Cool Air Make-Up Check - Beech ovens REC Series Installation And Operation Manual

Beech Ovens
RND-REC-RGO Manual (R1)

Cool Air Make-up check

It is strongly recommended that the cool air make-up device (Barometric Controller)
have access to well ventilated fresh air, preferably an outside air source. Consult your
mechanical service consultant to design supply. This is done to eliminate the
possibility of the cool air make-up device drawing air from the underside of the oven
causing a negative pressure in the oven cavity. This can result in flame failure and/or
reduced oven efficiency.
Before calibrating the flue, check that the cool air make-up device functions properly. It
is important to make sure that the flap can move freely and that it has not suffered any
damage in transport or during the course of installation.
To check the cool air make-up device‟s function, close the System Damper fully and
check that the cool air make-up flap opens to allow fresh air in. When the fan is
switched off, the cool air make-up flap should then close. This may have a delayed
reaction.
System Damper
flap
NOTE: Before preparing to calibrate the System Damper, ensure that all the variables
that will effect the oven such as air-conditioning, windows and doors and all ancillary
exhaust devices are either on or as they would be during normal operation. This is to
ensure that the calibration will be true when the oven is in full operation in conjunction
with other equipment.
Page 69
Confidential and Proprietary
28/07/2011 (C)
Cool air make-up flap
Flue Transition