Munters FA6 User Manual

5
Circulating-water system
The total water consumption can be calculated using the
instructions in FA6 Technical manual page 18.
T
he necessary water pressure can be found in table below.
The cold-water supply is to be installed so that any condensa-
tion from the pipes falls into the reservoir. The cold-water
supply is provided with a shutoff valve to shut off the water
supply during service. A water filter having a pore size of 500
µ
m is recommended to be installed.
Direct-water system
The total water consumption can be found in FA6 Technical
manual, page 17.
The cold-water supply is to be installed so that any conden-
sation from the pipe falls into the reservoir. The cold-water
supply is to be provided with a shutoff valve in order to be able
to shut off the water supply during service. A water filter
having a pore size of 500 µm is recommended to be installed.
Air filter
The humidifier is to be equipped with a pre-filter of at least
EU3 class. This will prevent dust with particularly long fibres
from sticking to the inlet side of the humidifier.
For installations where the air contains organic dust, a fine
filter of at least EU7 class is recommended.
Water discharge
The discharge pipe from the humidifier is connected via the
rubber socket and the recommended water trap to a wastewater
system.
The water trap must be sized to take into account the maxi-
mum under pressure in the humidifier reservoir during opera-
tion, i.e. at start-up when the fan is running and the dampers
are fully closed.
To calculate the size of the water trap required:
Suction side (normal installation)
1. With the fan running and all dampers closed, measure the
u
nder pressure (P) downstream.
2. Use the following formula to design the water trap:
A ≥ P + 25 mm
B ≥ (P + 25)/2 + 25 mm
C ≥ 32 mm (Ø 40 mm) if using Munters Water trap.
To avoid design and installation problems of the water trap we
recommend the use of Munters standard Water trap, art no
180CU1060.
Mounting instructions
Suction side fan after humidifierMount pressure reduction
hose A inside AHU unit, after the humidifierPressure side (fan
before humidifier) Mount pressure reduction hose A outside
AHU unit.
Water connection
Pressure requirements
Circulating water Direct water
Required min. pressure at
connection point
500 kPa*
(5.0 bar)
150 kPa
(1.5 bar)
Permitted max. pressure at
connection point
1,000 kPa
(10.0 bar)
1,000 kPa
(10.0 bar)
Pressure requirements at water supply connection
point
∆
A

Munters FA6 Specifications

General

Brand	Munters
Model	FA6
Category	Humidifier
Language	English