CAUTION
This system uses R-410A refrigerant that operates
at higher pressures than R-22. No other refrigerant
may be used in this system. Gauge sets, hoses,
refrigerant containers, and recovery systems must be
designed to handle R-410A. If you are unsure, consult
the equipment manufacturer. Failure to use R-410A
compatible servicing equipment can result in property
damage or injury.
CAUTION
The furnace and its individual shut-off valve must
be disconnected from the gas supply piping system
during any pressure testing of that system at test
pressures in excess of 0.5 psig or 13.5 iwg. Pressures
greater than 0.5 psig or 13.5 iwg cause gas valve
damage resulting in a hazardous condition. If the gas
valve is subjected to a pressure greater than 0.5 psig
or 13.5 iwg, it must be replaced. The furnace must
be isolated from the gas supply piping system by
closing its individual manual shut-off valve during any
pressure testing of that system at test pressures in
excess of 0.5 psig or 13.5 iwg.
WARNING
This unit is not to be used for temporary heating or
cooling of buildings or structures under construction.
Due to system pressure, moving parts, and electrical
components, installation and servicing of air
conditioning equipment can be hazardous. Only
qualified, trained service personnel should install,
repair, or service this equipment.
Untrained personnel can perform basic
maintenance functions of cleaning coils and filters
and replacing filters. All other operations should be
performed by trained service personnel.
Observe all precautions in the literature, tags
and labels attached to the unit, and other safey
precautions that apply whenever working on air
conditioning equipment. Wear safety glasses and
work gloves; use quenching cloth for unbrazing
operations; and have a fire extinguisher available
for all brazing operations.
Limitations
The installation of this unit must conform with local
building codes, or in the absence of local codes, with
the National Fuel Gas Code ANSI Z223.1/NFPA 54
and/or the National Gas and Propane Installation
Code CAN/CGA B149.1.
In the US:
1. National Electrical Code ANSI/NFPA 70, latest
edition.
2. National Fuel Gas Code ANSI Z223.1, latest
edition.
3. Gas-Fired Central Furnace Standard ANSI
Z83.8, latest edition.
4. Local gas utility requirements.
Reference
Additional information is available in the following
documents:
•
Variable Air Volume for Tempmaster Omni
Premier Rooftop Units Application Guide
(5514890-TAD)
•
Roof Curbs for Tempmaster Omni Premier
Rooftop Units Application Guide (5553808-
TAD)
•
Sound from Johnson Controls Premier
Rooftop Units Application Guide (5515895-
TAD)
•
California Title 24 Impact on Johnson Controls
Rooftop Units (5553819-TAD)
Approvals
The Premier rooftop units were certified by CSA as
follows:
1. For use as a forced air furnace with cooling
unit (gas heat models).
2. For outdoor installation only.
3. For installation on combustible material and
may be installed directly on combustible
flooring or Class A, Class B, or Class C roof
cover materials.
4. For use with natural gas (convertible to liquid
propane (LP) with kit).
These units are not suitable for use with
conventional venting systems.
Tempmaster
®
Omni™ Premier 25 Ton to 80 Ton Rooftop Units Installation and Maintenance Guide
23
Tempmaster
