AUTOMATIC CONTROLS 
For an automatic system we recommend Minneapolis-Honeywell equipment. 
HUMIDITY CONTROLLER (H-41) 
Mount the Humidity controller above the level 
of the plant tops and not less than five (5) feet 
from the floor. (Not on an outside wall). 
There should be no obstruction to free cireula- 
tion of air over the controller. If in a position 
where it may be affected by heat from pipes, 
ducts or radiant heat from the sun, protect with 
a sun shade or baffle against heat. In operation 
the Humidity reading will be slightly higher 
at the plant level than at the Humidistat be- 
cause of the difference in height. For further 
information, installation instructions, etc., see 
insert. 
Showing the humidity 
controller installed un- 
der stun-shade. 
MAGNETIC WATER VALVE (V-437) 
This may be installed at any height above the 
plant bench where it will be protected from 
water. If installed below the bench this valve 
should be protected with a cover and conduit 
used for the electrical connections. 
A suitable strainer should be installed ahead 
of the valve to prevent dirt and sediment in 
the line from lodging on the seat and causing 
improper closure of the magnetic valve. 
A hand operated valve installed ahead of the 
strainer is also recommended. 
When making sweat connections the electrical 
coil assembly should be lifted off the valve 
body, (see insert) to prevent blow torch heat 
from damaging the coil. For further informa- 
tion, installation instructions etc., see inseri. 
— 
whew Lig epee ey 
ED) hoses agnetic Water Valve 
a 
& sa BD Six 
Cast bronze “Y” strain 
er with 200 Monel mesh 
filter screen and on-off 
water valve. 
