Installing A Proven Draft Switch - ENERVEX IPVB 300 Installation & Operating Manual

3002600 08.17
Power Venter and motor specifications can be found under
"Section 2.1 Dimensions and Capacities". The power
venter is equipped with a variable speed motor. Fig. 11
below shows a typical wiring diagram utilizing a Variable
Frequency Drive (adjusting the speed is possible). If it is not a
requirement that the speed can be adjusted, a motor starter
should be installed in lieu of the VFD, if required by local
codes.
After wiring, make sure the motor is rotating in the proper
direction. This is marked on the motor end cover. If the
rotation is incorrect, swap the two wires going to the motor
terminals, U1 and W1 as shown in paragraph 4.6 . (This does
NOT apply to the IPVB 300).
ENERVEX EDRIVE
1 2 6 7 G L1
G L1
POWER SUPPLY
200-230/3/48-62
380-480/3/48-62
TO EBC30/31
CONTROLLER
ENERVEX EDRIVE
1 2 6 7 G L1
G L1
POWER SUPPLY
200-230/3/48-62
380-480/3/48-62
TO MEC18/EBC12
CONTROLLER

4.4 INSTALLING A PROVEN DRAFT SWITCH

A safety system must be interlocked with the appliance to
prevent flue gas spillage from the appliance and/or leakage
through the fan or stack. The safety system should utilize a
Proven Draft Switch (PDS-1) to ensure a negative pressure
in the stack at all times. The device must be interlocked
with the heating appliance(s) so it shuts down in case of
insufficient draft, fan failure or power failure. Please refer to
the PDS Installation Manual for wiring instructions.
If the installation includes an EBC12* or EBC 31 Fan Control,
a PDS-1 may not not required as the function is integrated in
the control.
We recommend to interlock the appliances with the
controller.
*The EBC12 can only interlock one appliance.
For more information, please consult ENERVEX.
100FT (MAX)
50FT (MAX)
IPVB MOTOR 200V
L2 L3 U V W
L2 L3
DISCONNECT
IPVB MOTOR 200V
L2 L3 U V W
L2 L3
DISCONNECT
Fig 11
IPVB MOTOR 400V
U1 V1 W1 U1
IPVB MOTOR 400V
U1 V1 W1 U1
12
V1 W1
V1 W1