Duc T-Typ E Installation - Honeywell 90DM4 User Manual

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 .
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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 .
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90DM4 User Manual
Honeywell
I ntroduction
Installation Instruc tions
1
2
3a
3
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