User manual TOSHIBA RBM-HY1043E INSTALLATION MANUAL

[. . . ] · Be sure to obtain the "Owner's manual" and "Installation manual" from constructor (or dealer). Request to constructor or dealer Please clearly explain the contents of the Owner's manual and hand over it. ADOPTION OF NEW REFRIGERANT This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional refrigerant R22 in order to prevent destruction of the ozone layer. Thank you very much for purchasing TOSHIBA Air Conditioner. · This manual describes the installation method at the outdoor unit side. [. . . ] equivalent length between FS unit and indoor unit Lj Max. real length between FS unit and indoor unit which FS unit control wiring is connected Lh ( 2) Upper outdoor unit Height between indoor unit and outdoor unit H1 Lower outdoor unit Upper outdoor unit Height between Height indoor unit H2 Lower outdoor unit difference Height between outdoor units H3 Height difference between indoor units in group control by one FS unit H4 * * * * *1 :: *2 The farthest indoor unit from 1st branch to be named C, and farthest indoor unit from 1st branch to be named (q). Attached connection cable can be used up to 5 m in pipe length between indoor unit and FS unit. When the pipe length between indoor and FS unit exceeds 5 m, be sure to use the connection cable kit (RBC-CBK15FE). Note 1) Combination of outdoor unit : Header unit (1 unit) + Follow unit (0 to 2 units). Header unit is outdoor unit nearest to the connected indoor units. Note 2) Install the outdoor units in order of capacity. (Header unit > Follow unit 1 > Follow unit 2) Note 3) Refer to outdoor unit combination table in page 5. Note 4) Piping to indoor units shall be perpendicular to piping to the head outdoor unit as <Ex. Do not connect piping to indoor units in the same direction of head outdoor unit as <Ex. 2>. · Restriction to the system Max. · Be sure to use a vacuum pump with counter-flow preventive function so that oil in the pump does not back up in the pipe of the air conditioner while the pump stops. (If oil in the vacuum pump enters in the air conditioner with R410A refrigerant, a trouble is caused in the refrigerating cycle. ) LowHighpressure pressure gauge gauge VL VH Gauge manifold Connected to indoor unit Main pipe Packed valve fully closed (Suction gas side) Outdoor unit Detailed drawing of packed valve Suction gas side service port To gauge manifold Discharge gas side service port Discharge gas side ball valve Liquid side service port Liquid side packed valve To outdoor unit Piping at site Suction gas side packed valve Brazed Service port Fully closed Service port Ball valve fully closed (Discharge gas side) Fully closed P Ø6. 4 Copper pipe To outdoor unit Vacuum pump Piping at site Balance pipe service port To outdoor unit Piping at site Piping at site Balance pipe packed valve Fully closed Packed valve fully closed (Liquid side) Connected to follower outdoor units Packed valve fully closed (Balance pipe) · Use a vacuum pump having a high vacuuming degree (below ­755mmHg) and a large exhaust gas amount (over 40L/minute). · Perform vacuuming for 2 or 3 hours though time differs due to pipe length. In this time, check all packed valves at suction gas, discharge gas, liquid side and balance pipe are fully closed. · If vacuuming valve amount is not decreased to below ­755mmHg even after vacuuming for 2 hours or more, continue vacuuming for 1 hour or more. If ­755mmHg or less cannot be obtained by 3 hours or more vacuuming, check the leaked position. · When vacuuming valve reached to ­755mmHg or less after vacuuming for 2 hours or more, close valves VL and VH of the gauge manifold fully, stop the vacuum pump, leave it as it is for 1 hour, and then check the vacuuming degree does not change. If it changed, there may be a leaked position. · After the above procedure of vacuuming has finished, exchange the vacuum pump with a refrigerant cylinder and advance to the additional charging of refrigerant. 40 5 REFRIGERANT PIPING Addition of refrigerant After vacuuming work, exchange the vacuum pump with the refrigerant bomb and then start the additional charging work of refrigerant. Calculation of additional refrigerant charge amount Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipe at the local site. For refrigerant to be charged in pipe at the local site, calculate the amount and charge it additionally. NOTE) If the additional refrigerant amount indicates minus as the result of calculation, use the air conditioner without addition of refrigerant. Outdoor unit Model Charging amount (kg) MMY-MAP0802FT8 MMY-MAP1002FT8 11. 5 × 1. 3 MMY-MAP1202FT8 Additional refrigerant = Real length × Additional refrigerant charge charge amount at local site amount per 1m liquid pipe (Table 1) of liquid pipe Example : Additional charge amount R (kg) = {(L1 × 0. 025kg/m) + (L2 × 0. 055kg/m) + (L3 × 0. 105kg/m)} × 1. 3 L1 : Real total length of liquid pipe Ø6. 4 (m) L2 : Real total length of liquid pipe Ø9. 5 (m) L3 : Real total length of liquid pipe Ø12. 7 (m) System : 10HP Table-1 Liquid pipe dia. [. . . ] After removing the front panel, remove the wiring cover and the cord clamp. Connect and secure the power supply cable of Flow Selector unit and secure the cord clamp. The control wires are included in terminal block part of the power supply. Take out the control wires outwards through the slit of the terminal block. [. . . ]