Carrier AquaSnap 30MPA Series Controls, Start-up, Operation, Service, And Troubleshooting

Also see for AQUASNAP 30MPA: User manual Operation and service manual Installation instructions

Carrier AquaSnap 30MPA Series Controls, Start-up, Operation, Service, And Troubleshooting Manual pdf 37 page image

37Table 34 — Minimum Flow Rates and Minimum Loop Volume — EnglishLEGENDTable 35 — Minimum Flow Rates and Minimum Loop Volume — SILEGENDSTART-UP AND OPERATIONCompressor crankcase heaters must be on for 24 hours be-fore start-up. To energize the crankcase heaters, close the fielddisconnect. Leave the compressor circuit breakers off/open.The crankcase heaters are now energized.NOTE: Refer to Start-Up Checklist on pages CL-1 to CL-8.PRELIMINARY CHARGE (30MPA) — Refer to GTAC II(General Training Air Conditioning), Module 5, Charging, Re-covery, Recycling and Reclamation for charging procedures.The 30MPA units (condenserless) are shipped with a nitro-gen holding charge only. Leak check the 30MPA unit, dis-charge and liquid lines, and the condenser. Be sure the liquidline service valve is open. After leak check is completed, sys-tem must be evacuated and dehydrated. Following the evacua-tion, the system must be fully charged.The liquid charging method is recommended for completecharging or when additional charge is required.Using the liquid charging method and charging by weightprocedure, charge the circuit with the amount of Puron refriger-ant (R-410A) with the sum of the operating charge listed in Ta-ble 36 for the base unit, the liquid line charge and the operatingcharge of the condenser as the preliminary charge.UNIT SIZEFLOW RATE NORMAL AIR CONDITIONING APPLICATIONGal./TonPROCESS COOLING OR LOW AMBIENTOPERATION APPLICATIONGal./TonEVAPORATOR CONDENSERGal./Min Gal./Min Std Unit HGBP Digital Std Unit HGBP Digital30MP015 22 22 12 2 N/A 12 3.4 N/A30MP020 28 28 6 4 3 10 10 630MP030 43 43 6 4 3 10 10 630MP040 55 55 3 3 3 6 6 630MP045 64 64 3 3 3 6 6 630MP050 70 70 6 4 N/A 10 6 N/A30MP055 77 77 6 4 N/A 10 6 N/A30MP060 84 84 6 4 N/A 10 6 N/A30MP065 91 91 6 4 N/A 10 6 N/A30MP071 104 104 6 4 N/A 10 6 N/AHGBP — Hot Gas BypassUNIT SIZEFLOW RATE NORMAL AIR CONDITIONING APPLICATIONL per kWPROCESS COOLING OR LOW AMBIENTOPERATION APPLICATIONL per kWEVAPORATOR CONDENSERL/s L/s Std Unit HGBP Digital Std Unit HGBP Digital30MP015 1.4 1.4 13.0 8.6 N/A 13.0 13.0 N/A30MP020 1.8 1.8 6.5 4.3 3.3 10.8 10.8 6.530MP030 2.7 2.7 6.5 4.3 3.3 10.8 10.8 6.530MP040 3.5 3.5 3.3 3.3 3.3 6.5 6.5 6.530MP045 4.0 4.0 3.3 3.3 3.3 6.5 6.5 6.530MP050 4.5 4.5 6.5 4.3 N/A 10.8 6.5 N/A30MP055 4.9 4.9 6.5 4.3 N/A 10.8 6.5 N/A30MP060 5.3 5.3 6.5 4.3 N/A 10.8 6.5 N/A30MP065 5.8 5.8 6.5 4.3 N/A 10.8 6.5 N/A30MP071 6.6 6.6 6.5 4.3 N/A 10.8 6.5 N/AHGBP — Hot Gas BypassIMPORTANT: Before beginning Pre-Start-Up or Start-Up,review Start-Up Checklist at the back of this publication.The checklist assures proper start-up of a unit and providesa record of unit condition, application requirements, systeminformation, and operation at initial start-up.OIL SIGHTGLASSFig. 25 — Sight Glass LocationCAUTIONCrankcase heaters are wired into the control circuit, so theyare always operable as long as the main power supply dis-connect is on (closed), even if any safety device is open.Compressor heaters must be on for 24 hours prior to thestart-up of any compressor. Equipment damage could resultif heaters are not energized for at least 24 hours prior tocompressor start-up.