York YPAL 051, YPAL 061, YPAL 050, YPAL 060 manual Introduction, Heating Section

Introduction

•Compressor Sound Blankets – Optional factory installed sound blankets can be installed to further reduce compressor sound attenuation.

•Replaceable core filter driers – The optional replaceable core filter driers on the eco2 provides a convenient means for maintaining and optimiz- ing the units refrigeration system. Eliminating additional field penetrations into the refrigerant circuit, which could lead to potential problems, reduce the worry of refrigerant circuit contamina- tion.

•Low Ambient Operation – Head-pressure con- trol is accomplished via a VFD motor controller rather than an inefficient and noisy condenser fan damper. By varying the speed of the condenser fan, better control and quieter operation is ob- tained during the colder months. Low ambient controls are available on all systems offering higher rooftop cooling capacity than competitive units.

•Condenser Fan Motors – The condenser fan motors used on the eco2 unit are Totally Enclosed Air Over (TEAO) to provide maximum durability through any season.

•Condenser Coils – Are available in various materials and coatings to suit almost any type of application.Aluminum or copper fins, pre-coated or post-coated fins are available. The coating is applied using an epoxy coating on the aluminum coil. Each coil option is beneficial when the unit must operate under extreme conditions. The use of an epoxy coated coil is recommended for units installed in a corrosive environment.

•Hot Gas By-pass – Is standard on VAV units.

•Condenser Coil Protection – The eco2 is avail- able with a wire mesh guard for optimum coil protection.

FORM 100.50-NOM6 (1207)

Heating Section

•Staged gas heat – The eco2 rooftop gas furnace is an induced-draft gas furnace designed for high efficiency and reliability. The furnace uses an aluminized steel tubular heat exchanger and operates at temperatures sufficient to prevent acidic exhaust gases from condensing in the heat exchanger at low fire rates, unlike drum and tube style furnaces that generate condensation formation. Up to three stages of heat are avail- able.

An optional stainless steel heat exchanger is also available.

•Electric – The eco2 is also available with an electrical heater that can range from 40kW up to 50kW. Depending on the size of the heat required, the eco2 can have 3 steps of control helping to provide tighter control of the supply and zone conditioned air. With the utilization of this multi step function, the eco2 can effectively reduce en- ergy consumption by bringing on smaller stages of heat while maintaining the maximum level of comfort.

•Steam and Hot water – This option will be available in the future.

14 JOHNSON CONTROLS