Carrier 38HB series Installation, Operation And Maintenance Instructions

Contents

Carrier 38HB series Installation, Operation And Maintenance Instructions Manual pdf 13 page image

H ot w at e r c oil (4 0 H B/H F)Hot water coil for assembly in duct with a three-way valve managedby the electronic control of the unit.HOT WATER COILBATTERIE D’APPOINTBATERÍA DE APOYOHOT WATER COILBATTERIE D’APPOINTBATERÍA DE APOYOEle c t ric a l he at e r (4 0 H B/H F)- The auxiliary electrical heaters are ready for operation in one powerstage.- The electrical heaters acquired with the unit will be incorporated toit modifying the electric panel in the factory, so that it is compatiblewith the electronic control.- The electrical heaters requested for units already shipped will besent in a kit, and the installer will need to assemble the elementsrequired for the operation of the unit and for compliance with thelegal regulations that are applied to the modified unit with regard tosafety.Important: with this option, the air flow controller is included.Frame for assembly of the auxiliary electrical heaters in the fandischarge40HB/HF OutputDimensions (mm)A B C80 / 90 3 to 6 kW (1 row) 150 432 3419 to 12 kW (2 rows) 262 432 3411203 to 6 kW (1 row) 150 432 3419 to 12 kW (2 rows) 262 432 34112 to 18 kW (2 rows) 262 482 443160 3 to 12 kW (1 row) 150 547 44315 to 18 kW (2 rows) 262 547 443Filt e rs (4 0 H B/H F)All model types can substitute the filtering mesh that the units includeregularly with G4 rating, mounted on the same frame.T h e f r a m e h a s a c c e s sdesigned from the right sidefor maintenance.To access the electricalheaters, the screws thatfasten the frame side panelmust be unscrewed as shownin the illustration.Access panelAccess for maintenance:Filter removal:The filter is assembled over a steel metal profile. By dragging a tab, itslides laterally by the rail. Then, the filter is removed vertically.Frame indisplacementTab forslidingRecommendations:- Coil filling: The coil filling must be made with the bleeder valve open untilwater runs through it, which is when it is time to close it. Cut off the water supply and let the bubbles generated go up tothe highest coil point, which is the same as the bleeder valve, andeliminate by opening the purger. Pour more water into the circuit and repeat the previous steps. Activate the water pump (to be foreseen by the installer) andrepeat the previous steps until no air noises are heard in thepiping, which is when the filling of the installation will have beenfinished successfully.- In case of long unit stops, and forcibly if they happen in the winterseason, the coil must be emptied.- Possible water freezing must be avoided: glycolling water or by usinganti-freeze thermostat that triggers the 3-way valve.- The direction of the water flow must be correct and so the followingindications must be observed:Split-system cooling unitsand heat pumps13