6- Forklift channels must be removed from the base of ERV before setting unit on curb.
7 - Position unit on roof curb and provide service access to ERV control access door and wheel.
VII -
Installation
3- Set ERV on curb. Verify ERV is positioned on curb properly.
4- Remove barometric exhaust hood from door marked filter access. Install barometric exhaust hood over exhaust blower
outlet.
5- Remove ERV control access panel to connect field wiring.
6- Route class II low voltage wire (3 conductor) from thermostat or energy management through small bushing in end
panel of ERV.
See wiring diagram.
a- Thermostat (dependent) - connect in parallel at rooftop unit with "G", "C" and "W". Then connect matching color at
terminal 1, 2, and 3 respectively on ERV circuit board.
b- Energy Management - p24 VAC to "1" and common, 24 VAC to "2" terminals on ERV circuit board.
c- Thermostat (dedicated) - splice into +24 vac (blue wire) at (control circuit board) transformer connection run wire to
"R" terminal. Then run another wire from "G" terminal to ERV (control circuit board) terminal block #1.
7- All electrical connections must conform to any local codes and current National Electric Codes (NEC) and Canadian
Electric Codes (CEC). Refer closely to unit wiring diagram in unit and/or in these instructions for proper wiring
connections.
8- Refer to the unit nameplate for minimum circuit ampacity (MCA) and maximum overcurrent protection size (fuse).
9- Electrical data is listed on unit rating plate and motor name plates.
10- Connect line voltage power supply to ERV fuse block in control box of unit from disconnect switch.
See wiring
diagram.
11- Ground unit with a suitable ground connection either through unit supply wiring or an earth ground.
NOTE-Unit voltage entries must be sealed weather tight after wiring is complete.
12- Remove motor access panels. Locate belts fastened to blower assembly. Install belt onto motor and blower pulley.
Adjust motor sheave to correct blower RPM for CFM and external static pressure requirements. See charts in this
instruction. Multiple pulley arrangements are available to meet the entire range.
Caution: Blower speed must be adjusted for the given external static pressure and airflow (CFM) requirements. If
blower speed is not adjusted for conditions, possible motor over loading can occur.
13- Replace access panel onto the ERV unit and secure.
PAGE 2
1- Attach duct work to duct flanges on roof curb.
2- Remove forklift channels from base of ERV.
CAUTION
Danger of sharp metallic edges. Can cause injury.
Take care when servicing unit to avoid accidental
contact with sharp edges.
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
e l e c t r i c a l p o w e r t o u n i t O F F a t
disconnect switch(es). Unit may have
multiple power supplies.
WARNING