11 - OPERATING LIMITS .......................................................................................................................................................... 34
12 -GAS HEATING (48UA/UH ONLY) .............................................................................................................................. 35
13 - OPTIONS ................................................................................................................................................................................
13.1 - Electric heaters .....................................................................................................................................................................4
12.1 - Introduction ..................................................................................................................................................................... 35
12.2 Preliminary checks before start-up ....................................................................................................................................... 35
12.3 Safety instructions .............................................................................................................................................................. 35
12.4 Installation of the gas heating module ................................................................................................................................... 36
12.5 Commissioning ....................................................................................................................................................................... 37
12.6 Combustion Analysis ...............................................................................................................................................................39
12.7 Operating sequence ...............................................................................................................................................................40
12.8 Maintenance operations .......................................................................................................................................................... 41
12.9 Control of PCH heater .......................................................................................................................................................... 42
13.2 - Hot-water coil .......................................................................................................................................................................4
13.3 - Economizer options (thermostatic or enthalpic) ..............................................................................................................4
13.4 - Manual outside air damper .................................................................................................................................................4
13.5 - Economizer with CO
2
sensor options (thermostatic or enthalpic) ................................................................................4
13.6 - Power exhaust option
13.7
13.8
...........................................................................................................................................................4
................................................................................................................................................4
.........................................................................................................................................4
13.9 - Smoke detector option ........................................................................................................................................................4
13.10 - Smoke detector + DAD option ........................................................................................................................................ 48
13.11 - Fire thermostat option .......................................................................................................................................................4
13.12 -
Duct connection .................................................................................................................................................................4
13.13 - Variable Air Volume ..........................................................................................................................................................4
13.14 - Return air fan options ..........................................................................................................................................................
14 - ROOFCURB ...........................................................................................................................................................................
15 - STANDARD MAINTENANCE .........................................................................................................................................
15.1 - Maintenance programme ....................................................................................................................................................
15.2 - Maintenance instructions ....................................................................................................................................................
15.3 - Level 1 maintenance ............................................................................................................................................................
15.4 - Level 2 maintenance ............................................................................................................................................................
15.5 - Level 3 (or higher) maintenance ........................................................................................................................................
15.6 - Tightening torques for main electrical connections .........................................................................................................
15.7 - Tightening torques for the main bolts and screws ............................................................................................................
15.8 - Indoor/outdoor coils ............................................................................................................................................................
15.9 - Refrigerant volume ..............................................................................................................................................................
15.10 - Characteristics of R-410A .................................................................................................................................................5
15.11 - Servicing recommendations ..............................................................................................................................................5
15.12 - Final recommendations .....................................................................................................................................................5
15.13 - Troubleshooting chart ........................................................................................................................................................5
16 - START-UP CHECKLIST FOR 48/50 UA-UH135-205 ROOFTOP UNITS (USE FOR JOB FILE) .......................5
*$6+($7,1*6(&7,21
"NOTES FOR 48 SERIES UNITS FITTED WITH A GAS BURNER
IMPORTANT: The appliance must be installed in accordance with local safety codes and regulations and is intended
for outdoor use only.
Please read the manufacturer's instructions carefully before starting this unit.
CAUTION: Before installation, check that the local distribution conditions, type of gas and available pressure,
and the power supply and adjustments of the appliance are correct."
The drawings in this document are for illustrative purposes only and is not part of any offer for sale or contract.
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