[. . . ] For vented double-wall performance consult the factory See performance data notes for operation in the shaded areas Performance stated is at the rated power supply, performance may vary as the power supply varies from the rated Residential Products Technical Guide 50YER 173 GT-PW Water-To-Water (50YER) Series Performance Data — 50YER036 - Heating SOURCE Flow EWT °F GPM WPD PSI FT 60 20 9. 2 Table Continued on Next Page Interpolation is permissible, extrapolation is not All performance data is based upon the lower voltage of dual voltage rated units All performance data is based upon a load coaxial heat exchanger of single-walled copper construction. For vented double-wall performance consult the factory Operation below 40°F EWT is based upon 15% methanol antifreeze solution See performance data notes for operation in the shaded areas Performance stated is at the rated power supply, performance may vary as the power supply varies from the rated 50YER 174 Carrier : Turn to the Exper ts. 2 Interpolation is permissible, extrapolation is not All performance data is based upon the lower voltage of dual voltage rated units All performance data is based upon a load coaxial heat exchanger of single-walled copper construction. [. . . ] For vented double-wall performance consult the factory See performance data notes for operation in the shaded areas Performance stated is at the rated power supply, performance may vary as the power supply varies from the rated Residential Products Technical Guide 50YER 181 GT-PW Water-To-Water (50YER) Series Performance Data — 50YER120 - Heating SOURCE EWT °F GPM Flow WPD PSI 8. 5 Table Continued on Next Page Interpolation is permissible, extrapolation is not All performance data is based upon the lower voltage of dual voltage rated units All performance data is based upon a load coaxial heat exchanger of single-walled copper construction. For vented double-wall performance consult the factory Operation below 40°F EWT is based upon 15% methanol antifreeze solution See performance data notes for operation in the shaded areas Performance stated is at the rated power supply, performance may vary as the power supply varies from the rated 50YER 182 Carrier : Turn to the Exper ts. 8 Interpolation is permissible, extrapolation is not All performance data is based upon the lower voltage of dual voltage rated units All performance data is based upon a load coaxial heat exchanger of single-walled copper construction. Flow must be maintained to a level such that the LWT is maintained above 40°F [4. Otherwise, appropriate levels of a proper anti-freeze should be used in systems with leaving water temperatures of 40°F or below and the JW3 jumper should be clipped. This is due to the potential of the refrigerant temperature being as low as 32°F [0°C] with 40°F [4. 4°C] LWT, which may lead to a nuisance cutout due to the activation of the Low Temperature Protection. JW3 should never be clipped for standard range equipment or systems without antifreeze. furnish and install Carrier “50YER” Water Source Heat Pumps , as indicated on the plans. Capacities and characteristics as listed in the schedule and the specifications that follow. Casing and Cabinet All units must have multiple access panels for serviceability of compressor compartment. The heat pumps shall be fabricated from heavy gauge galvanized steel with powder coat paint finish and a front access panel. Insulation placement shall be designed in a manner that will eliminate any exposed edges. Cabinets shall have separate holes and knockouts for entrance of line voltage and low voltage control wiring. All factory-installed wiring passing through factory knockouts and openings shall be protected from sheet metal edges at openings by plastic ferrules. The control shall provide compressor sequencing (120 size), high and low pressure monitoring, field selectable water coil low temperature sensing, over/under voltage monitoring, and unit performance sentinel (UPS). refrigerant metering shall be accomplished by thermostatic expansion valve only. [. . . ] The Optional Extended Factory Service Labor Allowance Warranty offers additional length of term protection to the consumer by offsetting service labor costs for 10 years. See Limited Express Extended Labor Warranty Certificate CA235 for details. Accessories & Options Hot Water Generator An optional heat reclaiming desuperheater coil of vented double-wall construction suitable for potable water shall be provided. The coil and hot water circulating pump shall be factory mounted inside the unit. [. . . ]