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UNIT INFORMATIONUNIT INFORMATION
Service Literature
WARNING
To prevent serious injury or death:
1- Lock-out/tag-out before performing maintenance.
2- If system power is required (e.g., smoke detector
maintenance), disable power to blower, remove
fan belt where applicable, and ensure all
controllers and thermostats are set to the “OFF”
position before performing maintenance.
3- Always keep hands, hair, clothing, jewelry, tools,
etc., away from moving parts.
Table of Contents
Options / Accessories . . . . . . . . . . . . . . . . . . . . . Page 2
Spec. Gas Heat High Altitude. . . . . . . . . . . . . . . . . . . Page 7
Blower Data . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .Page 7
Electrical Data . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .Page 21
I Unit Components. . . . . . . . . . .. . . . . . . . . . . . . . . . .Page 25
II Placement and Installation . . . . .. . . . . . . . . . . . . .Page 35
III Start-Up and Installation . . . . . . . . . . .. . . . . . . . .Page 35
IV Charging. . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . .Page 37
VIII Diagrams . .. . . . ... . . . . . .. . . . ... . . . . . .. . . . .Page 51
The ZGB packaged gas units are available in standard
-
aluminized steel tube heat exchangers.
Information contained in this manual is intended for use
subject to change. Procedures outlined in this manual are
presented as a recommendation only and do not super-
sede or replace local or state codes.
for the proper rigging technique. Stacking brackets can be
removed or left on the unit permanently. If brackets are
replaced.
WARNING
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at disconnect
switch(es). Unit may have multiple power
supplies.
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and
wear gloves and protective clothing.
ZGB SERIES
3, 4, 5 and 6 Ton
10.6 to 20.3 kW
ZGB036, 048, 060, 074
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