Technical Guide

246681-YTG-C-0611
12 Unitary Products Group
TABLE 7: SPECIFICATIONS AND ELECTRICAL DATA - 1500 THROUGH 2800 CFM ERV’S
* Electric data is for (A12) ZH/ZF/ZJ 078-150 and XP 078-150 only.
** Electric data is for (A15 and A25) ZH/ZF/ZJ 180-300 and XP 180 and 240 only.
Note: Pivoting electrical data applies to VP models only.
Model Numbers
* VR028 - Rooftop Stationary
* VP028 - Rooftop Pivoting
VO028 - O/U Stand Alone
VS028 - S/S Stand Alone
Line Voltage - 60hz 208/230v-3ph 460v-3ph 575v-3ph 208/230v-3ph 460v-3ph 575v-3ph
Fresh Air
Blower
Motor - hp / type 1.5 / Belt 2 / Belt
Wheel Size (dia x width) - in 10 x 10 10 x 10
Motor Speed - rpm 1725 1725
Motor Speed(s) Adjustable Sheave Adjustable Sheave
Bearing Type Ball Ball
Full Load Amps 5.6 2.8 2 7.0 3.5 2.4
Service Factor 1.15 1.15
Exhaust
Air
Blower
Motor - hp Stationary 1.5 / Belt 2 / Belt
Motor - hp Pivoting 3 / Belt -
Wheel Size (dia x width) - in 10 x 10 10 x 10
Motor Speed - rpm 1725 1725
Motor Speed(s) Adjustable Sheave Adjustable Sheave
Bearing Type Ball Ball
Full Load Amps-Stationary 5.6 2.8 2 7.0 3.5 2.4
Full Load Amps-Pivoting 9 4.4 3.6 - - -
Service Factor 1.15 1.15
Wheel
Electrical
Data
Motor - hp (1 phase) 0.17 0.17
Potential Volts 200-208 / 230 200-208 / 230
Motor Speed (RPM)/Wheel (RPM) 825/58 825/58
Full Load Amps 0.6 0.6
Total
Electrical
MCA - Stationary 13.2 6.9 5.1 16.4 8.5 6
OCPD - Stationary 20 10 7 20 10 7
MCA - Pivoting 17.5 8.9 7.1 - - -
OCPD - Pivoting 25 12 10 - - -
Wheel
Data
Wheel Depth x Diameter - in 3 x 37.759 3 x 37.759
Construction / Media Type Segmented Pies / Polymeric Segmented Pies / Polymeric
Enthalpy
Wheel
AHRI
Rating
Data
Nominal Airflow CFM 2600 @ .95 2600 @ .95
EATR - -1.00 H
2
O 6.10% 6.10%
EATR - 0.00 H
2
O 0.40% 0.40%
EATR - +1.00 H
2
O 0.00% 0.00%
OACF - -1.00 H
2
O 0.99% 0.99%
OACF - 0.00 H
2
O 1.13% 1.13%
OACF - +1.00 H
2
O 1.23% 1.23%
Thermal Ratings @ 0” Pressure Diff. Sensible Latent Total Sensible Latent Total
Total
Effective-
ness
100% Airflow Heating 68% 60% 65% 68% 60% 65%
75% Airflow Heating 74% 67% 71% 74% 67% 71%
100% Airflow Cooling 68% 60% 63% 68% 60% 63%
75% Airflow Cooling 74% 67% 70% 74% 67% 70%
Net
Effective-
ness
100% Airflow Heating 68% 60% 65% 68% 60% 65%
75% Airflow Heating 74% 67% 71% 74% 67% 71%
100% Airflow Cooling 68% 60% 63% 68% 60% 63%
75% Airflow Cooling 74% 67% 70% 74% 67% 70%
Curb A/C Unit Curb Height - in 24 on A12, 14 on A15 & A25 24 on A12, 14 on A15 & A25
Weights
Shipping Weight - lbs. 470 470
Net Weight - lbs. 395 395