CLIMATEMASTER WATER-SOURCE HEAT PUMPS
TSM Vertical Stack
Rev.: 06/15/20
12
ClimateMaster Water-Source Heat Pumps
Before brazing check building plans to be sure you are
installing correct riser; Description of riser, diameter, type,
and shutoff size are all variations. See gure 2 for help in
identifying riser and dimension to set riser runout. Note
dimension is from bottom of cabinet, add if stand or thick
isolation pads are used to get correct dimension from oor.
Description- Supply and return risers can be straight,
transition up, transition down, bottom capped, or top
capped. Drain risers can be straight, transition up, or top
capped. All drain risers and extended range (operation
below 60 ºF entering water temperature) supply and return
risers need insulation.
Riser Diameter (nominal water size)- 1”, 1.25”, 1.50”, 2”,
2.5”, 3”. Top of riser and bottom of riser on oor above must
be same diameter.
Type M has red identication marking (stripe running down
the tube) and Type L (thicker wall) has blue identication
marking. If tube is insulated pull back carefully to check color.
Shutoff and hose size for cabinet/chassis- ½” for C1 (09) and
C2 (12); ¾” for C3 (15) and C4 (18); 1” for C5 (24), C6 (30),
and C7 (36).
Supply riser is always closest to back corner of cabinet,
return riser next, and drain riser in approx. middle of the
cabinet. Risers are 9.25” (235) apart on centerline. See Figure
2 & 3.
If local codes allow, PVC drain risers may be used. All
couplings and reducers are to be eld supplied.
Secure Riser Stack to building structure so stack does not
drop over time. Cabinet slots allow for 1.50” (38mm) maxi-
mum expansion and 1.50” (38mm) maximum contraction, use
expansion devices if you exceed these values, and between
clamps.
NOTICE
: Any risers misplaced, assembled in wrong location,
brazed incorrect, modied incorrect (including cutting off or
extending), runoff at incorrect height, misalignment found
anytime including when cabinets are set, not using expansion
devices if specied, or stack was not supported correctly is
the sole responsibility of the installing contractor.
Cabinet Installation When Risers are Attached (See Fig. 2)
1. Check plans that cabinet is correct for location, cabinet
will have tag and data plate with information, including
unit size, diameters of risers, and electrical data. Move
cabinet close to slab slot, do not carry cabinet using
risers, always use 2 people.
2. Check risers are 3” above the top of cabinet. If not
loosen straps, adjust riser and retighten.
3. Congure supply air openings and attach angles. See
Pre-Installation. If optional stand is required attach to
bottom of cabinet with 4 screws.
4. Start on lowest oor, lift cabinet and angle so risers
pass through slab slot/holes until cabinet is standing
up and setting on oor. Be careful not to damage
either end of riser, do not carry cabinet using risers.
Move cabinet until risers are centered in slot/holes
and cabinet sides are square with proposed walls. If
extensions are used, assemble to risers on lower oor.
Mark set depth in case they drop before brazing.
Dimension should be 1” to 2”. Less than 1” or more
than 2-1/2” is not acceptable. Extensions should never
bottom in swedge of riser. Note: Riser joints should be
well below slab for brazing/inspection.
5. Attach the cabinet assembly to the oor on at least two
sides using sheet metal angles. Additional anchorage
may be provided by installing brackets at the top of the
cabinet.
6. DO NOT attach drywall studs to cabinet. When all
units on a riser are anchored into place, complete riser
joints as follows:
a. Verify that all riser joints are vertically aligned
and that risers penetrate 1” to 2” (25 to 50) into
the swaged joint of the riser below. DO NOT
let riser joint bottom out. Check runouts enter
cabinet at 90°.
b. Braze riser joints with a high-temperature alloy
(such as Phos-copper or Silfos). Soft solder (50-
50, 60-40 or 85-15) or low-temperature alloys are
NOT suitable for this application.
c. Must securely anchor riser stacks to the building
structure with at least one contact point. Typically
at middle oors as needed. Example 40 oor,
anchor at 10, 20, and 30. To accommodate
vertical expansion and contraction use expansion
devices between anchors. DO NOT fasten risers
rigidly within the unit.
d. Verify that unit shut-off valves are closed. DO
NOT OPEN VALVES until the system has been
cleaned and ushed.
e. Pressure check riser - locate and repair leaks.
f. If cabinet is slave, make sure P-Trap Hose is
connected and clamped to riser stub and
condensate pan. Suggest running copper stub
into slave cabinet, cut hose to length, clamp
inside cabinet for future access. If condensate
hose must be rotated, loosen clamp on pan,
rotate, and reclamp. Check condensate drain -
clean pan if needed. Slowly pour 1 to 2 quarts (1
to 2 liters) of water into pan. Water should drain