The outdoor fan high static pressure support and priority operation mode setting (cooling / heating / number of
units / or priority indoor unit) functions are available by setting relevant switches provided on the interface P.C.
board of the outdoor unit.
Purpose/characteristics
This function is used when connecting a duct to the discharge port of an outdoor unit (as part of, for example, unit
installation on the floor by floor installation.)
Setup
Turn ON the DIP switch [SW10, Bit 2] provided on the interface P.C. board of the outdoor unit.
This function must be enabled with every discharge duct connected outdoor unit for both of the header and follower
units.
Specification
Increase the speed of the propeller fan units on the outdoor fan to allow the installation of a duct with a maximum
external static pressure not greater than specified in the table below. If a discharge duct with a resistance greater
than 0.061 In WG (15 Pa) is to be used, enable this function. The maximum external static pressures of single
units are shown below (Table 1). In the case of combined use of multiple outdoor units, set all the units to the
same maximum external static pressure as the one with the lowest maximum external static pressure (see
table2).
Table 1: Maximum External Static Pressures of Single Outdoor Units
(*) Calculate duct resistance from outdoor unit air flow.
Table 2: Maximum External Static Pressures for Combined Use of Single Units
7. Applied control for Outdoor Unit
7-1-1. Outdoor Fan High Static Pressure Shift
7-1. Applied Control for Outdoor Unit
− 65 −
Model MMY-
MAP0726*
Maximum external static pressure 0.24 InWG (60Pa)
(*) Outdoor unit air flow (CFM)
5900
Maximum external static pressures for combined use of base unit
Combination
capacity type
Header
outdoor unit
Follower
outdoor unit1
Follower
outdoor unit2
Maximum external
static pressure
inWG
Outdoor unit
0.24
144 type 072 type - Standard Model 0.24
072 type 072 type - - Standard Model
072 type
To Next Page
Loading...
Need help?
General
