Specifications

48
ClimateMaster Water-Source Heat Pumps
Tranquility Modular (TRM) Series
0.75 to 3 Ton Vertical Hi-Rise Units
Riser Diameter Sizing
Refer to Riser GPM Sizing for the prefi x to this example.
Each TRM Vertical Stack unit has three riser pipes. The following example will be for one riser pipe (from the top
fl oor to the bottom fl oor), and will be representative of the remaining two riser pipes.
From Table 1 (below) determine the proper riser diameter
needed to satisfy the required GPM's at each unit. Refer to
Table 2 (below) for a summary.
The following nomenclature is used to designate the diam-
eters at the top and bottom of each unit.
Top Cap - Top half of riser is eliminated and sealed.
Bottom Cap - Bottom half of riser is eliminated and sealed.
0.00/1.00 - Indicates top cap/1" bottom.
1.00/1.25 - Indicates 1" top/1.25" bottom.
1.25/0.00 - Indicates 1.25" top/bottom cap.
(from this we develop Table 3)
Note: Transitions limited to 1 nominal
diameter size larger or smaller within
each fl oor.
TOP CAP
0.00/1.00
1.00/1.00
1.25/1.25
Change in Riser
Diameter
Floor 4
Floor 3
Floor 2
Floor 1
1.00
1.25
Values from Table 3 are to be entered on the Riser Piping Schedule. Top diameter must match bottom
diameter of fl oor above.
Table 1
Table 2 Table 3
Floor GPM
Diameter From
Table 1
4
2 1” [19]
3
5 1 [19]
2
8 1” [25.4]
1
10 1.25” [25.4]
Nomenclature
per Unit
Description
0.00/1.00
Top Cap, w/1” Bot Feed
1.00/1.00
1” Full Length Riser
1.00/1.25
1” Top, 1.25” to 1st Floor
1.25/1.25
1.25” Full Length Riser
Maximum GPM 12 20 34 70 125 300
Nominal Riser
Diameter
1” 1-1/4” 1-1/2” 2’ 2-1/2” 3”