Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and the National Electrical Code (NEC) for special installation requirements.
Understand the signal words — DANGER, WARNING, and CAUTION. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARN- ING signifies hazards that could result in personal injury or death. CAUTION is used to identify unsafe practices, which would result in minor personal injury or product and property damage.
Recognize safety information. This is the safety-alert symbol ( 
). When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.
Electrical shock can cause personal injury or death. Before installing or servicing system, always turn off main power to system. There may be more than one disconnect switch. Turn off accessory heater power if applicable.
GENERAL
This Installation and Start-Up Instructions literature is for Aquazone™ Rooftop Water Source Heat Pump systems.
Rooftop Water Source Heat Pumps (WSHP) are single- package outdoor units with electronic controls designed for year-round cooling and heating.
IMPORTANT: The installation of water source heat pump units and all associated components, parts, and accessories which make up the installation shall be in accordance with the regulations of ALL authorities having jurisdiction and MUST conform to all applicable codes. It is the responsi- bility of the installing contractor to determine and comply with ALL applicable codes and regulations.
INSTALLATION
Step 1 — Check Jobsite — Installation, operation and maintenance instructions are provided with each unit. Before unit start-up, read all manuals and become familiar with the unit and its operation. Thoroughly check out the system before operation. Complete the inspections and instructions listed below to prepare a unit for installation. See Table 1 for unit physical data.
To avoid equipment damage, do not use these units as a source of heating or cooling during the construction process. The mechanical components and filters used in these units quickly becomes clogged with construction dirt and debris which may cause system damage.
Step 2 — Check Unit — Upon receipt of shipment at the jobsite, carefully check the shipment against the bill of lading. Make sure all units have been received. Inspect the car- ton or crating of each unit, and inspect each unit for damage. Ensure the shipping company makes proper notation of any shortages or damage on all copies of the freight bill. Concealed
damage not discovered during unloading must be reported to the shipping company within 15 days of receipt of shipment.
NOTE: It is the responsibility of the purchaser to file all necessary claims with the shipping company.
1.Verify unit is correct model for entering water tempera- ture of job.
2.Be sure to provide freeze protection for piping, as re- quired. Well water applications are especially susceptible to freezing.
3.Be sure the installation location is isolated from sleeping areas, private offices and other acoustically sensitive spaces.
4.Check local codes to be sure a secondary drain pan is not required under the unit.
5.Be sure unit is mounted at a height sufficient to provide an adequate slope of the condensate lines. If an appropri- ate slope cannot be achieved, a field-supplied condensate pump may be required.
6.Provide sufficient space for duct connection.
7.Provide adequate clearance for filter replacement and drain pan cleaning. Do not allow piping, conduit, etc. to block filter access.
8.Provide sufficient access to allow maintenance and servicing of the fan and fan motor, compressor and coils.
9.Provide an unobstructed path to the unit. Space should be sufficient to allow removal of unit if necessary.
10.Provide ready access to water valves and fittings, and screwdriver access to unit side panels, discharge collar, and all electrical connections.
11.Where access to side panels is limited, pre-removal of the control box side mounting screws may be necessary for future servicing.
STORAGE — If the equipment is not installed immediately upon its arrival at the jobsite, it should be left in its shipping carton and stored in a clean, dry area of the building or in a warehouse. Units must be stored in an upright position at all times. If unit stacking is necessary, stack 50RTG03-10 units a maximum of 2 high. Do not stack units larger than 50RTG10. Do not remove any equipment from its shipping package until it is needed.
PROTECTION — Once the units are properly positioned on the jobsite, they must be covered with either a shipping carton, vinyl film, or an equivalent protective covering. Open ends of pipes stored on the jobsite must be capped. This precaution is especially important in areas where painting, plastering, or spraying of fireproof material, etc. is not yet complete. Foreign material that is allowed to accumulate within the units can pre- vent proper start-up and necessitate costly clean-up operations.
Before installing any of the system components, be sure to examine each pipe, fitting, and valve, and remove any dirt or foreign material found in or on these components.
DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes (e.g., attics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can significantly reduce performance, reliability, and service life. Always move units in an upright position. Tilting units on their sides may cause equipment damage.
