Installation guide

REFRIGERANT PIPING INSTALLATION

ENGLISH

HR unit HR unit

sealing

Changeover under control Auto changeover Changeover under control

Zoning control group 1 Zoning control group 2

(Max. 8 Indoor Units)

WARNING

• A branch pipe of HR unit allows up to 14.5kW(48kBtu/h) based on cooling capacity of the

indoor unit. (up to 14.5kW(48kBtu/h) for max installation)

• The maximum total capacity of indoor units connected to a PRHR041 HR unit is

58kW(192kBtu/h).

• The maximum number of indoor units connected to a PRHR041 HR unit are 32 indoor

units. (The Maximum indoor units per a branch pipe of HR unit are 8 indoor units)

• There is not operate “Auto-changeover” & “Mode override” function in the zoning group.

• When there are operating indoor units on cooling(heating) mode, another indoor units

aren’t changed on heating(cooling) mode in the zoning group.

Installation of Zoning Control

Some indoor unit can be connected to one port of HR unit.