NEC RIH-6867 - Manual (Page 20)

Installation instructions
Piping Joints Thermal Insulation:
Wrap the piping joints with thermal
insulation materials and then wrap
with a vinyl tape.
Piping Thermal Insulation:
a. Place the drain hose under the piping.
b. Insulation material uses polythene foam over 6mm in thickness.
Note: Drain hose is prepared by user.
Drain pipe should point downward for easy drain flow.
Do not arrange the drain pipe twisted, sticking out or wave
around, do not immerse the end of it in water.
If an extension drain hose is connected to the drain pipe, make
sure to thermal insulated when passing along the indoor unit.
When the piping is directed to the right, piping, power
Cord and drain pipe should be thermal insulated and
fixed onto the back of the unit with a piping fixer.
Thermal insulation
wrapped with vinyl type
Small
pipe
Large pipe
Thermal insulation
tube
Power connecting cord
Drain hose
(prepared by user)
A. Insert the pipe fixer to the slot. B. Press to hook the pipe fixer onto the base.
Base
Base
Base Piping fixer Piping fixer
Hook here
Insert here
drain
hose drain
hose
large
pipe large
pipe
small
pipe small
pipe
b. Pre-tighten them with fingers at first, then use the wrenches.
a. Connect indoor unit pipes with two wrenches. Pay special attention
to the allowed torque as shown below to prevent the pipes, connectors
and flare nuts from being deformed and damaged.
Piping Connection:
Pipe size Model
24K
24K
0.6mm
0.6mm
22mm
27mm 3.5kg.m
7.5kg.m Liquid Side (3/8 inch)
Gas Side (5/8 inch)
Torque Nut width Min.thickness
18
Note: The connection pipe will be provided or purcha sed by cus tomer.
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