Proheat X45–School Bus - Manual (Page 41)

PROHEAT INSTALLATION & SERVICE 3-20
OPTION B – Preheat and Supplemental Mode
The instructions below are general in nature. It is up to the installer to select
appropriate switches and use proper electrical connection methods. If more
information is required, contact your Authorized Proheat Dealer or Proheat
Product Support at www.proheat.com
1. Identify engine run signal. This may be off the alternator, multiplex or others.
2. Install hardware as required on the vehicle as shown in Figure 3-29.
3. Choose either Preheat Option 1 or Preheat Option 2. Install hardware as
required on the vehicle as shown in Figure 3-29.
4. Install an Indicator Light near the vehicle operator.
3.5.12
3.5.13
WARNING
When wiring for Supplemental
Mode, ensure to install Mechanic’s
Disable Switch in order to
disable Supplement Mode for
safety requirements.
WARNING
DO NOT connect an ON/OFF Switch
and a Timer in the same circuit.
NOTICE
Supplemental operation will not
override the Standard Mode operation
(Proheat Timer runs in Standard Mode).
OPTION C – Standard Mode (Proheat Timer Optional)
and Supplemental Mode
The instructions below are general in nature. It is up to the installer to select
appropriate switches and use proper electrical connection methods. If more
information is required, contact your Authorized Proheat Dealer or Proheat
Product Support at www.proheat.com
1. Install the timer as per Section 3.5.3 or the switch as per Section 3.5.4.
See Figure 3-29.
2. Identify engine run signal. This may be off the alternator, multiplex or others.
3. Route and connect engine run signal to wire A on the auxiliary input
connector. Install hardware as required on the vehicle.