NTI WF200 Installation And Operation Manual page 14

Installation and Operation Manual
WF200 Installed as Stand-alone Boiler
The WF200 is factory supplied with controls necessary for a typical installation as an add-on to oil boiler; when
installed as a stand-alone, the installer must supply a high limit Triple Aquastat (e.g. L8124A) to operate the
damper motor and circulator. In addition to the preceding General Field Wiring and the General Boiler
System Plumbing instructions, use the follow instructions to complete the plumbing and wiring for a WF200
installed as a stand-alone boiler. It is strongly recommended to utilize a bypass line between the supply and
return, as a wood burning unit does not recover cold water return as quickly as an oil burning unit.
Figure 5-3 WF200 Installed as Stand-alone – Plumbing Arrangement
WF200 Wood Boiler
B
C Wood Boiler Circulator
E Isolation Valves
Expansion tank
F
G Zone Valves (N.C.)
H Dump Zone Valve (N.O.)
I Existing Fill/Backflow Valve
Pressure Relief Valve
J
L8124A Aquastat or Equivalent
K
(field supplied)
L4081A Aquastat
L
M Damper Motor
Q Water Supply
R Heating System Return
Heating System Supply
S
T Supply to Zones
14
Figure 5-4 WF200 Installed as Stand-alone – Wiring Diagram
WF200