Specifications
Manual 2100-533E
Page 2 of 12
CONTENTS
Electrical Specications ........................................... 3
General Description
................................................. 3
920-0074 & -0138 with Intelligent Defrost
............... 3
Control Requirements.............................................. 3
Recommended Control Sequences......................... 4
Control Wiring
.......................................................... 4
Ventilation Airow
.................................................... 4
Performance & Application Data........................5 & 6
Energy Recovery Ventilator Maintenance
........6 & 7
Maintenance Procedures ........................................ 7
Figures
Figure 1 Blower Speed Adjustment ........................ 4
Figure 2 Belt Replacement ..................................... 8
Figure 3 Hub Assembly with Ball Bearings ............. 9
Figure 4 Conguring 8403-067 CO
2
Control ......... 12
Wiring Diagram
Wiring Diagram for 920-0074 QWSERV
............... 10
Wiring Diagram for 920-0138 QWSERV w/I.D.
..... 11
Tables
Table 1 Ventilation Air (CFM)................................. 4
Table 2 Summer Cooling Performance ................. 5
Table 3 Winter Heating Performance .................... 6
BARD MANUFACTURING COMPANY, INC.
BRYAN, OHIO USA 43506