Hitachi UTOPIA RAS-4HVRP2E - Drain Piping; Drain Discharging Boss

3 Piping work and refrigerant charge
Drain piping
SMGB0136 rev.0 - 07/2021
65
3
3.6 Drain piping
3.6.1 Drain discharging boss
When the base of the outdoor unit is temporarily utilized as a drain receiver and the drain water in it is discharged, this
drain boss is utilized to connect the drain piping.
Model Applicable Model
DBS-12L RAS-3HVRC2
DBS-26 RAS-(4-6)H(V)(R/N)(C/P)2E

Connecting procedure
1 Insert the plastic cap into the drain boss up to the extruded portions.
2 Insert the boss into the unit base up to the extruded portions.
3 Size of the drain boss is:
- For DBS-12L: 15 mm (O.D.)
- For DBS-26: 32 mm (O.D.)
4 A drain pipe should be eld-supplied.
? NOTE
• Do not use this drain boss set in a cold area, because the drain water may freeze.
• This drain boss is not sufcient to collect all the drain water. If collecting drain water is completely required, provide a drain-pan that is
bigger than the unit base and install it under the unit with drainage.
DBS-12L - RAS-3HVRC2 DBS-26 - RAS-(4-6)H(V)(R/N)(C/P)2E
Drain pipe
Plastic cap
Plastic cap
Drain hole
100 mm
Plastic cap
Drain hole
Push
Push
≥ O.D. ∅ 15 mm
Rubber
cap
Drain hole
(DBS-26)
Drain pipe
Extruted
portions
Drain boss
Drain hole (connexion for
DBS-26)
Drain hole (*)
(*) To cover these drain holes, sealing
pads are included in DBS-26 kit.