Testing Pressures - Yunca Gas jervois Operation, Maintenance And Warranty Manual

PRESSURE TESTING:
The pressures listed on the previous page can be tested using a manometer.
To attach manometer, first remove the inspection cover from back panel. The cover is located directly
behind the control and is removed by unscrewing the two top screws.
This will expose the back of the control so manometer tubes can be attached to the pressure taps as
shown below.
The inlet pressure can be adjusted via in line regulators in the supply to the heater, and the outlet
(operating) pressure by adjusting the valves internal regulator. To locate the valves regulator
adjustment screw the plastic control cover must be removed from the front of the valve. This is done
by removing the bottom screw and inserting a small flat head screwdriver into the slot at the top on
the front of this cover and pulling the cover off.
Refer to fig. 4 below
CONNECTING THE FAN
The fan should be connected to the mains supply (240V 50Hz) via the 3m flex and 3pin plug
provided.
19-07-05 Page 8 of 20 Operation Instructions for Jervois Freestanding Gas Heater March 2002