give special consideration to mini-
mizing the length of refrigerant tubing when installing coils.
Refer to Remote Cooling/Heat Pump Technical Publication
TP-107* Long Line Set Application R-410A for guidelines
for line lengths over 80’. Leave a minimum 3” straight in
line set from braze joints before any bends.
9.2 Tubing Preparation
All cut ends are to be round, burr free, and cleaned. Any
other condition increases the chance of a refrigerant leak.
Use a pipe cutter to remove the closed end of the spun
closed suction line.
9.3 Brazing
Braze joints should be made only with the connections
provided external to the cabinet. Do not alter the cabinet
nor braze inside the cabinet. To avoid overheating after
brazing, quench all brazed joints with water or a wet rag.