Superior Radiant PREMIER VS-VH Installation, Operation And Service Instructions page 46

Control Methods and Devices
1. Single Thermostat: Entire system operates as one Heating Zone, ON or OFF using one Relay to control
the Vacuum Pump, Vacuum Switch and Burner Power (Figure 41).
2. Multiple Thermostats: System Branches operate as multiple individual Heating Zones which can be
separately controlled ON or OFF. Burners are controlled ON/OFF by the Thermostat they are
wired/connected to using one of the following control devices:
a. Relays (Two) - 2 Thermostats - Hardwired control of Vacuum Pump and Burner Power depending
on individual Thermostat status change (Figure 42).
b. SRP Accu-Rate
i. 1 Pump (Refer to LT230)
ii. 2 Pumps (Refer to LT231)
c. SRP Accu-Rate
i. VE132-X-5 Modulating with Motorized Dampers
ii. VE132-X-6 Modulating with VFD
Burners
Maximum current draw is 0.2 A per burner. Burners internally operate on 24 VAC with a 120 VAC 60 Hz Power
Cord and transformer provided. The Power Cord uses a standard single phase North American three-pronged plug
(grounded) that is 3 ft. (90 cm) long and extends from the back of the Burner. Burner wiring between the
transformer, gas valve, transformer etc. has been completed by the manufacturer as shown in the Figure 41. Wiring
label is located on the burner service door.
Any repair/replacement of the manufacturer's wiring must have a minimum temperature rating of at least 105°C and
supply circuit wiring shall have a minimum size of 18 AWG.
Fresh Air Blower Interlock
If a Blower is installed to achieve the 40 CFM per 100,000 BTU/hr. of Fresh (Combustion) Air Supply requirement
then an 'interlock' connection must be made between the Blower and Vacuum Switch (and therefore the Vacuum
Pump).
Series Premier VS-VH
TM
Digital Panel
TM
Pro Panel (Refer to manual LT235)
Figure 41. Burner Wiring Diagram
Page 46 LT135 Dec 2019