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2.4 Coastal Considerations
If installed within one mile of salt water, including seacoasts and inland waterways, models without factory
supplied Seacoast Salt Shields require the addition of BAYSEAC001 (Seacoast Kit) at installation time.
Section 3. Unit Preparation
3.1 Prepare The Unit For Installation
STEP 1 - Check for damage and report promptly to the carrier any damage found to the unit.
STEP 2 - To remove the unit from the pallet, remove tabs by cutting with a sharp tool.
Section 4. Setting the Unit
4.1 Pad Installation
When installing the unit on a support pad, such as a concrete slab, consider the following:
• The pad should be at least 1" larger than the unit on all sides.
• The pad must be separate from any structure.
• The pad must be level.
• The pad should be high enough above grade to allow for drainage.
• The pad location must comply with National, State, and Local codes.
Section 5. Refrigerant Line Considerations
5.1 Refrigerant Line and Service Valve Connection Sizes
5.2 Factory Charge
The outdoor condensing units are factory charged with the system charge required for the outdoor condensing
unit, ten (10) feet of tested connecting line, and the smallest rated indoor evaporative coil match. Always verify
proper system charge via subcooling (TXV/EEV) or superheat (fixed orifice) per the unit nameplate.
4
Line Sizes
Vapor
Model
Line
4TTR5018N
3/4
4TTR5024N
3/4
4TTR5030N
3/4
4TTR5036N
7/8
4TTR5042N
7/8
4TTR5048N
7/8
4TTR5060N
1-1/8
Table 5.1
Service Valve Connection Sizes
Liquid
Vapor Line
Line
Connection
Connection
3/8
3/4
3/8
3/4
3/8
3/4
3/8
3/4
3/8
7/8
3/8
7/8
3/8
7/8
Liquid Line
3/8
3/8
3/8
3/8
3/8
3/8
3/8
18-AC123D1-1C-EN
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