Attached Fittings; Construction Inspection - EAS Electric VRV Installation And Owner's Manual

6) Reamer
7) Gas leak detector
8) Tape measure
9) Thermometer
10) Mega-tester
11) Electro circuit tester
12) Hexagonal wrench
13) Flare tool
14) Pipe bender
15) Level vial

2. ATTACHED FITTINGS

Please check whether the following fittings are of full scope. If there are some spare fittings , please restore them carefully.
INSTALLATION FITTINGS

3. CONSTRUCTION INSPECTION

3.1 Unpacking installation
1.After unpacking, check if there's trasportation injuries. Declare
to the transportation agent immediately in written form.
2.Check if the models, specifications and quantity are conform to
the content in the contract.
3.Keep the operation manual and check the accessories when
unpacking.
3.2 Refrigerant pipe
1.Use the central air-conditioner specified refrigerant pipe.
2.Refrigerant pipe with specified diameters and thickness should
be used.
3.Nitrogen blanket protection should be applied when welding
copper pipes. Fill nitrogen of 0.2kgf/cm
nitrogen when the copper pipe completely cooled after welding.
4.Heat preservation process should be applied to refrigerant pipe.
5.After installing refrigerant pipe, indoor unit can't be powered on
before tightness test and vaccumizing.
3.3 Tightness test
After installing refrigerant pipe, fill 40kgf/cm
from both gas and liquid sides to process a 24-hour tightness test.
NAME
1. Outdoor unit installation manual
2. Outdoor unit owner's manual
3. Indoor unit owner's manual
4. Installation Instructions:
Indoor Unit Manifold
5.Straight screwdriver
6.Connection pipe
7.Curved connection pipe
before welding. Cut off
2
2 (3.9MPa)) nitrogen
4
16) Metal saw
17) Gauge manifold (Charge hose:R410A special requirement)
18) Vacuum pump (Charge hose:R410A special requirement)
19) Torque wrench
1/4(17mm)16N•m (1.6kgf•m)
3/8(22mm)42N•m (4.2kgf•m)
1/2(26mm)55N•m (5.5kgf•m)
5/8(15.9mm)120N•m (12.0kgf•m)
20) Copper pipe gauge adjusting projection margin
21) Vacuum pump adapter
SHAPE
3.4 Vaccumizing
Vaccumizing from both gas and liquid sides after tightness test.
(Pressure of vacuum should be -0.1MPa )
3.5 Refrigerant adding
1.Calculating refrigerant adding amount according to the
diameters and length(actual length) of indoor/outdoor unit liquid
side pipes.
2.Mark refrigerant adding amount, pipe diameters of pipe, length
(actual length) and height difference between indoor and
outdoor unit on the usage confirm form of outdoor unit(on
electronic control box plate) in advance, in order to further use.
3.6 Electric wiring
1.Please choose the power supply capacity, diamters of wires
according to the design manual. Power supply cables of
air-conditoner should be thicker than cables used in normal
electric motor.
2.To prevent air-conditioner from malfunctioning, don't entwine
power supply wires (380V 3N~)and connecting wires of indoor
and outdoor unit(low voltage wires).
3.Power on indoor unit after tightness test and vaccumizing.
4.For function dial code, please refer to dial code instruction
table usage.
3.7 Trial running
Trial running can be processed after 12-hour (or above)
preheating of outdoor unit, otherwise it could damage the system.
QUANTITY
1
1
1
1
1
1
1
V.2