511105
90DM4 User Manual
15
2/07
Honeywell
I
ntroduction
Installation Instruc tions
Duct-type I
nstallation
T h e 90DM4 m ay b e d uc t-m ounted . It will op erate m ost effec tiv ely wh en
th e airsp eed is b etween 500 and 4,000 ft/m inute (2.5 to 20.3 m /sec ),
and it m ay b e installed to m onitor eith er inc om ing fresh air or outg oing
ex h austed air. In ord er to op tim iz e its op eration we rec om m end
installation on a straig h t sec tion of d uc t 3 feet (1 m ) away from any
c urv ed d uc twork .
Figure 3: Duct Mount I
nstallation Diagram
1.
Drill a 3 c m (1.18 in.) op ening for th e sam p ling tub e.
2.
Insert th e sam p ling tub e with its lateral air h oles into th e ap p rop riate
op ening , orienting th e air h oles ( F L O W ind ic ation) to fac e th e
airflow.
3 .
K noc k out th e rear h ole of th e oc tag onal b ox
4.
P lac e th e b ox on th e p lastic p late. (T h e b ox m ounting h oles m ust b e
v ertic ally oriented ).
5.
Mount th e b ox with two # 8 m etal sc rews.
6 .
Install th e elec tric wire in th e oc tog onal b ox .
1
2
3
5
6
9
3a
3b
