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c l i m a t e m a s t e r. c o m
T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y
Tr a n q u i l i t y
®
2 2 ( T Z ) S e r i e s
R e v i s e d : 0 1 / 2 1 / 1 3
Operating Limits
Environment – Units are designed for indoor installation only. Never install units in areas subject to freezing or where
humidity levels could cause cabinet condensation (such as unconditioned spaces subject to 100% outside air).
Power Supply – A voltage variation of +/– 10% of nameplate utilization voltage is acceptable.
Determination of operating limits is dependent primarily upon three factors: 1) return air temperature. 2) water
temperature, and 3) ambient temperature. When any one of these factors is at minimum or maximum levels, the
other two factors should be at normal levels to ensure proper unit operation. Extreme variations in temperature and
humidity and/or corrosive water or air will adversely affect unit performance, reliability, and service life. Consult Table
9a for operating limits.
Table 9a: Operating Limits
Operating Limits
TZ
Cooling
Heating
Air Limits
Min. ambient air, DB
Rated ambient, DB
Max. ambient air, DB
Min. entering air, DB/WB
Rated entering air, DB/WB
Max. entering air, DB/WB
45ºF [7ºC]
80.6ºF [27ºC]
130ºF [54.4ºC]
65/45ºF [18/7ºC]
80.6/66.2ºF [27/19ºC]
100/75ºF [38/24ºC]
39ºF [4ºC]
68ºF [20ºC]
85ºF [29ºC]
50ºF [10ºC]
68ºF [20ºC]
80ºF [27ºC]
Water Limits
Min. entering water
Normal entering water
Max. entering water
*20ºF [-6.7ºC]
50 – 110ºF [10 – 43.3ºC]
120ºF [48.9ºC]
20ºF [-6.7ºC]
30-80ºF [-1.1 – 26.7ºC]
*120ºF [48.9ºC]
Normal Water Flow
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
*When unit is equipped with Internal Secondary Pump option (code 7 in position eleven of the unit model
number) the minimum entering water temperature is 30ºF [-1.1ºC] and the maximum entering heating water
is 90ºF [32.2ºC].
Unit Starting and Operating Conditions
Table 9b: Starting Limits
*When unit is equipped with Internal Secondary Pump option (code 7 in position eleven of the unit model
number) the minimum entering water temperature is 30ºF [-1.1ºC] and the maximum entering heating water
is 90ºF [32.2ºC].
Operating Limits
TZ
Cooling
Heating
Air Limits
Min. ambient air, DB
Rated ambient, DB
Max. ambient air, DB
Min. entering air, DB/WB
Rated entering air, DB/WB
Max. entering air, DB/WB
45ºF [7ºC]
80.6ºF [27ºC]
130ºF [54.4ºC]
60/45ºF [16/7ºC]
80.6/66.2ºF [27/19ºC]
100/75ºF [38/24ºC]
39ºF [4ºC]
68ºF [20ºC]
85ºF [29ºC]
50ºF [10ºC]
68ºF [20ºC]
80ºF [27ºC]
Water Limits
Min. entering water
Normal entering water
Max. entering water
*20ºF [-6.7ºC]
50 – 110ºF [10 – 43.3ºC]
120ºF [48.9ºC]
20ºF [-6.7ºC]
30-80ºF [-1.1 – 26.7ºC]
*120ºF [48.9ºC]
Normal Water Flow
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Commissioning Conditions
Consult Table 9b for the particular model. Starting conditions vary depending upon model and are based upon the
following notes:
Notes:
1. Conditions in Table 9b are not normal or continuous operating conditions. Minimum/maximum limits are start-up
conditions to bring the building space up to occupancy temperatures. Units are not designed to operate under
these conditions on a regular basis.
2. Voltage utilization range complies with AHRI Standard 110.