246681-YTG-B-0607
6 Unitary Products Group
* These balancing dampers work best with”VO” stand alones.
** These balancing dampers work best with”VS” stand alones.
OPTIONAL ACCESSORIES - FACTORY
INSTALLED
Low Ambient Control Kit - Prevents frost formation on
energy wheel heat transfer surfaces by terminating the intake
blower operation when discharge air temperature falls below
a field selectable temperature setting. Intake blower opera-
tion resumes operation after temperature rises above the
adjustable temperature differential.
Pressure Sensor - Measurement device on the UERV to
determine airflow across the Wheel.
Motorized Intake Air Damper - Damper mounts in the out-
door air intake hood. It opens when the UERV is energized
and closes when de-energized.
Stop-Start-Jog - Function that rotates the Enthalpy Wheel
(non-pivoting models) on a preset timer to prevent contami-
nation of the wheel during economizer operation.
ERV Option Codes (ex.: VR028A12H4AL3 would be an R28
series high speed 460 volt UERV with a Low Ambient kit,
Motorized Outside Air, and Stop-Start-Jog kit.)
L1 - Low Ambient Kit (LAK) *
L2 - LAK & Motorized. Outside Air (MOA) *
L3 - LAK, MOA, & Stop-Start-Jog (SSJ) *
L4 - LAK, MOA, SSJ, & Pressure Sensor (PS)
L5 - LAK and SSJ *
L6 - LAK, SSJ, and PS
L7 - LAK and PS
L8 - LAK, MOA, and PS
M1 - Motorized Outside Air (MOA) *
M2 - MOA and Stop-Start-Jog (SSJ) *
M3 - MOA, SSJ, and Pressure Sensor (PS)
M4 - MOA and PS
S1 - Stop-Start-Jog (SSJ) *
S2 - SSJ and Pressure Sensor (PS)
P1 - Pressure Sensor (PS)
NOTE: * denotes only options available for VR074 & VR122.
HOW TO SELECT THE PROPER AIR
CONDITIONING UNIT AND UNITARY ENERGY
RECOVERY VENTILATOR
1. Determine the air conditioning load requirements with
the required amount of outside air without an UERV.
2. Select the proper UERV for the outside air CFM require-
ments and calculate the tonnage reduction through the
York UERV software program.
3. Select the air conditioning unit required by reducing the
load determined in step 1 by the reduction in step 2.
(Example: If the load in Step 1 was 10 tons, and the
reduction in Step 2 was 2.5 tons, select a 7.5 ton unit.)
4. Select the proper UERV based on the select unit. The
York part numbering scheme is as follows:
RSI Model
York
Model
Description Used With
80-950-23 1DB0402 * Balancing Damper, “VO and VS” D*NA/NH/N; 018-060
80-950-24 1DB0401 * Balancing Damper, “VO and VS” D*EB/EH/EM/B*HA/HH 018-060
80-950-13 1DB0403 * Balancing Damper, “VO and VS” DM/DF/DH 036-072 & BQ 036-060
80-950-29 1DB0404 * Balancing Damper, “VO and VS” DM/DF/DH 078-150 & BP 078-150
80-950-19 1DB0405 ** Balancing Damper, “VO and VS” DM/DH 180 & BP 180
80-950-18 1DB0406 ** Balancing Damper, “VO and VS” DM/DH 240-300, DJ/DR 180-300 & BQ 240
Ventilator
Wheel Type
CFM = 2800
York Unit Cabinet Size
Blower Speed (H for High, M for Medium)
Voltage
Duct Type (A, D or W)
Option Code (see list above)
Generation
V
R
028 A12 H 4 A L3 1