Modular Heating & Ventilating Unit Model IGX-HV • Indirect Gas-Fired Heating • Evaporative • Chilled Water • DX Cooling October 2008
Product Features Model IGX-HV Indirect Gas-Fired Heating and Ventilating Unit Indoor/Outdoor Installations All Greenheck model IGX-HV units feature 80% efficient indirect gas-fired furnace(s), filtered mixing box section, fan section, and are ETL listed to the UL-1995 test standard. Heating capacities range from 100,000 to 1,200,000 BTU/Hr and air flow volumes are available up to 15,000 cfm. A modular design concept enables the flexibility to customize each product for its application.
Control options Heating and Ventilating Control Three heating and ventilating options are available to provide proper tempering and fulfill varying requirements for fresh outdoor air. In all cases, heating and cooling functions are controlled by a Greenheck room thermostat or a DDC system (by others). HV1: 0%-30% Minimum Outdoor Air HV1 is the most common among heating and ventilating units, allowing you to set the minimum outdoor air volume between 0 and 30% of the total supply air volume.
Mixing Box Controls The mixing box (shown at right) includes outdoor air and return air low leakage control dampers in a face and bypass configuration. Either two inch pleated or aluminum mesh filters are available within the mixing box section. Double wall construction is optional. A mixing box control option must be specified for every IGX-HV unit. Greenheck offers eight mixing box control options that accommodate a wide variety of applications. The four EC and four MB options are described below.
Cooling options Evaporative Cooling An evaporative cooling section includes a galvanized steel housing with a louvered intake, two inch aluminum mesh filters and a stainless steel evaporative cooling media housing. The evaporative cooling media is Munters CELdek or GLASdek and has a depth of 12 inches for 90% cooling effectiveness. Drain and overflow lines are conveniently stubbed through the side of the cooling section. The supply line connection is field located where convenient.
Air Performance Housing Size 12 MODEL 800 IGX-HV-108 1,000 1,200 1,500 IGX-HV-109 2,000 2,500 2,000 IGX-HV-110 TOTAL STATIC PRESSURE in inches of WG CFM 2,500 3,000 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BPH RPM BHP 0.50 0.75 1.00 1.25 1.50 1.75 993 .21 1112 .34 1238 .51 880 .36 1004 .65 1154 1.1 805 .48 906 .79 1014 1.22 1109 .26 1228 .41 1347 .59 1014 .45 1113 .77 1244 1.2 912 .59 995 .93 1097 1.39 1216 .31 1325 .47 1445 .68 1140 .54 1219 .90 1329 1.4 1013 .
Accessories Air Filter Gauge Indicates when filters become dirty. An indicator light may be wall/beam mounted or provided with a remote control panel. Motorized Dampers Discharge dampers are available to prevent backdrafts when the fan is not in operation. Mixing box dampers are factory mounted and wired. Fan Spring Vibration Isolation Spring vibration isolators are available in lieu of neoprene isolators for housing sizes H22 and H32 (fan sizes 112 and larger).
Specifications General: Heating and Ventilating unit shall be as manufactured by Greenheck or approved equal provided all specifications are met. Greenheck Model IGX-HV is used as the basis of design. Performance shall be as scheduled on plans. Furnace: Indirect gas fired furnace shall be 80% efficient, ETL Listed and have a blow through fan design. Furnace shall be capable of operation with Natural or LP gas and have a power venting system with post purge cycle.
