-5-
TD-7Z, TD-41Z, TD-7ZDW, TD-41ZDW
COMPONENTS CHECKLIST
The following is a checklist of components required for proper installation of these
BOILER MATE™ models, both Priority and Non-Priority:
A. Separate circulator
• 1 each - circulator (4-8 gpm)
• 1 each - positive shut-off weighted check valve
B. Use of heating system zone circulator
• 1 each - zone valve
C. Also Required:
• 4 each - unions
• 4 each - shut off valve
• 1 each - vacuum breaker
• 1 each - T & P relief valve
(included)
• 1 each - A THERM-X-TROL
®
expansion tank -
REQUIRED IF
a Back flow preventer, check
valve or pressure reducing valve is installed anywhere between the BOILER MATE™ and
the city main.
• As needed - pipe dope or Teflon tape
• Do not forget an EXTROL
®
and thermal expansion - an expansion tank is required on the boiler
side of your system.
If a steel hydropneumatic tank is in place, AMTROL recommends
replacing it with a properly sized EXTROL
®
expansion tank. Otherwise,
significant heat transfer problems can occur by causing air to be trapped in the heat
exchanger. If the boiler system has an EXTROL
®
expansion tank and the boiler
temperatures are being changed, resize the EXTROL
®
expansion tank.
3. REQUIRED COMPONENTS AND
ACCESSORIES CHECKLIST
