King Electric TCM - Manual (Page 8)

STEP 3: MEASURE THE RESISTANCE OF THE HEATING CABLE
Using a digital ohm-meter, measure the resistance of the TC/TCM cable. Compare the measured value with the resistance listed on the label of
the power lead.
Remember to record the measured resistances on TC Cable / TCM Mat Testing Log under the section “Test Record # 1 Before Installa-
tion”. Documenting the resistance at each stage of the installation is required for warranty purposes.
STEP 4: INSTALLING THE TC/TCM CABLE/MAT
Install the cable/mat. The cable and mat is usually installed attached to the rebar or wire mesh of the foundation. Install the TC/TCM cable/mat
according to the sketch made in Step 1. The cable/mat should be secured to prevent movement in subsequent steps. Follow instructions under
section “Installing the Cable / Mat” on page 4.
The power lead to heating junction and at least 12 inches (30 cm) of the power lead must be embedded in the mass material. The remainder of
the power lead should be in a conduit that extends to the thermostat or contactor. The power lead may be extended if required.
Measure the resistance once again, and record in the TC Cable / TCM Mat Testing Log under the section “Test Record # 2 During Installa-
tion”.
IMPORTANT TIP: It is recommended to take a picture of the cable/mat layout and conduit placement during installation. This can help in
the unlikely case that the cables/mats need repairs or for warranty claims.
STEP 5: POUR THE CONCRETE SLAB
Pour the concrete slab. Ensure that the contractors are careful not to damage the cable with tools, heavy machinery, etc. Once the slab is poured
but concrete is still wet, measure the resistance once again, and record in the TC Cable / TCM Mat Testing Log under the section “Test Rec-
ord # 3 After Installation”.
It is not recommended to power the cables/mats for until the concrete has cured (approximately 30 days). Check with the concrete manufacturer
for exact curing times. Doing so can affect both the integrity of the slab, and the subsequent proper operation of the TC/TCM cables/mats.
STEP 6: CONNECT POWER SUPPLY AND THERMOSTAT
The connection of the thermostat must be done by a qualified electrician familiar with heating cables and in accordance with the National Elec-
trical Code (NEC) and the Canadian Electrical Code (CEC). Remember to properly ground the heating cable braid.
If this is not already done, the sensor should be installed in the conduit. Remember that the sensor should reach the sealed end of the conduit.
Connect the thermostat and sensor according to the wiring diagram in appendix A.
A final resistance reading of the cables should done and recorded in the TC Cable / TCM Mat Testing Log under the section “Test Record # 4
Final Commissioning”.
STEP 7: RECORD INFORMATION AND AFFIX LABELS
• Ensure that all resistances measured in steps 3 to 6 are recorded on the warranty card.
• The eight digit product code found on the TC cable/mat power lead must be recorded on the warranty certificate.
• Install the electrical panel label at the electrical panel, indicating the location of the cable.
• Install the Warning label in a visible area of the floor, for the duration of the construction.
It is also recommended that the label be kept in a suitable location on a permanent basis.
STEP 8: BEGIN USE OF TC/TCM
The TC/TCM thermal storage heating system is now ready to use. Increase the temperature gradually and adjust it until it reaches a level that
suits your personal preferences.
Note that it may take several hours for the thermal mass to heat up the first time the system is powered, or after extended periods of inactivity.
KING ELECTRIC MFG CO · 9131 10TH AVENUE SOUTH · SEATTLE, WA 98108 · PH:206 762 0400 · FAX: 206 763 7738 · www.king-electric.com
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INSTALLATION - CONCRETE APPLICATION